:root {
      --bg-primary: #0a0e14;
      --bg-secondary: #111720;
      --bg-tertiary: #1a2332;
      --bg-elevated: #1e2938;
      --accent-blue: #00d4ff;
      --accent-green: #00ff9d;
      --accent-orange: #ff9500;
      --accent-red: #ff3b5c;
      --accent-purple: #a855f7;
      --text-primary: #e8edf5;
      --text-secondary: #8b9bb4;
      --text-muted: #5a6a80;
      --border-color: #2a3648;
      --glow-blue: 0 0 20px rgba(0, 212, 255, 0.3);
      --glow-green: 0 0 20px rgba(0, 255, 157, 0.3);
    }

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

    body {
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
      background: var(--bg-primary);
      color: var(--text-primary);
      overflow: hidden;
      height: 100vh;
    }

    /* Header */
    .header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: 56px;
      background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
      border-bottom: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 20px;
      z-index: 1000;
    }

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

    .logo-icon {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      overflow: hidden;
    }

    .logo-icon img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .logo-text {
      font-family: 'JetBrains Mono', monospace;
      font-weight: 700;
      font-size: 18px;
      letter-spacing: 0.5px;
      color: #a0b4c8;
    }

    .logo-text span {
      color: var(--accent-blue);
      font-weight: 800;
    }

    /* Search Bar */
    .search-container {
      flex: 1;
      max-width: 400px;
      margin: 0 40px;
      position: relative;
    }

    .search-input {
      width: 100%;
      height: 38px;
      background: var(--bg-tertiary);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 0 16px 0 40px;
      color: var(--text-primary);
      font-size: 14px;
      transition: all 0.2s;
    }

    .search-input:focus {
      outline: none;
      border-color: var(--accent-blue);
      box-shadow: var(--glow-blue);
    }

    .search-input::placeholder {
      color: var(--text-muted);
    }

    .search-icon {
      position: absolute;
      left: 12px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--text-muted);
      font-size: 16px;
    }

    .search-results {
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      background: var(--bg-elevated);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      margin-top: 4px;
      max-height: 300px;
      overflow-y: auto;
      display: none;
      z-index: 1001;
    }

    .search-results.active {
      display: block;
    }

    .search-result-item {
      padding: 12px 16px;
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 12px;
      border-bottom: 1px solid var(--border-color);
      transition: background 0.15s;
    }

    .search-result-item:last-child {
      border-bottom: none;
    }

    .search-result-item:hover {
      background: var(--bg-tertiary);
    }

    .search-result-icon {
      width: 32px;
      height: 32px;
      background: var(--bg-tertiary);
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
    }

    .search-result-info {
      flex: 1;
    }

    .search-result-name {
      font-weight: 500;
      font-size: 14px;
    }

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

    /* Header Controls */
    .header-controls {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .header-btn {
      height: 36px;
      padding: 0 14px;
      background: var(--bg-tertiary);
      border: 1px solid var(--border-color);
      border-radius: 6px;
      color: var(--text-secondary);
      font-size: 13px;
      font-weight: 500;
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 6px;
      transition: all 0.2s;
    }

    .header-btn:hover {
      background: var(--bg-elevated);
      color: var(--text-primary);
      border-color: var(--accent-blue);
    }

    .header-btn.active {
      background: var(--accent-blue);
      border-color: var(--accent-blue);
      color: var(--bg-primary);
    }

    /* Main Layout */
    .main-container {
      display: flex;
      height: calc(100vh - 56px);
      margin-top: 56px;
    }

    /* Sidebar */
    .sidebar {
      width: 320px;
      background: var(--bg-secondary);
      border-right: 1px solid var(--border-color);
      display: flex;
      flex-direction: column;
      z-index: 100;
      transition: width 0.25s ease, min-width 0.25s ease;
      min-width: 320px;
      position: relative;
    }

    .sidebar.collapsed {
      width: 0;
      min-width: 0;
      overflow: hidden;
      border-right: none;
    }

    .sidebar-collapse-btn {
      position: fixed;
      top: 50%;
      left: 320px;
      transform: translateY(-50%);
      width: 22px;
      height: 60px;
      background: var(--bg-elevated);
      border: 1px solid var(--border-color);
      border-left: none;
      border-radius: 0 8px 8px 0;
      color: var(--text-muted);
      font-size: 10px;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      z-index: 500;
      transition: all 0.25s ease;
      padding: 0;
      box-shadow: 2px 0 8px rgba(0,0,0,0.3);
    }

    .sidebar-collapse-btn:hover {
      background: var(--accent-blue);
      color: white;
      border-color: var(--accent-blue);
      width: 26px;
    }

    .sidebar-collapse-btn.collapsed {
      left: 0;
    }

    @media (max-width: 768px) {
      .sidebar {
        position: fixed;
        top: 56px;
        left: 0;
        bottom: 0;
        width: min(320px, calc(100vw - 44px));
        min-width: 0;
        max-width: calc(100vw - 44px);
        box-shadow: 8px 0 20px rgba(0, 0, 0, 0.35);
      }

      .sidebar-collapse-btn {
        left: min(320px, calc(100vw - 44px));
      }

      .sidebar.collapsed {
        width: 0;
        max-width: 0;
      }

      .map-container {
        width: 100%;
      }
    }

    .sidebar-tabs {
      display: flex;
      border-bottom: 1px solid var(--border-color);
    }

    .sidebar-tab {
      flex: 1;
      padding: 14px;
      text-align: center;
      font-size: 13px;
      font-weight: 500;
      color: var(--text-muted);
      cursor: pointer;
      border-bottom: 2px solid transparent;
      transition: all 0.2s;
    }

    .sidebar-tab:hover {
      color: var(--text-secondary);
    }

    .sidebar-tab.active {
      color: var(--accent-blue);
      border-bottom-color: var(--accent-blue);
    }

    .sidebar-content {
      flex: 1;
      overflow-y: auto;
      padding: 12px;
    }

    .sidebar-panel {
      display: none;
    }

    .sidebar-panel.active {
      display: block;
    }

    /* Vessel List */
    .vessel-list {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    /* Fleet Group in Sidebar */
    .fleet-sidebar-group {
      margin-bottom: 12px;
    }

