> ## Documentation Index
> Fetch the complete documentation index at: https://hyperframes-feat-ad94-tune-scroll-cue.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Shatter

> VFX composition block

export const InstallCommand = ({command, item}) => {
  const [copied, setCopied] = React.useState(false);
  const [tuned, setTuned] = React.useState("");
  React.useEffect(() => {
    if (!item) return;
    const read = () => {
      try {
        const raw = new URLSearchParams(window.location.search).get(`vars-${item}`);
        if (!raw) return setTuned("");
        const parsed = JSON.parse(raw);
        if (!parsed || typeof parsed !== "object" || Array.isArray(parsed)) return setTuned("");
        if (Object.keys(parsed).length === 0) return setTuned("");
        setTuned(` --vars '${JSON.stringify(parsed)}'`);
      } catch {
        setTuned("");
      }
    };
    read();
    window.addEventListener("hf-vars-changed", read);
    window.addEventListener("popstate", read);
    return () => {
      window.removeEventListener("hf-vars-changed", read);
      window.removeEventListener("popstate", read);
    };
  }, [item]);
  const fullCommand = `${command}${tuned}`;
  const copy = async () => {
    try {
      if (navigator.clipboard && window.isSecureContext) {
        await navigator.clipboard.writeText(fullCommand);
      } else {
        const previous = document.activeElement;
        const scratch = document.createElement("textarea");
        scratch.value = fullCommand;
        scratch.setAttribute("readonly", "");
        scratch.style.position = "fixed";
        scratch.style.opacity = "0";
        document.body.appendChild(scratch);
        scratch.select();
        document.execCommand("copy");
        document.body.removeChild(scratch);
        previous?.focus?.();
      }
      setCopied(true);
      setTimeout(() => setCopied(false), 2000);
    } catch {}
  };
  return <div className="hf-install-command not-prose my-4 flex items-stretch overflow-hidden rounded-xl border border-zinc-200 bg-zinc-50 dark:border-zinc-800 dark:bg-zinc-900">
      <code className="flex-1 overflow-x-auto whitespace-nowrap border-r border-zinc-200 px-4 py-3 font-mono text-sm text-zinc-800 dark:border-zinc-800 dark:text-zinc-100">
        {fullCommand}
      </code>
      <button type="button" onClick={copy} data-copied={copied ? "true" : "false"} aria-label={`Copy ${command} to the clipboard`} className="hf-install-copy">
        <svg className="hf-install-copy-clipboard" xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 18 18" fill="none" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
          <path d="M14.25 5.25H7.25C6.14543 5.25 5.25 6.14543 5.25 7.25V14.25C5.25 15.3546 6.14543 16.25 7.25 16.25H14.25C15.3546 16.25 16.25 15.3546 16.25 14.25V7.25C16.25 6.14543 15.3546 5.25 14.25 5.25Z" />
          <path d="M2.80103 11.998L1.77203 5.07397C1.61003 3.98097 2.36403 2.96397 3.45603 2.80197L10.38 1.77297C11.313 1.63397 12.19 2.16297 12.528 3.00097" />
        </svg>
        <svg className="hf-install-copy-check" xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 18 18" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
          <path d="M2.75 9.5L6.5 13.25L15.25 4.5" />
        </svg>
      </button>
      <span className="hf-install-copy-status" role="status" aria-live="polite">
        {copied ? "Copied" : ""}
      </span>
    </div>;
};

export const CatalogSlot = ({slot, children}) => <div data-slot={slot} className="prose prose-gray dark:prose-invert">
    {children}
  </div>;

export const CatalogDetail = ({previewSrc, compositionId, compositionSrc, variables = [], title, description, meta = {}, about, attribution, rawUrl, video, poster, webgpu, needsFlag, hasCode, children}) => {
  const SHIKI = {
    punct: {
      color: "rgb(31, 35, 40)",
      "--shiki-dark": "#808080"
    },
    tag: {
      color: "rgb(17, 99, 41)",
      "--shiki-dark": "#569CD6"
    },
    attr: {
      color: "rgb(5, 80, 174)",
      "--shiki-dark": "#9CDCFE"
    },
    equals: {
      color: "rgb(31, 35, 40)",
      "--shiki-dark": "#D4D4D4"
    },
    value: {
      color: "rgb(10, 48, 105)",
      "--shiki-dark": "#CE9178"
    }
  };
  const CSS = `
.hf-ve {
  --ve-fg: #18181b;
  --ve-muted: #71717a;
  --ve-line: #e4e4e7;
  --ve-surface: #ffffff;
  --ve-sunken: #fafafa;
  --ve-hover: #f4f4f5;
  --ve-on-bg: #18181b;
  --ve-on-fg: #ffffff;
  --ve-ring: rgba(24, 24, 27, 0.14);
  --ve-danger: #b42318;
}
:where(html.dark) .hf-ve {
  --ve-fg: #f4f4f5;
  --ve-muted: #a1a1aa;
  --ve-line: #27272a;
  --ve-surface: #18181b;
  --ve-sunken: #131316;
  --ve-hover: #27272a;
  --ve-on-bg: #f4f4f5;
  --ve-on-fg: #18181b;
  --ve-ring: rgba(244, 244, 245, 0.2);
  --ve-danger: #ff9d95;
}

.hf-ve-tabs {
  display: inline-flex;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--ve-line);
  border-radius: 9999px;
  background: var(--ve-sunken);
}
.hf-ve-tab {
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 500;
  color: var(--ve-muted);
  background: transparent;
}
.hf-ve-tab[data-on="true"] {
  color: var(--ve-fg);
  background: var(--ve-hover);
}
.hf-ve-tab:focus:not(:focus-visible) { outline: none; box-shadow: none; }
.hf-ve-tab:hover:not([data-on="true"]) { color: var(--ve-fg); }

/* Not a grid. A grid row is as tall as its tallest cell, so a five-line snippet
   sat in the preview's 16:9 box with 300px of dead area under it. The inactive
   pane is taken out of flow instead — and stretches left/right rather than to
   inset 0, so the iframe keeps its own height. An iframe resized on every tab
   switch reflows the composition running inside it. */
.hf-ve-frame { position: relative; }
.hf-ve-cell { min-width: 0; }
.hf-ve-cell[data-on="false"] {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  visibility: hidden;
  pointer-events: none;
}
.hf-ve-preview {
  overflow: hidden;
  border: 1px solid var(--ve-line);
  border-radius: 12px;
}
/* CodeBlock carries the page margins (mt-5 mb-8) that separate it from prose,
   which is dead space inside a tab. Element plus two classes out-specifies a
   Tailwind utility without !important. */
.hf-ve-cell > div.code-block { margin: 0; }
/* The snippet wraps; the source does not.
   A value the reader has to read in full should not hide half of itself off the
   right edge, so the snippet pane wraps — what \`\`\`html wrap does for a fence.
   The width reset is the half that matters: the block's own <code> is sized to
   max-content, and content that never meets an edge never wraps.
   Source is left to scroll sideways like every other code block on the site.
   Wrapping it breaks its indentation, and a comment paragraph re-flowed to a
   narrow column reads worse than one the reader can scroll. */
.hf-ve-snippet .shiki,
.hf-ve-snippet .shiki code {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
/* A composition source runs to several hundred lines, and an un-capped tab
   pushes the Customize panel off the screen. The cap goes on the scroll box
   rather than the block, so the filename and its copy button stay put; and it
   is a max-height, so a short source still hugs its own content and the dead
   area under it stays gone. */
.hf-ve-cell .code-block pre {
  max-height: 460px;
  overflow: auto;
}
/* Four classes deep because the rule being answered is three
   (\`html:not(.dark) .codeblock-light pre.shiki code\`), and a shorter selector
   silently loses to it. */
.hf-ve .hf-ve-snippet .code-block pre.shiki code {
  width: auto;
  min-width: 0;
}

.hf-ve-panel {
  margin-top: 12px;
  border: 1px solid var(--ve-line);
  border-radius: 12px;
}
.hf-ve-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  border-bottom: 1px solid var(--ve-line);
}
.hf-ve-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ve-muted);
}
.hf-ve-grid {
  display: grid;
  gap: 16px 28px;
  padding: 16px;
}
@media (min-width: 640px) {
  .hf-ve-grid { grid-template-columns: 1fr 1fr; }
}
.hf-ve-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 6px;
}
.hf-ve-label { font-size: 14px; font-weight: 500; color: var(--ve-fg); }
.hf-ve-value {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--ve-muted);
}
.hf-ve-desc {
  margin: 6px 0 0;
  font-size: 12px;
  line-height: 1.45;
  color: var(--ve-muted);
}

.hf-ve-btn {
  padding: 4px 10px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 500;
  color: var(--ve-muted);
  background: transparent;
}
.hf-ve-btn:hover:not(:disabled) { color: var(--ve-fg); background: var(--ve-hover); }
.hf-ve-btn:disabled { opacity: 0.4; cursor: default; }

.hf-ve-field {
  width: 100%;
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--ve-line);
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--ve-fg);
  background: var(--ve-surface);
}
.hf-ve-field::placeholder { color: var(--ve-muted); }
.hf-ve-mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }

/* Focus, once, for every control here. A ring outside the border rather than a
   border colour alone: the border already carries the resting state, so
   recolouring it is a change a reader can miss. Nothing shifts, because the
   ring is a shadow. :focus-visible, so a pointer click does not light it up. */
.hf-ve-field:focus-visible,
.hf-ve-seg-btn:focus-visible,
.hf-ve-tab:focus-visible,
.hf-ve-btn:focus-visible,
.hf-ve-switch:focus-visible,
.hf-ve-swatch:focus-visible {
  outline: none;
  border-color: var(--ve-on-bg);
  box-shadow: 0 0 0 3px var(--ve-ring);
}
/* A range is a track, and ringing the track rings a pill the width of the
   panel. The thumb is the part that has focus, so the thumb is what says so. */
.hf-ve-range:focus-visible { outline: none; }
.hf-ve-range:focus-visible::-webkit-slider-thumb { box-shadow: 0 0 0 4px var(--ve-ring); }
.hf-ve-range:focus-visible::-moz-range-thumb { box-shadow: 0 0 0 4px var(--ve-ring); }
/* Safari still fires :focus for a click on a button, so the pair is kept. */
.hf-ve-field:focus { outline: none; border-color: var(--ve-on-bg); }

/* The enum branch above sends anything past four options here. No shipped item
   does today (every enum in the registry has two to four), so this is styled to
   the point of not looking foreign and no further — the chevron is one neutral
   grey rather than a per-theme pair, because a data URI cannot read a token. */
.hf-ve-select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 34px;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%2389898f' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m4 6 4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  cursor: pointer;
}

.hf-ve-seg {
  display: flex;
  padding: 2px;
  border: 1px solid var(--ve-line);
  border-radius: 8px;
}
.hf-ve-seg-btn {
  flex: 1;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  color: var(--ve-muted);
  background: transparent;
}
.hf-ve-seg-btn:hover:not([data-on="true"]) { color: var(--ve-fg); background: var(--ve-hover); }
.hf-ve-seg-btn[data-on="true"] { color: var(--ve-on-fg); background: var(--ve-on-bg); }

/* A range, rebuilt. \`accent-color\` alone leaves the platform's hairline track,
   which reads as an unstyled browser part next to everything else here. Each
   engine names its parts differently and shares none of them, so the same
   track and thumb are written twice; a selector either engine cannot parse
   drops the whole rule, which is why they are never grouped. */
.hf-ve-range {
  width: 100%;
  height: 20px;
  appearance: none;
  -webkit-appearance: none;
  border: 0;
  border-radius: 9999px;
  background: transparent;
  cursor: pointer;
}
/* --ve-fill is set per render: painting progress on a native track means a
   two-stop gradient, and only the component knows where the value sits. */
.hf-ve-range::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 9999px;
  background: linear-gradient(
    to right,
    var(--ve-on-bg) var(--ve-fill, 0%),
    var(--ve-line) var(--ve-fill, 0%)
  );
}
.hf-ve-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  margin-top: -5px;
  border: 2px solid var(--ve-on-bg);
  border-radius: 9999px;
  background: var(--ve-surface);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.14);
}
.hf-ve-range::-moz-range-track { height: 6px; border-radius: 9999px; background: var(--ve-line); }
.hf-ve-range::-moz-range-progress { height: 6px; border-radius: 9999px; background: var(--ve-on-bg); }
.hf-ve-range::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border: 2px solid var(--ve-on-bg);
  border-radius: 9999px;
  background: var(--ve-surface);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.14);
}
/* Hover reads on the part being aimed at rather than on the whole strip: a
   track that darkens under the pointer says "click me and the thumb comes
   here", which is what a native range actually does. */
.hf-ve-range:hover::-webkit-slider-thumb { border-color: var(--ve-fg); }
.hf-ve-range:hover::-moz-range-thumb { border-color: var(--ve-fg); }

