* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #0f1117;
  color: #e4e4e7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem 1rem;
}
h1 {
  font-size: 1.1rem;
  font-weight: 500;
  color: #a1a1aa;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

/* Main status card */
.status-card {
  width: 100%;
  max-width: 600px;
  box-sizing: border-box;
  border-radius: 1rem;
  padding: 2.5rem 2rem;
  text-align: center;
  margin-bottom: 1.5rem;
  transition: background 0.6s ease;
}
.status-card.open { background: #052e16; border: 1px solid #166534; }
.status-card.closed_inferred { background: #450a0a; border: 1px solid #991b1b; }
.status-card.closing_predicted { background: #431407; border: 1px solid #9a3412; }
.status-card.opening_predicted { background: #1a2e05; border: 1px solid #4d7c0f; }
.status-card.stale_data, .status-card.unknown { background: #1c1917; border: 1px solid #44403c; }

.status-icon { font-size: 3.5rem; margin-bottom: 0.5rem; }
.status-label {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}
.status-sub {
  font-size: 0.95rem;
  color: #a1a1aa;
}
.status-eta {
  margin-top: 1rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: #fbbf24;
}

/* Confidence bar */
.confidence {
  margin-top: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: #71717a;
}
.confidence-bar {
  width: 80px;
  height: 4px;
  background: #27272a;
  border-radius: 2px;
  overflow: hidden;
}
.confidence-fill {
  height: 100%;
  border-radius: 2px;
  transition: width 0.4s ease;
}
.open .confidence-fill { background: #22c55e; }
.closed_inferred .confidence-fill { background: #ef4444; }
.closing_predicted .confidence-fill { background: #f97316; }
.opening_predicted .confidence-fill { background: #84cc16; }

/* Trains */
.section {
  width: 100%;
  max-width: 480px;
  margin-bottom: 1.5rem;
}
.section-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: #71717a;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}
.train {
  background: #18181b;
  border: 1px solid #27272a;
  border-radius: 0.5rem;
  padding: 0.75rem 1rem;
  margin-bottom: 0.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.train-hc {
  font-family: "SF Mono", "Fira Code", monospace;
  font-weight: 700;
  font-size: 1rem;
}
.train-info {
  font-size: 0.85rem;
  color: #a1a1aa;
}
.phase-badge {
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  border-radius: 0.25rem;
  font-weight: 600;
  text-transform: uppercase;
}
.phase-approaching { background: #422006; color: #fb923c; }
.phase-strike_in { background: #450a0a; color: #fca5a5; }
.phase-at_crossing { background: #7f1d1d; color: #fef2f2; }
.phase-at_station { background: #1a2e05; color: #d9f99d; }

/* Recent trains */
.recent-train {
  background: #18181b;
  border: 1px solid #27272a;
  border-radius: 0.5rem;
  padding: 0.6rem 1rem;
  margin-bottom: 0.4rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}
.recent-train-hc {
  font-family: "SF Mono", "Fira Code", monospace;
  font-weight: 700;
}
.recent-train-dir {
  color: #a1a1aa;
  margin-left: 0.5rem;
}
.recent-train-time {
  color: #71717a;
  font-size: 0.8rem;
}

/* History */
.history-item {
  background: #18181b;
  border: 1px solid #27272a;
  border-radius: 0.5rem;
  padding: 0.6rem 1rem;
  margin-bottom: 0.4rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}
.history-state { font-weight: 600; }
.history-time { color: #71717a; font-size: 0.8rem; }
.history-duration { color: #a1a1aa; }

.empty { color: #52525b; font-style: italic; font-size: 0.9rem; padding: 1rem 0; }

.pulse {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #22c55e;
  margin-right: 0.5rem;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}
.disconnected .pulse { background: #ef4444; animation: none; }

footer {
  margin-top: auto;
  padding-top: 2rem;
  font-size: 0.75rem;
  color: #3f3f46;
}

/* Tab bar */
.tab-bar {
  width: 100%;
  max-width: 600px;
  display: flex;
  border-bottom: 2px solid #27272a;
  margin-bottom: 0;
}
.tab-bar button {
  flex: 1;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: #71717a;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.6rem 0;
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: -2px;
}
.tab-bar button:hover { color: #a1a1aa; }
.tab-bar button.active { color: #e4e4e7; border-bottom-color: #3b82f6; }

/* Legend (inside tab content) */
.legend-panel {
  display: none;
  font-size: 0.82rem;
  line-height: 1.7;
}
.legend-panel.visible { display: block; }
.legend-panel dt {
  font-weight: 700;
  color: #e4e4e7;
  margin-top: 0.4rem;
}
.legend-panel dt:first-child { margin-top: 0; }
.legend-panel dd {
  color: #a1a1aa;
  margin-left: 0;
  margin-bottom: 0.25rem;
}
.legend-section {
  font-size: 0.7rem;
  font-weight: 600;
  color: #52525b;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.8rem;
  margin-bottom: 0.2rem;
  padding-top: 0.5rem;
  border-top: 1px solid #27272a;
}
.legend-section:first-child { border-top: none; margin-top: 0; padding-top: 0; }