    .fleet-sidebar-header {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 12px 14px;
      background: var(--bg-tertiary);
      border: 1px solid var(--border-color);
      border-radius: 10px;
      cursor: pointer;
      transition: all 0.2s;
    }

    .fleet-sidebar-header:hover {
      border-color: var(--accent-blue);
      background: var(--bg-elevated);
    }

    .fleet-sidebar-header.expanded {
      border-radius: 10px 10px 0 0;
      border-bottom-color: transparent;
    }

    .fleet-sidebar-color {
      width: 14px;
      height: 14px;
      border-radius: 4px;
      flex-shrink: 0;
    }

    .fleet-sidebar-name {
      font-weight: 600;
      font-size: 14px;
      flex: 1;
    }

    .fleet-sidebar-count {
      font-size: 12px;
      color: var(--text-muted);
      background: var(--bg-primary);
      padding: 2px 8px;
      border-radius: 10px;
    }

    .fleet-sidebar-arrow {
      color: var(--text-muted);
      font-size: 12px;
      transition: transform 0.2s;
    }

    .fleet-sidebar-header.expanded .fleet-sidebar-arrow {
      transform: rotate(180deg);
    }

    .fleet-sidebar-vessels {
      display: none;
      border: 1px solid var(--border-color);
      border-top: none;
      border-radius: 0 0 10px 10px;
      overflow: hidden;
    }

    .fleet-sidebar-vessels.expanded {
      display: block;
    }

    .fleet-sidebar-vessels .vessel-card {
      border-radius: 0;
      border-left: none;
      border-right: none;
      border-bottom: 1px solid var(--border-color);
    }

    .fleet-sidebar-vessels .vessel-card:last-child {
      border-bottom: none;
      border-radius: 0 0 10px 10px;
    }

    .fleet-sidebar-vessels .vessel-card:hover {
      transform: none;
      background: var(--bg-elevated);
    }

    .fleet-sidebar-empty {
      padding: 16px;
      text-align: center;
      color: var(--text-muted);
      font-size: 12px;
      font-style: italic;
    }

    .vessel-card {
      background: var(--bg-tertiary);
      border: 1px solid var(--border-color);
      border-radius: 10px;
      padding: 14px;
      cursor: pointer;
      transition: all 0.2s;
      position: relative;
    }

    .vessel-card:hover {
      border-color: var(--accent-blue);
      transform: translateX(4px);
    }

    .vessel-card.fleet {
      border-left: 3px solid var(--accent-orange);
    }

    .vessel-card.favorite {
      border-left: 3px solid var(--accent-purple);
    }

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

    .vessel-name {
      font-weight: 600;
      font-size: 14px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .vessel-badge {
      font-size: 10px;
      padding: 2px 6px;
      border-radius: 4px;
      font-weight: 600;
      text-transform: uppercase;
    }

    .badge-fleet {
      background: rgba(255, 149, 0, 0.2);
      color: var(--accent-orange);
    }

    .badge-favorite {
      background: rgba(168, 85, 247, 0.2);
      color: var(--accent-purple);
    }

    .vessel-actions {
      display: flex;
      gap: 4px;
    }

    .vessel-action-btn {
      width: 28px;
      height: 28px;
      border: none;
      background: transparent;
      color: var(--text-muted);
      border-radius: 6px;
      cursor: pointer;
      font-size: 14px;
      transition: all 0.15s;
    }

    .vessel-action-btn:hover {
      background: var(--bg-elevated);
      color: var(--text-primary);
    }

    .vessel-action-btn.favorited {
      color: var(--accent-purple);
    }

    .vessel-meta {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 4px 12px;
      font-size: 12px;
      color: var(--text-secondary);
    }

    .vessel-meta-item {
      display: flex;
      align-items: center;
      gap: 4px;
    }

    .vessel-meta-label {
      color: var(--text-muted);
    }

    .vessel-speed {
      font-family: 'JetBrains Mono', monospace;
      font-weight: 600;
    }

    .speed-moving {
      color: var(--accent-green);
    }

    .speed-slow {
      color: var(--accent-orange);
    }

    .speed-stopped {
      color: var(--accent-red);
    }

    /* ETA Section */
    .vessel-eta-list {
      margin-top: 10px;
      padding-top: 10px;
      border-top: 1px solid var(--border-color);
    }

    .eta-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 6px 0;
      font-size: 12px;
    }

    .eta-destination {
      color: var(--accent-blue);
    }

    .eta-time {
      color: var(--text-secondary);
      font-family: 'JetBrains Mono', monospace;
    }

    .eta-clear {
      color: var(--accent-red);
      cursor: pointer;
      margin-left: 8px;
    }

    /* Map Container */
    .map-container {
      flex: 1;
      position: relative;
    }

    #map {
      width: 100%;
      height: 100%;
    }

    /* Map Controls */
    .map-controls {
      position: absolute;
      bottom: 20px;
      left: 20px;
      display: flex;
      flex-direction: column;
      gap: 8px;
      z-index: 500;
    }

    .map-control-btn {
      width: 40px;
      height: 40px;
      background: var(--bg-elevated);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      color: var(--text-secondary);
      cursor: pointer;
      font-size: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: all 0.2s;
    }

    .map-control-btn:hover {
      background: var(--bg-tertiary);
      color: var(--text-primary);
      border-color: var(--accent-blue);
    }

    .map-control-btn.active {
      background: var(--accent-blue);
      color: var(--bg-primary);
      border-color: var(--accent-blue);
    }

    /* Layer Panel */
    .layer-panel {
      position: absolute;
      bottom: 20px;
      left: 70px;
      background: var(--bg-elevated);
      border: 1px solid var(--border-color);
      border-radius: 10px;
      padding: 16px;
      z-index: 500;
      display: none;
      min-width: 200px;
    }

    .layer-panel.active {
      display: block;
    }

    .layer-panel h4 {
      font-size: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      color: var(--text-muted);
      margin-bottom: 12px;
    }

    .layer-option {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 8px 0;
      cursor: pointer;
    }

    .layer-checkbox {
      width: 18px;
      height: 18px;
      border: 2px solid var(--border-color);
      border-radius: 4px;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: all 0.15s;
    }

    .layer-checkbox.checked {
      background: var(--accent-blue);
      border-color: var(--accent-blue);
    }

    .layer-checkbox::after {
      content: '✓';
      color: var(--bg-primary);
      font-size: 12px;
      opacity: 0;
    }

