Glyph Map Card

Installation#

CLI

npx shadcn@latest add https://hantui-theta.vercel.app/r/glyph-map-card.json

Manual

1. Install the dependencies

   npmpnpmbunyarn

   npm install clsx lucide-react motion radix-ui tailwind-merge

2. Add the shared helpers

   Components use cn() from lib/utils.ts and the motion tokens below. See Installation if you have not set them up yet.

   lib/glyph/canvas-loop.ts

   /**
    * The render loop every glyph and dither canvas shares: sizes the canvas to its host at a capped
    * pixel ratio, runs only while the host is on screen, the tab is visible, nothing is paused and
    * the user hasn't asked for reduced motion, and otherwise keeps one up-to-date still frame.
    * Framework-free: start it in an effect and dispose it in the cleanup. Browser only.
    */
   
   export interface CanvasLoopFrame {
     /** Seconds since the previous frame (capped at 0.05), or 0 for a redraw without advancing. */
     dt: number;
     /** Seconds the loop has been running. */
     time: number;
     /** True under reduced motion: draw a calm, finished-looking frame. */
     still: boolean;
     /** Host size in CSS pixels. */
     width: number;
     height: number;
     /** Device pixel ratio of the canvas (capped). */
     dpr: number;
   }
   
   export interface CanvasLoopOptions {
     /** Element observed for size and visibility. */
     host: HTMLElement;
     /** Canvas sized to the host times the pixel ratio. */
     canvas: HTMLCanvasElement;
     /** Advance by `frame.dt` and draw. Called every animation frame while running, and with dt 0 after resizes and redraws. */
     render: (frame: CanvasLoopFrame) => void;
     /** Called after the canvas is resized, before it is redrawn. */
     resize?: (frame: CanvasLoopFrame) => void;
     /** Read before every frame; while it returns true the loop stops and the last frame stays. */
     isPaused?: () => boolean;
     /** Highest device pixel ratio used. @default 2 */
     maxDpr?: number;
     /** Margin around the viewport that still counts as on screen. @default "120px" */
     rootMargin?: string;
   }
   
   export interface CanvasLoop {
     /** Re-checks paused, visibility and reduced motion, and starts or stops the loop. Call it when props change. */
     wake(): void;
     /** Draws one frame without advancing (no-op while the loop is running, since the next frame will). */
     redraw(): void;
     /** Stops the loop and removes every observer and listener. */
     dispose(): void;
   }
   
   export function runCanvasLoop(options: CanvasLoopOptions): CanvasLoop {
     const { host, canvas, rootMargin = "120px" } = options;
     const reducedMotion = window.matchMedia("(prefers-reduced-motion: reduce)");
     let width = 0;
     let height = 0;
     let dpr = 1;
     let raf = 0;
     let last = 0;
     let time = 0;
     let inView = false;
     let disposed = false;
   
     const frame = (dt: number): CanvasLoopFrame => ({ dt, time, still: reducedMotion.matches, width, height, dpr });
     const shouldRun = () => !disposed && inView && !document.hidden && !reducedMotion.matches && !options.isPaused?.();
   
     const tick = (now: number) => {
       raf = 0;
       if (!shouldRun()) return;
       const dt = last ? Math.min(0.05, (now - last) / 1000) : 0;
       last = now;
       time += dt;
       options.render(frame(dt));
       raf = requestAnimationFrame(tick);
     };
   
     const wake = () => {
       if (disposed) return;
       if (shouldRun()) {
         if (!raf) {
           last = 0;
           raf = requestAnimationFrame(tick);
         }
         return;
       }
       if (raf) cancelAnimationFrame(raf);
       raf = 0;
     };
   
     const redraw = () => {
       if (!disposed && !raf && width > 0) options.render(frame(0));
     };
   
     const resize = () => {
       width = Math.max(1, host.clientWidth);
       height = Math.max(1, host.clientHeight);
       dpr = Math.min(window.devicePixelRatio || 1, options.maxDpr ?? 2);
       const w = Math.max(1, Math.round(width * dpr));
       const h = Math.max(1, Math.round(height * dpr));
       if (canvas.width !== w || canvas.height !== h) {
         canvas.width = w;
         canvas.height = h;
       }
       options.resize?.(frame(0));
       // Resizing clears the canvas, so repaint right away even while running.
       options.render(frame(0));
     };
   
     const resizeObserver = new ResizeObserver(resize);
     const intersection = new IntersectionObserver(
       ([entry]) => {
         inView = entry?.isIntersecting ?? true;
         wake();
       },
       { rootMargin },
     );
     const onVisibility = () => wake();
     const onMotionChange = () => {
       wake();
       redraw();
     };
   
     resize();
     resizeObserver.observe(host);
     intersection.observe(host);
     document.addEventListener("visibilitychange", onVisibility);
     reducedMotion.addEventListener("change", onMotionChange);
   
     return {
       wake,
       redraw,
       dispose() {
         disposed = true;
         if (raf) cancelAnimationFrame(raf);
         raf = 0;
         resizeObserver.disconnect();
         intersection.disconnect();
         document.removeEventListener("visibilitychange", onVisibility);
         reducedMotion.removeEventListener("change", onMotionChange);
       },
     };
   }

   Show all 138 lines

   lib/glyph/glyph-atlas.ts

   /**
    * Glyph sprite atlases: every glyph of a ramp is rendered once per color into one canvas, and
    * cells are blitted from it with `drawImage`. Drawing text per cell per frame (`fillText`) is far
    * slower, so glyph canvases never do it. Browser only.
    */
   
   export interface GlyphAtlasOptions {
     /** Glyphs to pre-render, e.g. `rampGlyphs("classic")`. Spaces are kept as empty sprites. */
     glyphs: readonly string[];
     /** One tint per color, as any color a canvas accepts. Resolve CSS variables first with `resolveCanvasColors`. */
     colors: readonly string[];
     /** Size of one square cell in CSS pixels. */
     cell: number;
     /** Device pixel ratio to render for, capped at 2. @default 1 */
     dpr?: number;
     /** Font stack. @default Geist Mono (`--font-geist-mono`), then system monospace */
     fontFamily?: string;
     /** Font weight. @default 500 */
     fontWeight?: number | string;
     /** Glyph size as a share of the cell. @default 0.8 */
     fontScale?: number;
     /** Largest scale a sprite will be drawn at, so enlarged glyphs stay sharp. @default 1 */
     maxScale?: number;
   }
   
   export interface GlyphAtlas {
     readonly canvas: HTMLCanvasElement;
     readonly glyphs: readonly string[];
     readonly colors: readonly string[];
     /** Cell size in CSS pixels. */
     readonly cell: number;
     /** Index of a glyph in the atlas, or -1. */
     index(glyph: string): number;
     /**
      * Blits a glyph in a color with its cell's top-left corner at (x, y), in the context's current
      * units (CSS pixels when the context is scaled by the device pixel ratio). `scale` grows it
      * around the cell center. Set `globalAlpha` on the context for faded glyphs.
      */
     draw(ctx: CanvasRenderingContext2D, glyph: number, color: number, x: number, y: number, scale?: number): void;
   }
   
   const FALLBACK_MONO = 'ui-monospace, SFMono-Regular, Menlo, Monaco, "Cascadia Mono", "Roboto Mono", monospace';
   const SHADES: Record<string, number> = { "░": 0.25, "▒": 0.5, "▓": 0.75, "█": 1 };
   const GUTTER = 1;
   const MAX_CACHED = 16;
   const cache = new Map<string, GlyphAtlas>();
   
