:root {
  --theme: dark;
  --nus-blue: #003D7C;
  --nus-orange: #EF7C00;
  --bg-primary: #0b0f19;
  --bg-secondary: #131b2e;
  --bg-card: #182238;
  --bg-card-hover: #1f2c49;
  --border-color: #273553;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --crowd-low: #10b981;
  --crowd-low-bg: rgba(16, 185, 129, 0.15);
  --crowd-medium: #f59e0b;
  --crowd-medium-bg: rgba(245, 158, 11, 0.15);
  --crowd-high: #ef4444;
  --crowd-high-bg: rgba(239, 68, 68, 0.15);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
}

[data-theme="light"] {
  --theme: light;
  --nus-blue: #003D7C;
  --nus-blue-hover: #002c59;
  --nus-blue-light: #e8eff7;
  --nus-orange: #EF7C00;
  --nus-orange-hover: #d36e00;
  --nus-orange-light: #fff4e6;

  --bg-primary: #f0f4f8;
  --bg-secondary: #e8eff7;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;
  --border-color: #cbd5e1;
  --border-subtle: #e2e8f0;
  --text-main: #001a33;
  --text-muted: #475569;
  --text-dim: #64748b;

  --card-shadow: 0 2px 6px rgba(0, 61, 124, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --card-shadow-hover: 0 6px 16px rgba(0, 61, 124, 0.12), 0 2px 4px rgba(0, 0, 0, 0.04);

  --crowd-low: #047857;
  --crowd-low-bg: rgba(16, 185, 129, 0.14);
  --crowd-medium: #b45309;
  --crowd-medium-bg: rgba(245, 158, 11, 0.14);
  --crowd-high: #b91c1c;
  --crowd-high-bg: rgba(239, 68, 68, 0.14);
}

/* Custom Modern Dark Scrollbars across app */
* {
  scrollbar-width: thin;
  scrollbar-color: #334155 transparent;
}

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: #334155;
  border-radius: 9999px;
}

::-webkit-scrollbar-thumb:hover {
  background: #475569;
}

[hidden] { display: none !important; }
button, a, input, select, .tab-btn, .pill-btn, .btn, .banner-close-btn, .toggle-btn { touch-action: manipulation; }
button:disabled, input:disabled { opacity: 0.5; cursor: not-allowed; }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible { outline: 2px solid #38bdf8; outline-offset: 3px; }
.badge-secondary { background: #263246; color: #cbd5e1; }
.badge-info { background: rgba(56, 189, 248, 0.13); color: #38bdf8; }
.badge-active {
  background: rgba(16, 185, 129, 0.16);
  color: #34d399;
  border: 1px solid rgba(52, 211, 153, 0.35);
  font-weight: 700;
}
.badge-inactive {
  background: #1e293b;
  color: #94a3b8;
  border: 1px solid #334155;
}
.badge-stale {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(251, 191, 36, 0.35);
}

.live-dot-pulse {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: #10b981;
  margin-right: 6px;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: liveDotPulse 1.8s infinite cubic-bezier(0.66, 0, 0, 1);
  vertical-align: middle;
}
@keyframes liveDotPulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}
.connection-banner { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 14px 18px; border: 1px solid #34546b; border-radius: 10px; margin-bottom: 18px; font-size: 13px; background: #152638; color: #cbd5e1; }
.connection-banner.is-success { border-color: #1d614e; background: #102b29; }
.connection-banner.is-warning { border-color: #8c631d; background: #30271d; }
.connection-banner.is-error { border-color: #8d424a; background: #302028; }
.banner-close-btn {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: #94a3b8;
  width: 28px;
  height: 28px;
  min-width: 28px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  line-height: 1;
  cursor: pointer;
  transition: all 0.18s ease;
  padding: 0;
  margin-left: auto;
}
.banner-close-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #f8fafc;
  border-color: rgba(255, 255, 255, 0.32);
}
.banner-close-btn:active {
  transform: scale(0.92);
}
.source-attribution { display: flex; flex-wrap: wrap; gap: 4px 18px; margin: -4px 0 20px; font-size: 12px; color: var(--text-muted); }
.source-attribution a { color: #7dd3fc; text-underline-offset: 3px; }
.source-attribution p { flex-basis: 100%; }
.source-attribution .provider-warning { color: #fcd34d; }
.action-message { padding: 12px 16px; border-radius: 8px; margin-bottom: 18px; font-size: 13px; overflow-wrap: anywhere; }
.action-message.is-error { background: #302028; color: #fda4af; }
.action-message.is-success { background: #102b29; color: #6ee7b7; }
.poller-pill.is-idle .pulse-dot { animation: none; background: #94a3b8; }
.empty-state { padding: 32px 16px; color: #94a3b8; text-align: center; grid-column: 1 / -1; font-size: 13px; }
.data-note { color: #94a3b8; font-size: 13px; margin: 0 0 16px; }
.tooltip-row { display: flex; justify-content: space-between; gap: 18px; margin-top: 6px; }
.fleet-search-group { min-width: 230px; }
.fleet-search-group label { font-size: 12px; color: #94a3b8; display: block; margin-bottom: 5px; }
.fleet-summary-strip { display: flex; flex-wrap: wrap; gap: 20px; margin: 16px 0; padding: 12px 16px; background: #10192b; border: 1px solid #334155; border-radius: 8px; font-size: 13px; color: #94a3b8; }
.fleet-summary-strip strong { color: #f8fafc; }
.bus-card-status { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.bus-card-top { gap: 8px; flex-wrap: wrap; }
.bus-plate { overflow-wrap: anywhere; }
.bus-pax small { font-size: 11px; font-weight: 400; color: #94a3b8; }
.bus-meta-row { flex-wrap: wrap; gap: 4px; }
.last-seen { margin-top: 8px; }
.progress-bar-bg.is-unknown { background: repeating-linear-gradient(135deg, #263246, #263246 6px, #334155 6px, #334155 12px); }
.bus-marker-node.is-stale { opacity: 0.6; }
.legend-dot.unknown { background: #94a3b8; }
.form-select-sm { width: auto; padding: 6px 8px; font-size: 12px; }
.settings-actions { flex-wrap: wrap; }
.settings-grid form, .admin-token-group { margin-top: 20px; }
.advanced-settings { margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--border-color); }
.advanced-settings summary { color: var(--text-muted); font-size: 13px; font-weight: 600; cursor: pointer; }
.advanced-settings summary:focus-visible { outline: 2px solid #38bdf8; outline-offset: 4px; }
.diagnostics-table td { overflow-wrap: anywhere; }
.hourly-chart { margin-top: 16px; }
.btn-secondary.active { border-color: #38bdf8; background: #163753; color: #fff; }
@media (max-width: 768px) {
  .header-actions { flex-wrap: wrap; }
  .optimizer-grid, .settings-grid { grid-template-columns: minmax(0, 1fr) !important; }
  .route-comparison-cards { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; gap: 10px !important; }
  .panel { padding: 16px !important; }
  .chart-top-controls, .control-group, .date-picker-group { flex-wrap: wrap; }
  .toggle-group { flex-wrap: wrap; }
  .toggle-btn { padding: 6px 9px !important; }
  .fleet-search-group { width: 100%; min-width: 0; }
  .connection-banner { align-items: flex-start; }
  .leaflet-map-frame { height: 450px !important; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

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

html, body {
  overflow-x: hidden;
  max-width: 100vw;
  width: 100%;
}

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

/* Header */
.app-header {
  background: linear-gradient(180deg, #162137 0%, #10182b 100%);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 24px;
  padding: max(16px, env(safe-area-inset-top, 16px)) 24px 16px;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-logo {
  display: inline-flex;
  align-items: stretch;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 0.5px;
  line-height: 1;
  white-space: nowrap;
  user-select: none;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
}

.logo-nus {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--nus-blue);
  color: #ffffff;
  padding: 6px 10px;
  flex-shrink: 0;
  white-space: nowrap;
}

.logo-shuttle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--nus-orange);
  color: #ffffff;
  padding: 6px 10px;
  flex-shrink: 0;
  white-space: nowrap;
}

.brand-text h1 {
  font-size: 18px;
  font-weight: 700;
  color: #ffffff;
}

.subtitle {
  font-size: 12px;
  color: var(--text-muted);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Poller pill with live pulse */
.poller-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 6px 14px;
  border-radius: 9999px;
  font-size: 13px;
  font-family: 'JetBrains Mono', monospace;
  color: #38bdf8;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: #38bdf8;
  border-radius: 50%;
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--nus-orange);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: #d97000;
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--bg-card-hover);
  border-color: #475569;
}

.btn-danger {
  background-color: #991b1b;
  color: #fecaca;
  border: 1px solid #b91c1c;
}

.btn-danger:hover {
  background-color: #dc2626;
}

.btn-sm {
  padding: 4px 10px;
  font-size: 12px;
}

.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  user-select: none;
  transition: all 0.2s ease;
}

.theme-toggle-icon {
  font-size: 14px;
  line-height: 1;
}

/* Main Layout */
.main-layout {
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 24px 20px;
  padding: 24px 20px max(24px, env(safe-area-inset-bottom, 24px));
  flex: 1;
}

/* Top Metric Summary Cards */
.summary-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s, border-color 0.2s;
}

.metric-card:hover {
  border-color: #3b82f6;
  transform: translateY(-2px);
}


.metric-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.metric-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.metric-icon {
  font-size: 18px;
}

.metric-value {
  font-size: 28px;
  font-weight: 800;
  color: #ffffff;
  font-family: 'JetBrains Mono', monospace;
}

.metric-value-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.metric-subtext {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 4px;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
  line-height: 1.25;
}

.badge-success { background: var(--crowd-low-bg); color: var(--crowd-low); }
.badge-warning { background: var(--crowd-medium-bg); color: var(--crowd-medium); }
.badge-danger  { background: var(--crowd-high-bg); color: var(--crowd-high); }

/* Tab Navigation */
.tab-nav {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 24px;
  overflow-x: auto;
}

.tab-btn {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 12px 18px;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  transition: all 0.2s;
}

.tab-btn:hover {
  color: #ffffff;
}

.tab-btn.active {
  color: var(--nus-orange);
  border-bottom-color: var(--nus-orange);
}

/* Tab Contents */
.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Panels */
.panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 24px;
}

.panel-header-controls {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 18px;
}

.panel-title {
  font-size: 18px;
  font-weight: 700;
  color: #ffffff;
}

.panel-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Chart Top Controls Toolbar */
.chart-top-controls {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.date-picker-group {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 4px 10px;
}

.date-input {
  background: #0b0f19;
  border: 1px solid var(--border-color);
  color: #ffffff;
  padding: 4px 8px;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  outline: none;
  cursor: pointer;
}

.date-input:focus {
  border-color: #38bdf8;
}

/* Metric View Toggles (Exact vs Low/Med/High vs %) */
.control-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.control-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.toggle-group {
  display: flex;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 3px;
}

.toggle-btn {
  background: transparent;
  border: none;
  padding: 6px 14px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s;
}

.toggle-btn:hover {
  color: #ffffff;
}

.toggle-btn.active {
  background: var(--nus-blue);
  color: #ffffff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

/* Route Filter Bar */
.routes-filter-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.filter-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.route-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 12px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  color: var(--text-dim);
  transition: all 0.15s ease;
  user-select: none;
}

.route-pill-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--c, #94a3b8);
  opacity: 0.35;
  transition: all 0.15s ease;
  flex-shrink: 0;
}

.route-pill:hover {
  border-color: #475569;
  color: var(--text-muted);
}

.route-pill:hover .route-pill-dot {
  opacity: 0.65;
}

.route-pill.active {
  background: rgba(30, 41, 59, 0.7);
  background: color-mix(in srgb, var(--c, #38bdf8) 16%, #10182b);
  border-color: var(--c, #38bdf8);
  border-color: color-mix(in srgb, var(--c, #38bdf8) 60%, transparent);
  color: #ffffff;
  box-shadow: 0 0 10px color-mix(in srgb, var(--c, #38bdf8) 20%, transparent);
}

.route-pill.active .route-pill-dot {
  opacity: 1;
  box-shadow: 0 0 6px var(--c, #38bdf8);
}

.route-pill.active:hover {
  background: color-mix(in srgb, var(--c, #38bdf8) 24%, #10182b);
  border-color: var(--c, #38bdf8);
}

/* Timeline Navigation & Zoom Toolbar */
.timeline-nav-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 8px 12px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.nav-btn-group, .zoom-btn-group {
  display: flex;
  align-items: center;
  gap: 4px;
}

.chart-nav-btn, .chart-zoom-btn {
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: #182238;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  transition: all 0.15s ease;
}

.chart-nav-btn:hover, .chart-zoom-btn:hover {
  background: #243456;
  border-color: #38bdf8;
  color: #38bdf8;
}

.timeline-window-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: 9999px;
  color: #38bdf8;
  font-size: 11px;
  font-weight: 600;
  font-family: 'JetBrains Mono', monospace;
  white-space: nowrap;
}

.timeline-drag-hint {
  font-size: 11px;
  color: var(--text-dim);
  margin-left: auto;
  user-select: none;
}

canvas.is-zoomed {
  cursor: grab;
}

canvas.is-dragging {
  cursor: grabbing !important;
  user-select: none;
}

@media (max-width: 768px) {
  .timeline-drag-hint {
    display: none;
  }
}

/* Canvas Chart Area */
.chart-wrapper {
  position: relative;
  width: 100%;
  background: #0d1526;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px;
  overflow: hidden;
}

canvas {
  display: block;
  width: 100% !important;
  height: auto !important;
  cursor: crosshair;
}

