# lore-glass: full documentation

> Apple Liquid Glass components for React, installed as source with the shadcn CLI. This single file contains every component's docs and full source.

## What it is

lore-glass is a family of Apple "Liquid Glass" components for React, installed
as source into your own project with the shadcn CLI. It is built on a
cross-browser lens engine: an SVG `feDisplacementMap` filter refracts live DOM
(text stays selectable, links stay clickable), and the components layer the iOS
interactions on top (gel presses, velocity deformation, rubber-band overdrag,
spring travel).

Requirements: Tailwind CSS v4 and React 19, in a project initialized with the
shadcn CLI (so the `@/components` and `@/lib` aliases resolve). No runtime
dependency is added; components that use a headless primitive pull in
`@base-ui/react`.

## Install

Every install command writes source files you own under `@/components/ui`.

```bash
# By URL
npx shadcn@latest add https://loreglasses.com/r/glass-popover.json

# Or register the namespace once in components.json, then add by name:
#   "registries": { "@lore-glass": "https://loreglasses.com/r/{name}.json" }
npx shadcn@latest add @lore-glass/glass-popover
```

Components depend on the `glass` package through registry dependencies, so it
installs automatically. Swap the trailing name for any component below.

## The Glass engine and the lens contract

`Glass` filters its own children. Inside the `lens` prop, every element marked
`data-glass-lens` becomes a refracting region that tracks position, size, and
border radius each frame.

```tsx
import { Glass } from "@/components/ui/glass";

<Glass
  className="absolute inset-0"
  tint={0.3}
  lens={
    <div
      data-glass-lens
      className="absolute top-10 left-10 h-24 w-32 rounded-3xl"
    />
  }
>
  <BackgroundContent />
</Glass>;
```

Key props: `scaleX`/`scaleY` (refraction strength), `depth` (edge falloff band),
`domeDepth` (curvature), `splay`, `chroma`, `blur`, `glow`, `edgeHighlight`,
`specularAngle`, `specularStrength`. The engine bends only its own children, not
arbitrary page content behind it.

## Tint

Every text-bearing component (button, popover, dialog, tooltip, input, tabs)
takes `tint`, a number from 0 (ultra clear) to 1 (fully tinted), modeled on the
iOS 27 Liquid Glass appearance slider. Rising tint fades in a frosted backdrop,
grows the blur, and softens the refraction; even fully tinted glass stays
slightly translucent, and text on the glass never tints. `tintColor` overrides
the tint color as an `r,g,b` triple (defaults to white in light mode, dark gray
in dark mode). On the core engine, individual lenses override it with
`data-glass-tint`. The switch and slider take no tint: their thumbs rest as solid
platters and only clear into a lens while pressed.

## Overlay panels

Popover, dialog, tooltip, and input float over arbitrary app content, which the
engine cannot refract (it bends its own children only). They render on
`GlassSurface`: a frosted, tinted panel built from plain `backdrop-filter` blur
and saturation, the same material iOS uses for menus and alerts. It renders
identically in every browser. Wrapping your whole page in `Glass` does not
survive portals, so use `GlassSurface` for floating UI.

## Browser support

The lens engine refracts live DOM in every modern browser. WebKit (Safari)
cannot run an SVG `feDisplacementMap` over a live `<video>` or `<canvas>`, so when
`Glass` wraps a single raster element (video, canvas, or image) it automatically
switches to a WebGL renderer on Safari that reproduces the same lens. Detection
is automatic with no API change, and it falls back to the plain element if WebGL
is unavailable. The WebGL path covers refraction, chromatic aberration,
specular and edge highlights, dome, splay, and per-lens overrides; the `blur`
prop is not applied on it. Force a path during development with
`?glassRenderer=webgl` or `?glassRenderer=svg`.

## Gotchas

- With `chroma` on, the refraction layer must be opaque or anti-aliased edges
  grow dark halos.
- Tailwind v4 compiles `translate-x-*` and `scale-*` to the `translate` and
  `scale` properties; transition those, not `transform`, when animating a lens.

---

# Components

---

# Glass

> The core lens engine. It refracts its own children through an SVG feDisplacementMap, so text stays selectable and links stay clickable under the lens. Every element marked data-glass-lens becomes a movable refracting region. Works in Chromium, Safari, and Firefox.

## Install

```bash
npx shadcn@latest add https://loreglasses.com/r/glass.json
# or, with the @lore-glass namespace registered:
npx shadcn@latest add @lore-glass/glass
```

## Props

### Glass

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `lens` | `ReactNode` | `required` | Layer rendered above the content. Every element inside it marked with data-glass-lens becomes a refracting lens whose position, size, and border radius are tracked each frame. |
| `scaleX / scaleY` | `number` | `0.1` | Refraction strength per axis, as a fraction of the container width. |
| `tint` | `number` | `0` | Liquid Glass tint from 0 (ultra clear) to 1 (fully tinted). Raises a frosted backdrop inside the lens and softens the refraction, like the iOS 27 appearance slider. |
| `tintBlur` | `number` | `12` | Backdrop blur in px reached at full tint. |
| `tintColor` | `string` | `theme` | Tint color as an r,g,b triple, for example 255,255,255. Defaults to white in light mode and a dark gray in dark mode. |
| `chroma` | `number` | `0.2` | Chromatic aberration fringe along the lens edges. |
| `depth` | `number` | `6` | Width of the edge falloff band in px, the zone where the bend ramps up. |
| `domeDepth` | `number` | `0` | Curvature of the lens dome. 0 keeps the center flat. |
| `splay` | `number` | `1` | Direction of the edge bend, from inward 0 to outward 1. |
| `blur` | `number` | `0` | Blur in px applied only inside the lens. |
| `glow` | `number` | `0.12` | Strength of the baked specular glow. |
| `edgeHighlight` | `number` | `0.3` | Strength of the bright rim along the lens edge. |
| `specularAngle` | `number` | `45` | Angle of the specular highlight in degrees. |
| `specularStrength` | `number` | `1` | Multiplier for the specular highlight pass. |
| `mapSize` | `number` | `256` | Pixel resolution of the generated displacement map. |
| `maxDisplacement` | `number` | `Infinity` | Upper bound for the displacement in px. |
| `resolution` | `number` | `1` | Supersampling factor for the filtered content. |
| `reveal` | `boolean` | `false` | Render only the lens regions instead of compositing them over the visible content. |
| `dynamicsRef` | `RefObject<GlassDynamics>` | `undefined` | Imperative per-frame overrides for zoom, depth multiplier, and map dimensions, used for gel deformation. |

### GlassSurface

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `tint` | `number` | `0.5` | Tint of the panel from 0 (clear) to 1 (opaque), same scale as the Glass tint prop. |
| `tintColor` | `string` | `theme` | Tint color as an r,g,b triple. |
| `blur` | `number` | `8` | Backdrop blur of the panel in px. |
| `saturation` | `number` | `1.5` | Backdrop saturation boost, the iOS material color lift. |
| `radius` | `number` | `16` | Corner radius of the panel in px. |
| `specular` | `boolean` | `true` | Render the specular rim highlights. |
| `handleRef` | `RefObject<GlassSurfaceHandle>` | `undefined` | Imperative handle with setTintLift for animating press and focus tint changes without re-rendering. |

## Usage

```tsx
import { type PointerEvent, useRef, useState } from "react";
import { ShowcaseGrid } from "@/components/docs/showcase-grid";
import { Glass } from "@/components/ui/glass";

const LENS_W = 150;
const LENS_H = 110;

function GlassDemo({ tint }: { tint?: number }) {
  const [pos, setPos] = useState({ x: 0.5, y: 0.5 });
  const grab = useRef<{ dx: number; dy: number } | null>(null);

  const toLocal = (e: PointerEvent<HTMLDivElement>) => {
    const rect = e.currentTarget.getBoundingClientRect();
    return {
      x: (e.clientX - rect.left) / rect.width,
      y: (e.clientY - rect.top) / rect.height,
    };
  };

  return (
    <div
      className="absolute inset-0 cursor-grab touch-none select-none overflow-hidden rounded-[20px] active:cursor-grabbing"
      onPointerCancel={() => {
        grab.current = null;
      }}
      onPointerDown={(e) => {
        const p = toLocal(e);
        grab.current = { dx: p.x - pos.x, dy: p.y - pos.y };
        e.currentTarget.setPointerCapture(e.pointerId);
      }}
      onPointerMove={(e) => {
        if (!grab.current) {
          return;
        }
        const p = toLocal(e);
        setPos({
          x: Math.min(1, Math.max(0, p.x - grab.current.dx)),
          y: Math.min(1, Math.max(0, p.y - grab.current.dy)),
        });
      }}
      onPointerUp={() => {
        grab.current = null;
      }}
    >
      <Glass
        chroma={0.3}
        className="absolute inset-0"
        depth={12}
        domeDepth={40}
        edgeHighlight={0.3}
        glow={0.12}
        lens={
          <div
            data-glass-lens
            style={{
              position: "absolute",
              left: `calc(${pos.x * 100}% - ${LENS_W / 2}px)`,
              top: `calc(${pos.y * 100}% - ${LENS_H / 2}px)`,
              width: LENS_W,
              height: LENS_H,
              borderRadius: 32,
              boxShadow:
                "inset 0 1px 1px rgba(255,255,255,0.6), 0 14px 34px -10px rgba(60,40,140,0.45)",
            }}
          />
        }
        scaleX={0.1}
        scaleY={0.1}
        tint={tint}
      >
        <ShowcaseGrid />
        <div className="absolute inset-0 flex flex-col items-center justify-center gap-1 text-[#1f2c49]">
          <span className="font-semibold text-[30px] tracking-tight">
            liquid glass
          </span>
          <span className="text-[13px] opacity-70">
            drag the lens, it refracts this live DOM
          </span>
        </div>
      </Glass>
    </div>
  );
}

export { GlassDemo };
```

## Examples

### Video player

Each control is its own lens refracting the live video underneath. Per lens overrides come from data-glass-* attributes.

```tsx
import { useCallback, useRef, useState } from "react";
import { Glass } from "@/components/ui/glass";
import { Back15, Fwd15, Pause, Play } from "@/components/docs/icons";

const W = 480;
const H = 270;
const PLAY_SIZE = 111 * 0.75;
const SKIP_SIZE = 65 * 0.75;
const GAP = 24;
const BAR_H = 30;
const BAR_MARGIN = 12;
const BAR_PAD = 14;
const SKIP_SECONDS = 15;

const MAIN_DEPTH = Math.round(0.16 * (PLAY_SIZE / 2) * 10) / 10;
const SIDE_DEPTH = Math.round(0.14 * (SKIP_SIZE / 2) * 10) / 10;
const BAR_DEPTH = 0.5 * (BAR_H / 2);
const MAIN_SCALE = 0.07;
const SIDE_MUL = 0.04 / MAIN_SCALE;
const BAR_MUL = 0.04 / MAIN_SCALE;

const pressTransition =
  "width 0.3s cubic-bezier(0.22, 1.15, 0.36, 1.06), height 0.3s cubic-bezier(0.22, 1.15, 0.36, 1.06), transform 0.3s cubic-bezier(0.22, 1.15, 0.36, 1.06)";

function GlassVideoExample() {
  const [ready, setReady] = useState(false);
  const [playing, setPlaying] = useState(false);
  const [hovered, setHovered] = useState(false);
  const [entered, setEntered] = useState(false);
  const videoRef = useRef<HTMLVideoElement | null>(null);
  const barRef = useRef<HTMLDivElement | null>(null);
  const fillRef = useRef<HTMLDivElement | null>(null);
  const scrubbing = useRef(false);
  const wasPlaying = useRef(false);
  const [pressed, setPressed] = useState<"back" | "play" | "fwd" | null>(null);

  const visible = ready && (hovered || !entered);

  const attachVideo = useCallback((el: HTMLVideoElement | null) => {
    videoRef.current = el;
    if (el && el.readyState >= el.HAVE_CURRENT_DATA) {
      setReady(true);
    }
  }, []);

  const attachBar = useCallback((el: HTMLDivElement | null) => {
    barRef.current = el;
    if (!el) {
      return;
    }
    let raf = 0;
    const tick = () => {
      const v = videoRef.current;
      if (v && Number.isFinite(v.duration) && v.duration > 0 && fillRef.current) {
        fillRef.current.style.width = `${(v.currentTime / v.duration) * 100}%`;
      }
      raf = requestAnimationFrame(tick);
    };
    raf = requestAnimationFrame(tick);
    return () => cancelAnimationFrame(raf);
  }, []);

  const toggle = () => {
    const v = videoRef.current;
    if (!v) {
      return;
    }
    if (v.paused) {
      v.play().catch(() => undefined);
    } else {
      v.pause();
    }
  };

  const skip = (delta: number) => {
    const v = videoRef.current;
    if (!v || !Number.isFinite(v.duration)) {
      return;
    }
    v.currentTime = Math.min(Math.max(v.currentTime + delta, 0), v.duration);
  };

  const seek = (clientX: number) => {
    const v = videoRef.current;
    const bar = barRef.current;
    if (!(v && bar) || !Number.isFinite(v.duration) || v.duration <= 0) {
      return;
    }
    const rect = bar.getBoundingClientRect();
    const frac = Math.min(
      Math.max((clientX - rect.left - BAR_PAD) / (rect.width - 2 * BAR_PAD), 0),
      1
    );
    const t = frac * v.duration;
    if (typeof v.fastSeek === "function") {
      v.fastSeek(t);
    } else {
      v.currentTime = t;
    }
  };

  const buttonStyle = (size: number, isPressed: boolean) => ({
    width: size,
    height: size,
    borderRadius: size / 2,
    transform: isPressed ? "scale(0.8)" : "scale(1)",
    transition: pressTransition,
    pointerEvents: "auto" as const,
  });

  const lensMark = (
    size: number,
    order: number,
    overrides: Record<string, number>,
    isPressed: boolean
  ) => (
    <div
      data-glass-lens
      style={{
        width: size * (isPressed ? 0.8 : 1),
        height: size * (isPressed ? 0.8 : 1),
        borderRadius: 999,
        order,
        transition: pressTransition,
      }}
      {...Object.fromEntries(
        Object.entries(overrides).map(([k, v]) => [`data-glass-${k}`, v])
      )}
    />
  );

  return (
    <div
      className="relative isolate max-w-full overflow-hidden rounded-[12px]"
        onMouseEnter={() => {
          setHovered(true);
          setEntered(true);
        }}
        onMouseLeave={() => setHovered(false)}
        style={{ width: W, aspectRatio: `${W} / ${H}` }}
      >
        <Glass
          blur={0.3}
          chroma={0}
          className="absolute inset-0"
          depth={MAIN_DEPTH}
          domeDepth={35}
          edgeHighlight={0.5}
          edgeWidth={2.5}
          glow={0}
          glowSpread={0.5}
          lens={
            visible ? (
              <div
                className="absolute inset-0"
                style={{ pointerEvents: "none" }}
              >
                <div className="absolute inset-0 flex items-center justify-center" style={{ gap: GAP }}>
                  {lensMark(
                    SKIP_SIZE,
                    1,
                    {
                      depth: SIDE_DEPTH,
                      "dome-depth": 40,
                      "edge-highlight": 0.49,
                      "edge-width": 2,
                      mul: SIDE_MUL,
                    },
                    pressed === "back"
                  )}
                  {lensMark(PLAY_SIZE, 2, {}, pressed === "play")}
                  {lensMark(
                    SKIP_SIZE,
                    3,
                    {
                      depth: SIDE_DEPTH,
                      "dome-depth": 40,
                      "edge-highlight": 0.49,
                      "edge-width": 2,
                      mul: SIDE_MUL,
                    },
                    pressed === "fwd"
                  )}
                </div>
                <div
                  data-glass-lens
                  data-glass-depth={BAR_DEPTH}
                  data-glass-dome-depth={0}
                  data-glass-edge-highlight={0.25}
                  data-glass-edge-width={2}
                  data-glass-mul={BAR_MUL}
                  style={{
                    position: "absolute",
                    bottom: BAR_MARGIN,
                    left: BAR_MARGIN,
                    right: BAR_MARGIN,
                    height: BAR_H,
                    borderRadius: BAR_H / 2,
                  }}
                />
              </div>
            ) : null
          }
          scaleX={MAIN_SCALE}
          scaleY={MAIN_SCALE}
          specularAngle={30}
          specularStrength={1}
          splay={1}
        >
          <video
            autoPlay
            className="h-full w-full object-cover"
            loop
            muted
            onCanPlay={() => setReady(true)}
            onPause={() => setPlaying(false)}
            onPlay={() => setPlaying(true)}
            playsInline
            ref={attachVideo}
            src="/aurora.mp4"
          />
        </Glass>
        <div
          className="absolute inset-0 flex items-center justify-center text-white"
          style={{
            gap: GAP,
            opacity: visible ? 1 : 0,
            filter: visible ? "blur(0px)" : "blur(4px)",
            transition: "opacity 0.25s ease-out, filter 0.25s ease-out",
            pointerEvents: visible ? "auto" : "none",
          }}
        >
          <button
            aria-label={`Rewind ${SKIP_SECONDS} seconds`}
            className="flex shrink-0 cursor-pointer items-center justify-center"
            onClick={() => skip(-SKIP_SECONDS)}
            onPointerDown={() => setPressed("back")}
            onPointerLeave={() => setPressed(null)}
            onPointerUp={() => setPressed(null)}
            style={{ ...buttonStyle(SKIP_SIZE, pressed === "back"), order: 1 }}
            type="button"
          >
            <Back15 style={{ width: "70.83%", height: "67.83%" }} />
          </button>
          <button
            aria-label={playing ? "Pause" : "Play"}
            className="flex shrink-0 cursor-pointer items-center justify-center"
            onClick={toggle}
            onPointerDown={() => setPressed("play")}
            onPointerLeave={() => setPressed(null)}
            onPointerUp={() => setPressed(null)}
            style={{ ...buttonStyle(PLAY_SIZE, pressed === "play"), order: 2 }}
            type="button"
          >
            {playing ? (
              <Pause style={{ width: "49.55%", height: "49.55%" }} />
            ) : (
              <Play style={{ width: "49.55%", height: "49.55%" }} />
            )}
          </button>
          <button
            aria-label={`Forward ${SKIP_SECONDS} seconds`}
            className="flex shrink-0 cursor-pointer items-center justify-center"
            onClick={() => skip(SKIP_SECONDS)}
            onPointerDown={() => setPressed("fwd")}
            onPointerLeave={() => setPressed(null)}
            onPointerUp={() => setPressed(null)}
            style={{ ...buttonStyle(SKIP_SIZE, pressed === "fwd"), order: 3 }}
            type="button"
          >
            <Fwd15 style={{ width: "70.83%", height: "67.83%" }} />
          </button>
        </div>
        <div
          aria-label="Seek"
          className="absolute flex cursor-pointer touch-none items-center"
          onPointerDown={(e) => {
            e.preventDefault();
            e.currentTarget.setPointerCapture(e.pointerId);
            scrubbing.current = true;
            const v = videoRef.current;
            wasPlaying.current = !!v && !v.paused;
            v?.pause();
            seek(e.clientX);
          }}
          onPointerMove={(e) => {
            if (scrubbing.current) {
              seek(e.clientX);
            }
          }}
          onPointerUp={() => {
            scrubbing.current = false;
            if (wasPlaying.current) {
              videoRef.current?.play().catch(() => undefined);
            }
          }}
          ref={attachBar}
          role="slider"
          style={{
            bottom: BAR_MARGIN,
            left: BAR_MARGIN,
            right: BAR_MARGIN,
            height: BAR_H,
            paddingLeft: BAR_PAD,
            paddingRight: BAR_PAD,
            opacity: visible ? 1 : 0,
            transition: "opacity 0.25s ease-out",
            pointerEvents: visible ? "auto" : "none",
          }}
        >
          <div className="pointer-events-none relative h-[6px] flex-1 rounded-[3px] bg-white/30">
            <div
              className="pointer-events-none absolute top-0 left-0 h-full rounded-[inherit] bg-white"
              ref={fillRef}
              style={{ width: "0%" }}
            />
          </div>
        </div>
    </div>
  );
}

export { GlassVideoExample };
```