   /** Geist Mono as set up by the site (`--font-geist-mono`), followed by system monospace fonts. */
   export function monoFontFamily(element: Element = document.documentElement): string {
     const geist = getComputedStyle(element).getPropertyValue("--font-geist-mono").trim();
     return geist ? `${geist}, ${FALLBACK_MONO}` : FALLBACK_MONO;
   }
   
   /**
    * Turns CSS colors a canvas can't parse (`var(--primary)`, `color-mix(…)`, `currentColor`) into
    * computed `rgb()` strings by styling a hidden probe inside `element`. Plain colors pass through.
    */
   export function resolveCanvasColors(colors: readonly string[], element: Element): string[] {
     let probe: HTMLSpanElement | null = null;
     const out = colors.map((color) => {
       if (!/var\(|color-mix\(|currentcolor/i.test(color)) return color;
       if (!probe) {
         probe = document.createElement("span");
         probe.style.display = "none";
         element.appendChild(probe);
       }
       probe.style.color = "";
       probe.style.color = color;
       return getComputedStyle(probe).color || color;
     });
     (probe as HTMLSpanElement | null)?.remove();
     return out;
   }
   
   const fontSpec = (options: GlyphAtlasOptions, size: number) =>
     `${options.fontWeight ?? 500} ${size}px ${options.fontFamily ?? FALLBACK_MONO}`;
   
   /** Resolves once the atlas font is loaded (or failed to load), so atlases built after it use the real face. */
   export async function loadGlyphFont(options: Pick<GlyphAtlasOptions, "glyphs" | "fontFamily" | "fontWeight">): Promise<void> {
     try {
       await document.fonts?.load(fontSpec({ ...options, colors: [], cell: 16 }, 16), options.glyphs.join("").replace(/\s/g, "") || "0");
     } catch {
       // A missing font falls back to the system monospace face.
     }
   }
   
   function createAtlas(options: GlyphAtlasOptions): GlyphAtlas {
     const { glyphs, colors, cell } = options;
     const dpr = Math.min(2, Math.max(1, options.dpr ?? 1));
     const sprite = Math.max(2, Math.ceil(cell * dpr * Math.max(1, options.maxScale ?? 1)));
     const stride = sprite + GUTTER * 2;
     const canvas = document.createElement("canvas");
     canvas.width = Math.max(1, glyphs.length * stride);
     canvas.height = Math.max(1, colors.length * stride);
     const ctx = canvas.getContext("2d");
     if (ctx) {
       ctx.font = fontSpec(options, Math.round(sprite * (options.fontScale ?? 0.8)));
       ctx.textAlign = "center";
       ctx.textBaseline = "middle";
       colors.forEach((color, row) => {
         ctx.fillStyle = color;
         glyphs.forEach((glyph, col) => {
           const x = col * stride + GUTTER;
           const y = row * stride + GUTTER;
           const shade = SHADES[glyph];
           if (shade === 1) ctx.fillRect(x, y, sprite, sprite);
           else if (shade) {
             // Shade blocks as crisp dot screens rather than whatever the font draws.
             const dots = 4;
             const size = sprite / dots;
             for (let dy = 0; dy < dots; dy++) {
               for (let dx = 0; dx < dots; dx++) {
                 const on = shade === 0.5 ? (dx + dy) % 2 === 0 : shade === 0.25 ? dx % 2 === 0 && dy % 2 === 0 : !(dx % 2 === 1 && dy % 2 === 1);
                 if (on) ctx.fillRect(x + dx * size, y + dy * size, Math.ceil(size), Math.ceil(size));
               }
             }
           } else if (glyph.trim()) ctx.fillText(glyph, x + sprite / 2, y + sprite / 2 + sprite * 0.04);
         });
       });
     }
     const lookup = new Map(glyphs.map((g, i) => [g, i]));
     return {
       canvas,
       glyphs,
       colors,
       cell,
       index: (glyph) => lookup.get(glyph) ?? -1,
       draw(target, glyph, color, x, y, scale = 1) {
         if (glyph < 0 || color < 0 || glyph >= glyphs.length || color >= colors.length) return;
         const size = cell * scale;
         const offset = (size - cell) / 2;
         target.drawImage(canvas, glyph * stride + GUTTER, color * stride + GUTTER, sprite, sprite, x - offset, y - offset, size, size);
       },
     };
   }
   
   /**
    * Returns a glyph atlas for these options, building it on first use. Atlases are shared between
    * components with identical options. Once the font has loaded, the next call builds a fresh atlas
    * with the real face instead of reusing one drawn with the fallback.
    */
   export function getGlyphAtlas(options: GlyphAtlasOptions): GlyphAtlas {
     const dpr = Math.min(2, Math.max(1, options.dpr ?? 1));
     const fontReady = typeof document === "undefined" || !document.fonts ? true : document.fonts.check(fontSpec(options, 16));
     const key = [options.glyphs.join(""), options.colors.join("|"), options.cell, dpr, options.fontFamily, options.fontWeight, options.fontScale, options.maxScale, fontReady].join("§");
     const hit = cache.get(key);
     if (hit) {
       cache.delete(key);
       cache.set(key, hit);
       return hit;
     }
     const atlas = createAtlas({ ...options, dpr });
     cache.set(key, atlas);
     while (cache.size > MAX_CACHED) cache.delete(cache.keys().next().value as string);
     return atlas;
   }

   Show all 156 lines

   lib/glyph/ramp.ts

   /**
    * Glyph ramps: characters ordered from sparse (light, index 0) to dense (dark, last index).
    * Index 0 is usually a space, so the brightest areas of an image stay empty.
    */
   export const GLYPH_RAMPS = {
     /** The classic ASCII ramp. */
     classic: " .:-=+*#%@",
     /** Binary digits only: empty, then 1, then 0 for the darkest areas. */
     binary: " 10",
     /** Shade blocks. */
     blocks: " ░▒▓█",
     /** Dots that grow. */
     dots: " ·•●",
   } as const;
   
   export type GlyphRampName = keyof typeof GLYPH_RAMPS;
   