/* Tooltip floating box */
.chart-tooltip {
  position: absolute;
  pointer-events: none;
  display: none;
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid #475569;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 12px;
  color: #ffffff;
  box-shadow: 0 8px 24px rgba(0,0,0,0.55);
  backdrop-filter: blur(8px);
  z-index: 50;
  min-width: 160px;
  max-width: calc(100% - 16px);
  box-sizing: border-box;
  white-space: nowrap;
}

.tooltip-raw {
  color: #94a3b8;
  font-size: 11px;
  margin-left: 4px;
}

/* Legend footer */
.chart-footer-legend {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border-color);
}

.legend-zones {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.zone-badge {
  font-size: 12px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px;
}

.zone-low { background: var(--crowd-low-bg); color: var(--crowd-low); }
.zone-medium { background: var(--crowd-medium-bg); color: var(--crowd-medium); }
.zone-high { background: var(--crowd-high-bg); color: var(--crowd-high); }

.legend-note {
  font-size: 12px;
  color: var(--text-dim);
}

/* Commute Optimizer */
.optimizer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr));
  gap: 16px;
  margin-bottom: 24px;
  width: 100%;
  max-width: 100%;
  min-width: 0;
}

.optimizer-grid > * {
  min-width: 0;
  max-width: 100%;
}

.windows-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 14px;
}

.window-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
}

.window-time {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 15px;
  color: #38bdf8;
}

.window-meta {
  font-size: 13px;
  color: var(--text-muted);
}

/* Route Comparison */
.route-comparison-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.comparison-box {
  background: linear-gradient(180deg, #182238 0%, #131b2e 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  box-sizing: border-box;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.comparison-box:hover {
  border-color: rgba(56, 189, 248, 0.35);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
  transform: translateY(-1px);
}

.comparison-header {
  font-weight: 700;
  font-size: 0.95rem;
  color: #ffffff;
  margin-bottom: 4px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  min-width: 0;
}

.comparison-metric-main {
  font-size: 0.9rem;
  color: #e2e8f0;
  line-height: 1.35;
}

.comparison-pct {
  font-size: 1.15rem;
  font-weight: 800;
  color: #f8fafc;
  font-family: 'JetBrains Mono', monospace;
  margin-right: 4px;
}

.comparison-pct-label {
  font-size: 0.82rem;
  color: #94a3b8;
}

.comparison-meta-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 2px;
}

.comparison-meta-group .window-meta {
  font-size: 0.74rem;
  color: #94a3b8;
  line-height: 1.35;
}

.comparison-option {
  margin-bottom: 14px;
  padding: 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
}

.option-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.option-route {
  font-weight: 700;
  font-size: 14px;
}

.option-rec {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.4;
  margin-top: 6px;
}

/* Fleet Grid */
.fleet-filter-bar {
  display: flex;
  gap: 6px;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.fleet-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.bus-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
  cursor: pointer;
  user-select: none;
  position: relative;
}

.bus-card:hover {
  transform: translateY(-3px);
  border-color: #3b82f6;
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.15);
}

.bus-card:focus-visible {
  outline: 2px solid #38bdf8;
  outline-offset: 2px;
}

.bus-card-active {
  border-top: 3px solid #10b981;
}

.bus-card-inactive {
  background: rgba(30, 41, 59, 0.4) !important;
  border: 1px dashed #334155 !important;
  opacity: 0.82;
}

.bus-card-inactive:hover {
  transform: translateY(-2px);
  border-color: #64748b !important;
  opacity: 0.98;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.35);
}

.bus-inactive-reason {
  margin-top: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  background: rgba(15, 23, 42, 0.65);
  border-left: 3px solid #64748b;
  font-size: 11.5px;
}
.bus-inactive-reason.reason-turnaround {
  border-left-color: #38bdf8;
  background: rgba(56, 189, 248, 0.08);
}
.bus-inactive-reason.reason-parked {
  border-left-color: #10b981;
  background: rgba(16, 185, 129, 0.08);
}
.bus-inactive-reason.reason-peak-end {
  border-left-color: #f59e0b;
  background: rgba(245, 158, 11, 0.08);
}
.bus-inactive-reason.reason-peak-route {
  border-left-color: #a855f7;
  background: rgba(168, 85, 247, 0.08);
}
.bus-inactive-reason.reason-overnight {
  border-left-color: #6366f1;
  background: rgba(99, 102, 241, 0.08);
}
.bus-inactive-reason.reason-signal {
  border-left-color: #ec4899;
  background: rgba(236, 72, 153, 0.08);
}

.inactive-reason-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 3px;
}
.inactive-reason-icon {
  font-size: 13px;
  line-height: 1;
}
.inactive-reason-title {
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 600;
}
.inactive-reason-desc {
  margin: 0;
  color: #94a3b8;
  font-size: 11px;
  line-height: 1.4;
}

.vehicle-inactive-banner {
  margin: 0;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  background: rgba(15, 23, 42, 0.85);
  border-left: 3px solid #64748b;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.vehicle-inactive-banner.reason-turnaround {
  border-left-color: #38bdf8;
  background: rgba(56, 189, 248, 0.1);
}
.vehicle-inactive-banner.reason-parked {
  border-left-color: #10b981;
  background: rgba(16, 185, 129, 0.1);
}
.vehicle-inactive-banner.reason-peak-end {
  border-left-color: #f59e0b;
  background: rgba(245, 158, 11, 0.1);
}
.vehicle-inactive-banner.reason-peak-route {
  border-left-color: #a855f7;
  background: rgba(168, 85, 247, 0.1);
}
.vehicle-inactive-banner.reason-overnight {
  border-left-color: #6366f1;
  background: rgba(99, 102, 241, 0.1);
}
.vehicle-inactive-banner.reason-signal {
  border-left-color: #ec4899;
  background: rgba(236, 72, 153, 0.1);
}

.bus-card-click-hint {
  display: block;
  font-size: 11px;
  color: #38bdf8;
  margin-top: 10px;
  text-align: right;
  opacity: 0.85;
  transition: opacity 0.2s;
}

.bus-card:hover .bus-card-click-hint {
  opacity: 1;
  text-decoration: underline;
}

.bus-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.bus-route-badge {
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-weight: 800;
  font-size: 14px;
}

.bus-plate {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--text-muted);
}

.bus-crowd-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 8px;
}

.bus-pax {
  font-size: 18px;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
}

.progress-bar-bg {
  width: 100%;
  height: 8px;
  background: #334155;
  border-radius: 9999px;
  overflow: hidden;
  margin-bottom: 12px;
}

.progress-bar-fill {
  height: 100%;
  border-radius: 9999px;
  transition: width 0.3s ease;
}

.bus-meta-row {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-dim);
}

/* Settings */
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 24px;
}

.diagnostics-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 13px;
}

.diagnostics-table td {
  padding: 10px 8px;
  border-bottom: 1px solid var(--border-color);
}

.diagnostics-table td:first-child {
  color: var(--text-muted);
  width: 45%;
}

.diagnostics-table code {
  font-family: 'JetBrains Mono', monospace;
  background: var(--bg-primary);
  padding: 2px 6px;
  border-radius: 4px;
  color: #38bdf8;
}

.settings-actions {
  display: flex;
  gap: 12px;
  margin-top: 18px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
}

.form-select, .form-input {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: #ffffff;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 14px;
}

.form-select:focus, .form-input:focus {
  outline: none;
  border-color: #38bdf8;
}

.form-hint {
  display: block;
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 5px;
}

/* Footer */
.app-footer {
  border-top: 1px solid var(--border-color);
  padding: 18px 24px;
  background: #080c14;
  font-size: 12px;
  color: var(--text-dim);
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-links {
  display: flex;
  gap: 10px;
  align-items: center;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: #38bdf8;
}

/* =========================================================================
 * COMPREHENSIVE RESPONSIVE STYLES (MOBILE & TABLET COMPATIBILITY)
 * ========================================================================= */
@media (max-width: 768px) {
  /* Header */
  .app-header {
    padding: 12px 14px;
  }
  .header-container {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }
  .brand {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
  }
  .brand-logo {
    font-size: 13px;
    flex-shrink: 0;
  }
  .logo-nus,
  .logo-shuttle {
    padding: 5px 8px;
    flex-shrink: 0;
  }
  .brand-text h1 {
    font-size: 16px;
    line-height: 1.2;
  }
  .subtitle {
    font-size: 11px;
  }
  .header-actions {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
  }
  .header-actions .btn,
  .header-actions a.btn {
    flex: 1 1 auto;
    text-align: center;
    justify-content: center;
    min-height: 38px;
    padding: 6px 12px;
    font-size: 12px;
  }
  .poller-pill {
    width: 100%;
    justify-content: center;
    min-height: 32px;
  }

  /* Main Layout & Banners */
  .main-layout {
    padding: 12px 10px;
  }
  .connection-banner {
    padding: 10px 14px;
    gap: 10px;
    font-size: 12px;
    align-items: center;
  }
  .source-attribution {
    font-size: 11px;
    margin: -2px 0 14px;
  }

  /* Metric Cards Grid - 2x2 Clean Mobile Presentation */
  .summary-cards-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    margin-bottom: 14px;
  }
  .metric-card {
    padding: 11px 13px;
    border-radius: 10px;
  }
  .metric-header {
    margin-bottom: 4px;
  }
  .metric-title {
    font-size: 10.5px;
    letter-spacing: 0.3px;
  }
  .metric-icon {
    font-size: 16px;
  }
  .metric-value {
    font-size: 21px;
  }
  .metric-subtext {
    font-size: 10.5px;
    line-height: 1.35;
    margin-top: 2px;
  }

  /* Tab Navigation - Smooth Touch Scroll & Segmented Pill Design */
  .tab-nav {
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 6px;
    margin-bottom: 16px;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--border-color);
  }
  .tab-nav::-webkit-scrollbar {
    display: none;
  }
  .tab-btn {
    padding: 9px 14px;
    font-size: 13px;
    min-height: 40px;
    border-radius: 8px;
    background: #141d30;
    border: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
  }
  .tab-btn.active {
    background: #182844;
    border-color: #38bdf8;
    color: #ffffff;
    box-shadow: 0 0 10px rgba(56, 189, 248, 0.18);
  }

  /* Panels */
  .panel {
    padding: 14px 12px;
    margin-bottom: 16px;
    border-radius: 10px;
  }
  .panel-header-controls {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }
  .panel-title {
    font-size: 16px;
  }
  .panel-subtitle {
    font-size: 12px;
  }
  .map-quick-stats {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    width: 100%;
  }
  .map-quick-stats .badge {
    flex: 1 1 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    white-space: nowrap;
    font-size: 11.5px;
    padding: 5px 10px;
  }
  .map-quick-stats #btnCenterCampus {
    flex: 1 1 100%;
    width: 100%;
    justify-content: center;
    min-height: 36px;
    font-size: 12px;
    display: flex;
    align-items: center;
  }

  /* Map Filter Bar & Viewport */
  .map-filter-bar {
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    gap: 10px;
  }
  .map-filter-group {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    gap: 6px;
  }
  .map-filter-label {
    align-self: flex-start;
    text-align: left;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
  }
  .map-route-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: flex-start;
    width: 100%;
  }
  .map-pill {
    padding: 5px 11px;
    font-size: 12px;
    min-height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 9999px;
  }
  .map-filter-group select {
    width: 100%;
    max-width: 100%;
    min-height: 38px;
    font-size: 13px;
  }
  .checkbox-group {
    margin-left: 0;
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    padding-top: 4px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }
  .checkbox-label {
    min-height: 36px;
    font-size: 13px;
  }
  .map-viewport-container {
    border-radius: 10px;
  }
  .leaflet-map-frame {
    height: 56vh !important;
    min-height: 350px;
    max-height: 520px;
  }
  .map-floating-legend {
    bottom: 8px !important;
    right: 8px !important;
    left: auto !important;
    max-width: calc(100% - 16px) !important;
    padding: 6px 9px !important;
    font-size: 10.5px !important;
    gap: 3px !important;
    z-index: 400 !important;
  }
  .map-popup-card {
    padding: 9px 11px;
    width: 250px;
    max-width: calc(100vw - 28px);
    min-width: 160px;
  }
  .map-popup-card.stop-popup {
    width: min(270px, calc(100vw - 28px));
  }
  .stop-popup-buses {
    max-height: 130px;
  }

  /* Fleet Grid */
  .fleet-filter-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }
  .fleet-search-group {
    width: 100%;
    min-width: 0;
  }
  .fleet-search-group input {
    min-height: 38px;
  }
  .fleet-filter-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
  }
  .fleet-filter-pills button {
    min-height: 34px;
    padding: 6px 10px;
  }
  .fleet-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .bus-card {
    padding: 12px 14px;
  }