/* Track schematic */
.schematic {
  width: 100%;
  max-width: 600px;
  background: #18181b;
  border: 1px solid #27272a;
  border-top: none;
  border-radius: 0 0 0.75rem 0.75rem;
  padding: 1.25rem 1rem 1rem;
  margin-bottom: 1.5rem;
}
.schematic-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: #71717a;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}
.track-area {
  position: relative;
  height: 120px;
}
/* Track lines — full width */
.track-line {
  position: absolute;
  height: 3px;
  background: #3f3f46;
  left: 0;
  right: 0;
  z-index: 1;
}
.track-up { top: 35px; }
.track-down { top: 82px; }
/* Direction arrows */
.track-arrow {
  position: absolute;
  font-size: 0.55rem;
  color: #52525b;
  z-index: 3;
}
.arrow-up { top: 43px; right: 2px; }
.arrow-down { top: 71px; left: 2px; }
/* Hide arrows when berths are shown (they overlap) */
.track-area.show-berths .track-arrow { display: none; }
/* Station boxes — positioned inline on tracks */
.station {
  position: absolute;
  top: 16px;
  width: 60px;
  height: 88px;
  border: 1px dashed #3f3f46;
  border-radius: 4px;
  background: rgba(28, 25, 23, 0.85);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 3px 2px;
  z-index: 2;
  transform: translateX(-50%);
}
.station-name {
  font-size: 0.55rem;
  font-weight: 700;
  color: #a1a1aa;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.station-plats {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  justify-content: center;
  gap: 18px;
}
.station-plat {
  font-size: 0.45rem;
  color: #52525b;
}
/* Crossing marker — positioned at correct % */
.crossing-marker {
  position: absolute;
  transform: translateX(-50%);
  top: 0;
  bottom: 0;
  width: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 4;
}
.crossing-road {
  position: absolute;
  top: 20px;
  bottom: 20px;
  width: 10px;
  background: repeating-linear-gradient(
    180deg,
    #44403c 0px, #44403c 3px,
    transparent 3px, transparent 6px
  );
  border-radius: 2px;
  opacity: 0.5;
}
.crossing-light {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid #27272a;
  z-index: 5;
  transition: background 0.5s ease, box-shadow 0.5s ease;
}
.crossing-light.open { background: #22c55e; box-shadow: 0 0 8px #22c55e88; }
.crossing-light.closed_inferred { background: #ef4444; box-shadow: 0 0 8px #ef444488; }
.crossing-light.closing_predicted { background: #f97316; box-shadow: 0 0 8px #f9731688; }
.crossing-light.opening_predicted { background: #84cc16; box-shadow: 0 0 8px #84cc1688; }
.crossing-light.unknown, .crossing-light.stale_data { background: #52525b; }
.crossing-label {
  font-size: 0.5rem;
  color: #71717a;
  margin-top: 2px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  z-index: 5;
}
/* Berth tick marks */
.berth-tick {
  position: absolute;
  width: 1px;
  height: 5px;
  background: #3f3f46;
  z-index: 2;
  transform: translateX(-50%);
}
.berth-tick.up { top: 32px; }
.berth-tick.down { top: 83px; }
.berth-tick.station-tick {
  width: 2px;
  height: 7px;
  background: #a78bfa;
}
.berth-label {
  position: absolute;
  font-size: 0.4rem;
  color: #3f3f46;
  transform: translateX(-50%);
  z-index: 2;
  font-family: "SF Mono", "Fira Code", monospace;
}
.berth-label.up { top: 47px; }
.berth-label.down { top: 65px; }
/* Berth labels hidden by default, shown when .show-berths is on track-area */
.berth-label { display: none; }
.track-area.show-berths .berth-label { display: block; }
/* Station tick labels hidden by default, shown with berths */
.station-tick-label { color: #a78bfa; font-size: 0.45rem; }
/* Toggle button in schematic title */
.berth-toggle {
  background: none;
  border: 1px solid #27272a;
  border-radius: 0.5rem;
  color: #71717a;
  font-size: 0.65rem;
  padding: 0.2rem 0.5rem;
  cursor: pointer;
  margin-left: 0.5rem;
  vertical-align: middle;
}
.berth-toggle:hover { color: #e4e4e7; border-color: #3f3f46; }
/* Train indicators on track */
.track-train {
  position: absolute;
  height: 18px;
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "SF Mono", "Fira Code", monospace;
  font-size: 0.6rem;
  font-weight: 700;
  color: #fff;
  z-index: 6;
  transition: left 1s ease, background 0.3s ease;
  white-space: nowrap;
  padding: 0 4px;
  min-width: 36px;
  transform: translateX(-50%);
}
.track-train.up { top: 26px; }
.track-train.down { top: 73px; }
.track-train.phase-approaching { background: #92400e; }
.track-train.phase-strike_in { background: #991b1b; }
.track-train.phase-at_crossing { background: #dc2626; }
.track-train.phase-at_station { background: #4d7c0f; }
.track-train.phase-cleared { background: #1e3a5f; opacity: 0.6; }
/* Upcoming trains panel */
.upcoming-panel {
  display: none;
  font-size: 0.75rem;
}
.upcoming-panel.visible { display: block; }
.upcoming-panel h3 {
  margin: 0 0 0.5rem 0;
  font-size: 0.8rem;
  color: #a1a1aa;
}
/* Sub-tabs (segmented control) */
.sub-tabs {
  display: flex;
  background: #0f1117;
  border-radius: 0.5rem;
  padding: 0.2rem;
  margin-bottom: 0.75rem;
  gap: 0.15rem;
}
.sub-tab {
  flex: 1;
  background: transparent;
  border: none;
  border-radius: 0.375rem;
  color: #52525b;
  font-size: 0.72rem;
  font-weight: 500;
  padding: 0.35rem 0.5rem;
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: center;
}
.sub-tab:hover { color: #a1a1aa; }
.sub-tab.active {
  background: #27272a;
  color: #e4e4e7;
  box-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