    .layer-checkbox.checked::after {
      opacity: 1;
    }

    /* Vessel Legend Panel */
    .vessel-legend-panel {
      position: absolute;
      bottom: 20px;
      right: 20px;
      background: var(--bg-elevated);
      border: 1px solid var(--border-color);
      border-radius: 10px;
      padding: 12px 14px;
      z-index: 500;
      display: none;
      min-width: 170px;
      max-width: 200px;
    }
    .vessel-legend-panel.active { display: block; }
    .vessel-legend-panel h4 {
      font-size: 11px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .legend-item {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 3px 0;
      font-size: 12px;
      color: var(--text-secondary);
    }
    .legend-swatch {
      width: 12px;
      height: 12px;
      border-radius: 2px;
      flex-shrink: 0;
    }
    .legend-ring {
      width: 14px;
      height: 14px;
      border-radius: 50%;
      flex-shrink: 0;
      border: 2px solid;
      background: transparent;
    }
    .legend-divider {
      border-top: 1px solid var(--border-color);
      margin: 6px 0;
    }
    .legend-toggle-btn {
      position: absolute;
      bottom: 20px;
      right: 20px;
      width: 40px;
      height: 40px;
      background: var(--bg-elevated);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      color: var(--text-secondary);
      cursor: pointer;
      font-size: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      z-index: 499;
      transition: all 0.2s;
    }
    .legend-toggle-btn:hover {
      background: var(--bg-tertiary);
      color: var(--text-primary);
      border-color: var(--accent-blue);
    }

    /* Stats Bar */
    .stats-bar {
      position: absolute;
      bottom: 20px;
      right: 20px;
      display: flex;
      gap: 12px;
      z-index: 500;
    }

    .stat-card {
      background: var(--bg-elevated);
      border: 1px solid var(--border-color);
      border-radius: 10px;
      padding: 12px 16px;
      min-width: 100px;
    }

    .stat-value {
      font-family: 'JetBrains Mono', monospace;
      font-size: 20px;
      font-weight: 700;
      color: var(--text-primary);
    }

    .stat-label {
      font-size: 11px;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-top: 2px;
    }

    /* Route polyline styles */
    .route-popup {
      font-family: 'JetBrains Mono', monospace;
      font-size: 12px;
      color: var(--text-primary);
      background: var(--bg-elevated);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 8px 12px;
    }

    /* Route line glow effect */
    .leaflet-overlay-pane svg path.leaflet-interactive {
      filter: drop-shadow(0 0 4px rgba(0, 212, 255, 0.4));
    }

    /* Marker cluster styling */
    .marker-cluster-small,
    .marker-cluster-medium,
    .marker-cluster-large {
      background-color: rgba(0, 212, 255, 0.15) !important;
      border: 2px solid rgba(0, 212, 255, 0.6) !important;
    }
    .marker-cluster-small div,
    .marker-cluster-medium div,
    .marker-cluster-large div {
      background-color: rgba(0, 212, 255, 0.35) !important;
      color: #e8edf5 !important;
      font-family: 'JetBrains Mono', monospace !important;
      font-weight: 700 !important;
      font-size: 12px !important;
    }
    .marker-cluster-fleet div  { background-color: rgba(249,115,22,0.4) !important; }
    .marker-cluster-fav div    { background-color: rgba(168,85,247,0.4) !important; }

    /* Custom Popup */
    .leaflet-popup-content-wrapper {
      background: var(--bg-elevated);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
      overflow: hidden;
    }

    .leaflet-popup-content {
      margin: 0;
      color: var(--text-primary);
      font-family: 'Inter', sans-serif;
      max-height: min(65vh, 480px);
      overflow-y: auto;
      overflow-x: hidden;
    }

    .leaflet-popup-tip {
      background: var(--bg-elevated);
      border: 1px solid var(--border-color);
    }

    /* Draggable popup header */
    .popup-drag-handle {
      cursor: grab;
      user-select: none;
      margin: 0;
      padding: 10px 12px 8px 12px;
      border-radius: 12px 12px 0 0;
      background: linear-gradient(180deg, rgba(255,255,255,0.05) 0%, transparent 100%);
      border-bottom: 1px solid var(--border-color);
      position: relative;
    }

    .popup-drag-handle::before {
      content: '';
      position: absolute;
      top: 6px;
      left: 50%;
      transform: translateX(-50%);
      width: 32px;
      height: 4px;
      background: var(--text-muted);
      border-radius: 2px;
      opacity: 0.5;
    }

    .popup-drag-handle:hover {
      background: linear-gradient(180deg, rgba(255,255,255,0.08) 0%, transparent 100%);
    }

    .popup-drag-handle:hover::before {
      opacity: 0.9;
      background: var(--accent-blue, #00d4ff);
    }

    .popup-drag-handle:active {
      cursor: grabbing;
    }

    .leaflet-popup.is-dragging {
      z-index: 10000 !important;
    }

    /* Popup connector line */
    #popupConnector {
      position: fixed; top: 0; left: 0; width: 100%; height: 100%;
      pointer-events: none; z-index: 999;
    }
    #popupConnectorLine {
      stroke: #00d4ff; stroke-width: 2; stroke-dasharray: 6 4;
      fill: none; opacity: 0.7;
    }
    #popupConnectorDot {
      fill: #00d4ff; opacity: 0.9;
    }

    /* Cell GPS vessel pulse ring */
    .cell-gps-pulse {
      position: absolute;
      top: -6px; left: -6px;
      width: 40px; height: 40px;
      border: 2px solid #00e676;
      border-radius: 50%;
      animation: cell-pulse 2s ease-out infinite;
      pointer-events: none;
    }
    @keyframes cell-pulse {
      0% { transform: scale(0.7); opacity: 0.8; }
      100% { transform: scale(1.6); opacity: 0; }
    }

    /* Fleet vessel pulsing ring */
    .fleet-ring {
      position: absolute;
      top: -4px; left: -4px;
      width: 36px; height: 36px;
      border: 2px solid #f97316;
      border-radius: 50%;
      /* STATIC ring (Ryan 2026-07-21): no flashing; color set inline per fleet */
      pointer-events: none;
      box-shadow: 0 0 6px rgba(249, 115, 22, 0.6);
    }
    @keyframes fleet-pulse {
      0%, 100% { transform: scale(1); opacity: 0.9; }
      50% { transform: scale(1.25); opacity: 0.3; }
    }