  /* Charts & Optimizer */
  .optimizer-grid,
  .settings-grid {
    grid-template-columns: minmax(0, 1fr) !important;
    gap: 12px;
  }
  .route-comparison-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
    gap: 10px !important;
  }
  .comparison-box {
    padding: 12px 10px;
    border-radius: 10px;
    gap: 6px;
  }
  .comparison-header {
    font-size: 0.88rem;
    margin-bottom: 2px;
    padding-bottom: 6px;
  }
  .comparison-metric-main {
    font-size: 0.8rem;
    line-height: 1.25;
  }
  .comparison-pct {
    font-size: 1.05rem;
    display: block;
    margin-bottom: 2px;
  }
  .comparison-pct-label {
    font-size: 0.72rem;
  }
  .comparison-meta-group {
    gap: 2px;
  }
  .comparison-meta-group .window-meta {
    font-size: 0.68rem;
    line-height: 1.25;
  }
  .chart-top-controls,
  .control-group,
  .date-picker-group {
    flex-wrap: wrap;
    gap: 8px;
    width: 100%;
  }
  .date-picker-group select,
  .date-picker-group input {
    flex: 1 1 auto;
    min-height: 36px;
  }
  .toggle-group {
    flex-wrap: wrap;
    width: 100%;
  }
  .toggle-btn {
    flex: 1 1 auto;
    text-align: center;
    min-height: 34px;
    padding: 6px 10px !important;
  }
  .chart-wrapper {
    padding: 10px 8px;
  }
  .canvas-container {
    min-height: 200px;
  }
  .table-scroll-container,
  .diagnostics-table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    width: 100%;
  }

  /* Vehicle Modal Dialog Mobile */
  .vehicle-modal-backdrop {
    padding: 8px !important;
    align-items: center !important;
    justify-content: center !important;
    overflow: hidden !important;
  }
  .vehicle-modal-container {
    width: 100% !important;
    max-height: calc(100vh - 16px) !important;
    max-height: calc(100dvh - 16px) !important;
    border-radius: 10px !important;
    margin: 0 !important;
    display: flex !important;
    flex-direction: column !important;
    overflow: hidden !important;
  }
  .vehicle-modal-header {
    padding: 7px 10px !important;
    padding-right: 40px !important;
    gap: 6px !important;
  }
  .vehicle-modal-title {
    font-size: 14px !important;
  }
  .vehicle-modal-sub {
    font-size: 10px !important;
  }
  .vehicle-modal-badge {
    font-size: 12px !important;
    padding: 2px 7px !important;
  }
  .vehicle-modal-header-actions {
    gap: 4px !important;
  }
  .vehicle-modal-header-actions .badge {
    font-size: 9px !important;
    padding: 2px 6px !important;
  }
  .vehicle-modal-close {
    top: 7px !important;
    right: 8px !important;
    width: 26px !important;
    height: 26px !important;
    font-size: 13px !important;
  }
  .vehicle-metrics-strip {
    display: flex !important;
    flex-wrap: nowrap !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch;
    flex-shrink: 0 !important;
    gap: 5px !important;
    padding: 4px 6px !important;
    scrollbar-width: none;
    -ms-overflow-style: none;
    scroll-snap-type: x proximity;
  }
  .vehicle-metrics-strip::-webkit-scrollbar {
    display: none;
  }
  .vehicle-metric-item {
    flex: 0 0 auto !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: center !important;
    padding: 3px 6px !important;
    border-radius: 6px !important;
    min-width: max-content !important;
    min-height: 32px !important;
    max-width: none !important;
    scroll-snap-align: start;
    background: rgba(24, 34, 56, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.08);
  }
  .vehicle-metric-label {
    font-size: 7.5px !important;
    letter-spacing: 0.25px;
    white-space: nowrap;
  }
  .vehicle-metric-val {
    font-size: 10.5px !important;
    white-space: nowrap;
  }
  .vehicle-modal-body {
    padding: 6px 8px 10px !important;
    gap: 6px !important;
    min-height: 0 !important;
    flex: 1 1 auto !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
    -webkit-overflow-scrolling: touch;
  }
  .vehicle-dashboard-grid {
    grid-template-columns: 1fr !important;
    gap: 6px !important;
  }
  .vehicle-dashboard-col {
    padding: 7px 8px !important;
    gap: 5px !important;
  }
  .vehicle-col-header {
    display: flex !important;
    flex-direction: row !important;
    justify-content: space-between !important;
    align-items: center !important;
    flex-wrap: wrap !important;
    gap: 6px !important;
    min-height: 22px;
  }
  .vehicle-col-header > div:first-child {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    min-width: 0;
  }
  .vehicle-col-title {
    font-size: 11.5px !important;
    text-align: left !important;
  }
  .vehicle-col-sub {
    font-size: 9.5px !important;
    text-align: left !important;
  }
  .vehicle-chart-controls {
    display: flex !important;
    align-items: center !important;
    flex-wrap: wrap !important;
    gap: 4px !important;
    flex-shrink: 0 !important;
  }
  .vehicle-chart-controls .toggle-group {
    width: auto !important;
    display: inline-flex !important;
    flex-wrap: nowrap !important;
    padding: 1px !important;
    gap: 1px !important;
  }
  .vehicle-chart-controls .toggle-btn {
    flex: 0 0 auto !important;
    min-height: 20px !important;
    height: 20px !important;
    padding: 2px 6px !important;
    font-size: 9.5px !important;
    text-align: center !important;
  }
  .vehicle-col-header .btn-sm {
    height: 20px !important;
    padding: 2px 6px !important;
    font-size: 9.5px !important;
    flex-shrink: 0 !important;
  }
  .vehicle-map-wrapper {
    min-height: 135px !important;
    height: 135px !important;
  }
  .vehicle-leaflet-map {
    min-height: 135px !important;
    height: 135px !important;
  }
  .vehicle-chart-wrapper {
    min-height: 120px !important;
    height: 120px !important;
    padding: 4px 6px !important;
  }
  .vehicle-hourly-section {
    padding: 7px 8px !important;
    gap: 5px !important;
  }
  .vehicle-hourly-chart-wrapper {
    min-height: 60px !important;
    padding: 4px 6px !important;
  }
  .vehicle-stops-section {
    padding: 7px 8px !important;
    gap: 5px !important;
  }
  .stop-progression-wrapper {
    max-height: 180px !important;
    gap: 5px !important;
  }
  .stop-progression-card {
    padding: 5px 7px !important;
    gap: 3px !important;
  }
  .vehicle-chart-stats,
  .vehicle-route-stats,
  .vehicle-hourly-stats {
    font-size: 9px !important;
    gap: 4px !important;
  }
}

@media (max-width: 480px) {
  /* Ultra-polished compact mobile layout for 320-480px screens */
  .main-layout {
    padding: 10px 8px;
  }
  .summary-cards-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    margin-bottom: 12px;
  }
  .metric-card {
    padding: 10px 10px;
    border-radius: 10px;
  }
  .metric-header {
    margin-bottom: 4px;
  }
  .metric-title {
    font-size: 10px;
    letter-spacing: 0.2px;
  }
  .metric-icon {
    font-size: 15px;
  }
  .metric-value {
    font-size: 19px;
  }
  .metric-subtext {
    font-size: 10px;
    line-height: 1.3;
    margin-top: 2px;
  }
  .metric-value-row {
    flex-wrap: wrap;
    gap: 4px;
    align-items: baseline;
  }
  .metric-value-row .badge {
    font-size: 10px;
    padding: 1px 6px;
  }
  .brand-text h1 {
    font-size: 15px;
  }
  .header-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
  }
  .poller-pill {
    width: 100%;
    min-height: 32px;
    font-size: 12px;
    padding: 4px 10px;
  }
  .header-actions .btn,
  .header-actions a.btn {
    flex: 1 1 calc(50% - 4px);
    min-height: 38px;
    padding: 6px 8px;
    font-size: 12px;
  }
  .panel {
    padding: 12px 10px;
    border-radius: 10px;
    margin-bottom: 12px;
  }
  .panel-title {
    font-size: 15px;
  }
  .panel-subtitle {
    font-size: 11.5px;
  }
  .surge-windows-container {
    grid-template-columns: 1fr !important;
    gap: 10px;
  }
  .surge-time {
    font-size: 0.88rem;
  }
  .surge-magnitude {
    font-size: 0.74rem;
    padding: 2px 6px;
  }
  .surge-live-badge {
    font-size: 0.68rem;
    padding: 2px 7px;
  }
  .surge-pill-tag {
    font-size: 0.68rem;
    padding: 2px 6px;
  }
  .surge-tip {
    font-size: 0.72rem;
    padding: 6px 8px;
  }
  .transit-insights-grid {
    grid-template-columns: 1fr !important;
    gap: 12px;
  }
  .leaderboard-item,
  .segment-item {
    padding: 10px 10px;
    gap: 8px;
  }
  .leaderboard-stop-name {
    font-size: 0.82rem;
  }
  .leaderboard-dwell-val {
    font-size: 0.88rem;
  }
  .segment-corridor-name {
    font-size: 0.78rem;
  }
  .segment-duration {
    font-size: 0.84rem;
  }
  .fleet-summary-strip {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
    padding: 10px 12px;
    font-size: 11.5px;
  }
  .vehicle-metrics-strip {
    display: flex !important;
    flex-wrap: nowrap !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch;
    flex-shrink: 0 !important;
    gap: 4px !important;
    padding: 3px 6px !important;
    scrollbar-width: none;
    -ms-overflow-style: none;
    scroll-snap-type: x proximity;
  }
  .vehicle-metrics-strip::-webkit-scrollbar {
    display: none;
  }
  .vehicle-metric-item {
    flex: 0 0 auto !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: center !important;
    padding: 2px 6px !important;
    border-radius: 6px !important;
    min-width: max-content !important;
    min-height: 30px !important;
    max-width: none !important;
    scroll-snap-align: start;
    background: rgba(24, 34, 56, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.08);
  }
  .vehicle-metric-label {
    font-size: 7px !important;
    letter-spacing: 0.2px;
    white-space: nowrap;
  }
  .vehicle-metric-val {
    font-size: 10px !important;
    white-space: nowrap;
  }
  .leaflet-map-frame {
    height: 54vh !important;
    min-height: 330px;
    max-height: 490px;
  }
  .map-floating-legend {
    font-size: 10px !important;
    padding: 5px 7px !important;
    bottom: 6px !important;
    right: 6px !important;
    left: auto !important;
    max-width: calc(100% - 12px) !important;
    z-index: 400 !important;
  }
  .map-popup-card {
    padding: 8px 10px;
    width: 240px;
    max-width: calc(100vw - 20px);
    min-width: 150px;
  }
  .map-popup-card.stop-popup {
    width: min(250px, calc(100vw - 20px));
  }
  .stop-popup-buses {
    max-height: 110px;
  }
  .timeline-nav-toolbar {
    gap: 8px;
    padding: 6px 8px;
  }
  .chart-nav-btn, .chart-zoom-btn {
    padding: 4px 8px;
    font-size: 11px;
    min-height: 34px;
  }
  .timeline-window-badge {
    font-size: 10px;
    padding: 2px 8px;
  }
  .map-quick-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    width: 100%;
    margin-top: 6px;
  }
  .map-quick-stats .badge {
    flex: 1 1 calc(50% - 3px);
    font-size: 10.5px;
    padding: 5px 6px;
    min-height: 28px;
    text-align: center;
    justify-content: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .map-quick-stats #btnCenterCampus {
    flex: 1 1 100%;
    width: 100%;
    justify-content: center;
    min-height: 36px;
    font-size: 12px;
    display: flex;
    align-items: center;
  }
  .route-comparison-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
    gap: 8px !important;
  }
  .comparison-box {
    padding: 10px 9px;
    border-radius: 9px;
  }
  .comparison-header {
    font-size: 0.82rem;
    padding-bottom: 5px;
  }
  .comparison-pct {
    font-size: 1rem;
  }
  .comparison-pct-label {
    font-size: 0.69rem;
  }
  .comparison-meta-group .window-meta {
    font-size: 0.66rem;
    line-height: 1.25;
  }
}

@media (max-width: 340px) {
  .route-comparison-cards {
    grid-template-columns: 1fr !important;
  }
}

/* =========================================================================
 * LIVE CAMPUS MAP & LEAFLET COMPONENT STYLES
 * ========================================================================= */
.map-quick-stats {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.map-quick-stats .badge {
  white-space: nowrap;
  font-size: 11.5px;
  padding: 4px 10px;
}

.map-quick-stats #btnCenterCampus {
  white-space: nowrap;
  font-size: 12px;
  padding: 5px 12px;
  margin-left: auto;
}

.map-filter-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  margin-bottom: 16px;
}

.map-filter-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.map-filter-label {
  font-size: 11.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  white-space: nowrap;
  text-align: left;
}

.map-route-pills {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-start;
}

.map-pill {
  padding: 5px 12px;
  border-radius: 9999px;
  font-size: 11.5px;
  font-weight: 700;
  background-color: #1a2438;
  color: #cbd5e1;
  border: 1px solid #2b3952;
  cursor: pointer;
  transition: all 0.15s ease;
  line-height: 1.2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  user-select: none;
}

.map-pill:hover {
  border-color: #64748b;
  color: #ffffff;
}

.map-pill.active {
  background: color-mix(in srgb, var(--c, #38bdf8) 25%, #1e293b);
  border-color: var(--c, #38bdf8);
  color: #ffffff;
  box-shadow: 0 0 10px color-mix(in srgb, var(--c, #38bdf8) 35%, transparent);
}

.checkbox-group {
  margin-left: auto;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
}

.checkbox-label input[type="checkbox"] {
  cursor: pointer;
  accent-color: #38bdf8;
}

/* Map Viewport */
.map-viewport-container {
  position: relative;
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.leaflet-map-frame {
  width: 100%;
  height: 600px;
  background-color: #0b0f19;
}

/* Leaflet Dark Theme Overrides */
.leaflet-container {
  background-color: #0b0f19 !important;
  font-family: inherit !important;
}