/* The number control, and the three things it used to leave unsaid.
 *
 * It could not say where the range ends, so a reader dragging \`stroke_width\`
 * had no idea whether 12 was nearly nothing or nearly everything: the ends now
 * carry min and max.
 *
 * It could not say where the author left the knob, which is the one reference
 * point a panel built around deviating from the author's choice needs: a mark
 * on the track is the default, and a double click puts the value back on it.
 *
 * And it printed the value in the label row, a fixed distance from a thumb that
 * moves, so reading a drag meant looking in two places at once. The value rides
 * the thumb instead.
 *
 * Still a real <input type="range">. Every custom slider on the web reimplements
 * keyboard stepping, touch, and the screen-reader contract, and most of them do
 * one of the three badly; none of what is added here needed the element
 * replaced. Nothing moves that a finger is not moving: the value tracks the
 * pointer because it is the pointer's own readout, and the only transition is
 * the colour one every other control here shares. */
.hf-ve-slider {
  display: grid;
  gap: 1px;
}
.hf-ve-ruler {
  position: relative;
  height: 17px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  line-height: 17px;
  color: var(--ve-muted);
}
.hf-ve-bound {
  position: absolute;
  top: 0;
}
.hf-ve-bound[data-end="min"] { left: 0; }
.hf-ve-bound[data-end="max"] { right: 0; }
/* An end steps aside rather than being overprinted by the value arriving on
   top of it. Visibility, not opacity: there is no fade here, the label is
   either the thing being read or it is out of the way. */
.hf-ve-ruler[data-near="min"] .hf-ve-bound[data-end="min"],
.hf-ve-ruler[data-near="max"] .hf-ve-bound[data-end="max"] {
  visibility: hidden;
}
/* translateX is centring, not motion: the readout is as wide as its own digits
   and has to hang half of that either side of the thumb. */
.hf-ve-readout {
  position: absolute;
  top: 0;
  left: calc(var(--ve-fill, 0%) + var(--ve-fill-nudge, 0px));
  transform: translateX(-50%);
  color: var(--ve-fg);
  font-weight: 600;
  white-space: nowrap;
}
.hf-ve-track {
  position: relative;
  display: block;
}
.hf-ve-range { display: block; }
.hf-ve-default {
  position: absolute;
  top: 5px;
  left: calc(var(--ve-default, 50%) + var(--ve-default-nudge, 0px));
  width: 2px;
  height: 10px;
  margin-left: -1px;
  border-radius: 1px;
  background: var(--ve-muted);
  pointer-events: none;
}

/* A switch, for the boolean type. It used to fall through to the text input at
   the end of control(), which asked the reader to type the word "true". */
.hf-ve-switch {
  display: inline-flex;
  align-items: center;
  width: 40px;
  height: 24px;
  padding: 2px;
  border: 1px solid var(--ve-line);
  border-radius: 9999px;
  background: var(--ve-sunken);
  cursor: pointer;
}
.hf-ve-switch[data-on="true"] { border-color: var(--ve-on-bg); background: var(--ve-on-bg); }
.hf-ve-switch-dot {
  width: 18px;
  height: 18px;
  border-radius: 9999px;
  background: var(--ve-surface);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.18);
}
.hf-ve-switch[data-on="true"] .hf-ve-switch-dot {
  background: var(--ve-on-fg);
  transform: translateX(16px);
}

/* The SVG import control: the same text field, with a way to fill it.
 *
 * The whole block is the drop target, not just the field, so a file let go over
 * the button lands too. It says so by taking the same border colour a focused
 * field takes, which is the one feedback channel this panel has left.
 *
 * A bare <input type="file"> is unlabelled, unstyleable and reads as "No file
 * chosen" next to controls that carry their own value, so the real input is
 * taken out of the layout and the tab order and a button in front of it is what
 * a reader sees and what a keyboard reaches. Hidden with size and opacity
 * rather than display:none, because an input that is not rendered at all is one
 * some browsers decline to open a picker for. */
.hf-ve-drop {
  display: grid;
  gap: 8px;
}
.hf-ve-drop[data-over="true"] .hf-ve-dropzone {
  border-color: var(--ve-on-bg);
  border-style: solid;
}

/* The import is the action almost everyone wants: a reader arrives with a
   shape, not with path data. A dashed target reads as "put a file here" on
   sight, where a button beneath a field of coordinates read as an afterthought
   to the coordinates. */
.hf-ve-dropzone {
  display: grid;
  justify-items: center;
  gap: 6px;
  padding: 18px 12px;
  border: 1px dashed var(--ve-line);
  border-radius: 10px;
  background: var(--ve-surface);
  text-align: center;
}
.hf-ve-dropzone .hf-ve-btn {
  padding: 7px 16px;
  font-size: 13px;
  color: var(--ve-fg);
  border-color: var(--ve-line);
  background: var(--ve-bg);
}
.hf-ve-dropzone .hf-ve-btn:hover:not(:disabled) { background: var(--ve-hover); }

/* Path data stays reachable, but a reader has to ask for it. A native details
   element rather than our own toggle, so it opens with the keyboard and is
   announced as expandable without any wiring. */
.hf-ve-advanced > summary {
  font-size: 12px;
  color: var(--ve-muted);
  cursor: pointer;
  list-style: none;
  padding: 2px 0;
}
.hf-ve-advanced > summary::-webkit-details-marker { display: none; }
.hf-ve-advanced > summary::before { content: "▸ "; }
.hf-ve-advanced[open] > summary::before { content: "▾ "; }
.hf-ve-advanced > summary:hover { color: var(--ve-fg); }
.hf-ve-advanced .hf-ve-field { margin-top: 6px; }
.hf-ve-file {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.hf-ve-note {
  margin: 0;
  min-width: 0;
  font-size: 12px;
  line-height: 1.4;
  color: var(--ve-muted);
}
.hf-ve-note[data-tone="error"] { color: var(--ve-danger); }
.hf-ve-note[data-tone="ok"] { color: var(--ve-fg); }

.hf-ve-swatch {
  width: 40px;
  height: 32px;
  flex-shrink: 0;
  padding: 2px;
  border: 1px solid var(--ve-line);
  border-radius: 8px;
  background: var(--ve-surface);
  cursor: pointer;
}

/* Nothing here moves.
 *
 * A press-down scale on every button and field, a scale-in on the tab panes, a
 * springing switch knob and a growing slider thumb were all flourish: the
 * control had already told you what it did by changing colour, and the motion
 * was a second, slower answer to a question already settled. What is left is
 * one colour transition, short enough to read as immediate and long enough not
 * to flicker. A control here may change colour; it does not move.
 *
 * Which is also why there is no prefers-reduced-motion block any more. There is
 * no motion left to reduce. */
.hf-ve-tint {
  transition:
    background-color 100ms ease,
    border-color 100ms ease,
    color 100ms ease;
}

.hf-ve-head-title { margin: 8px 0 28px; }
.hf-ve-head-title h1 { margin: 0; font-size: 44px; line-height: 1.1; font-weight: 700; letter-spacing: -0.02em; color: var(--ve-fg); }
.hf-ve-head-title p { margin: 12px 0 0; font-size: 18px; line-height: 1.5; color: var(--ve-muted); max-width: 70ch; }
@media (max-width: 640px) { .hf-ve-head-title h1 { font-size: 32px; } }
/* Item page anatomy: bar, stage beside Tune, tabs, tab body. */
.hf-ve-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 20px;
  margin-bottom: 16px;
}
.hf-ve-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 18px;
  font-size: 14px;
  color: var(--ve-muted);
}
.hf-ve-meta b { color: var(--ve-fg); font-weight: 600; }
.hf-ve-badge {
  padding: 2px 10px;
  border-radius: 9999px;
  font-size: 12px;
  background: var(--ve-hover);
}
.hf-ve-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.hf-ve-action {
  display: inline-grid;
  align-items: center;
  justify-items: center;
  padding: 8px 14px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ve-fg);
  background: var(--ve-hover);
  text-decoration: none;
  border: 0;
  cursor: pointer;
}
.hf-ve-action-label { grid-area: 1 / 1; }
.hf-ve-action-label[data-shown="false"] { visibility: hidden; }
.hf-ve-action:hover:not(:disabled) { background: var(--ve-line); }
.hf-ve-action:disabled { opacity: 0.4; cursor: default; }
.hf-ve-tune-foot .hf-ve-action { justify-content: center; white-space: nowrap; }
.hf-ve-action[data-primary="true"] { color: var(--ve-on-fg); background: var(--ve-on-bg); }
.hf-ve-action[data-primary="true"]:hover:not(:disabled) { background: var(--ve-on-bg); opacity: 0.88; }
.hf-ve-main { display: grid; gap: 16px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 1024px) {
  .hf-ve-main[data-tune="true"] { grid-template-columns: minmax(0, 1fr) 340px; }
}
.hf-ve-stage {
  overflow: hidden;
  border: 1px solid var(--ve-line);
  border-radius: 14px;
  background: var(--ve-surface);
}
.hf-ve-stage .hf-ve-preview { border: 0; border-radius: 0; }
.hf-ve-caption { padding: 10px 16px; font-size: 13px; color: var(--ve-muted); }
.hf-ve-caption span + span { margin-left: 16px; }
.hf-ve-tune {
  position: relative;
  min-height: 320px;
  border: 1px solid var(--ve-line);
  border-radius: 14px;
  background: var(--ve-surface);
}
.hf-ve-tune-inner { display: flex; flex-direction: column; max-height: 520px; }
@media (min-width: 1024px) {
  .hf-ve-tune-inner { position: absolute; inset: 0; max-height: none; }
}
.hf-ve-tune-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--ve-line);
  font-weight: 600;
}
.hf-ve-tune-head small { font-weight: 400; font-size: 13px; color: var(--ve-muted); }
.hf-ve-tune-list-wrap { position: relative; flex: 1; min-height: 0; display: flex; }
.hf-ve-tune-list {
  flex: 1;
  min-height: 0;
  overflow: auto;
  overscroll-behavior: contain;
  display: grid;
  gap: 16px;
  padding: 16px;
  align-content: start;
  mask-image: linear-gradient(to bottom, transparent 0, #000 12px, #000 calc(100% - 12px), transparent 100%);
}
.hf-ve-tune-more {
  position: absolute;
  left: 50%;
  bottom: 6px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 9999px;
  background: var(--ve-hover);
  color: var(--ve-muted);
  pointer-events: none;
  animation: hf-ve-tune-more-pulse 1.6s ease-in-out infinite;
}
@keyframes hf-ve-tune-more-pulse {
  0%, 100% { opacity: 1; transform: translateX(-50%) scale(1); }
  50% { opacity: 0.55; transform: translateX(-50%) scale(1.15); }
}
@media (prefers-reduced-motion: reduce) {
  .hf-ve-tune-more { animation: none; }
}
.hf-ve-tune-foot {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 8px;
  padding: 16px;
  border-top: 1px solid var(--ve-line);
}
.hf-ve-tabs-row { margin: 20px 0 0 16px; }
.hf-ve-tabs-row .hf-ve-tab { padding: 6px 16px; font-size: 14px; }
.hf-ve-tabs-row .hf-ve-tab small { margin-left: 6px; font-weight: 400; opacity: 0.7; }
.hf-ve-body { padding: 2rem 0 0 16px; }
.hf-ve-install { margin: 0 0 28px; }
.hf-ve-install-title { margin: 0 0 12px; font-size: 24px; line-height: 1.3; font-weight: 600; letter-spacing: -0.01em; color: var(--ve-fg); }
.hf-ve-about h3 { margin: 0 0 8px; font-size: 16px; font-weight: 600; }
.hf-ve-about p { margin: 0 0 12px; line-height: 1.6; max-width: 72ch; }
.hf-ve-about .hf-ve-attr { font-size: 14px; color: var(--ve-muted); }
.hf-ve-about .hf-ve-attr a { color: var(--ve-fg); text-decoration: underline; }
.hf-ve-body-pane[hidden] { display: none; }
.hf-ve-slots > [data-slot] { display: none; }
.hf-ve-slots[data-tab="code"] > [data-slot="code"],
.hf-ve-slots[data-tab="docs"] > [data-slot="docs"] { display: block; }
.hf-ve-body-pane .code-block pre,
.hf-ve-slots [data-slot="code"] pre { max-height: 560px; overflow: auto; }
@media (max-width: 640px) {
  .hf-ve-actions { width: 100%; }
  .hf-ve-action { flex: 1 1 calc(50% - 8px); justify-content: center; }
}

