:root {
  color-scheme: light;
  --color-background: #f3f6fb;
  --color-surface: #ffffff;
  --color-surface-muted: #f8faff;
  --color-text: #172033;
  --color-text-muted: #56647a;
  --color-accent: #3156c8;
  --color-accent-soft: #e9efff;
  --color-border: #dce3ef;
  --shadow-card: 0 1.5rem 4rem rgba(23, 32, 51, 0.12);
  --radius-large: 1.5rem;
  --radius-medium: 1rem;
  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
}

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

html {
  background: var(--color-background);
  font-family:
    ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

body {
  min-width: 20rem;
  min-height: 100vh;
  min-height: 100svh;
  margin: 0;
  display: grid;
  grid-template-rows: auto 1fr auto;
  color: var(--color-text);
  background:
    radial-gradient(circle at top left, rgba(49, 86, 200, 0.11), transparent 32rem),
    radial-gradient(circle at bottom right, rgba(81, 121, 228, 0.08), transparent 28rem),
    var(--color-background);
}

.site-header,
.site-footer {
  padding-inline: var(--space-4);
  text-align: center;
}

.site-header {
  padding-top: clamp(var(--space-5), 6vh, var(--space-6));
}

.site-header h1 {
  margin: var(--space-1) 0 0;
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  line-height: 1.15;
  letter-spacing: -0.035em;
}

.eyebrow {
  margin: 0;
  color: var(--color-accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

main {
  width: 100%;
  display: grid;
  place-items: center;
  padding: var(--space-5) var(--space-4);
}

.countdown {
  width: min(100%, 68rem);
  padding: clamp(var(--space-4), 5vw, var(--space-6));
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow-card);
}

.countdown h2 {
  margin: 0 0 var(--space-5);
  color: var(--color-text-muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
  font-weight: 600;
  letter-spacing: 0.01em;
}

.countdown-grid {
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: var(--space-3);
  list-style: none;
}

.countdown-item {
  min-width: 0;
  padding: clamp(var(--space-3), 3vw, var(--space-5)) var(--space-2);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  background: var(--color-surface-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
}

.countdown-value {
  color: var(--color-accent);
  font-size: clamp(2.25rem, 6vw, 4.75rem);
  font-weight: 750;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  letter-spacing: -0.055em;
}

.countdown-label {
  color: var(--color-text-muted);
  font-size: clamp(0.72rem, 1.6vw, 0.88rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.countdown-status {
  margin: var(--space-5) 0 0;
  color: var(--color-text-muted);
  font-size: clamp(0.95rem, 2vw, 1.1rem);
}

.countdown-status time {
  color: var(--color-text);
  font-weight: 650;
}

.noscript-message {
  width: min(100%, 48rem);
  margin: var(--space-4) auto 0;
  padding: var(--space-3) var(--space-4);
  color: var(--color-text);
  text-align: center;
  background: var(--color-accent-soft);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-medium);
}

.site-footer {
  padding-bottom: var(--space-4);
  color: var(--color-text-muted);
  font-size: 0.82rem;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 50rem) {
  .countdown-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .countdown-item {
    grid-column: span 2;
  }

  .countdown-item:nth-child(4),
  .countdown-item:nth-child(5) {
    grid-column: span 3;
  }
}

@media (max-width: 32rem) {
  :root {
    --space-4: 1.25rem;
    --space-5: 1.5rem;
  }

  .countdown-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-2);
  }

  .countdown-item,
  .countdown-item:nth-child(4) {
    grid-column: auto;
  }

  .countdown-item:nth-child(5) {
    grid-column: 1 / -1;
  }

  .countdown-status {
    max-width: 20rem;
    margin-inline: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}