   /** A built-in ramp name or your own string of glyphs, sparse to dense. */
   export type GlyphRamp = GlyphRampName | (string & {});
   
   /** The glyphs of a ramp as an array (handles characters outside the BMP). Unknown names are used as literal glyphs. */
   export function rampGlyphs(ramp: GlyphRamp): string[] {
     const source = ramp in GLYPH_RAMPS ? GLYPH_RAMPS[ramp as GlyphRampName] : ramp;
     const glyphs = Array.from(source);
     return glyphs.length ? glyphs : Array.from(GLYPH_RAMPS.classic);
   }
   
   /**
    * Index of the glyph for a luminance (0 = black, 1 = white) in a ramp of `count` glyphs.
    * Dark values pick dense glyphs (high indices), bright values sparse ones.
    */
   export function glyphIndex(luminance: number, count: number): number {
     const darkness = 1 - Math.min(1, Math.max(0, luminance));
     return Math.min(count - 1, Math.floor(darkness * count));
   }
   
   /** The glyph for a luminance (0 = black, 1 = white): dense glyphs for dark areas, sparse ones for bright areas. */
   export function pickGlyph(luminance: number, ramp: GlyphRamp = "classic"): string {
     const glyphs = rampGlyphs(ramp);
     return glyphs[glyphIndex(luminance, glyphs.length)];
   }

   Show all 41 lines

   lib/glyph/sample-image.ts

   /**
    * Image sampling for glyph art: an image is downsampled so each glyph cell gets one pixel, and
    * each cell's luminance and alpha are read back. Browser only.
    */
   
   /** One value per glyph cell, row by row. */
   export interface GlyphSample {
     cols: number;
     rows: number;
     /** Perceived brightness per cell, 0 (black) to 1 (white). */
     luminance: Float32Array;
     /** Opacity per cell, 0 (transparent, or outside the image under `contain`) to 1. */
     alpha: Float32Array;
   }
   
   /** How the image maps onto the grid: crop to fill it, fit inside it, or stretch. */
   export type SampleFit = "cover" | "contain" | "fill";
   
   const MAX_CACHED = 48;
   const images = new Map<string, Promise<HTMLImageElement>>();
   const samples = new Map<string, Promise<GlyphSample>>();
   
   /** Loads an image once per `src` and resolves when it can be drawn. */
   export function loadImage(src: string): Promise<HTMLImageElement> {
     let pending = images.get(src);
     if (!pending) {
       pending = new Promise<HTMLImageElement>((resolve, reject) => {
         const image = new Image();
         image.decoding = "async";
         // Same-origin images are unaffected; cross-origin ones must send CORS headers to be readable.
         image.crossOrigin = "anonymous";
         image.onload = () => resolve(image);
         image.onerror = () => reject(new Error(`Could not load image: ${src}`));
         image.src = src;
       });
       pending.catch(() => images.delete(src));
       images.set(src, pending);
     }
     return pending;
   }
   
   function makeCanvas(width: number, height: number) {
     const canvas = document.createElement("canvas");
     canvas.width = width;
     canvas.height = height;
     const ctx = canvas.getContext("2d", { willReadFrequently: true });
     if (!ctx) throw new Error("2D canvas is unavailable");
     ctx.imageSmoothingEnabled = true;
     ctx.imageSmoothingQuality = "high";
     return { canvas, ctx };
   }
   
   /**
    * Samples an already loaded source (image, canvas, video frame) into a `cols × rows` grid.
    * Large sources are halved step by step first, so every cell averages its whole area.
    */
   export function sampleSource(
     source: CanvasImageSource,
     sourceWidth: number,
     sourceHeight: number,
     cols: number,
     rows: number,
     fit: SampleFit = "cover",
   ): GlyphSample {
     const width = Math.max(1, Math.round(cols));
     const height = Math.max(1, Math.round(rows));
     const sourceAspect = sourceWidth / Math.max(1, sourceHeight);
     const gridAspect = width / height;
   
     // Source crop (cover) and destination rect (contain) in grid cells.
     let sx = 0;
     let sy = 0;
     let sw = sourceWidth;
     let sh = sourceHeight;
     let dx = 0;
     let dy = 0;
     let dw = width;
     let dh = height;
     if (fit === "cover") {
       if (sourceAspect > gridAspect) {
         sw = sourceHeight * gridAspect;
         sx = (sourceWidth - sw) / 2;
       } else {
         sh = sourceWidth / gridAspect;
         sy = (sourceHeight - sh) / 2;
       }
     } else if (fit === "contain") {
       if (sourceAspect > gridAspect) {
         dh = Math.max(1, Math.round(width / sourceAspect));
         dy = Math.floor((height - dh) / 2);
       } else {
         dw = Math.max(1, Math.round(height * sourceAspect));
         dx = Math.floor((width - dw) / 2);
       }
     }
   
     let current: CanvasImageSource = source;
     while (sw > dw * 2 && sh > dh * 2) {
       const nw = Math.max(dw, Math.ceil(sw / 2));
       const nh = Math.max(dh, Math.ceil(sh / 2));
       const step = makeCanvas(nw, nh);
       step.ctx.drawImage(current, sx, sy, sw, sh, 0, 0, nw, nh);
       current = step.canvas;
       sx = 0;
       sy = 0;
       sw = nw;
       sh = nh;
     }
   
     const out = makeCanvas(width, height);
     out.ctx.drawImage(current, sx, sy, sw, sh, dx, dy, dw, dh);
     const { data } = out.ctx.getImageData(0, 0, width, height);
     const luminance = new Float32Array(width * height);
     const alpha = new Float32Array(width * height);
     for (let i = 0; i < width * height; i++) {
       const o = i * 4;
       luminance[i] = (0.299 * data[o] + 0.587 * data[o + 1] + 0.114 * data[o + 2]) / 255;
       alpha[i] = data[o + 3] / 255;
     }
     return { cols: width, rows: height, luminance, alpha };
   }
   
   /**
    * Loads `src` and samples it into a `cols × rows` grid (one pixel per glyph cell). Results are
    * cached per source and grid size, so cards that share an image and cell size sample it once.
    */
   export function sampleImage(src: string, cols: number, rows: number, fit: SampleFit = "cover"): Promise<GlyphSample> {
     const key = `${src}|${Math.round(cols)}x${Math.round(rows)}|${fit}`;
     const cached = samples.get(key);
     if (cached) {
       // Refresh its place in the LRU order.
       samples.delete(key);
       samples.set(key, cached);
       return cached;
     }
     const pending = loadImage(src).then((image) => sampleSource(image, image.naturalWidth, image.naturalHeight, cols, rows, fit));
     pending.catch(() => samples.delete(key));
     samples.set(key, pending);
     while (samples.size > MAX_CACHED) samples.delete(samples.keys().next().value as string);
     return pending;
   }