.leaflet-bar {
  border: 1px solid #334155 !important;
  border-radius: 6px !important;
  overflow: hidden !important;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5) !important;
}

.leaflet-bar a {
  background-color: #1e293b !important;
  color: #cbd5e1 !important;
  border-bottom: 1px solid #334155 !important;
}

.leaflet-bar a:last-child {
  border-bottom: none !important;
}

.leaflet-bar a:hover {
  background-color: #334155 !important;
  color: #38bdf8 !important;
}

.leaflet-control-attribution {
  display: none !important;
}

/* Map Custom Bus Marker */
.leaflet-marker-icon.bus-custom-marker {
  background: transparent !important;
  border: none !important;
}

.leaflet-marker-icon.bus-in-motion {
  z-index: 1000 !important;
}

.leaflet-marker-icon.bus-in-motion .bus-marker-node {
  filter: drop-shadow(0 0 8px rgba(56, 189, 248, 0.75));
}

.bus-marker-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  position: relative;
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.bus-marker-node:hover {
  transform: scale(1.2);
  z-index: 9999 !important;
}

.bus-marker-badge {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 3px 7px;
  border-radius: 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 800;
  color: #ffffff;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.6);
  border: 1.5px solid #ffffff;
  position: relative;
  z-index: 2;
}

.bus-marker-icon-svg {
  width: 12px;
  height: 12px;
  fill: currentColor;
}

.bus-plate-subtext {
  font-size: 9px;
  font-family: 'JetBrains Mono', monospace;
  background-color: rgba(11, 15, 25, 0.9);
  padding: 1px 4px;
  border-radius: 4px;
  color: #e2e8f0;
  margin-top: 2px;
  border: 0.5px solid #334155;
  white-space: nowrap;
  box-shadow: 0 2px 4px rgba(0,0,0,0.5);
  z-index: 2;
}

/* Pulsing Radar Ring */
.bus-radar-pulse {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 1;
  animation: busRadarPulse 2.2s infinite ease-out;
}

@keyframes busRadarPulse {
  0% {
    transform: translate(-50%, -50%) scale(0.6);
    opacity: 0.85;
  }
  70% {
    transform: translate(-50%, -50%) scale(1.9);
    opacity: 0;
  }
  100% {
    transform: translate(-50%, -50%) scale(1.9);
    opacity: 0;
  }
}

.bus-radar-pulse.pulse-green {
  background-color: rgba(16, 185, 129, 0.35);
  border: 1.5px solid #10b981;
}

.bus-radar-pulse.pulse-yellow {
  background-color: rgba(245, 158, 11, 0.35);
  border: 1.5px solid #f59e0b;
}

.bus-radar-pulse.pulse-red {
  background-color: rgba(239, 68, 68, 0.35);
  border: 1.5px solid #ef4444;
}

.bus-stop-pin {
  width: 11px;
  height: 11px;
  background-color: #38bdf8;
  border: 2px solid #ffffff;
  border-radius: 50%;
  box-shadow: 0 0 6px rgba(56, 189, 248, 0.7);
  cursor: pointer;
  transition: transform 0.18s ease, opacity 0.2s ease, box-shadow 0.2s ease;
}

.bus-stop-pin:hover {
  transform: scale(1.4);
  background-color: #0284c7;
}

.bus-stop-pin.active-route-stop {
  width: 13px;
  height: 13px;
  background-color: var(--c, #38bdf8);
  border: 2px solid #ffffff;
  box-shadow: 0 0 8px var(--c, #38bdf8), 0 0 16px var(--c, #38bdf8);
  transform: scale(1.15);
  z-index: 500;
}

.bus-stop-pin.dimmed-route-stop {
  opacity: 0.35;
  transform: scale(0.85);
  box-shadow: none;
}

.map-popup-sub {
  margin: 4px 0 0 0;
  font-size: 11px;
  color: var(--text-muted);
}

.leaflet-route-tooltip {
  background: rgba(15, 23, 42, 0.94) !important;
  backdrop-filter: blur(8px) !important;
  border: 1px solid #334155 !important;
  border-radius: 8px !important;
  color: #f1f5f9 !important;
  font-family: 'JetBrains Mono', monospace !important;
  font-size: 11px !important;
  padding: 4px 8px !important;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.55) !important;
}

.leaflet-route-tooltip::before {
  border-top-color: rgba(15, 23, 42, 0.94) !important;
}

.route-trace-legend {
  padding-top: 5px;
  margin-top: 6px;
  border-top: 1px solid rgba(51, 65, 85, 0.6);
  font-weight: 600;
}

.legend-line {
  display: inline-block;
  width: 14px;
  height: 4px;
  border-radius: 2px;
  background-color: var(--c, #38bdf8);
  box-shadow: 0 0 6px var(--c, #38bdf8);
  flex-shrink: 0;
}

/* Map Floating Legend */
.map-floating-legend {
  position: absolute;
  bottom: 16px;
  left: 16px;
  background: rgba(15, 23, 42, 0.88);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  z-index: 400;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.5);
  pointer-events: none;
}

.legend-title {
  font-size: 11px;
  font-weight: 700;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.legend-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  color: #cbd5e1;
  margin-top: 3px;
}

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.legend-dot.green {
  background-color: #10b981;
}

.legend-dot.yellow {
  background-color: #f59e0b;
}

.legend-dot.red {
  background-color: #ef4444;
}

/* Leaflet Custom Popup Styling */
.leaflet-popup-content-wrapper {
  background: #131b2e !important;
  color: #f8fafc !important;
  border: 1px solid #334155;
  border-radius: 10px !important;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6) !important;
  padding: 0 !important;
  overflow: hidden !important;
  box-sizing: border-box !important;
}

.leaflet-popup-tip {
  background: #131b2e !important;
}

.leaflet-container a.leaflet-popup-close-button {
  color: #94a3b8 !important;
  padding: 6px 8px 0 0 !important;
  font-size: 16px !important;
  font-weight: 700 !important;
  z-index: 20;
}

.leaflet-container a.leaflet-popup-close-button:hover {
  color: #ffffff !important;
}

.leaflet-popup-content {
  margin: 0 !important;
  line-height: 1.4 !important;
  max-height: min(280px, 50vh) !important;
  overflow-y: auto !important;
  overflow-x: hidden !important;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: #334155 transparent;
  box-sizing: border-box !important;
}

.map-popup-card {
  padding: 11px 13px;
  width: 260px;
  max-width: calc(100vw - 32px);
  min-width: 180px;
  box-sizing: border-box;
}

.map-popup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  border-bottom: 1px solid #273553;
  padding-bottom: 6px;
  margin-bottom: 6px;
  padding-right: 20px;
}

.map-popup-route {
  padding: 2px 7px;
  border-radius: 5px;
  font-weight: 700;
  font-size: 11.5px;
  color: #ffffff;
}

.map-popup-plate {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 12.5px;
  color: #f8fafc;
}

.map-popup-pax-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 5px;
}

.map-popup-pax-val {
  font-size: 13.5px;
  font-weight: 700;
  color: #ffffff;
}

.map-popup-occ-pct {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 12px;
}

.map-popup-progress {
  width: 100%;
  height: 5px;
  background-color: #273553;
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 6px;
}

.map-popup-progress-fill {
  height: 100%;
  border-radius: 3px;
}

.map-popup-meta {
  display: flex;
  justify-content: space-between;
  font-size: 10.5px;
  color: #94a3b8;
}

.map-popup-action {
  margin-top: 8px;
  padding-top: 6px;
  border-top: 1px solid #273553;
  text-align: right;
}

.map-popup-action .btn {
  width: 100%;
}

/* Vehicle Combined Dashboard Modal */
.vehicle-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(8, 12, 22, 0.82);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  transition: opacity 0.2s ease;
  box-sizing: border-box;
}

.vehicle-modal-backdrop[hidden] {
  display: none !important;
}

.vehicle-modal-container {
  background: #0f172a;
  border: 1px solid #334155;
  border-radius: var(--radius-lg, 12px);
  width: 100%;
  max-width: 960px;
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(255, 255, 255, 0.05);
  animation: vehicleModalFadeIn 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  box-sizing: border-box;
  position: relative;
}

@keyframes vehicleModalFadeIn {
  from { opacity: 0; transform: scale(0.96) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.vehicle-modal-header {
  position: relative;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  padding: 9px 14px;
  padding-right: 48px;
  background: #131d35;
  border-bottom: 1px solid #273553;
  gap: 10px;
  flex-wrap: wrap;
  flex-shrink: 0;
  box-sizing: border-box;
}

.vehicle-modal-identity {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.vehicle-modal-badge {
  font-size: 13px;
  font-weight: 800;
  padding: 3px 9px;
  border-radius: 6px;
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
  flex-shrink: 0;
}

.vehicle-modal-title {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: #f8fafc;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: -0.3px;
  line-height: 1.2;
}

.vehicle-modal-sub {
  margin: 1px 0 0 0;
  font-size: 10.5px;
  color: #94a3b8;
  line-height: 1.25;
}

.vehicle-modal-header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.vehicle-modal-header-actions .badge {
  font-size: 10px;
  padding: 2px 7px;
  white-space: nowrap;
}

.vehicle-modal-close {
  position: absolute;
  top: 9px;
  right: 12px;
  background: rgba(30, 41, 59, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #cbd5e1;
  font-size: 14px;
  font-weight: 700;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease;
  z-index: 20;
  padding: 0;
  line-height: 1;
  flex-shrink: 0;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

.vehicle-modal-close:hover {
  background: #ef4444;
  color: #ffffff;
  border-color: #ef4444;
  transform: scale(1.05);
}

.vehicle-modal-close:active {
  transform: scale(0.95);
}

/* Quick Metrics Strip */
.vehicle-metrics-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 6px;
  padding: 6px 14px;
  background: rgba(15, 23, 42, 0.7);
  border-bottom: 1px solid #273553;
  min-width: 0;
  box-sizing: border-box;
  flex-shrink: 0;
}

.vehicle-metric-item {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1px;
  background: rgba(30, 41, 59, 0.4);
  border: 1px solid rgba(51, 65, 85, 0.5);
  border-radius: 6px;
  padding: 3px 8px;
  min-width: 0;
  min-height: 36px;
  flex-shrink: 0;
  overflow: hidden;
  box-sizing: border-box;
}

.vehicle-metric-label {
  font-size: 8px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: #64748b;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.vehicle-metric-val {
  font-size: 11.5px;
  font-weight: 700;
  color: #f1f5f9;
  font-family: 'JetBrains Mono', monospace;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

@media (max-width: 768px) {
  .vehicle-metrics-strip {
    display: flex !important;
    flex-wrap: nowrap !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch;
    flex-shrink: 0 !important;
    gap: 5px !important;
    padding: 4px 6px !important;
    scrollbar-width: none;
    -ms-overflow-style: none;
    scroll-snap-type: x proximity;
  }
  .vehicle-metrics-strip::-webkit-scrollbar {
    display: none;
  }
  .vehicle-metric-item {
    flex: 0 0 auto !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: center !important;
    padding: 3px 6px !important;
    border-radius: 6px !important;
    min-width: max-content !important;
    min-height: 32px !important;
    max-width: none !important;
    scroll-snap-align: start;
    background: rgba(24, 34, 56, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.08);
  }
  .vehicle-metric-label {
    font-size: 7.5px !important;
    letter-spacing: 0.25px;
    white-space: nowrap;
  }
  .vehicle-metric-val {
    font-size: 10.5px !important;
    white-space: nowrap;
  }
}

@media (max-width: 480px) {
  .vehicle-metrics-strip {
    display: flex !important;
    flex-wrap: nowrap !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch;
    flex-shrink: 0 !important;
    gap: 4px !important;
    padding: 3px 6px !important;
    scrollbar-width: none;
    -ms-overflow-style: none;
    scroll-snap-type: x proximity;
  }
  .vehicle-metrics-strip::-webkit-scrollbar {
    display: none;
  }
  .vehicle-metric-item {
    flex: 0 0 auto !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: center !important;
    padding: 2px 6px !important;
    border-radius: 6px !important;
    min-width: max-content !important;
    min-height: 30px !important;
    max-width: none !important;
    scroll-snap-align: start;
    background: rgba(24, 34, 56, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.08);
  }
  .vehicle-metric-label {
    font-size: 7px !important;
    letter-spacing: 0.2px;
    white-space: nowrap;
  }
  .vehicle-metric-val {
    font-size: 10px !important;
    white-space: nowrap;
  }
}

/* Modal Scrollable Body */
.vehicle-modal-body {
  overflow-y: auto;
  overflow-x: hidden;
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 10px 14px 14px;
  scrollbar-width: thin;
  scrollbar-color: #334155 #0f172a;
  -webkit-overflow-scrolling: touch;
}

.vehicle-modal-body::-webkit-scrollbar {
  width: 5px;
}

.vehicle-modal-body::-webkit-scrollbar-track {
  background: #0f172a;
}

.vehicle-modal-body::-webkit-scrollbar-thumb {
  background: #334155;
  border-radius: 4px;
}

.vehicle-modal-body::-webkit-scrollbar-thumb:hover {
  background: #475569;
}

/* Combined Dual Grid Layout */
.vehicle-dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 0;
  padding: 0;
  overflow: visible;
}

@media (max-width: 860px) {
  .vehicle-dashboard-grid {
    grid-template-columns: 1fr;
  }
}

.vehicle-dashboard-col {
  background: #131b2e;
  border: 1px solid #273553;
  border-radius: 8px;
  padding: 9px 11px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.vehicle-col-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  min-height: 26px;
}