## Source

#### `glass.tsx`

```tsx
"use client";

import {
  GlassWebGLRenderer,
  isRasterChild,
  webglAvailable,
} from "@/components/ui/glass-webgl";
import { cn } from "@/lib/utils";
import {
  type ComponentProps,
  type ReactNode,
  type RefObject,
  useCallback,
  useEffect,
  useId,
  useRef,
  useState,
  useSyncExternalStore,
} from "react";

const SLOTS = 5;
const MAP_CACHE_LIMIT = 64;
const EDGE_BIAS = 0.5;

interface MapParams {
  depth: number;
  domeDepth: number;
  edgeExponent: number;
  edgeStrength: number;
  edgeWidth: number;
  glowExponent: number;
  glowSpread: number;
  glowStrength: number;
  halfH: number;
  halfW: number;
  radius: number;
  size: number;
  splay: number;
  specularAngle: number;
  sdfBoundary?: boolean;
  edgeFalloff?: boolean;
  alphaBlend?: boolean;
}

interface GlassDynamics {
  zoom?: number;
  depthMul?: number;
  mapDims?: { halfW: number; halfH: number; radius: number };
}

function clamp01(v: number): number {
  return v < 0 ? 0 : v > 1 ? 1 : v;
}

function erf(x: number): number {
  return Math.tanh(1.7724538509 * x);
}

function sphereAvgSlope(r: number, halfDim: number): number {
  let sum = 0;
  for (let i = 0; i <= 200; i++) {
    const a = (i / 200) * halfDim;
    const s = a / Math.sqrt(r * r - a * a);
    sum += i === 0 || i === 200 ? 0.5 * s : s;
  }
  return sum / 200;
}

interface DomeConstants {
  rx: number;
  ry: number;
  scaleX: number;
  scaleY: number;
}

function computeDomeConstants(
  domeDepth: number,
  halfW: number,
  halfH: number
): DomeConstants {
  const h = Math.max(0.01, Math.min(domeDepth, Math.min(halfW, halfH) - 1));
  const rx = (halfW * halfW + h * h) / (2 * h);
  const ry = (halfH * halfH + h * h) / (2 * h);
  const ax = sphereAvgSlope(rx, halfW);
  const ay = sphereAvgSlope(ry, halfH);
  return {
    rx,
    ry,
    scaleX: ax > 0 ? 0.5 / ax : 1,
    scaleY: ay > 0 ? 0.5 / ay : 1,
  };
}

function domeGradient(p: number, r: number, scale: number): number {
  const c = Math.min(p, 0.999 * r);
  return (c / Math.sqrt(r * r - c * c)) * scale;
}

function generateLensMap(p: MapParams): string | null {
  if (p.halfW < 2 || p.halfH < 2) {
    return null;
  }
  const sdfBoundary = p.sdfBoundary ?? true;
  const edgeFalloff = p.edgeFalloff ?? true;
  const size = p.size;
  const canvas = document.createElement("canvas");
  canvas.width = size;
  canvas.height = size;
  const ctx = canvas.getContext("2d");
  if (!ctx) {
    return null;
  }
  const image = ctx.createImageData(size, size);
  const data = image.data;
  const half = size >> 1;
  const r0 = Math.min(p.radius, p.halfW, p.halfH);
  const innerHalfW = Math.max(0, p.halfW - p.depth);
  const innerHalfH = Math.max(0, p.halfH - p.depth);
  const innerR = Math.max(0, Math.min(p.radius, Math.min(innerHalfW, innerHalfH)));
  const falloffInv = p.depth > 0 ? 1 / (p.depth * Math.SQRT2) : 1e6;
  const specOn = p.glowStrength > 0 || p.edgeStrength > 0;
  const theta = (p.specularAngle * Math.PI) / 180;
  const cosT = Math.cos(theta);
  const sinT = Math.sin(theta);
  const spreadStart = (1 - p.glowSpread) * Math.SQRT2;
  const spreadRange = p.glowSpread * Math.SQRT2;
  const spreadInv = spreadRange > 0.001 ? 1 / spreadRange : 0;
  const edgeWInv = p.edgeWidth > 0 ? 1 / p.edgeWidth : 0;
  const alphaBlend = p.alphaBlend ?? false;
  const alphaInv = alphaBlend && p.depth > 0 ? 1 / p.depth : 0;
  const stepX = (2 * p.halfW) / size;
  const stepY = (2 * p.halfH) / size;
  const invW = 1 / p.halfW;
  const invH = 1 / p.halfH;
  const dome = p.domeDepth > 0;
  const splaying = p.splay < 1;
  const proxHalf = 0.5 * Math.min(p.halfW, p.halfH);
  const proxInv = proxHalf > 0 ? 1 / proxHalf : 0;
  let colSlope: Float32Array | null = null;
  let domeRy = 0;
  let domeScaleY = 0;
  if (dome) {
    const dc = computeDomeConstants(p.domeDepth, p.halfW, p.halfH);
    domeRy = dc.ry;
    domeScaleY = dc.scaleY;
    colSlope = new Float32Array(half);
    const lim = 0.999 * dc.rx;
    for (let col = 0; col < half; col++) {
      const px = p.halfW - (col + 0.5) * stepX;
      const s = px < lim ? px : lim;
      colSlope[col] = (s / Math.sqrt(dc.rx * dc.rx - s * s)) * dc.scaleX;
    }
  }
  for (let row = 0; row < half; row++) {
    const py = p.halfH - (row + 0.5) * stepY;
    const cornerDy = py - p.halfH + r0;
    const innerDy = py - innerHalfH + innerR;
    const yLin = Math.min(py * invH, 1);
    const domeY = dome ? domeGradient(py, domeRy, domeScaleY) : yLin;
    const proxY = splaying ? Math.max(0, 1 - (p.halfH - py) * proxInv) : 0;
    const mr = size - 1 - row;
    for (let col = 0; col < half; col++) {
      const px = p.halfW - (col + 0.5) * stepX;
      const mc = size - 1 - col;
      const cornerDx = px - p.halfW + r0;
      const ux = Math.max(cornerDx, 0);
      const uy = Math.max(cornerDy, 0);
      const sd =
        Math.hypot(ux, uy) + Math.min(Math.max(cornerDx, cornerDy), 0) - r0;
      const i00 = (row * size + col) * 4;
      const i10 = (row * size + mc) * 4;
      const i01 = (mr * size + col) * 4;
      const i11 = (mr * size + mc) * 4;
      if (sdfBoundary && sd >= 0) {
        const edgeAlpha = alphaBlend ? 0 : 255;
        for (const i of [i00, i10, i01, i11]) {
          data[i] = 128;
          data[i + 1] = 128;
          data[i + 2] = 128;
          data[i + 3] = edgeAlpha;
        }
        continue;
      }
      let dx = colSlope ? colSlope[col] : Math.min(px * invW, 1);
      let dy = domeY;
      if (splaying) {
        const k = 1 - p.splay;
        const ty = proxY * k;
        const tx = Math.max(0, 1 - (p.halfW - px) * proxInv) * k;
        if (tx > 0.001 || ty > 0.001) {
          const ox = dx;
          const oy = dy;
          dx = ox * (1 - ty);
          dy = oy * (1 - tx);
          const before = Math.hypot(ox, oy);
          const after = Math.hypot(dx, dy);
          if (after > 0.001) {
            const f = before / after;
            dx *= f;
            dy *= f;
          }
        }
      }
      let gate = 1;
      if (edgeFalloff) {
        const innerDx = px - innerHalfW + innerR;
        const iux = Math.max(innerDx, 0);
        const iuy = Math.max(innerDy, 0);
        const isd =
          Math.hypot(iux, iuy) +
          Math.min(Math.max(innerDx, innerDy), 0) -
          innerR;
        gate = 0.5 * (1 + erf(isd * falloffInv));
      }
      const hx = 0.5 * dx * gate;
      const hy = 0.5 * dy * gate;
      const rPos = ((0.5 + hx) * 255 + 0.5) | 0;
      const rNeg = ((0.5 - hx) * 255 + 0.5) | 0;
      const gPos = ((0.5 + hy) * 255 + 0.5) | 0;
      const gNeg = ((0.5 - hy) * 255 + 0.5) | 0;
      let b1 = 128;
      let b2 = 128;
      if (specOn) {
        const sa = Math.min(px * invW, 1) * cosT;
        const sb = yLin * sinT;
        const f1 = Math.abs(sa + sb);
        const f2 = Math.abs(sa - sb);
        let s1 = 0;
        let s2 = 0;
        if (p.glowStrength > 0) {
          s1 +=
            p.glowStrength *
            clamp01((f1 - spreadStart) * spreadInv) ** p.glowExponent *
            gate;
          s2 +=
            p.glowStrength *
            clamp01((f2 - spreadStart) * spreadInv) ** p.glowExponent *
            gate;
        }
        if (p.edgeStrength > 0) {
          const rim = sd < 0 ? Math.max(0, 1 + sd * edgeWInv) : 0;
          s1 += p.edgeStrength * rim * f1 ** p.edgeExponent;
          s2 += p.edgeStrength * rim * f2 ** p.edgeExponent;
        }
        if (s1 > 1) {
          s1 = 1;
        }
        if (s2 > 1) {
          s2 = 1;
        }
        b1 = (127 * s1 + 128 + 0.5) | 0;
        b2 = (127 * s2 + 128 + 0.5) | 0;
      }
      const aIn = alphaBlend ? ((clamp01(-sd * alphaInv) * 255 + 0.5) | 0) : 255;
      data[i00] = rPos;
      data[i00 + 1] = gPos;
      data[i00 + 2] = b1;
      data[i00 + 3] = aIn;
      data[i10] = rNeg;
      data[i10 + 1] = gPos;
      data[i10 + 2] = b2;
      data[i10 + 3] = aIn;
      data[i01] = rPos;
      data[i01 + 1] = gNeg;
      data[i01 + 2] = b2;
      data[i01 + 3] = aIn;
      data[i11] = rNeg;
      data[i11 + 1] = gNeg;
      data[i11 + 2] = b1;
      data[i11 + 3] = aIn;
    }
  }
  ctx.putImageData(image, 0, 0);
  return canvas.toDataURL("image/png");
}

const maskCache = new Map<string, string>();

function roundedMaskHref(
  w: number,
  h: number,
  rx: number,
  ry: number
): string {
  const cw = Math.max(1, Math.round(w));
  const ch = Math.max(1, Math.round(h));
  const crx = Math.max(0, Math.min(rx, cw / 2));
  const cry = Math.max(0, Math.min(ry, ch / 2));
  const key = `${cw}|${ch}|${crx}|${cry}`;
  const cached = maskCache.get(key);
  if (cached !== undefined) {
    return cached;
  }
  const canvas = document.createElement("canvas");
  canvas.width = cw;
  canvas.height = ch;
  const ctx = canvas.getContext("2d");
  if (!ctx) {
    return "";
  }
  ctx.fillStyle = "#fff";
  ctx.beginPath();
  ctx.roundRect(0, 0, cw, ch, [{ x: crx, y: cry }]);
  ctx.fill();
  const url = canvas.toDataURL();
  maskCache.set(key, url);
  if (maskCache.size > MAP_CACHE_LIMIT) {
    const first = maskCache.keys().next().value;
    if (first !== undefined) {
      maskCache.delete(first);
    }
  }
  return url;
}

let emptyHref: string | null = null;

function placeholderHref(): string {
  if (emptyHref === null && typeof document !== "undefined") {
    const canvas = document.createElement("canvas");
    canvas.width = 1;
    canvas.height = 1;
    emptyHref = canvas.toDataURL();
  }
  return emptyHref ?? "";
}

const isWebKitOnly =
  typeof navigator !== "undefined" &&
  /AppleWebKit/.test(navigator.userAgent) &&
  !/(Chrome|Chromium|CriOS|FxiOS|EdgiOS|Edg|OPR|Firefox)/.test(
    navigator.userAgent
  );

function isSafariBrowser(): boolean {
  return isWebKitOnly;
}

function readForcedRenderer(): "webgl" | "svg" | null {
  if (typeof window === "undefined") {
    return null;
  }
  try {
    const query = new URLSearchParams(window.location.search).get(
      "glassRenderer"
    );
    if (query === "webgl" || query === "svg") {
      return query;
    }
    const flag = (window as unknown as { __GLASS_RENDERER__?: string })
      .__GLASS_RENDERER__;
    if (flag === "webgl" || flag === "svg") {
      return flag;
    }
    const stored = window.localStorage?.getItem("glassRenderer");
    if (stored === "webgl" || stored === "svg") {
      return stored;
    }
  } catch {
    return null;
  }
  return null;
}

const forcedRenderer = readForcedRenderer();

function useGlassDark(): boolean {
  const [dark, setDark] = useState(
    () =>
      typeof document !== "undefined" &&
      document.documentElement.classList.contains("dark")
  );
  useEffect(() => {
    const root = document.documentElement;
    const observer = new MutationObserver(() => {
      setDark(root.classList.contains("dark"));
    });
    observer.observe(root, { attributes: true, attributeFilter: ["class"] });
    return () => observer.disconnect();
  }, []);
  return dark;
}

const subscribeHydration = () => () => {};

function useHydrated(): boolean {
  return useSyncExternalStore(
    subscribeHydration,
    () => true,
    () => false
  );
}

interface GlassProps extends ComponentProps<"div"> {
  blur?: number;
  chroma?: number;
  depth?: number;
  domeDepth?: number;
  dynamicsRef?: RefObject<GlassDynamics | null>;
  edgeExponent?: number;
  edgeFalloff?: boolean;
  edgeHighlight?: number;
  edgeWidth?: number;
  glow?: number;
  glowExponent?: number;
  glowSpread?: number;
  lens: ReactNode;
  mapSize?: number;
  maxDisplacement?: number;
  resolution?: number;
  reveal?: boolean;
  scaleX?: number;
  scaleY?: number;
  sdfBoundary?: boolean;
  splay?: number;
  specularAngle?: number;
  specularDark?: boolean;
  specularStrength?: number;
  tint?: number;
  tintBlur?: number;
  tintColor?: string;
}

interface SlotEls {
  feImage: SVGFEImageElement | null;
  feScale: SVGFEColorMatrixElement | null;
  feFlood: SVGFEFloodElement | null;
  feMask: SVGFEImageElement | null;
  backdrop: HTMLDivElement | null;
  hrefInit: boolean;
  lastKey: string;
  lastMaskKey: string;
  lastMatrix: string;
  lastX: string;
  lastY: string;
  lastW: string;
  lastH: string;
  lastWidth: number;
  lastHeight: number;
  lastRadius: number;
  lastBackdrop: string;
  prevW: number;
  prevH: number;
}

function makeSlot(): SlotEls {
  return {
    feImage: null,
    feScale: null,
    feFlood: null,
    feMask: null,
    backdrop: null,
    hrefInit: false,
    lastKey: "",
    lastMaskKey: "",
    lastMatrix: "",
    lastX: "",
    lastY: "",
    lastW: "",
    lastH: "",
    lastWidth: 0,
    lastHeight: 0,
    lastRadius: 0,
    lastBackdrop: "",
    prevW: 0,
    prevH: 0,
  };
}

interface EngineParams {
  depth: number;
  domeDepth: number;
  splay: number;
  specularAngle: number;
  specularStrength: number;
  specularDark: boolean;
  glow: number;
  glowSpread: number;
  glowExponent: number;
  edgeHighlight: number;
  edgeWidth: number;
  edgeExponent: number;
  mapSize: number;
  scaleMax: number;
  maxDisplacement: number;
  chroma: number;
  blur: number;
  sdfBoundary: boolean;
  edgeFalloff: boolean;
  kx: number;
  ky: number;
  resolution: number;
  tint: number;
  tintBlur: number;
  tintRGB: string;
}

const OVERRIDE_KEYS = [
  "depth",
  "domeDepth",
  "splay",
  "specularAngle",
  "glow",
  "glowSpread",
  "glowExponent",
  "edgeHighlight",
  "edgeWidth",
  "edgeExponent",
] as const;

type OverrideKey = (typeof OVERRIDE_KEYS)[number];

function markOverrides(
  mark: HTMLElement
): Partial<Record<OverrideKey, number>> & { mul: number } {
  const out: Partial<Record<OverrideKey, number>> & { mul: number } = {
    mul: 1,
  };
  for (const key of OVERRIDE_KEYS) {
    const raw = mark.dataset[`glass${key[0].toUpperCase()}${key.slice(1)}`];
    if (raw !== undefined) {
      const v = Number(raw);
      if (!Number.isNaN(v)) {
        out[key] = v;
      }
    }
  }
  const mulRaw = mark.dataset.glassMul;
  if (mulRaw !== undefined) {
    const v = Number(mulRaw);
    if (!Number.isNaN(v)) {
      out.mul = clamp01(v);
    }
  }
  return out;
}

function axisMatrix(kx: number, ky: number, alpha = 1): string {
  return `${kx} 0 0 0 ${(1 - kx) / 2}  0 ${ky} 0 0 ${(1 - ky) / 2}  0 0 1 0 0  0 0 0 ${alpha} 0`;
}

function Glass({
  scaleX = 0.1,
  scaleY = 0.1,
  chroma = 0.2,
  depth = 6,
  domeDepth = 0,
  splay = 1,
  blur = 0,
  glow = 0.12,
  glowSpread = 1,
  glowExponent = 1.5,
  edgeHighlight = 0.3,
  edgeWidth = 3,
  edgeExponent = 1.5,
  specularStrength = 1,
  specularAngle = 45,
  specularDark = false,
  sdfBoundary = true,
  edgeFalloff = true,
  mapSize = 256,
  maxDisplacement = Number.POSITIVE_INFINITY,
  resolution = 1,
  reveal = false,
  tint = 0,
  tintBlur = 12,
  tintColor,
  dynamicsRef,
  lens,
  className,
  children,
  ...props
}: GlassProps) {
  const dark = useGlassDark();
  const tintRGB = tintColor ?? (dark ? "58,58,62" : "255,255,255");
  const baseId = useId().replace(/[^a-zA-Z0-9-]/g, "");
  const filterId = `${baseId}-glass`;
  const contentRef = useRef<HTMLDivElement | null>(null);
  const rootRef = useRef<HTMLDivElement | null>(null);
  const lensLayerRef = useRef<HTMLDivElement | null>(null);
  const filterRef = useRef<SVGFilterElement | null>(null);
  const feBlurRef = useRef<SVGFEGaussianBlurElement | null>(null);
  const dispRefs = useRef<(SVGFEDisplacementMapElement | null)[]>([
    null,
    null,
    null,
  ]);
  const slotsRef = useRef<SlotEls[]>(Array.from({ length: SLOTS }, makeSlot));
  const mapCache = useRef(new Map<string, string>());
  const decodedUrls = useRef(new Set<string>());
  const pendingUrls = useRef(new Set<string>());
  const version = useRef(0);
  const lastScale = useRef(-1);
  const [slotCount, setSlotCount] = useState(1);
  const slotCountRef = useRef(1);
  slotCountRef.current = slotCount;

  const scaleMax = Math.max(scaleX, scaleY, 1e-4);
  const kx = scaleX / scaleMax;
  const ky = scaleY / scaleMax;

  const hydrated = useHydrated();
  const rasterKind = isRasterChild(children);
  const useWebGL =
    hydrated &&
    (forcedRenderer === "svg"
      ? false
      : rasterKind !== null &&
        webglAvailable() &&
        (forcedRenderer === "webgl" || isSafariBrowser()));

  const params = useRef<EngineParams>({
    depth,
    domeDepth,
    splay,
    specularAngle,
    specularStrength,
    specularDark,
    glow,
    glowSpread,
    glowExponent,
    edgeHighlight,
    edgeWidth,
    edgeExponent,
    mapSize,
    scaleMax,
    maxDisplacement,
    chroma,
    blur,
    sdfBoundary,
    edgeFalloff,
    kx,
    ky,
    resolution,
    tint: clamp01(tint),
    tintBlur,
    tintRGB,
  });
  params.current = {
    depth,
    domeDepth,
    splay,
    specularAngle,
    specularStrength,
    specularDark,
    glow,
    glowSpread,
    glowExponent,
    edgeHighlight,
    edgeWidth,
    edgeExponent,
    mapSize,
    scaleMax,
    maxDisplacement,
    chroma,
    blur,
    sdfBoundary,
    edgeFalloff,
    kx,
    ky,
    resolution,
    tint: clamp01(tint),
    tintBlur,
    tintRGB,
  };

  const attach = useCallback(
    (node: HTMLDivElement | null) => {
      if (!node || typeof window === "undefined") {
        return;
      }
      rootRef.current = node;
      if (useWebGL) {
        return;
      }
      let raf = 0;
      let lastChroma = -1;
      let lastBlurStd = -1;
      const collapse = (slot: SlotEls) => {
        if (slot.lastW === "0.001") {
          return;
        }
        for (const el of [slot.feImage, slot.feFlood, slot.feMask]) {
          el?.setAttribute("x", "0");
          el?.setAttribute("y", "0");
          el?.setAttribute("width", "0.001");
          el?.setAttribute("height", "0.001");
        }
        if (slot.backdrop) {
          slot.backdrop.style.display = "none";
          slot.lastBackdrop = "";
        }
        slot.lastX = "0";
        slot.lastY = "0";
        slot.lastW = "0.001";
        slot.lastH = "0.001";
        slot.lastWidth = 0;
        slot.lastHeight = 0;
      };
      const getMap = (key: string, mp: MapParams): string => {
        const cached = mapCache.current.get(key);
        if (cached !== undefined) {
          return cached;
        }
        const url = generateLensMap(mp) ?? "";
        mapCache.current.set(key, url);
        if (mapCache.current.size > MAP_CACHE_LIMIT) {
          const first = mapCache.current.keys().next().value;
          if (first !== undefined) {
            mapCache.current.delete(first);
          }
        }
        return url;
      };
      const preload = (url: string): boolean => {
        if (!url) {
          return false;
        }
        if (decodedUrls.current.has(url)) {
          return true;
        }
        if (pendingUrls.current.has(url)) {
          return false;
        }
        pendingUrls.current.add(url);
        const img = new Image();
        img.onload = () => {
          pendingUrls.current.delete(url);
          if (decodedUrls.current.size > 256) {
            decodedUrls.current.clear();
          }
          decodedUrls.current.add(url);
        };
        img.onerror = () => {
          pendingUrls.current.delete(url);
        };
        img.src = url;
        return false;
      };
      const tick = () => {
        const layer = lensLayerRef.current;
        for (const slot of slotsRef.current) {
          if (!slot.hrefInit && slot.feImage) {
            if (!slot.feImage.getAttribute("href")) {
              slot.feImage.setAttribute("href", placeholderHref());
            }
            slot.hrefInit = true;
          }
        }
        const p = params.current;
        if (p.chroma !== lastChroma) {
          lastChroma = p.chroma;
          lastScale.current = -1;
        }
        const dyn = dynamicsRef?.current ?? undefined;
        const zoom = dyn?.zoom ?? 1;
        const depthMul = dyn?.depthMul ?? 1;
        const G = p.resolution;
        let mapChanged = false;
        let rectChanged = false;
        let hasLens = false;
        let activeCount = 0;
        let base: DOMRect | null = null;
        if (layer) {
          base = node.getBoundingClientRect();
          const marks = layer.querySelectorAll<HTMLElement>("[data-glass-lens]");
          for (let i = 0; i < SLOTS; i++) {
            const slot = slotsRef.current[i];
            const mark = marks[i];
            if (!mark) {
              collapse(slot);
              continue;
            }
            const r = mark.getBoundingClientRect();
            if (r.width < 2 || r.height < 2) {
              collapse(slot);
              continue;
            }
            hasLens = true;
            activeCount += 1;
            const ov = markOverrides(mark);
            const blend = mark.dataset.glassBlend === "1";
            const tintRaw = mark.dataset.glassTint;
            const tintNum = tintRaw === undefined ? Number.NaN : Number(tintRaw);
            const lensTint = Number.isNaN(tintNum) ? p.tint : clamp01(tintNum);
            const tintEff = 0.5 * lensTint;
            const md = i === 0 ? dyn?.mapDims : undefined;
            const rectW = Math.round(r.width * 2) / 2;
            const rectH = Math.round(r.height * 2) / 2;
            const genW = md ? Math.round(md.halfW * 4) / 2 : rectW;
            const genH = md ? Math.round(md.halfH * 4) / 2 : rectH;
            const resizing =
              Math.abs(r.width - slot.prevW) > 0.3 ||
              Math.abs(r.height - slot.prevH) > 0.3;
            slot.prevW = r.width;
            slot.prevH = r.height;
            const radiusParts = getComputedStyle(mark)
              .borderTopLeftRadius.split(" ")
              .map((v) => Math.round(Number.parseFloat(v) * 2) / 2 || 0);
            const cssRadius = radiusParts[0] ?? 0;
            const cssRadiusY = radiusParts[1] ?? cssRadius;
            const radius = md ? Math.round(md.radius * 2) / 2 : cssRadius;
            const sizeChanged =
              Math.abs(genW - slot.lastWidth) >= 0.5 ||
              Math.abs(genH - slot.lastHeight) >= 0.5 ||
              Math.abs(radius - slot.lastRadius) >= 0.5;
            const unitsPerPx = md ? genW / Math.max(rectW, 1) : 1;
            const baseDepth = ov.depth ?? p.depth;
            const baseDome = ov.domeDepth ?? p.domeDepth;
            const baseEdgeW = ov.edgeWidth ?? p.edgeWidth;
            const effDepth =
              Math.round(baseDepth * depthMul * unitsPerPx * 10) / 10;
            const effDome = Math.round(baseDome * unitsPerPx * 10) / 10;
            const effEdgeW = Math.round(baseEdgeW * unitsPerPx * 10) / 10;
            const splayV = ov.splay ?? p.splay;
            const angleV = ov.specularAngle ?? p.specularAngle;
            const glowV = ov.glow ?? p.glow;
            const glowSpreadV = ov.glowSpread ?? p.glowSpread;
            const glowExpV = ov.glowExponent ?? p.glowExponent;
            const edgeV = ov.edgeHighlight ?? p.edgeHighlight;
            const edgeExpV = ov.edgeExponent ?? p.edgeExponent;
            const key = `${genW}x${genH}r${radius}d${effDepth}o${effDome}p${splayV}a${angleV}g${glowV},${glowSpreadV},${glowExpV}e${edgeV},${effEdgeW},${edgeExpV}m${p.mapSize}f${p.sdfBoundary ? 1 : 0}${p.edgeFalloff ? 1 : 0}${blend ? 1 : 0}`;
            if (!slot.lastKey || (!resizing && (sizeChanged || key !== slot.lastKey))) {
              const url = getMap(key, {
                halfW: genW / 2,
                halfH: genH / 2,
                radius,
                depth: effDepth,
                domeDepth: effDome,
                splay: splayV,
                specularAngle: angleV,
                glowStrength: glowV,
                glowSpread: glowSpreadV,
                glowExponent: glowExpV,
                edgeStrength: edgeV,
                edgeWidth: effEdgeW,
                edgeExponent: edgeExpV,
                size: p.mapSize,
                sdfBoundary: p.sdfBoundary,
                edgeFalloff: p.edgeFalloff,
                alphaBlend: blend,
              });
              if (preload(url)) {
                slot.feImage?.setAttribute("href", url);
                slot.lastKey = key;
                slot.lastWidth = genW;
                slot.lastHeight = genH;
                slot.lastRadius = radius;
                mapChanged = true;
              }
            }
            const tintFade = 1 - 0.85 * tintEff;
            const matrix = axisMatrix(
              p.kx * ov.mul * tintFade,
              p.ky * ov.mul * tintFade,
              ov.mul > 0 ? 1 : 0
            );
            if (slot.feScale && slot.lastMatrix !== matrix) {
              slot.feScale.setAttribute("values", matrix);
              slot.lastMatrix = matrix;
              rectChanged = true;
            }
            const fx = Math.round((r.left - base.left) * 2) / 2;
            const fy = Math.round((r.top - base.top) * 2) / 2;
            const bw = base.width || 1;
            const bh = base.height || 1;
            const sx = String((fx + EDGE_BIAS) / bw);
            const sy = String((fy + EDGE_BIAS) / bh);
            const sw = String(Math.max(0, rectW - 2 * EDGE_BIAS) / bw);
            const sh = String(Math.max(0, rectH - 2 * EDGE_BIAS) / bh);
            if (
              slot.feImage &&
              (slot.lastX !== sx ||
                slot.lastY !== sy ||
                slot.lastW !== sw ||
                slot.lastH !== sh)
            ) {
              for (const el of [slot.feImage, slot.feFlood, slot.feMask]) {
                el?.setAttribute("x", sx);
                el?.setAttribute("y", sy);
                el?.setAttribute("width", sw);
                el?.setAttribute("height", sh);
              }
              slot.lastX = sx;
              slot.lastY = sy;
              slot.lastW = sw;
              slot.lastH = sh;
              rectChanged = true;
            }
            if (slot.feMask) {
              const maskKey = `${rectW}|${rectH}|${cssRadius}|${cssRadiusY}|${G}`;
              if (!slot.lastMaskKey || (!resizing && slot.lastMaskKey !== maskKey)) {
                const maskUrl = roundedMaskHref(
                  (rectW - 2 * EDGE_BIAS) * G,
                  (rectH - 2 * EDGE_BIAS) * G,
                  cssRadius * G,
                  cssRadiusY * G
                );
                if (preload(maskUrl)) {
                  slot.feMask.setAttribute("href", maskUrl);
                  slot.lastMaskKey = maskKey;
                  mapChanged = true;
                }
              }
            }
            const bd = slot.backdrop;
            if (bd) {
              const blurPx = Math.max(p.blur, tintEff * p.tintBlur);
              const filter =
                blurPx > 0.05
                  ? `blur(${blurPx}px) saturate(${1 + 0.5 * tintEff})`
                  : "none";
              const bg =
                tintEff > 0.001
                  ? `rgba(${p.tintRGB},${Math.round(tintEff * 700) / 1000})`
                  : "transparent";
              const bdKey = `${fx},${fy},${rectW},${rectH},${cssRadius},${filter},${bg}`;
              if (slot.lastBackdrop !== bdKey) {
                bd.style.transform = `translate3d(${fx}px, ${fy}px, 0)`;
                bd.style.width = `${rectW}px`;
                bd.style.height = `${rectH}px`;
                bd.style.borderRadius = `${cssRadius}px`;
                bd.style.backdropFilter = filter;
                bd.style.setProperty("-webkit-backdrop-filter", filter);
                bd.style.background = bg;
                bd.style.display = "block";
                slot.lastBackdrop = bdKey;
              }
            }
          }
        }
        const desiredSlots = Math.min(Math.max(activeCount, 1), SLOTS);
        if (desiredSlots !== slotCountRef.current) {
          slotCountRef.current = desiredSlots;
          setSlotCount(desiredSlots);
        }
        if (hasLens && base) {
          const blurStd = p.blur / (base.width || 1);
          if (blurStd !== lastBlurStd) {
            lastBlurStd = blurStd;
            feBlurRef.current?.setAttribute("stdDeviation", String(blurStd));
          }
          const dispScale = Math.min(
            p.scaleMax * zoom,
            p.maxDisplacement / (base.width || 1)
          );
          if (Math.abs(dispScale - lastScale.current) > 0.0001) {
            lastScale.current = dispScale;
            const c = p.chroma;
            const scales =
              c > 0
                ? [dispScale * (1 + 0.2 * c), dispScale * (1 + 0.1 * c), dispScale]
                : [dispScale];
            dispRefs.current.forEach((el, i) => {
              if (el && scales[i] !== undefined) {
                el.setAttribute("scale", String(scales[i]));
              }
            });
            rectChanged = true;
          }
        }
        if (
          (mapChanged || (isWebKitOnly && rectChanged)) &&
          filterRef.current &&
          contentRef.current
        ) {
          version.current += 1;
          const id = `${filterId}-v${version.current}`;
          filterRef.current.id = id;
          contentRef.current.style.filter = `url(#${id})`;
        }
        raf = requestAnimationFrame(tick);
      };
      raf = requestAnimationFrame(tick);
      return () => cancelAnimationFrame(raf);
    },
    [filterId, dynamicsRef, useWebGL]
  );

  useEffect(() => {
    if (!useWebGL || typeof window === "undefined") {
      return;
    }
    const node = rootRef.current;
    const lensLayer = lensLayerRef.current;
    const sourceEl =
      contentRef.current?.querySelector<
        HTMLVideoElement | HTMLCanvasElement | HTMLImageElement
      >("video,canvas,img") ?? null;
    if (!node || !lensLayer || !sourceEl) {
      return;
    }
    const renderer = new GlassWebGLRenderer();
    return renderer.attach(node, lensLayer, sourceEl, {
      getParams: () => params.current,
      getDynamics: () => dynamicsRef?.current ?? undefined,
      reveal,
    });
  }, [useWebGL, reveal, dynamicsRef]);

  const source = blur > 0 ? "blurred" : "SourceGraphic";
  const slotIndexes = Array.from({ length: SLOTS }, (_, i) => i);
  const renderSlots = Array.from({ length: slotCount }, (_, i) => i);
  const axisValues = axisMatrix(kx, ky);

  return (
    <div className={cn("relative", className)} ref={attach} {...props}>
      <div
        className="relative h-full w-full"
        ref={contentRef}
        style={{
          ...(useWebGL
            ? { visibility: reveal ? "hidden" : "visible" }
            : { filter: `url(#${filterId})`, willChange: "filter" }),
          ...(resolution !== 1
            ? {
                width: `${resolution * 100}%`,
                height: `${resolution * 100}%`,
                transform: `scale(${1 / resolution})`,
                transformOrigin: "0 0",
              }
            : null),
        }}
      >
        {resolution !== 1 ? (
          <div
            style={{
              width: `${100 / resolution}%`,
              height: `${100 / resolution}%`,
              transform: `scale(${resolution})`,
              transformOrigin: "0 0",
            }}
          >
            {children}
          </div>
        ) : (
          children
        )}
      </div>
      <div aria-hidden="true" className="pointer-events-none absolute inset-0">
        {slotIndexes.map((i) => (
          <div
            key={`bd-${i}`}
            ref={(el) => {
              slotsRef.current[i].backdrop = el;
            }}
            style={{
              position: "absolute",
              top: 0,
              left: 0,
              display: "none",
              willChange: "backdrop-filter, transform",
            }}
          />
        ))}
      </div>
      <div
        aria-hidden="true"
        className="pointer-events-none absolute inset-0"
        ref={lensLayerRef}
      >
        {lens}
      </div>
      {!useWebGL && (
        <svg aria-hidden="true" className="absolute h-0 w-0" focusable="false">
          <defs>
          <filter
            colorInterpolationFilters="sRGB"
            filterUnits="objectBoundingBox"
            height="1"
            id={filterId}
            primitiveUnits="objectBoundingBox"
            ref={filterRef}
            width="1"
            x="0"
            y="0"
          >
            <feFlood
              floodColor="rgb(128,128,128)"
              floodOpacity="1"
              result="mapBg"
            />
            {renderSlots.map((i) => (
              <feImage
                key={`img-${i}`}
                preserveAspectRatio="none"
                ref={(el) => {
                  slotsRef.current[i].feImage = el;
                }}
                result={`raw${i}`}
              />
            ))}
            {renderSlots.map((i) => (
              <feColorMatrix
                in={`raw${i}`}
                key={`scale-${i}`}
                ref={(el) => {
                  slotsRef.current[i].feScale = el;
                }}
                result={`scaled${i}`}
                type="matrix"
                values={axisValues}
              />
            ))}
            {renderSlots.map((i) => (
              <feComposite
                in={`scaled${i}`}
                in2={i === 0 ? "mapBg" : `m${i - 1}`}
                key={`mc-${i}`}
                operator="over"
                result={i === slotCount - 1 ? "map" : `m${i}`}
              />
            ))}
            {blur > 0 && (
              <feGaussianBlur
                in="SourceGraphic"
                ref={feBlurRef}
                result="blurred"
                stdDeviation="0"
              />
            )}
            {chroma > 0 ? (
              <>
                <feDisplacementMap
                  in={source}
                  in2="map"
                  ref={(el) => {
                    dispRefs.current[0] = el;
                    if (el && !el.hasAttribute("scale")) {
                      el.setAttribute("scale", "0");
                      lastScale.current = -1;
                    }
                  }}
                  result="dR"
                  xChannelSelector="R"
                  yChannelSelector="G"
                />
                <feColorMatrix
                  in="dR"
                  result="cR"
                  type="matrix"
                  values="1 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 1 0"
                />
                <feDisplacementMap
                  in={source}
                  in2="map"
                  ref={(el) => {
                    dispRefs.current[1] = el;
                    if (el && !el.hasAttribute("scale")) {
                      el.setAttribute("scale", "0");
                      lastScale.current = -1;
                    }
                  }}
                  result="dG"
                  xChannelSelector="R"
                  yChannelSelector="G"
                />
                <feColorMatrix
                  in="dG"
                  result="cG"
                  type="matrix"
                  values="0 0 0 0 0  0 1 0 0 0  0 0 0 0 0  0 0 0 1 0"
                />
                <feDisplacementMap
                  in={source}
                  in2="map"
                  ref={(el) => {
                    dispRefs.current[2] = el;
                    if (el && !el.hasAttribute("scale")) {
                      el.setAttribute("scale", "0");
                      lastScale.current = -1;
                    }
                  }}
                  result="dB"
                  xChannelSelector="R"
                  yChannelSelector="G"
                />
                <feColorMatrix
                  in="dB"
                  result="cB"
                  type="matrix"
                  values="0 0 0 0 0  0 0 0 0 0  0 0 1 0 0  0 0 0 1 0"
                />
                <feComposite
                  in="cR"
                  in2="cG"
                  k1="0"
                  k2="1"
                  k3="1"
                  k4="0"
                  operator="arithmetic"
                  result="cRG"
                />
                <feComposite
                  in="cRG"
                  in2="cB"
                  k1="0"
                  k2="1"
                  k3="1"
                  k4="0"
                  operator="arithmetic"
                  result="lensResult"
                />
              </>
            ) : (
              <feDisplacementMap
                in={source}
                in2="map"
                ref={(el) => {
                  dispRefs.current[0] = el;
                  if (el && !el.hasAttribute("scale")) {
                    el.setAttribute("scale", "0");
                    lastScale.current = -1;
                  }
                }}
                result="lensResult"
                xChannelSelector="R"
                yChannelSelector="G"
              />
            )}
            {(glow > 0 || edgeHighlight > 0) &&
              (specularDark ? (
                <>
                  <feColorMatrix
                    in="map"
                    result="spec"
                    type="matrix"
                    values={`0 0 ${-specularStrength} 0 ${1 + (128 * specularStrength) / 255}  0 0 ${-specularStrength} 0 ${1 + (128 * specularStrength) / 255}  0 0 ${-specularStrength} 0 ${1 + (128 * specularStrength) / 255}  0 0 0 0 1`}
                  />
                  <feComposite
                    in="spec"
                    in2="lensResult"
                    k1="1"
                    k2="0"
                    k3="0"
                    k4="0"
                    operator="arithmetic"
                    result="lensResult"
                  />
                </>
              ) : (
                <>
                  <feColorMatrix
                    in="map"
                    result="spec"
                    type="matrix"
                    values="0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 1 0 -0.5019607843"
                  />
                  <feComposite
                    in="spec"
                    in2="lensResult"
                    k1="0"
                    k2={specularStrength}
                    k3="1"
                    k4="0"
                    operator="arithmetic"
                    result="lensResult"
                  />
                </>
              ))}
            {renderSlots.map((i) => (
              <feImage
                height="0.001"
                key={`mask-${i}`}
                preserveAspectRatio="none"
                ref={(el) => {
                  slotsRef.current[i].feMask = el;
                }}
                result={`mask${i}`}
                width="0.001"
                x="0"
                y="0"
              />
            ))}
            <feMerge result="unionMask">
              {renderSlots.map((i) => (
                <feMergeNode in={`mask${i}`} key={`mn-${i}`} />
              ))}
            </feMerge>
            {reveal ? (
              <feComposite in="lensResult" in2="unionMask" operator="in" />
            ) : (
              <>
                <feComposite
                  in="lensResult"
                  in2="unionMask"
                  operator="in"
                  result="lensClipped"
                />
                <feComposite
                  in="SourceGraphic"
                  in2="unionMask"
                  operator="out"
                  result="holedSG"
                />
                <feComposite
                  in="lensClipped"
                  in2="holedSG"
                  k1="0"
                  k2="1"
                  k3="1"
                  k4="0"
                  operator="arithmetic"
                />
              </>
            )}
          </filter>
        </defs>
        </svg>
      )}
    </div>
  );
}

export { Glass, generateLensMap, isSafariBrowser, useGlassDark, useHydrated };
export type { GlassDynamics, MapParams };
```