   Show all 141 lines

   lib/motion.ts

   import type { Transition, Variants } from "motion/react";
   
   /** Durations in seconds. */
   export const duration = {
     instant: 0.1,
     quick: 0.18,
     base: 0.28,
     slow: 0.45,
   } as const;
   
   /** Cubic-bezier curves. */
   export const ease = {
     /** Entering, UI response. */
     out: [0.22, 1, 0.36, 1],
     /** Moving on screen. */
     inOut: [0.65, 0, 0.35, 1],
     /** Sheets and the mobile menu. */
     drawer: [0.32, 0.72, 0, 1],
   } as const;
   
   /** Everyday UI: presses, icon swaps, popovers and modals. Exits run at `exitFactor` of the enter. */
   export const ui = {
     press: { scale: 0.96, duration: 0.12 },
     icon: { type: "spring", duration: 0.3, bounce: 0 },
     popover: { duration: 0.18, ease: ease.out },
     modal: { duration: 0.24, ease: ease.out },
     exitFactor: 0.6,
   } as const;
   
   /** Once-per-visit motion on the landing page: hero letters, the reel and the afterimage. */
   export const kinetic = {
     heroLetter: { duration: 0.6, ease: ease.out },
     /** Delay per letter, eased so the wave slows toward the end. */
     heroStep: 0.035,
     reelSwap: { type: "spring", duration: 0.5, bounce: 0.1 },
     /** Two afterimages: lag in seconds and opacity of each. */
     ghost: { lag: [0.04, 0.09], opacity: [0.14, 0.06] },
   } as const;
   
   /** Spring presets. */
   export const spring = {
     snappy: { type: "spring", stiffness: 500, damping: 30 },
     smooth: { type: "spring", stiffness: 260, damping: 26 },
     bouncy: { type: "spring", stiffness: 300, damping: 15 },
   } as const satisfies Record<string, Transition>;
   
   /** Stagger between siblings, in seconds (0.03–0.06). */
   export const stagger = {
     tight: 0.03,
     base: 0.045,
     loose: 0.06,
   } as const;
   
   /** Blur + fade + y-offset. Falls back to a plain fade under reduced motion. */
   export function enterVariants(reduceMotion?: boolean | null, y = 8): Variants {
     if (reduceMotion) {
       return {
         hidden: { opacity: 0 },
         visible: { opacity: 1, transition: { duration: duration.base } },
         exit: { opacity: 0, transition: { duration: duration.quick } },
       };
     }
     return {
       hidden: { opacity: 0, y, filter: "blur(4px)" },
       visible: {
         opacity: 1,
         y: 0,
         filter: "blur(0px)",
         transition: { duration: duration.base, ease: ease.out },
       },
       exit: {
         opacity: 0,
         y: -y / 2,
         filter: "blur(4px)",
         transition: { duration: duration.quick, ease: ease.out },
       },
     };
   }
   
   /** Scale 0.96 → 1 for popovers, menus and dialogs. */
   export function overlayVariants(reduceMotion?: boolean | null): Variants {
     if (reduceMotion) {
       return {
         hidden: { opacity: 0 },
         visible: { opacity: 1, transition: { duration: duration.quick } },
         exit: { opacity: 0, transition: { duration: duration.instant } },
       };
     }
     return {
       hidden: { opacity: 0, scale: 0.96, filter: "blur(2px)" },
       visible: {
         opacity: 1,
         scale: 1,
         filter: "blur(0px)",
         transition: { duration: duration.quick, ease: ease.out },
       },
       exit: {
         opacity: 0,
         scale: 0.96,
         filter: "blur(2px)",
         transition: { duration: duration.instant + 0.02, ease: ease.out },
       },
     };
   }
   
   /** Parent variants that stagger their children in. */
   export function staggerVariants(gap: number = stagger.base, delayChildren = 0): Variants {
     return {
       hidden: {},
       visible: { transition: { staggerChildren: gap, delayChildren } },
       exit: { transition: { staggerChildren: gap / 2, staggerDirection: -1 } },
     };
   }

   Show all 113 lines

3. Copy the source

   components/ui/glyph-map-card/glyph-map-card.tsx

   "use client";
   
   import { useEffect, useId, useRef, useState, type ComponentProps, type CSSProperties } from "react";
   import { AnimatePresence, motion, useReducedMotion } from "motion/react";
   import { Dialog } from "radix-ui";
   import { Check, MapPin, Maximize2, Plus, X } from "lucide-react";
   import { cn } from "@/lib/utils";
   import { duration, ease } from "@/lib/motion";
   import { runCanvasLoop, type CanvasLoop } from "@/lib/glyph/canvas-loop";
   import { getGlyphAtlas, loadGlyphFont, monoFontFamily, type GlyphAtlas } from "@/lib/glyph/glyph-atlas";
   import { rampGlyphs } from "@/lib/glyph/ramp";
   import { sampleImage, sampleSource, type GlyphSample } from "@/lib/glyph/sample-image";
   
   export type GlyphMapTone = "green" | "indigo" | "ember" | "mono";
   export type GlyphMapRamp = "classic" | "binary" | "blocks";
   
   export interface GlyphMapWatcher {
     /** Used for the avatar's alt text and initials. */
     name: string;
     /** Avatar image. Without it, initials are shown. */
     image?: string;
   }
   
   export interface GlyphMapCardProps extends Omit<ComponentProps<"div">, "title" | "children"> {
     /** Image redrawn as glyphs (any size; it is cropped to fill). Without it, a built-in sphere study is used. */
     image?: string;
     /** Describes the image for screen readers; also the default caption in the expanded view. */
     imageAlt?: string;
     /** Card title, set in a serif display face. @default "Quiet Orbit" */
     title?: string;
     /** Short description under the title. */
     description?: string;
     /** Small label at the top of the colored panel. @default "Stock Card" */
     label?: string;
     /** Place shown with a pin icon. */
     location?: string;
     /** Avatars of people watching (up to 3 are shown) and the total count. */
     watchers?: { people: GlyphMapWatcher[]; total: number };
     /** Color of the glyphs and the panel. @default "indigo" */
     tone?: GlyphMapTone;
     /** Glyph ramp: classic ASCII, binary digits or shade blocks. @default "classic" */
     ramp?: GlyphMapRamp;
     /** Glyph cell size in px. @default 9 */
     cell?: number;
     /** Controlled "added" state of the Add card button. */
     added?: boolean;
     /** Initial "added" state when uncontrolled. @default false */
     defaultAdded?: boolean;
     /** Called with the new state when Add card is pressed. */
     onAdd?: (added: boolean) => void;
     /** Called when the expanded view opens or closes. */
     onExpand?: (expanded: boolean) => void;
     /** Caption under the glyph map in the expanded view. @default imageAlt */
     caption?: string;
   }
   
