03YouTube privacy-enhanced embed — a badge that recomputes its brightness on a cycle to pulse

<main class="stage">
<section class="panel">
  <div class="frame" id="frame">
    <canvas class="thumb" id="thumb" width="320" height="180" aria-hidden="true"></canvas>
    <div class="playBtn" role="button" aria-label="Play">
      <svg class="playIcon" viewBox="0 0 24 24" aria-hidden="true"><polygon points="7,4 20,12 7,20"></polygon></svg>
    </div>
    <div class="badge" id="badge">
      <div class="badgeGlow" id="badgeGlow"></div>
      <span class="badgeIcon" aria-hidden="true"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 256"><g><path d="M216 96v112a8 8 0 0 1-8 8H48a8 8 0 0 1-8-8V96a8 8 0 0 1 8-8h160a8 8 0 0 1 8 8" opacity=".2"/><path d="M208 80h-32V56a48 48 0 0 0-96 0v24H48a16 16 0 0 0-16 16v112a16 16 0 0 0 16 16h160a16 16 0 0 0 16-16V96a16 16 0 0 0-16-16M96 56a32 32 0 0 1 64 0v24H96Zm112 152H48V96h160zm-68-56a12 12 0 1 1-12-12a12 12 0 0 1 12 12"/></g></svg></span>
      <span class="badgeLabel">No tracking cookies</span>
    </div>
    <div class="scrim">
      <span class="scrimTitle">Tracking-free video embed</span>
    </div>
  </div>
  <div class="readout" id="readout" aria-live="polite">Brightness 50%</div>
</section>
</main>

@use "../../../../site/static/demo-tokens" as *;

@include stage($stage-orange);

.panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: $sp-3;
}

.frame {
  position: relative;
  width: 200px;
  aspect-ratio: 16 / 9;
  border-radius: $r-card;
  overflow: hidden;
  box-shadow: $shadow-raised;
}

.thumb {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.playBtn {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
}

.playIcon {
  width: 34px;
  height: 34px;
  filter: drop-shadow(0 2px 4px rgba(23, 20, 26, .4));

  polygon {
    fill: $subject-cream;
  }
}

.badge {
  position: absolute;
  top: $sp-2;
  right: $sp-2;
  display: inline-flex;
  align-items: center;
  gap: $sp-1;
  padding: $sp-1 $sp-2;
  border-radius: $r-pill;
  background: $subject-blue-deep;
  overflow: hidden;
}

.badgeGlow {
  position: absolute;
  inset: 0;
  background: $subject-cream;
  opacity: .1;
  pointer-events: none;
}

.badgeIcon {
  position: relative;
  display: block;
  width: 12px;
  height: 12px;

  svg {
    display: block;
    width: 100%;
    height: 100%;
  }

  path {
    fill: $subject-cream;
  }
}

.badgeLabel {
  position: relative;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  font-weight: 600;
  font-size: 9px;
  line-height: 1.3;
  color: $subject-cream;
}

.scrim {
  position: absolute;
  inset: auto 0 0 0;
  padding: $sp-2 $sp-3;
  background: rgba(23, 20, 26, .66);
}

.scrimTitle {
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  font-weight: 600;
  font-size: 11px;
  line-height: 1.3;
  color: $subject-cream;
  opacity: .96;
}

.readout {
  display: inline-flex;
  align-items: center;
  padding: $sp-1 $sp-3;
  border-radius: $r-pill;
  background: $subject-cream;
  color: $subject-ink;
  font-family: "Space Mono", ui-monospace, monospace;
  font-weight: 700;
  font-size: 12px;
  line-height: 1.3;
}

@media (max-width: 340px) {
  .frame { width: 140px; }
  .playIcon { width: 24px; height: 24px; }
  .badgeIcon { width: 10px; height: 10px; }
  .badgeLabel { font-size: 8px; }
  .scrimTitle { font-size: 10px; }
  .readout { font-size: 11px; }
}

@media (prefers-reduced-motion: reduce) {
  .badge { transition: none; }
}

html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ff4d1f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.frame {
  position: relative;
  width: 200px;
  aspect-ratio: 16/9;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
}

.thumb {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.playBtn {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
}

.playIcon {
  width: 34px;
  height: 34px;
  filter: drop-shadow(0 2px 4px rgba(23, 20, 26, 0.4));
}
.playIcon polygon {
  fill: #fff7e6;
}

.badge {
  position: absolute;
  top: 8px;
  right: 8px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  border-radius: 999px;
  background: #0a4fe8;
  overflow: hidden;
}

.badgeGlow {
  position: absolute;
  inset: 0;
  background: #fff7e6;
  opacity: 0.1;
  pointer-events: none;
}

.badgeIcon {
  position: relative;
  display: block;
  width: 12px;
  height: 12px;
}
.badgeIcon svg {
  display: block;
  width: 100%;
  height: 100%;
}
.badgeIcon path {
  fill: #fff7e6;
}