#### `glass-motion.ts`

```tsx
type Subscriber = (value: number) => void;

const VELOCITY_RESET_MS = 80;

class MotionValue {
  private current: number;
  private prevTime = 0;
  private velocityValue = 0;
  private subs = new Set<Subscriber>();
  private cancelFn: (() => void) | null = null;

  constructor(initial: number) {
    this.current = initial;
  }

  get(): number {
    return this.current;
  }

  getVelocity(): number {
    if (performance.now() - this.prevTime > VELOCITY_RESET_MS) {
      return 0;
    }
    return this.velocityValue;
  }

  set(next: number, timestamp = performance.now()) {
    const elapsed = timestamp - this.prevTime;
    if (elapsed > VELOCITY_RESET_MS) {
      this.velocityValue = 0;
    } else if (elapsed > 0) {
      const dt = Math.min(Math.max(elapsed, 8), 30);
      this.velocityValue = ((next - this.current) / dt) * 1000;
    }
    this.prevTime = timestamp;
    this.current = next;
    for (const fn of this.subs) {
      fn(next);
    }
  }

  jump(next: number) {
    this.stop();
    this.velocityValue = 0;
    this.prevTime = performance.now();
    this.current = next;
    for (const fn of this.subs) {
      fn(next);
    }
  }

  on(fn: Subscriber): () => void {
    this.subs.add(fn);
    return () => this.subs.delete(fn);
  }

  setCancel(fn: (() => void) | null) {
    this.cancelFn = fn;
  }

  stop() {
    this.cancelFn?.();
    this.cancelFn = null;
  }
}

function cubicBezier(x1: number, y1: number, x2: number, y2: number) {
  const cx = 3 * x1;
  const bx = 3 * (x2 - x1) - cx;
  const ax = 1 - cx - bx;
  const cy = 3 * y1;
  const by = 3 * (y2 - y1) - cy;
  const ay = 1 - cy - by;
  const sampleX = (t: number) => ((ax * t + bx) * t + cx) * t;
  const sampleY = (t: number) => ((ay * t + by) * t + cy) * t;
  const sampleDX = (t: number) => (3 * ax * t + 2 * bx) * t + cx;
  return (x: number) => {
    if (x <= 0) {
      return 0;
    }
    if (x >= 1) {
      return 1;
    }
    let t = x;
    for (let i = 0; i < 8; i++) {
      const err = sampleX(t) - x;
      if (Math.abs(err) < 1e-6) {
        return sampleY(t);
      }
      const d = sampleDX(t);
      if (Math.abs(d) < 1e-6) {
        break;
      }
      t -= err / d;
    }
    let lo = 0;
    let hi = 1;
    t = x;
    while (hi - lo > 1e-6) {
      if (sampleX(t) < x) {
        lo = t;
      } else {
        hi = t;
      }
      t = (lo + hi) / 2;
    }
    return sampleY(t);
  };
}

const glassEase = cubicBezier(0.22, 1.15, 0.36, 1.06);

const PRESS_DURATION = 0.32;
const RELEASE_DURATION = 0.52;
const TRAVEL_DURATION = 0.6;

function tween(
  value: MotionValue,
  to: number,
  duration: number,
  ease: (t: number) => number,
  onComplete?: () => void
): () => void {
  value.stop();
  if (duration <= 0) {
    value.jump(to);
    onComplete?.();
    return () => undefined;
  }
  const from = value.get();
  const start = performance.now();
  let raf = 0;
  const step = (now: number) => {
    const t = Math.min((now - start) / (duration * 1000), 1);
    value.set(from + (to - from) * ease(t), now);
    if (t < 1) {
      raf = requestAnimationFrame(step);
    } else {
      value.setCancel(null);
      onComplete?.();
    }
  };
  raf = requestAnimationFrame(step);
  const cancel = () => cancelAnimationFrame(raf);
  value.setCancel(cancel);
  return cancel;
}

interface SpringOptions {
  stiffness: number;
  damping: number;
  restDelta?: number;
  restSpeed?: number;
  onSettle?: () => void;
}

class SpringDriver {
  private vel = 0;
  private raf = 0;
  private last = 0;
  private running = false;
  private readonly restDelta: number;
  private readonly restSpeed: number;

  constructor(
    private readonly value: MotionValue,
    private readonly options: SpringOptions,
    private readonly getTarget: () => number,
    private readonly canRest: () => boolean = () => true
  ) {
    this.restDelta = options.restDelta ?? 5e-4;
    this.restSpeed = options.restSpeed ?? 0.005;
  }

  start() {
    if (this.running) {
      return;
    }
    this.value.stop();
    this.value.setCancel(() => this.stop());
    this.running = true;
    this.last = performance.now();
    const step = (now: number) => {
      if (!this.running) {
        return;
      }
      const dt = Math.min((now - this.last) / 1000, 0.033);
      this.last = now;
      const target = this.getTarget();
      const x = this.value.get();
      const accel =
        -this.options.stiffness * (x - target) - this.options.damping * this.vel;
      this.vel += accel * dt;
      const next = x + this.vel * dt;
      this.value.set(next, now);
      const settled =
        Math.abs(next - target) < this.restDelta &&
        Math.abs(this.vel) < this.restSpeed;
      if (settled && this.canRest()) {
        this.running = false;
        this.vel = 0;
        this.value.setCancel(null);
        this.value.set(target, now);
        this.options.onSettle?.();
        return;
      }
      this.raf = requestAnimationFrame(step);
    };
    this.raf = requestAnimationFrame(step);
  }

  stop() {
    this.running = false;
    this.vel = 0;
    cancelAnimationFrame(this.raf);
  }
}

function rubberBand(distance: number, overshoot: number, dampening: number): number {
  if (overshoot <= 0 || distance === 0) {
    return 0;
  }
  const range = overshoot * dampening;
  const t = Math.min(1, Math.abs(distance) / range);
  return Math.sign(distance) * overshoot * (1 - (1 - t) ** 3);
}

function prefersReducedMotion(): boolean {
  return (
    typeof window !== "undefined" &&
    window.matchMedia("(prefers-reduced-motion: reduce)").matches
  );
}

export {
  cubicBezier,
  glassEase,
  MotionValue,
  PRESS_DURATION,
  prefersReducedMotion,
  RELEASE_DURATION,
  rubberBand,
  SpringDriver,
  TRAVEL_DURATION,
  tween,
};
```

#### `glass-surface.tsx`

```tsx
"use client";

import {
  generateLensMap,
  isSafariBrowser,
  useGlassDark,
  useHydrated,
} from "@/components/ui/glass";
import { cn } from "@/lib/utils";
import {
  type ComponentProps,
  type RefObject,
  useEffect,
  useId,
  useImperativeHandle,
  useRef,
  useState,
} from "react";

const TINT_MAX_ALPHA = 0.4;
const MIN_VEIL = 0.07;
const MIN_BLUR = 2.5;
const MAP_SIZE = 256;
const MAP_CACHE_LIMIT = 48;
const GLOW = 0.16;
const EDGE = 0.85;
const SPECULAR_STRENGTH = 1.7;

const surfaceMapCache = new Map<string, string>();

function clamp01(v: number): number {
  return v < 0 ? 0 : v > 1 ? 1 : v;
}

function refractionSupported(): boolean {
  if (typeof navigator === "undefined") {
    return false;
  }
  return (
    /(Chrome|Chromium|Edg|OPR)\//.test(navigator.userAgent) &&
    !isSafariBrowser()
  );
}

function surfaceMap(
  w: number,
  h: number,
  radius: number,
  rim: number
): string {
  const key = `${w}|${h}|${radius}|${rim}`;
  const cached = surfaceMapCache.get(key);
  if (cached !== undefined) {
    return cached;
  }
  const url =
    generateLensMap({
      halfW: w / 2,
      halfH: h / 2,
      radius,
      depth: rim,
      domeDepth: 0,
      splay: 1,
      specularAngle: 45,
      glowStrength: GLOW,
      glowSpread: 1,
      glowExponent: 1.5,
      edgeStrength: EDGE,
      edgeWidth: 2,
      edgeExponent: 1.5,
      size: MAP_SIZE,
      sdfBoundary: true,
      edgeFalloff: true,
    }) ?? "";
  surfaceMapCache.set(key, url);
  if (surfaceMapCache.size > MAP_CACHE_LIMIT) {
    const first = surfaceMapCache.keys().next().value;
    if (first !== undefined) {
      surfaceMapCache.delete(first);
    }
  }
  return url;
}

interface GlassSurfaceHandle {
  setTintLift(delta: number): void;
}

interface GlassSurfaceProps extends ComponentProps<"div"> {
  blur?: number;
  chroma?: number;
  handleRef?: RefObject<GlassSurfaceHandle | null>;
  radius?: number;
  saturation?: number;
  specular?: boolean;
  tint?: number;
  tintColor?: string;
}

function GlassSurface({
  blur = 12,
  chroma = 0,
  handleRef,
  radius = 16,
  saturation = 1.5,
  specular = true,
  tint = 0.5,
  tintColor,
  className,
  style,
  children,
  ...props
}: GlassSurfaceProps) {
  const dark = useGlassDark();
  const t = clamp01(tint);
  const tintRGB = tintColor ?? (dark ? "58,58,62" : "255,255,255");
  const tintRef = useRef<HTMLDivElement | null>(null);
  const rootRef = useRef<HTMLDivElement | null>(null);
  const feImageRef = useRef<SVGFEImageElement | null>(null);
  const dispRefs = useRef<(SVGFEDisplacementMapElement | null)[]>([
    null,
    null,
    null,
  ]);
  const baseId = useId().replace(/[^a-zA-Z0-9-]/g, "");
  const filterId = `${baseId}-surface`;
  const [supported] = useState(refractionSupported);
  const refract = useHydrated() && supported;
  const chromaOn = chroma > 0;

  const blurPx = Math.max(t * blur * 0.5, MIN_BLUR);
  const dispFade = 1 - 0.3 * t;

  useImperativeHandle(
    handleRef,
    () => ({
      setTintLift(delta: number) {
        if (tintRef.current) {
          tintRef.current.style.background = `rgba(${tintRGB},${Math.max(clamp01(t + delta) * TINT_MAX_ALPHA, MIN_VEIL)})`;
        }
      },
    }),
    [t, tintRGB]
  );

  useEffect(() => {
    if (!refract) {
      return;
    }
    const node = rootRef.current;
    if (!node) {
      return;
    }
    let lastKey = "";
    const update = () => {
      const w = node.offsetWidth;
      const h = node.offsetHeight;
      if (w < 4 || h < 4) {
        return;
      }
      const half = Math.min(w, h) / 2;
      const r = Math.max(0, Math.min(radius, w / 2, h / 2));
      const rim = Math.max(6, Math.min(0.18 * Math.min(w, h), 24, half - 2));
      const key = `${w}|${h}|${r}|${rim}`;
      if (key !== lastKey) {
        lastKey = key;
        const img = feImageRef.current;
        if (img) {
          img.setAttribute("href", surfaceMap(w, h, r, rim));
          img.setAttribute("width", String(w));
          img.setAttribute("height", String(h));
        }
      }
      const base = Math.min(0.17 * Math.min(w, h), 26) * dispFade;
      const scales = chromaOn
        ? [base * (1 + 0.22 * chroma), base * (1 + 0.11 * chroma), base]
        : [base, base, base];
      dispRefs.current.forEach((el, i) => {
        el?.setAttribute("scale", String(scales[i] ?? base));
      });
    };
    const observer = new ResizeObserver(update);
    observer.observe(node);
    update();
    return () => observer.disconnect();
  }, [refract, radius, chroma, chromaOn, dispFade]);

  const filterParts: string[] = [];
  if (refract) {
    filterParts.push(`url(#${filterId})`);
  }
  if (blurPx > 0.05) {
    filterParts.push(`blur(${blurPx}px)`);
  }
  const sat = 1 + (saturation - 1) * t;
  if (sat > 1.001) {
    filterParts.push(`saturate(${sat})`);
  }
  const backdropFilter = filterParts.length ? filterParts.join(" ") : "none";

  const rim = dark
    ? "inset 0 1px 1px 0 rgba(255,255,255,0.55), inset 0 0 0 1px rgba(255,255,255,0.2), inset 0 -12px 24px -16px rgba(255,255,255,0.4), 0 18px 44px -12px rgba(0,0,0,0.55)"
    : "inset 0 1px 1px 0 rgba(255,255,255,0.95), inset 0 0 0 1px rgba(255,255,255,0.45), inset 0 -12px 24px -16px rgba(255,255,255,0.6), 0 16px 40px -10px rgba(0,0,0,0.22)";
  const sheen = dark
    ? "linear-gradient(135deg, rgba(255,255,255,0.16) 0%, rgba(255,255,255,0) 32%, rgba(255,255,255,0) 68%, rgba(255,255,255,0.07) 100%)"
    : "linear-gradient(135deg, rgba(255,255,255,0.28) 0%, rgba(255,255,255,0) 34%, rgba(255,255,255,0) 66%, rgba(255,255,255,0.14) 100%)";

  return (
    <div
      className={cn("relative", className)}
      ref={rootRef}
      style={{ borderRadius: radius, ...style }}
      {...props}
    >
      <div
        aria-hidden="true"
        className="pointer-events-none absolute inset-0 rounded-[inherit]"
        style={{
          backdropFilter,
          WebkitBackdropFilter: backdropFilter,
        }}
      />
      <div
        aria-hidden="true"
        className="pointer-events-none absolute inset-0 rounded-[inherit]"
        ref={tintRef}
        style={{
          background: `rgba(${tintRGB},${Math.max(t * TINT_MAX_ALPHA, MIN_VEIL)})`,
        }}
      />
      {specular ? (
        <>
          <div
            aria-hidden="true"
            className="pointer-events-none absolute inset-0 rounded-[inherit]"
            style={{ background: sheen }}
          />
          <div
            aria-hidden="true"
            className="pointer-events-none absolute inset-0 rounded-[inherit]"
            style={{ boxShadow: rim }}
          />
        </>
      ) : null}
      {refract ? (
        <svg aria-hidden="true" className="absolute h-0 w-0" focusable="false">
          <defs>
            <filter
              colorInterpolationFilters="sRGB"
              filterUnits="objectBoundingBox"
              height="1"
              id={filterId}
              primitiveUnits="userSpaceOnUse"
              width="1"
              x="0"
              y="0"
            >
              <feImage
                preserveAspectRatio="none"
                ref={feImageRef}
                result="map"
                x="0"
                y="0"
              />
              {chromaOn ? (
                <>
                  <feDisplacementMap
                    in="SourceGraphic"
                    in2="map"
                    ref={(el) => {
                      dispRefs.current[0] = el;
                    }}
                    result="dR"
                    scale="0"
                    xChannelSelector="R"
                    yChannelSelector="G"
                  />
                  <feColorMatrix
                    in="dR"
                    result="cR"
                    type="matrix"
                    values="1 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 1 0"
                  />
                  <feDisplacementMap
                    in="SourceGraphic"
                    in2="map"
                    ref={(el) => {
                      dispRefs.current[1] = el;
                    }}
                    result="dG"
                    scale="0"
                    xChannelSelector="R"
                    yChannelSelector="G"
                  />
                  <feColorMatrix
                    in="dG"
                    result="cG"
                    type="matrix"
                    values="0 0 0 0 0  0 1 0 0 0  0 0 0 0 0  0 0 0 1 0"
                  />
                  <feDisplacementMap
                    in="SourceGraphic"
                    in2="map"
                    ref={(el) => {
                      dispRefs.current[2] = el;
                    }}
                    result="dB"
                    scale="0"
                    xChannelSelector="R"
                    yChannelSelector="G"
                  />
                  <feColorMatrix
                    in="dB"
                    result="cB"
                    type="matrix"
                    values="0 0 0 0 0  0 0 0 0 0  0 0 1 0 0  0 0 0 1 0"
                  />
                  <feComposite
                    in="cR"
                    in2="cG"
                    k1="0"
                    k2="1"
                    k3="1"
                    k4="0"
                    operator="arithmetic"
                    result="cRG"
                  />
                  <feComposite
                    in="cRG"
                    in2="cB"
                    k1="0"
                    k2="1"
                    k3="1"
                    k4="0"
                    operator="arithmetic"
                    result="refr"
                  />
                </>
              ) : (
                <feDisplacementMap
                  in="SourceGraphic"
                  in2="map"
                  ref={(el) => {
                    dispRefs.current[0] = el;
                  }}
                  result="refr"
                  scale="0"
                  xChannelSelector="R"
                  yChannelSelector="G"
                />
              )}
              {specular ? (
                <>
                  <feColorMatrix
                    in="map"
                    result="spec"
                    type="matrix"
                    values="0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 1 0 -0.5019607843"
                  />
                  <feComposite
                    in="spec"
                    in2="refr"
                    k1="0"
                    k2={SPECULAR_STRENGTH}
                    k3="1"
                    k4="0"
                    operator="arithmetic"
                  />
                </>
              ) : null}
            </filter>
          </defs>
        </svg>
      ) : null}
      <div className="relative h-full w-full rounded-[inherit]">{children}</div>
    </div>
  );
}

export { GlassSurface };
export type { GlassSurfaceHandle, GlassSurfaceProps };
```