.vehicle-col-title {
  margin: 0;
  font-size: 12.5px;
  font-weight: 700;
  color: #f1f5f9;
}

.vehicle-col-sub {
  margin: 1px 0 0 0;
  font-size: 10px;
  color: #94a3b8;
}

.vehicle-chart-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.vehicle-chart-controls .toggle-group {
  display: inline-flex;
  align-items: center;
  background: #0b0f19;
  border: 1px solid #273553;
  border-radius: 5px;
  padding: 2px;
  gap: 2px;
}

.vehicle-chart-controls .toggle-btn {
  background: transparent;
  border: none;
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 600;
  color: #94a3b8;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.vehicle-chart-controls .toggle-btn:hover {
  color: #ffffff;
}

.vehicle-chart-controls .toggle-btn.active {
  background: var(--nus-blue);
  color: #ffffff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

.vehicle-col-header .btn-sm {
  padding: 2px 8px;
  font-size: 10px;
  font-weight: 600;
  white-space: nowrap;
  border-color: #273553;
  background: #1e293b;
  color: #cbd5e1;
  border-radius: 5px;
  height: 22px;
  display: inline-flex;
  align-items: center;
}

.vehicle-col-header .btn-sm:hover {
  background: #334155;
  color: #ffffff;
  border-color: #475569;
}

.vehicle-map-wrapper {
  position: relative;
  flex: 1;
  min-height: 165px;
  height: 165px;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid #273553;
  background: #0a0f1d;
}

.vehicle-leaflet-map {
  width: 100%;
  height: 100%;
  min-height: 165px;
  background: #0a0f1d;
}

/* Dark Basemap Tiles Filter: Clean Neutral Slate/Navy (No Muddy Olive or Yellow) */
.map-tiles-dark {
  filter: grayscale(100%) invert(92%) contrast(115%) brightness(75%);
}

.leaflet-container {
  background: #0b1120 !important;
}

.vehicle-map-overlay-banner {
  position: absolute;
  top: 8px;
  left: 8px;
  right: 8px;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(6px);
  border: 1px solid #334155;
  border-radius: 5px;
  padding: 4px 8px;
  font-size: 10px;
  color: #cbd5e1;
  z-index: 500;
}

.vehicle-chart-wrapper {
  position: relative;
  flex: 1;
  min-height: 155px;
  background: #0c1222;
  border: 1px solid #273553;
  border-radius: 6px;
  padding: 6px 8px 4px;
}

.vehicle-chart-stats,
.vehicle-route-stats {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
  font-size: 9.5px;
  color: #94a3b8;
  font-family: 'JetBrains Mono', monospace;
  padding: 4px 2px 0;
  border-top: 1px solid #273553;
}

/* Pulsing Active Bus Marker on Vehicle Map */
.bus-marker-detail-pulsing {
  position: relative;
}

.bus-marker-detail-pulsing::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 48px;
  height: 48px;
  margin-top: -24px;
  margin-left: -24px;
  border-radius: 50%;
  border: 2px solid var(--c, #38bdf8);
  animation: busPulseRing 1.8s infinite ease-out;
  pointer-events: none;
}

@keyframes busPulseRing {
  0% { transform: scale(0.5); opacity: 0.9; }
  100% { transform: scale(1.6); opacity: 0; }
}

/* Vehicle Observed Hourly Occupancy Section */
.vehicle-hourly-section {
  background: #131b2e;
  border: 1px solid #273553;
  border-radius: 8px;
  padding: 9px 11px;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.vehicle-hourly-chart-wrapper {
  position: relative;
  background: #0c1222;
  border: 1px solid #273553;
  border-radius: 6px;
  padding: 4px 8px 2px;
  min-height: 70px;
}

.vehicle-hourly-stats {
  border-top: none;
  padding: 0;
  gap: 8px;
}

/* Vehicle Stops & Crowd Progression */
.vehicle-stops-section {
  background: #131b2e;
  border: 1px solid #273553;
  border-radius: 8px;
  padding: 9px 11px;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
}


.vehicle-stops-stats {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  min-width: 0;
  max-width: 100%;
}

#vehicleStopsCurrentNearest {
  white-space: normal;
  word-break: break-word;
  line-height: 1.3;
  padding: 3px 8px;
  max-width: 100%;
  font-size: 0.72rem;
  box-sizing: border-box;
}

#vehicleStopsTotalCount {
  white-space: nowrap;
  flex-shrink: 0;
  font-size: 0.72rem;
  padding: 3px 7px;
}

.stop-progression-wrapper {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr));
  gap: 6px;
  max-height: 220px;
  overflow-y: auto;
  padding-right: 4px;
  min-width: 0;
  max-width: 100%;
}

.stop-progression-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: #0c1222;
  border: 2px solid #273553;
  border-radius: 6px;
  padding: 6px 9px;
  transition: all 0.15s ease;
  position: relative;
  min-width: 0;
  box-sizing: border-box;
}

.stop-progression-card:hover {
  border-color: #38bdf8;
  background: #10182b;
}

.stop-progression-card.is-at-stop {
  border-color: #10b981;
  background: rgba(16, 185, 129, 0.12);
  box-shadow: 0 0 0 1px #10b981, 0 3px 12px rgba(16, 185, 129, 0.25);
}

.stop-progression-card.is-at-stop:hover {
  border-color: #34d399;
  background: rgba(16, 185, 129, 0.16);
}

.stop-progression-card.is-at-stop .stop-seq-badge {
  background: #10b981;
  color: #ffffff;
}

.stop-progression-card.is-approaching {
  border-color: #38bdf8;
  background: rgba(56, 189, 248, 0.12);
  box-shadow: 0 0 0 1px #38bdf8, 0 3px 12px rgba(56, 189, 248, 0.25);
}

.stop-progression-card.is-approaching:hover {
  border-color: #7dd3fc;
  background: rgba(56, 189, 248, 0.16);
}

.stop-progression-card.is-approaching .stop-seq-badge {
  background: #0284c7;
  color: #ffffff;
}

.stop-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  min-width: 0;
}

.stop-card-seq-name {
  display: flex;
  align-items: flex-start;
  gap: 7px;
  flex: 1 1 auto;
  min-width: 0;
}

.stop-seq-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #1e293b;
  color: #94a3b8;
  font-size: 0.72rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

.stop-card-name {
  font-size: 0.82rem;
  font-weight: 600;
  color: #e2e8f0;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  word-break: break-word;
  min-width: 0;
}

.stop-card-status-badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
  white-space: nowrap;
  flex-shrink: 0;
  margin-top: 1px;
}

.stop-card-status-badge.status-at-stop {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.4);
}

.stop-card-status-badge.status-approaching {
  background: rgba(56, 189, 248, 0.2);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.4);
}

.stop-card-status-badge.status-upcoming {
  background: rgba(100, 116, 139, 0.2);
  color: #94a3b8;
  border: 1px solid rgba(100, 116, 139, 0.3);
}

.stop-card-telemetry {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  color: #94a3b8;
  padding-top: 4px;
  border-top: 1px solid rgba(39, 53, 83, 0.6);
}

.stop-card-crowd-strip {
  display: flex;
  align-items: center;
  gap: 6px;
}

.stop-card-dist {
  font-size: 0.72rem;
  color: #64748b;
}

.stop-card-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  font-size: 0.72rem;
  padding-top: 2px;
}

.stop-card-time {
  font-size: 0.68rem;
  color: #64748b;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.stop-card-time.is-live {
  color: #34d399;
  font-weight: 600;
}

.stop-card-time.is-unvisited {
  color: #64748b;
  font-style: italic;
}

.stop-card-set-btn {
  background: transparent;
  border: 1px solid rgba(71, 85, 105, 0.4);
  color: #94a3b8;
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 0.68rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  flex-shrink: 0;
  opacity: 0.8;
}

.stop-card-set-btn:hover {
  background: rgba(56, 189, 248, 0.15);
  border-color: #38bdf8;
  color: #38bdf8;
  opacity: 1;
}

.badge-muted {
  background: rgba(71, 85, 105, 0.25);
  color: #94a3b8;
  border: 1px solid rgba(71, 85, 105, 0.4);
}

/* Leaflet Dark Popup Container Overrides */
.leaflet-popup-content-wrapper {
  background: #0d1526 !important;
  color: #f1f5f9 !important;
  border: 1px solid #273553 !important;
  border-radius: 12px !important;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.65) !important;
  padding: 0 !important;
  overflow: hidden !important;
  box-sizing: border-box !important;
}

.leaflet-popup-content {
  margin: 0 !important;
  line-height: 1.4 !important;
  max-height: min(280px, 50vh) !important;
  overflow-y: auto !important;
  overflow-x: hidden !important;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: #334155 transparent;
  box-sizing: border-box !important;
}

.leaflet-popup-tip {
  background: #0d1526 !important;
  border: 1px solid #273553 !important;
  box-shadow: none !important;
}

.leaflet-container a.leaflet-popup-close-button {
  color: #94a3b8 !important;
  padding: 6px 10px 0 0 !important;
  font-size: 18px !important;
  font-weight: 700 !important;
  text-decoration: none !important;
  z-index: 20;
}

.leaflet-container a.leaflet-popup-close-button:hover {
  color: #38bdf8 !important;
}

/* Map Bus Stop Popups */
.map-popup-card.stop-popup {
  width: 280px;
  max-width: calc(100vw - 32px);
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-sizing: border-box;
}

.stop-popup-header {
  border-bottom: 1px solid #1e293b;
  padding-bottom: 6px;
  padding-right: 22px;
}

.stop-popup-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: #f8fafc;
  margin: 0 0 5px 0;
  letter-spacing: -0.01em;
}

.stop-popup-routes {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.stop-popup-route-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1px 6px;
  border-radius: 8px;
  font-size: 0.7rem;
  font-weight: 700;
  color: #ffffff;
}

.stop-popup-buses {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: min(180px, 35vh);
  overflow-y: auto;
  overflow-x: hidden;
  padding-right: 3px;
  scrollbar-width: thin;
  scrollbar-color: #334155 transparent;
}

.stop-popup-buses::-webkit-scrollbar {
  width: 5px;
}

.stop-popup-buses::-webkit-scrollbar-track {
  background: transparent;
}

.stop-popup-buses::-webkit-scrollbar-thumb {
  background: #334155;
  border-radius: 9999px;
}

.stop-popup-buses::-webkit-scrollbar-thumb:hover {
  background: #475569;
}

.stop-popup-bus-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px 10px;
  background: #131d33;
  border-radius: 8px;
  border: 1px solid #1e2d4a;
  transition: border-color 0.15s ease, background-color 0.15s ease;
  box-sizing: border-box;
}

.stop-popup-bus-row:hover {
  border-color: #38bdf8;
  background: #17233d;
}

.stop-popup-bus-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.stop-popup-bus-identity {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  flex-wrap: nowrap;
}

.route-badge-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 700;
  color: #ffffff;
  flex-shrink: 0;
}

.stop-popup-bus-plate {
  font-weight: 700;
  font-size: 0.82rem;
  color: #f1f5f9;
  letter-spacing: 0.02em;
}

.stop-popup-eta {
  font-size: 0.8rem;
  font-weight: 700;
  color: #38bdf8;
  flex-shrink: 0;
}

.stop-popup-eta.eta-now {
  color: #34d399;
}

.stop-popup-bus-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding-top: 5px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.stop-popup-bus-metrics {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  flex-wrap: wrap;
}

.stop-popup-pbar {
  width: 42px;
  height: 5px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 3px;
  overflow: hidden;
  flex-shrink: 0;
}

.stop-popup-pfill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.3s ease;
}

.stop-popup-pax {
  font-size: 0.72rem;
  color: #94a3b8;
  white-space: nowrap;
}

.stop-popup-inspect-btn {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px;
  background: #1e293b;
  color: #38bdf8;
  border: 1px solid #334155;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: all 0.15s ease;
}

.stop-popup-inspect-btn:hover {
  background: #38bdf8;
  color: #0f172a;
  border-color: #38bdf8;
}

.stop-popup-empty {
  font-size: 0.8rem;
  color: #94a3b8;
  padding: 10px 4px;
  text-align: center;
}

/* Timeline vehicle dropdown filter */
.timeline-vehicle-group {
  margin-left: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ==========================================================================
   1-Minute Live Headway & Bus Bunching Strip
   ========================================================================== */
.map-headway-strip {
  display: flex;
  align-items: center;
  gap: 12px;
  overflow-x: auto;
  padding: 8px 12px;
  margin-top: 8px;
  background: rgba(15, 23, 42, 0.75);
  border: 1px solid #1e293b;
  border-radius: 8px;
  -webkit-overflow-scrolling: touch;
}

.headway-route-group {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: #1e293b;
  border-radius: 6px;
  white-space: nowrap;
  font-size: 0.8rem;
}

.headway-route-tag {
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
  color: #ffffff;
  font-size: 0.75rem;
}

.headway-bus-badge {
  background: #334155;
  color: #f1f5f9;
  padding: 2px 6px;
  border-radius: 4px;
  font-family: monospace;
  font-size: 0.72rem;
  font-weight: 600;
}

.headway-bus-badge.is-bunched {
  background: #7f1d1d;
  color: #fca5a5;
  border: 1px solid #ef4444;
}

.headway-gap {
  color: #94a3b8;
  font-size: 0.72rem;
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 1px 4px;
}

.headway-gap.is-bunched {
  color: #f87171;
  font-weight: 700;
  background: rgba(239, 68, 68, 0.15);
  border-radius: 4px;
}

