:root {
  color-scheme: dark;
  --bg: #101316;
  --panel: #1a2025;
  --panel-strong: #242d33;
  --text: #f4f7f8;
  --muted: #a7b3ba;
  --accent: #4fc3b1;
  --warning: #ffbe57;
  --error: #ff6b6b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(135deg, rgba(79, 195, 177, 0.14), transparent 40%),
    var(--bg);
  color: var(--text);
  font-family:
    "Segoe UI",
    "Yu Gothic UI",
    "Hiragino Sans",
    sans-serif;
}

.board {
  width: min(980px, 100%);
  min-height: 100vh;
  margin: 0 auto;
  padding: 20px 20px 24px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 18px;
}

.topbar,
footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.header-meta {
  display: grid;
  justify-items: end;
  gap: 8px;
}

.clock {
  color: var(--text);
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  font-weight: 800;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.status {
  min-width: 88px;
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--muted);
  font-weight: 700;
  text-align: center;
}

.status.loading {
  color: var(--warning);
}

.status.error {
  color: var(--error);
}

.route-groups {
  display: grid;
  gap: 22px;
  align-self: start;
}

.route-group {
  display: grid;
  gap: 10px;
}

.route-group h2 {
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0;
}

.primary-routes h2 {
  color: var(--accent);
}

.departures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.panel {
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: rgba(26, 32, 37, 0.88);
  overflow: hidden;
}

.route-heading {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 8px;
  min-height: 76px;
  padding: 16px;
  background: var(--panel-strong);
  color: var(--muted);
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  font-weight: 700;
  text-align: center;
}

.arrow {
  color: var(--accent);
  font-size: 1.6rem;
}

.source-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 16px 0;
}

.source-links a {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
}

.source-links a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.time-list {
  list-style: none;
  margin: 0;
  padding: 6px 0;
}

.time-list li {
  min-height: 92px;
  padding: 18px 20px;
  display: grid;
  grid-template-columns: minmax(116px, auto) minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.time-list li:first-child {
  border-top: 0;
}

.time-list strong {
  color: var(--accent);
  font-size: clamp(2.5rem, 7vw, 4.6rem);
  line-height: 1;
  letter-spacing: 0;
  font-variant-numeric: tabular-nums;
}

.time-list span {
  color: var(--muted);
  font-size: clamp(0.9rem, 1.9vw, 1.05rem);
  line-height: 1.45;
}

.departure-meta {
  min-width: 0;
  display: grid;
  gap: 6px;
}

.countdown {
  width: fit-content;
  padding: 4px 8px;
  border-radius: 8px;
  background: rgba(79, 195, 177, 0.12);
  color: var(--accent) !important;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.time-list .empty {
  display: block;
  color: var(--muted);
  font-weight: 700;
}

.secondary-routes {
  opacity: 0.9;
}

.secondary-routes .departures {
  gap: 14px;
}

.secondary-routes .route-heading {
  min-height: 58px;
  padding: 12px 14px;
  font-size: 0.96rem;
}

.secondary-routes .source-links {
  padding: 8px 14px 0;
}

.secondary-routes .time-list li {
  min-height: 72px;
  padding: 12px 16px;
}

.secondary-routes .time-list strong {
  font-size: clamp(2rem, 5vw, 3.3rem);
}

.secondary-routes .countdown {
  padding: 3px 7px;
}

footer {
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 760px) {
  .board {
    padding: 16px 14px 18px;
    gap: 14px;
  }

  .topbar,
  footer {
    align-items: flex-start;
  }

  .header-meta {
    justify-items: end;
  }

  .route-groups {
    gap: 18px;
  }

  .departures {
    grid-template-columns: 1fr;
    align-self: stretch;
  }

  .time-list li {
    min-height: 88px;
    grid-template-columns: minmax(96px, auto) 1fr;
    padding: 14px 16px;
  }
}