#### `glass-webgl.ts`

```tsx
"use client";

import { generateLensMap, type MapParams } from "@/components/ui/glass";
import { Children, isValidElement, type ReactNode } from "react";

const SLOTS = 5;
const MAP_CACHE_LIMIT = 64;
const DPR_CAP = 2.5;

type RasterKind = "video" | "canvas" | "image";

interface GlassWebGLParams {
  depth: number;
  domeDepth: number;
  splay: number;
  specularAngle: number;
  glow: number;
  glowSpread: number;
  glowExponent: number;
  edgeHighlight: number;
  edgeWidth: number;
  edgeExponent: number;
  mapSize: number;
  scaleMax: number;
  maxDisplacement: number;
  chroma: number;
  sdfBoundary: boolean;
  edgeFalloff: boolean;
  kx: number;
  ky: number;
  tint: number;
  tintRGB: string;
  specularStrength: number;
  specularDark: boolean;
}

interface GlassWebGLDynamics {
  zoom?: number;
  depthMul?: number;
  mapDims?: { halfW: number; halfH: number; radius: number };
}

interface AttachOptions {
  getParams: () => GlassWebGLParams;
  getDynamics: () => GlassWebGLDynamics | undefined;
  reveal: boolean;
}

const OVERRIDE_KEYS = [
  "depth",
  "domeDepth",
  "splay",
  "specularAngle",
  "glow",
  "glowSpread",
  "glowExponent",
  "edgeHighlight",
  "edgeWidth",
  "edgeExponent",
] as const;

type OverrideKey = (typeof OVERRIDE_KEYS)[number];

function clamp01(v: number): number {
  return v < 0 ? 0 : v > 1 ? 1 : v;
}

function markOverrides(
  mark: HTMLElement
): Partial<Record<OverrideKey, number>> & { mul: number } {
  const out: Partial<Record<OverrideKey, number>> & { mul: number } = {
    mul: 1,
  };
  for (const key of OVERRIDE_KEYS) {
    const raw = mark.dataset[`glass${key[0].toUpperCase()}${key.slice(1)}`];
    if (raw !== undefined) {
      const v = Number(raw);
      if (!Number.isNaN(v)) {
        out[key] = v;
      }
    }
  }
  const mulRaw = mark.dataset.glassMul;
  if (mulRaw !== undefined) {
    const v = Number(mulRaw);
    if (!Number.isNaN(v)) {
      out.mul = clamp01(v);
    }
  }
  return out;
}

function isRasterChild(children: ReactNode): RasterKind | null {
  const items = Children.toArray(children).filter(
    (c) => !(typeof c === "string" && c.trim() === "")
  );
  if (items.length !== 1) {
    return null;
  }
  const only = items[0];
  if (!isValidElement(only) || typeof only.type !== "string") {
    return null;
  }
  if (only.type === "video") {
    return "video";
  }
  if (only.type === "canvas") {
    return "canvas";
  }
  if (only.type === "img") {
    return "image";
  }
  return null;
}

let webglProbe: boolean | null = null;

function webglAvailable(): boolean {
  if (webglProbe !== null) {
    return webglProbe;
  }
  if (typeof document === "undefined") {
    webglProbe = false;
    return false;
  }
  try {
    const canvas = document.createElement("canvas");
    const gl =
      canvas.getContext("webgl") ?? canvas.getContext("experimental-webgl");
    webglProbe = gl instanceof WebGLRenderingContext;
  } catch {
    webglProbe = false;
  }
  return webglProbe;
}

const VERT_SRC = `
attribute vec2 aPos;
uniform vec4 uRect;
uniform vec2 uContainer;
varying vec2 vLocal;
varying vec2 vGlobalUV;
void main() {
  vLocal = aPos;
  vec2 px = uRect.xy + aPos * uRect.zw;
  vGlobalUV = px / uContainer;
  vec2 clip = vec2(px.x / uContainer.x * 2.0 - 1.0, 1.0 - px.y / uContainer.y * 2.0);
  gl_Position = vec4(clip, 0.0, 1.0);
}
`;

const FRAG_SRC = `
precision highp float;
uniform sampler2D uSrc;
uniform sampler2D uMap;
uniform vec2 uContainer;
uniform vec2 uRectWH;
uniform vec2 uRadius;
uniform vec3 uChromaScale;
uniform vec2 uAxis;
uniform float uSpecStrength;
uniform float uSpecularDark;
uniform vec3 uTintColor;
uniform float uTintAmount;
varying vec2 vLocal;
varying vec2 vGlobalUV;

float rrCoverage(vec2 local, vec2 wh, vec2 rad) {
  vec2 p = (local - 0.5) * wh;
  vec2 b = wh * 0.5 - rad;
  vec2 q = abs(p) - b;
  float d = length(max(q, 0.0)) + min(max(q.x, q.y), 0.0) - min(rad.x, rad.y);
  return 1.0 - smoothstep(-1.0, 1.0, d);
}

vec2 mapOffset(float scalePx) {
  vec2 m = texture2D(uMap, vLocal).rg;
  vec2 disp = (m - 0.5) * uAxis * scalePx;
  return disp / uContainer;
}

void main() {
  float cov = rrCoverage(vLocal, uRectWH, uRadius);
  if (cov <= 0.0) {
    discard;
  }
  float r = texture2D(uSrc, vGlobalUV + mapOffset(uChromaScale.r)).r;
  float g = texture2D(uSrc, vGlobalUV + mapOffset(uChromaScale.g)).g;
  float b = texture2D(uSrc, vGlobalUV + mapOffset(uChromaScale.b)).b;
  vec3 col = vec3(r, g, b);
  float spec = max(texture2D(uMap, vLocal).b - 0.50196078, 0.0);
  if (uSpecularDark > 0.5) {
    col *= 1.0 - uSpecStrength * spec;
  } else {
    col += uSpecStrength * spec;
  }
  col = mix(col, uTintColor, uTintAmount);
  gl_FragColor = vec4(clamp(col, 0.0, 1.0), cov);
}
`;

function compileShader(
  gl: WebGLRenderingContext,
  type: number,
  src: string
): WebGLShader | null {
  const shader = gl.createShader(type);
  if (!shader) {
    return null;
  }
  gl.shaderSource(shader, src);
  gl.compileShader(shader);
  if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
    gl.deleteShader(shader);
    return null;
  }
  return shader;
}

function createProgram(gl: WebGLRenderingContext): WebGLProgram | null {
  const vs = compileShader(gl, gl.VERTEX_SHADER, VERT_SRC);
  const fs = compileShader(gl, gl.FRAGMENT_SHADER, FRAG_SRC);
  if (!vs || !fs) {
    return null;
  }
  const program = gl.createProgram();
  if (!program) {
    return null;
  }
  gl.attachShader(program, vs);
  gl.attachShader(program, fs);
  gl.bindAttribLocation(program, 0, "aPos");
  gl.linkProgram(program);
  gl.deleteShader(vs);
  gl.deleteShader(fs);
  if (!gl.getProgramParameter(program, gl.LINK_STATUS)) {
    gl.deleteProgram(program);
    return null;
  }
  return program;
}

type UniformName =
  | "uRect"
  | "uContainer"
  | "uRectWH"
  | "uRadius"
  | "uChromaScale"
  | "uAxis"
  | "uSpecStrength"
  | "uSpecularDark"
  | "uTintColor"
  | "uTintAmount"
  | "uSrc"
  | "uMap";

interface MapEntry {
  texture: WebGLTexture | null;
  ready: boolean;
}

function parseTintRGB(rgb: string): [number, number, number] {
  const parts = rgb.split(",").map((v) => Number(v.trim()) / 255);
  return [parts[0] || 0, parts[1] || 0, parts[2] || 0];
}

class GlassWebGLRenderer {
  private gl: WebGLRenderingContext | null = null;
  private program: WebGLProgram | null = null;
  private quad: WebGLBuffer | null = null;
  private srcTexture: WebGLTexture | null = null;
  private uniforms = new Map<UniformName, WebGLUniformLocation | null>();
  private mapCache = new Map<string, MapEntry>();
  private pending = new Set<string>();
  private raf = 0;
  private rvfc = 0;
  private frameReady = false;
  private srcUploaded = false;
  private srcW = 0;
  private srcH = 0;
  private running = false;
  private disposed = false;

  attach(
    container: HTMLDivElement,
    lensLayer: HTMLDivElement,
    source: HTMLVideoElement | HTMLCanvasElement | HTMLImageElement,
    options: AttachOptions
  ): () => void {
    const canvas = document.createElement("canvas");
    canvas.setAttribute("aria-hidden", "true");
    canvas.style.position = "absolute";
    canvas.style.inset = "0";
    canvas.style.width = "100%";
    canvas.style.height = "100%";
    canvas.style.pointerEvents = "none";
    container.appendChild(canvas);

    const gl =
      canvas.getContext("webgl", {
        alpha: true,
        premultipliedAlpha: false,
        antialias: true,
        depth: false,
        stencil: false,
        preserveDrawingBuffer: false,
        powerPreference: "low-power",
      }) ?? null;

    if (!(gl instanceof WebGLRenderingContext)) {
      canvas.remove();
      return () => undefined;
    }
    this.gl = gl;

    const onLost = (event: Event) => {
      event.preventDefault();
      this.running = false;
      cancelAnimationFrame(this.raf);
      this.srcUploaded = false;
      this.srcTexture = null;
      this.srcW = 0;
      this.srcH = 0;
      for (const entry of this.mapCache.values()) {
        entry.texture = null;
        entry.ready = false;
      }
    };
    const onRestored = () => {
      if (this.disposed) {
        return;
      }
      this.initGL();
      this.mapCache.clear();
      this.pending.clear();
      this.start();
    };
    canvas.addEventListener("webglcontextlost", onLost as EventListener);
    canvas.addEventListener("webglcontextrestored", onRestored);

    this.initGL();

    const isVideo = source instanceof HTMLVideoElement;
    const supportsRVFC =
      isVideo &&
      "requestVideoFrameCallback" in source &&
      typeof source.requestVideoFrameCallback === "function";

    const pumpVideo = () => {
      if (this.disposed || !(source instanceof HTMLVideoElement)) {
        return;
      }
      this.frameReady = true;
      this.rvfc = source.requestVideoFrameCallback(pumpVideo);
    };
    if (supportsRVFC && source instanceof HTMLVideoElement) {
      this.rvfc = source.requestVideoFrameCallback(pumpVideo);
    }

    const tick = () => {
      if (!this.running) {
        return;
      }
      this.render(
        container,
        lensLayer,
        source,
        options,
        isVideo,
        supportsRVFC
      );
      this.raf = requestAnimationFrame(tick);
    };
    this.start = () => {
      if (this.running) {
        return;
      }
      this.running = true;
      this.raf = requestAnimationFrame(tick);
    };
    this.start();

    return () => {
      this.disposed = true;
      this.running = false;
      cancelAnimationFrame(this.raf);
      if (
        supportsRVFC &&
        source instanceof HTMLVideoElement &&
        "cancelVideoFrameCallback" in source
      ) {
        source.cancelVideoFrameCallback(this.rvfc);
      }
      canvas.removeEventListener("webglcontextlost", onLost as EventListener);
      canvas.removeEventListener("webglcontextrestored", onRestored);
      const ctx = this.gl;
      if (ctx) {
        for (const entry of this.mapCache.values()) {
          if (entry.texture) {
            ctx.deleteTexture(entry.texture);
          }
        }
        if (this.srcTexture) {
          ctx.deleteTexture(this.srcTexture);
        }
        if (this.quad) {
          ctx.deleteBuffer(this.quad);
        }
        if (this.program) {
          ctx.deleteProgram(this.program);
        }
        const lose = ctx.getExtension("WEBGL_lose_context");
        if (lose) {
          lose.loseContext();
        }
      }
      this.mapCache.clear();
      this.pending.clear();
      this.gl = null;
      canvas.remove();
    };
  }

  private start: () => void = () => undefined;

  private initGL() {
    const gl = this.gl;
    if (!gl) {
      return;
    }
    const program = createProgram(gl);
    if (!program) {
      return;
    }
    this.program = program;
    const names: UniformName[] = [
      "uRect",
      "uContainer",
      "uRectWH",
      "uRadius",
      "uChromaScale",
      "uAxis",
      "uSpecStrength",
      "uSpecularDark",
      "uTintColor",
      "uTintAmount",
      "uSrc",
      "uMap",
    ];
    this.uniforms.clear();
    for (const name of names) {
      this.uniforms.set(name, gl.getUniformLocation(program, name));
    }
    this.quad = gl.createBuffer();
    gl.bindBuffer(gl.ARRAY_BUFFER, this.quad);
    gl.bufferData(
      gl.ARRAY_BUFFER,
      new Float32Array([0, 0, 1, 0, 0, 1, 1, 1]),
      gl.STATIC_DRAW
    );
    this.srcTexture = gl.createTexture();
    gl.bindTexture(gl.TEXTURE_2D, this.srcTexture);
    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
    gl.enable(gl.BLEND);
    gl.blendFuncSeparate(
      gl.SRC_ALPHA,
      gl.ONE_MINUS_SRC_ALPHA,
      gl.ONE,
      gl.ONE_MINUS_SRC_ALPHA
    );
    gl.clearColor(0, 0, 0, 0);
    this.srcUploaded = false;
  }

  private ensureMap(key: string, mp: MapParams): MapEntry {
    const existing = this.mapCache.get(key);
    if (existing) {
      return existing;
    }
    const entry: MapEntry = { texture: null, ready: false };
    this.mapCache.set(key, entry);
    if (this.mapCache.size > MAP_CACHE_LIMIT) {
      const first = this.mapCache.keys().next().value;
      if (first !== undefined && first !== key) {
        const old = this.mapCache.get(first);
        if (old?.texture && this.gl) {
          this.gl.deleteTexture(old.texture);
        }
        this.mapCache.delete(first);
      }
    }
    if (this.pending.has(key)) {
      return entry;
    }
    this.pending.add(key);
    const url = generateLensMap(mp);
    if (!url) {
      this.pending.delete(key);
      return entry;
    }
    const image = new Image();
    image.onload = () => {
      this.pending.delete(key);
      const gl = this.gl;
      const live = this.mapCache.get(key);
      if (!gl || this.disposed || !live) {
        return;
      }
      const texture = gl.createTexture();
      gl.bindTexture(gl.TEXTURE_2D, texture);
      gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, false);
      gl.pixelStorei(gl.UNPACK_COLORSPACE_CONVERSION_WEBGL, gl.NONE);
      gl.texImage2D(
        gl.TEXTURE_2D,
        0,
        gl.RGBA,
        gl.RGBA,
        gl.UNSIGNED_BYTE,
        image
      );
      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
      live.texture = texture;
      live.ready = true;
    };
    image.onerror = () => {
      this.pending.delete(key);
    };
    image.src = url;
    return entry;
  }

  private uploadSource(
    source: HTMLVideoElement | HTMLCanvasElement | HTMLImageElement,
    isVideo: boolean,
    supportsRVFC: boolean
  ): boolean {
    const gl = this.gl;
    if (!gl || !this.srcTexture) {
      return false;
    }
    let w = 0;
    let h = 0;
    if (source instanceof HTMLVideoElement) {
      if (source.readyState < source.HAVE_CURRENT_DATA) {
        return this.srcUploaded;
      }
      w = source.videoWidth;
      h = source.videoHeight;
    } else if (source instanceof HTMLImageElement) {
      w = source.naturalWidth;
      h = source.naturalHeight;
    } else {
      w = source.width;
      h = source.height;
    }
    if (w === 0 || h === 0) {
      return this.srcUploaded;
    }
    const needsUpload =
      !this.srcUploaded ||
      source instanceof HTMLCanvasElement ||
      (isVideo && (!supportsRVFC || this.frameReady)) ||
      (source instanceof HTMLImageElement &&
        (this.srcW !== w || this.srcH !== h));
    if (!needsUpload) {
      return true;
    }
    gl.bindTexture(gl.TEXTURE_2D, this.srcTexture);
    gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, false);
    gl.pixelStorei(gl.UNPACK_COLORSPACE_CONVERSION_WEBGL, gl.NONE);
    gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, source);
    this.srcUploaded = true;
    this.srcW = w;
    this.srcH = h;
    this.frameReady = false;
    return true;
  }

  private render(
    container: HTMLDivElement,
    lensLayer: HTMLDivElement,
    source: HTMLVideoElement | HTMLCanvasElement | HTMLImageElement,
    options: AttachOptions,
    isVideo: boolean,
    supportsRVFC: boolean
  ) {
    const gl = this.gl;
    const program = this.program;
    if (!gl || !program) {
      return;
    }
    const base = container.getBoundingClientRect();
    if (base.width < 2 || base.height < 2) {
      return;
    }
    const dpr = Math.min(
      typeof window === "undefined" ? 1 : window.devicePixelRatio || 1,
      DPR_CAP
    );
    const cw = Math.max(1, Math.round(base.width * dpr));
    const ch = Math.max(1, Math.round(base.height * dpr));
    if (gl.canvas.width !== cw || gl.canvas.height !== ch) {
      gl.canvas.width = cw;
      gl.canvas.height = ch;
    }
    gl.viewport(0, 0, cw, ch);
    gl.clear(gl.COLOR_BUFFER_BIT);

    if (!this.uploadSource(source, isVideo, supportsRVFC)) {
      return;
    }

    const p = options.getParams();
    const dyn = options.getDynamics();
    const zoom = dyn?.zoom ?? 1;
    const depthMul = dyn?.depthMul ?? 1;
    const dispScale = Math.min(p.scaleMax * base.width * zoom, p.maxDisplacement);
    const tintColor = parseTintRGB(p.tintRGB);

    gl.useProgram(program);
    gl.bindBuffer(gl.ARRAY_BUFFER, this.quad);
    gl.enableVertexAttribArray(0);
    gl.vertexAttribPointer(0, 2, gl.FLOAT, false, 0, 0);
    gl.uniform2f(this.uniforms.get("uContainer") ?? null, base.width, base.height);
    gl.uniform1i(this.uniforms.get("uSrc") ?? null, 0);
    gl.uniform1i(this.uniforms.get("uMap") ?? null, 1);
    gl.uniform1f(
      this.uniforms.get("uSpecStrength") ?? null,
      p.specularStrength
    );
    gl.uniform1f(
      this.uniforms.get("uSpecularDark") ?? null,
      p.specularDark ? 1 : 0
    );
    gl.uniform3f(
      this.uniforms.get("uTintColor") ?? null,
      tintColor[0],
      tintColor[1],
      tintColor[2]
    );
    gl.activeTexture(gl.TEXTURE0);
    gl.bindTexture(gl.TEXTURE_2D, this.srcTexture);

    const marks = lensLayer.querySelectorAll<HTMLElement>("[data-glass-lens]");
    for (let i = 0; i < SLOTS; i++) {
      const mark = marks[i];
      if (!mark) {
        continue;
      }
      const r = mark.getBoundingClientRect();
      if (r.width < 2 || r.height < 2) {
        continue;
      }
      const ov = markOverrides(mark);
      const tintRaw = mark.dataset.glassTint;
      const tintNum = tintRaw === undefined ? Number.NaN : Number(tintRaw);
      const lensTint = Number.isNaN(tintNum) ? p.tint : clamp01(tintNum);
      const tintEff = 0.5 * lensTint;
      const md = i === 0 ? dyn?.mapDims : undefined;
      const rectW = Math.round(r.width * 2) / 2;
      const rectH = Math.round(r.height * 2) / 2;
      const genW = md ? Math.round(md.halfW * 4) / 2 : rectW;
      const genH = md ? Math.round(md.halfH * 4) / 2 : rectH;
      const radiusParts = getComputedStyle(mark)
        .borderTopLeftRadius.split(" ")
        .map((v) => Math.round(Number.parseFloat(v) * 2) / 2 || 0);
      const cssRadius = radiusParts[0] ?? 0;
      const cssRadiusY = radiusParts[1] ?? cssRadius;
      const radius = md ? Math.round(md.radius * 2) / 2 : cssRadius;
      const unitsPerPx = md ? genW / Math.max(rectW, 1) : 1;
      const baseDepth = ov.depth ?? p.depth;
      const baseDome = ov.domeDepth ?? p.domeDepth;
      const baseEdgeW = ov.edgeWidth ?? p.edgeWidth;
      const effDepth = Math.round(baseDepth * depthMul * unitsPerPx * 10) / 10;
      const effDome = Math.round(baseDome * unitsPerPx * 10) / 10;
      const effEdgeW = Math.round(baseEdgeW * unitsPerPx * 10) / 10;
      const splayV = ov.splay ?? p.splay;
      const angleV = ov.specularAngle ?? p.specularAngle;
      const glowV = ov.glow ?? p.glow;
      const glowSpreadV = ov.glowSpread ?? p.glowSpread;
      const glowExpV = ov.glowExponent ?? p.glowExponent;
      const edgeV = ov.edgeHighlight ?? p.edgeHighlight;
      const edgeExpV = ov.edgeExponent ?? p.edgeExponent;
      const key = `${genW}x${genH}r${radius}d${effDepth}o${effDome}p${splayV}a${angleV}g${glowV},${glowSpreadV},${glowExpV}e${edgeV},${effEdgeW},${edgeExpV}m${p.mapSize}f${p.sdfBoundary ? 1 : 0}${p.edgeFalloff ? 1 : 0}`;
      const entry = this.ensureMap(key, {
        halfW: genW / 2,
        halfH: genH / 2,
        radius,
        depth: effDepth,
        domeDepth: effDome,
        splay: splayV,
        specularAngle: angleV,
        glowStrength: glowV,
        glowSpread: glowSpreadV,
        glowExponent: glowExpV,
        edgeStrength: edgeV,
        edgeWidth: effEdgeW,
        edgeExponent: edgeExpV,
        size: p.mapSize,
        sdfBoundary: p.sdfBoundary,
        edgeFalloff: p.edgeFalloff,
      });
      if (!entry.ready || !entry.texture) {
        continue;
      }
      const fx = Math.round((r.left - base.left) * 2) / 2;
      const fy = Math.round((r.top - base.top) * 2) / 2;
      const tintFade = 1 - 0.85 * tintEff;
      const axisX = p.kx * ov.mul * tintFade;
      const axisY = p.ky * ov.mul * tintFade;
      const c = p.chroma;
      const chromaR = c > 0 ? dispScale * (1 + 0.2 * c) : dispScale;
      const chromaG = c > 0 ? dispScale * (1 + 0.1 * c) : dispScale;
      gl.uniform4f(this.uniforms.get("uRect") ?? null, fx, fy, rectW, rectH);
      gl.uniform2f(this.uniforms.get("uRectWH") ?? null, rectW, rectH);
      gl.uniform2f(
        this.uniforms.get("uRadius") ?? null,
        Math.min(cssRadius, rectW / 2),
        Math.min(cssRadiusY, rectH / 2)
      );
      gl.uniform3f(
        this.uniforms.get("uChromaScale") ?? null,
        chromaR,
        chromaG,
        dispScale
      );
      gl.uniform2f(this.uniforms.get("uAxis") ?? null, axisX, axisY);
      gl.uniform1f(
        this.uniforms.get("uTintAmount") ?? null,
        Math.round(tintEff * 700) / 1000
      );
      gl.activeTexture(gl.TEXTURE1);
      gl.bindTexture(gl.TEXTURE_2D, entry.texture);
      gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
    }
  }
}

export { GlassWebGLRenderer, isRasterChild, webglAvailable };
export type { GlassWebGLDynamics, GlassWebGLParams, RasterKind };
```

---

# Glass Button

> The circular iOS icon button and its text capsule sibling. A frosted glass disc blurs whatever sits behind it, and pressing squeezes the button with a gel response: the disc scales down and the tint clears while held.

## Install

```bash
npx shadcn@latest add https://loreglasses.com/r/glass-button.json
# or, with the @lore-glass namespace registered:
npx shadcn@latest add @lore-glass/glass-button
```

## Props

### GlassButton

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `variant` | `"icon" \| "capsule"` | `"icon"` | icon renders a fixed-size disc, capsule a pill that grows with its label. |
| `size` | `number` | `44` | Disc diameter, or capsule height, in px. |
| `tint` | `number` | `0.2` | Glass tint from 0 (clear) to 1 (opaque). |
| `tintColor` | `string` | `theme` | Tint color as an r,g,b triple. |
| `...props` | `ComponentProps<"button">` | — | All native button props are forwarded. |

## Usage

```tsx
import { Bell, Ellipsis } from "@/components/docs/icons";
import { GlassButton } from "@/components/ui/glass-button";

function GlassButtonDemo({ tint }: { tint?: number }) {
  return (
    <div className="flex items-center justify-center gap-5">
      <GlassButton aria-label="More options" tint={tint}>
        <Ellipsis className="size-5" />
      </GlassButton>
      <GlassButton aria-label="Notifications" tint={tint}>
        <Bell className="size-5" />
      </GlassButton>
      <GlassButton tint={tint} variant="capsule">
        Continue
      </GlassButton>
    </div>
  );
}

export { GlassButtonDemo };
```

## Source

#### `glass-button.tsx`

```tsx
"use client";

import {
  GlassSurface,
  type GlassSurfaceHandle,
} from "@/components/ui/glass-surface";
import {
  glassEase,
  MotionValue,
  PRESS_DURATION,
  prefersReducedMotion,
  RELEASE_DURATION,
  tween,
} from "@/components/ui/glass-motion";
import { cn } from "@/lib/utils";
import { type ComponentProps, useCallback, useEffect, useRef } from "react";

const PRESS_SCALE = 0.92;
const PRESS_LIFT = -0.2;

interface GlassButtonProps extends ComponentProps<"button"> {
  size?: number;
  tint?: number;
  tintColor?: string;
  variant?: "icon" | "capsule";
}

function GlassButton({
  size = 44,
  tint = 0.2,
  tintColor,
  variant = "icon",
  className,
  style,
  children,
  type = "button",
  onPointerDown,
  onPointerUp,
  onPointerCancel,
  onPointerLeave,
  onKeyDown,
  onKeyUp,
  ...props
}: GlassButtonProps) {
  const innerRef = useRef<HTMLSpanElement | null>(null);
  const surfaceHandle = useRef<GlassSurfaceHandle | null>(null);
  const scale = useRef(new MotionValue(1));
  const lift = useRef(new MotionValue(0));
  const pressed = useRef(false);
  const frame = useRef(0);

  const apply = useCallback(() => {
    frame.current = 0;
    const inner = innerRef.current;
    if (inner) {
      const s = scale.current.get();
      inner.style.transform = s === 1 ? "" : `scale(${s})`;
    }
    surfaceHandle.current?.setTintLift(lift.current.get());
  }, []);

  const schedule = useCallback(() => {
    if (frame.current === 0) {
      frame.current = requestAnimationFrame(apply);
    }
  }, [apply]);

  useEffect(() => {
    const subs = [scale.current.on(schedule), lift.current.on(schedule)];
    return () => {
      for (const off of subs) {
        off();
      }
      cancelAnimationFrame(frame.current);
    };
  }, [schedule]);

  const press = useCallback(() => {
    if (pressed.current) {
      return;
    }
    pressed.current = true;
    const d = prefersReducedMotion() ? 0 : PRESS_DURATION;
    tween(scale.current, PRESS_SCALE, d, glassEase);
    tween(lift.current, PRESS_LIFT, d, glassEase);
  }, []);

  const release = useCallback(() => {
    if (!pressed.current) {
      return;
    }
    pressed.current = false;
    const d = prefersReducedMotion() ? 0 : RELEASE_DURATION;
    tween(scale.current, 1, d, glassEase);
    tween(lift.current, 0, d, glassEase);
  }, []);

  return (
    <button
      className={cn(
        "relative inline-flex shrink-0 cursor-pointer select-none items-center justify-center text-[#1d1d1f] outline-none focus-visible:outline-2 focus-visible:outline-[#9896ff] focus-visible:outline-offset-2 disabled:cursor-not-allowed disabled:opacity-40 dark:text-[#f5f5f7]",
        className
      )}
      onKeyDown={(e) => {
        if ((e.key === " " || e.key === "Enter") && !e.repeat) {
          press();
        }
        onKeyDown?.(e);
      }}
      onKeyUp={(e) => {
        release();
        onKeyUp?.(e);
      }}
      onPointerCancel={(e) => {
        release();
        onPointerCancel?.(e);
      }}
      onPointerDown={(e) => {
        press();
        onPointerDown?.(e);
      }}
      onPointerLeave={(e) => {
        release();
        onPointerLeave?.(e);
      }}
      onPointerUp={(e) => {
        release();
        onPointerUp?.(e);
      }}
      style={{
        height: size,
        width: variant === "icon" ? size : undefined,
        borderRadius: size / 2,
        ...style,
      }}
      type={type}
      {...props}
    >
      <span
        className={cn(
          "relative inline-flex h-full items-center justify-center rounded-[inherit]",
          variant === "icon" && "w-full"
        )}
        ref={innerRef}
        style={{
          paddingInline: variant === "capsule" ? Math.round(size * 0.45) : 0,
          willChange: "transform",
        }}
      >
        <GlassSurface
          aria-hidden="true"
          blur={8}
          className="absolute inset-0"
          handleRef={surfaceHandle}
          radius={size / 2}
          tint={tint}
          tintColor={tintColor}
        />
        <span className="relative inline-flex items-center justify-center gap-2 font-medium text-[15px] leading-none">
          {children}
        </span>
      </span>
    </button>
  );
}

export { GlassButton };
export type { GlassButtonProps };
```

---

# Glass Dialog

> A modal alert sheet on a glass panel. The page dims behind a blurred scrim and the frosted panel scales into place, like an iOS alert. Built on Base UI Dialog, so focus trapping, escape, and outside-press dismissal are handled.

## Install

```bash
npx shadcn@latest add https://loreglasses.com/r/glass-dialog.json
# or, with the @lore-glass namespace registered:
npx shadcn@latest add @lore-glass/glass-dialog
```

## Props

### GlassDialog

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `open / defaultOpen` | `boolean` | `false` | Controlled and uncontrolled open state. |
| `onOpenChange` | `(open: boolean) => void` | `undefined` | Called when the open state changes. |

### GlassDialogContent

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `tint` | `number` | `0.75` | Glass tint of the panel. Dialogs default high for legibility over arbitrary pages. |
| `tintColor` | `string` | `theme` | Tint color as an r,g,b triple. |

## Usage

```tsx
import { type CSSProperties, useState } from "react";
import { ShowcaseGrid } from "@/components/docs/showcase-grid";
import { Glass } from "@/components/ui/glass";

const STAGE_W = 440;
const STAGE_H = 300;

const DIALOG = { w: 300, h: 190 };
const DIALOG_X = (STAGE_W - DIALOG.w) / 2;
const DIALOG_Y = (STAGE_H - DIALOG.h) / 2;

const BTN_H = 38;
const RESET = { w: 78, x: DIALOG_X + DIALOG.w - 22 - 78, y: DIALOG_Y + DIALOG.h - 22 - BTN_H };
const CANCEL = { w: 86, x: RESET.x - 10 - 86, y: RESET.y };

const TRIGGER = { w: 150, h: 46 };
const TRIGGER_X = (STAGE_W - TRIGGER.w) / 2;
const TRIGGER_Y = (STAGE_H - TRIGGER.h) / 2;

const frameStyle: CSSProperties = {
  position: "absolute",
  left: "50%",
  top: "50%",
  width: STAGE_W,
  height: STAGE_H,
  transform: "translate(-50%, -50%)",
};

const lensShadow =
  "inset 0 1px 1.5px rgba(255,255,255,0.55), 0 16px 38px -14px rgba(0,0,0,0.4)";

function rect(
  x: number,
  y: number,
  w: number,
  h: number,
  radius: number
): CSSProperties {
  return {
    position: "absolute",
    left: x,
    top: y,
    width: w,
    height: h,
    borderRadius: radius,
    boxShadow: lensShadow,
  };
}

function GlassDialogDemo({ tint }: { tint?: number }) {
  const [open, setOpen] = useState(true);

  const lenses = open ? (
    <>
      <div data-glass-lens style={rect(DIALOG_X, DIALOG_Y, DIALOG.w, DIALOG.h, 28)} />
      <div data-glass-lens style={rect(CANCEL.x, CANCEL.y, CANCEL.w, BTN_H, BTN_H / 2)} />
      <div data-glass-lens style={rect(RESET.x, RESET.y, RESET.w, BTN_H, BTN_H / 2)} />
    </>
  ) : (
    <div
      data-glass-lens
      style={rect(TRIGGER_X, TRIGGER_Y, TRIGGER.w, TRIGGER.h, TRIGGER.h / 2)}
    />
  );

  return (
    <div className="absolute inset-0 overflow-hidden rounded-[20px]">
      <Glass
        chroma={0.3}
        className="absolute inset-0"
        depth={11}
        domeDepth={14}
        edgeHighlight={0.3}
        glow={0.12}
        lens={<div style={frameStyle}>{lenses}</div>}
        tint={tint}
      >
        <ShowcaseGrid />
        {open ? (
          <div aria-hidden="true" className="absolute inset-0 bg-black/35" />
        ) : null}
      </Glass>

      <div style={frameStyle}>
        {open ? (
          <>
            <button
              aria-label="Close dialog"
              className="absolute inset-0 cursor-default outline-none"
              onClick={() => setOpen(false)}
              type="button"
            />
            <div
              className="absolute text-[#1d1d1f]"
              style={{ left: DIALOG_X + 24, top: DIALOG_Y + 24, width: DIALOG.w - 48 }}
            >
              <div className="font-semibold text-[17px] leading-snug tracking-tight">
                Reset all settings?
              </div>
              <div className="mt-1.5 text-[14px] leading-relaxed opacity-65">
                This restores every preference to its default value. You cannot
                undo this action.
              </div>
            </div>
            <button
              className="absolute flex cursor-pointer items-center justify-center font-medium text-[#1d1d1f] text-[14px] outline-none"
              onClick={() => setOpen(false)}
              style={{ left: CANCEL.x, top: CANCEL.y, width: CANCEL.w, height: BTN_H }}
              type="button"
            >
              Cancel
            </button>
            <button
              className="absolute flex cursor-pointer items-center justify-center font-medium text-[#e5484d] text-[14px] outline-none"
              onClick={() => setOpen(false)}
              style={{ left: RESET.x, top: RESET.y, width: RESET.w, height: BTN_H }}
              type="button"
            >
              Reset
            </button>
          </>
        ) : (
          <button
            className="absolute flex cursor-pointer items-center justify-center font-medium text-[#1d1d1f] text-[15px] outline-none"
            onClick={() => setOpen(true)}
            style={{
              left: TRIGGER_X,
              top: TRIGGER_Y,
              width: TRIGGER.w,
              height: TRIGGER.h,
            }}
            type="button"
          >
            Show Dialog
          </button>
        )}
      </div>
    </div>
  );
}

export { GlassDialogDemo };
```

## Source

#### `glass-dialog.tsx`

```tsx
"use client";

import { Dialog as DialogPrimitive } from "@base-ui/react/dialog";
import { GlassSurface } from "@/components/ui/glass-surface";
import { cn } from "@/lib/utils";

const GlassDialog = DialogPrimitive.Root;
const GlassDialogTrigger = DialogPrimitive.Trigger;
const GlassDialogClose = DialogPrimitive.Close;

interface GlassDialogContentProps extends DialogPrimitive.Popup.Props {
  tint?: number;
  tintColor?: string;
}

function GlassDialogContent({
  tint = 0.75,
  tintColor,
  className,
  children,
  ...props
}: GlassDialogContentProps) {
  return (
    <DialogPrimitive.Portal>
      <DialogPrimitive.Backdrop className="fixed inset-0 z-50 bg-black/35 backdrop-blur-[8px] transition-opacity duration-300 data-[ending-style]:opacity-0 data-[starting-style]:opacity-0" />
      <DialogPrimitive.Popup
        className={cn(
          "-translate-x-1/2 -translate-y-1/2 fixed top-1/2 left-1/2 z-50 outline-none transition-[scale,opacity] duration-300 ease-[cubic-bezier(0.34,1.3,0.64,1)] data-[ending-style]:scale-95 data-[ending-style]:opacity-0 data-[ending-style]:duration-150 data-[ending-style]:ease-out data-[starting-style]:scale-[0.85]",
          className
        )}
        {...props}
      >
        <GlassSurface blur={24} radius={28} tint={tint} tintColor={tintColor}>
          <div className="w-[min(calc(100vw-2rem),400px)] p-6 text-[#1d1d1f] dark:text-[#f5f5f7]">
            {children}
          </div>
        </GlassSurface>
      </DialogPrimitive.Popup>
    </DialogPrimitive.Portal>
  );
}

function GlassDialogTitle({
  className,
  ...props
}: DialogPrimitive.Title.Props) {
  return (
    <DialogPrimitive.Title
      className={cn(
        "font-semibold text-[17px] leading-snug tracking-tight",
        className
      )}
      {...props}
    />
  );
}

function GlassDialogDescription({
  className,
  ...props
}: DialogPrimitive.Description.Props) {
  return (
    <DialogPrimitive.Description
      className={cn("mt-1.5 text-[14px] leading-relaxed opacity-65", className)}
      {...props}
    />
  );
}

export {
  GlassDialog,
  GlassDialogClose,
  GlassDialogContent,
  GlassDialogDescription,
  GlassDialogTitle,
  GlassDialogTrigger,
};
export type { GlassDialogContentProps };
```

---

# Glass Dock

> A macOS-style liquid-glass application dock: an always-glass bar that refracts the content behind it, with crisp icons on top. The selected item rests as a soft grey pill; tap another item or grab and drag the pill and it lifts into a glass lens that refracts and magnifies each icon and label it travels over, then settles back into a pill (grey to glass to grey). The selection glass blends seamlessly into the bar, no rectangular box.