/* Bunching & Duty Profile Badges */
.badge-bunched {
  background: #dc2626;
  color: #ffffff;
  font-weight: 700;
  animation: pulse-bunched 2s infinite ease-in-out;
}

@keyframes pulse-bunched {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.75; }
}

.badge-duty-full-day {
  background: #0284c7;
  color: #ffffff;
}

.badge-duty-booster {
  background: #d97706;
  color: #ffffff;
}

.badge-duty-standby {
  background: #475569;
  color: #cbd5e1;
}

/* ==========================================================================
   Observed Travel Patterns: 1-Minute Transit Insights Grid
   ========================================================================== */
.transit-insights-grid {
  margin-top: 20px;
}

.leaderboard-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 10px;
}

.leaderboard-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: linear-gradient(180deg, #182238 0%, #131b2e 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  gap: 12px;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.leaderboard-item:hover {
  background: linear-gradient(180deg, #1d2b45 0%, #162035 100%);
  border-color: rgba(56, 189, 248, 0.3);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.leaderboard-rank {
  font-size: 1.15rem;
  font-weight: 800;
  color: #64748b;
  width: 24px;
  text-align: center;
  flex-shrink: 0;
  font-family: 'JetBrains Mono', monospace;
}

.leaderboard-rank.top-1 { color: #f59e0b; text-shadow: 0 0 10px rgba(245, 158, 11, 0.3); }
.leaderboard-rank.top-2 { color: #94a3b8; }
.leaderboard-rank.top-3 { color: #d97706; }

.leaderboard-info {
  flex: 1;
  min-width: 0;
}

.leaderboard-stop-name {
  font-weight: 600;
  color: #f1f5f9;
  font-size: 0.88rem;
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.leaderboard-meta {
  font-size: 0.75rem;
  color: #94a3b8;
}

.leaderboard-metrics {
  text-align: right;
  flex-shrink: 0;
}

.leaderboard-dwell-val {
  font-size: 0.95rem;
  font-weight: 700;
  color: #38bdf8;
  font-family: 'JetBrains Mono', monospace;
}

.leaderboard-dwell-label {
  font-size: 0.7rem;
  color: #64748b;
}

/* Corridor Segments List */
.segments-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 10px;
}

.segment-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 13px;
  background: linear-gradient(180deg, #182238 0%, #131b2e 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  gap: 10px;
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.segment-item:hover {
  background: linear-gradient(180deg, #1d2b45 0%, #162035 100%);
  border-color: rgba(56, 189, 248, 0.3);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.segment-route-badge {
  font-weight: 700;
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: 6px;
  color: #ffffff;
  flex-shrink: 0;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
}

.segment-corridor {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
}

.segment-corridor-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: #e2e8f0;
  display: flex;
  align-items: center;
  gap: 5px;
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
}

.corridor-from,
.corridor-to {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
  flex-shrink: 1;
}

.segment-arrow {
  color: #64748b;
  font-weight: normal;
  flex-shrink: 0;
}

.segment-meta {
  font-size: 0.72rem;
  color: #94a3b8;
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.segment-timing {
  text-align: right;
  flex-shrink: 0;
  margin-left: auto;
}

.segment-timing .badge {
  white-space: nowrap;
  font-size: 11px;
  padding: 3px 8px;
}

/* Lecture Transition Surge Container - Modern Aesthetic */
.surge-windows-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.surge-window-card {
  background: linear-gradient(180deg, #182238 0%, #131b2e 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

.surge-window-card:hover {
  border-color: rgba(56, 189, 248, 0.35);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
  transform: translateY(-1px);
}

.surge-window-card.is-active-window {
  border-color: rgba(245, 158, 11, 0.6);
  background: linear-gradient(165deg, rgba(245, 158, 11, 0.09) 0%, #172136 60%, #131b2e 100%);
  box-shadow: 0 0 20px rgba(245, 158, 11, 0.14), inset 0 1px 0 rgba(245, 158, 11, 0.3);
}

.surge-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  min-height: 24px;
}

.surge-time {
  font-weight: 700;
  font-size: 0.92rem;
  color: #f8fafc;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.surge-magnitude {
  display: inline-flex;
  align-items: center;
  font-size: 0.78rem;
  font-weight: 700;
  color: #fbbf24;
  background: rgba(245, 158, 11, 0.14);
  border: 1px solid rgba(245, 158, 11, 0.3);
  padding: 2px 8px;
  border-radius: 9999px;
  white-space: nowrap;
}

.surge-magnitude.is-active-magnitude {
  color: #f59e0b;
  background: rgba(245, 158, 11, 0.22);
  border-color: rgba(245, 158, 11, 0.55);
}

.surge-metric-strip {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 1px;
  margin-bottom: 2px;
}

.surge-live-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  color: #fef08a;
  background: rgba(239, 68, 68, 0.2);
  border: 1px solid rgba(239, 68, 68, 0.45);
  padding: 3px 8px;
  border-radius: 9999px;
  letter-spacing: 0.01em;
}

.pulse-dot-red {
  width: 7px;
  height: 7px;
  background-color: #ef4444;
  border-radius: 50%;
  box-shadow: 0 0 6px #ef4444;
  animation: pulse-red 1.6s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  flex-shrink: 0;
}

@keyframes pulse-red {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.85); }
}

.surge-pill-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.7rem;
  font-weight: 600;
  border-radius: 6px;
  padding: 3px 8px;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.pill-empirical {
  background: rgba(56, 189, 248, 0.12);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.25);
}

.pill-baseline {
  background: rgba(148, 163, 184, 0.1);
  color: #94a3b8;
  border: 1px solid rgba(148, 163, 184, 0.2);
}

.surge-desc {
  font-size: 0.78rem;
  color: #cbd5e1;
  line-height: 1.45;
}

.surge-tip {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.74rem;
  color: #7dd3fc;
  background: rgba(56, 189, 248, 0.08);
  border-left: 3px solid #38bdf8;
  border-radius: 0 6px 6px 0;
  padding: 7px 10px;
  line-height: 1.4;
  margin-top: 2px;
}

.surge-tip-icon {
  font-size: 13px;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 1px;
}

.surge-tip-text {
  flex: 1;
  min-width: 0;
}

.surge-tip-text strong {
  color: #e0f2fe;
}

/* ==========================================================================
   Light Theme Overrides
   ========================================================================== */
[data-theme="light"] body {
  background-color: var(--bg-primary);
  color: var(--text-main);
}

[data-theme="light"] * {
  scrollbar-color: #cbd5e1 transparent;
}

[data-theme="light"] .app-header {
  background: #ffffff;
  border-bottom-color: var(--border-color);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .poller-pill {
  background: #f1f5f9;
  border-color: #cbd5e1;
  color: #334155;
}

[data-theme="light"] .poller-pill.is-live {
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.3);
  color: #047857;
}

[data-theme="light"] .tab-btn {
  color: #64748b;
}

[data-theme="light"] .tab-btn:hover {
  color: var(--nus-blue);
  background-color: #f1f5f9;
}

[data-theme="light"] .tab-btn.active {
  color: var(--nus-blue);
  border-bottom-color: var(--nus-blue);
}

[data-theme="light"] .panel {
  background: var(--bg-card);
  border-color: var(--border-color);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .metric-card {
  background: var(--bg-card);
  border-color: var(--border-color);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .metric-card:hover {
  border-color: var(--nus-blue);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .metric-value {
  color: #0f172a;
}

[data-theme="light"] .form-input,
[data-theme="light"] .form-select,
[data-theme="light"] .date-input {
  background-color: #ffffff;
  border-color: #cbd5e1;
  color: #0f172a;
}

[data-theme="light"] .form-input:focus,
[data-theme="light"] .form-select:focus,
[data-theme="light"] .date-input:focus {
  border-color: var(--nus-blue);
  box-shadow: 0 0 0 2px rgba(0, 61, 124, 0.15);
}

[data-theme="light"] .btn-secondary {
  background-color: #f1f5f9;
  border-color: #cbd5e1;
  color: #334155;
}

[data-theme="light"] .btn-secondary:hover:not(:disabled) {
  background-color: #e2e8f0;
  border-color: #94a3b8;
  color: #0f172a;
}

[data-theme="light"] .toggle-group {
  background-color: #e2e8f0;
}

[data-theme="light"] .toggle-btn {
  color: #475569;
}

[data-theme="light"] .toggle-btn:hover {
  color: #0f172a;
}

[data-theme="light"] .toggle-btn.active {
  background-color: #ffffff;
  color: #0f172a;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .filter-pills .btn-secondary {
  background-color: #f1f5f9;
  border-color: #cbd5e1;
  color: #475569;
}

[data-theme="light"] .filter-pills .btn-secondary:hover {
  background-color: #e2e8f0;
  color: #0f172a;
}

[data-theme="light"] .filter-pills .btn-secondary.active {
  background-color: var(--nus-blue);
  border-color: var(--nus-blue);
  color: #ffffff;
}

[data-theme="light"] .connection-banner.is-info {
  background: #eff6ff;
  border-color: #bfdbfe;
  color: #1e40af;
}

[data-theme="light"] .connection-banner.is-warning {
  background: #fffbeb;
  border-color: #fde68a;
  color: #92400e;
}

[data-theme="light"] .connection-banner.is-danger {
  background: #fef2f2;
  border-color: #fecaca;
  color: #991b1b;
}

[data-theme="light"] .banner-close {
  color: inherit;
}

[data-theme="light"] .chart-canvas-container {
  background-color: #ffffff;
  border-color: var(--border-color);
}

[data-theme="light"] .chart-tooltip {
  background: rgba(255, 255, 255, 0.96);
  border-color: #cbd5e1;
  color: #0f172a;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .map-container {
  border-color: var(--border-color);
}

[data-theme="light"] .map-tiles-dark {
  filter: none !important;
}

[data-theme="light"] .leaflet-popup-content-wrapper,
[data-theme="light"] .leaflet-popup-tip {
  background: #ffffff;
  color: #0f172a;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .stop-popup {
  color: #0f172a;
}

[data-theme="light"] .bus-card {
  background: #ffffff;
  border-color: var(--border-color);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .bus-card:hover {
  border-color: var(--nus-blue);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .bus-card.is-stale {
  background: #f8fafc;
  opacity: 0.85;
}

[data-theme="light"] .vehicle-modal-backdrop {
  background-color: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(4px);
}

[data-theme="light"] .vehicle-modal-container {
  background: #ffffff;
  border-color: var(--border-color);
  color: #0f172a;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .vehicle-stat-card {
  background: #f8fafc;
  border-color: #e2e8f0;
}

[data-theme="light"] .vehicle-stat-card .val {
  color: #0f172a;
}

[data-theme="light"] .diagnostics-table td {
  border-bottom-color: #e2e8f0;
}

[data-theme="light"] .leaderboard-item {
  background: #f8fafc;
  border-color: #e2e8f0;
}

[data-theme="light"] .leaderboard-item:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
}

[data-theme="light"] .surge-window-card {
  background: #ffffff;
  border-color: #e2e8f0;
}

[data-theme="light"] .surge-window-card.is-active {
  background: #f0fdf4;
  border-color: #86efac;
}

[data-theme="light"] .surge-tip-banner {
  background: #f0f9ff;
  border-left-color: #0284c7;
  color: #0369a1;
}

[data-theme="light"] .surge-tip-text strong {
  color: #0c4a6e;
}






/* ==========================================================================
   Light Theme Overrides (Solid NUS Color Palette - No Gradients)
   ========================================================================== */
[data-theme="light"] body {
  background-color: var(--bg-primary);
  color: var(--text-main);
}

[data-theme="light"] * {
  scrollbar-color: #cbd5e1 transparent;
}

/* Header & Brand Identity */
[data-theme="light"] .app-header {
  background: #ffffff;
  border-bottom: 3px solid var(--nus-blue);
  box-shadow: 0 2px 8px rgba(0, 61, 124, 0.08);
}

[data-theme="light"] .brand-logo .logo-nus {
  background: var(--nus-blue);
  color: #ffffff;
}

[data-theme="light"] .brand-logo .logo-shuttle {
  background: var(--nus-orange);
  color: #ffffff;
}

[data-theme="light"] .brand-text h1 {
  color: var(--nus-blue);
  font-weight: 700;
}

[data-theme="light"] .subtitle {
  color: var(--text-muted);
}

[data-theme="light"] .poller-pill {
  background: #f1f5f9;
  border-color: #cbd5e1;
  color: #334155;
}

[data-theme="light"] .poller-pill.is-live {
  background: #ecfdf5;
  border-color: #a7f3d0;
  color: #065f46;
}

[data-theme="light"] .theme-toggle-btn {
  background: #ffffff;
  border-color: #cbd5e1;
  color: var(--nus-blue);
}

[data-theme="light"] .theme-toggle-btn:hover {
  background: #e8eff7;
  border-color: var(--nus-blue);
  color: var(--nus-blue);
}

[data-theme="light"] .btn-primary {
  background: var(--nus-orange);
  border-color: var(--nus-orange);
  color: #ffffff;
  box-shadow: 0 2px 4px rgba(239, 124, 0, 0.25);
  font-weight: 600;
}

[data-theme="light"] .btn-primary:hover:not(:disabled) {
  background: #d36e00;
  border-color: #d36e00;
  color: #ffffff;
}

/* Source Attribution & Banner */
[data-theme="light"] .source-attribution {
  color: var(--text-muted);
}