`;
  const isSvgPathData = value => typeof value === "string" && (/^\s*[Mm]\s*-?[\d.]/).test(value);
  const parsePathData = d => {
    const source = String(d);
    const arity = {
      M: 2,
      L: 2,
      H: 1,
      V: 1,
      C: 6,
      S: 4,
      Q: 4,
      T: 2,
      A: 7,
      Z: 0
    };
    const commands = [];
    let at = 0;
    let code = "";
    const separator = () => {
      while (at < source.length && (/[\s,]/).test(source[at])) at += 1;
    };
    const digits = () => {
      while (at < source.length && source[at] >= "0" && source[at] <= "9") at += 1;
    };
    const number = () => {
      separator();
      const start = at;
      if (source[at] === "+" || source[at] === "-") at += 1;
      digits();
      if (source[at] === ".") {
        at += 1;
        digits();
      }
      if (source[at] === "e" || source[at] === "E") {
        at += 1;
        if (source[at] === "+" || source[at] === "-") at += 1;
        digits();
      }
      const text = source.slice(start, at);
      const value = Number(text);
      if (text === "" || !Number.isFinite(value)) {
        throw new Error(`expected a number at character ${start + 1}`);
      }
      return value;
    };
    const flag = () => {
      separator();
      const character = source[at];
      if (character !== "0" && character !== "1") {
        throw new Error(`expected an arc flag at character ${at + 1}`);
      }
      at += 1;
      return Number(character);
    };
    separator();
    while (at < source.length) {
      const character = source[at];
      if ((/[a-zA-Z]/).test(character)) {
        if (arity[character.toUpperCase()] === undefined) {
          throw new Error(`unknown command "${character}"`);
        }
        code = character;
        at += 1;
      } else if (code === "") {
        throw new Error("path data must open with a command");
      } else if (code === "M" || code === "m") {
        code = code === "M" ? "L" : "l";
      } else if (code === "Z" || code === "z") {
        throw new Error(`expected a command at character ${at + 1}`);
      }
      const letter = code.toUpperCase();
      const args = [];
      if (letter === "A") {
        args.push(number(), number(), number(), flag(), flag(), number(), number());
      } else {
        for (let taken = 0; taken < arity[letter]; taken += 1) args.push(number());
      }
      commands.push({
        code,
        args
      });
      separator();
    }
    if (commands.length === 0) throw new Error("path data is empty");
    return commands;
  };
  const normalisePathData = commands => {
    const out = [];
    let x = 0;
    let y = 0;
    let startX = 0;
    let startY = 0;
    let cubicControl = null;
    let quadraticControl = null;
    for (const {code, args} of commands) {
      const letter = code.toUpperCase();
      const relative = code !== letter;
      const dx = relative ? x : 0;
      const dy = relative ? y : 0;
      const pairs = values => {
        const mapped = [];
        for (let index = 0; index + 1 < values.length; index += 2) {
          mapped.push(values[index] + dx, values[index + 1] + dy);
        }
        return mapped;
      };
      let nextCubic = null;
      let nextQuadratic = null;
      if (letter === "M") {
        const [px, py] = pairs(args);
        out.push({
          code: "M",
          args: [px, py]
        });
        x = px;
        y = py;
        startX = px;
        startY = py;
      } else if (letter === "L") {
        const [px, py] = pairs(args);
        out.push({
          code: "L",
          args: [px, py]
        });
        x = px;
        y = py;
      } else if (letter === "H") {
        x = args[0] + dx;
        out.push({
          code: "L",
          args: [x, y]
        });
      } else if (letter === "V") {
        y = args[0] + dy;
        out.push({
          code: "L",
          args: [x, y]
        });
      } else if (letter === "C") {
        const points = pairs(args);
        out.push({
          code: "C",
          args: points
        });
        nextCubic = [points[2], points[3]];
        x = points[4];
        y = points[5];
      } else if (letter === "S") {
        const points = pairs(args);
        const first = cubicControl ? [2 * x - cubicControl[0], 2 * y - cubicControl[1]] : [x, y];
        out.push({
          code: "C",
          args: [...first, ...points]
        });
        nextCubic = [points[0], points[1]];
        x = points[2];
        y = points[3];
      } else if (letter === "Q") {
        const points = pairs(args);
        out.push({
          code: "Q",
          args: points
        });
        nextQuadratic = [points[0], points[1]];
        x = points[2];
        y = points[3];
      } else if (letter === "T") {
        const points = pairs(args);
        const control = quadraticControl ? [2 * x - quadraticControl[0], 2 * y - quadraticControl[1]] : [x, y];
        out.push({
          code: "Q",
          args: [...control, ...points]
        });
        nextQuadratic = control;
        x = points[0];
        y = points[1];
      } else if (letter === "A") {
        const endX = args[5] + dx;
        const endY = args[6] + dy;
        out.push(...arcToCubics(x, y, args[0], args[1], args[2], args[3], args[4], endX, endY));
        x = endX;
        y = endY;
      } else if (letter === "Z") {
        out.push({
          code: "Z",
          args: []
        });
        x = startX;
        y = startY;
      }
      cubicControl = nextCubic;
      quadraticControl = nextQuadratic;
    }
    return out;
  };
  const arcToCubics = (x1, y1, rx, ry, rotation, largeArc, sweep, x2, y2) => {
    if (x1 === x2 && y1 === y2) return [];
    let radiusX = Math.abs(rx);
    let radiusY = Math.abs(ry);
    if (radiusX === 0 || radiusY === 0) return [{
      code: "L",
      args: [x2, y2]
    }];
    const phi = rotation * Math.PI / 180;
    const cosPhi = Math.cos(phi);
    const sinPhi = Math.sin(phi);
    const midX = (x1 - x2) / 2;
    const midY = (y1 - y2) / 2;
    const primeX = cosPhi * midX + sinPhi * midY;
    const primeY = -sinPhi * midX + cosPhi * midY;
    const oversize = primeX * primeX / (radiusX * radiusX) + primeY * primeY / (radiusY * radiusY);
    if (oversize > 1) {
      const grow = Math.sqrt(oversize);
      radiusX *= grow;
      radiusY *= grow;
    }
    const denominator = radiusX * radiusX * primeY * primeY + radiusY * radiusY * primeX * primeX;
    const numerator = radiusX * radiusX * radiusY * radiusY - radiusX * radiusX * primeY * primeY - radiusY * radiusY * primeX * primeX;
    const factor = (largeArc === sweep ? -1 : 1) * Math.sqrt(Math.max(0, numerator) / denominator);
    const centrePrimeX = factor * radiusX * primeY / radiusY;
    const centrePrimeY = -factor * radiusY * primeX / radiusX;
    const centreX = cosPhi * centrePrimeX - sinPhi * centrePrimeY + (x1 + x2) / 2;
    const centreY = sinPhi * centrePrimeX + cosPhi * centrePrimeY + (y1 + y2) / 2;
    const angle = (ux, uy, vx, vy) => {
      const length = Math.hypot(ux, uy) * Math.hypot(vx, vy);
      const cosine = length === 0 ? 1 : Math.min(1, Math.max(-1, (ux * vx + uy * vy) / length));
      return (ux * vy - uy * vx < 0 ? -1 : 1) * Math.acos(cosine);
    };
    const fromX = (primeX - centrePrimeX) / radiusX;
    const fromY = (primeY - centrePrimeY) / radiusY;
    const toX = (-primeX - centrePrimeX) / radiusX;
    const toY = (-primeY - centrePrimeY) / radiusY;
    const start = angle(1, 0, fromX, fromY);
    let sweptAngle = angle(fromX, fromY, toX, toY);
    if (!sweep && sweptAngle > 0) sweptAngle -= 2 * Math.PI;
    if (sweep && sweptAngle < 0) sweptAngle += 2 * Math.PI;
    const steps = Math.max(1, Math.ceil(Math.abs(sweptAngle) / (Math.PI / 2)));
    const step = sweptAngle / steps;
    const handle = 4 / 3 * Math.tan(step / 4);
    const at = t => [centreX + radiusX * Math.cos(t) * cosPhi - radiusY * Math.sin(t) * sinPhi, centreY + radiusX * Math.cos(t) * sinPhi + radiusY * Math.sin(t) * cosPhi];
    const slope = t => [-radiusX * Math.sin(t) * cosPhi - radiusY * Math.cos(t) * sinPhi, -radiusX * Math.sin(t) * sinPhi + radiusY * Math.cos(t) * cosPhi];
    const out = [];
    for (let index = 0; index < steps; index += 1) {
      const from = start + index * step;
      const to = from + step;
      const [ax, ay] = at(from);
      const [bx, by] = at(to);
      const [aSlopeX, aSlopeY] = slope(from);
      const [bSlopeX, bSlopeY] = slope(to);
      out.push({
        code: "C",
        args: [ax + handle * aSlopeX, ay + handle * aSlopeY, bx - handle * bSlopeX, by - handle * bSlopeY, bx, by]
      });
    }
    const last = out[out.length - 1];
    last.args[4] = x2;
    last.args[5] = y2;
    return out;
  };
  const transformPathData = (segments, matrix) => segments.map(({code, args}) => {
    const moved = [];
    for (let index = 0; index + 1 < args.length; index += 2) {
      const x = args[index];
      const y = args[index + 1];
      moved.push(matrix.a * x + matrix.c * y + matrix.e, matrix.b * x + matrix.d * y + matrix.f);
    }
    return {
      code,
      args: moved
    };
  });
  const fitMatrix = (source, target) => {
    const chosen = Math.min(target.width / source.width, target.height / source.height);
    const scale = Number.isFinite(chosen) && chosen > 0 ? chosen : 1;
    return {
      a: scale,
      b: 0,
      c: 0,
      d: scale,
      e: target.x + target.width / 2 - (source.x + source.width / 2) * scale,
      f: target.y + target.height / 2 - (source.y + source.height / 2) * scale
    };
  };
  const printPathData = segments => segments.map(({code, args}) => {
    if (args.length === 0) return code;
    const numbers = args.map(value => {
      const rounded = Math.round(value * 100) / 100;
      return String(Object.is(rounded, -0) ? 0 : rounded);
    });
    return `${code} ${numbers.join(" ")}`;
  }).join(" ");
  const shapePathData = (tag, attrs) => {
    const number = (name, fallback = 0) => {
      const value = parseFloat(attrs[name]);
      return Number.isFinite(value) ? value : fallback;
    };
    if (tag === "path") {
      const d = typeof attrs.d === "string" ? attrs.d.trim() : "";
      return d === "" ? null : d;
    }
    if (tag === "rect") {
      const width = number("width");
      const height = number("height");
      if (!(width > 0) || !(height > 0)) return null;
      const x = number("x");
      const y = number("y");
      const declaredX = parseFloat(attrs.rx);
      const declaredY = parseFloat(attrs.ry);
      const rawX = Number.isFinite(declaredX) ? declaredX : declaredY;
      const rawY = Number.isFinite(declaredY) ? declaredY : declaredX;
      const rx = Math.min(Math.max(Number.isFinite(rawX) ? rawX : 0, 0), width / 2);
      const ry = Math.min(Math.max(Number.isFinite(rawY) ? rawY : 0, 0), height / 2);
      if (rx === 0 || ry === 0) {
        return `M ${x} ${y} H ${x + width} V ${y + height} H ${x} Z`;
      }
      return [`M ${x + rx} ${y}`, `H ${x + width - rx}`, `A ${rx} ${ry} 0 0 1 ${x + width} ${y + ry}`, `V ${y + height - ry}`, `A ${rx} ${ry} 0 0 1 ${x + width - rx} ${y + height}`, `H ${x + rx}`, `A ${rx} ${ry} 0 0 1 ${x} ${y + height - ry}`, `V ${y + ry}`, `A ${rx} ${ry} 0 0 1 ${x + rx} ${y}`, "Z"].join(" ");
    }
    if (tag === "circle" || tag === "ellipse") {
      const rx = tag === "circle" ? number("r") : number("rx");
      const ry = tag === "circle" ? number("r") : number("ry");
      if (!(rx > 0) || !(ry > 0)) return null;
      const cx = number("cx");
      const cy = number("cy");
      return [`M ${cx - rx} ${cy}`, `A ${rx} ${ry} 0 1 0 ${cx + rx} ${cy}`, `A ${rx} ${ry} 0 1 0 ${cx - rx} ${cy}`, "Z"].join(" ");
    }
    if (tag === "line") {
      const x1 = number("x1");
      const y1 = number("y1");
      const x2 = number("x2");
      const y2 = number("y2");
      if (x1 === x2 && y1 === y2) return null;
      return `M ${x1} ${y1} L ${x2} ${y2}`;
    }
    if (tag === "polyline" || tag === "polygon") {
      const values = String(attrs.points ?? "").trim().split(/[\s,]+/).map(Number).filter(value => Number.isFinite(value));
      if (values.length < 4) return null;
      const steps = [`M ${values[0]} ${values[1]}`];
      for (let index = 2; index + 1 < values.length; index += 2) {
        steps.push(`L ${values[index]} ${values[index + 1]}`);
      }
      if (tag === "polygon") steps.push("Z");
      return steps.join(" ");
    }
    return null;
  };
  const svgToPathData = (svgText, targetPathData, doc = document) => {
    const NS = "http://www.w3.org/2000/svg";
    const parsed = new DOMParser().parseFromString(String(svgText), "image/svg+xml");
    if (parsed.getElementsByTagName("parsererror").length > 0 || !parsed.documentElement || parsed.documentElement.localName !== "svg") {
      throw new Error("That file is not an SVG, or its markup is malformed.");
    }
    const host = doc.createElement("div");
    host.setAttribute("aria-hidden", "true");
    host.style.cssText = "position:fixed;left:-99999px;top:0;width:600px;height:600px;overflow:hidden;";
    const svg = doc.importNode(parsed.documentElement, true);
    host.appendChild(svg);
    doc.body.appendChild(host);
    try {
      const reference = doc.createElementNS(NS, "g");
      svg.appendChild(reference);
      const rootMatrix = reference.getScreenCTM();
      const defining = ["defs", "clipPath", "mask", "symbol", "marker", "pattern"];
      const isDefinition = element => {
        for (let node = element.parentNode; node && node !== svg; node = node.parentNode) {
          if (defining.includes(node.localName)) return true;
        }
        return false;
      };
      const shapes = [...svg.querySelectorAll("path,rect,circle,ellipse,line,polyline,polygon")];
      const segments = [];
      let shapesUsed = 0;
      let firstProblem = null;
      for (const element of shapes) {
        if (isDefinition(element)) continue;
        if (doc.defaultView.getComputedStyle(element).display === "none") continue;
        const attrs = {};
        for (const attribute of element.attributes) attrs[attribute.localName] = attribute.value;
        const d = shapePathData(element.localName, attrs);
        if (d === null) continue;
        let own;
        try {
          own = normalisePathData(parsePathData(d));
        } catch (error) {
          firstProblem = firstProblem ?? error.message;
          continue;
        }
        const matrix = element.getScreenCTM();
        segments.push(...rootMatrix && matrix ? transformPathData(own, rootMatrix.inverse().multiply(matrix)) : own);
        shapesUsed += 1;
      }
      if (segments.length === 0) {
        if (firstProblem) throw new Error(`This SVG has unreadable path data: ${firstProblem}.`);
        const untraceable = ["text", "image", "use"].find(tag => svg.getElementsByTagName(tag).length > 0);
        throw new Error(untraceable ? `This SVG draws with <${untraceable}>, which has no outline to trace. Convert it to paths and try again.` : "This SVG has no shapes to import.");
      }
      const probe = doc.createElementNS(NS, "path");
      svg.appendChild(probe);
      probe.setAttribute("d", printPathData(segments));
      const source = probe.getBBox();
      if (!(source.width > 0) || !(source.height > 0)) {
        if (!(source.width > 0) && !(source.height > 0)) {
          throw new Error("This SVG's shapes have no size.");
        }
      }
      probe.setAttribute("d", String(targetPathData));
      const target = probe.getBBox();
      return {
        d: printPathData(transformPathData(segments, fitMatrix(source, target))),
        shapes: shapesUsed
      };
    } finally {
      host.remove();
    }
  };
  const granularity = value => {
    const decimals = String(value).split(".")[1];
    return decimals ? Number(`1e-${decimals.length}`) : 1;
  };
  const readout = (variable, value) => {
    if (variable.type === "number") return "";
    if (variable.type === "color") return String(value);
    if (variable.type === "enum") {
      const hit = (variable.options ?? []).find(o => o.value === value);
      return hit ? hit.label ?? hit.value : String(value);
    }
    return "";
  };
  const control = (variable, value, onChange, note, onNote, onTyping) => {
    const options = variable.options ?? [];
    if (variable.type === "enum" && options.length > 0 && options.length <= 4) {
      return <div className="hf-ve-seg">
          {options.map(o => <button key={o.value} type="button" data-on={value === o.value} aria-pressed={value === o.value} onClick={() => onChange(o.value)} className="hf-ve-seg-btn hf-ve-tint">
              {o.label ?? o.value}
            </button>)}
        </div>;
    }
    if (variable.type === "enum") {
      return <select className="hf-ve-field hf-ve-select hf-ve-tint" value={value} aria-label={variable.label ?? variable.id} onChange={e => onChange(e.target.value)}>
          {options.map(o => <option key={o.value} value={o.value}>
              {o.label ?? o.value}
            </option>)}
        </select>;