   interface ToneColors {
     ground: string;
     ink: string;
     soft: string;
     hot: string;
     panel: string;
     panelFg: string;
     panelMuted: string;
   }
   
   const TONES: Record<GlyphMapTone, ToneColors> = {
     green: { ground: "#eaf5ee", ink: "#17663f", soft: "#86bf9c", hot: "#1f9d55", panel: "#17663f", panelFg: "#f2fbf5", panelMuted: "#cfe9da" },
     indigo: { ground: "#edf0ff", ink: "#2b3fcf", soft: "#9ba7f3", hot: "#4d68ff", panel: "#2b3fcf", panelFg: "#f5f6ff", panelMuted: "#d3d9ff" },
     ember: { ground: "#fff1e8", ink: "#a3320a", soft: "#f0a47e", hot: "#ee6316", panel: "#a3320a", panelFg: "#fff7f2", panelMuted: "#ffd9c4" },
     mono: { ground: "#f4f4f5", ink: "#18181b", soft: "#a1a1aa", hot: "#52525b", panel: "#18181b", panelFg: "#fafafa", panelMuted: "#d4d4d8" },
   };
   
   const SERIF = "[font-family:var(--font-geist-serif),ui-serif,Georgia,'Times_New_Roman',serif]";
   const MORPH = { type: "spring", stiffness: 300, damping: 32 } as const;
   
   /* ------------------------------------------------------------------ default art */
   
   let defaultArt: HTMLCanvasElement | null = null;
   
   /** A shaded sphere with a ring and a moon, drawn once: the image used when none is given. */
   function getDefaultArt() {
     if (defaultArt) return defaultArt;
     const canvas = document.createElement("canvas");
     canvas.width = 500;
     canvas.height = 400;
     const ctx = canvas.getContext("2d");
     if (ctx) {
       ctx.fillStyle = "#ffffff";
       ctx.fillRect(0, 0, 500, 400);
       const ring = (front: boolean) => {
         ctx.save();
         ctx.translate(250, 205);
         ctx.rotate(-0.32);
         ctx.beginPath();
         ctx.ellipse(0, 0, 205, 52, 0, front ? 0 : Math.PI, front ? Math.PI : Math.PI * 2);
         ctx.lineWidth = 22;
         ctx.strokeStyle = front ? "#3a3a3a" : "#8a8a8a";
         ctx.stroke();
         ctx.restore();
       };
       ring(false);
       // Mostly mid to dark so the whole sphere fills with glyphs, lighter toward the top left.
       const sphere = ctx.createRadialGradient(205, 160, 10, 240, 200, 150);
       sphere.addColorStop(0, "#9c9c9c");
       sphere.addColorStop(0.5, "#4c4c4c");
       sphere.addColorStop(1, "#0d0d0d");
       ctx.fillStyle = sphere;
       ctx.beginPath();
       ctx.arc(250, 205, 122, 0, Math.PI * 2);
       ctx.fill();
       ring(true);
       const moon = ctx.createRadialGradient(410, 80, 2, 420, 90, 34);
       moon.addColorStop(0, "#d8d8d8");
       moon.addColorStop(1, "#262626");
       ctx.fillStyle = moon;
       ctx.beginPath();
       ctx.arc(420, 90, 30, 0, Math.PI * 2);
       ctx.fill();
       ctx.fillStyle = "#555555";
       for (const [x, y, r] of [[60, 70, 4], [110, 320, 3], [440, 300, 5], [80, 220, 2.5], [330, 40, 3]]) {
         ctx.beginPath();
         ctx.arc(x, y, r, 0, Math.PI * 2);
         ctx.fill();
       }
     }
     defaultArt = canvas;
     return canvas;
   }
   
   /* ------------------------------------------------------------------ glyph field */
   
   const hash = (n: number) => {
     let h = Math.imul(n | 0, 2654435761) ^ 0x9e3779b9;
     h = Math.imul(h ^ (h >>> 15), 2246822507);
     return ((h ^ (h >>> 13)) >>> 0) / 4294967296;
   };
   
   interface GlyphFieldProps {
     image?: string;
     colors: ToneColors;
     ramp: GlyphMapRamp;
     cell: number;
     className?: string;
     style?: CSSProperties;
   }
   
   /**
    * The live glyph map: one canvas, glyphs blitted from a shared atlas. Cells re-roll toward
    * neighboring densities over time; near the pointer they heat up, scramble, grow and push
    * outward, then cool and settle back.
    */
   function GlyphField({ image, colors, ramp, cell, className, style }: GlyphFieldProps) {
     const hostRef = useRef<HTMLDivElement>(null);
     const canvasRef = useRef<HTMLCanvasElement>(null);
     const { ink, soft, hot } = colors;
   
     useEffect(() => {
       const host = hostRef.current;
       const canvas = canvasRef.current;
       const ctx = canvas?.getContext("2d");
       if (!host || !canvas || !ctx) return;
   
       const glyphs = rampGlyphs(ramp);
       const count = glyphs.length;
       const fontFamily = monoFontFamily(host);
       let atlas: GlyphAtlas | null = null;
       let sample: GlyphSample | null = null;
       let cols = 0;
       let rows = 0;
       let ox = 0;
       let oy = 0;
       let dpr = 1;
       let base = new Uint8Array(0);
       let current = new Uint8Array(0);
       let heat = new Float32Array(0);
       let timer = new Float32Array(0);
       let alpha = new Float32Array(0);
       let lastDraw = -1;
       let rolls = 0;
       let disposed = false;
       let loop: CanvasLoop | null = null;
       const pointer = { x: 0, y: 0, tx: 0, ty: 0, strength: 0, inside: false };
   
       const buildAtlas = () => {
         atlas = getGlyphAtlas({ glyphs, colors: [ink, soft, hot], cell, dpr, fontFamily, fontWeight: 500, fontScale: 0.92, maxScale: 1.6 });
       };
   