[data-theme="light"] .source-attribution a {
  color: var(--nus-blue);
  font-weight: 600;
}

[data-theme="light"] .connection-banner {
  background: #e8eff7;
  border-color: #b6d2ec;
  color: var(--nus-blue);
}

[data-theme="light"] .connection-banner.is-success {
  background: #f0fdf4;
  border-color: #86efac;
  color: #166534;
}

[data-theme="light"] .connection-banner.is-warning {
  background: #fff4e6;
  border-color: #fed7aa;
  color: #c2410c;
}

[data-theme="light"] .connection-banner.is-error {
  background: #fef2f2;
  border-color: #fca5a5;
  color: #991b1b;
}

[data-theme="light"] .banner-close {
  color: inherit;
}

/* ==========================================================================
   Top Summary Metric Cards (Solid NUS Palette - Uniform & Balanced)
   ========================================================================== */
[data-theme="light"] .metric-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
  border-radius: 10px;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

[data-theme="light"] .metric-card:hover {
  border-color: var(--nus-blue);
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}

[data-theme="light"] .metric-card .metric-header {
  margin-bottom: 10px;
}

[data-theme="light"] .metric-card .metric-icon {
  font-size: 16px;
  line-height: 1;
  padding: 6px 8px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Cards 1 & 2: Real-time Telemetry (NUS Blue Theme) */
[data-theme="light"] .summary-cards-grid .metric-card:nth-child(1),
[data-theme="light"] .summary-cards-grid .metric-card:nth-child(2) {
  border-top: 4px solid var(--nus-blue);
}

[data-theme="light"] .summary-cards-grid .metric-card:nth-child(1) .metric-title,
[data-theme="light"] .summary-cards-grid .metric-card:nth-child(2) .metric-title {
  color: var(--nus-blue);
  font-weight: 700;
}

[data-theme="light"] .summary-cards-grid .metric-card:nth-child(1) .metric-icon,
[data-theme="light"] .summary-cards-grid .metric-card:nth-child(2) .metric-icon {
  background: #e8eff7;
  color: var(--nus-blue);
}

[data-theme="light"] .summary-cards-grid .metric-card:nth-child(1) .metric-value,
[data-theme="light"] .summary-cards-grid .metric-card:nth-child(2) .metric-value {
  color: #001a33;
}

/* Cards 3 & 4: Analytical Insights (NUS Orange Theme) */
[data-theme="light"] .summary-cards-grid .metric-card:nth-child(3),
[data-theme="light"] .summary-cards-grid .metric-card:nth-child(4) {
  border-top: 4px solid var(--nus-orange);
}

[data-theme="light"] .summary-cards-grid .metric-card:nth-child(3) .metric-title,
[data-theme="light"] .summary-cards-grid .metric-card:nth-child(4) .metric-title {
  color: var(--nus-orange);
  font-weight: 700;
}

[data-theme="light"] .summary-cards-grid .metric-card:nth-child(3) .metric-icon,
[data-theme="light"] .summary-cards-grid .metric-card:nth-child(4) .metric-icon {
  background: #fff4e6;
  color: var(--nus-orange);
}

[data-theme="light"] .summary-cards-grid .metric-card:nth-child(3) .metric-value,
[data-theme="light"] .summary-cards-grid .metric-card:nth-child(4) .metric-value {
  color: #001a33;
}

[data-theme="light"] .metric-subtext {
  color: var(--text-muted);
}

/* ==========================================================================
   Navigation Tabs (Solid NUS Segmented Navigation)
   ========================================================================== */
[data-theme="light"] .tab-nav {
  background: transparent;
  border-bottom: 2px solid #e2e8f0;
  padding: 0 4px;
  gap: 8px;
  box-shadow: none;
}

[data-theme="light"] .tab-btn {
  color: #64748b;
  font-weight: 600;
  font-size: 14px;
  border-radius: 6px 6px 0 0;
  padding: 12px 18px;
  border: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  background: transparent;
  transition: all 0.15s ease-in-out;
}

[data-theme="light"] .tab-btn:hover {
  color: var(--nus-blue);
  background-color: #f1f5f9;
}

[data-theme="light"] .tab-btn.active {
  color: var(--nus-blue) !important;
  border-bottom: 3px solid var(--nus-orange);
  background: transparent;
  font-weight: 700;
}

/* Panels */
[data-theme="light"] .panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
  border-radius: 10px;
}

[data-theme="light"] .panel-title {
  color: var(--nus-blue);
  font-weight: 700;
}

[data-theme="light"] .panel-subtitle {
  color: var(--text-muted);
}

/* Controls, Inputs & Toggles */
[data-theme="light"] .form-input,
[data-theme="light"] .form-select,
[data-theme="light"] .date-input {
  background-color: #ffffff;
  border-color: #cbd5e1;
  color: #001a33;
}

[data-theme="light"] .form-input:focus,
[data-theme="light"] .form-select:focus,
[data-theme="light"] .date-input:focus {
  border-color: var(--nus-blue);
  box-shadow: 0 0 0 2px rgba(0, 61, 124, 0.2);
}

[data-theme="light"] .btn-secondary {
  background-color: #ffffff;
  border-color: #cbd5e1;
  color: var(--nus-blue);
  font-weight: 600;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .btn-secondary:hover:not(:disabled) {
  background-color: #e8eff7;
  border-color: var(--nus-blue);
  color: var(--nus-blue);
}

[data-theme="light"] .btn-secondary.active {
  background-color: var(--nus-blue);
  border-color: var(--nus-blue);
  color: #ffffff;
}

[data-theme="light"] .toggle-group {
  background-color: #e2e8f0;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  padding: 2px;
}

[data-theme="light"] .toggle-btn {
  color: #475569;
  border-radius: 4px;
  font-weight: 600;
}

[data-theme="light"] .toggle-btn:hover {
  color: var(--nus-blue);
}

[data-theme="light"] .toggle-btn.active {
  background-color: var(--nus-blue);
  color: #ffffff;
  box-shadow: 0 1px 3px rgba(0, 61, 124, 0.2);
  font-weight: 700;
}

[data-theme="light"] .filter-pills .btn-secondary,
[data-theme="light"] .route-pill {
  background-color: #ffffff;
  border: 1px solid #cbd5e1;
  color: #475569;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
}

[data-theme="light"] .filter-pills .btn-secondary:hover,
[data-theme="light"] .route-pill:hover {
  background-color: #f1f5f9;
  border-color: #94a3b8;
  color: #0f172a;
}

[data-theme="light"] .filter-pills .btn-secondary.active {
  background-color: var(--nus-blue);
  border-color: var(--nus-blue);
  color: #ffffff;
  font-weight: 700;
}

[data-theme="light"] .route-pill.active {
  background: color-mix(in srgb, var(--c, var(--nus-blue)) 14%, #ffffff);
  border-color: var(--c, var(--nus-blue));
  color: #001a33;
  font-weight: 700;
  box-shadow: 0 1px 4px color-mix(in srgb, var(--c, var(--nus-blue)) 20%, transparent);
}

[data-theme="light"] .route-pill.active .route-pill-dot {
  opacity: 1;
  box-shadow: 0 0 4px var(--c, var(--nus-blue));
}

/* Charts & Toolbars */
[data-theme="light"] .chart-wrapper,
[data-theme="light"] .vehicle-chart-wrapper,
[data-theme="light"] .vehicle-hourly-chart-wrapper {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

[data-theme="light"] .chart-nav-btn,
[data-theme="light"] .chart-zoom-btn {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  color: var(--nus-blue);
  border-radius: 6px;
  font-weight: 700;
}

[data-theme="light"] .chart-nav-btn:hover,
[data-theme="light"] .chart-zoom-btn:hover {
  background: var(--nus-blue);
  border-color: var(--nus-blue);
  color: #ffffff;
}

[data-theme="light"] .timeline-window-badge {
  background: #e8eff7;
  border: 1px solid #b6d2ec;
  color: var(--nus-blue);
  font-weight: 700;
  border-radius: 6px;
}

[data-theme="light"] .chart-tooltip {
  background: #ffffff;
  border: 1px solid var(--nus-blue);
  color: #001a33;
  box-shadow: 0 4px 16px rgba(0, 61, 124, 0.15);
}

/* Route Comparison Cards (Observed Travel Patterns) */
[data-theme="light"] .comparison-box {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-top: 3px solid var(--nus-blue);
  box-shadow: var(--card-shadow);
  border-radius: 8px;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}

[data-theme="light"] .comparison-box:hover {
  border-color: var(--nus-blue);
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}

[data-theme="light"] .comparison-header {
  border-bottom: 1px solid var(--border-subtle);
}

[data-theme="light"] .comparison-metric-main {
  color: #001a33;
}

[data-theme="light"] .comparison-pct {
  color: var(--nus-orange);
  font-weight: 700;
}

[data-theme="light"] .comparison-pct-label {
  color: var(--text-muted);
}

[data-theme="light"] .comparison-meta-group .window-meta {
  color: var(--text-muted);
}

/* Dwell Leaderboard (NUS Ranked Palette) */
[data-theme="light"] .leaderboard-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
  border-radius: 8px;
  transition: transform 0.15s, box-shadow 0.15s;
}

[data-theme="light"] .leaderboard-item:hover {
  background: #f8fafc;
  border-color: var(--nus-blue);
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-1px);
}

[data-theme="light"] .leaderboard-item:nth-child(1) {
  background: #fff4e6;
  border-color: #ffd8a8;
  border-left: 4px solid var(--nus-orange);
}

[data-theme="light"] .leaderboard-item:nth-child(1) .leaderboard-rank {
  background: var(--nus-orange);
  color: #ffffff;
  font-weight: 700;
}

[data-theme="light"] .leaderboard-item:nth-child(2) {
  background: #e8eff7;
  border-color: #b6d2ec;
  border-left: 4px solid var(--nus-blue);
}

[data-theme="light"] .leaderboard-item:nth-child(2) .leaderboard-rank {
  background: var(--nus-blue);
  color: #ffffff;
  font-weight: 700;
}

[data-theme="light"] .leaderboard-stop-name {
  color: #001a33 !important;
  font-weight: 600;
}

[data-theme="light"] .leaderboard-meta {
  color: var(--text-muted);
}

[data-theme="light"] .leaderboard-dwell-val {
  color: var(--nus-blue);
  font-weight: 700;
}

[data-theme="light"] .leaderboard-dwell-label {
  color: var(--text-muted);
}

/* Corridor Travel Times */
[data-theme="light"] .segment-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--nus-blue);
  box-shadow: var(--card-shadow);
  border-radius: 8px;
  transition: all 0.15s;
}

[data-theme="light"] .segment-item:hover {
  background: #e8eff7;
  border-color: var(--nus-blue);
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-1px);
}

[data-theme="light"] .segment-corridor-name,
[data-theme="light"] .corridor-from,
[data-theme="light"] .corridor-to {
  color: #001a33 !important;
  font-weight: 600;
}

[data-theme="light"] .segment-meta {
  color: var(--text-muted);
}

/* Fleet Summary Strip */
[data-theme="light"] .fleet-summary-strip {
  background: #e8eff7;
  border: 1px solid #b6d2ec;
  color: #001a33;
  box-shadow: var(--card-shadow);
  border-radius: 8px;
}

[data-theme="light"] .fleet-summary-strip strong {
  color: var(--nus-blue);
  font-weight: 800;
}

/* Window Items */
[data-theme="light"] .window-item {
  background: #ffffff;
  border-color: var(--border-color);
  box-shadow: var(--card-shadow);
  border-radius: 8px;
}

[data-theme="light"] .window-time {
  color: var(--nus-blue);
  font-weight: 600;
}

[data-theme="light"] .window-meta {
  color: var(--text-muted);
}

/* Surge Window Cards */
[data-theme="light"] .surge-window-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--nus-blue);
  box-shadow: var(--card-shadow);
  border-radius: 8px;
}

[data-theme="light"] .surge-window-card:hover {
  border-color: var(--nus-blue);
  box-shadow: var(--card-shadow-hover);
}

[data-theme="light"] .surge-window-card.is-active-window {
  border-color: var(--nus-orange);
  border-left: 4px solid var(--nus-orange);
  background: #fff4e6;
  box-shadow: 0 4px 12px rgba(239, 124, 0, 0.2);
}

[data-theme="light"] .surge-time {
  color: #001a33;
  font-weight: 700;
}

[data-theme="light"] .surge-desc {
  color: var(--text-muted);
}

[data-theme="light"] .surge-tip {
  background: #e8eff7;
  border-left: 4px solid var(--nus-blue);
  color: var(--nus-blue);
  border-radius: 6px;
}

[data-theme="light"] .surge-tip-text strong {
  color: #001a33;
}

/* Fleet Bus Cards - Distinct Light Theme States */
[data-theme="light"] .bus-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  border-radius: 8px;
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.2s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.2s ease,
              opacity 0.2s ease;
}

/* 1. Active Buses (Reported in latest pull) - Crisp, Vibrant & Elevated */
[data-theme="light"] .bus-card-active {
  background: #ffffff !important;
  border: 1.5px solid #86efac !important;
  border-top: 4px solid #10b981 !important;
  box-shadow: 0 4px 16px -2px rgba(16, 185, 129, 0.16),
              0 2px 6px -1px rgba(0, 0, 0, 0.04) !important;
  opacity: 1 !important;
}

[data-theme="light"] .bus-card-active:hover {
  border-color: #10b981 !important;
  border-top-color: #059669 !important;
  box-shadow: 0 12px 28px -4px rgba(16, 185, 129, 0.25),
              0 6px 10px -2px rgba(0, 0, 0, 0.05) !important;
  transform: translateY(-3px);
}