    /* Favorite vessel ring */
    .fav-ring {
      position: absolute;
      top: -5px; left: -5px;
      width: 38px; height: 38px;
      border: 2.5px solid #a855f7;
      border-radius: 50%;
      pointer-events: none;
      box-shadow: 0 0 8px rgba(168, 85, 247, 0.7), inset 0 0 4px rgba(168, 85, 247, 0.3);
      /* STATIC favorite ring (Ryan 2026-07-21): no flashing */
    }
    @keyframes fav-glow {
      0%, 100% { box-shadow: 0 0 8px rgba(168, 85, 247, 0.7), inset 0 0 4px rgba(168, 85, 247, 0.3); }
      50% { box-shadow: 0 0 14px rgba(168, 85, 247, 0.9), inset 0 0 6px rgba(168, 85, 247, 0.5); }
    }

    /* Lock & Dam markers */
    .lock-marker {
      display: flex; align-items: center; justify-content: center;
      width: 24px; height: 24px; border-radius: 4px;
      background: #e63946; border: 2px solid white;
      box-shadow: 0 2px 6px rgba(0,0,0,0.4);
      font-size: 12px; cursor: pointer;
    }
    .lock-popup { font-family: 'Inter', sans-serif; font-size: 12px; min-width: 220px; }
    .lock-popup-title { font-size: 14px; font-weight: 700; color: #e63946; margin-bottom: 6px; }
    .lock-popup-river { color: var(--accent-blue); font-size: 12px; margin-bottom: 8px; }
    .lock-popup-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 12px; }
    .lock-popup-label { color: var(--text-muted); font-size: 10px; text-transform: uppercase; }
    .lock-popup-val { color: var(--text-primary); font-weight: 500; }

    /* Lock & Dam markers */
    .lock-marker {
      display: flex; align-items: center; justify-content: center;
      width: 24px; height: 24px;
      background: #ff6b35; border: 2px solid #fff;
      border-radius: 4px; box-shadow: 0 2px 6px rgba(0,0,0,0.4);
      font-size: 12px; cursor: pointer;
    }
    .lock-popup-content {
      font-family: 'Inter', sans-serif; font-size: 12px; color: #c8d6e5;
      min-width: 240px;
    }
    .lock-popup-title {
      font-size: 14px; font-weight: 700; color: #ff6b35; margin-bottom: 4px;
    }
    .lock-popup-river {
      font-size: 12px; color: #00d4ff; margin-bottom: 8px;
    }
    .lock-popup-grid {
      display: grid; grid-template-columns: 1fr 1fr; gap: 6px;
    }
    .lock-popup-item {
      background: rgba(255,255,255,0.05); padding: 6px 8px; border-radius: 4px;
    }
    .lock-popup-item-label {
      font-size: 9px; color: #8b9bb4; text-transform: uppercase; letter-spacing: 0.5px;
    }
    .lock-popup-item-value {
      font-size: 13px; font-weight: 600; color: #c8d6e5; margin-top: 2px;
    }

    /* River Gauge markers */
    .gauge-marker {
      display: flex; align-items: center; justify-content: center;
      width: 18px; height: 18px; border-radius: 50%;
      border: 2px solid rgba(255,255,255,0.9);
      box-shadow: 0 2px 6px rgba(0,0,0,0.4);
      font-size: 9px; cursor: pointer;
      transition: transform 0.15s;
    }
    .gauge-marker:hover { transform: scale(1.3); }
    .gauge-marker.flood-none    { background: #2ecc71; }
    .gauge-marker.flood-action  { background: #f1c40f; }
    .gauge-marker.flood-minor   { background: #ff9500; }
    .gauge-marker.flood-moderate { background: #e74c3c; }
    .gauge-marker.flood-major   { background: #9b59b6; }
    .gauge-marker.flood-unknown { background: #7f8c8d; }

    /* Tide Station markers */
    .tide-marker {
      display: flex; align-items: center; justify-content: center;
      width: 16px; height: 16px; border-radius: 50%;
      border: 2px solid rgba(255,255,255,0.85);
      background: #00bcd4; box-shadow: 0 0 6px rgba(0,188,212,0.5);
      font-size: 8px; cursor: pointer;
      transition: transform 0.15s;
    }
    .tide-marker:hover { transform: scale(1.3); }

    .tide-popup { font-family: 'Inter', sans-serif; font-size: 12px; min-width: 220px; }
    .tide-popup-title { font-size: 14px; font-weight: 700; color: #00bcd4; margin-bottom: 4px; }
    .tide-popup-id { font-size: 10px; color: var(--text-muted); margin-bottom: 8px; }
    .tide-popup-entry {
      display: flex; align-items: baseline; gap: 8px; padding: 6px 8px;
      background: rgba(255,255,255,0.05); border-radius: 4px; margin-bottom: 4px;
    }
    .tide-popup-type {
      font-size: 11px; font-weight: 600; padding: 1px 6px;
      border-radius: 3px; min-width: 36px; text-align: center;
    }
    .tide-popup-type.high { background: rgba(0,188,212,0.2); color: #00e5ff; }
    .tide-popup-type.low  { background: rgba(255,152,0,0.2); color: #ffb74d; }
    .tide-popup-value {
      font-family: 'JetBrains Mono', monospace;
      font-size: 15px; font-weight: 600; color: var(--text-primary);
    }
    .tide-popup-time { font-size: 11px; color: var(--text-secondary); margin-left: auto; }

    .gauge-popup { font-family: 'Inter', sans-serif; font-size: 12px; min-width: 230px; }
    .gauge-popup-title { font-size: 14px; font-weight: 700; color: #2ecc71; margin-bottom: 2px; }
    .gauge-popup-river { color: var(--accent-blue); font-size: 12px; margin-bottom: 8px; }
    .gauge-popup-stage {
      display: flex; align-items: baseline; gap: 8px; margin-bottom: 8px;
      padding: 8px; background: rgba(255,255,255,0.05); border-radius: 6px;
    }
    .gauge-popup-stage-value {
      font-family: 'JetBrains Mono', monospace;
      font-size: 22px; font-weight: 700;
    }
    .gauge-popup-stage-unit { font-size: 12px; color: var(--text-muted); }
    .gauge-popup-stage-cat {
      font-size: 11px; font-weight: 600; padding: 2px 8px;
      border-radius: 4px; margin-left: auto;
    }
    .gauge-popup-thresholds {
      display: grid; grid-template-columns: 1fr 1fr; gap: 4px 12px;
      margin-bottom: 8px;
    }
    .gauge-popup-thresh-label { font-size: 10px; color: var(--text-muted); text-transform: uppercase; }
    .gauge-popup-thresh-val { font-size: 12px; font-weight: 500; }