## Install

```bash
npx shadcn@latest add https://loreglasses.com/r/glass-dock.json
# or, with the @lore-glass namespace registered:
npx shadcn@latest add @lore-glass/glass-dock
```

## Props

### GlassDock

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `items` | `{ id, label, icon, badge? }[]` | `required` | Dock entries. Each has an id, a label, a stroked icon node, and an optional badge. |
| `value / defaultValue` | `string` | `first item` | Controlled and uncontrolled selected item id. |
| `onValueChange` | `(id) => void` | `undefined` | Called when the selected item changes. |
| `glass` | `LiquidGlassConfig` | `DEFAULT_LIQUID_GLASS` | Tunes the material: specular, blur, refraction { amount, thickness }, translucency, shadow. |

## Usage

```tsx
import type { ReactNode } from "react";
import { DEFAULT_LIQUID_GLASS, GlassDock } from "@/components/ui/glass-dock";

const NAVY = "#0a2c40";
const MUTED = "#5d6e7b";

const DOCK_GLASS = {
  ...DEFAULT_LIQUID_GLASS,
  translucency: { enabled: true, value: 55 },
};

function Icon({ children }: { children: ReactNode }) {
  return (
    <svg
      aria-hidden="true"
      fill="none"
      height={28}
      stroke="currentColor"
      strokeLinecap="round"
      strokeLinejoin="round"
      strokeWidth={2}
      viewBox="0 0 24 24"
      width={28}
    >
      {children}
    </svg>
  );
}

const ITEMS = [
  {
    id: "home",
    label: "Home",
    icon: <Icon>{<path d="m3 11 9-8 9 8v10h-6v-6H9v6H3V11Z" />}</Icon>,
  },
  {
    id: "dashboard",
    label: "Dashboard",
    icon: (
      <Icon>
        <rect height="7" rx="1.5" width="7" x="3" y="3" />
        <rect height="7" rx="1.5" width="7" x="14" y="3" />
        <rect height="7" rx="1.5" width="7" x="3" y="14" />
        <rect height="7" rx="1.5" width="7" x="14" y="14" />
      </Icon>
    ),
  },
  {
    id: "analytics",
    label: "Analytics",
    icon: <Icon>{<path d="M4 20V10M10 20V4M16 20v-7M22 20V7" />}</Icon>,
  },
  {
    id: "settings",
    label: "Settings",
    icon: (
      <Icon>
        <path d="M12 15.5a3.5 3.5 0 1 0 0-7 3.5 3.5 0 0 0 0 7Z" />
        <path d="M19.4 15a1.7 1.7 0 0 0 .34 1.88l.06.06a2 2 0 0 1-2.83 2.83l-.06-.06a1.7 1.7 0 0 0-1.88-.34 1.7 1.7 0 0 0-1.03 1.56V21a2 2 0 0 1-4 0v-.09A1.7 1.7 0 0 0 8.97 19.35a1.7 1.7 0 0 0-1.88.34l-.06.06a2 2 0 0 1-2.83-2.83l.06-.06A1.7 1.7 0 0 0 4.6 15a1.7 1.7 0 0 0-1.56-1.03H3a2 2 0 0 1 0-4h.09A1.7 1.7 0 0 0 4.65 8.95a1.7 1.7 0 0 0-.34-1.88l-.06-.06a2 2 0 0 1 2.83-2.83l.06.06A1.7 1.7 0 0 0 9.02 4.6 1.7 1.7 0 0 0 10.05 3V3a2 2 0 0 1 4 0v.09A1.7 1.7 0 0 0 15.08 4.65a1.7 1.7 0 0 0 1.88-.34l.06-.06a2 2 0 0 1 2.83 2.83l-.06.06a1.7 1.7 0 0 0-.34 1.88 1.7 1.7 0 0 0 1.56 1.03H21a2 2 0 0 1 0 4h-.09A1.7 1.7 0 0 0 19.4 15Z" />
      </Icon>
    ),
  },
];

function StatusBar() {
  return (
    <div
      className="flex items-center justify-between px-7 pt-3 pb-1"
      style={{ color: NAVY }}
    >
      <span className="font-semibold text-[15px] tracking-tight">9:41</span>
      <div className="flex items-center gap-1.5">
        <svg fill="currentColor" height={11} viewBox="0 0 18 12" width={17}>
          <rect height="4" rx="1" width="3" x="0" y="8" />
          <rect height="6" rx="1" width="3" x="5" y="6" />
          <rect height="8" rx="1" width="3" x="10" y="4" />
          <rect height="10" rx="1" width="3" x="15" y="2" />
        </svg>
        <svg fill="none" height={12} viewBox="0 0 18 13" width={17}>
          <path
            d="M9 11.5a1.4 1.4 0 1 0 0-2.8 1.4 1.4 0 0 0 0 2.8Z"
            fill="currentColor"
          />
          <path
            d="M3.2 6.4a8 8 0 0 1 11.6 0M5.6 8.6a4.7 4.7 0 0 1 6.8 0"
            stroke="currentColor"
            strokeLinecap="round"
            strokeWidth={1.7}
          />
        </svg>
        <svg fill="none" height={12} viewBox="0 0 26 12" width={25}>
          <rect
            height="11"
            opacity="0.4"
            rx="3"
            stroke="currentColor"
            width="22"
            x="0.5"
            y="0.5"
          />
          <rect fill="currentColor" height="7.5" rx="1.5" width="17" x="2" y="2.2" />
          <rect fill="currentColor" height="4" opacity="0.5" rx="1" width="1.6" x="23.5" y="4" />
        </svg>
      </div>
    </div>
  );
}

function TopActions() {
  return (
    <div className="flex items-center justify-end gap-3 pt-3">
      <div
        className="flex items-center gap-5 rounded-full bg-white px-5 py-2.5"
        style={{ boxShadow: "0 6px 18px -8px rgba(10,44,64,0.35)", color: NAVY }}
      >
        <svg
          fill="none"
          height={22}
          stroke="currentColor"
          strokeLinecap="round"
          strokeLinejoin="round"
          strokeWidth={1.9}
          viewBox="0 0 24 24"
          width={22}
        >
          <path d="M18 8a6 6 0 0 0-12 0c0 7-3 9-3 9h18s-3-2-3-9" />
          <path d="M13.7 21a2 2 0 0 1-3.4 0" />
        </svg>
        <svg
          fill="none"
          height={22}
          stroke="currentColor"
          strokeLinecap="round"
          strokeLinejoin="round"
          strokeWidth={1.9}
          viewBox="0 0 24 24"
          width={22}
        >
          <path d="M12 15.5a3.5 3.5 0 1 0 0-7 3.5 3.5 0 0 0 0 7Z" />
          <path d="M19.4 15a1.7 1.7 0 0 0 .34 1.88l.06.06a2 2 0 1 1-2.83 2.83l-.06-.06a1.7 1.7 0 0 0-1.88-.34 1.7 1.7 0 0 0-1.03 1.56V21a2 2 0 0 1-4 0v-.09A1.7 1.7 0 0 0 8.97 19.35a1.7 1.7 0 0 0-1.88.34l-.06.06a2 2 0 1 1-2.83-2.83l.06-.06A1.7 1.7 0 0 0 4.6 15a1.7 1.7 0 0 0-1.56-1.03H3a2 2 0 0 1 0-4h.09A1.7 1.7 0 0 0 4.65 8.95a1.7 1.7 0 0 0-.34-1.88l-.06-.06a2 2 0 1 1 2.83-2.83l.06.06A1.7 1.7 0 0 0 9.02 4.6 1.7 1.7 0 0 0 10.05 3V3a2 2 0 0 1 4 0v.09A1.7 1.7 0 0 0 15.08 4.65a1.7 1.7 0 0 0 1.88-.34l.06-.06a2 2 0 1 1 2.83 2.83l-.06.06a1.7 1.7 0 0 0-.34 1.88 1.7 1.7 0 0 0 1.56 1.03H21a2 2 0 0 1 0 4h-.09A1.7 1.7 0 0 0 19.4 15Z" />
        </svg>
      </div>
      <button
        className="grid size-[52px] place-items-center rounded-full text-white"
        style={{ background: "#2f6bff", boxShadow: "0 8px 20px -6px rgba(47,107,255,0.6)" }}
        type="button"
      >
        <svg
          fill="none"
          height={26}
          stroke="currentColor"
          strokeLinecap="round"
          strokeWidth={2.4}
          viewBox="0 0 24 24"
          width={26}
        >
          <path d="M12 5v14M5 12h14" />
        </svg>
      </button>
    </div>
  );
}

function WeeklyGoal() {
  return (
    <div
      className="mt-8 flex items-center gap-4 rounded-[20px] px-5 py-5"
      style={{ background: "#eef3f7" }}
    >
      <svg fill="none" height={42} viewBox="0 0 42 42" width={42}>
        <circle cx="21" cy="21" r="16" stroke="#c0d4f2" strokeWidth="5" />
        <circle
          cx="21"
          cy="21"
          r="16"
          stroke="#3b7bff"
          strokeDasharray="100.5"
          strokeDashoffset="67"
          strokeLinecap="round"
          strokeWidth="5"
          transform="rotate(-90 21 21)"
        />
        <path d="M19 15.5 26 21l-7 5.5V15.5Z" fill="#3b7bff" />
      </svg>
      <div className="flex-1 text-[17px]" style={{ color: NAVY }}>
        <span className="font-medium">Your weekly goal: </span>
        <span className="font-bold">1/3 days</span>
      </div>
      <svg
        fill="none"
        height={22}
        stroke={NAVY}
        strokeLinecap="round"
        strokeLinejoin="round"
        strokeWidth={2.2}
        viewBox="0 0 24 24"
        width={22}
      >
        <path d="m9 6 6 6-6 6" />
      </svg>
    </div>
  );
}

function ShortCard({
  background,
  label,
  children,
}: {
  background: string;
  label: string;
  children?: ReactNode;
}) {
  return (
    <div
      className="relative h-[182px] w-[136px] flex-shrink-0 overflow-hidden rounded-[18px]"
      style={{ background }}
    >
      {children}
      <div
        className="absolute inset-x-0 bottom-0 h-2/3"
        style={{
          background:
            "linear-gradient(to top, rgba(0,0,0,0.45) 0%, rgba(0,0,0,0) 100%)",
        }}
      />
      <div className="absolute inset-x-0 bottom-0 p-3 font-bold text-[15px] text-white leading-tight">
        {label}
      </div>
    </div>
  );
}

function SmarterSection() {
  return (
    <div className="mt-10">
      <h2 className="font-bold text-[26px] leading-tight" style={{ color: NAVY }}>
        Smarter in 5 minutes
      </h2>
      <p className="mt-2 text-[15px] leading-snug" style={{ color: MUTED }}>
        Shorts help you learn something new every day. Be quick, today's set
        disappears at midnight.
      </p>
      <div className="-mr-7 mt-5 flex gap-3 overflow-x-auto pr-7 [&::-webkit-scrollbar]:hidden">
        <ShortCard
          background="linear-gradient(160deg, #f2c14a 0%, #e8a93b 100%)"
          label="Be Brave, Be Vulnerable"
        >
          <svg
            className="absolute bottom-12 left-1/2 -translate-x-1/2"
            fill="none"
            height={92}
            viewBox="0 0 70 92"
            width={70}
          >
            <circle cx="38" cy="14" fill="#1f3a8a" r="9" />
            <path d="M27 30h22l4 30H23l4-30Z" fill="#2b59c9" />
            <rect fill="#15235e" height="30" rx="3" width="8" x="29" y="60" />
            <rect fill="#15235e" height="30" rx="3" width="8" x="40" y="60" />
            <rect
              fill="#f4e6c4"
              height="16"
              rx="2"
              transform="rotate(-6 33 46)"
              width="26"
              x="20"
              y="38"
            />
            <path
              d="M20 40h26M20 45h26"
              stroke="#b89a52"
              strokeWidth="1.4"
            />
          </svg>
        </ShortCard>
        <ShortCard
          background="linear-gradient(160deg, #b7b1a8 0%, #6e6862 100%)"
          label="Why You Should Drop Perfecti..."
        >
          <div
            className="absolute top-0 left-1/2 h-12 w-3 -translate-x-1/2"
            style={{ background: "rgba(30,26,22,0.65)" }}
          />
          <div
            className="absolute left-1/2 top-10 h-8 w-px -translate-x-1/2"
            style={{ background: "rgba(245,240,235,0.85)" }}
          />
          <div
            className="absolute left-1/2 top-[68px] h-9 w-11 -translate-x-1/2 rounded-b-[14px] rounded-t-sm"
            style={{ background: "rgba(248,244,238,0.92)" }}
          />
        </ShortCard>
        <ShortCard
          background="linear-gradient(160deg, #8e7bd6 0%, #6f5fc0 100%)"
          label="What Skating Innovation is T..."
        >
          <div className="absolute inset-x-2.5 top-3 space-y-1.5">
            <p className="font-semibold text-[8px] text-white leading-tight">
              Tony Hawk is a legend. What innovation is he best known for?
            </p>
            <div className="rounded bg-white/80 px-1.5 py-1 text-[6px] text-[#3a3160]">
              Attaching wheels to a surfboard
            </div>
            <div className="rounded bg-white/80 px-1.5 py-1 text-[6px] text-[#3a3160]">
              Inventing bowl skating
            </div>
            <div className="rounded bg-white/60 px-1.5 py-1 text-[6px] text-[#3a3160]">
              Landing the first "900"
            </div>
          </div>
        </ShortCard>
      </div>
    </div>
  );
}

function BlinkOfDay() {
  return (
    <div className="mt-10">
      <div className="flex items-start justify-between">
        <h2
          className="font-bold text-[26px] leading-tight"
          style={{ color: NAVY }}
        >
          Your Blink of the day
        </h2>
        <svg
          fill="none"
          height={24}
          stroke="#2f6bff"
          strokeLinecap="round"
          strokeLinejoin="round"
          strokeWidth={1.9}
          viewBox="0 0 24 24"
          width={24}
        >
          <path d="M18 8a6 6 0 0 0-12 0c0 7-3 9-3 9h18s-3-2-3-9" />
          <path d="M13.7 21a2 2 0 0 1-3.4 0" />
        </svg>
      </div>
      <p className="mt-2 text-[15px]" style={{ color: MUTED }}>
        Picked for you, based on what you like
      </p>
      <div
        className="-mx-7 mt-5 grid h-[360px] place-items-center rounded-t-[20px]"
        style={{ background: "linear-gradient(165deg, #5aa743 0%, #3f8a30 100%)" }}
      >
        <div
          className="flex w-[180px] flex-col items-center gap-2 rounded-[12px] px-5 py-7 text-center text-white"
          style={{ background: "linear-gradient(165deg, #4f9b38 0%, #357a28 100%)" }}
        >
          <span className="font-semibold text-[11px] tracking-[0.2em]">
            NAPOLEON HILL
          </span>
          <span className="font-serif font-bold text-[26px] leading-7">
            Think and Grow Rich
          </span>
          <svg className="mt-4" fill="none" height={44} viewBox="0 0 60 44" width={60}>
            <rect fill="#e8b53a" height="7" rx="1" width="9" x="22" y="13" />
            <rect fill="#f0c84e" height="6" rx="1" width="11" x="21" y="20" />
            <rect fill="#e8b53a" height="6" rx="1" width="13" x="20" y="26" />
            <path d="M8 32h44l-6 9H14l-6-9Z" fill="#ffffff" />
            <path d="M30 4v9" stroke="#cfe6c2" strokeWidth="1.6" />
            <circle cx="30" cy="4" fill="#f0c84e" r="2.4" />
          </svg>
        </div>
      </div>
    </div>
  );
}

function PhoneScreen() {
  return (
    <div
      className="pointer-events-auto absolute inset-0 overflow-y-auto bg-white [&::-webkit-scrollbar]:hidden"
      style={{ scrollbarWidth: "none" }}
    >
      <StatusBar />
      <div className="px-7">
        <TopActions />
        <h1
          className="mt-7 font-extrabold text-[40px] leading-none"
          style={{ color: NAVY }}
        >
          Home
        </h1>
        <WeeklyGoal />
        <SmarterSection />
        <BlinkOfDay />
      </div>
    </div>
  );
}

function GlassDockDemo() {
  return (
    <div className="flex w-full justify-center">
      <GlassDock
        accentColor="#0a84ff"
        align="bottom"
        className="h-[760px] w-full max-w-[440px] rounded-[44px] shadow-[0_30px_70px_-25px_rgba(10,30,45,0.6)] ring-1 ring-black/10"
        defaultValue="home"
        glass={DOCK_GLASS}
        hoverColor="#1c1c1e"
        idleColor="#3a3d42"
        items={ITEMS}
        pillColor="rgba(255,255,255,0.92)"
        tintBlur={16}
      >
        <PhoneScreen />
      </GlassDock>
    </div>
  );
}

export { GlassDockDemo };
```

## Examples

### Dark

A dark, Slack-style bottom bar. Pass a dark tintColor plus light idle/hover colors and a blue accent; the bar frosts and refracts the dark screen behind it while the selected item rests as a soft lighter pill.

```tsx
import type { ReactNode } from "react";
import { DEFAULT_LIQUID_GLASS, GlassDock } from "@/components/ui/glass-dock";

const INK = "#e8eaed";
const SUBTLE = "#8a9099";

const DARK_GLASS = {
  ...DEFAULT_LIQUID_GLASS,
  translucency: { enabled: true, value: 62 },
};

function Icon({ children }: { children: ReactNode }) {
  return (
    <svg
      aria-hidden="true"
      fill="none"
      height={28}
      stroke="currentColor"
      strokeLinecap="round"
      strokeLinejoin="round"
      strokeWidth={2}
      viewBox="0 0 24 24"
      width={28}
    >
      {children}
    </svg>
  );
}

const ITEMS = [
  {
    id: "home",
    label: "Home",
    icon: <Icon>{<path d="m3 11 9-8 9 8v10h-6v-6H9v6H3V11Z" />}</Icon>,
  },
  {
    id: "dms",
    label: "DMs",
    icon: (
      <Icon>
        <path d="M14 9a2 2 0 0 1-2 2H6l-4 4V4a2 2 0 0 1 2-2h8a2 2 0 0 1 2 2v5Z" />
        <path d="M18 9h2a2 2 0 0 1 2 2v11l-4-4h-6a2 2 0 0 1-2-2v-1" />
      </Icon>
    ),
  },
  {
    id: "activity",
    label: "Activity",
    icon: (
      <Icon>
        <path d="M18 8a6 6 0 0 0-12 0c0 7-3 9-3 9h18s-3-2-3-9" />
        <path d="M13.7 21a2 2 0 0 1-3.4 0" />
      </Icon>
    ),
  },
  {
    id: "more",
    label: "More",
    icon: (
      <svg
        aria-hidden="true"
        fill="currentColor"
        height={28}
        viewBox="0 0 24 24"
        width={28}
      >
        <circle cx="5" cy="12" r="2" />
        <circle cx="12" cy="12" r="2" />
        <circle cx="19" cy="12" r="2" />
      </svg>
    ),
  },
];

function StatusBar() {
  return (
    <div
      className="flex items-center justify-between px-7 pt-3 pb-1"
      style={{ color: INK }}
    >
      <span className="font-semibold text-[15px] tracking-tight">9:41</span>
      <div className="flex items-center gap-1.5">
        <svg fill="currentColor" height={11} viewBox="0 0 18 12" width={17}>
          <rect height="4" rx="1" width="3" x="0" y="8" />
          <rect height="6" rx="1" width="3" x="5" y="6" />
          <rect height="8" rx="1" width="3" x="10" y="4" />
          <rect height="10" rx="1" width="3" x="15" y="2" />
        </svg>
        <svg fill="none" height={12} viewBox="0 0 18 13" width={17}>
          <path
            d="M9 11.5a1.4 1.4 0 1 0 0-2.8 1.4 1.4 0 0 0 0 2.8Z"
            fill="currentColor"
          />
          <path
            d="M3.2 6.4a8 8 0 0 1 11.6 0M5.6 8.6a4.7 4.7 0 0 1 6.8 0"
            stroke="currentColor"
            strokeLinecap="round"
            strokeWidth={1.7}
          />
        </svg>
        <svg fill="none" height={12} viewBox="0 0 26 12" width={25}>
          <rect
            height="11"
            opacity="0.4"
            rx="3"
            stroke="currentColor"
            width="22"
            x="0.5"
            y="0.5"
          />
          <rect fill="currentColor" height="7.5" rx="1.5" width="17" x="2" y="2.2" />
          <rect
            fill="currentColor"
            height="4"
            opacity="0.5"
            rx="1"
            width="1.6"
            x="23.5"
            y="4"
          />
        </svg>
      </div>
    </div>
  );
}

function Header() {
  return (
    <div className="flex items-center justify-between pt-3">
      <button
        className="grid size-[44px] place-items-center rounded-full"
        style={{ background: "#23262d", color: INK }}
        type="button"
      >
        <svg
          fill="none"
          height={22}
          stroke="currentColor"
          strokeLinecap="round"
          strokeLinejoin="round"
          strokeWidth={1.9}
          viewBox="0 0 24 24"
          width={22}
        >
          <path d="M16 21v-2a4 4 0 0 0-4-4H6a4 4 0 0 0-4 4v2" />
          <circle cx="9" cy="7" r="4" />
          <path d="M19 8v6M22 11h-6" />
        </svg>
      </button>
      <span className="font-semibold text-[15px]" style={{ color: SUBTLE }}>
        Workspace
      </span>
      <div className="size-[44px]" />
    </div>
  );
}

function Teammate({
  color,
  initials,
  name,
  handle,
  added,
}: {
  color: string;
  initials: string;
  name: string;
  handle: string;
  added?: boolean;
}) {
  return (
    <div className="flex items-center gap-3.5 py-3">
      <div
        className="grid size-[46px] flex-shrink-0 place-items-center rounded-[14px] font-bold text-[15px] text-white"
        style={{ background: color }}
      >
        {initials}
      </div>
      <div className="min-w-0 flex-1">
        <div className="truncate font-semibold text-[16px]" style={{ color: INK }}>
          {name}
        </div>
        <div className="truncate text-[13px]" style={{ color: SUBTLE }}>
          {handle}
        </div>
      </div>
      <div
        className="rounded-full px-4 py-1.5 font-semibold text-[13px]"
        style={
          added
            ? { background: "#23262d", color: SUBTLE }
            : { background: "#1264a3", color: "#ffffff" }
        }
      >
        {added ? "Added" : "Add"}
      </div>
    </div>
  );
}

function SlackScreen() {
  return (
    <div
      className="pointer-events-auto absolute inset-0 overflow-y-auto [&::-webkit-scrollbar]:hidden"
      style={{ background: "#15171c", scrollbarWidth: "none" }}
    >
      <StatusBar />
      <div className="px-7">
        <Header />
        <h1
          className="mt-7 font-extrabold text-[34px] leading-tight"
          style={{ color: INK }}
        >
          Add Teammates
        </h1>
        <p className="mt-2 text-[15px] leading-snug" style={{ color: SUBTLE }}>
          Slack is better with the people you work with. Invite a few to get
          started.
        </p>
        <div className="mt-6">
          <Teammate
            color="#9b51e0"
            handle="@maya"
            initials="MR"
            name="Maya Romero"
          />
          <Teammate
            added
            color="#2d9d78"
            handle="@dev"
            initials="DK"
            name="Devon Kim"
          />
          <Teammate
            color="#e0518a"
            handle="@priya"
            initials="PN"
            name="Priya Nair"
          />
          <Teammate
            color="#e08a2d"
            handle="@lucas"
            initials="LH"
            name="Lucas Haddad"
          />
          <Teammate
            color="#3b82c4"
            handle="@sam"
            initials="SO"
            name="Sam Okafor"
          />
          <Teammate
            color="#7b8794"
            handle="@noor"
            initials="NA"
            name="Noor Abadi"
          />
        </div>
        <h2
          className="mt-8 font-bold text-[15px] uppercase tracking-wide"
          style={{ color: SUBTLE }}
        >
          Suggested for you
        </h2>
        <div className="mt-2">
          <Teammate
            color="#d4452e"
            handle="@aiko"
            initials="AT"
            name="Aiko Tanaka"
          />
          <Teammate
            color="#1f9e8f"
            handle="@mateo"
            initials="MC"
            name="Mateo Cruz"
          />
          <Teammate
            added
            color="#c0843a"
            handle="@hannah"
            initials="HB"
            name="Hannah Berg"
          />
          <Teammate
            color="#5e6ad2"
            handle="@omar"
            initials="OF"
            name="Omar Farouk"
          />
          <Teammate
            color="#b5479a"
            handle="@zoe"
            initials="ZM"
            name="Zoe Mitchell"
          />
          <Teammate
            color="#2f8f4e"
            handle="@ravi"
            initials="RS"
            name="Ravi Shah"
          />
          <Teammate
            color="#3b82c4"
            handle="@elena"
            initials="EV"
            name="Elena Volkov"
          />
          <Teammate
            color="#9b51e0"
            handle="@kofi"
            initials="KA"
            name="Kofi Asante"
          />
        </div>
        <div className="h-[140px]" />
      </div>
    </div>
  );
}

function GlassDockDarkDemo() {
  return (
    <div className="flex w-full justify-center">
      <GlassDock
        accentColor="#5eb1f7"
        align="bottom"
        className="h-[760px] w-full max-w-[440px] rounded-[44px] shadow-[0_30px_70px_-25px_rgba(0,0,0,0.8)] ring-1 ring-white/10"
        defaultValue="dms"
        glass={DARK_GLASS}
        hoverColor="#ffffff"
        idleColor="#cdd2d8"
        items={ITEMS}
        pillColor="rgba(255,255,255,0.16)"
        tintBlur={16}
        tintColor="34,37,43"
      >
        <SlackScreen />
      </GlassDock>
    </div>
  );
}

export { GlassDockDarkDemo };
```