    }
    if (variable.type === "number") {
      const min = Number(variable.min);
      const max = Number(variable.max);
      const unit = variable.unit ?? "";
      const declaredStep = Number(variable.step);
      const step = declaredStep > 0 ? declaredStep : 1;
      const label = variable.label ?? variable.id;
      if (!(Number.isFinite(min) && Number.isFinite(max) && max > min)) {
        return <input type="number" className="hf-ve-field hf-ve-mono hf-ve-tint" value={value} min={Number.isFinite(min) ? min : undefined} max={Number.isFinite(max) ? max : undefined} step={declaredStep > 0 ? declaredStep : granularity(variable.default)} aria-label={label} onChange={e => {
          const next = Number(e.target.value);
          if (e.target.value !== "" && Number.isFinite(next)) onChange(next);
        }} />;
      }
      const at = n => Math.min(1, Math.max(0, (Number(n) - min) / (max - min)));
      const now = at(value);
      const authored = at(variable.default);
      const place = fraction => ({
        offset: `${fraction * 100}%`,
        nudge: `${(0.5 - fraction) * 16}px`
      });
      const value_ = place(now);
      const default_ = place(authored);
      const grain = event => {
        event.currentTarget.step = event.shiftKey ? step / 10 : step;
      };
      return <div className="hf-ve-slider" style={{
        "--ve-fill": value_.offset,
        "--ve-fill-nudge": value_.nudge,
        "--ve-default": default_.offset,
        "--ve-default-nudge": default_.nudge
      }}>
          {}
          <div className="hf-ve-ruler" data-near={now < 0.14 ? "min" : now > 0.86 ? "max" : ""} aria-hidden="true">
            <span className="hf-ve-bound" data-end="min">
              {min}
            </span>
            <span className="hf-ve-bound" data-end="max">
              {max}
            </span>
            <span className="hf-ve-readout">
              {value}
              {unit}
            </span>
          </div>
          <span className="hf-ve-track">
            <input type="range" className="hf-ve-range" min={min} max={max} step={step} value={value} aria-label={label} aria-valuetext={`${value}${unit}`} onChange={e => onChange(Number(e.target.value))} onPointerDown={grain} onKeyDown={grain} onDoubleClick={() => onChange(variable.default)} />
            {}
            {Math.abs(now - authored) > 0.04 && <span className="hf-ve-default" aria-hidden="true" />}
          </span>
        </div>;
    }
    if (variable.type === "boolean") {
      const on = value === true || value === "true";
      return <button type="button" role="switch" aria-checked={on} aria-label={variable.label ?? variable.id} data-on={on} onClick={() => onChange(!on)} className="hf-ve-switch">
          <span className="hf-ve-switch-dot" />
        </button>;
    }
    if (variable.type === "color") {
      return <div className="flex items-center gap-2">
          <input type="color" className="hf-ve-swatch hf-ve-tint" value={value} aria-label={variable.label ?? variable.id} onChange={e => onChange(e.target.value)} />
          <input type="text" className="hf-ve-field hf-ve-mono hf-ve-tint" value={value} onChange={e => onChange(e.target.value)} onFocus={() => onTyping(variable.id)} onBlur={() => onTyping(null)} onKeyDown={e => {
        if (e.key === "Enter") e.currentTarget.blur();
      }} />
        </div>;
    }
    if (isSvgPathData(variable.default)) {
      const fileId = `hf-ve-file-${variable.id}`;
      const noteId = `hf-ve-note-${variable.id}`;
      const receive = file => {
        if (!file) return;
        file.text().then(text => {
          const {d, shapes} = svgToPathData(text, variable.default);
          onChange(d);
          onNote({
            tone: "ok",
            message: `${file.name}: ${shapes} shape${shapes === 1 ? "" : "s"} scaled to fit.`
          });
        }).catch(error => onNote({
          tone: "error",
          message: error.message
        }));
      };
      return <div className="hf-ve-drop" onDragOver={event => {
        event.preventDefault();
        event.currentTarget.dataset.over = "true";
      }} onDragLeave={event => {
        event.currentTarget.dataset.over = "false";
      }} onDrop={event => {
        event.preventDefault();
        event.currentTarget.dataset.over = "false";
        receive(event.dataTransfer.files[0]);
      }}>
          {}
          <div className="hf-ve-dropzone">
            <button type="button" className="hf-ve-btn hf-ve-tint" onClick={() => document.getElementById(fileId).click()}>
              Import SVG
            </button>
            <input id={fileId} type="file" accept=".svg,image/svg+xml" className="hf-ve-file" tabIndex={-1} aria-hidden="true" onChange={event => {
        receive(event.target.files[0]);
        event.target.value = "";
      }} />
            {}
            <p id={noteId} role="status" className="hf-ve-note" data-tone={note ? note.tone : ""}>
              {note ? note.message : "Or drop one here. Scaled to fit and centred."}
            </p>
          </div>
          <details className="hf-ve-advanced">
            <summary>Path data</summary>
            <input type="text" className="hf-ve-field hf-ve-mono hf-ve-tint" value={value} aria-label={variable.label ?? variable.id} onChange={e => onChange(e.target.value)} onFocus={() => onTyping(variable.id)} onBlur={() => onTyping(null)} onKeyDown={e => {
        if (e.key === "Enter") e.currentTarget.blur();
      }} />
          </details>
        </div>;
    }
    return <input type="text" className="hf-ve-field hf-ve-tint" value={value} aria-label={variable.label ?? variable.id} onChange={e => onChange(e.target.value)} onFocus={() => onTyping(variable.id)} onBlur={() => onTyping(null)} onKeyDown={e => {
      if (e.key === "Enter") e.currentTarget.blur();
    }} />;
  };
  const variablesKey = JSON.stringify(variables);
  const defaults = useMemo(() => {
    const built = {};
    for (const v of variables) if (v.default !== undefined) built[v.id] = v.default;
    return built;
  }, [variablesKey]);
  const urlKey = `vars-${compositionId}`;
  const readFromUrl = () => {
    if (typeof window === "undefined") return {};
    try {
      const raw = new URLSearchParams(window.location.search).get(urlKey);
      if (!raw) return {};
      const parsed = JSON.parse(raw);
      if (!parsed || typeof parsed !== "object" || Array.isArray(parsed)) return {};
      const declared = new Set(variables.map(v => v.id));
      return Object.fromEntries(Object.entries(parsed).filter(([id]) => declared.has(id)));
    } catch {
      return {};
    }
  };
  const [values, setValues] = useState(() => ({
    ...defaults,
    ...readFromUrl()
  }));
  useEffect(() => {
    const fromUrl = readFromUrl();
    if (Object.keys(fromUrl).length > 0) setValues(current => ({
      ...current,
      ...fromUrl
    }));
  }, []);
  useEffect(() => {
    if (typeof window === "undefined") return;
    const changed = Object.fromEntries(Object.entries(values).filter(([id, value]) => JSON.stringify(value) !== JSON.stringify(defaults[id])));
    const url = new URL(window.location.href);
    if (Object.keys(changed).length === 0) url.searchParams.delete(urlKey); else url.searchParams.set(urlKey, JSON.stringify(changed));
    const next = url.toString();
    if (next !== window.location.href) {
      window.history.replaceState(null, "", next);
      window.dispatchEvent(new CustomEvent("hf-vars-changed"));
    }
  }, [values, defaults, urlKey]);
  const [notes, setNotes] = useState({});
  const [typing, setTyping] = useState(null);
  const posted = useRef(null);
  const frame = useRef(null);
  const bootstrap = ["<!doctype html><html><head><meta charset='utf-8'>", "<style>html,body{margin:0;height:100%;overflow:hidden;background:transparent}", "hyperframes-player{display:block;width:100%;height:100%}</style>", '<script src="https://cdn.jsdelivr.net/npm/@hyperframes/player@latest/dist/hyperframes-player.global.js"></' + "script>", "</head><body><script>", "(function(){", `  var PAYLOAD = ${JSON.stringify(previewSrc)};`, `  var INITIAL = ${JSON.stringify({
    ...defaults,
    ...readFromUrl()
  })};`, "  var html = null, player = null, poll = null;", "  function withValues(source, values) {", "    var json = JSON.stringify(values);", "    var attr = json.replace(/'/g, '&#39;');", "    var out = source.replace(/\\sdata-variable-values=(?:\"[^\"]*\"|'[^']*')/gi, '');", "    out = out.replace(/(data-composition-src=)/gi, \"data-variable-values='\" + attr + \"' $1\");", "    var tag = '<' + 'script>window.__hfVariables=' + json + ';<' + '/script>';", "    return /<head[^>]*>/i.test(out)", "      ? out.replace(/<head([^>]*)>/i, '<head$1>' + tag)", "      : tag + out;", "  }", "  function arm(resumeAt) {", "    clearInterval(poll);", "    var last = -1, tries = 0, seeked = false;", "    poll = setInterval(function () {", "      if (player.ready) {", "        if (!seeked) { seeked = true; if (resumeAt > 0) player.seek(resumeAt); }", "        player.play();", "      }", "      if (seeked && player.currentTime > 0 && player.currentTime !== last) {", "        clearInterval(poll); return;", "      }", "      last = player.currentTime;", "      if (++tries > 150) clearInterval(poll);", "    }, 100);", "  }", "  function mount(values, resumeAt) {", "    if (html === null) return;", "    player.setAttribute('srcdoc', withValues(html, values));", "    arm(resumeAt || 0);", "  }", "  player = document.createElement('hyperframes-player');", "  player.setAttribute('controls', ''); player.setAttribute('muted', '');", "  document.body.appendChild(player);", "  player.addEventListener('ended', function () { player.seek(0); player.play(); });", "  fetch(PAYLOAD).then(function (r) { return r.json(); }).then(function (d) {", "    html = d.html; mount(INITIAL, 0);", "  }).catch(function (e) {", "    document.body.innerHTML = '<pre style=\"color:#f66;font:12px monospace;padding:12px\">preview unavailable: ' + e + '</pre>';", "  });", "  addEventListener('message', function (event) {", "    var values = event.data && event.data.hfVariables;", "    if (!values) return;", "    mount(values, player.currentTime || 0);", "  });", "})();", "</" + "script></body></html>"].join("");
  useEffect(() => {
    if (typing !== null) return;
    const payload = JSON.stringify(values);
    if (payload === posted.current) return;
    const timer = setTimeout(() => {
      const target = frame.current && frame.current.contentWindow;
      if (!target) return;
      posted.current = payload;
      target.postMessage({
        hfVariables: values
      }, window.location.origin);
    }, 150);
    return () => clearTimeout(timer);
  }, [values, typing]);
  const printed = JSON.stringify(values, null, 2).split("\n").join("\n  ");
  const attributes = [["data-composition-id", `"${compositionId}"`], ["data-composition-src", `"${compositionSrc}"`], ["data-variable-values", `'${printed}'`]];
  const snippetLines = [[[SHIKI.punct, "<"], [SHIKI.tag, "div"]]];
  for (const [name, literal] of attributes) {
    const [head, ...rest] = literal.split("\n");
    snippetLines.push([[SHIKI.attr, `  ${name}`], [SHIKI.equals, "="], [SHIKI.value, head]]);
    for (const line of rest) snippetLines.push([[SHIKI.value, line]]);
  }
  snippetLines.push([[SHIKI.punct, "></"], [SHIKI.tag, "div"], [SHIKI.punct, ">"]]);
  const dirty = variables.some(v => values[v.id] !== defaults[v.id]);
  const hasTune = variables.length > 0;
  const [tab, setTab] = useState("preview");
  const lines = meta.codeLines;
  const TABS = [["preview", "Preview"], ...hasCode ? [["code", "Code", lines ? `${lines} ln` : ""]] : [], ["install", "Snippet"], ["docs", "Docs"]];
  const changedValues = () => {
    const changed = {};
    for (const v of variables) {
      if (JSON.stringify(values[v.id]) !== JSON.stringify(defaults[v.id])) changed[v.id] = values[v.id];
    }
    return changed;
  };
  const renderCommand = (() => {
    const changed = changedValues();
    const vars = Object.keys(changed).length ? ` --variables '${JSON.stringify(changed).replace(/'/g, "'\\''")}'` : "";
    return `# Run from the installed project's root.\nnpx hyperframes render --composition '${compositionSrc}'${vars}`;
  })();
  const agentRequest = (() => {
    const changed = changedValues();
    const base = `Install the HyperFrames catalog item "${compositionId}" (${title || compositionId}) into my project with \`npx hyperframes add ${compositionId}\`, mount it at the point of my composition where it should play, and verify with \`npx hyperframes check\`.`;
    const set = Object.entries(changed).map(([id, value]) => `${id} = ${JSON.stringify(value)}`);
    return set.length ? `${base} Set ${set.join(", ")}; keep the other variables at their defaults.` : `${base} Keep the default variables unless I say otherwise.`;
  })();
  const [copiedKey, setCopiedKey] = useState("");
  const copy = async (key, text) => {
    let ok = false;
    try {
      await navigator.clipboard.writeText(text);
      ok = true;
    } catch {
      const area = document.createElement("textarea");
      area.value = text;
      area.setAttribute("readonly", "");
      area.style.cssText = "position:fixed;opacity:0";
      document.body.appendChild(area);
      area.select();
      ok = document.execCommand("copy");
      area.remove();
    }
    if (!ok) return;
    setCopiedKey(key);
    setTimeout(() => setCopiedKey(current => current === key ? "" : current), 1400);
  };
  const CopyAction = ({id, label, text, primary}) => {
    const shown = copiedKey === id ? "Copied" : label;
    return <button type="button" className="hf-ve-action" data-primary={primary ? "true" : "false"} onClick={() => copy(id, typeof text === "function" ? text() : text)}>
        {[label, "Copied"].map(name => <span key={name} className="hf-ve-action-label" data-shown={String(name === shown)}>
            {name}
          </span>)}
      </button>;
  };
  const wiring = snippetLines.map(tokens => tokens.map(([, text]) => text).join("")).join("\n");
  const mountText = `${wiring}\n`;
  const flagNotice = needsFlag ? <div className="flex aspect-video w-full items-center justify-center text-sm text-zinc-500">
      Needs <code>chrome://flags/#{needsFlag}</code> to render live
    </div> : null;
  const player = <iframe ref={frame} srcDoc={bootstrap} className="hf-ve-preview block aspect-video w-full" title={`${compositionId} preview`} />;
  const recordedRef = useRef(null);
  const [reduced, setReduced] = useState(() => typeof window !== "undefined" && window.matchMedia("(prefers-reduced-motion: reduce)").matches);
  useEffect(() => {
    const query = window.matchMedia("(prefers-reduced-motion: reduce)");
    const onChange = event => setReduced(event.matches);
    query.addEventListener("change", onChange);
    return () => query.removeEventListener("change", onChange);
  }, []);
  useEffect(() => {
    const clip = recordedRef.current;
    if (!reduced || !clip) return;
    clip.pause();
    clip.removeAttribute("src");
    clip.load();
  }, [reduced]);
  const recorded = video ? <video ref={recordedRef} className="block aspect-video w-full object-cover" src={reduced ? undefined : video} poster={poster} autoPlay={!reduced} muted loop={!reduced} playsInline /> : null;
  const [hasAdapter, setHasAdapter] = useState(null);
  const hasWebgpuAdapter = (gpu, timeoutMs) => {
    const probe = new Promise(resolve => resolve(gpu?.requestAdapter())).then(adapter => Boolean(adapter), () => false);
    const timeout = new Promise(resolve => setTimeout(resolve, timeoutMs, false));
    return Promise.race([probe, timeout]);
  };
  useEffect(() => {
    if (webgpu) hasWebgpuAdapter(navigator.gpu, 3000).then(setHasAdapter);
  }, [webgpu]);
  const adapterMissing = webgpu && hasAdapter === false;
  const tunePanel = hasTune && !(webgpu && hasAdapter !== true);
  let webgpuStage = player;
  if (webgpu && hasAdapter === null) webgpuStage = <div className="aspect-video w-full" />;
  if (adapterMissing) webgpuStage = recorded;
  const stageNode = webgpu ? webgpuStage : (recorded ?? flagNotice) ?? player;
  let caption = "Live composition · HyperFrames Player";
  if (adapterMissing) caption = "Recorded preview · live playback needs WebGPU, which this browser does not offer"; else if (!webgpu && (video || needsFlag)) caption = "Recorded preview";
  const slotOf = node => {
    for (let cur = node; React.isValidElement(cur); cur = React.Children.toArray(cur.props.children)[0]) {
      if (cur.props.slot) return cur.props.slot;
    }
    return null;
  };
  const allSlots = React.Children.toArray(children);
  const installSlot = allSlots.find(child => slotOf(child) === "install") ?? null;
  const otherSlots = allSlots.filter(child => child !== installSlot);
  const seconds = meta.duration ? `${meta.duration} s` : null;
  const size = meta.width && meta.height ? `${meta.width}×${meta.height}` : null;
  return <div className="hf-ve my-4">
      <style dangerouslySetInnerHTML={{
    __html: CSS
  }} />