       /** Darkness per cell from the sample, with a little contrast and a floor so pale ground stays empty. */
       const applySample = (next: GlyphSample) => {
         if (next.cols !== cols || next.rows !== rows) return;
         sample = next;
         for (let i = 0; i < cols * rows; i++) {
           const dark = Math.min(1, Math.max(0, ((1 - next.luminance[i] - 0.5) * 1.15 + 0.5 - 0.1) / 0.9));
           const level = next.alpha[i] < 0.05 ? 0 : Math.min(count - 1, Math.floor(dark * count));
           base[i] = level;
           current[i] = level;
           alpha[i] = next.alpha[i];
           timer[i] = 0.5 + hash(i * 7 + 3) * 4;
         }
         lastDraw = -1;
         // During the first resize the loop isn't assigned yet; it renders right after anyway.
         loop?.redraw();
         canvas.style.opacity = "1";
       };
   
       const resample = () => {
         if (!cols || !rows) return;
         if (!image) return applySample(sampleSource(getDefaultArt(), 500, 400, cols, rows, "cover"));
         const want = { cols, rows };
         sampleImage(image, cols, rows, "cover")
           .then((next) => {
             if (!disposed && want.cols === cols && want.rows === rows) applySample(next);
           })
           .catch(() => {
             // An image that fails to load leaves the tinted ground on its own.
           });
       };
   
       const reroll = (i: number) => {
         rolls++;
         const b = base[i];
         const r = hash(i * 131 + rolls * 977);
         if (heat[i] > 0.3) {
           // Scrambling: any non-empty glyph.
           current[i] = 1 + Math.floor(r * (count - 1));
           return;
         }
         if (b === 0) {
           // Pale cells mostly stay empty, with the odd faint sparkle (rarer when the lightest glyph is heavy).
           current[i] = r < (count > 3 ? 0.035 : 0.012) ? 1 : 0;
           return;
         }
         // Drift to a neighboring density, leaning back toward the true one.
         current[i] = r < 0.55 ? b : Math.max(1, Math.min(count - 1, b + (r < 0.78 ? -1 : 1)));
       };
   
       const draw = () => {
         ctx.setTransform(1, 0, 0, 1, 0, 0);
         ctx.clearRect(0, 0, canvas.width, canvas.height);
         if (!atlas || !sample) return;
         ctx.setTransform(dpr, 0, 0, dpr, 0, 0);
         ctx.imageSmoothingEnabled = true;
         const radius = Math.max(56, cell * 7);
         let faded = false;
         for (let y = 0; y < rows; y++) {
           for (let x = 0; x < cols; x++) {
             const i = y * cols + x;
             const g = current[i];
             if (g === 0) continue;
             const h = heat[i];
             let px = ox + x * cell;
             let py = oy + y * cell;
             if (h > 0.01) {
               const dx = px + cell / 2 - pointer.x;
               const dy = py + cell / 2 - pointer.y;
               const d = Math.hypot(dx, dy) || 1;
               const push = h * cell * 1.9 * Math.min(1, d / (radius * 0.3));
               px += (dx / d) * push;
               py += (dy / d) * push;
             }
             const a = alpha[i];
             if (a < 0.98) {
               ctx.globalAlpha = a;
               faded = true;
             } else if (faded) {
               ctx.globalAlpha = 1;
               faded = false;
             }
             const color = h > 0.45 ? 2 : g >= count / 2 ? 0 : 1;
             atlas.draw(ctx, g, color, px, py, 1 + h * 0.55);
           }
         }
         ctx.globalAlpha = 1;
       };
   
       loop = runCanvasLoop({
         host,
         canvas,
         resize: (frame) => {
           dpr = frame.dpr;
           buildAtlas();
           const nextCols = Math.max(1, Math.floor(frame.width / cell));
           const nextRows = Math.max(1, Math.floor(frame.height / cell));
           ox = (frame.width - nextCols * cell) / 2;
           oy = (frame.height - nextRows * cell) / 2;
           if (nextCols !== cols || nextRows !== rows) {
             cols = nextCols;
             rows = nextRows;
             const n = cols * rows;
             base = new Uint8Array(n);
             current = new Uint8Array(n);
             heat = new Float32Array(n);
             timer = new Float32Array(n);
             alpha = new Float32Array(n);
             sample = null;
             resample();
           }
         },
         render: ({ dt, time, still }) => {
           if (still || !sample) {
             // Reduced motion (or nothing to animate yet): the true glyphs, still.
             if (sample) {
               current.set(base);
               heat.fill(0);
             }
             draw();
             return;
           }
           const k = 1 - Math.exp(-dt * 10);
           pointer.x += (pointer.tx - pointer.x) * k;
           pointer.y += (pointer.ty - pointer.y) * k;
           pointer.strength += ((pointer.inside ? 1 : 0) - pointer.strength) * (1 - Math.exp(-dt * (pointer.inside ? 8 : 2.5)));
           const radius = Math.max(56, cell * 7);
           const cool = Math.exp(-dt * 2.2);
           let hottest = 0;
           for (let y = 0; y < rows; y++) {
             for (let x = 0; x < cols; x++) {
               const i = y * cols + x;
               let target = 0;
               if (pointer.strength > 0.01) {
                 const d = Math.hypot(ox + x * cell + cell / 2 - pointer.x, oy + y * cell + cell / 2 - pointer.y);
                 if (d < radius) target = pointer.strength * (1 - d / radius) ** 2;
               }
               heat[i] = target > heat[i] ? heat[i] + (target - heat[i]) * Math.min(1, dt * 14) : heat[i] * cool;
               if (heat[i] < 0.002) heat[i] = 0;
               hottest = Math.max(hottest, heat[i]);
               timer[i] -= dt * (1 + heat[i] * 40);
               if (timer[i] <= 0) {
                 reroll(i);
                 timer[i] = heat[i] > 0.3 ? 0.04 + hash(i + rolls) * 0.08 : 1.4 + hash(i * 3 + rolls) * 3.6;
               }
             }
           }
           // Idle shimmer only needs ~16 fps; the pointer gets every frame.
           if (hottest < 0.01 && lastDraw >= 0 && time - lastDraw < 1 / 16) return;
           lastDraw = time;
           draw();
         },
       });
   
       const local = (event: PointerEvent) => {
         const rect = host.getBoundingClientRect();
         // Divide by the rendered scale so pointer math holds inside scaled (animating) parents.
         const sx = rect.width / (host.clientWidth || 1) || 1;
         const sy = rect.height / (host.clientHeight || 1) || 1;
         return { x: (event.clientX - rect.left) / sx, y: (event.clientY - rect.top) / sy };
       };
       const onMove = (event: PointerEvent) => {
         const p = local(event);
         if (!pointer.inside && pointer.strength < 0.05) {
           pointer.x = p.x;
           pointer.y = p.y;
         }
         pointer.tx = p.x;
         pointer.ty = p.y;
         pointer.inside = true;
         loop?.wake();
       };
       const onLeave = () => {
         pointer.inside = false;
       };
       host.addEventListener("pointermove", onMove);
       host.addEventListener("pointerdown", onMove);
       host.addEventListener("pointerleave", onLeave);
       host.addEventListener("pointercancel", onLeave);
   