## Source

#### `glass-dock.tsx`

```tsx
"use client";

import { Glass, isSafariBrowser, useHydrated } from "@/components/ui/glass";
import {
  cubicBezier,
  glassEase,
  MotionValue,
  prefersReducedMotion,
  SpringDriver,
  tween,
} from "@/components/ui/glass-motion";
import { cn } from "@/lib/utils";
import {
  type PointerEvent,
  type ReactNode,
  useCallback,
  useEffect,
  useRef,
  useState,
} from "react";

type GlassMode = "individual" | "combined";
type GlassSpecular = "inside" | "outside" | "none";
type ShadowTone = "neutral" | "warm" | "cool";

interface LiquidGlassConfig {
  blur: { enabled: boolean; value: number };
  mode: GlassMode;
  refraction: { amount: number; enabled: boolean; thickness: number };
  shadow: { tone: ShadowTone; value: number };
  specular: GlassSpecular;
  translucency: { enabled: boolean; value: number };
}

const DEFAULT_LIQUID_GLASS: LiquidGlassConfig = {
  mode: "individual",
  specular: "inside",
  blur: { enabled: false, value: 0 },
  refraction: { enabled: true, amount: 20.2, thickness: 15.9 },
  translucency: { enabled: true, value: 0 },
  shadow: { tone: "neutral", value: 22 },
};

interface ResolvedGlass {
  chroma: number;
  edgeHighlight: number;
  glow: number;
  scale: number;
  tint: number;
}

function resolveGlass(config: LiquidGlassConfig): ResolvedGlass {
  const refr = config.refraction.enabled ? config.refraction.amount / 100 : 0;
  const specOn = config.specular !== "none";
  return {
    scale: refr * 0.5,
    chroma: config.refraction.enabled ? Math.min(0.5, refr * 1.5) : 0,
    tint: config.translucency.enabled ? config.translucency.value / 100 : 0,
    edgeHighlight: specOn ? 0.3 : 0,
    glow: specOn ? 0.12 : 0,
  };
}

const DOCK_W = 392;
const DOCK_H = 84;
const CAP_SCALE = 2;
const BOTTOM_INSET = 18;
const PAD_X = 10;
const PAD_Y = 9;
const ITEM_GAP = 4;
const COL = (DOCK_W - 2 * PAD_X - 3 * ITEM_GAP) / 4;
const LENS_W = COL - 4;
const LENS_H = 64;
const PILL_H = 64;
const PILL_RADIUS = 32;
const BAR_RADIUS = 42;
const BAR_GLASS_TRIM = 42;
const BAR_GLASS_MUL = 0.7;
const POS_SPRING = { stiffness: 90, damping: 18, restDelta: 0.5, restSpeed: 6 };
const MAX_MUL = 0.66;
const LIFT_UP = 0.16;
const LIFT_DOWN = 0.3;
const LENS_GROW = 0.2;
const LENS_TINT = 0.35;
const ARRIVE = 16;
const FADE_EASE = cubicBezier(0, 0, 0.58, 1);

const ACCENT = "#58a6ff";
const IDLE = "rgba(255,255,255,0.82)";
const HOVER = "#ffffff";
const BADGE_BG = "#ff514c";
const PILL_GREY = "rgba(255,255,255,0.16)";
const PILL_SHADOW =
  "inset 0 1px 1px rgba(255,255,255,0.22), 0 1px 3px -1px rgba(0,0,0,0.3)";

const GRID_STYLE = {
  top: PAD_Y,
  right: PAD_X,
  bottom: PAD_Y,
  left: PAD_X,
  gridTemplateColumns: "repeat(4, 1fr)",
  gap: ITEM_GAP,
} as const;

function itemCenter(index: number): number {
  return PAD_X + index * (COL + ITEM_GAP) + COL / 2;
}

function clamp(value: number, lo: number, hi: number): number {
  return value < lo ? lo : value > hi ? hi : value;
}

interface GlassDockItem {
  badge?: ReactNode;
  icon: ReactNode;
  id: string;
  label: string;
}

interface GlassDockProps {
  accentColor?: string;
  align?: "bottom" | "center";
  "aria-label"?: string;
  children?: ReactNode;
  className?: string;
  defaultValue?: string;
  glass?: LiquidGlassConfig;
  hoverColor?: string;
  idleColor?: string;
  items: GlassDockItem[];
  onValueChange?: (id: string) => void;
  pillColor?: string;
  tintBlur?: number;
  tintColor?: string;
  value?: string;
}

function GlassDock({
  accentColor,
  align = "center",
  "aria-label": ariaLabel = "Primary navigation",
  children,
  className,
  defaultValue,
  glass,
  hoverColor,
  idleColor,
  items,
  onValueChange,
  pillColor,
  tintBlur,
  tintColor,
  value,
}: GlassDockProps) {
  const safari = isSafariBrowser();
  const renderSafari = useHydrated() && safari;
  const resolved = resolveGlass(glass ?? DEFAULT_LIQUID_GLASS);
  const accent = accentColor ?? ACCENT;
  const idle = idleColor ?? IDLE;
  const hoverCol = hoverColor ?? HOVER;
  const pillFill = pillColor ?? PILL_GREY;

  const [internal, setInternal] = useState(() => defaultValue ?? items[0]?.id);
  const [hover, setHover] = useState<number | null>(null);
  const active = value ?? internal;
  const activeIndex = Math.max(
    0,
    items.findIndex((item) => item.id === active)
  );
  const activeIndexRef = useRef(activeIndex);
  activeIndexRef.current = activeIndex;

  const rootRef = useRef<HTMLDivElement | null>(null);
  const contentRef = useRef<HTMLDivElement | null>(null);
  const overlayRef = useRef<HTMLDivElement | null>(null);
  const barBoxRef = useRef<HTMLDivElement | null>(null);
  const barMarkerRef = useRef<HTMLDivElement | null>(null);
  const barGlassRef = useRef<HTMLDivElement | null>(null);
  const lensMarkerRef = useRef<HTMLDivElement | null>(null);
  const pillRef = useRef<HTMLDivElement | null>(null);

  const appWrapRef = useRef<HTMLDivElement | null>(null);
  const barWrapRef = useRef<HTMLDivElement | null>(null);
  const barCanvasRef = useRef<HTMLCanvasElement | null>(null);
  const fullCanvasRef = useRef<HTMLCanvasElement | null>(null);
  const scrollElRef = useRef<HTMLElement | null>(null);
  const capturedRef = useRef(false);
  const captureWidthRef = useRef(0);
  const recaptureTimerRef = useRef<ReturnType<typeof setTimeout> | undefined>(
    undefined
  );
  const dockPos = useRef({ x: 0, y: 0 });

  const cx = useRef(new MotionValue(itemCenter(activeIndex)));
  const lift = useRef(new MotionValue(0));
  const frame = useRef(0);
  const initialized = useRef(false);
  const pointerDown = useRef(false);
  const dragAllowed = useRef(false);
  const draggingRef = useRef(false);
  const startX = useRef(0);
  const liftPending = useRef(false);
  const dropping = useRef(false);

  const liftUp = useCallback(() => {
    liftPending.current = false;
    dropping.current = false;
    if (prefersReducedMotion()) {
      lift.current.jump(1);
      return;
    }
    tween(lift.current, 1, LIFT_UP, glassEase);
  }, []);

  const liftDown = useCallback(() => {
    liftPending.current = false;
    dropping.current = true;
    if (prefersReducedMotion()) {
      lift.current.jump(0);
      return;
    }
    tween(lift.current, 0, LIFT_DOWN, FADE_EASE);
  }, []);

  const placeStatic = useCallback(() => {
    const root = rootRef.current;
    const box = barBoxRef.current;
    const mark = barMarkerRef.current;
    if (!(root && box && mark)) {
      return;
    }
    const base = root.getBoundingClientRect();
    const r = box.getBoundingClientRect();
    const bx = r.left - base.left;
    const by = r.top - base.top;
    mark.style.left = `${bx}px`;
    mark.style.top = `${by}px`;
    mark.style.width = `${r.width}px`;
    mark.style.height = `${r.height}px`;
    mark.style.borderRadius = `${BAR_RADIUS}px`;
    const barGlass = barGlassRef.current;
    if (barGlass) {
      barGlass.style.left = `${bx}px`;
      barGlass.style.top = `${by}px`;
      barGlass.style.width = `${r.width - BAR_GLASS_TRIM}px`;
      barGlass.style.height = `${r.height}px`;
      barGlass.style.borderRadius = `${BAR_RADIUS}px`;
    }
  }, []);

  const apply = useCallback(() => {
    frame.current = 0;
    placeStatic();
    const lens = lensMarkerRef.current;
    if (!lens) {
      return;
    }
    const cxNow = cx.current.get();
    if (
      liftPending.current &&
      Math.abs(cxNow - itemCenter(activeIndexRef.current)) <= ARRIVE
    ) {
      liftDown();
    }
    const l = clamp(lift.current.get(), 0, 1);
    const grow = 1 + l * LENS_GROW;
    const lensW = LENS_W * grow;
    const lensH = LENS_H * grow;
    lens.style.left = `${cxNow - lensW / 2}px`;
    lens.style.top = `${(DOCK_H - lensH) / 2}px`;
    lens.style.width = `${lensW}px`;
    lens.style.height = `${lensH}px`;
    lens.style.borderRadius = `${lensH / 2}px`;
    lens.dataset.glassMul = String(l * MAX_MUL);
    lens.dataset.glassTint = String(l * LENS_TINT);
    const pill = pillRef.current;
    if (pill) {
      pill.style.left = `${cxNow - LENS_W / 2}px`;
      pill.style.top = `${(DOCK_H - PILL_H) / 2}px`;
      pill.style.opacity = dropping.current ? "1" : `${1 - l}`;
    }
  }, [liftDown, placeStatic]);

  const schedule = useCallback(() => {
    if (frame.current === 0) {
      frame.current = requestAnimationFrame(apply);
    }
  }, [apply]);

  const driver = useRef<SpringDriver | null>(null);
  if (!driver.current) {
    driver.current = new SpringDriver(cx.current, POS_SPRING, () =>
      itemCenter(activeIndexRef.current)
    );
  }

  const glide = useCallback(() => {
    if (prefersReducedMotion()) {
      cx.current.jump(itemCenter(activeIndexRef.current));
      lift.current.jump(0);
      apply();
      return;
    }
    driver.current?.start();
  }, [apply]);

  const redrawBar = useCallback(() => {
    const full = fullCanvasRef.current;
    const bar = barCanvasRef.current;
    const root = rootRef.current;
    const scrollEl = scrollElRef.current;
    if (!(full && bar && root && scrollEl)) {
      return;
    }
    if (bar.width !== DOCK_W * CAP_SCALE) {
      bar.width = DOCK_W * CAP_SCALE;
      bar.height = DOCK_H * CAP_SCALE;
    }
    const ctx = bar.getContext("2d");
    if (!ctx) {
      return;
    }
    const rootRect = root.getBoundingClientRect();
    const sRect = scrollEl.getBoundingClientRect();
    const srcX =
      (dockPos.current.x - (sRect.left - rootRect.left) + scrollEl.scrollLeft) *
      CAP_SCALE;
    const srcY =
      (dockPos.current.y - (sRect.top - rootRect.top) + scrollEl.scrollTop) *
      CAP_SCALE;
    ctx.clearRect(0, 0, bar.width, bar.height);
    ctx.drawImage(
      full,
      srcX,
      srcY,
      DOCK_W * CAP_SCALE,
      DOCK_H * CAP_SCALE,
      0,
      0,
      bar.width,
      bar.height
    );
  }, []);

  const captureApp = useCallback(() => {
    const wrap = appWrapRef.current;
    if (!(renderSafari && wrap) || capturedRef.current) {
      return;
    }
    captureWidthRef.current = wrap.clientWidth;
    let scrollEl: HTMLElement = wrap;
    for (const el of wrap.querySelectorAll<HTMLElement>("*")) {
      const oy = getComputedStyle(el).overflowY;
      if (
        (oy === "auto" || oy === "scroll") &&
        el.scrollHeight > el.clientHeight + 4
      ) {
        scrollEl = el;
        break;
      }
    }
    scrollElRef.current = scrollEl;
    capturedRef.current = true;
    requestAnimationFrame(() => {
      const fullHeight = scrollEl.scrollHeight;
      import("html2canvas-pro")
        .then(({ default: html2canvas }) =>
          html2canvas(scrollEl, {
            scale: CAP_SCALE,
            backgroundColor: null,
            logging: false,
            height: fullHeight,
            windowHeight: fullHeight,
            onclone: (_doc, clone) => {
              clone.style.overflow = "visible";
              clone.style.height = `${fullHeight}px`;
            },
          })
        )
        .then((canvas) => {
          fullCanvasRef.current = canvas;
          redrawBar();
        })
        .catch(() => {
          capturedRef.current = false;
        });
    });
  }, [redrawBar, renderSafari]);

  const measure = useCallback(() => {
    const root = rootRef.current;
    if (!root) {
      return;
    }
    if (!initialized.current) {
      initialized.current = true;
      const r = root.getBoundingClientRect();
      const x = clamp((r.width - DOCK_W) / 2, 0, Math.max(0, r.width - DOCK_W));
      const y = clamp(
        align === "bottom"
          ? r.height - DOCK_H - BOTTOM_INSET
          : r.height * 0.6 - DOCK_H / 2,
        0,
        Math.max(0, r.height - DOCK_H)
      );
      dockPos.current = { x, y };
      for (const el of [
        contentRef.current,
        overlayRef.current,
        barWrapRef.current,
      ]) {
        if (el) {
          el.style.left = `${x}px`;
          el.style.top = `${y}px`;
        }
      }
      redrawBar();
    }
    apply();
  }, [apply, align, redrawBar]);

  useEffect(() => {
    const off = cx.current.on(schedule);
    const offLift = lift.current.on(schedule);
    cx.current.jump(itemCenter(activeIndexRef.current));
    initialized.current = false;
    measure();
    captureApp();
    const root = rootRef.current;
    const onScroll = () => redrawBar();
    const resize = new ResizeObserver(() => {
      initialized.current = false;
      measure();
      if (renderSafari && root && root.clientWidth !== captureWidthRef.current) {
        capturedRef.current = false;
        if (recaptureTimerRef.current !== undefined) {
          clearTimeout(recaptureTimerRef.current);
        }
        recaptureTimerRef.current = setTimeout(captureApp, 200);
      }
    });
    if (root) {
      resize.observe(root);
      root.addEventListener("scroll", onScroll, true);
    }
    return () => {
      off();
      offLift();
      resize.disconnect();
      root?.removeEventListener("scroll", onScroll, true);
      if (recaptureTimerRef.current !== undefined) {
        clearTimeout(recaptureTimerRef.current);
      }
      cancelAnimationFrame(frame.current);
      driver.current?.stop();
    };
  }, [captureApp, measure, redrawBar, renderSafari, schedule]);

  const select = useCallback(
    (index: number) => {
      const item = items[index];
      if (!item) {
        return;
      }
      if (value === undefined) {
        setInternal(item.id);
      }
      onValueChange?.(item.id);
    },
    [items, onValueChange, value]
  );

  const barLocalX = useCallback(
    (clientX: number): number => {
      const box = barBoxRef.current;
      if (!box) {
        return cx.current.get();
      }
      const r = box.getBoundingClientRect();
      return clamp(clientX - r.left, itemCenter(0), itemCenter(items.length - 1));
    },
    [items.length]
  );

  const nearest = useCallback(
    (localX: number): number => {
      let best = 0;
      let min = Number.POSITIVE_INFINITY;
      for (let i = 0; i < items.length; i++) {
        const dist = Math.abs(localX - itemCenter(i));
        if (dist < min) {
          min = dist;
          best = i;
        }
      }
      return best;
    },
    [items.length]
  );

  const goTo = useCallback(
    (index: number) => {
      if (index !== activeIndexRef.current) {
        liftUp();
      }
      select(index);
      liftPending.current = true;
      glide();
    },
    [glide, liftUp, select]
  );

  const onPointerDown = (event: PointerEvent<HTMLDivElement>) => {
    pointerDown.current = true;
    draggingRef.current = false;
    startX.current = event.clientX;
    dragAllowed.current = nearest(barLocalX(event.clientX)) === activeIndex;
    if (dragAllowed.current) {
      overlayRef.current?.setPointerCapture(event.pointerId);
      driver.current?.stop();
      liftUp();
    }
  };

  const onPointerMove = (event: PointerEvent<HTMLDivElement>) => {
    if (!(pointerDown.current && dragAllowed.current)) {
      return;
    }
    if (!draggingRef.current && Math.abs(event.clientX - startX.current) > 4) {
      draggingRef.current = true;
    }
    if (!draggingRef.current) {
      return;
    }
    const x = barLocalX(event.clientX);
    cx.current.set(x);
    setHover(nearest(x));
  };

  const onPointerUp = (event: PointerEvent<HTMLDivElement>) => {
    if (!pointerDown.current) {
      return;
    }
    pointerDown.current = false;
    if (draggingRef.current) {
      draggingRef.current = false;
      setHover(null);
      select(nearest(barLocalX(event.clientX)));
      liftDown();
      glide();
      return;
    }
    goTo(nearest(barLocalX(startX.current)));
  };

  const iconNodes = items.map((item, index) => {
    const isActive = index === activeIndex;
    const isHover = index === hover;
    const iconColor = isActive ? accent : isHover ? hoverCol : idle;
    const labelColor = isActive ? idle : isHover ? hoverCol : idle;
    return (
      <div
        className="relative grid place-items-center content-center"
        key={item.id}
        style={{ gap: 5, padding: "10px 5px 9px", color: labelColor }}
      >
        <span
          className="grid size-[28px] place-items-center"
          style={{ color: iconColor }}
        >
          {item.icon}
        </span>
        <span
          className="max-w-full overflow-hidden text-ellipsis whitespace-nowrap font-[650] text-[12px] leading-none"
          style={{ color: labelColor }}
        >
          {item.label}
        </span>
        {item.badge == null ? null : (
          <span
            className="absolute grid place-items-center text-[10px] text-white"
            style={{
              top: 4,
              right: 5,
              minWidth: 20,
              height: 18,
              padding: "0 5px",
              borderRadius: 999,
              background: BADGE_BG,
              fontWeight: 750,
            }}
          >
            {item.badge}
          </span>
        )}
      </div>
    );
  });

  const dark =
    typeof document !== "undefined" &&
    document.documentElement.classList.contains("dark");
  const barTintRGB = tintColor ?? (dark ? "58,58,62" : "255,255,255");
  const barTintEff = 0.5 * resolved.tint;
  const barFrostBlur = barTintEff * (tintBlur ?? 12);
  const barFrostFilter =
    barFrostBlur > 0.05
      ? `blur(${barFrostBlur}px) saturate(${1 + 0.5 * barTintEff})`
      : "none";
  const barFrostBg =
    barTintEff > 0.001
      ? `rgba(${barTintRGB},${Math.round(barTintEff * 700) / 1000})`
      : "transparent";

  return (
    <div
      className={cn("relative overflow-hidden", className)}
      onDragStart={(event) => event.preventDefault()}
      ref={rootRef}
    >
      {renderSafari ? (
        <>
          <div className="absolute inset-0" ref={appWrapRef}>
            {children}
          </div>
          <div
            className="pointer-events-none absolute"
            ref={barWrapRef}
            style={{ width: DOCK_W, height: DOCK_H }}
          >
            <Glass
              chroma={0.12}
              className="absolute inset-0"
              depth={12}
              domeDepth={12}
              edgeHighlight={0}
              glow={0}
              lens={
                <div
                  className="absolute inset-0"
                  data-glass-lens
                  style={{ borderRadius: BAR_RADIUS }}
                />
              }
              reveal
              scaleX={resolved.scale}
              scaleY={resolved.scale * 1.1}
              tint={0}
            >
              <canvas
                className="absolute inset-0 h-full w-full"
                ref={barCanvasRef}
              />
            </Glass>
            <div
              className="absolute inset-0"
              style={{
                borderRadius: BAR_RADIUS,
                background: barFrostBg,
                backdropFilter: barFrostFilter,
                WebkitBackdropFilter: barFrostFilter,
              }}
            />
          </div>
        </>
      ) : (
        <Glass
          chroma={0.12}
          className="pointer-events-none absolute inset-0"
          depth={12}
          domeDepth={12}
          edgeHighlight={0}
          glow={0}
          lens={
            <>
              <div
                className="absolute"
                data-glass-edge-highlight={0}
                data-glass-glow={0}
                data-glass-lens
                data-glass-mul={0}
                ref={barMarkerRef}
              />
              <div
                className="absolute"
                data-glass-edge-highlight={0}
                data-glass-glow={0}
                data-glass-lens
                data-glass-mul={BAR_GLASS_MUL}
                data-glass-tint={0}
                ref={barGlassRef}
              />
            </>
          }
          scaleX={resolved.scale}
          scaleY={resolved.scale}
          tint={resolved.tint}
          tintBlur={tintBlur ?? 12}
          tintColor={tintColor}
        >
          {children}
        </Glass>
      )}
      <div
        className="pointer-events-none absolute"
        ref={contentRef}
        style={{ width: DOCK_W, height: DOCK_H }}
      >
        <Glass
          chroma={0.5}
          className="absolute inset-0"
          depth={14}
          domeDepth={20}
          edgeHighlight={resolved.edgeHighlight}
          glow={resolved.glow}
          lens={
            <div
              className="absolute"
              data-glass-dome-depth={20}
              data-glass-lens
              data-glass-mul={0}
              ref={lensMarkerRef}
            />
          }
          scaleX={resolved.scale}
          scaleY={safari ? resolved.scale * 1.1 : resolved.scale}
          tint={0}
          tintBlur={4}
        >
          <div className="absolute inset-0 overflow-hidden">
            <div
              className="pointer-events-none absolute"
              ref={pillRef}
              style={{
                width: LENS_W,
                height: PILL_H,
                borderRadius: PILL_RADIUS,
                background: pillFill,
                boxShadow: PILL_SHADOW,
              }}
            />
            <div className="absolute grid text-white" style={GRID_STYLE}>
              {iconNodes}
            </div>
          </div>
        </Glass>
      </div>
      <div
        aria-label={ariaLabel}
        className="absolute touch-none select-none"
        onPointerCancel={onPointerUp}
        onPointerDown={onPointerDown}
        onPointerMove={onPointerMove}
        onPointerUp={onPointerUp}
        ref={overlayRef}
        style={{ width: DOCK_W, height: DOCK_H }}
      >
        <div className="relative size-full" ref={barBoxRef}>
          <div className="absolute grid" style={GRID_STYLE}>
            {items.map((item, index) => (
              <button
                aria-current={index === activeIndex ? "page" : undefined}
                aria-label={item.label}
                className={cn(
                  "rounded-[38px] outline-none",
                  index === activeIndex
                    ? "cursor-grab active:cursor-grabbing"
                    : "cursor-pointer"
                )}
                key={item.id}
                onClick={(event) => {
                  if (event.detail === 0) {
                    goTo(index);
                  }
                }}
                onPointerEnter={() => {
                  if (!draggingRef.current) {
                    setHover(index);
                  }
                }}
                onPointerLeave={() => {
                  if (!draggingRef.current) {
                    setHover((h) => (h === index ? null : h));
                  }
                }}
                type="button"
              />
            ))}
          </div>
        </div>
      </div>
    </div>
  );
}

export { DEFAULT_LIQUID_GLASS, GlassDock, resolveGlass };
export type {
  GlassDockItem,
  GlassDockProps,
  GlassMode,
  GlassSpecular,
  LiquidGlassConfig,
  ShadowTone,
};
```

---

# Glass Input

> An iOS search bar: a text field inside a frosted glass capsule with a leading icon slot. Focusing glows in a soft ring while the tint lifts slightly, so the field reads as raised glass while you type.

## Install

```bash
npx shadcn@latest add https://loreglasses.com/r/glass-input.json
# or, with the @lore-glass namespace registered:
npx shadcn@latest add @lore-glass/glass-input
```

## Props

### GlassInput

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `height` | `number` | `44` | Capsule height in px. The radius is always height / 2. |
| `icon` | `ReactNode` | `undefined` | Leading icon slot. |
| `tint` | `number` | `0.5` | Glass tint of the capsule from 0 (clear) to 1 (opaque). |
| `tintColor` | `string` | `theme` | Tint color as an r,g,b triple. |
| `inputClassName` | `string` | `undefined` | Classes for the inner input element. className styles the capsule. |
| `onValueChange` | `(value: string) => void` | `undefined` | Convenience change callback from Base UI Input, alongside the native onChange. |
| `...props` | `Input.Props` | — | All native input props are forwarded. |

## Usage

```tsx
import { Search } from "@/components/docs/icons";
import { GlassInput } from "@/components/ui/glass-input";

function GlassInputDemo({ tint }: { tint?: number }) {
  return (
    <GlassInput
      className="w-72"
      icon={<Search />}
      placeholder="Search components"
      tint={tint}
    />
  );
}

export { GlassInputDemo };
```

## Source

#### `glass-input.tsx`

```tsx
"use client";

import { Input as InputPrimitive } from "@base-ui/react/input";
import {
  GlassSurface,
  type GlassSurfaceHandle,
} from "@/components/ui/glass-surface";
import {
  glassEase,
  MotionValue,
  PRESS_DURATION,
  prefersReducedMotion,
  RELEASE_DURATION,
  tween,
} from "@/components/ui/glass-motion";
import { cn } from "@/lib/utils";
import { type ReactNode, useCallback, useEffect, useRef } from "react";

const FOCUS_LIFT = 0.1;

interface GlassInputProps extends InputPrimitive.Props {
  height?: number;
  icon?: ReactNode;
  inputClassName?: string;
  tint?: number;
  tintColor?: string;
}

function GlassInput({
  height = 44,
  icon,
  inputClassName,
  tint = 0.5,
  tintColor,
  className,
  style,
  onFocus,
  onBlur,
  ...props
}: GlassInputProps) {
  const surfaceHandle = useRef<GlassSurfaceHandle | null>(null);
  const ringRef = useRef<HTMLDivElement | null>(null);
  const focusGlow = useRef(new MotionValue(0));
  const frame = useRef(0);

  const apply = useCallback(() => {
    frame.current = 0;
    const v = focusGlow.current.get();
    if (ringRef.current) {
      ringRef.current.style.opacity = String(v);
    }
    surfaceHandle.current?.setTintLift(FOCUS_LIFT * v);
  }, []);

  const schedule = useCallback(() => {
    if (frame.current === 0) {
      frame.current = requestAnimationFrame(apply);
    }
  }, [apply]);

  useEffect(() => {
    const off = focusGlow.current.on(schedule);
    return () => {
      off();
      cancelAnimationFrame(frame.current);
    };
  }, [schedule]);

  return (
    <label
      className={cn("relative inline-flex w-64 items-center", className)}
      style={{ height, borderRadius: height / 2, ...style }}
    >
      <GlassSurface
        aria-hidden="true"
        blur={10}
        className="absolute inset-0"
        handleRef={surfaceHandle}
        radius={height / 2}
        tint={tint}
        tintColor={tintColor}
      />
      <div
        aria-hidden="true"
        className="pointer-events-none absolute inset-0 rounded-[inherit]"
        ref={ringRef}
        style={{
          opacity: 0,
          boxShadow:
            "0 0 0 2px rgba(152,150,255,0.7), inset 0 1px 0 0 rgba(255,255,255,0.5)",
        }}
      />
      {icon ? (
        <span className="relative z-10 ml-4 inline-flex shrink-0 items-center justify-center text-[#1d1d1f]/55 dark:text-[#f5f5f7]/55 [&_svg]:size-[18px]">
          {icon}
        </span>
      ) : null}
      <InputPrimitive
        className={cn(
          "relative z-10 h-full w-full min-w-0 rounded-[inherit] bg-transparent text-[#1d1d1f] text-[15px] outline-none placeholder:text-[#1d1d1f]/45 dark:text-[#f5f5f7] dark:placeholder:text-[#f5f5f7]/45",
          icon ? "pr-4 pl-2.5" : "px-4",
          inputClassName
        )}
        onBlur={(e) => {
          const d = prefersReducedMotion() ? 0 : RELEASE_DURATION;
          tween(focusGlow.current, 0, d, glassEase);
          onBlur?.(e);
        }}
        onFocus={(e) => {
          const d = prefersReducedMotion() ? 0 : PRESS_DURATION;
          tween(focusGlow.current, 1, d, glassEase);
          onFocus?.(e);
        }}
        {...props}
      />
    </label>
  );
}

export { GlassInput };
export type { GlassInputProps };
```

---

# Glass Popover

> The iOS context menu: a frosted glass panel attached to its trigger, blurring whatever sits behind it, with icon, label, and sublabel rows. Built on Base UI Menu, so arrow keys, typeahead, and close-on-select work out of the box.

## Install

```bash
npx shadcn@latest add https://loreglasses.com/r/glass-popover.json
# or, with the @lore-glass namespace registered:
npx shadcn@latest add @lore-glass/glass-popover
```

## Props

### GlassPopoverContent

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `side` | `"top" \| "right" \| "bottom" \| "left"` | `"bottom"` | Which side of the trigger the panel opens on. |
| `align` | `"start" \| "center" \| "end"` | `"start"` | Alignment against the trigger. |
| `sideOffset` | `number` | `10` | Gap between trigger and panel in px. |
| `tint` | `number` | `0.55` | Glass tint of the panel from 0 (clear) to 1 (opaque). |
| `tintColor` | `string` | `theme` | Tint color as an r,g,b triple. |

### GlassPopoverItem

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `label` | `string` | `required` | Row label, also used for keyboard typeahead. |
| `sublabel` | `string` | `undefined` | Smaller secondary line under the label. |
| `icon` | `ReactNode` | `undefined` | Leading icon slot. |
| `destructive` | `boolean` | `false` | Tints the row red for destructive actions. |
| `onClick` | `(event) => void` | `undefined` | Action handler. The menu closes on click by default. |

## Usage

```tsx
import { type CSSProperties, type ReactNode, useState } from "react";
import { Ellipsis, Pencil, Share } from "@/components/docs/icons";
import { ShowcaseGrid } from "@/components/docs/showcase-grid";
import { Glass } from "@/components/ui/glass";

const STAGE_W = 300;
const STAGE_H = 320;
const TRIGGER = 44;
const POP = { left: 16, top: 16 + TRIGGER + 12, width: 250, height: 116, radius: 26 };

const frameStyle: CSSProperties = {
  position: "absolute",
  left: "50%",
  top: "50%",
  width: STAGE_W,
  height: STAGE_H,
  transform: "translate(-50%, -50%)",
};

const lensShadow =
  "inset 0 1px 1.5px rgba(255,255,255,0.55), 0 18px 44px -14px rgba(0,0,0,0.32)";

function MenuRow({
  icon,
  label,
  sublabel,
}: {
  icon: ReactNode;
  label: string;
  sublabel?: string;
}) {
  return (
    <div className="mx-2.5 flex items-center gap-4 rounded-[14px] px-3 py-2.5 text-[#1d1d1f]">
      <span className="inline-flex w-6 shrink-0 items-center justify-center [&_svg]:size-5">
        {icon}
      </span>
      <span className="flex min-w-0 flex-col gap-0.5">
        <span className="truncate text-[16px] leading-tight">{label}</span>
        {sublabel ? (
          <span className="truncate text-[13px] leading-tight opacity-55">
            {sublabel}
          </span>
        ) : null}
      </span>
    </div>
  );
}

function GlassPopoverDemo({ tint }: { tint?: number }) {
  const [open, setOpen] = useState(true);

  const triggerLens: CSSProperties = {
    position: "absolute",
    left: 16,
    top: 16,
    width: TRIGGER,
    height: TRIGGER,
    borderRadius: TRIGGER / 2,
    boxShadow: lensShadow,
  };
  const popLens: CSSProperties = {
    position: "absolute",
    left: POP.left,
    top: POP.top,
    width: POP.width,
    height: POP.height,
    borderRadius: POP.radius,
    boxShadow: lensShadow,
  };

  return (
    <div className="absolute inset-0 select-none overflow-hidden rounded-[20px]">
      <Glass
        chroma={0.2}
        className="absolute inset-0"
        depth={12}
        domeDepth={14}
        edgeHighlight={0.3}
        glow={0.12}
        lens={
          <div style={frameStyle}>
            <div data-glass-lens style={triggerLens} />
            {open ? <div data-glass-lens style={popLens} /> : null}
          </div>
        }
        tint={tint}
      >
        <ShowcaseGrid />
      </Glass>

      <div style={frameStyle}>
        <button
          aria-label="More options"
          className="absolute flex cursor-pointer items-center justify-center text-[#1d1d1f] outline-none"
          onClick={() => setOpen((o) => !o)}
          style={{ left: 16, top: 16, width: TRIGGER, height: TRIGGER }}
          type="button"
        >
          <Ellipsis className="size-5" />
        </button>

        {open ? (
          <div
            className="absolute py-2.5"
            style={{ left: POP.left, top: POP.top, width: POP.width }}
          >
            <MenuRow icon={<Pencil />} label="Edit Profile" />
            <MenuRow
              icon={<Share />}
              label="Share Invite Link"
              sublabel="Boost your rate"
            />
          </div>
        ) : null}
      </div>
    </div>
  );
}

export { GlassPopoverDemo };
```

## Source

#### `glass-popover.tsx`

```tsx
"use client";

import { Menu as MenuPrimitive } from "@base-ui/react/menu";
import { GlassSurface } from "@/components/ui/glass-surface";
import { cn } from "@/lib/utils";
import type { ReactNode } from "react";

const GlassPopover = MenuPrimitive.Root;
const GlassPopoverTrigger = MenuPrimitive.Trigger;

interface GlassPopoverContentProps extends MenuPrimitive.Popup.Props {
  align?: MenuPrimitive.Positioner.Props["align"];
  side?: MenuPrimitive.Positioner.Props["side"];
  sideOffset?: number;
  tint?: number;
  tintColor?: string;
}

function GlassPopoverContent({
  align = "start",
  side = "bottom",
  sideOffset = 10,
  tint = 0.55,
  tintColor,
  className,
  children,
  ...props
}: GlassPopoverContentProps) {
  return (
    <MenuPrimitive.Portal>
      <MenuPrimitive.Positioner
        align={align}
        className="z-50 outline-none"
        side={side}
        sideOffset={sideOffset}
      >
        <MenuPrimitive.Popup
          className={cn(
            "origin-[var(--transform-origin)] outline-none transition-[scale,opacity] duration-300 ease-[cubic-bezier(0.34,1.3,0.64,1)] data-[ending-style]:scale-95 data-[ending-style]:opacity-0 data-[ending-style]:duration-150 data-[ending-style]:ease-out data-[starting-style]:scale-[0.6]",
            className
          )}
          {...props}
        >
          <GlassSurface
            blur={30}
            radius={26}
            tint={tint}
            tintColor={tintColor}
          >
            <div className="min-w-[230px] py-2.5">{children}</div>
          </GlassSurface>
        </MenuPrimitive.Popup>
      </MenuPrimitive.Positioner>
    </MenuPrimitive.Portal>
  );
}

interface GlassPopoverItemProps extends MenuPrimitive.Item.Props {
  destructive?: boolean;
  icon?: ReactNode;
  label: string;
  sublabel?: string;
}

function GlassPopoverItem({
  destructive = false,
  icon,
  label,
  sublabel,
  className,
  ...props
}: GlassPopoverItemProps) {
  return (
    <MenuPrimitive.Item
      className={cn(
        "mx-2.5 flex cursor-pointer select-none items-center gap-4 rounded-[14px] px-3 py-2.5 text-[#1d1d1f] outline-none data-[highlighted]:bg-black/8 dark:text-[#f5f5f7] dark:data-[highlighted]:bg-white/12",
        destructive && "text-[#e5484d] dark:text-[#ff6369]",
        className
      )}
      label={label}
      {...props}
    >
      {icon ? (
        <span className="inline-flex w-6 shrink-0 items-center justify-center [&_svg]:size-5">
          {icon}
        </span>
      ) : null}
      <span className="flex min-w-0 flex-col gap-0.5">
        <span className="truncate text-[16px] leading-tight">{label}</span>
        {sublabel ? (
          <span className="truncate text-[13px] leading-tight opacity-55">
            {sublabel}
          </span>
        ) : null}
      </span>
    </MenuPrimitive.Item>
  );
}

function GlassPopoverSeparator({
  className,
  ...props
}: MenuPrimitive.Separator.Props) {
  return (
    <MenuPrimitive.Separator
      className={cn("mx-5 my-2 h-px bg-black/10 dark:bg-white/12", className)}
      {...props}
    />
  );
}

export {
  GlassPopover,
  GlassPopoverContent,
  GlassPopoverItem,
  GlassPopoverSeparator,
  GlassPopoverTrigger,
};
export type { GlassPopoverContentProps, GlassPopoverItemProps };
```

---

# Glass Slider

> An iOS slider whose handle rests as a solid platter and lifts into a clear refracting lens while you drag, keeping the fill value readable through the glass. Overdragging rubber-bands past the ends, and a hidden native range input keeps it accessible.

