Countdown-Mar-5/index.html at master · Ghotics/Countdown-Mar-5 · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <title>Countdown — March 5 at 12:00 (Europe/Madrid)</title>
  <meta name="description" content="Live countdown timer to March 5 at 12:00 in the Europe/Madrid time zone, with confetti celebration at zero." />
  <link rel="preconnect" href="https://fonts.googleapis.com">
  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
  <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;600;800&display=swap" rel="stylesheet">
  <style>
    :root {
      --bg: #0b1020;
      --card: #121832;
      --accent: #7aa2ff;
      --muted: #9aa3b2;
      --text: #e8edf7;
      --success: #7cffc4;
    }
    * { box-sizing: border-box; }
    html, body { height: 100%; }
    body {
      margin: 0;
      font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Apple Color Emoji", "Segoe UI Emoji";
      color: var(--text);
      background: radial-gradient(1200px 800px at 20% 10%, #19234a 0%, transparent 50%),
                  radial-gradient(1000px 600px at 80% 80%, #0f1736 0%, transparent 50%),
                  var(--bg);
      display: grid;
      place-items: center;
      padding: 24px;
      overflow-x: hidden;
    }
    .wrap { width: min(100%, 980px); text-align: center; position: relative; z-index: 1; }
    header { margin-bottom: 24px; }
    h1 {
      font-size: clamp(28px, 4vw, 44px);
      font-weight: 800;
      margin: 0 0 8px 0;
      letter-spacing: -0.02em;
    }
    .sub { color: var(--muted); font-size: clamp(14px, 1.6vw, 16px); }
    .timer { display: grid; grid-template-columns: repeat(4, minmax(120px, 1fr)); gap: 16px; margin: 24px 0 16px; }
    .unit {
      background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
      border: 1px solid rgba(255,255,255,0.12);
      border-radius: 20px;
      padding: 20px 12px;
      box-shadow: 0 10px 30px rgba(0,0,0,0.25);
      backdrop-filter: blur(6px);
      transform: translateZ(0);
    }
    .num { font-variant-numeric: tabular-nums; font-size: clamp(36px, 8vw, 64px); font-weight: 800; line-height: 1; letter-spacing: 0.02em; }
    .label { margin-top: 6px; font-size: 14px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.18em; }
    .note { margin-top: 14px; color: var(--muted); font-size: 13px; }
    footer { margin-top: 18px; color: var(--muted); font-size: 12px; }
    .done { font-size: clamp(24px, 4vw, 32px); font-weight: 800; color: var(--success); margin: 16px 0 0; opacity: 0; transform: scale(0.9); }

    @keyframes popIn { to { opacity: 1; transform: scale(1); } }
    @keyframes glow {
      0% { text-shadow: 0 0 0 rgba(124,255,196,0); }
      50% { text-shadow: 0 0 24px rgba(124,255,196,0.6); }
      100% { text-shadow: 0 0 0 rgba(124,255,196,0); }
    }

    .celebrate { animation: popIn 400ms ease-out forwards, glow 1.8s ease-in-out 2; }

    .tick { animation: tick 200ms ease-out; }
    @keyframes tick { from { transform: translateY(-2px); } to { transform: translateY(0); } }

    @media (max-width: 640px) { .timer { grid-template-columns: repeat(2, 1fr); } }

    canvas#confetti { position: fixed; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 0; }
    .replay {
      margin-top: 12px; border: 1px solid rgba(255,255,255,0.2); background: rgba(255,255,255,0.05);
      color: var(--text); border-radius: 999px; padding: 8px 14px; cursor: pointer; font-weight: 600;
      transition: transform .15s ease, background .2s ease;
    }
    .replay:hover { transform: translateY(-1px); background: rgba(255,255,255,0.08); }
  </style>
</head>
<body>
  <canvas id="confetti"></canvas>
  <div class="wrap">
    <header>
      <h1>Countdown to March 5 — 12:00 Madrid time</h1>
      <div class="sub">Time zone: <strong>Europe/Madrid</strong></div>
    </header>

    <section id="countdown" aria-live="polite">
      <div class="timer" role="group" aria-label="Time remaining">
        <div class="unit"><div class="num" id="days">–</div><div class="label">Days</div></div>
        <div class="unit"><div class="num" id="hours">–</div><div class="label">Hours</div></div>
        <div class="unit"><div class="num" id="minutes">–</div><div class="label">Minutes</div></div>
        <div class="unit"><div class="num" id="seconds">–</div><div class="label">Seconds</div></div>
      </div>
      <p class="note" id="note"></p>
      <p class="done" id="done" hidden>It's 12:00 on March 5 in Madrid 🎉</p>
      <button id="replay" class="replay" hidden>Replay celebration</button>
    </section>
  </div>