       // Rebuild the atlas with Geist Mono once it has loaded.
       loadGlyphFont({ glyphs, fontFamily }).then(() => {
         if (disposed) return;
         buildAtlas();
         lastDraw = -1;
         loop?.redraw();
       });
   
       return () => {
         disposed = true;
         loop?.dispose();
         host.removeEventListener("pointermove", onMove);
         host.removeEventListener("pointerdown", onMove);
         host.removeEventListener("pointerleave", onLeave);
         host.removeEventListener("pointercancel", onLeave);
       };
     }, [image, ramp, cell, ink, soft, hot]);
   
     return (
       <div ref={hostRef} className={cn("relative overflow-hidden", className)} style={{ background: colors.ground, ...style }}>
         <canvas ref={canvasRef} aria-hidden="true" className="absolute inset-0 size-full opacity-0 transition-opacity duration-500" />
       </div>
     );
   }
   
   /* ------------------------------------------------------------------ pieces */
   
   const initials = (name: string) =>
     name
       .split(/\s+/)
       .map((w) => w[0])
       .slice(0, 2)
       .join("")
       .toUpperCase();
   
   function Watchers({ watchers, colors }: { watchers: NonNullable<GlyphMapCardProps["watchers"]>; colors: ToneColors }) {
     const shown = watchers.people.slice(0, 3);
     const more = Math.max(0, watchers.total - shown.length);
     return (
       <div className="flex min-w-0 items-center gap-2.5">
         <div className="flex shrink-0 -space-x-2">
           {shown.map((person) =>
             person.image ? (
               // eslint-disable-next-line @next/next/no-img-element -- plain img keeps the component framework-agnostic
               <img
                 key={person.name}
                 src={person.image}
                 alt={person.name}
                 className="size-6 rounded-full object-cover ring-2"
                 style={{ ["--tw-ring-color" as string]: colors.panel }}
               />
             ) : (
               <span
                 key={person.name}
                 role="img"
                 aria-label={person.name}
                 className="flex size-6 items-center justify-center rounded-full text-[9px] font-semibold ring-2"
                 style={{ background: colors.panelMuted, color: colors.panel, ["--tw-ring-color" as string]: colors.panel }}
               >
                 {initials(person.name)}
               </span>
             ),
           )}
         </div>
         <p className="truncate text-[12.5px]" style={{ color: colors.panelMuted }}>
           {more > 0 ? (
             <>
               +{more}
               {/* The long form only where it fits beside the Expand button. */}
               <span className="hidden @[21.75rem]/card:inline"> more are</span> watching
             </>
           ) : (
             `${watchers.total} watching`
           )}
         </p>
       </div>
     );
   }
   
   function AddButton({ added, onToggle, colors, className }: { added: boolean; onToggle: () => void; colors: ToneColors; className?: string }) {
     const reduceMotion = useReducedMotion();
     return (
       <button
         type="button"
         aria-pressed={added}
         onClick={onToggle}
         className={cn(
           "inline-flex h-8 shrink-0 cursor-pointer items-center gap-1.5 rounded-full px-3 text-[12.5px] font-medium outline-none transition-[transform,background-color] active:scale-[0.97] focus-visible:ring-2 focus-visible:ring-white/80 focus-visible:ring-offset-2",
           className,
         )}
         style={{ background: colors.panelFg, color: colors.panel, ["--tw-ring-offset-color" as string]: colors.panel }}
       >
         <span className="relative inline-flex size-3.5 items-center justify-center" aria-hidden="true">
           <AnimatePresence initial={false} mode="popLayout">
             <motion.span
               key={added ? "check" : "plus"}
               initial={reduceMotion ? { opacity: 0 } : { opacity: 0, scale: 0.4, rotate: added ? -90 : 90 }}
               animate={{ opacity: 1, scale: 1, rotate: 0 }}
               exit={reduceMotion ? { opacity: 0 } : { opacity: 0, scale: 0.4, rotate: added ? 90 : -90 }}
               transition={{ duration: duration.quick, ease: ease.out }}
               className="absolute inset-0 flex items-center justify-center"
             >
               {added ? <Check className="size-3.5" strokeWidth={2.5} /> : <Plus className="size-3.5" strokeWidth={2.5} />}
             </motion.span>
           </AnimatePresence>
         </span>
         {added ? "Added" : "Add card"}
       </button>
     );
   }
   
   /* ------------------------------------------------------------------ card */
   
   /**
    * An image redrawn as a living glyph map in a rounded card: glyphs gently re-roll, and near the
    * pointer they scramble, grow and push outward before settling. Below sits a colored panel with a
    * label, an Add card toggle, a serif title, description, location, watchers and an Expand button
    * that opens a larger view.
    */
   export function GlyphMapCard({
     image,
     imageAlt,
     title = "Quiet Orbit",
     description = "A shaded sphere and its ring, redrawn in glyphs that shift as you move.",
     label = "Stock Card",
     location,
     watchers,
     tone = "indigo",
     ramp = "classic",
     cell = 9,
     added,
     defaultAdded = false,
     onAdd,
     onExpand,
     caption,
     className,
     style,
     ...props
   }: GlyphMapCardProps) {
     const reduceMotion = useReducedMotion();
     const id = useId();
     const colors = TONES[tone] ?? TONES.indigo;
     const [addedState, setAddedState] = useState(defaultAdded);
     const isAdded = added ?? addedState;
     const [open, setOpen] = useState(false);
     const [spacer, setSpacer] = useState(0);
     const cardRef = useRef<HTMLDivElement>(null);
     const expandRef = useRef<HTMLButtonElement>(null);
     const morph = reduceMotion ? { duration: 0 } : MORPH;
     const alt = imageAlt ?? (image ? `${title}, drawn in glyphs` : "A ringed sphere and a small moon, drawn in glyphs");
   
     const toggleAdd = () => {
       const next = !isAdded;
       if (added === undefined) setAddedState(next);
       onAdd?.(next);
     };
   
     const setExpanded = (next: boolean) => {
       if (next) setSpacer(cardRef.current?.offsetHeight ?? 0);
       setOpen(next);
       onExpand?.(next);
     };
   
     const panelHead = (
       <div className="flex items-center justify-between gap-3">
         <span
           className="inline-flex h-6 items-center rounded-full px-2.5 font-mono text-[10.5px] tracking-[0.08em] uppercase"
           style={{ background: "rgb(255 255 255 / 0.14)", color: colors.panelFg }}
         >
           {label}
         </span>
         <AddButton added={isAdded} onToggle={toggleAdd} colors={colors} />
       </div>
     );
   
     const locationRow = location ? (
       <p className="flex items-center gap-1.5 text-[12.5px]" style={{ color: colors.panelMuted }}>
         <MapPin className="size-3.5 shrink-0" aria-hidden="true" />
         <span className="truncate">{location}</span>
       </p>
     ) : null;
   