    /* Bridge clearance markers */
    .bridge-marker {
      width: 18px; height: 14px;
      cursor: pointer;
      transition: transform 0.15s;
      filter: drop-shadow(0 1px 2px rgba(0,0,0,0.5));
    }
    .bridge-marker:hover { transform: scale(1.4); }

    /* NOAA Air Gap sensor markers */
    .airgap-marker {
      display: flex; align-items: center; justify-content: center;
      width: 14px; height: 14px; cursor: pointer;
      filter: drop-shadow(0 1px 3px rgba(0,0,0,0.5));
      transition: transform 0.15s;
    }
    .airgap-marker:hover { transform: scale(1.4); }

    .bridge-popup { font-family: 'Inter', sans-serif; font-size: 12px; max-width: 320px; min-width: 240px; }
    .bridge-popup-header { font-size: 1rem; font-weight: 600; margin-bottom: 4px; display: flex; align-items: center; }
    .bridge-popup-waterway { color: var(--text-secondary); font-size: 0.8rem; margin-bottom: 8px; }
    .bridge-popup-clearance {
      background: var(--bg-primary); border-radius: 4px; padding: 8px; margin-bottom: 8px;
    }
    .clearance-row { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; margin-bottom: 4px; }
    .clearance-label { color: var(--text-secondary); font-size: 0.8rem; }
    .clearance-value { font-family: 'JetBrains Mono', 'Consolas', monospace; font-weight: 600; font-size: 0.9rem; }
    .clearance-note { font-size: 0.7rem; color: var(--text-secondary); width: 100%; }
    .clearance-row.estimated {
      border-top: 1px solid var(--border-color); padding-top: 4px; margin-top: 4px;
    }
    .bridge-popup-meta { font-size: 0.75rem; color: var(--text-secondary); margin-bottom: 4px; }
    .bridge-popup-source {
      font-size: 0.7rem; color: var(--text-secondary); margin-top: 8px;
      padding-top: 6px; border-top: 1px solid var(--border-color);
    }
    .bridge-source-badge {
      display: inline-block; font-size: 0.6rem; font-weight: 600; padding: 1px 5px;
      border: 1px solid; border-radius: 9999px; margin-right: 4px; vertical-align: middle;
      letter-spacing: 0.5px;
    }
    .bridge-popup-disclaimer {
      font-size: 0.65rem; color: var(--text-muted); margin-top: 6px; padding: 6px;
      background: rgba(255,59,92,0.05); border-radius: 4px;
      border-left: 2px solid var(--accent-red); line-height: 1.4;
    }

    /* Nearby gauges in vessel popup */
    .popup-gauges { margin-top: 8px; padding-top: 8px; border-top: 1px solid var(--border-color); }
    .popup-gauges-header {
      font-weight: 600; font-size: 10px; color: var(--text-muted);
      text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 6px;
    }
    .popup-gauge-item {
      display: flex; align-items: center; gap: 8px;
      padding: 4px 0; font-size: 11px;
      min-width: 0;
    }
    .popup-gauge-dot {
      width: 10px; height: 10px; border-radius: 50%;
      border: 1.5px solid rgba(255,255,255,0.6); flex-shrink: 0;
    }
    .popup-gauge-info { flex: 1; min-width: 0; overflow: hidden; }
    .popup-gauge-name {
      font-weight: 600; color: var(--text-primary);
      overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    }
    .popup-gauge-meta { color: var(--text-muted); font-size: 10px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .popup-gauge-stage {
      font-family: 'JetBrains Mono', monospace;
      font-weight: 600; font-size: 12px; flex-shrink: 0; white-space: nowrap;
    }

    .leaflet-popup.is-dragging .leaflet-popup-tip-container {
      opacity: 0;
    }

    .popup-content {
      padding: 0;
      min-width: 240px;
      max-width: min(360px, 85vw);
      width: 340px;
    }

    @media (max-width: 600px) {
      .popup-content { max-width: 90vw; }
    }

    .popup-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 8px;
      padding-bottom: 8px;
      border-bottom: 1px solid var(--border-color);
    }

    .popup-title {
      font-size: 14px;
      font-weight: 700;
    }

    .popup-mmsi {
      font-family: 'JetBrains Mono', monospace;
      font-size: 10px;
      color: var(--text-muted);
    }

    .popup-grid {
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      gap: 4px;
    }

    .popup-item {
      background: var(--bg-tertiary);
      padding: 4px 6px;
      border-radius: 4px;
    }

    .popup-item-label {
      font-size: 9px;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 0.3px;
    }

    .popup-item-value {
      font-size: 12px;
      font-weight: 600;
      margin-top: 1px;
    }

    .popup-actions {
      display: flex;
      gap: 5px;
      margin-top: 8px;
      padding-top: 8px;
      border-top: 1px solid var(--border-color);
    }

    .popup-btn {
      flex: 1;
      height: 28px;
      border: none;
      border-radius: 5px;
      font-size: 11px;
      font-weight: 500;
      cursor: pointer;
      transition: all 0.15s;
    }

    .popup-btn-primary {
      background: var(--accent-blue);
      color: var(--bg-primary);
    }

    .popup-btn-primary:hover {
      filter: brightness(1.1);
    }

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

    .popup-btn-secondary:hover {
      border-color: var(--accent-blue);
      color: var(--text-primary);
    }