[data-theme="light"] .bus-card-active .bus-plate {
  color: #0f172a;
  font-weight: 700;
}

[data-theme="light"] .bus-card-active .bus-route-badge {
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .bus-card-active .bus-card-click-hint {
  color: #047857;
  font-weight: 600;
}

/* 2. Inactive Buses (Not in latest pull) - Soft, Muted & Receding */
[data-theme="light"] .bus-card-inactive {
  background: #f1f5f9 !important;
  border: 1.5px dashed #cbd5e1 !important;
  border-top: 1.5px dashed #cbd5e1 !important;
  box-shadow: none !important;
  opacity: 0.72 !important;
}

[data-theme="light"] .bus-card-inactive:hover {
  opacity: 0.96 !important;
  border-color: #94a3b8 !important;
  border-top-color: #94a3b8 !important;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.06) !important;
  transform: translateY(-1px);
}

[data-theme="light"] .bus-card-inactive .bus-route-badge {
  filter: saturate(0.8);
  opacity: 0.85;
}

[data-theme="light"] .bus-card-inactive .bus-plate {
  color: #64748b;
  font-weight: 500;
}

[data-theme="light"] .bus-card-inactive .progress-bar-fill {
  opacity: 0.45;
}

[data-theme="light"] .bus-card-inactive .bus-pax {
  color: #64748b;
}

[data-theme="light"] .bus-card-inactive .bus-meta-row {
  color: #64748b;
}

[data-theme="light"] .bus-card-inactive .bus-inactive-reason {
  background: #e2e8f0;
  border-left: 3px solid #94a3b8;
}

[data-theme="light"] .bus-card-inactive .inactive-reason-title {
  color: #334155;
}

[data-theme="light"] .bus-card-inactive .inactive-reason-desc {
  color: #64748b;
}

[data-theme="light"] .bus-card-inactive .bus-card-click-hint {
  color: #64748b;
  font-weight: 500;
}

[data-theme="light"] .bus-card-inactive .badge-duty-booster {
  background: #fed7aa;
  color: #9a3412;
  border: 1px solid #fdba74;
}

[data-theme="light"] .bus-card-inactive .badge-duty-standby {
  background: #e2e8f0;
  color: #64748b;
  border: 1px solid #cbd5e1;
}

[data-theme="light"] .bus-card-inactive .badge-duty-full-day {
  background: #bae6fd;
  color: #0369a1;
  border: 1px solid #7dd3fc;
}

/* 3. Stale Buses (Last known reading) - Subtle Amber Warning */
[data-theme="light"] .bus-card-stale {
  background: #fffbeb !important;
  border: 1.5px dashed #fcd34d !important;
  border-top: 1.5px dashed #fcd34d !important;
  box-shadow: none !important;
  opacity: 0.8 !important;
}

[data-theme="light"] .bus-card-stale:hover {
  opacity: 1 !important;
  border-color: #f59e0b !important;
  border-top-color: #f59e0b !important;
  box-shadow: 0 6px 16px rgba(245, 158, 11, 0.12) !important;
  transform: translateY(-1px);
}

/* Status Badges in Light Theme */
[data-theme="light"] .badge-secondary {
  background: #e2e8f0;
  color: #475569;
  border: 1px solid #cbd5e1;
}

[data-theme="light"] .badge-info {
  background: #e0f2fe;
  color: #0369a1;
  border: 1px solid #bae6fd;
}

[data-theme="light"] .badge-active {
  background: #ecfdf5;
  color: #047857;
  border: 1.5px solid #6ee7b7;
  font-weight: 700;
  box-shadow: 0 1px 2px rgba(16, 185, 129, 0.1);
}

[data-theme="light"] .badge-inactive {
  background: #e2e8f0;
  color: #475569;
  border: 1px solid #cbd5e1;
  font-weight: 500;
}

[data-theme="light"] .badge-stale {
  background: #fef3c7;
  color: #92400e;
  border: 1px solid #fde68a;
  font-weight: 600;
}

/* Map Route Filter Pills */
[data-theme="light"] .map-pill {
  background-color: #ffffff;
  color: #334155;
  border: 1px solid #cbd5e1;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .map-pill:hover {
  background-color: #f8fafc;
  border-color: #94a3b8;
  color: #0f172a;
}

[data-theme="light"] .map-pill.active {
  background-color: var(--c, var(--nus-blue));
  border-color: var(--c, var(--nus-blue));
  color: #ffffff;
  box-shadow: 0 2px 6px color-mix(in srgb, var(--c, var(--nus-blue)) 35%, transparent);
}

[data-theme="light"] .map-pill[data-map-route="A2"].active {
  color: #001a33;
  font-weight: 800;
}

[data-theme="light"] .map-pill[data-map-route="all"].active {
  background-color: var(--nus-blue);
  border-color: var(--nus-blue);
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(0, 61, 124, 0.25);
}

/* 1-Minute Live Headway & Bus Bunching Strip */
[data-theme="light"] .map-headway-strip {
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.03);
}

[data-theme="light"] .headway-route-group {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .headway-route-tag {
  color: #ffffff;
  font-weight: 700;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .headway-bus-badge {
  background: #e8eff7;
  color: var(--nus-blue);
  border: 1px solid #b6d2ec;
  font-weight: 700;
}

[data-theme="light"] .headway-bus-badge.is-bunched {
  background: #fef2f2;
  color: #b91c1c;
  border: 1.5px solid #f87171;
}

[data-theme="light"] .headway-gap {
  color: #475569;
  font-weight: 600;
}

[data-theme="light"] .headway-gap.is-bunched {
  color: #b91c1c;
  background: #fee2e2;
  border: 1px solid #fca5a5;
  font-weight: 700;
  border-radius: 4px;
  padding: 1px 4px;
}

/* Map Viewport & Controls */
[data-theme="light"] .map-viewport-container {
  border-color: #cbd5e1;
  box-shadow: 0 4px 16px rgba(0, 61, 124, 0.08);
}

[data-theme="light"] .leaflet-bar {
  border: 1px solid #cbd5e1 !important;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1) !important;
}

[data-theme="light"] .leaflet-bar a {
  background-color: #ffffff !important;
  color: #334155 !important;
  border-bottom: 1px solid #e2e8f0 !important;
}

[data-theme="light"] .leaflet-bar a:hover {
  background-color: #f1f5f9 !important;
  color: var(--nus-blue) !important;
}

[data-theme="light"] .map-tiles-dark {
  filter: none !important;
}

[data-theme="light"] .leaflet-container {
  background: #e2e8f0 !important;
}

[data-theme="light"] .map-floating-legend {
  background: #ffffff;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 16px rgba(0, 61, 124, 0.1);
  border-radius: 8px;
}

[data-theme="light"] .legend-title {
  color: var(--nus-blue);
  font-weight: 700;
}

[data-theme="light"] .legend-row {
  color: #334155;
}

[data-theme="light"] .leaflet-popup-content-wrapper,
[data-theme="light"] .leaflet-popup-tip {
  background: #ffffff !important;
  color: #001a33 !important;
  border: 1px solid var(--nus-blue) !important;
  box-shadow: 0 4px 16px rgba(0, 61, 124, 0.15) !important;
}

[data-theme="light"] .stop-popup-header {
  border-bottom-color: var(--border-subtle) !important;
}

[data-theme="light"] .stop-popup-title,
[data-theme="light"] .map-popup-pax-val {
  color: #001a33 !important;
}

[data-theme="light"] .stop-popup-bus-row {
  background: #f8fafc;
  border-color: #e2e8f0;
}

[data-theme="light"] .stop-popup-bus-row:hover {
  background: #e8eff7;
  border-color: var(--nus-blue);
}

[data-theme="light"] .stop-popup-bus-plate {
  color: #001a33;
}

[data-theme="light"] .stop-popup-bus-bottom {
  border-top-color: #e2e8f0;
}

[data-theme="light"] .stop-popup-pbar {
  background: #e2e8f0;
}

[data-theme="light"] .stop-popup-pax {
  color: var(--text-muted);
}

/* Vehicle Combined Modal */
[data-theme="light"] .vehicle-modal-backdrop {
  background-color: rgba(0, 26, 51, 0.5);
  backdrop-filter: blur(4px);
}

[data-theme="light"] .vehicle-modal-container {
  background: #ffffff;
  border: 2px solid var(--nus-blue);
  color: #001a33;
  box-shadow: 0 20px 45px rgba(0, 61, 124, 0.25);
  border-radius: 10px;
}

[data-theme="light"] .vehicle-modal-header {
  background: #e8eff7;
  border-bottom: 2px solid #b6d2ec;
}

[data-theme="light"] .vehicle-modal-title {
  color: var(--nus-blue);
  font-weight: 700;
}

[data-theme="light"] .vehicle-modal-sub {
  color: var(--text-muted);
}

[data-theme="light"] .vehicle-modal-close {
  background: #ffffff;
  border-color: #cbd5e1;
  color: #334155;
}

[data-theme="light"] .vehicle-modal-close:hover {
  background: #ef4444;
  border-color: #ef4444;
  color: #ffffff;
}

[data-theme="light"] .vehicle-metrics-strip {
  background: #f8fafc;
  border-bottom-color: var(--border-color);
}

[data-theme="light"] .vehicle-metric-item {
  background: #ffffff;
  border-color: var(--border-color);
}

[data-theme="light"] .vehicle-metric-label {
  color: var(--text-muted);
}

[data-theme="light"] .vehicle-metric-val {
  color: #001a33;
  font-weight: 700;
}

[data-theme="light"] .vehicle-dashboard-col {
  background: #f8fafc;
  border-color: var(--border-color);
}

[data-theme="light"] .vehicle-col-title {
  color: var(--nus-blue);
  font-weight: 700;
}

[data-theme="light"] .vehicle-col-sub {
  color: var(--text-muted);
}

[data-theme="light"] .vehicle-col-header .btn-sm {
  background: #ffffff;
  border-color: var(--border-color);
  color: var(--nus-blue);
}

[data-theme="light"] .vehicle-col-header .btn-sm:hover {
  background: #e8eff7;
  border-color: var(--nus-blue);
  color: var(--nus-blue);
}

[data-theme="light"] .vehicle-chart-wrapper,
[data-theme="light"] .vehicle-hourly-chart-wrapper {
  background: #ffffff;
  border-color: var(--border-color);
}

[data-theme="light"] .vehicle-hourly-section,
[data-theme="light"] .vehicle-stops-section {
  background: #f8fafc;
  border-color: var(--border-color);
}

[data-theme="light"] .stop-progression-card {
  background: #ffffff;
  border-color: var(--border-color);
}

[data-theme="light"] .stop-progression-card:hover {
  border-color: var(--nus-blue);
  background: #e8eff7;
}

[data-theme="light"] .stop-progression-card.is-at-stop {
  border-color: #059669;
  background: #ecfdf5;
  box-shadow: 0 0 0 1px #059669, 0 3px 12px rgba(5, 150, 105, 0.25);
}

[data-theme="light"] .stop-progression-card.is-at-stop:hover {
  border-color: #047857;
  background: #d1fae5;
}

[data-theme="light"] .stop-progression-card.is-at-stop .stop-seq-badge {
  background: #059669;
  color: #ffffff;
}

[data-theme="light"] .stop-progression-card.is-approaching {
  border-color: #0284c7;
  background: #f0f9ff;
  box-shadow: 0 0 0 1px #0284c7, 0 3px 12px rgba(2, 132, 199, 0.25);
}

[data-theme="light"] .stop-progression-card.is-approaching:hover {
  border-color: #0369a1;
  background: #e0f2fe;
}

[data-theme="light"] .stop-progression-card.is-approaching .stop-seq-badge {
  background: #0284c7;
  color: #ffffff;
}

[data-theme="light"] .stop-card-status-badge.status-at-stop {
  background: #d1fae5;
  color: #065f46;
  border-color: #6ee7b7;
}

[data-theme="light"] .stop-card-status-badge.status-approaching {
  background: #e0f2fe;
  color: #0369a1;
  border-color: #7dd3fc;
}

[data-theme="light"] .stop-seq-badge {
  background: #e8eff7;
  color: var(--nus-blue);
  font-weight: 700;
}

[data-theme="light"] .stop-card-name {
  color: #001a33;
  font-weight: 600;
}

[data-theme="light"] .stop-card-set-btn {
  border-color: #cbd5e1;
  color: var(--nus-blue);
}

[data-theme="light"] .stop-card-set-btn:hover {
  background: #e8eff7;
  border-color: var(--nus-blue);
  color: var(--nus-blue);
}

[data-theme="light"] .vehicle-chart-stats,
[data-theme="light"] .vehicle-route-stats {
  border-top-color: var(--border-color);
  color: var(--text-muted);
}

[data-theme="light"] .vehicle-map-wrapper,
[data-theme="light"] .vehicle-leaflet-map {
  background: #e2e8f0;
  border-color: var(--border-color);
}

[data-theme="light"] .vehicle-inactive-banner {
  background: #f1f5f9;
}

/* Diagnostics Table */
[data-theme="light"] .diagnostics-table td {
  border-bottom-color: var(--border-subtle);
}

[data-theme="light"] .diagnostics-table td:first-child {
  color: var(--text-muted);
  font-weight: 500;
}

[data-theme="light"] .diagnostics-table td:last-child {
  color: #001a33;
  font-weight: 600;
}