     return (
       <div className={cn("relative w-full max-w-[23rem]", className)} style={style} {...props}>
         {open ? (
           <div aria-hidden="true" style={{ height: spacer }} />
         ) : (
           <motion.div
             ref={cardRef}
             layoutId={`${id}-card`}
             transition={morph}
             style={{ borderRadius: 26, background: colors.panel }}
             className="@container/card relative overflow-hidden shadow-[0_1px_2px_rgb(0_0_0/0.06),0_12px_32px_-12px_rgb(0_0_0/0.25)]"
           >
             <motion.div layoutId={`${id}-map`} transition={morph} role="img" aria-label={alt} className="relative">
               <GlyphField image={image} colors={colors} ramp={ramp} cell={cell} className="aspect-[5/4] w-full" />
             </motion.div>
             <div className="flex flex-col gap-3 p-5" style={{ color: colors.panelFg }}>
               {panelHead}
               <div className="space-y-1.5">
                 <motion.h3 layoutId={`${id}-title`} layout="position" transition={morph} className={cn(SERIF, "text-[1.75rem] leading-[1.05] tracking-[-0.01em]")}>
                   {title}
                 </motion.h3>
                 {description ? (
                   <p className="line-clamp-2 text-[13.5px] leading-5" style={{ color: colors.panelMuted }}>
                     {description}
                   </p>
                 ) : null}
               </div>
               {locationRow}
               <div className="mt-1 flex items-center justify-between gap-3 border-t pt-3.5" style={{ borderColor: "rgb(255 255 255 / 0.16)" }}>
                 {watchers ? <Watchers watchers={watchers} colors={colors} /> : <span />}
                 <button
                   ref={expandRef}
                   type="button"
                   onClick={() => setExpanded(true)}
                   aria-haspopup="dialog"
                   className="inline-flex h-8 shrink-0 cursor-pointer items-center gap-1.5 rounded-full border px-3 text-[12.5px] font-medium outline-none transition-colors hover:bg-white/10 focus-visible:ring-2 focus-visible:ring-white/80"
                   style={{ borderColor: "rgb(255 255 255 / 0.3)", color: colors.panelFg }}
                 >
                   <Maximize2 className="size-3.5" aria-hidden="true" />
                   Expand
                 </button>
               </div>
             </div>
           </motion.div>
         )}
   
         <Dialog.Root open={open} onOpenChange={setExpanded}>
           <AnimatePresence>
             {open ? (
               <Dialog.Portal forceMount>
                 <Dialog.Overlay asChild forceMount>
                   <motion.div
                     className="fixed inset-0 z-50 bg-zinc-950/40 backdrop-blur-[2px]"
                     initial={{ opacity: 0 }}
                     animate={{ opacity: 1 }}
                     exit={{ opacity: 0 }}
                     transition={{ duration: duration.base }}
                   />
                 </Dialog.Overlay>
                 <div className="pointer-events-none fixed inset-0 z-50 flex items-center justify-center p-3 sm:p-6">
                   <Dialog.Content
                     asChild
                     forceMount
                     {...(description ? {} : { "aria-describedby": undefined })}
                     onCloseAutoFocus={(event) => {
                       // The Expand button re-mounts with the card, so return focus to it ourselves.
                       event.preventDefault();
                       requestAnimationFrame(() => expandRef.current?.focus());
                     }}
                   >
                     <motion.div
                       layoutId={`${id}-card`}
                       transition={morph}
                       style={{ borderRadius: 30, background: colors.panel }}
                       className="pointer-events-auto relative grid max-h-[calc(100dvh-1.5rem)] w-full max-w-4xl overflow-y-auto shadow-2xl outline-none md:grid-cols-[1.55fr_1fr]"
                     >
                       <motion.figure layoutId={`${id}-map`} transition={morph} className="relative m-0 overflow-hidden">
                         <div role="img" aria-label={alt} className="md:h-full">
                           <GlyphField image={image} colors={colors} ramp={ramp} cell={cell} className="aspect-[5/4] w-full md:aspect-auto md:h-full md:min-h-[30rem]" />
                         </div>
                         <figcaption
                           className="absolute inset-x-0 bottom-0 flex items-center gap-2 px-5 py-3 font-mono text-[11px]"
                           style={{ color: colors.ink, background: `linear-gradient(to top, ${colors.ground}, transparent)` }}
                         >
                           <span aria-hidden="true">Fig. 1</span>
                           <span className="truncate">{caption ?? alt}</span>
                         </figcaption>
                       </motion.figure>
                       <div className="@container/card flex flex-col gap-4 p-6" style={{ color: colors.panelFg }}>
                         <div className="md:pr-10">{panelHead}</div>
                         <div className="space-y-2">
                           <Dialog.Title asChild>
                             <motion.h2 layoutId={`${id}-title`} layout="position" transition={morph} className={cn(SERIF, "pr-8 text-[2.25rem] leading-[1.02] tracking-[-0.01em]")}>
                               {title}
                             </motion.h2>
                           </Dialog.Title>
                           {description ? (
                             <Dialog.Description className="text-[14px] leading-6" style={{ color: colors.panelMuted }}>
                               {description}
                             </Dialog.Description>
                           ) : null}
                         </div>
                         {locationRow}
                         <motion.div
                           className="mt-auto space-y-3 border-t pt-4"
                           style={{ borderColor: "rgb(255 255 255 / 0.16)" }}
                           initial={{ opacity: 0 }}
                           animate={{ opacity: 1, transition: { delay: reduceMotion ? 0 : 0.15, duration: duration.base } }}
                           exit={{ opacity: 0, transition: { duration: duration.instant } }}
                         >
                           {watchers ? <Watchers watchers={watchers} colors={colors} /> : null}
                           <p className="font-mono text-[11px]" style={{ color: colors.panelMuted }}>
                             Move across the map to stir the glyphs.
                           </p>
                         </motion.div>
                       </div>
                       <Dialog.Close
                         aria-label="Close"
                         className="absolute top-4 right-4 z-10 inline-flex size-8 cursor-pointer items-center justify-center rounded-full outline-none transition-colors hover:bg-white/15 focus-visible:ring-2 focus-visible:ring-white/80 md:top-5 md:right-5"
                         style={{ color: colors.panelFg, background: "rgb(255 255 255 / 0.1)" }}
                       >
                         <X className="size-4" aria-hidden="true" />
                       </Dialog.Close>
                     </motion.div>
                   </Dialog.Content>
                 </div>
               </Dialog.Portal>
             ) : null}
           </AnimatePresence>
         </Dialog.Root>
       </div>
     );
   }

   Show all 682 lines