## Install

```bash
npx shadcn@latest add https://loreglasses.com/r/glass-slider.json
# or, with the @lore-glass namespace registered:
npx shadcn@latest add @lore-glass/glass-slider
```

## Props

### GlassSlider

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `value / defaultValue` | `number` | `50` | Controlled and uncontrolled value. |
| `min / max` | `number` | `0 / 100` | Value range. |
| `step` | `number` | `1` | Snap increment. |
| `onValueChange` | `(value: number) => void` | `undefined` | Called with the snapped value while dragging. |
| `disabled` | `boolean` | `false` | Disables interaction. |
| `ariaLabel` | `string` | `"Value"` | Accessible label for the hidden range input. |

## Usage

```tsx
import { ShowcaseCard } from "@/components/docs/showcase-card";
import { GlassSlider } from "@/components/ui/glass-slider";

function GlassSliderDemo() {
  return (
    <ShowcaseCard>
      <GlassSlider ariaLabel="Volume" defaultValue={38} />
    </ShowcaseCard>
  );
}

export { GlassSliderDemo };
```

## Source

#### `glass-slider.tsx`

```tsx
"use client";

import { Glass, useGlassDark } from "@/components/ui/glass";
import {
  glassEase,
  MotionValue,
  PRESS_DURATION,
  prefersReducedMotion,
  rubberBand,
  SpringDriver,
  TRAVEL_DURATION,
  tween,
} from "@/components/ui/glass-motion";
import { cn } from "@/lib/utils";
import { useCallback, useEffect, useRef, useState } from "react";

const TRACK_W = 240;
const TRACK_H = 6;
const THUMB_H = 22;
const THUMB_W = Math.round(2 * THUMB_H);
const TRAVEL = TRACK_W - THUMB_W;
const LENS_HALF_W = THUMB_W / 2;
const LENS_HALF_H = THUMB_H / 2;
const LENS_R = THUMB_H / 2;
const FAT_H = Math.round(0.75 * THUMB_H);
const RUBBER_OVERSHOOT = TRACK_W * 0.05;
const RUBBER_DAMPENING = 30;
const BLEED =
  Math.ceil(0.5 * Math.max(LENS_HALF_W, LENS_HALF_H) + RUBBER_OVERSHOOT) + 2;
const PRESS_GROW = 1.5;
const TINT_BLUR = 4;
const REST_TINT = 1;
const DEFORM_STIFFNESS = 180;
const DEFORM_DAMPING = 14;
const DEFORM_CAP = 0.35;
const DEFORM_GAIN = 0.012;
const DEFORM_EXP = 0.75;
const HOLD_BOOST = 0.175;

const PRIMARY = "#0a84ff";
const BG4_LIGHT = "#e1dfdf";
const BG4_DARK = "#2a2828";
const SHADOW_STRONG_LIGHT = "rgba(46, 15, 15, 0.12)";
const SHADOW_STRONG_DARK = "rgba(0, 0, 0, 0.5)";

interface GlassSliderProps {
  ariaLabel?: string;
  className?: string;
  defaultValue?: number;
  disabled?: boolean;
  max?: number;
  min?: number;
  onValueChange?: (value: number) => void;
  step?: number;
  value?: number;
}

function GlassSlider({
  value,
  defaultValue = 50,
  min = 0,
  max = 100,
  step = 1,
  onValueChange,
  disabled = false,
  ariaLabel = "Value",
  className,
}: GlassSliderProps) {
  const dark = useGlassDark();
  const [internal, setInternal] = useState(defaultValue);
  const current = value ?? internal;
  const currentRef = useRef(current);
  currentRef.current = current;

  const rootRef = useRef<HTMLDivElement | null>(null);
  const markerRef = useRef<HTMLDivElement | null>(null);
  const brightnessRef = useRef<HTMLDivElement | null>(null);
  const tintRef = useRef<HTMLDivElement | null>(null);
  const restShadowRef = useRef<HTMLDivElement | null>(null);
  const pressShadowRef = useRef<HTMLDivElement | null>(null);
  const fillRef = useRef<HTMLDivElement | null>(null);
  const fatWrapRef = useRef<HTMLDivElement | null>(null);
  const fatFillRef = useRef<HTMLDivElement | null>(null);
  const inputRef = useRef<HTMLInputElement | null>(null);

  const span = Math.max(max - min, 1e-6);
  const toX = useCallback(
    (v: number) => ((v - min) / span) * TRAVEL,
    [min, span]
  );
  const toValue = useCallback(
    (xv: number) => {
      const clamped = Math.min(Math.max(xv, 0), TRAVEL);
      const raw = min + (clamped / TRAVEL) * span;
      return step > 0 ? Math.round((raw - min) / step) * step + min : raw;
    },
    [min, span, step]
  );

  const x = useRef(new MotionValue(toX(current)));
  const lensHalfW = useRef(new MotionValue(LENS_HALF_W));
  const lensHalfH = useRef(new MotionValue(LENS_HALF_H));
  const lensR = useRef(new MotionValue(LENS_R));
  const tintOpacity = useRef(new MotionValue(REST_TINT));
  const tintBlur = useRef(new MotionValue(TINT_BLUR));
  const fatScaleX = useRef(new MotionValue(0.85));
  const fatScaleY = useRef(new MotionValue(0.525));
  const shadowOpacity = useRef(new MotionValue(0));
  const deform = useRef(new MotionValue(0));
  const heldRef = useRef(false);
  const activePointer = useRef<number | null>(null);
  const grabClientX = useRef(0);
  const grabX = useRef(0);
  const frame = useRef(0);

  const deformDriver = useRef<SpringDriver | null>(null);
  if (!deformDriver.current) {
    deformDriver.current = new SpringDriver(
      deform.current,
      { stiffness: DEFORM_STIFFNESS, damping: DEFORM_DAMPING },
      () => {
        const v = Math.abs(x.current.getVelocity());
        const fromVelocity = DEFORM_GAIN * v ** DEFORM_EXP;
        const boost = heldRef.current ? HOLD_BOOST : 0;
        return Math.min(DEFORM_CAP, Math.max(fromVelocity, boost));
      },
      () => !heldRef.current && Math.abs(x.current.getVelocity()) < 0.005
    );
  }
  const startDeform = useCallback(() => {
    if (!prefersReducedMotion()) {
      deformDriver.current?.start();
    }
  }, []);

  const apply = useCallback(() => {
    frame.current = 0;
    const marker = markerRef.current;
    if (!marker) {
      return;
    }
    const xv = Math.min(
      Math.max(x.current.get(), -RUBBER_OVERSHOOT),
      TRAVEL + RUBBER_OVERSHOOT
    );
    const q = deform.current.get();
    const w = 2 * lensHalfW.current.get() * (1 - 0.2 * q);
    const h = 2 * lensHalfH.current.get() * (1 + 0.4 * q);
    const r = lensR.current.get();
    const centerX = BLEED + THUMB_W / 2 + xv;
    const centerY = BLEED + THUMB_H / 2;
    marker.style.width = `${w}px`;
    marker.style.height = `${h}px`;
    marker.style.borderRadius = `${r}px`;
    marker.style.left = `${centerX - w / 2}px`;
    marker.style.top = `${centerY - h / 2}px`;
    if (tintRef.current) {
      const t = tintOpacity.current.get();
      tintRef.current.style.background = `rgba(255,255,255,${t})`;
      const b = tintBlur.current.get();
      const filter = b > 0.05 ? `blur(${b}px)` : "none";
      tintRef.current.style.backdropFilter = filter;
      tintRef.current.style.setProperty("-webkit-backdrop-filter", filter);
    }
    const so = shadowOpacity.current.get();
    if (restShadowRef.current) {
      restShadowRef.current.style.opacity = String(1 - so);
    }
    if (pressShadowRef.current) {
      pressShadowRef.current.style.opacity = String(so);
    }
    const fillW = Math.min(Math.max(xv + THUMB_W / 2, 0), TRACK_W);
    if (fillRef.current) {
      fillRef.current.style.width = `${fillW}px`;
    }
    const progress = TRAVEL > 0 ? Math.max(0, Math.min(1, xv / TRAVEL)) : 0;
    if (fatFillRef.current) {
      fatFillRef.current.style.transform = `translateX(${(progress - 1) * 100}%)`;
    }
    if (fatWrapRef.current) {
      fatWrapRef.current.style.transform = `scale(${fatScaleX.current.get()}, ${fatScaleY.current.get()})`;
    }
  }, []);

  const schedule = useCallback(() => {
    if (frame.current === 0) {
      frame.current = requestAnimationFrame(apply);
    }
  }, [apply]);

  const syncValue = useCallback(() => {
    const next = toValue(x.current.get());
    if (next !== currentRef.current) {
      if (value === undefined) {
        setInternal(next);
      }
      onValueChange?.(next);
    }
  }, [toValue, value, onValueChange]);

  useEffect(() => {
    const values = [
      x.current,
      lensHalfW.current,
      lensHalfH.current,
      lensR.current,
      tintOpacity.current,
      tintBlur.current,
      fatScaleX.current,
      fatScaleY.current,
      shadowOpacity.current,
      deform.current,
    ];
    const subs = values.map((v) => v.on(schedule));
    apply();
    return () => {
      for (const off of subs) {
        off();
      }
      cancelAnimationFrame(frame.current);
      deformDriver.current?.stop();
    };
  }, [apply, schedule]);

  useEffect(() => {
    if (!heldRef.current) {
      const target = toX(current);
      if (Math.abs(x.current.get() - target) > 0.5) {
        const d = prefersReducedMotion() ? 0 : PRESS_DURATION;
        tween(x.current, target, d, glassEase);
        startDeform();
      }
    }
  }, [current, toX, startDeform]);

  const press = useCallback(() => {
    const d = prefersReducedMotion() ? 0 : TRAVEL_DURATION;
    tween(lensHalfW.current, LENS_HALF_W * PRESS_GROW, d, glassEase);
    tween(lensHalfH.current, LENS_HALF_H * PRESS_GROW, d, glassEase);
    tween(lensR.current, LENS_R * PRESS_GROW, d, glassEase);
    tween(tintOpacity.current, 0, d, glassEase);
    tween(tintBlur.current, 0, d, glassEase);
    tween(fatScaleX.current, 0.95, d, glassEase);
    tween(fatScaleY.current, 0.975, d, glassEase);
    tween(shadowOpacity.current, 1, d, glassEase);
  }, []);

  const release = useCallback(() => {
    const d = prefersReducedMotion() ? 0 : PRESS_DURATION;
    tween(lensHalfW.current, LENS_HALF_W, d, glassEase);
    tween(lensHalfH.current, LENS_HALF_H, d, glassEase);
    tween(lensR.current, LENS_R, d, glassEase);
    tween(tintOpacity.current, REST_TINT, d, glassEase);
    tween(tintBlur.current, TINT_BLUR, d, glassEase);
    tween(fatScaleX.current, 0.85, d, glassEase);
    tween(fatScaleY.current, 0.525, d, glassEase);
    tween(shadowOpacity.current, 0, d, glassEase);
  }, []);

  const onPointerDown = useCallback(
    (e: React.PointerEvent<HTMLDivElement>) => {
      if (disabled || activePointer.current !== null) {
        return;
      }
      activePointer.current = e.pointerId;
      e.currentTarget.setPointerCapture(e.pointerId);
      heldRef.current = true;
      inputRef.current?.focus({ preventScroll: true });
      const root = rootRef.current;
      if (!root) {
        return;
      }
      const rect = root.getBoundingClientRect();
      const localX = e.clientX - rect.left - THUMB_W / 2;
      const clamped = Math.max(0, Math.min(TRAVEL, localX));
      x.current.stop();
      x.current.set(clamped);
      syncValue();
      grabClientX.current = e.clientX;
      grabX.current = clamped;
      press();
      startDeform();
    },
    [disabled, press, startDeform, syncValue]
  );

  const onPointerMove = useCallback(
    (e: React.PointerEvent<HTMLDivElement>) => {
      if (e.pointerId !== activePointer.current) {
        return;
      }
      let next = grabX.current + (e.clientX - grabClientX.current);
      if (next < 0) {
        next = -rubberBand(-next, RUBBER_OVERSHOOT, RUBBER_DAMPENING);
      } else if (next > TRAVEL) {
        next =
          TRAVEL + rubberBand(next - TRAVEL, RUBBER_OVERSHOOT, RUBBER_DAMPENING);
      }
      x.current.set(next);
      syncValue();
    },
    [syncValue]
  );

  const onPointerUp = useCallback(
    (e: React.PointerEvent<HTMLDivElement>) => {
      if (e.pointerId !== activePointer.current) {
        return;
      }
      activePointer.current = null;
      heldRef.current = false;
      const target = Math.max(0, Math.min(TRAVEL, x.current.get()));
      const d = prefersReducedMotion() ? 0 : PRESS_DURATION;
      tween(x.current, target, d, glassEase);
      startDeform();
      release();
    },
    [release, startDeform]
  );

  const config = dark
    ? {
        scaleX: 0.133,
        scaleY: 0.135,
        brightness: 0.12,
        specularAngle: 45,
        glowExponent: 1.5,
        edgeExponent: 1.5,
        specularDark: false,
      }
    : {
        scaleX: 0.1,
        scaleY: 0.1,
        brightness: -0.02,
        specularAngle: 30,
        glowExponent: 2,
        edgeExponent: 1,
        specularDark: true,
      };

  return (
    <div
      className={cn("relative inline-block touch-none", className)}
      style={{ flexShrink: 0, width: TRACK_W, height: THUMB_H, overflow: "visible" }}
    >
      <input
        aria-label={ariaLabel}
        className="sr-only"
        max={max}
        min={min}
        onChange={(e) => {
          const next = Number(e.target.value);
          if (value === undefined) {
            setInternal(next);
          }
          onValueChange?.(next);
        }}
        ref={inputRef}
        step={step}
        type="range"
        value={current}
      />
      <div
        aria-hidden="true"
        className="absolute"
        style={{
          left: 0,
          top: (THUMB_H - TRACK_H) / 2,
          width: TRACK_W,
          height: TRACK_H,
          borderRadius: TRACK_H / 2,
        }}
      >
        <div
          className="absolute inset-0 rounded-[inherit]"
          style={{ background: dark ? BG4_DARK : BG4_LIGHT }}
        />
        <div
          className="absolute rounded-[inherit]"
          ref={fillRef}
          style={{
            left: 0,
            top: 0,
            bottom: 0,
            width: toX(current) + THUMB_W / 2,
            background: PRIMARY,
          }}
        />
      </div>
      <Glass
        chroma={0}
        depth={2}
        domeDepth={5}
        edgeExponent={config.edgeExponent}
        edgeHighlight={0.5}
        edgeWidth={1}
        glow={0.4}
        glowExponent={config.glowExponent}
        glowSpread={0.5}
        lens={
          <div className="absolute" data-glass-lens ref={markerRef}>
            <div
              className="absolute inset-0 rounded-[inherit]"
              ref={brightnessRef}
              style={{
                background: config.brightness >= 0 ? "#fff" : "#000",
                opacity: Math.abs(config.brightness),
              }}
            />
            <div className="absolute inset-0 rounded-[inherit]" ref={tintRef} />
            <div
              className="absolute inset-0 rounded-[inherit]"
              ref={restShadowRef}
              style={{
                boxShadow: `0 1.333px 5.333px ${dark ? SHADOW_STRONG_DARK : SHADOW_STRONG_LIGHT}`,
              }}
            />
            <div
              className="absolute inset-0 rounded-[inherit]"
              ref={pressShadowRef}
              style={{
                opacity: 0,
                boxShadow:
                  "0 2px 6px rgba(0, 0, 0, 0.16), inset 0 -4px 10px rgba(0, 0, 0, 0.12)",
              }}
            />
          </div>
        }
        resolution={2}
        reveal
        scaleX={config.scaleX}
        scaleY={config.scaleY}
        specularAngle={config.specularAngle}
        specularDark={config.specularDark}
        specularStrength={1.5}
        splay={0.5}
        style={{
          position: "absolute",
          left: -BLEED,
          top: -BLEED,
          width: TRACK_W + 2 * BLEED,
          height: THUMB_H + 2 * BLEED,
          overflow: "visible",
          pointerEvents: "none",
        }}
      >
        <div
          className="absolute overflow-hidden"
          ref={fatWrapRef}
          style={{
            left: BLEED,
            top: BLEED + (THUMB_H - FAT_H) / 2,
            width: TRACK_W,
            height: FAT_H,
            borderRadius: FAT_H / 2,
            transform: "scale(0.85, 0.525)",
          }}
        >
          <div
            className="absolute inset-0"
            style={{ background: dark ? BG4_DARK : BG4_LIGHT }}
          />
          <div
            className="absolute inset-0 rounded-[inherit]"
            ref={fatFillRef}
            style={{ background: PRIMARY }}
          />
        </div>
      </Glass>
      <div
        aria-hidden="true"
        className="absolute cursor-pointer"
        onPointerCancel={onPointerUp}
        onPointerDown={onPointerDown}
        onPointerMove={onPointerMove}
        onPointerUp={onPointerUp}
        ref={rootRef}
        style={{ left: 0, top: 0, width: TRACK_W, height: THUMB_H }}
      />
    </div>
  );
}

export { GlassSlider };
```

---

# Glass Switch

> The iOS toggle. The thumb rests as an opaque platter and lifts into a clear warping lens on press, deforms with drag velocity like gel, and rubber-bands when dragged past the ends. Holding it keeps the lens raised until you let go.

## Install

```bash
npx shadcn@latest add https://loreglasses.com/r/glass-switch.json
# or, with the @lore-glass namespace registered:
npx shadcn@latest add @lore-glass/glass-switch
```

## Props

### GlassSwitch

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `checked / defaultChecked` | `boolean` | `false` | Controlled and uncontrolled state. |
| `onCheckedChange` | `(checked: boolean) => void` | `undefined` | Called when the state commits. |
| `disabled` | `boolean` | `false` | Disables interaction. |
| `name / value` | `string` | `undefined` | Form integration for the hidden checkbox. |
| `ariaLabel` | `string` | `undefined` | Accessible label for the hidden checkbox. |

## Usage

```tsx
import { ShowcaseCard } from "@/components/docs/showcase-card";
import { GlassSwitch } from "@/components/ui/glass-switch";

function GlassSwitchDemo() {
  return (
    <ShowcaseCard>
      <GlassSwitch ariaLabel="Enable" defaultChecked />
    </ShowcaseCard>
  );
}

export { GlassSwitchDemo };
```

