Simulated Cursor

<!--
  Simulated Cursor - pointer and click pulse primitive.

  Paste the markup, CSS and script once, then animate .hf-simulated-cursor
  with x/y values in your paused GSAP timeline. Trigger the click pulse by
  scaling/fading .hf-simulated-cursor-pulse.

  Variables. The script reads each one, falls back to the declared default on
  anything missing or invalid, and writes the result as a custom property the
  CSS above consumes. The timeline recipe below is untouched by them: it keeps
  driving the pointer position and the ring scale and fade.

    - size (number 20 to 120, step 2, unit px, default 44): height and width of
      the pointer. The click ring, its offset and its border scale with it, so
      the tip stays anchored at the animated x/y. Values below 20 clamp to 20,
      values above 120 clamp to 120, and anything that is not a number falls
      back to 44.
    - tone (light | dark | accent, default light): pointer fill, outline and
      ring colour. light is the white pointer with a dark outline for dark
      screens, dark flips both for light screens, accent rides --hf-ui-accent.
    - pulse (subtle | standard | bold | none, default standard): weight of the
      click ring. subtle is thin and small, bold thick and wide, none removes
      the ring entirely. The ring stays centred on the same point in every
      case, and it is only on screen while the click animation runs.

  On every default the result is identical to the original: a 44px white
  pointer with a 22px, 2px white ring offset 9px from the tip.
-->

<div
  class="hf-simulated-cursor"
  aria-hidden="true"
  data-composition-variables='[
    {"id": "size", "type": "number", "role": "layout", "label": "Size", "description": "Height and width of the pointer in pixels. The click ring scales with it. Values outside the range clamp to the nearest end and anything that is not a number falls back to 44.", "default": 44, "min": 20, "max": 120, "step": 2, "unit": "px"},
    {"id": "tone", "type": "enum", "role": "style", "label": "Tone", "description": "Pointer fill and click ring colour: light reads on dark screens, dark reads on light ones, accent rides --hf-ui-accent.", "default": "light", "options": [{"value": "light", "label": "Light"}, {"value": "dark", "label": "Dark"}, {"value": "accent", "label": "Accent"}]},
    {"id": "pulse", "type": "enum", "role": "style", "label": "Click ring", "description": "Weight of the ring the click animation expands: subtle is a thin small ring, bold a thick wide one, none removes the ring entirely.", "default": "standard", "options": [{"value": "subtle", "label": "Subtle"}, {"value": "standard", "label": "Standard"}, {"value": "bold", "label": "Bold"}, {"value": "none", "label": "None"}]}
  ]'
>
  <div class="hf-simulated-cursor-pulse"></div>
  <svg viewBox="0 0 24 24" width="44" height="44">
    <path
      d="M3 2.8 20.6 14 12.8 15.5 9 22 3 2.8Z"
      fill="white"
      stroke="rgba(0,0,0,0.45)"
      stroke-width="1.4"
    />
  </svg>
</div>

<style>
  .hf-simulated-cursor {
    position: absolute;
    left: 0;
    top: 0;
    width: calc(44px * var(--hf-cursor-scale, 1));
    height: calc(44px * var(--hf-cursor-scale, 1));
    transform: translate3d(var(--hf-cursor-x, 0px), var(--hf-cursor-y, 0px), 0);
    pointer-events: none;
    z-index: 999;
    filter: drop-shadow(0 8px 18px rgba(0, 0, 0, 0.24));
  }
  .hf-simulated-cursor svg {
    width: 100%;
    height: 100%;
  }
  .hf-simulated-cursor svg path {
    fill: var(--hf-cursor-fill, #ffffff);
    stroke: var(--hf-cursor-edge, rgba(0, 0, 0, 0.45));
  }
  .hf-simulated-cursor-pulse {
    display: var(--hf-cursor-ring-display, block);
    position: absolute;
    left: calc((20px - var(--hf-cursor-ring-size, 22px) / 2) * var(--hf-cursor-scale, 1));
    top: calc((20px - var(--hf-cursor-ring-size, 22px) / 2) * var(--hf-cursor-scale, 1));
    width: calc(var(--hf-cursor-ring-size, 22px) * var(--hf-cursor-scale, 1));
    height: calc(var(--hf-cursor-ring-size, 22px) * var(--hf-cursor-scale, 1));
    border: calc(var(--hf-cursor-ring-width, 2px) * var(--hf-cursor-scale, 1)) solid
      var(--hf-cursor-ring, rgba(255, 255, 255, 0.85));
    border-radius: 999px;
    opacity: 0;
    transform: scale(0.2);
  }
</style>

<script>
  (function () {
    "use strict";

    var vars =
      window.__hyperframes && window.__hyperframes.getVariables
        ? window.__hyperframes.getVariables()
        : {};

    // Unrecognised or out-of-range overrides return to their declared defaults.
    function pick(table, value, fallback) {
      return Object.prototype.hasOwnProperty.call(table, value) ? value : fallback;
    }

    var tones = {
      light: { fill: "#ffffff", edge: "rgba(0, 0, 0, 0.45)", ring: "rgba(255, 255, 255, 0.85)" },
      dark: { fill: "#18181b", edge: "rgba(255, 255, 255, 0.75)", ring: "rgba(24, 24, 27, 0.75)" },
      accent: {
        fill: "var(--hf-ui-accent, #3ce6ac)",
        edge: "rgba(0, 0, 0, 0.45)",
        ring: "var(--hf-ui-accent, #3ce6ac)",
      },
    };
    var pulses = {
      subtle: { size: "18px", width: "1px", display: "block" },
      standard: { size: "22px", width: "2px", display: "block" },
      bold: { size: "28px", width: "3px", display: "block" },
      none: { size: "22px", width: "2px", display: "none" },
    };

    var size = typeof vars.size === "number" ? vars.size : parseFloat(vars.size);
    if (!isFinite(size)) size = 44;
    size = Math.min(120, Math.max(20, size));

    var tone = tones[pick(tones, vars.tone, "light")];
    var pulse = pulses[pick(pulses, vars.pulse, "standard")];

    var roots = document.querySelectorAll(".hf-simulated-cursor");
    for (var i = 0; i < roots.length; i += 1) {
      var root = roots[i];
      root.style.setProperty("--hf-cursor-scale", String(size / 44));
      root.style.setProperty("--hf-cursor-fill", tone.fill);
      root.style.setProperty("--hf-cursor-edge", tone.edge);
      root.style.setProperty("--hf-cursor-ring", tone.ring);
      root.style.setProperty("--hf-cursor-ring-size", pulse.size);
      root.style.setProperty("--hf-cursor-ring-width", pulse.width);
      root.style.setProperty("--hf-cursor-ring-display", pulse.display);
    }
  })();
</script>

<!--
  Timeline integration:

  tl.to(".hf-simulated-cursor", { "--hf-cursor-x": "760px", "--hf-cursor-y": "420px", duration: 0.8, ease: "power2.inOut" }, startTime);
  tl.fromTo(".hf-simulated-cursor-pulse", { opacity: 0.8, scale: 0.2 }, { opacity: 0, scale: 2.4, duration: 0.45, ease: "power2.out" }, startTime + 0.8);
-->