.badgeLabel {
  position: relative;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  font-weight: 600;
  font-size: 9px;
  line-height: 1.3;
  color: #fff7e6;
}

.scrim {
  position: absolute;
  inset: auto 0 0 0;
  padding: 8px 12px;
  background: rgba(23, 20, 26, 0.66);
}

.scrimTitle {
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  font-weight: 600;
  font-size: 11px;
  line-height: 1.3;
  color: #fff7e6;
  opacity: 0.96;
}

.readout {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 999px;
  background: #fff7e6;
  color: #17141a;
  font-family: "Space Mono", ui-monospace, monospace;
  font-weight: 700;
  font-size: 12px;
  line-height: 1.3;
}

@media (max-width: 340px) {
  .frame {
    width: 140px;
  }
  .playIcon {
    width: 24px;
    height: 24px;
  }
  .badgeIcon {
    width: 10px;
    height: 10px;
  }
  .badgeLabel {
    font-size: 8px;
  }
  .scrimTitle {
    font-size: 10px;
  }
  .readout {
    font-size: 11px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .badge {
    transition: none;
  }
}

// 추적 없는 임베드(03) — 배지 광택은 매 프레임 sin 파형(pulse)을 다시 계산해
// 광택 레이어 불투명도와 배지 자체 스케일(자기 중심 기준)에 함께 반영한다.
// 계산 겹: 700ms 위상의 pulse 재계산 → 광택·스케일 동시 반영. 실키·실서버 요청 없음.
(function () {
  function mulberry32(seed) {
    var a = seed >>> 0;
    return function () {
      a |= 0; a = (a + 0x6D2B79F5) | 0;
      var t = Math.imul(a ^ (a >>> 15), 1 | a);
      t = (t + Math.imul(t ^ (t >>> 7), 61 | t)) ^ t;
      return ((t ^ (t >>> 14)) >>> 0) / 4294967296;
    };
  }

  function drawSeedThumb(canvas, seed) {
    var ctx = canvas.getContext('2d');
    if (!ctx) return;
    var rnd = mulberry32(seed);
    var w = canvas.width, h = canvas.height;
    var hues = [216, 32, 268, 168];
    ctx.fillStyle = 'hsl(' + hues[Math.floor(rnd() * hues.length)] + ', 38%, 22%)';
    ctx.fillRect(0, 0, w, h);
    for (var i = 0; i < 6; i++) {
      var cx = rnd() * w, cy = rnd() * h, r = (0.18 + rnd() * 0.3) * Math.min(w, h);
      ctx.fillStyle = 'hsla(' + hues[Math.floor(rnd() * hues.length)] + ', ' + (44 + rnd() * 22).toFixed(1) + '%, ' + (38 + rnd() * 26).toFixed(1) + '%, .5)';
      ctx.beginPath(); ctx.arc(cx, cy, r, 0, Math.PI * 2); ctx.fill();
    }
    ctx.fillStyle = 'rgba(255, 247, 230, .06)';
    for (var j = 0; j < h; j += 4) ctx.fillRect(0, j, w, 1);
  }

  var thumbEl = document.getElementById('thumb');
  var badgeEl = document.getElementById('badge');
  var badgeGlowEl = document.getElementById('badgeGlow');
  var readoutEl = document.getElementById('readout');
  if (!thumbEl || !badgeEl || !badgeGlowEl || !readoutEl) return;

  drawSeedThumb(thumbEl, 103);

  var reduce = window.matchMedia('(prefers-reduced-motion: reduce)').matches;
  var CYCLE_MS = 2000;

  function apply(t) {
    var pulse = 0.5 + 0.5 * Math.sin(2 * Math.PI * t / 700);
    badgeGlowEl.style.opacity = (0.1 + 0.45 * pulse).toFixed(3);
    badgeEl.style.transform = 'scale(' + (1 + 0.04 * pulse).toFixed(4) + ')';
    readoutEl.textContent = 'Brightness ' + Math.round(pulse * 100) + '%';
  }

  apply(0);
  if (reduce) return;

  var start = null;
  function loop(ts) {
    if (start === null) start = ts;
    var t = (ts - start) % CYCLE_MS;
    apply(t);
    requestAnimationFrame(loop);
  }
  requestAnimationFrame(loop);
})();

import { useEffect, useRef } from "react";
import styles from "./EmbedYoutubeNocookie.module.scss";