## Source

#### `glass-switch.tsx`

```tsx
"use client";

import { Glass, useGlassDark } from "@/components/ui/glass";
import {
  glassEase,
  MotionValue,
  PRESS_DURATION,
  prefersReducedMotion,
  RELEASE_DURATION,
  rubberBand,
  SpringDriver,
  TRAVEL_DURATION,
  tween,
} from "@/components/ui/glass-motion";
import { cn } from "@/lib/utils";
import { useCallback, useEffect, useRef, useState } from "react";

const TRACK_W = 74;
const TRACK_H = 28;
const THUMB_W = Math.round(0.6 * TRACK_W);
const THUMB_H = TRACK_H - 6;
const INSET = 3;
const TRAVEL = TRACK_W - THUMB_W - 6;
const TRACK_R = TRACK_H / 2;
const LENS_HALF_W = THUMB_W / 2;
const LENS_HALF_H = THUMB_H / 2;
const LENS_R = THUMB_H / 2;
const FILL_H = Math.round(0.75 * TRACK_H);
const RUBBER_OVERSHOOT = TRACK_W * 0.1;
const RUBBER_DAMPENING = 30;
const BLEED =
  Math.ceil(0.5 * Math.max(LENS_HALF_W, LENS_HALF_H) + RUBBER_OVERSHOOT) + 2;
const HOLD_MS = 200;
const DRAG_THRESHOLD = 3;
const TAP_COLLAPSE_MS = 330;
const PRESS_GROW = 1.5;
const TINT_BLUR = 4;
const REST_TINT = 1;
const DEFORM_STIFFNESS = 180;
const DEFORM_DAMPING = 14;
const DEFORM_CAP = 0.35;
const DEFORM_GAIN = 0.012;
const DEFORM_EXP = 0.75;
const HOLD_BOOST = 0.175;

const PRIMARY = "#0a84ff";
const BG4_LIGHT = "#e1dfdf";
const BG4_DARK = "#2a2828";

interface GlassSwitchProps {
  ariaLabel?: string;
  checked?: boolean;
  className?: string;
  defaultChecked?: boolean;
  disabled?: boolean;
  name?: string;
  onCheckedChange?: (checked: boolean) => void;
  value?: string;
}

function GlassSwitch({
  checked,
  defaultChecked = false,
  onCheckedChange,
  disabled = false,
  name,
  value,
  ariaLabel,
  className,
}: GlassSwitchProps) {
  const dark = useGlassDark();
  const [internal, setInternal] = useState(defaultChecked);
  const isOn = checked ?? internal;
  const isOnRef = useRef(isOn);
  isOnRef.current = isOn;

  const markerRef = useRef<HTMLDivElement | null>(null);
  const hitRef = useRef<HTMLDivElement | null>(null);
  const trackRef = useRef<HTMLDivElement | null>(null);
  const fillRef = useRef<HTMLDivElement | null>(null);
  const brightnessRef = useRef<HTMLDivElement | null>(null);
  const tintRef = useRef<HTMLDivElement | null>(null);
  const shadowRef = useRef<HTMLDivElement | null>(null);
  const inputRef = useRef<HTMLInputElement | null>(null);

  const x = useRef(new MotionValue(isOn ? TRAVEL : 0));
  const lensHalfW = useRef(new MotionValue(LENS_HALF_W));
  const lensHalfH = useRef(new MotionValue(LENS_HALF_H));
  const lensR = useRef(new MotionValue(LENS_R));
  const tintOpacity = useRef(new MotionValue(REST_TINT));
  const tintBlur = useRef(new MotionValue(TINT_BLUR));
  const fillScaleX = useRef(new MotionValue(0.85));
  const fillScaleY = useRef(new MotionValue(0.525));
  const shadowOpacity = useRef(new MotionValue(0));
  const deform = useRef(new MotionValue(0));
  const heldRef = useRef(false);
  const frame = useRef(0);

  const deformDriver = useRef<SpringDriver | null>(null);
  if (!deformDriver.current) {
    deformDriver.current = new SpringDriver(
      deform.current,
      { stiffness: DEFORM_STIFFNESS, damping: DEFORM_DAMPING },
      () => {
        const v = Math.abs(x.current.getVelocity());
        const fromVelocity = DEFORM_GAIN * v ** DEFORM_EXP;
        const boost = heldRef.current ? HOLD_BOOST : 0;
        return Math.min(DEFORM_CAP, Math.max(fromVelocity, boost));
      },
      () => !heldRef.current && Math.abs(x.current.getVelocity()) < 0.005
    );
  }
  const startDeform = useCallback(() => {
    if (!prefersReducedMotion()) {
      deformDriver.current?.start();
    }
  }, []);

  const apply = useCallback(() => {
    frame.current = 0;
    const marker = markerRef.current;
    if (!marker) {
      return;
    }
    const xv = Math.min(
      Math.max(x.current.get(), -RUBBER_OVERSHOOT),
      TRAVEL + RUBBER_OVERSHOOT
    );
    const q = deform.current.get();
    const w = 2 * lensHalfW.current.get() * (1 - 0.2 * q);
    const h = 2 * lensHalfH.current.get() * (1 + 0.4 * q);
    const r = lensR.current.get();
    const centerX = BLEED + INSET + THUMB_W / 2 + xv;
    const centerY = BLEED + TRACK_H / 2;
    marker.style.width = `${w}px`;
    marker.style.height = `${h}px`;
    marker.style.borderRadius = `${r}px`;
    marker.style.left = `${centerX - w / 2}px`;
    marker.style.top = `${centerY - h / 2}px`;
    if (tintRef.current) {
      const t = tintOpacity.current.get();
      tintRef.current.style.background = `rgba(255,255,255,${t})`;
      const b = tintBlur.current.get();
      const filter = b > 0.05 ? `blur(${b}px)` : "none";
      tintRef.current.style.backdropFilter = filter;
      tintRef.current.style.setProperty("-webkit-backdrop-filter", filter);
    }
    if (shadowRef.current) {
      shadowRef.current.style.opacity = String(shadowOpacity.current.get());
    }
    if (hitRef.current) {
      hitRef.current.style.transform = `translateX(${xv}px)`;
    }
    const progress = TRAVEL > 0 ? Math.max(0, Math.min(1, xv / TRAVEL)) : 0;
    const fillBg = `color-mix(in srgb, ${dark ? BG4_DARK : BG4_LIGHT}, ${PRIMARY} ${progress * 100}%)`;
    if (trackRef.current) {
      trackRef.current.style.background = fillBg;
    }
    if (fillRef.current) {
      fillRef.current.style.background = fillBg;
      fillRef.current.style.transform = `scale(${fillScaleX.current.get()}, ${fillScaleY.current.get()})`;
    }
  }, [dark]);

  const schedule = useCallback(() => {
    if (frame.current === 0) {
      frame.current = requestAnimationFrame(apply);
    }
  }, [apply]);

  useEffect(() => {
    const values = [
      x.current,
      lensHalfW.current,
      lensHalfH.current,
      lensR.current,
      tintOpacity.current,
      tintBlur.current,
      fillScaleX.current,
      fillScaleY.current,
      shadowOpacity.current,
      deform.current,
    ];
    const subs = values.map((v) => v.on(schedule));
    apply();
    return () => {
      for (const off of subs) {
        off();
      }
      cancelAnimationFrame(frame.current);
      deformDriver.current?.stop();
    };
  }, [apply, schedule]);

  const press = useCallback(() => {
    const d = prefersReducedMotion() ? 0 : PRESS_DURATION;
    tween(lensHalfW.current, LENS_HALF_W * PRESS_GROW, d, glassEase);
    tween(lensHalfH.current, LENS_HALF_H * PRESS_GROW, d, glassEase);
    tween(lensR.current, LENS_R * PRESS_GROW, d, glassEase);
    tween(tintOpacity.current, 0, d, glassEase);
    tween(tintBlur.current, 0, d, glassEase);
    tween(fillScaleX.current, 0.95, d, glassEase);
    tween(fillScaleY.current, 0.975, d, glassEase);
    tween(shadowOpacity.current, 1, d, glassEase);
  }, []);

  const release = useCallback(() => {
    const d = prefersReducedMotion() ? 0 : RELEASE_DURATION;
    tween(lensHalfW.current, LENS_HALF_W, d, glassEase);
    tween(lensHalfH.current, LENS_HALF_H, d, glassEase);
    tween(lensR.current, LENS_R, d, glassEase);
    tween(tintOpacity.current, REST_TINT, d, glassEase);
    tween(tintBlur.current, TINT_BLUR, d, glassEase);
    tween(fillScaleX.current, 0.85, d, glassEase);
    tween(fillScaleY.current, 0.525, d, glassEase);
    tween(shadowOpacity.current, 0, d, glassEase);
  }, []);

  const commit = useCallback(
    (next: boolean) => {
      if (next !== isOnRef.current) {
        if (checked === undefined) {
          setInternal(next);
        }
        onCheckedChange?.(next);
      }
    },
    [checked, onCheckedChange]
  );

  const travelTo = useCallback(
    (on: boolean, onComplete?: () => void) => {
      const d = prefersReducedMotion() ? 0 : TRAVEL_DURATION;
      tween(x.current, on ? TRAVEL : 0, d, glassEase, onComplete);
      startDeform();
    },
    [startDeform]
  );

  const stateRef = useRef<"idle" | "pending" | "hold" | "tap">("idle");
  const holdTimer = useRef(0);
  const tapTimer = useRef(0);
  const activePointer = useRef<number | null>(null);
  const dragStartX = useRef(0);
  const grabX = useRef(0);
  const dragging = useRef(false);
  const suppressClick = useRef(false);
  const alive = useRef(true);

  useEffect(
    () => () => {
      alive.current = false;
      clearTimeout(holdTimer.current);
      clearTimeout(tapTimer.current);
    },
    []
  );

  useEffect(() => {
    if (!heldRef.current && stateRef.current !== "tap") {
      const target = isOn ? TRAVEL : 0;
      if (Math.abs(x.current.get() - target) > 0.5) {
        travelTo(isOn);
      }
    }
  }, [isOn, travelTo]);

  const tap = useCallback(
    (next: boolean) => {
      if (suppressClick.current) {
        return;
      }
      commit(next);
      if (stateRef.current === "idle") {
        stateRef.current = "tap";
        press();
        heldRef.current = true;
        startDeform();
        clearTimeout(tapTimer.current);
        tapTimer.current = window.setTimeout(() => {
          heldRef.current = false;
          release();
        }, TAP_COLLAPSE_MS);
        travelTo(next, () => {
          if (alive.current && stateRef.current === "tap") {
            stateRef.current = "idle";
          }
        });
      }
    },
    [commit, press, release, startDeform, travelTo]
  );

  const onPointerDown = useCallback(
    (e: React.PointerEvent<HTMLDivElement>) => {
      if (disabled || activePointer.current !== null) {
        return;
      }
      activePointer.current = e.pointerId;
      e.currentTarget.setPointerCapture(e.pointerId);
      dragStartX.current = e.clientX;
      grabX.current = x.current.get();
      dragging.current = false;
      suppressClick.current = true;
      clearTimeout(holdTimer.current);
      clearTimeout(tapTimer.current);
      stateRef.current = "pending";
      holdTimer.current = window.setTimeout(() => {
        if (stateRef.current === "pending") {
          stateRef.current = "hold";
          x.current.stop();
          press();
          heldRef.current = true;
          startDeform();
        }
      }, HOLD_MS);
    },
    [disabled, press, startDeform]
  );

  const onPointerMove = useCallback(
    (e: React.PointerEvent<HTMLDivElement>) => {
      if (e.pointerId !== activePointer.current) {
        return;
      }
      const delta = e.clientX - dragStartX.current;
      if (!dragging.current) {
        if (Math.abs(delta) < DRAG_THRESHOLD) {
          return;
        }
        dragging.current = true;
        x.current.stop();
        grabX.current = x.current.get();
        dragStartX.current = e.clientX;
        clearTimeout(holdTimer.current);
        heldRef.current = true;
        startDeform();
        if (stateRef.current !== "hold") {
          stateRef.current = "hold";
          press();
        }
      }
      let next = grabX.current + (e.clientX - dragStartX.current);
      if (next < 0) {
        next = -rubberBand(-next, RUBBER_OVERSHOOT, RUBBER_DAMPENING);
      } else if (next > TRAVEL) {
        next =
          TRAVEL + rubberBand(next - TRAVEL, RUBBER_OVERSHOOT, RUBBER_DAMPENING);
      }
      x.current.set(next);
    },
    [press, startDeform]
  );

  const onPointerUp = useCallback(
    (e: React.PointerEvent<HTMLDivElement>) => {
      if (e.pointerId !== activePointer.current) {
        return;
      }
      activePointer.current = null;
      clearTimeout(holdTimer.current);
      if (dragging.current) {
        stateRef.current = "idle";
        heldRef.current = false;
        release();
        const next = Math.max(0, Math.min(TRAVEL, x.current.get())) > TRAVEL / 2;
        travelTo(next);
        commit(next);
        requestAnimationFrame(() => {
          suppressClick.current = false;
        });
      } else if (
        stateRef.current === "pending" ||
        stateRef.current === "tap"
      ) {
        stateRef.current = "tap";
        suppressClick.current = false;
        press();
        heldRef.current = true;
        startDeform();
        clearTimeout(tapTimer.current);
        tapTimer.current = window.setTimeout(() => {
          heldRef.current = false;
          release();
        }, TAP_COLLAPSE_MS);
        const next = !isOnRef.current;
        commit(next);
        suppressClick.current = true;
        travelTo(next, () => {
          if (alive.current && stateRef.current === "tap") {
            stateRef.current = "idle";
          }
        });
        requestAnimationFrame(() => {
          suppressClick.current = false;
        });
      } else if (stateRef.current === "hold") {
        stateRef.current = "idle";
        heldRef.current = false;
        release();
        travelTo(isOnRef.current);
        requestAnimationFrame(() => {
          suppressClick.current = false;
        });
      } else {
        suppressClick.current = false;
      }
    },
    [commit, press, release, startDeform, travelTo]
  );

  const onPointerCancel = useCallback(
    (e: React.PointerEvent<HTMLDivElement>) => {
      if (e.pointerId !== activePointer.current) {
        return;
      }
      activePointer.current = null;
      clearTimeout(holdTimer.current);
      heldRef.current = false;
      stateRef.current = "idle";
      release();
      travelTo(isOnRef.current);
      requestAnimationFrame(() => {
        suppressClick.current = false;
      });
    },
    [release, travelTo]
  );

  const config = dark
    ? {
        brightness: 0.12,
        specularAngle: 45,
        specularStrength: 1,
        glowExponent: 1.5,
        edgeWidth: 2,
        edgeExponent: 1.5,
        specularDark: false,
      }
    : {
        brightness: -0.02,
        specularAngle: 30,
        specularStrength: 1.5,
        glowExponent: 2,
        edgeWidth: 1.5,
        edgeExponent: 1,
        specularDark: true,
      };

  return (
    <label
      className={cn(
        "relative block cursor-pointer rounded-full has-[input:disabled]:cursor-not-allowed has-[input:disabled]:opacity-40 has-[input:focus-visible]:outline-2 has-[input:focus-visible]:outline-[#0a84ff] has-[input:focus-visible]:outline-offset-3",
        className
      )}
      style={{ flexShrink: 0, width: TRACK_W, height: TRACK_H, overflow: "visible" }}
    >
      <input
        aria-label={ariaLabel}
        checked={isOn}
        className="sr-only"
        disabled={disabled}
        name={name}
        onChange={(e) => tap(e.target.checked)}
        onClick={(e) => {
          if (suppressClick.current) {
            e.preventDefault();
          }
        }}
        onKeyDown={(e) => {
          if (e.key === "Enter") {
            e.preventDefault();
            tap(!isOn);
          }
        }}
        ref={inputRef}
        role="switch"
        type="checkbox"
        value={value}
      />
      <div
        aria-hidden="true"
        className="absolute"
        style={{
          left: 0,
          top: 0,
          width: TRACK_W,
          height: TRACK_H,
          borderRadius: TRACK_R,
        }}
        ref={trackRef}
      />
      <Glass
        chroma={0}
        depth={2}
        domeDepth={6}
        edgeHighlight={0.5}
        edgeWidth={config.edgeWidth}
        edgeExponent={config.edgeExponent}
        glow={0.4}
        glowExponent={config.glowExponent}
        glowSpread={0.5}
        lens={
          <div className="absolute" data-glass-lens ref={markerRef}>
            <div
              className="absolute inset-0 rounded-[inherit]"
              ref={brightnessRef}
              style={{
                background: config.brightness >= 0 ? "#fff" : "#000",
                opacity: Math.abs(config.brightness),
              }}
            />
            <div className="absolute inset-0 rounded-[inherit]" ref={tintRef} />
            <div
              className="absolute inset-0 rounded-[inherit]"
              ref={shadowRef}
              style={{
                opacity: 0,
                boxShadow:
                  "0 2px 6px rgba(0, 0, 0, 0.16), inset 0 -4px 10px rgba(0, 0, 0, 0.12)",
              }}
            />
          </div>
        }
        resolution={2}
        reveal
        scaleX={0.25}
        scaleY={0.25}
        specularAngle={config.specularAngle}
        specularDark={config.specularDark}
        specularStrength={config.specularStrength}
        splay={0.4}
        style={{
          position: "absolute",
          left: -BLEED,
          top: -BLEED,
          width: TRACK_W + 2 * BLEED,
          height: TRACK_H + 2 * BLEED,
          overflow: "visible",
          pointerEvents: "none",
        }}
      >
        <div
          className="absolute"
          style={{
            left: BLEED,
            top: BLEED + (TRACK_H - FILL_H) / 2,
            width: TRACK_W,
            height: FILL_H,
            borderRadius: FILL_H / 2,
            transform: "scale(0.85, 0.525)",
          }}
          ref={fillRef}
        />
      </Glass>
      <div
        className="absolute touch-none select-none"
        onPointerCancel={onPointerCancel}
        onPointerDown={onPointerDown}
        onPointerMove={onPointerMove}
        onPointerUp={onPointerUp}
        ref={hitRef}
        style={{
          left: INSET,
          top: INSET,
          width: THUMB_W,
          height: THUMB_H,
          willChange: "transform",
        }}
      />
    </label>
  );
}

export { GlassSwitch };
```

---

# Glass Tabs

> Base UI tabs where the selection indicator is a glass lens. It springs between options, stretching like a droplet with velocity, and sits behind the crisp labels so they stay perfectly legible while it slides.

## Install

```bash
npx shadcn@latest add https://loreglasses.com/r/glass-tabs.json
# or, with the @lore-glass namespace registered:
npx shadcn@latest add @lore-glass/glass-tabs
```

## Props

### Tabs

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `value / defaultValue` | `string` | `undefined` | Controlled and uncontrolled selected tab. |
| `onValueChange` | `(value) => void` | `undefined` | Called when the selection changes. |

### TabsList

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `tint` | `number` | `0` | Glass tint of the selection lens from 0 (clear) to 1 (opaque). |

### TabsTrigger

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `value` | `string` | `required` | Tab identifier this trigger selects. |

## Usage

```tsx
import { Chart, Gear, Grid, House } from "@/components/docs/icons";
import { ShowcaseCard } from "@/components/docs/showcase-card";
import { Tabs, TabsList, TabsTrigger } from "@/components/ui/glass-tabs";

const ITEMS = [
  { value: "home", label: "Home", Icon: House },
  { value: "library", label: "Library", Icon: Grid },
  { value: "stats", label: "Stats", Icon: Chart },
  { value: "settings", label: "Settings", Icon: Gear },
];

function GlassTabsDemo({ tint }: { tint?: number }) {
  return (
    <ShowcaseCard>
      <Tabs defaultValue="home">
        <TabsList tint={tint}>
          {ITEMS.map(({ value, label, Icon }) => (
            <TabsTrigger key={value} value={value}>
              <Icon className="size-[18px]" />
              {label}
            </TabsTrigger>
          ))}
        </TabsList>
      </Tabs>
    </ShowcaseCard>
  );
}

export { GlassTabsDemo };
```

## Source

#### `glass-tabs.tsx`

```tsx
"use client";

import { Tabs as TabsPrimitive } from "@base-ui/react/tabs";
import { Glass, isSafariBrowser, useGlassDark } from "@/components/ui/glass";
import {
  MotionValue,
  prefersReducedMotion,
  SpringDriver,
} from "@/components/ui/glass-motion";
import { cn } from "@/lib/utils";
import { useCallback, useEffect, useRef } from "react";

const PAD_X = 40;
const PAD_Y = 80;
const INDICATOR_SPRING = { stiffness: 50, damping: 13 };
const DEFORM_SPRING = { stiffness: 66, damping: 9 };
const VELOCITY_SCALE = 0.134;
const DEFORM_CLAMP = 0.3;
const SQUEEZE_X = 0.3;
const STRETCH_X = 2;
const RATIO_Y = 4;

const BG1_LIGHT = "#faf9f9";
const BG1_DARK = "#100f0f";
const BORDER1_LIGHT = "#2e0f0f14";
const BORDER1_DARK = "#ffffff14";
const BODY_LIGHT = "#fff";
const BODY_DARK = "#100f0f";

function Tabs({ className, ...props }: TabsPrimitive.Root.Props) {
  return (
    <TabsPrimitive.Root
      className={cn("flex flex-col gap-3", className)}
      data-slot="tabs"
      {...props}
    />
  );
}

interface TabsListProps extends TabsPrimitive.List.Props {
  tint?: number;
}

function TabsList({
  className,
  children,
  tint = 0,
  ...props
}: TabsListProps) {
  const dark = useGlassDark();
  const safari = isSafariBrowser();
  const listRef = useRef<HTMLDivElement | null>(null);
  const markerRef = useRef<HTMLDivElement | null>(null);

  const cx = useRef(new MotionValue(0));
  const cy = useRef(new MotionValue(0));
  const hw = useRef(new MotionValue(0));
  const hh = useRef(new MotionValue(0));
  const deform = useRef(new MotionValue(0));
  const initialized = useRef(false);
  const frame = useRef(0);

  const apply = useCallback(() => {
    frame.current = 0;
    const marker = markerRef.current;
    if (!marker) {
      return;
    }
    const q = Math.max(0, deform.current.get());
    const widthFactor = 1 - q * (q > 0 ? SQUEEZE_X : STRETCH_X);
    const heightFactor = 1 + q * RATIO_Y;
    const w = Math.max(hw.current.get() * 2 * widthFactor, 0);
    const h = Math.max(hh.current.get() * 2 * heightFactor, 0);
    marker.style.width = `${w}px`;
    marker.style.height = `${h}px`;
    marker.style.borderRadius = `${Math.min(w, h) / 2}px`;
    marker.style.left = `${PAD_X + cx.current.get() - w / 2}px`;
    marker.style.top = `${PAD_Y + cy.current.get() - h / 2}px`;
  }, []);

  const schedule = useCallback(() => {
    if (frame.current === 0) {
      frame.current = requestAnimationFrame(apply);
    }
  }, [apply]);

  const springTargets = useRef({ cx: 0, cy: 0, hw: 0, hh: 0 });
  const springDrivers = useRef<SpringDriver[] | null>(null);
  if (!springDrivers.current) {
    springDrivers.current = [
      new SpringDriver(cx.current, INDICATOR_SPRING, () => springTargets.current.cx),
      new SpringDriver(cy.current, INDICATOR_SPRING, () => springTargets.current.cy),
      new SpringDriver(hw.current, INDICATOR_SPRING, () => springTargets.current.hw),
      new SpringDriver(hh.current, INDICATOR_SPRING, () => springTargets.current.hh),
    ];
  }

  const deformDriver = useRef<SpringDriver | null>(null);
  if (!deformDriver.current) {
    deformDriver.current = new SpringDriver(
      deform.current,
      DEFORM_SPRING,
      () => {
        const list = listRef.current;
        const width = list
          ? list.getBoundingClientRect().width + 2 * PAD_X
          : 1;
        const vNorm = Math.abs(cx.current.getVelocity()) / Math.max(width, 1);
        return Math.min(DEFORM_CLAMP, Math.sqrt(vNorm) * VELOCITY_SCALE);
      },
      () => Math.abs(cx.current.getVelocity()) < 0.005
    );
  }

  const measure = useCallback(() => {
    const list = listRef.current;
    if (!list) {
      return;
    }
    const active = list.querySelector<HTMLElement>('[aria-selected="true"]');
    if (!active) {
      return;
    }
    const listRect = list.getBoundingClientRect();
    const rect = active.getBoundingClientRect();
    const targets = springTargets.current;
    targets.cx = rect.left - listRect.left + rect.width / 2;
    targets.cy = rect.top - listRect.top + rect.height / 2;
    targets.hw = rect.width / 2;
    targets.hh = rect.height / 2;
    if (!initialized.current || prefersReducedMotion()) {
      initialized.current = true;
      cx.current.jump(targets.cx);
      cy.current.jump(targets.cy);
      hw.current.jump(targets.hw);
      hh.current.jump(targets.hh);
      apply();
      return;
    }
    for (const driver of springDrivers.current ?? []) {
      driver.start();
    }
    deformDriver.current?.start();
  }, [apply]);

  useEffect(() => {
    const subs = [
      cx.current.on(() => {
        schedule();
        deformDriver.current?.start();
      }),
      cy.current.on(schedule),
      hw.current.on(schedule),
      hh.current.on(schedule),
      deform.current.on(schedule),
    ];
    measure();
    const list = listRef.current;
    const observer = new MutationObserver(measure);
    if (list) {
      observer.observe(list, {
        subtree: true,
        attributes: true,
        attributeFilter: ["aria-selected"],
      });
    }
    const resize = new ResizeObserver(() => {
      initialized.current = false;
      measure();
    });
    if (list) {
      resize.observe(list);
    }
    return () => {
      for (const off of subs) {
        off();
      }
      observer.disconnect();
      resize.disconnect();
      cancelAnimationFrame(frame.current);
      for (const driver of springDrivers.current ?? []) {
        driver.stop();
      }
      deformDriver.current?.stop();
    };
  }, [measure, schedule]);

  const config = dark
    ? {
        brightness: 0.06,
        specularAngle: 45,
        glow: 0.5,
        glowSpread: 0.3,
        glowExponent: 1.5,
        edgeHighlight: 0.6,
        edgeWidth: 1,
        edgeExponent: 1.5,
        specularDark: false,
      }
    : {
        brightness: -0.04,
        specularAngle: 28,
        glow: 0,
        glowSpread: 0.5,
        glowExponent: 3,
        edgeHighlight: 0.15,
        edgeWidth: 1.5,
        edgeExponent: 1,
        specularDark: true,
      };

  const pillStyle = {
    background: dark ? BG1_DARK : BG1_LIGHT,
    border: `1px solid ${dark ? BORDER1_DARK : BORDER1_LIGHT}`,
  };

  return (
    <TabsPrimitive.List
      className={cn("relative inline-flex rounded-full p-[2px]", className)}
      data-slot="tabs-list"
      ref={listRef}
      style={pillStyle}
      {...props}
    >
      <Glass
        chroma={0.1}
        className="pointer-events-none absolute z-0"
        depth={2.5}
        domeDepth={0}
        edgeExponent={config.edgeExponent}
        edgeHighlight={config.edgeHighlight}
        edgeWidth={config.edgeWidth}
        glow={config.glow}
        glowExponent={config.glowExponent}
        glowSpread={config.glowSpread}
        lens={
          <div className="absolute" data-glass-lens ref={markerRef}>
            <div
              className="absolute inset-0 rounded-[inherit]"
              style={{
                background: config.brightness >= 0 ? "#fff" : "#000",
                opacity: Math.abs(config.brightness),
              }}
            />
          </div>
        }
        reveal
        scaleX={0.045}
        scaleY={safari ? 0.075 : 0.025}
        specularAngle={config.specularAngle}
        specularDark={config.specularDark}
        specularStrength={1}
        splay={1}
        tint={tint}
        style={{
          left: -PAD_X,
          top: -PAD_Y,
          width: `calc(100% + ${2 * PAD_X}px)`,
          height: `calc(100% + ${2 * PAD_Y}px)`,
        }}
      >
        <div
          className="absolute inset-0"
          style={{ background: dark ? BODY_DARK : BODY_LIGHT }}
        />
      </Glass>
      <div className="relative z-10 flex">{children}</div>
    </TabsPrimitive.List>
  );
}

function TabsTrigger({ className, ...props }: TabsPrimitive.Tab.Props) {
  return (
    <TabsPrimitive.Tab
      className={cn(
        "inline-flex cursor-pointer items-center gap-[6px] whitespace-nowrap rounded-full px-[13px] py-[10px] font-medium text-[#727274] text-sm leading-none transition-colors hover:text-[#5a5858] focus-visible:shadow-[0_0_0_2px_#9896ff] focus-visible:outline-none disabled:pointer-events-none disabled:opacity-50 data-[active]:text-black dark:text-[#8f8e8e] dark:hover:text-[#bcbbbb] dark:data-[active]:text-white",
        className
      )}
      data-slot="tabs-trigger"
      {...props}
    />
  );
}

function TabsContent({ className, ...props }: TabsPrimitive.Panel.Props) {
  return (
    <TabsPrimitive.Panel
      className={cn(
        "ring-offset-background focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2",
        className
      )}
      data-slot="tabs-content"
      {...props}
    />
  );
}

export { Tabs, TabsContent, TabsList, TabsTrigger };
```

---

# Glass Tooltip

> A small frosted glass chip that scales in from its anchor on hover. Wrap a group in GlassTooltipProvider and adjacent tooltips share one delay, so moving between buttons feels instant, the same grouping iOS toolbars use.

## Install

```bash
npx shadcn@latest add https://loreglasses.com/r/glass-tooltip.json
# or, with the @lore-glass namespace registered:
npx shadcn@latest add @lore-glass/glass-tooltip
```

## Props

### GlassTooltipProvider

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `delay` | `number` | `600` | Hover delay in ms before the first tooltip opens. |
| `closeDelay` | `number` | `0` | Delay in ms before a tooltip closes. |
| `timeout` | `number` | `400` | Grace window in ms during which moving to a neighboring trigger opens its tooltip instantly. |

### GlassTooltipContent

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `side` | `"top" \| "right" \| "bottom" \| "left"` | `"top"` | Which side of the trigger the chip appears on. |
| `align` | `"start" \| "center" \| "end"` | `"center"` | Alignment against the trigger. |
| `sideOffset` | `number` | `8` | Gap between trigger and chip in px. |
| `tint` | `number` | `0.6` | Glass tint of the chip from 0 (clear) to 1 (opaque). |
| `tintColor` | `string` | `theme` | Tint color as an r,g,b triple. |

## Usage

```tsx
import { type CSSProperties, useState } from "react";
import { Bell, Gear, Share } from "@/components/docs/icons";
import { ShowcaseGrid } from "@/components/docs/showcase-grid";
import { Glass } from "@/components/ui/glass";

const STAGE_W = 380;
const STAGE_H = 200;
const SIZE = 52;
const GAP = 26;
const ROW_Y = STAGE_H / 2 - SIZE / 2 + 18;
const TIP_H = 36;
const TIP_GAP = 14;

const ITEMS = [
  { id: "bell", label: "Notifications", Icon: Bell, tipW: 118 },
  { id: "gear", label: "Settings", Icon: Gear, tipW: 86 },
  { id: "share", label: "Share", Icon: Share, tipW: 70 },
];

const TOTAL = ITEMS.length * SIZE + (ITEMS.length - 1) * GAP;
const START = (STAGE_W - TOTAL) / 2;
const ITEM_X = ITEMS.map((_, i) => START + i * (SIZE + GAP));

const frameStyle: CSSProperties = {
  position: "absolute",
  left: "50%",
  top: "50%",
  width: STAGE_W,
  height: STAGE_H,
  transform: "translate(-50%, -50%)",
};

const lensShadow =
  "inset 0 1px 1.5px rgba(255,255,255,0.55), 0 14px 30px -12px rgba(0,0,0,0.35)";

function GlassTooltipDemo({ tint }: { tint?: number }) {
  const [hovered, setHovered] = useState<number | null>(0);

  const tip = hovered === null ? null : ITEMS[hovered];
  const tipCx = hovered === null ? 0 : ITEM_X[hovered] + SIZE / 2;
  const tipW = tip?.tipW ?? 0;
  const tipStyle: CSSProperties | null = tip
    ? {
        position: "absolute",
        left: tipCx - tipW / 2,
        top: ROW_Y - TIP_GAP - TIP_H,
        width: tipW,
        height: TIP_H,
        borderRadius: TIP_H / 2,
        boxShadow: lensShadow,
      }
    : null;

  return (
    <div className="absolute inset-0 overflow-hidden rounded-[20px]">
      <Glass
        chroma={0.3}
        className="absolute inset-0"
        depth={9}
        domeDepth={10}
        edgeHighlight={0.3}
        glow={0.12}
        lens={
          <div style={frameStyle}>
            {ITEMS.map((it, i) => (
              <div
                data-glass-lens
                key={it.id}
                style={{
                  position: "absolute",
                  left: ITEM_X[i],
                  top: ROW_Y,
                  width: SIZE,
                  height: SIZE,
                  borderRadius: SIZE / 2,
                  boxShadow: lensShadow,
                }}
              />
            ))}
            {tipStyle ? <div data-glass-lens style={tipStyle} /> : null}
          </div>
        }
        tint={tint}
      >
        <ShowcaseGrid />
      </Glass>

      <div style={frameStyle}>
        {ITEMS.map((it, i) => (
          <button
            aria-label={it.label}
            className="absolute flex cursor-pointer items-center justify-center text-[#1d1d1f] outline-none"
            key={it.id}
            onFocus={() => setHovered(i)}
            onPointerEnter={() => setHovered(i)}
            style={{ left: ITEM_X[i], top: ROW_Y, width: SIZE, height: SIZE }}
            type="button"
          >
            <it.Icon className="size-5" />
          </button>
        ))}
        {tip ? (
          <div
            className="absolute flex items-center justify-center font-medium text-[#1d1d1f] text-[13px]"
            style={{
              left: tipCx - tipW / 2,
              top: ROW_Y - TIP_GAP - TIP_H,
              width: tipW,
              height: TIP_H,
            }}
          >
            {tip.label}
          </div>
        ) : null}
      </div>
    </div>
  );
}

export { GlassTooltipDemo };
```

## Source

#### `glass-tooltip.tsx`

```tsx
"use client";

import { Tooltip as TooltipPrimitive } from "@base-ui/react/tooltip";
import { GlassSurface } from "@/components/ui/glass-surface";
import { cn } from "@/lib/utils";

const GlassTooltipProvider = TooltipPrimitive.Provider;
const GlassTooltip = TooltipPrimitive.Root;
const GlassTooltipTrigger = TooltipPrimitive.Trigger;

interface GlassTooltipContentProps extends TooltipPrimitive.Popup.Props {
  align?: TooltipPrimitive.Positioner.Props["align"];
  side?: TooltipPrimitive.Positioner.Props["side"];
  sideOffset?: number;
  tint?: number;
  tintColor?: string;
}

function GlassTooltipContent({
  align = "center",
  side = "top",
  sideOffset = 8,
  tint = 0.6,
  tintColor,
  className,
  children,
  ...props
}: GlassTooltipContentProps) {
  return (
    <TooltipPrimitive.Portal>
      <TooltipPrimitive.Positioner
        align={align}
        className="z-50"
        side={side}
        sideOffset={sideOffset}
      >
        <TooltipPrimitive.Popup
          className={cn(
            "origin-[var(--transform-origin)] transition-[scale,opacity] duration-200 ease-[cubic-bezier(0.34,1.3,0.64,1)] data-[ending-style]:scale-90 data-[ending-style]:opacity-0 data-[ending-style]:duration-100 data-[starting-style]:scale-75",
            className
          )}
          {...props}
        >
          <GlassSurface
            blur={12}
            radius={999}
            tint={tint}
            tintColor={tintColor}
          >
            <span className="block whitespace-nowrap px-3.5 py-2 font-medium text-[#1d1d1f] text-[13px] leading-none dark:text-[#f5f5f7]">
              {children}
            </span>
          </GlassSurface>
        </TooltipPrimitive.Popup>
      </TooltipPrimitive.Positioner>
    </TooltipPrimitive.Portal>
  );
}

export {
  GlassTooltip,
  GlassTooltipContent,
  GlassTooltipProvider,
  GlassTooltipTrigger,
};
export type { GlassTooltipContentProps };
```