      <div className="not-prose">
        <header className="hf-ve-head-title">
          <h1>{title}</h1>
          {description && <p>{description}</p>}
        </header>
      </div>

      {installSlot && <div className="hf-ve-install">
          <h2 className="hf-ve-install-title">Install</h2>
          {installSlot}
        </div>}

      <div className="not-prose">

        <div className="hf-ve-bar">
          <div className="hf-ve-meta">
            {seconds && <span>
                <b>{seconds}</b> duration
              </span>}
            {size && <b>{size}</b>}
            {hasTune && <span>
                <b>{variables.length}</b> {variables.length === 1 ? "variable" : "variables"}
              </span>}
            {meta.category && <b>{meta.category}</b>}
            {meta.badge && <span className="hf-ve-badge">{meta.badge}</span>}
          </div>
          <div className="hf-ve-actions">
            <CopyAction id="agent" label="Copy agent request" text={agentRequest} primary />
            <CopyAction id="wiring" label="Copy wiring" text={mountText} />
            <CopyAction id="link" label="Copy link" text={() => window.location.href} />
            {rawUrl && <a className="hf-ve-action" href={rawUrl} target="_blank" rel="noopener noreferrer">
                Raw
              </a>}
          </div>
        </div>

        <div className="hf-ve-main" data-tune={tunePanel ? "true" : "false"}>
          <div className="hf-ve-stage">
            {stageNode}
            <div className="hf-ve-caption">
              {(seconds || size) && <span>{[seconds, size && `${size} preview`].filter(Boolean).join(" · ")}</span>}
              <span>{caption}</span>
            </div>
          </div>

          {tunePanel && <aside className="hf-ve-tune" aria-label="Tune">
              <div className="hf-ve-tune-inner">
                <div className="hf-ve-tune-head">
                  Tune <small>{variables.length} {variables.length === 1 ? "variable" : "variables"}</small>
                </div>
                <TuneList variables={variables} values={values} notes={notes} onValues={setValues} onNotes={setNotes} onTyping={setTyping} control={control} readout={readout} />
                <div className="hf-ve-tune-foot">
                  <button type="button" onClick={() => {
    setValues(defaults);
    setNotes({});
  }} disabled={!dirty} className="hf-ve-action">
                    Reset
                  </button>
                  <CopyAction id="json" label="Copy JSON" text={() => JSON.stringify(dirty ? changedValues() : defaults, null, 2)} />
                  <CopyAction id="render" label="Copy render cmd" text={renderCommand} />
                </div>
              </div>
            </aside>}
        </div>

        <div className="hf-ve-tabs hf-ve-tabs-row" role="tablist">
          {TABS.map(([id, label, note]) => <button key={id} type="button" role="tab" data-on={tab === id} aria-selected={tab === id} onClick={() => setTab(id)} className="hf-ve-tab hf-ve-tint">
              {label}
              {note ? <small>{note}</small> : null}
            </button>)}
        </div>
      </div>