    /* Route Planner */
    .route-pulse-ring {
      animation: route-pulse 1.5s ease-out infinite;
    }
    @keyframes route-pulse {
      0% { transform: scale(0.5); opacity: 1; }
      100% { transform: scale(2); opacity: 0; }
    }
    .route-search-results {
      position: absolute; top: 100%; left: 0; right: 0; z-index: 1000;
      background: #1a2332; border: 1px solid #2a3648; border-radius: 6px;
      max-height: 200px; overflow-y: auto; display: none;
      box-shadow: 0 4px 12px rgba(0,0,0,0.5);
    }
    .route-search-results.active { display: block; }
    .route-search-item {
      padding: 8px 12px; cursor: pointer; border-bottom: 1px solid #2a3648;
      font-size: 13px; color: #c8d6e5;
    }
    .route-search-item:hover { background: #2a3648; }
    .route-search-item:last-child { border-bottom: none; }
    .route-search-item .river-name { color: #00d4ff; font-weight: 500; }
    .route-search-item .mile-info { color: #8b9bb4; font-size: 11px; }
    .route-confirmed-point {
      margin-top: 6px; padding: 8px 12px; background: #162029;
      border: 1px solid #00d4ff33; border-radius: 6px;
      font-size: 13px; color: #00d4ff; display: flex;
      justify-content: space-between; align-items: center;
    }
    .route-confirmed-point .change-btn {
      color: #8b9bb4; cursor: pointer; font-size: 11px;
    }
    .route-confirmed-point .change-btn:hover { color: #ff6b6b; }
    .saved-route-item {
      display: flex; justify-content: space-between; align-items: center;
      padding: 10px 12px; background: #1a2332; border-radius: 6px;
      margin-bottom: 6px; cursor: pointer;
      border: 1px solid #2a364800; transition: border-color 0.2s;
    }
    .saved-route-item:hover { border-color: #2a3648; }
    .saved-route-name { color: #c8d6e5; font-weight: 500; font-size: 13px; }
    .saved-route-meta { color: #8b9bb4; font-size: 11px; margin-top: 2px; }
    .saved-route-miles { color: #00d4ff; font-weight: 600; font-size: 14px; white-space: nowrap; }
    .saved-route-delete {
      color: #5a6a7e; cursor: pointer; font-size: 11px; margin-left: 10px;
    }
    .saved-route-delete:hover { color: #ff6b6b; }

    /* Settings Modal */
    .modal-overlay {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: rgba(0, 0, 0, 0.7);
      z-index: 2000;
      display: none;
      align-items: center;
      justify-content: center;
    }

    .modal-overlay.active {
      display: flex;
    }

    .modal {
      background: var(--bg-elevated);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      width: 100%;
      max-width: 480px;
      max-height: 85vh;
      overflow: hidden;
    }

    .modal-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 20px;
      border-bottom: 1px solid var(--border-color);
    }

    .modal-title {
      font-size: 18px;
      font-weight: 600;
    }

    .modal-close {
      width: 32px;
      height: 32px;
      border: none;
      background: transparent;
      color: var(--text-muted);
      cursor: pointer;
      font-size: 20px;
      border-radius: 6px;
      transition: all 0.15s;
    }

    .modal-close:hover {
      background: var(--bg-tertiary);
      color: var(--text-primary);
    }

    .modal-body {
      padding: 20px;
      overflow-y: auto;
      max-height: calc(85vh - 70px);
    }

    .setting-group {
      margin-bottom: 20px;
    }

    .setting-label {
      font-size: 13px;
      font-weight: 500;
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .setting-toggle {
      width: 50px;
      height: 28px;
      background: #3a3a4a;
      border: none;
      border-radius: 14px;
      position: relative;
      cursor: pointer;
      transition: background-color 0.3s ease;
      flex-shrink: 0;
    }

    .setting-toggle:hover {
      background: #4a4a5a;
    }

    .setting-toggle.active {
      background: var(--accent-blue);
    }

    .setting-toggle.active:hover {
      background: #4a9eff;
    }

    .setting-toggle::after {
      content: '';
      position: absolute;
      width: 22px;
      height: 22px;
      background: white;
      border-radius: 50%;
      top: 3px;
      left: 3px;
      transition: left 0.25s ease;
      box-shadow: 0 2px 4px rgba(0,0,0,0.3);
      pointer-events: none;
    }

    .setting-toggle.active::after {
      left: 25px;
    }

    .setting-select {
      width: 100%;
      height: 40px;
      background: var(--bg-tertiary);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 0 12px;
      color: var(--text-primary);
      font-size: 14px;
      cursor: pointer;
    }

    .setting-select:focus {
      outline: none;
      border-color: var(--accent-blue);
    }

    /* Empty State */
    .empty-state {
      text-align: center;
      padding: 40px 20px;
      color: var(--text-muted);
    }

    .empty-state-icon {
      font-size: 48px;
      margin-bottom: 16px;
      opacity: 0.5;
    }

    .empty-state-text {
      font-size: 14px;
    }

    /* Scrollbar */
    ::-webkit-scrollbar {
      width: 8px;
    }

    ::-webkit-scrollbar-track {
      background: var(--bg-secondary);
    }

    ::-webkit-scrollbar-thumb {
      background: var(--bg-elevated);
      border-radius: 4px;
    }

    ::-webkit-scrollbar-thumb:hover {
      background: var(--border-color);
    }

    /* Leaflet Overrides */
    .leaflet-control-zoom {
      border: none !important;
    }

    .leaflet-control-zoom a {
      background: var(--bg-elevated) !important;
      color: var(--text-primary) !important;
      border: 1px solid var(--border-color) !important;
    }

    .leaflet-control-zoom a:hover {
      background: var(--bg-tertiary) !important;
    }

    .leaflet-control-layers {
      background: var(--bg-elevated) !important;
      border: 1px solid var(--border-color) !important;
      border-radius: 8px !important;
      color: var(--text-primary) !important;
    }

    /* Vessel marker styling - no backgrounds or borders */
    .vessel-marker {
      background: none !important;
      background-color: transparent !important;
      border: none !important;
      box-shadow: none !important;
    }
    
    .leaflet-marker-icon.vessel-marker {
      background: transparent !important;
      background-color: transparent !important;
      border: none !important;
      box-shadow: none !important;
    }
    
    .leaflet-marker-icon {
      background: transparent !important;
    }
    
    .vessel-marker div {
      background: transparent !important;
    }

    /* Vessel hover tooltip — appears on mouseover, same concept as mile markers */
    .vessel-tooltip {
      background: var(--bg-elevated);
      border: 1px solid var(--border-color);
      color: var(--text-primary);
      font-family: 'JetBrains Mono', monospace;
      font-size: 11px;
      font-weight: 600;
      padding: 4px 8px;
      border-radius: 4px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
      letter-spacing: 0.3px;
    }