// 추적 없는 임베드 — 배지 광택은 매 프레임 sin 파형(pulse)을 다시 계산해
// 광택 레이어 불투명도와 배지 자체 스케일(자기 중심 기준)에 함께 반영한다.
// 계산 겹: 700ms 위상의 pulse 재계산 → 광택·스케일 동시 반영. 실키·실서버 요청 없음.
const CYCLE_MS = 2000;

function mulberry32(seed: number) {
  let a = seed >>> 0;
  return function () {
    a |= 0; a = (a + 0x6D2B79F5) | 0;
    let t = Math.imul(a ^ (a >>> 15), 1 | a);
    t = (t + Math.imul(t ^ (t >>> 7), 61 | t)) ^ t;
    return ((t ^ (t >>> 14)) >>> 0) / 4294967296;
  };
}

function drawSeedThumb(canvas: HTMLCanvasElement, seed: number) {
  const ctx = canvas.getContext("2d");
  if (!ctx) return;
  const rnd = mulberry32(seed);
  const w = canvas.width, h = canvas.height;
  const hues = [216, 32, 268, 168];
  ctx.fillStyle = "hsl(" + hues[Math.floor(rnd() * hues.length)] + ", 38%, 22%)";
  ctx.fillRect(0, 0, w, h);
  for (let i = 0; i < 6; i++) {
    const cx = rnd() * w, cy = rnd() * h, r = (0.18 + rnd() * 0.3) * Math.min(w, h);
    ctx.fillStyle = "hsla(" + hues[Math.floor(rnd() * hues.length)] + ", " + (44 + rnd() * 22).toFixed(1) + "%, " + (38 + rnd() * 26).toFixed(1) + "%, .5)";
    ctx.beginPath(); ctx.arc(cx, cy, r, 0, Math.PI * 2); ctx.fill();
  }
  ctx.fillStyle = "rgba(255, 247, 230, .06)";
  for (let j = 0; j < h; j += 4) ctx.fillRect(0, j, w, 1);
}

export default function EmbedYoutubeNocookie() {
  const thumbRef = useRef<HTMLCanvasElement>(null);
  const badgeRef = useRef<HTMLDivElement>(null);
  const badgeGlowRef = useRef<HTMLDivElement>(null);
  const readoutRef = useRef<HTMLDivElement>(null);

  useEffect(() => {
    const thumb = thumbRef.current;
    const badge = badgeRef.current;
    const badgeGlow = badgeGlowRef.current;
    const readout = readoutRef.current;
    if (!thumb || !badge || !badgeGlow || !readout) return;

    drawSeedThumb(thumb, 103);

    const reduce = window.matchMedia("(prefers-reduced-motion: reduce)").matches;

    function apply(t: number) {
      const pulse = 0.5 + 0.5 * Math.sin((2 * Math.PI * t) / 700);
      badgeGlow!.style.opacity = (0.1 + 0.45 * pulse).toFixed(3);
      badge!.style.transform = "scale(" + (1 + 0.04 * pulse).toFixed(4) + ")";
      readout!.textContent = "밝기 " + Math.round(pulse * 100) + "%";
    }

    apply(0);
    if (reduce) return;

    let start: number | null = null;
    let raf = 0;
    function loop(ts: number) {
      if (start === null) start = ts;
      const t = (ts - start) % CYCLE_MS;
      apply(t);
      raf = requestAnimationFrame(loop);
    }
    raf = requestAnimationFrame(loop);
    return () => cancelAnimationFrame(raf);
  }, []);

  return (
    <div className={styles.stage}>
      <section className={styles.panel}>
        <div className={styles.frame}>
          <canvas className={styles.thumb} ref={thumbRef} width={320} height={180} aria-hidden="true" />
          <div className={styles.playBtn} role="button" aria-label="재생">
            <svg className={styles.playIcon} viewBox="0 0 24 24" aria-hidden="true">
              <polygon points="7,4 20,12 7,20" />
            </svg>
          </div>
          <div className={styles.badge} ref={badgeRef}>
            <div className={styles.badgeGlow} ref={badgeGlowRef} />
            <span className={styles.badgeIcon} aria-hidden="true">
              <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 256">
                <g>
                  <path d="M216 96v112a8 8 0 0 1-8 8H48a8 8 0 0 1-8-8V96a8 8 0 0 1 8-8h160a8 8 0 0 1 8 8" opacity=".2" />
                  <path d="M208 80h-32V56a48 48 0 0 0-96 0v24H48a16 16 0 0 0-16 16v112a16 16 0 0 0 16 16h160a16 16 0 0 0 16-16V96a16 16 0 0 0-16-16M96 56a32 32 0 0 1 64 0v24H96Zm112 152H48V96h160zm-68-56a12 12 0 1 1-12-12a12 12 0 0 1 12 12" />
                </g>
              </svg>
            </span>
            <span className={styles.badgeLabel}>추적 쿠키 없음</span>
          </div>
          <div className={styles.scrim}>
            <span className={styles.scrimTitle}>추적 없는 영상 임베드</span>
          </div>
        </div>
        <div className={styles.readout} ref={readoutRef} aria-live="polite">밝기 50%</div>
      </section>
    </div>
  );
}