      <div className="hf-ve-body">
        {}
        <div className="hf-ve-slots" data-tab={tab}>
          {otherSlots}
        </div>
        <div className="hf-ve-body-pane hf-ve-about not-prose" hidden={tab !== "preview"}>
          <h3>About</h3>
          {about && <p>{about}</p>}
          {attribution && <p className="hf-ve-attr">
              {attribution.author ? <>
                  Created by{" "}
                  {attribution.authorUrl ? <a href={attribution.authorUrl} target="_blank" rel="noopener noreferrer">
                      {attribution.author}
                    </a> : attribution.author}{" "}
                  ·{" "}
                </> : null}
              Registry item{" "}
              <a href={`https://github.com/heygen-com/hyperframes/tree/main/${attribution.path}`} target="_blank" rel="noopener noreferrer">
                heygen-com/hyperframes
              </a>{" "}
              · <code>{attribution.path}</code>
              {attribution.tags.length > 0 ? ` · ${attribution.tags.join(", ")}` : ""}
            </p>}
        </div>
        <div className="hf-ve-body-pane hf-ve-snippet not-prose" hidden={tab !== "install"}>
          {}
          <CodeBlock filename="index.html">
            <pre className="shiki shiki-themes github-light-default dark-plus" style={{
    backgroundColor: "rgb(255, 255, 255)",
    "--shiki-dark-bg": "#0B0C0E",
    color: "rgb(31, 35, 40)",
    "--shiki-dark": "#D4D4D4"
  }}>
              <code>
                {snippetLines.map((tokens, line) => <span key={line} className="line">
                    {tokens.map(([style, text], token) => <span key={token} style={style}>
                        {text}
                      </span>)}
                    {"\n"}
                  </span>)}
              </code>
            </pre>
          </CodeBlock>
        </div>
      </div>
    </div>;
};

<CatalogDetail compositionId="vfx-shatter" compositionSrc="compositions/vfx-shatter.html" title="Shatter" description="VFX composition block" variables={[]} meta={{"duration":12,"width":1920,"height":1080,"category":"HTML-in-Canvas","badge":"Experimental","codeLines":1156}} attribution={{"path":"registry/blocks/vfx-shatter","tags":["html-in-canvas","webgl"]}} video="https://static.heygen.ai/hyperframes-oss/docs/images/catalog/blocks/vfx-shatter.mp4" poster="https://static.heygen.ai/hyperframes-oss/docs/images/catalog/blocks/vfx-shatter.png" hasCode rawUrl="https://raw.githubusercontent.com/heygen-com/hyperframes/main/registry/blocks/vfx-shatter/vfx-shatter.html">
  <CatalogSlot slot="code">
    ```html vfx-shatter.html theme={null}
    <!doctype html>
    <html lang="en">
      <head>
        <meta charset="utf-8" />
        <meta name="viewport" content="width=1920, height=1080" />
        <title>HTML Glass Shatter</title>
        <link
          href="https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap"
          rel="stylesheet"
        />
        <script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
        <script src="https://cdn.jsdelivr.net/npm/three@0.147.0/build/three.min.js"></script>
        <style>
          *,
          *::before,
          *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
          }
          body {
            background: #000;
            overflow: hidden;
            font-family: "Inter", system-ui, sans-serif;
          }

          #root {
            position: relative;
            width: 1920px;
            height: 1080px;
            overflow: hidden;
            background: #06080d;
          }

          #scene-canvas {
            position: absolute;
            top: 0;
            left: 0;
            width: 1920px;
            height: 1080px;
          }

          .panel {
            position: absolute;
            top: 0;
            left: 0;
            overflow: hidden;
            color: #fff;
          }

          /* ── Panel A: Write HTML, Render Video ─────────────────────────── */
          .panel-a-inner {
            width: 100%;
            height: 100%;
            background: linear-gradient(160deg, #0a0c14 0%, #0d1117 40%, #111820 100%);
            display: flex;
            flex-direction: column;
            padding: 80px 120px;
            gap: 0;
            position: relative;
            overflow: hidden;
          }
          .panel-a-inner::before {
            content: "";
            position: absolute;
            top: -200px;
            right: -200px;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(56, 189, 248, 0.06) 0%, transparent 70%);
            pointer-events: none;
          }
          .panel-a-inner::after {
            content: "";
            position: absolute;
            bottom: -150px;
            left: -150px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.05) 0%, transparent 70%);
            pointer-events: none;
          }

          .pa-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            background: rgba(56, 189, 248, 0.08);
            border: 1px solid rgba(56, 189, 248, 0.15);
            border-radius: 100px;
            font-size: 14px;
            font-weight: 600;
            color: #38bdf8;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            width: fit-content;
            margin-bottom: 40px;
          }
          .pa-badge-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #38bdf8;
          }

          .pa-headline {
            font-size: 88px;
            font-weight: 800;
            letter-spacing: -3px;
            line-height: 1;
            color: #f0f4f8;
            margin-bottom: 48px;
            max-width: 1100px;
          }
          .pa-headline em {
            font-style: normal;
            color: #38bdf8;
          }

          .pa-chart {
            display: flex;
            align-items: flex-end;
            gap: 40px;
            margin-bottom: 56px;
          }
          .pa-chart-group {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
          }
          .pa-chart-bars {
            display: flex;
            align-items: flex-end;
            gap: 8px;
            height: 160px;
          }
          .pa-bar {
            width: 64px;
            border-radius: 6px 6px 0 0;
          }
          .pa-bar-v1 {
            height: 60px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.06);
          }
          .pa-bar-v2 {
            height: 150px;
            background: linear-gradient(to top, #38bdf8, #818cf8);
          }
          .pa-chart-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.4);
            font-weight: 500;
          }
          .pa-chart-sublabel {
            font-size: 13px;
            font-weight: 600;
          }
          .pa-chart-sublabel.dim {
            color: rgba(255, 255, 255, 0.25);
          }
          .pa-chart-sublabel.lit {
            color: #38bdf8;
          }

          .pa-features {
            display: flex;
            gap: 32px;
            margin-bottom: 56px;
          }
          .pa-feature {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            flex: 1;
          }
          .pa-feature-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(56, 189, 248, 0.08);
            border: 1px solid rgba(56, 189, 248, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
            color: #38bdf8;
          }
          .pa-feature-text h3 {
            font-size: 16px;
            font-weight: 600;
            color: #e2e8f0;
            margin-bottom: 4px;
          }
          .pa-feature-text p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.35);
            line-height: 1.5;
          }

          .pa-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 40px;
            background: linear-gradient(135deg, #38bdf8, #818cf8);
            border-radius: 12px;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            border: none;
            width: fit-content;
            letter-spacing: -0.3px;
          }

          /* ── Panel B: Welcome to v2.0 ──────────────────────────── */
          .panel-b-inner {
            width: 100%;
            height: 100%;
            background: linear-gradient(160deg, #0a0f1a 0%, #0c1220 50%, #0f1628 100%);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 80px 120px;
            gap: 48px;
            position: relative;
            overflow: hidden;
          }

          .pb-confetti {
            position: absolute;
            inset: 0;
            overflow: hidden;
            pointer-events: none;
          }
          .pb-dot {
            position: absolute;
            border-radius: 50%;
            opacity: 0.12;
          }

          .pb-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            background: rgba(52, 211, 153, 0.08);
            border: 1px solid rgba(52, 211, 153, 0.2);
            border-radius: 100px;
            font-size: 15px;
            font-weight: 600;
            color: #34d399;
            letter-spacing: 1px;
          }

          .pb-headline {
            font-size: 80px;
            font-weight: 800;
            letter-spacing: -3px;
            color: #f0f4f8;
            text-align: center;
          }

          .pb-metrics {
            display: flex;
            gap: 48px;
          }
          .pb-metric {
            text-align: center;
            padding: 32px 48px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 16px;
            min-width: 220px;
          }
          .pb-metric-value {
            font-size: 52px;
            font-weight: 800;
            letter-spacing: -2px;
            margin-bottom: 8px;
          }
          .pb-metric-value.green {
            color: #34d399;
          }
          .pb-metric-value.blue {
            color: #38bdf8;
          }
          .pb-metric-value.purple {
            color: #a78bfa;
          }
          .pb-metric-label {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.4);
            font-weight: 500;
          }

          .pb-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 40px;
            background: linear-gradient(135deg, #34d399, #38bdf8);
            border-radius: 12px;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            border: none;
            letter-spacing: -0.3px;
          }

          /* ── Error Overlay ─────────────────────────────────────── */
          #error-overlay {
            position: absolute;
            inset: 0;
            background: #06080d;
            display: none;
            align-items: center;
            justify-content: center;
            z-index: 100;
            flex-direction: column;
            gap: 16px;
          }
          #error-overlay.visible {
            display: flex;
          }
          #error-overlay h2 {
            font-size: 24px;
            color: #f0f4f8;
            font-weight: 600;
          }
          #error-overlay p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
            max-width: 480px;
            text-align: center;
            line-height: 1.6;
          }
          #error-overlay code {
            background: rgba(255, 255, 255, 0.1);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 13px;
          }
        </style>
      </head>
      <body>
        <div
          id="root"
          data-composition-id="glass-shatter"
          data-width="1920"
          data-height="1080"
          data-start="0"
          data-duration="12"
          data-root="true"
        >
          <!-- Capture canvas: Panel A -->
          <canvas
            id="cap-a"
            layoutsubtree
            width="1920"
            height="1080"
            style="
              position: absolute;
              top: 0;
              left: 0;
              width: 1920px;
              height: 1080px;
              z-index: -1;
              pointer-events: none;
            "
          >
            <section class="panel" id="panel-a" data-panel-a style="width: 1920px; height: 1080px">
              <div class="panel-a-inner">
                <div class="pa-badge">
                  <span class="pa-badge-dot"></span>
                  Write HTML, Render Video
                </div>

                <h1 class="pa-headline">Everything you loved.<br /><em>Now 10x faster.</em></h1>

                <div class="pa-chart">
                  <div class="pa-chart-group">
                    <div class="pa-chart-bars">
                      <div class="pa-bar pa-bar-v1"></div>
                      <div class="pa-bar pa-bar-v2"></div>
                    </div>
                    <div class="pa-chart-label">Render Speed</div>
                    <div style="display: flex; gap: 16px">
                      <span class="pa-chart-sublabel dim">v1</span>
                      <span class="pa-chart-sublabel lit">v2</span>
                    </div>
                  </div>
                  <div class="pa-chart-group">
                    <div class="pa-chart-bars">
                      <div class="pa-bar pa-bar-v1" style="height: 90px"></div>
                      <div class="pa-bar pa-bar-v2" style="height: 145px"></div>
                    </div>
                    <div class="pa-chart-label">Throughput</div>
                    <div style="display: flex; gap: 16px">
                      <span class="pa-chart-sublabel dim">v1</span>
                      <span class="pa-chart-sublabel lit">v2</span>
                    </div>
                  </div>
                  <div class="pa-chart-group">
                    <div class="pa-chart-bars">
                      <div class="pa-bar pa-bar-v1" style="height: 110px"></div>
                      <div class="pa-bar pa-bar-v2" style="height: 155px"></div>
                    </div>
                    <div class="pa-chart-label">Reliability</div>
                    <div style="display: flex; gap: 16px">
                      <span class="pa-chart-sublabel dim">v1</span>
                      <span class="pa-chart-sublabel lit">v2</span>
                    </div>
                  </div>
                </div>

                <div class="pa-features">
                  <div class="pa-feature">
                    <div class="pa-feature-icon">&#9889;</div>
                    <div class="pa-feature-text">
                      <h3>Instant Deploys</h3>
                      <p>Zero-downtime rollouts in under 3 seconds globally.</p>
                    </div>
                  </div>
                  <div class="pa-feature">
                    <div class="pa-feature-icon">&#128274;</div>
                    <div class="pa-feature-text">
                      <h3>End-to-End Encryption</h3>
                      <p>AES-256 at rest, TLS 1.3 in transit. SOC2 certified.</p>
                    </div>
                  </div>
                  <div class="pa-feature">
                    <div class="pa-feature-icon">&#128200;</div>
                    <div class="pa-feature-text">
                      <h3>Real-time Analytics</h3>
                      <p>Sub-second queries across billions of events.</p>
                    </div>
                  </div>
                </div>

                <button class="pa-cta">Start Creating &rarr;</button>
              </div>
            </section>
          </canvas>

          <!-- Capture canvas: Panel B -->
          <canvas
            id="cap-b"
            layoutsubtree
            width="1920"
            height="1080"
            style="
              position: absolute;
              top: 0;
              left: 0;
              width: 1920px;
              height: 1080px;
              z-index: -1;
              pointer-events: none;
            "
          >
            <section class="panel" id="panel-b" data-panel-b style="width: 1920px; height: 1080px">
              <div class="panel-b-inner">
                <div class="pb-confetti" id="confetti-container"></div>