    .vessel-tooltip::before {
      border-top-color: var(--border-color) !important;
    }

    /* Weather Panel */
    .weather-panel {
      position: absolute;
      top: 70px;
      right: 20px;
      background: var(--bg-elevated);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 16px;
      min-width: 280px;
      max-width: 320px;
      z-index: 600;
      display: none;
    }

    .weather-panel.active {
      display: block;
    }

    .weather-panel-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 12px;
      padding-bottom: 12px;
      border-bottom: 1px solid var(--border-color);
    }

    .weather-panel-title {
      font-weight: 600;
      font-size: 14px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .weather-panel-close {
      background: none;
      border: none;
      color: var(--text-muted);
      cursor: pointer;
      font-size: 18px;
      padding: 4px;
    }

    .weather-panel-close:hover {
      color: var(--text-primary);
    }

    .weather-summary-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
    }

    .weather-summary-item {
      background: var(--bg-tertiary);
      padding: 10px;
      border-radius: 8px;
    }

    .weather-summary-label {
      font-size: 10px;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 0.3px;
    }

    .weather-summary-value {
      font-size: 16px;
      font-weight: 600;
      margin-top: 4px;
    }

    .weather-summary-vessel {
      font-size: 11px;
      color: var(--text-secondary);
      margin-top: 2px;
    }

    /* Weather in popup */
    .popup-weather {
      margin-top: 12px;
      padding-top: 12px;
      border-top: 1px solid var(--border-color);
    }

    .popup-weather-header {
      font-size: 11px;
      font-weight: 600;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .popup-weather-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 6px;
    }

    .popup-weather-item {
      background: var(--bg-tertiary);
      padding: 6px 8px;
      border-radius: 6px;
      text-align: center;
    }

    .popup-weather-label {
      font-size: 9px;
      color: var(--text-muted);
      text-transform: uppercase;
    }

    .popup-weather-value {
      font-size: 12px;
      font-weight: 600;
      margin-top: 2px;
    }

    .popup-weather-forecast {
      margin-top: 8px;
      padding: 8px;
      background: var(--bg-tertiary);
      border-radius: 6px;
      font-size: 12px;
    }

    .popup-weather-forecast-label {
      font-size: 9px;
      color: var(--text-muted);
      text-transform: uppercase;
      margin-bottom: 4px;
    }

    /* Weather alerts */
    .weather-alert {
      background: rgba(255, 59, 92, 0.15);
      border: 1px solid var(--accent-red);
      border-radius: 8px;
      padding: 10px;
      margin-top: 8px;
    }

    .weather-alert.severe {
      background: rgba(255, 59, 92, 0.25);
      animation: alert-pulse 2s infinite;
    }

    .weather-alert-title {
      font-size: 12px;
      font-weight: 600;
      color: var(--accent-red);
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .weather-alert-details {
      font-size: 11px;
      color: var(--text-secondary);
      margin-top: 4px;
    }

    .weather-alert-details a {
      cursor: pointer;
    }

    /* Alert Detail Modal */
    .alert-detail-overlay {
      position: fixed;
      top: 0; left: 0; right: 0; bottom: 0;
      background: rgba(0, 0, 0, 0.7);
      z-index: 10000;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 20px;
    }
    .alert-detail-modal {
      background: var(--bg-primary, #1a1a2e);
      border: 1px solid var(--border-color, #333);
      border-radius: 12px;
      max-width: 520px;
      width: 100%;
      max-height: 80vh;
      overflow-y: auto;
      padding: 24px;
      color: var(--text-primary, #e0e0e0);
      box-shadow: 0 8px 32px rgba(0,0,0,0.5);
    }
    .alert-detail-modal .alert-modal-header {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      margin-bottom: 16px;
    }
    .alert-detail-modal .alert-modal-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-primary, #e0e0e0);
      flex: 1;
      margin-right: 12px;
    }
    .alert-detail-modal .alert-modal-close {
      background: rgba(255,255,255,0.1);
      border: none;
      color: var(--text-secondary, #aaa);
      font-size: 18px;
      cursor: pointer;
      border-radius: 6px;
      width: 32px;
      height: 32px;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }
    .alert-detail-modal .alert-modal-close:hover {
      background: rgba(255,255,255,0.2);
      color: var(--text-primary, #e0e0e0);
    }
    .alert-detail-modal .alert-severity-badge {
      display: inline-block;
      padding: 3px 10px;
      border-radius: 4px;
      font-size: 11px;
      font-weight: 600;
      text-transform: uppercase;
      margin-bottom: 12px;
    }
    .alert-severity-badge.severity-extreme { background: #d32f2f; color: #fff; }
    .alert-severity-badge.severity-severe  { background: #e65100; color: #fff; }
    .alert-severity-badge.severity-moderate { background: #f9a825; color: #1a1a2e; }
    .alert-severity-badge.severity-minor   { background: #2e7d32; color: #fff; }
    .alert-severity-badge.severity-unknown { background: #555; color: #ccc; }
    .alert-detail-modal .alert-modal-section {
      margin-bottom: 14px;
    }
    .alert-detail-modal .alert-modal-section-label {
      font-size: 10px;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      color: var(--text-muted, #888);
      margin-bottom: 4px;
    }
    .alert-detail-modal .alert-modal-section-body {
      font-size: 13px;
      line-height: 1.5;
      color: var(--text-secondary, #ccc);
      white-space: pre-wrap;
    }
    .alert-detail-modal .alert-modal-timing {
      font-size: 11px;
      color: var(--text-muted, #888);
      margin-bottom: 14px;
    }

    @keyframes alert-pulse {
      0%, 100% { opacity: 1; }
      50% { opacity: 0.8; }
    }

    /* Radar opacity slider */
    .radar-slider-container {
      margin-top: 12px;
      padding-top: 12px;
      border-top: 1px solid var(--border-color);
    }

    .radar-slider-label {
      font-size: 12px;
      color: var(--text-secondary);
      margin-bottom: 8px;
      display: flex;
      justify-content: space-between;
    }

    .radar-slider {
      width: 100%;
      height: 8px;
      -webkit-appearance: none;
      appearance: none;
      background: linear-gradient(to right, var(--accent-blue) 0%, var(--accent-blue) var(--value, 60%), var(--bg-tertiary) var(--value, 60%), var(--bg-tertiary) 100%);
      border-radius: 4px;
      outline: none;
      cursor: pointer;
    }