  <script>
    function getTimeZoneOffsetMs(date, timeZone) {
      const dtf = new Intl.DateTimeFormat('en-US', {
        timeZone,
        year: 'numeric', month: '2-digit', day: '2-digit',
        hour: '2-digit', minute: '2-digit', second: '2-digit',
        hour12: false
      });
      const parts = dtf.formatToParts(date);
      const map = Object.fromEntries(parts.map(p => [p.type, p.value]));
      const asUTC = Date.UTC(
        parseInt(map.year, 10),
        parseInt(map.month, 10) - 1,
        parseInt(map.day, 10),
        parseInt(map.hour, 10),
        parseInt(map.minute, 10),
        parseInt(map.second, 10)
      );
      return asUTC - date.getTime();
    }
    function zonedTimeToUtc(year, month, day, hour, minute, second, timeZone) {
      const guess = new Date(Date.UTC(year, month - 1, day, hour, minute, second));
      const offset = getTimeZoneOffsetMs(guess, timeZone);
      return new Date(guess.getTime() - offset);
    }

    const TARGET_TZ = 'Europe/Madrid';
    const now = new Date();
    const targetUTC = zonedTimeToUtc(now.getFullYear(), 3, 5, 12, 0, 0, TARGET_TZ);

    const $d = document.getElementById('days');
    const $h = document.getElementById('hours');
    const $m = document.getElementById('minutes');
    const $s = document.getElementById('seconds');
    const $note = document.getElementById('note');
    const $done = document.getElementById('done');
    const $replay = document.getElementById('replay');

    function format(n) { return String(Math.max(0, n)).padStart(2, '0'); }

    const confettiCanvas = document.getElementById('confetti');
    const ctx = confettiCanvas.getContext('2d');
    let pixels = [];
    let confettiRunning = false;
    function resizeCanvas() { confettiCanvas.width = window.innerWidth; confettiCanvas.height = window.innerHeight; }
    window.addEventListener('resize', resizeCanvas, { passive: true }); resizeCanvas();

    function spawnConfetti(count) {
      const w = confettiCanvas.width, h = confettiCanvas.height;
      for (let i = 0; i < count; i++) {
        const angle = Math.random() * Math.PI - Math.PI/2;
        pixels.push({
          x: w/2 + (Math.random() - 0.5) * 200,
          y: h/2,
          vx: Math.cos(angle) * (2 + Math.random() * 6),
          vy: - (4 + Math.random() * 10),
          s: 4 + Math.random() * 6,
          r: Math.random() * Math.PI,
          vr: (Math.random() - 0.5) * 0.2,
          shape: Math.random() < 0.5 ? 'rect' : 'circle',
          alpha: 1,
        });
      }
    }

    function drawConfetti() {
      ctx.clearRect(0,0,confettiCanvas.width, confettiCanvas.height);
      for (const p of pixels) {
        ctx.save(); ctx.globalAlpha = p.alpha; ctx.translate(p.x, p.y); ctx.rotate(p.r);
        if (p.shape === 'rect') { ctx.fillRect(-p.s, -p.s/2, p.s*2, p.s); }
        else { ctx.beginPath(); ctx.arc(0,0,p.s,0,Math.PI*2); ctx.fill(); }
        ctx.restore();
      }
    }

    function stepConfetti() {
      const g = 0.15; const drag = 0.995; const fade = 0.0045;
      for (const p of pixels) {
        p.vx *= drag; p.vy = p.vy * drag + g; p.x += p.vx; p.y += p.vy; p.r += p.vr; p.alpha -= fade;
      }
      pixels = pixels.filter(p => p.alpha > 0 && p.y < confettiCanvas.height + 40);
    }

    function rafLoop() {
      if (!confettiRunning) return;
      stepConfetti(); drawConfetti(); requestAnimationFrame(rafLoop);
    }

    function celebrate(durationMs = 6000) {
      if (confettiRunning) return;
      confettiRunning = true;
      const bursts = [0, 200, 400, 600, 900, 1200, 1500];
      bursts.forEach((t, i) => setTimeout(() => spawnConfetti(80 - i * 8), t));
      const sprinkle = setInterval(() => {
        const w = confettiCanvas.width;
        const x = Math.random() * w;
        pixels.push({ x, y: -20, vx: (Math.random()-0.5)*1.5, vy: 2+Math.random()*2, s: 3+Math.random()*4, r: 0, vr: (Math.random()-0.5)*0.2, shape: Math.random()<0.5?'rect':'circle', alpha: 1 });
      }, 60);
      requestAnimationFrame(rafLoop);
      setTimeout(() => { confettiRunning = false; clearInterval(sprinkle); }, durationMs);
    }

    function update() {
      const nowUTC = Date.now();
      let diff = targetUTC.getTime() - nowUTC;

      if (diff <= 0) {
        document.getElementById('countdown').setAttribute('aria-label', 'Countdown complete');
        $d.textContent = '00'; $h.textContent = '00'; $m.textContent = '00'; $s.textContent = '00';
        $note.textContent = '';
        if ($done.hidden) {
          $done.hidden = false; $done.classList.add('celebrate'); celebrate(); $replay.hidden = false;
        }
        return;
      }

      const seconds = Math.floor(diff / 1000) % 60;
      const minutes = Math.floor(diff / (1000 * 60)) % 60;
      const hours   = Math.floor(diff / (1000 * 60 * 60)) % 24;
      const days    = Math.floor(diff / (1000 * 60 * 60 * 24));

      $d.textContent = String(days).padStart(2, '0');
      $h.textContent = format(hours);
      $m.textContent = format(minutes);
      $s.textContent = format(seconds);

      [$d,$h,$m,$s].forEach(el => { el.classList.remove('tick'); void el.offsetWidth; el.classList.add('tick'); });

      const targetLocal = new Date(targetUTC);
      $note.textContent = `Reaches 12:00 on March 5 in Madrid (your local: ${targetLocal.toLocaleString([], { dateStyle: 'medium', timeStyle: 'medium' })}).`;
    }

    update();
    let interval = setInterval(update, 1000);

    $replay.addEventListener('click', () => { celebrate(); });

    document.addEventListener('visibilitychange', () => {
      if (document.hidden) { clearInterval(interval); }
      else { update(); interval = setInterval(update, 1000); }
    });
  </script>
</body>
</html>