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

:root {
  --bg: #0a0a0a;
  --surface: #1a1a1a;
  --text: #ffffff;
  --text-muted: #888888;
  --accent: #3b82f6;
  --warning: #f59e0b;
  --danger: #ef4444;
  --success: #22c55e;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

.container {
  max-width: 600px;
  margin: 0 auto;
  padding: 24px 16px;
  padding-top: calc(24px + env(safe-area-inset-top, 20px));
}

/* Navigation */
.nav {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.nav a {
  color: var(--text-muted);
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--surface);
  font-size: 14px;
  transition: all 0.2s;
}

.nav a:hover,
.nav a.active {
  color: var(--text);
  background: var(--accent);
}

/* Home Page Summary */
.summary {
  font-size: 24px;
  line-height: 1.6;
  padding: 32px 0;
}

.summary .link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.summary .link:hover {
  text-decoration: underline;
}

.summary .link.warning {
  color: var(--warning);
}

/* Page Header */
.page-header {
  margin-bottom: 24px;
}

.page-header h1 {
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 4px;
}

.page-header .subtitle {
  color: var(--text-muted);
  font-size: 14px;
}

/* Cards */
.card {
  background: var(--surface);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 12px;
}

.card-title {
  font-weight: 600;
  margin-bottom: 4px;
}

.card-subtitle {
  color: var(--text-muted);
  font-size: 14px;
}

/* Arrival/Departure Cards */
.arrival-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.arrival-info {
  flex: 1;
}

.arrival-route {
  font-size: 20px;
  font-weight: 600;
}

.arrival-destination {
  color: var(--text-muted);
  font-size: 14px;
}

.arrival-time {
  text-align: right;
}

.arrival-minutes {
  font-size: 32px;
  font-weight: 700;
}

.arrival-minutes.soon {
  color: var(--warning);
}

.arrival-minutes.now {
  color: var(--success);
}

.arrival-scheduled {
  color: var(--text-muted);
  font-size: 14px;
}

.delay-badge {
  display: inline-block;
  background: var(--warning);
  color: var(--bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  margin-left: 8px;
}

/* Past events */
.event-card.past {
  opacity: 0.4;
}

/* Weather */
.weather-current {
  text-align: center;
  padding: 32px 0;
}

.weather-temp {
  font-size: 72px;
  font-weight: 200;
}

.weather-conditions {
  color: var(--text-muted);
  font-size: 18px;
}

.weather-details {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 24px;
}

.weather-detail {
  background: var(--surface);
  padding: 16px;
  border-radius: 12px;
  text-align: center;
}

.weather-detail-label {
  color: var(--text-muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.weather-detail-value {
  font-size: 24px;
  font-weight: 600;
  margin-top: 4px;
}

/* Calendar Events */
.event-card {
  display: flex;
  gap: 16px;
}

.event-time {
  width: 60px;
  flex-shrink: 0;
  font-weight: 600;
  color: var(--accent);
}

.event-time.all-day {
  color: var(--text-muted);
  font-size: 12px;
}

.event-details {
  flex: 1;
}

.event-title {
  font-weight: 500;
}

.event-location {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 2px;
}

.event-source {
  display: inline-block;
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--surface);
  color: var(--text-muted);
  margin-top: 4px;
}

/* Status Messages */
.status {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
}

.status.loading::before {
  content: '';
  display: block;
  width: 32px;
  height: 32px;
  margin: 0 auto 16px;
  border: 3px solid var(--surface);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

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

/* Auth Banner */
.auth-banner {
  background: var(--surface);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.auth-banner p {
  color: var(--text-muted);
  font-size: 14px;
}

.auth-banner .btn {
  background: var(--accent);
  color: var(--text);
  border: none;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}

.auth-banner .btn:hover {
  opacity: 0.9;
}

/* Last Updated */
.last-updated {
  text-align: center;
  color: var(--text-muted);
  font-size: 12px;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--surface);
}

/* Responsive */
@media (max-width: 400px) {
  .summary {
    font-size: 20px;
  }

  .weather-temp {
    font-size: 56px;
  }

  .arrival-minutes {
    font-size: 28px;
  }
}