:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --text: #f8fafc;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --warning: #fbbf24;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(circle at top, #1d4ed8 0%, transparent 45%),
    var(--bg);
}

.hero {
  text-align: center;
  padding: 2rem;
}

.badge {
  display: inline-block;
  margin: 0 0 1.5rem;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.clock {
  margin: 0;
  font-size: clamp(3rem, 12vw, 6.5rem);
  font-weight: 300;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  line-height: 1.1;
}

.date {
  margin: 0.75rem 0 2rem;
  color: var(--muted);
  font-size: clamp(1rem, 2.5vw, 1.25rem);
}

.notice {
  margin: 0;
  padding: 0.85rem 1.25rem;
  border-radius: 10px;
  background: rgba(251, 191, 36, 0.12);
  border: 1px solid rgba(251, 191, 36, 0.35);
  color: var(--warning);
  font-size: 1.05rem;
}