:root {
  --bg: #0f172a;
  --card: rgba(15, 23, 42, 0.92);
  --accent: #38bdf8;
  --text: #e2e8f0;
  --muted: #94a3b8;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: radial-gradient(circle at top, rgba(56, 189, 248, 0.18), transparent 35%),
    linear-gradient(135deg, #0f172a 0%, #020617 100%);
  color: var(--text);
}

.container {
  width: 100%;
  max-width: 540px;
  padding: 24px;
}

.card {
  background: var(--card);
  border: 1px solid rgba(147, 197, 253, 0.12);
  border-radius: 28px;
  padding: 40px 36px;
  box-shadow: 0 24px 80px rgba(15, 23, 42, 0.35);
  text-align: center;
}

.logo {
  display: inline-block;
  margin-bottom: 22px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent);
}

h1 {
  font-size: clamp(2.4rem, 5vw, 4rem);
  margin-bottom: 16px;
  letter-spacing: -0.04em;
}

p {
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 28px;
}

.note {
  font-size: 0.95rem;
  color: #cbd5e1;
}

@media (max-width: 520px) {
  .card {
    padding: 30px 22px;
  }
  .countdown {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}