                <div class="pb-badge">&#10003; Powered by HyperFrames</div>

                <h1 class="pb-headline">HTML is Video</h1>

                <div class="pb-metrics">
                  <div class="pb-metric">
                    <div class="pb-metric-value green">10x</div>
                    <div class="pb-metric-label">Render Speed</div>
                  </div>
                  <div class="pb-metric">
                    <div class="pb-metric-value blue">50%</div>
                    <div class="pb-metric-label">File Size</div>
                  </div>
                  <div class="pb-metric">
                    <div class="pb-metric-value purple">99.99%</div>
                    <div class="pb-metric-label">Reliability</div>
                  </div>
                </div>

                <button class="pb-cta">View Catalog &rarr;</button>
              </div>
            </section>
          </canvas>

          <!-- Three.js render target -->
          <canvas id="scene-canvas" width="1920" height="1080"></canvas>

          <!-- Error overlay -->
          <div id="error-overlay">
            <h2>HTML-in-Canvas Required</h2>
            <p>
              This composition requires the experimental CanvasDrawElement API. Enable it in Chrome or
              Brave:
            </p>
            <p><code>chrome://flags/#canvas-draw-element</code></p>
          </div>

          <!-- Driver clip -->
          <div
            id="driver"
            class="clip"
            data-start="0"
            data-duration="12"
            data-track-index="0"
            style="position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none"
          ></div>
        </div>

        <script>
          var W = 1920,
            H = 1080;
          var DURATION = 12;
          var SHARD_COUNT = 200;
          var CRACK_START = 2.0;
          var CRACK_END = 4.0;
          var SHATTER_START = 4.0;
          var SHATTER_SETTLE = 10.0;

          // ── Feature Detection ──────────────────────────────────────────────
          function isSupported() {
            if (!("layoutSubtree" in document.createElement("canvas"))) return false;
            var tc = document.createElement("canvas");
            tc.setAttribute("layoutsubtree", "");
            var ctx = tc.getContext("2d");
            return ctx && typeof ctx.drawElementImage === "function";
          }

          if (!isSupported()) {
            document.getElementById("error-overlay").classList.add("visible");
          }

          // ── Seeded PRNG (mulberry32, seed 42) ──────────────────────────────
          function mulberry32(seed) {
            return function () {
              seed |= 0;
              seed = (seed + 0x6d2b79f5) | 0;
              var t = Math.imul(seed ^ (seed >>> 15), 1 | seed);
              t = (t + Math.imul(t ^ (t >>> 7), 61 | t)) ^ t;
              return ((t ^ (t >>> 14)) >>> 0) / 4294967296;
            };
          }
          var rng = mulberry32(42);

          // ── Generate confetti dots for Panel B ─────────────────────────────
          var confettiEl = document.getElementById("confetti-container");
          if (confettiEl) {
            var dotColors = ["#34d399", "#38bdf8", "#a78bfa", "#f472b6", "#fbbf24"];
            for (var d = 0; d < 60; d++) {
              var dot = document.createElement("div");
              dot.className = "pb-dot";
              var sz = 4 + rng() * 12;
              dot.style.width = sz + "px";
              dot.style.height = sz + "px";
              dot.style.left = rng() * 100 + "%";
              dot.style.top = rng() * 100 + "%";
              dot.style.background = dotColors[Math.floor(rng() * dotColors.length)];
              dot.style.opacity = (0.06 + rng() * 0.12).toFixed(3);
              confettiEl.appendChild(dot);
            }
          }

          // ── Parse capture canvases ─────────────────────────────────────────
          var capA = document.getElementById("cap-a");
          var capB = document.getElementById("cap-b");
          var ctxA = capA.getContext("2d");
          var ctxB = capB.getContext("2d");
          var panelA = document.getElementById("panel-a");
          var panelB = document.getElementById("panel-b");

          function capturePanels() {
            ctxA.clearRect(0, 0, W, H);
            ctxA.drawElementImage(panelA, 0, 0, W, H);
            ctxB.clearRect(0, 0, W, H);
            ctxB.drawElementImage(panelB, 0, 0, W, H);
          }

          // ── Voronoi Shard Generation ───────────────────────────────────────
          // Generate ~200 seed points, compute Voronoi via brute force,
          // triangulate each cell, extract per-shard geometry + UVs.

          // Normalized coordinates: x in [0, aspectRatio], y in [0, 1]
          var aspect = W / H;

          // Generate seed points with weighted density toward center
          var seeds = [];
          for (var s = 0; s < SHARD_COUNT; s++) {
            var sx, sy;
            // 40% of points biased toward center for denser cracking there
            if (s < SHARD_COUNT * 0.4) {
              var angle = rng() * Math.PI * 2;
              var radius = rng() * 0.35;
              sx = 0.5 * aspect + Math.cos(angle) * radius * aspect;
              sy = 0.5 + Math.sin(angle) * radius;
            } else {
              sx = rng() * aspect;
              sy = rng();
            }
            seeds.push({ x: sx, y: sy });
          }

          // For each seed, compute a convex polygon via intersection of half-planes
          // (simplified: sample angles around seed, find nearest boundary)
          function computeShardPolygons(seeds) {
            var shards = [];
            var ANGLES = 32;

            for (var i = 0; i < seeds.length; i++) {
              var cx = seeds[i].x;
              var cy = seeds[i].y;
              var verts = [];

              for (var a = 0; a < ANGLES; a++) {
                var theta = (a / ANGLES) * Math.PI * 2;
                var dx = Math.cos(theta);
                var dy = Math.sin(theta);

                // Find closest bisector intersection along this ray
                var minT = 999;

                for (var j = 0; j < seeds.length; j++) {
                  if (j === i) continue;
                  // Midpoint between seeds i and j
                  var mx = (cx + seeds[j].x) * 0.5;
                  var my = (cy + seeds[j].y) * 0.5;
                  // Normal of bisector: direction from i to j
                  var nx = seeds[j].x - cx;
                  var ny = seeds[j].y - cy;
                  // Ray-plane intersection: t = dot(m - c, n) / dot(d, n)
                  var denom = dx * nx + dy * ny;
                  if (denom <= 0.0001) continue;
                  var t = ((mx - cx) * nx + (my - cy) * ny) / denom;
                  if (t > 0.001 && t < minT) minT = t;
                }

                // Clamp to bounding box
                if (dx > 0) {
                  var tb = (aspect - cx) / dx;
                  if (tb > 0 && tb < minT) minT = tb;
                }
                if (dx < 0) {
                  var tb2 = -cx / dx;
                  if (tb2 > 0 && tb2 < minT) minT = tb2;
                }
                if (dy > 0) {
                  var tb3 = (1 - cy) / dy;
                  if (tb3 > 0 && tb3 < minT) minT = tb3;
                }
                if (dy < 0) {
                  var tb4 = -cy / dy;
                  if (tb4 > 0 && tb4 < minT) minT = tb4;
                }

                if (minT < 998) {
                  verts.push({
                    x: cx + dx * minT,
                    y: cy + dy * minT,
                  });
                }
              }

              if (verts.length < 3) continue;

              // Sort vertices by angle from centroid
              var centX = 0,
                centY = 0;
              for (var v = 0; v < verts.length; v++) {
                centX += verts[v].x;
                centY += verts[v].y;
              }
              centX /= verts.length;
              centY /= verts.length;

              verts.sort(function (a, b) {
                return Math.atan2(a.y - centY, a.x - centX) - Math.atan2(b.y - centY, b.x - centX);
              });

              // Fan triangulation from centroid
              var triangles = [];
              for (var v2 = 0; v2 < verts.length; v2++) {
                var next = (v2 + 1) % verts.length;
                triangles.push([{ x: centX, y: centY }, verts[v2], verts[next]]);
              }

              shards.push({
                seedX: cx,
                seedY: cy,
                centroidX: centX,
                centroidY: centY,
                triangles: triangles,
                verts: verts,
              });
            }

            return shards;
          }

          var shardData = computeShardPolygons(seeds);

          // ── Three.js Scene ─────────────────────────────────────────────────
          var sceneCanvas = document.getElementById("scene-canvas");
          var renderer = new THREE.WebGLRenderer({
            canvas: sceneCanvas,
            antialias: true,
            alpha: false,
            preserveDrawingBuffer: true,
            powerPreference: "high-performance",
          });
          renderer.setSize(W, H, false);
          renderer.setPixelRatio(1);
          renderer.toneMapping = THREE.NoToneMapping;
          renderer.setClearColor(0x06080d, 1);

          var scene = new THREE.Scene();
          var camera = new THREE.OrthographicCamera(-aspect * 0.5, aspect * 0.5, 0.5, -0.5, 0.1, 100);
          camera.position.z = 10;

          // ── Textures from capture canvases ─────────────────────────────────
          var texA = new THREE.CanvasTexture(capA);
          texA.minFilter = THREE.LinearFilter;
          texA.magFilter = THREE.LinearFilter;
          texA.generateMipmaps = false;

          var texB = new THREE.CanvasTexture(capB);
          texB.minFilter = THREE.LinearFilter;
          texB.magFilter = THREE.LinearFilter;
          texB.generateMipmaps = false;

          // ── Phase 1 & 2: Full plane with panel A + crack shader ────────────
          var crackShaderMaterial = new THREE.ShaderMaterial({
            uniforms: {
              tPanel: { value: texA },
              uCrackProgress: { value: 0.0 },
              uAspect: { value: aspect },
              uTime: { value: 0.0 },
            },
            vertexShader: [
              "varying vec2 vUv;",
              "void main() {",
              "  vUv = uv;",
              "  gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);",
              "}",
            ].join("\n"),
            fragmentShader: [
              "uniform sampler2D tPanel;",
              "uniform float uCrackProgress;",
              "uniform float uAspect;",
              "uniform float uTime;",
              "varying vec2 vUv;",
              "",
              "// Hash functions for Voronoi",
              "vec2 hash22(vec2 p) {",
              "  p = vec2(dot(p, vec2(127.1, 311.7)), dot(p, vec2(269.5, 183.3)));",
              "  return fract(sin(p) * 43758.5453);",
              "}",
              "",
              "// Voronoi distance for crack pattern",
              "float voronoi(vec2 p) {",
              "  vec2 ip = floor(p);",
              "  vec2 fp = fract(p);",
              "  float d1 = 8.0;",
              "  float d2 = 8.0;",
              "  for (int x = -1; x <= 1; x++) {",
              "    for (int y = -1; y <= 1; y++) {",
              "      vec2 neighbor = vec2(float(x), float(y));",
              "      vec2 point = hash22(ip + neighbor);",
              "      vec2 diff = neighbor + point - fp;",
              "      float dist = length(diff);",
              "      if (dist < d1) {",
              "        d2 = d1;",
              "        d1 = dist;",
              "      } else if (dist < d2) {",
              "        d2 = dist;",
              "      }",
              "    }",
              "  }",
              "  return d2 - d1;",
              "}",
              "",
              "void main() {",
              "  vec4 color = texture2D(tPanel, vUv);",
              "  ",
              "  if (uCrackProgress <= 0.0) {",
              "    gl_FragColor = color;",
              "    return;",
              "  }",
              "  ",
              "  // Distance from center (in UV space, aspect-corrected)",
              "  vec2 center = vec2(0.5, 0.5);",
              "  vec2 uv_aspect = vec2((vUv.x - 0.5) * uAspect, vUv.y - 0.5);",
              "  float distFromCenter = length(uv_aspect);",
              "  ",
              "  // Crack wavefront: radiates outward based on progress",
              "  float maxRadius = length(vec2(uAspect * 0.5, 0.5));",
              "  float wavefront = uCrackProgress * maxRadius * 1.4;",
              "  ",
              "  if (distFromCenter > wavefront) {",
              "    gl_FragColor = color;",
              "    return;",
              "  }",
              "  ",
              "  // Multi-scale Voronoi for cracks",
              "  vec2 crackUV = vUv * vec2(uAspect, 1.0);",
              "  float v1 = voronoi(crackUV * 8.0);",
              "  float v2 = voronoi(crackUV * 16.0);",
              "  float v3 = voronoi(crackUV * 4.0);",
              "  ",
              "  // Blend scales based on distance from center",
              "  float normalizedDist = distFromCenter / maxRadius;",
              "  float crackPattern = mix(v1, v2, smoothstep(0.0, 0.5, normalizedDist));",
              "  crackPattern = mix(crackPattern, v3, smoothstep(0.3, 0.8, normalizedDist) * 0.4);",
              "  ",
              "  // Crack intensity: thinner = more crack-like",
              "  float crackWidth = 0.04 + uCrackProgress * 0.02;",
              "  float crack = smoothstep(crackWidth, 0.0, crackPattern);",
              "  ",
              "  // Fade in based on wavefront proximity",
              "  float waveFade = smoothstep(wavefront, wavefront * 0.6, distFromCenter);",
              "  crack *= waveFade;",
              "  ",
              "  // Impact point glow",
              "  float impactGlow = exp(-distFromCenter * 6.0) * uCrackProgress * 0.6;",
              "  ",
              "  // Refraction distortion along cracks",
              "  vec2 distortUV = vUv;",
              "  if (crack > 0.1) {",
              "    vec2 offset = (hash22(floor(crackUV * 8.0)) - 0.5) * 0.008 * crack;",
              "    distortUV += offset;",
              "  }",
              "  vec4 distortedColor = texture2D(tPanel, distortUV);",
              "  ",
              "  // Composite: panel + bright crack lines + refraction",
              "  vec3 crackColor = vec3(0.85, 0.92, 1.0);",
              "  vec3 result = mix(distortedColor.rgb, crackColor, crack * 0.7);",
              "  result += vec3(impactGlow * 0.3, impactGlow * 0.4, impactGlow * 0.6);",
              "  ",
              "  // Glass surface highlight along cracks",
              "  float highlight = crack * 0.15 * (1.0 - normalizedDist);",
              "  result += vec3(highlight);",
              "  ",
              "  gl_FragColor = vec4(result, 1.0);",
              "}",
            ].join("\n"),
            transparent: false,
          });

          var fullPlane = new THREE.Mesh(new THREE.PlaneGeometry(aspect, 1), crackShaderMaterial);
          fullPlane.position.set(0, 0, 0);
          scene.add(fullPlane);

