:root {
  --bg-start: #1a1f3a;
  --bg-end: #2d3561;
  --card-bg: rgba(255, 255, 255, 0.08);
  --card-border: rgba(255, 255, 255, 0.12);
  --text: #f5f7ff;
  --text-muted: rgba(245, 247, 255, 0.65);
  --accent: #ffb347;
  --good: #6ee7a0;
  --moderate: #ffd166;
  --bad: #ff6b6b;
  --bus: #5eb3ff;
  --bus-glow: rgba(94, 179, 255, 0.35);
}

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

html,
body {
  height: 100%;
}

body {
  font-family: "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
  background: linear-gradient(145deg, var(--bg-start) 0%, var(--bg-end) 55%, #1e2749 100%);
  color: var(--text);
  min-height: 100vh;
}

.dashboard {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 2rem;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
  gap: 1rem;
}

.greeting {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
}

.datetime {
  text-align: right;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.datetime .time {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 300;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
}

/* ── Compact info bar (single row) ── */

.info-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.25rem;
  gap: 0.5rem;
  flex-wrap: nowrap;
  overflow-x: auto;
}

.info-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex: 1;
  min-width: 0;
  white-space: nowrap;
}

.info-icon img {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.info-emoji {
  font-size: 1.6rem;
  line-height: 1;
  flex-shrink: 0;
}

.info-body {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.info-value {
  font-size: clamp(1.1rem, 2.5vw, 1.45rem);
  font-weight: 700;
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

.info-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
}

.info-divider {
  width: 1px;
  height: 36px;
  background: var(--card-border);
  flex-shrink: 0;
}

.aq-badge {
  display: inline-block;
  padding: 0.1em 0.45em;
  border-radius: 999px;
  font-size: 0.7em;
  font-weight: 600;
  margin-left: 0.25rem;
  vertical-align: middle;
}

.aq-low { background: rgba(110, 231, 160, 0.25); color: var(--good); }
.aq-moderate { background: rgba(255, 209, 102, 0.25); color: var(--moderate); }
.aq-high { background: rgba(255, 107, 107, 0.25); color: var(--bad); }

/* ── Bus hero section ── */

.bus-hero {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 1.75rem 1.5rem 2rem;
  background: linear-gradient(160deg, rgba(94, 179, 255, 0.18) 0%, rgba(255, 255, 255, 0.06) 60%);
  border-color: rgba(94, 179, 255, 0.35);
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.25), 0 0 60px var(--bus-glow);
}

.bus-hero-top {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 1.75rem;
}

.bus-badge {
  background: var(--bus);
  color: #0d1b2e;
  border-radius: 16px;
  padding: 0.6rem 1.4rem;
  flex-shrink: 0;
  box-shadow: 0 4px 20px var(--bus-glow);
}

.bus-route {
  font-size: clamp(2.8rem, 8vw, 4.5rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1;
}

.bus-meta {
  min-width: 0;
}

.bus-direction {
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  font-weight: 600;
  color: var(--bus);
}

.bus-stop-name {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.eta-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  flex: 1;
  align-items: stretch;
}

.eta-item {
  border-radius: 20px;
  padding: 1.5rem 1rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border: 2px solid transparent;
  transition: background 0.3s, box-shadow 0.3s;
}

/* 最近一班 — 最亮 */
.eta-item.eta-near {
  background: rgba(94, 179, 255, 0.28);
  border-color: #7ec8ff;
  box-shadow: 0 0 40px rgba(126, 200, 255, 0.55), inset 0 0 24px rgba(126, 200, 255, 0.12);
}

.eta-item.eta-near .eta-minutes {
  color: #ffffff;
  text-shadow: 0 0 20px rgba(180, 220, 255, 0.8);
}

.eta-item.eta-near .eta-minutes .unit {
  color: #b8e0ff;
}

.eta-item.eta-near .eta-time {
  color: rgba(255, 255, 255, 0.85);
}

/* 第二班 — 中等亮度 */
.eta-item.eta-mid {
  background: rgba(80, 160, 210, 0.14);
  border-color: rgba(100, 175, 220, 0.55);
  box-shadow: 0 0 16px rgba(100, 175, 220, 0.2);
}

.eta-item.eta-mid .eta-minutes {
  color: #a8d4f5;
}

.eta-item.eta-mid .eta-minutes .unit {
  color: #7eb8dd;
}

.eta-item.eta-mid .eta-time {
  color: rgba(200, 225, 245, 0.65);
}

/* 第三班 — 最暗 */
.eta-item.eta-far {
  background: rgba(0, 0, 0, 0.22);
  border-color: rgba(94, 179, 255, 0.2);
  box-shadow: none;
}

.eta-item.eta-far .eta-minutes {
  color: rgba(160, 190, 220, 0.55);
}

.eta-item.eta-far .eta-minutes .unit {
  color: rgba(120, 155, 190, 0.45);
}

.eta-item.eta-far .eta-time {
  color: rgba(160, 180, 210, 0.4);
}

.eta-minutes {
  font-size: clamp(3rem, 10vw, 5.5rem);
  font-weight: 800;
  color: #fff;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.eta-minutes .unit {
  font-size: 0.35em;
  font-weight: 500;
  color: var(--bus);
}

.eta-time {
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  color: var(--text-muted);
  margin-top: 0.6rem;
}

.footer {
  margin-top: 1rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.loading {
  opacity: 0.45;
}

.error-text {
  color: var(--bad);
  font-size: 1.1rem;
  grid-column: 1 / -1;
  text-align: center;
  padding: 2rem;
}

@media (max-width: 640px) {
  .info-bar {
    padding: 0.75rem 1rem;
  }

  .info-divider {
    display: none;
  }

  .info-item {
    flex: 0 0 auto;
  }

  .bus-hero-top {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .eta-list {
    grid-template-columns: 1fr;
  }

  .eta-item:first-child {
    order: -1;
  }
}