.upcoming-panel .station-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}
.upcoming-panel .station-tab {
  background: none;
  border: 1px solid #27272a;
  border-radius: 0.4rem;
  color: #71717a;
  font-size: 0.7rem;
  padding: 0.15rem 0.5rem;
  cursor: pointer;
}
.upcoming-panel .station-tab.active {
  color: #e4e4e7;
  border-color: #3f3f46;
  background: #27272a;
}
.upcoming-table {
  width: 100%;
  border-collapse: collapse;
}
.upcoming-table th {
  text-align: left;
  color: #71717a;
  font-weight: 500;
  padding: 0.2rem 0.4rem;
  border-bottom: 1px solid #27272a;
  font-size: 0.65rem;
}
.upcoming-table td {
  padding: 0.25rem 0.4rem;
  color: #d4d4d8;
  border-bottom: 1px solid #1f1f23;
}
.upcoming-table .delayed {
  color: #f87171;
  text-decoration: line-through;
  font-size: 0.6rem;
  margin-left: 0.3rem;
}
.upcoming-table .status-badge {
  font-size: 0.55rem;
  padding: 0.1rem 0.3rem;
  border-radius: 0.25rem;
  background: #27272a;
  color: #a1a1aa;
}
.upcoming-table .status-badge.approaching { background: #92400e33; color: #fbbf24; }
.upcoming-table .status-badge.at_platform { background: #4d7c0f33; color: #84cc16; }

/* Predictions panel */
.predictions-panel {
  display: none;
  font-size: 0.82rem;
}
.pred-current {
  background: #1c1917;
  border: 1px solid #44403c;
  border-radius: 0.5rem;
  padding: 0.6rem 1rem;
  margin-bottom: 0.75rem;
  font-size: 0.85rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.pred-current-trains {
  display: flex;
  gap: 0.5rem;
}
.pred-train {
  font-family: "SF Mono", "Fira Code", monospace;
  font-weight: 600;
  font-size: 0.75rem;
}
.pred-card {
  background: #18181b;
  border: 1px solid #27272a;
  border-radius: 0.5rem;
  padding: 0.75rem 1rem;
  margin-bottom: 0.5rem;
  border-left: 3px solid #3f3f46;
}
.pred-card.imminent { border-left-color: #f97316; background: #1a1008; }
.pred-card.active { border-left-color: #ef4444; background: #1a0808; }
.pred-card.soon { border-left-color: #fbbf24; }
.pred-card.later { border-left-color: #3b82f6; }
.pred-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}
.pred-times {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
}
.pred-close { color: #fca5a5; font-weight: 600; }
.pred-arrow { color: #52525b; }
.pred-open { color: #86efac; font-weight: 600; }
.pred-dur { color: #71717a; font-size: 0.7rem; margin-left: 0.3rem; }
.pred-until {
  font-weight: 700;
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 0.25rem;
  background: #27272a;
  color: #a1a1aa;
}
.pred-card.imminent .pred-until { background: #431407; color: #fb923c; }
.pred-card.active .pred-until { background: #450a0a; color: #fca5a5; }
.pred-card.soon .pred-until { background: #422006; color: #fbbf24; }
.pred-trains {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.pred-train-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
}
.pred-eta {
  font-family: "SF Mono", "Fira Code", monospace;
  color: #a1a1aa;
  font-size: 0.7rem;
}
.pred-route {
  color: #71717a;
  font-size: 0.65rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}