          // ── Panel B: static plane behind shards ────────────────────────────
          var panelBMesh = new THREE.Mesh(
            new THREE.PlaneGeometry(aspect, 1),
            new THREE.MeshBasicMaterial({ map: texB, side: THREE.FrontSide }),
          );
          panelBMesh.position.set(0, 0, -0.5);
          panelBMesh.visible = false;
          scene.add(panelBMesh);

          // ── Phase 3: Shard meshes ──────────────────────────────────────────
          // Each shard is a THREE.Mesh with its own geometry from the Voronoi subdivision.
          // UV mapping samples the correct region of panel A's texture.

          var shardMeshes = [];
          var shardPhysics = [];

          for (var si = 0; si < shardData.length; si++) {
            var sd = shardData[si];
            var tris = sd.triangles;

            // Build merged geometry for all triangles in this shard
            var positions = [];
            var uvs = [];

            for (var ti = 0; ti < tris.length; ti++) {
              var tri = tris[ti];
              for (var vi = 0; vi < 3; vi++) {
                // Convert from Voronoi space (x in [0,aspect], y in [0,1]) to mesh space
                var px = tri[vi].x - aspect * 0.5;
                var py = -(tri[vi].y - 0.5); // flip Y for Three.js
                positions.push(px, py, 0);

                // UV: map from Voronoi space to [0,1]
                var u = tri[vi].x / aspect;
                var v = 1.0 - tri[vi].y; // flip V
                uvs.push(u, v);
              }
            }

            if (positions.length < 9) continue;

            var geo = new THREE.BufferGeometry();
            geo.setAttribute("position", new THREE.Float32BufferAttribute(positions, 3));
            geo.setAttribute("uv", new THREE.Float32BufferAttribute(uvs, 2));

            var mat = new THREE.MeshBasicMaterial({
              map: texA,
              side: THREE.DoubleSide,
              transparent: true,
              opacity: 1.0,
            });

            var mesh = new THREE.Mesh(geo, mat);
            mesh.visible = false;
            scene.add(mesh);
            shardMeshes.push(mesh);

            // Physics state for this shard
            // Direction outward from center + random upward kick
            var fromCenterX = sd.centroidX - aspect * 0.5;
            var fromCenterY = sd.centroidY - 0.5;
            var fromCenterLen =
              Math.sqrt(fromCenterX * fromCenterX + fromCenterY * fromCenterY) + 0.001;
            var outDirX = fromCenterX / fromCenterLen;
            var outDirY = fromCenterY / fromCenterLen;

            // Initial velocity: outward + upward component + randomness
            var speed = 0.3 + rng() * 0.7;
            var upKick = 0.2 + rng() * 0.5;

            shardPhysics.push({
              // Centroid in mesh-space for pivot
              cx: sd.centroidX - aspect * 0.5,
              cy: -(sd.centroidY - 0.5),
              // Velocity
              vx: outDirX * speed * (0.5 + rng() * 0.8),
              vy: -outDirY * speed * (0.3 + rng() * 0.6) + upKick,
              vz: (rng() - 0.5) * 0.3,
              // Angular velocity
              rx: (rng() - 0.5) * 4.0,
              ry: (rng() - 0.5) * 4.0,
              rz: (rng() - 0.5) * 6.0,
              // Current state (written by physics step)
              posX: 0,
              posY: 0,
              posZ: 0,
              rotX: 0,
              rotY: 0,
              rotZ: 0,
              opacity: 1.0,
              settled: false,
            });
          }

          // ── Physics Update ─────────────────────────────────────────────────
          var GRAVITY = -2.5;
          var FLOOR_Y = -0.8;
          var DAMPING = 0.6;
          var FRICTION = 0.92;

          function updateShardPhysics(t) {
            // t is time since shatter start (0 at SHATTER_START)
            var dt = 1 / 30; // fixed step for determinism
            var steps = Math.floor(t / dt);

            for (var i = 0; i < shardPhysics.length; i++) {
              var sp = shardPhysics[i];

              // Reset and simulate from zero for determinism
              var px = 0,
                py = 0,
                pz = 0;
              var rx = 0,
                ry = 0,
                rz = 0;
              var vx = sp.vx,
                vy = sp.vy,
                vz = sp.vz;
              var avx = sp.rx,
                avy = sp.ry,
                avz = sp.rz;
              var settled = false;

              for (var step = 0; step < steps && !settled; step++) {
                // Apply gravity
                vy += GRAVITY * dt;

                // Update position
                px += vx * dt;
                py += vy * dt;
                pz += vz * dt;

                // Update rotation
                rx += avx * dt;
                ry += avy * dt;
                rz += avz * dt;

                // Floor collision (relative to shard centroid)
                var worldY = sp.cy + py;
                if (worldY < FLOOR_Y && vy < 0) {
                  py = FLOOR_Y - sp.cy;
                  vy = -vy * DAMPING;
                  vx *= FRICTION;
                  vz *= FRICTION;
                  avx *= FRICTION;
                  avy *= FRICTION;
                  avz *= FRICTION;

                  // Settle if velocity is very small
                  if (Math.abs(vy) < 0.05) {
                    vy = 0;
                    settled = true;
                  }
                }
              }

              sp.posX = px;
              sp.posY = py;
              sp.posZ = pz;
              sp.rotX = rx;
              sp.rotY = ry;
              sp.rotZ = rz;
              sp.settled = settled;

              // Fade out shards at the very end
              var fadeDuration = DURATION - SHATTER_SETTLE;
              var elapsed = t + SHATTER_START;
              if (elapsed > SHATTER_SETTLE) {
                sp.opacity = Math.max(0, 1.0 - (elapsed - SHATTER_SETTLE) / fadeDuration);
              } else {
                sp.opacity = 1.0;
              }
            }
          }

          // ── Render State ───────────────────────────────────────────────────
          var renderState = {
            phase: 0, // 0=clean, 1=cracking, 2=shattered
            crackProgress: 0,
            shardsVisible: false,
            panelBOpacity: 0,
          };

          function renderFrame(time) {
            // Phase determination
            if (time < CRACK_START) {
              renderState.phase = 0;
            } else if (time < SHATTER_START) {
              renderState.phase = 1;
            } else {
              renderState.phase = 2;
            }

            // Capture HTML panels to texture each frame
            capturePanels();
            texA.needsUpdate = true;
            texB.needsUpdate = true;

            if (renderState.phase === 0) {
              // Clean glass: show full plane, no cracks
              fullPlane.visible = true;
              crackShaderMaterial.uniforms.uCrackProgress.value = 0;
              crackShaderMaterial.uniforms.uTime.value = time;
              panelBMesh.visible = false;

              // Hide all shards
              for (var i = 0; i < shardMeshes.length; i++) {
                shardMeshes[i].visible = false;
              }
            } else if (renderState.phase === 1) {
              // Cracking: show full plane with crack shader
              fullPlane.visible = true;
              var crackT = (time - CRACK_START) / (CRACK_END - CRACK_START);
              crackT = Math.max(0, Math.min(1, crackT));
              // Ease in: slow start, accelerating
              crackT = crackT * crackT;
              crackShaderMaterial.uniforms.uCrackProgress.value = crackT;
              crackShaderMaterial.uniforms.uTime.value = time;
              panelBMesh.visible = false;

              for (var i2 = 0; i2 < shardMeshes.length; i2++) {
                shardMeshes[i2].visible = false;
              }
            } else {
              // Shattered: hide full plane, show shards + panel B
              fullPlane.visible = false;
              panelBMesh.visible = true;

              // Panel B fade-in
              var panelBFadeT = Math.min(1, (time - SHATTER_START) / 1.5);
              panelBFadeT = panelBFadeT * panelBFadeT * (3 - 2 * panelBFadeT); // smoothstep
              panelBMesh.material.opacity = panelBFadeT;
              panelBMesh.material.transparent = true;

              // Update shard physics
              var shatterTime = time - SHATTER_START;
              updateShardPhysics(shatterTime);

              // Apply physics to shard meshes
              for (var i3 = 0; i3 < shardMeshes.length; i3++) {
                var sm = shardMeshes[i3];
                var sp = shardPhysics[i3];

                sm.visible = true;

                // Set position: centroid + physics offset
                sm.position.set(sp.posX, sp.posY, sp.posZ + 0.01);
                sm.rotation.set(sp.rotX, sp.rotY, sp.rotZ);

                // Set pivot point to centroid
                sm.position.x +=
                  sp.cx * (1 - Math.cos(sp.rotZ)) + sp.cy * Math.sin(sp.rotZ) - sp.cx + sp.posX;
                sm.position.y +=
                  -sp.cx * Math.sin(sp.rotZ) + sp.cy * (1 - Math.cos(sp.rotZ)) - sp.cy + sp.posY;

                // Simpler: just translate by physics offset, rotate around centroid
                sm.position.set(sp.posX, sp.posY, sp.posZ + 0.01);
                sm.rotation.set(sp.rotX, sp.rotY, sp.rotZ);

                sm.material.opacity = sp.opacity;
                sm.material.transparent = sp.opacity < 1.0;
              }
            }

            renderer.render(scene, camera);
          }

          // ── GSAP Timeline ──────────────────────────────────────────────────
          window.__timelines = window.__timelines || {};
          var tl = gsap.timeline({ paused: true });

          // Driver tween: spans full duration, renders each frame via onUpdate
          var timeProxy = { t: 0 };
          tl.to(
            timeProxy,
            {
              t: DURATION,
              duration: DURATION,
              ease: "none",
              onUpdate: function () {
                renderFrame(timeProxy.t);
              },
            },
            0,
          );

          window.__timelines["glass-shatter"] = tl;

          // ── Deferred Init ──────────────────────────────────────────────────
          setTimeout(function () {
            capturePanels();
            texA.needsUpdate = true;
            texB.needsUpdate = true;
            tl.seek(0);
          }, 0);
        </script>
      </body>
    </html>
    ```
  </CatalogSlot>

  <CatalogSlot slot="install">
    <InstallCommand command="npx hyperframes add vfx-shatter" item="vfx-shatter" />

    That writes one file: `compositions/vfx-shatter.html`.
  </CatalogSlot>

  <CatalogSlot slot="docs">
    <Danger>
      Live preview needs the `chrome://flags/#canvas-draw-element` flag switched on.
      Without it this item's screen renders black. Rendering from the CLI switches
      it on for you. [How it works](/guides/html-in-canvas)
    </Danger>

    ## Add it to your video

    It runs for 12 seconds at 1920×1080. Paste this into your composition:

    ```html index.html theme={null}
    <div
      data-composition-id="vfx-shatter"
      data-composition-src="compositions/vfx-shatter.html"
      data-start="0"
      data-duration="12"
      data-track-index="1"
      data-width="1920"
      data-height="1080"
    ></div>
    ```

    Move it in time with `data-start`. Put it on a different timeline row with
    `data-track-index`. See [data attributes](/concepts/data-attributes) for the rest.

    Tagged `html-in-canvas` `webgl`.

    ## Related topics

    * [Browse the complete Catalog](/catalog)
    * [Add assets and Catalog items in Studio](/studio/assets-and-blocks)
    * [Build a richer composition](/go-further)
  </CatalogSlot>
</CatalogDetail>