    .radar-slider::-webkit-slider-thumb {
      -webkit-appearance: none;
      appearance: none;
      width: 20px;
      height: 20px;
      background: white;
      border-radius: 50%;
      cursor: pointer;
      box-shadow: 0 2px 6px rgba(0,0,0,0.3);
      transition: transform 0.15s;
    }

    .radar-slider::-webkit-slider-thumb:hover {
      transform: scale(1.1);
    }

    .radar-slider::-moz-range-thumb {
      width: 20px;
      height: 20px;
      background: white;
      border-radius: 50%;
      cursor: pointer;
      border: none;
      box-shadow: 0 2px 6px rgba(0,0,0,0.3);
    }

    /* Weather loading state */
    .weather-loading {
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 20px;
      color: var(--text-muted);
      font-size: 12px;
    }

    .weather-loading::before {
      content: '';
      width: 16px;
      height: 16px;
      border: 2px solid var(--border-color);
      border-top-color: var(--accent-blue);
      border-radius: 50%;
      margin-right: 8px;
      animation: spin 1s linear infinite;
    }

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

    /* Weather button in header */
    .weather-btn-active {
      background: var(--accent-blue) !important;
      color: var(--bg-primary) !important;
    }

    /* Setting divider */
    .setting-divider {
      height: 1px;
      background: var(--border-color);
      margin: 20px 0;
    }

    .setting-section-title {
      font-size: 11px;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-bottom: 16px;
    }

    .setting-input {
      width: 100%;
      height: 40px;
      background: var(--bg-tertiary);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 0 12px;
      color: var(--text-primary);
      font-size: 14px;
    }

    .setting-input:focus {
      outline: none;
      border-color: var(--accent-blue);
    }

    .setting-input::placeholder {
      color: var(--text-muted);
    }

    /* Fleet item card */
    .fleet-group-card {
      background: var(--bg-tertiary);
      border: 1px solid var(--border-color);
      border-radius: 10px;
      padding: 14px;
      margin-bottom: 12px;
    }

    .fleet-group-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 10px;
    }

    .fleet-group-name {
      font-weight: 600;
      font-size: 15px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .fleet-group-color {
      width: 12px;
      height: 12px;
      border-radius: 3px;
    }

    .fleet-group-actions {
      display: flex;
      gap: 6px;
    }

    .fleet-group-btn {
      background: var(--bg-elevated);
      border: 1px solid var(--border-color);
      color: var(--text-secondary);
      padding: 4px 10px;
      border-radius: 5px;
      cursor: pointer;
      font-size: 11px;
    }

    .fleet-group-btn:hover {
      border-color: var(--accent-blue);
      color: var(--text-primary);
    }

    .fleet-group-btn.delete:hover {
      border-color: var(--accent-red);
      color: var(--accent-red);
    }

    .fleet-vessel-list {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }

    .fleet-vessel-tag {
      background: var(--bg-elevated);
      border: 1px solid var(--border-color);
      padding: 4px 10px;
      border-radius: 15px;
      font-size: 12px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .fleet-vessel-remove {
      cursor: pointer;
      color: var(--text-muted);
      font-size: 14px;
    }

    .fleet-vessel-remove:hover {
      color: var(--accent-red);
    }

    .fleet-empty {
      color: var(--text-muted);
      font-size: 12px;
      font-style: italic;
    }

    /* Fleet vessel search (inside fleet cards) */
    .fleet-search-container {
      margin-top: 10px;
      position: relative;
    }

    .fleet-search-input {
      width: 100%;
      height: 32px;
      background: var(--bg-primary);
      border: 1px solid var(--border-color);
      border-radius: 6px;
      color: var(--text-primary);
      font-size: 12px;
      padding: 0 10px;
      outline: none;
      font-family: 'Inter', sans-serif;
    }

    .fleet-search-input:focus {
      border-color: var(--accent-blue);
    }

    .fleet-search-input::placeholder {
      color: var(--text-muted);
    }

    .fleet-search-results {
      position: absolute;
      top: 36px;
      left: 0;
      right: 0;
      background: var(--bg-elevated);
      border: 1px solid var(--border-color);
      border-radius: 6px;
      max-height: 180px;
      overflow-y: auto;
      z-index: 10;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
      display: none;
    }

    .fleet-search-results.active {
      display: block;
    }

    .fleet-search-result {
      padding: 8px 12px;
      cursor: pointer;
      font-size: 12px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid var(--border-color);
    }

    .fleet-search-result:last-child {
      border-bottom: none;
    }

    .fleet-search-result:hover {
      background: var(--bg-tertiary);
    }

    .fleet-search-result-name {
      font-weight: 600;
      color: var(--text-primary);
    }

    .fleet-search-result-mmsi {
      font-size: 10px;
      color: var(--text-muted);
      font-family: 'JetBrains Mono', monospace;
    }

    .fleet-search-result-add {
      color: var(--accent-blue);
      font-size: 11px;
      font-weight: 600;
    }

    /* Fleet select list */
    .fleet-select-item {
      background: var(--bg-tertiary);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 12px;
      margin-bottom: 8px;
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 10px;
      transition: all 0.15s;
    }

    .fleet-select-item:hover {
      border-color: var(--accent-blue);
      background: var(--bg-elevated);
    }

    /* Destination search results */
    .dest-result-item {
      background: var(--bg-tertiary);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 10px 12px;
      margin-bottom: 6px;
      cursor: pointer;
      transition: all 0.15s;
    }

    .dest-result-item:hover {
      border-color: var(--accent-blue);
      background: var(--bg-elevated);
    }

    .dest-result-mile {
      font-weight: 600;
      color: var(--accent-blue);
    }

    .dest-result-river {
      font-size: 12px;
      color: var(--text-secondary);
    }

    /* Mile marker clickable */
    .mile-marker-clickable {
      cursor: pointer !important;
    }

    .mile-marker-highlight {
      animation: mile-pulse 1s ease-in-out 3;
    }

    @keyframes mile-pulse {
      0%, 100% { transform: scale(1); }
      50% { transform: scale(1.3); }
    }

    /* Label size buttons */
    .label-size-btn {
      flex: 1;
      padding: 8px 12px;
      background: var(--bg-tertiary);
      border: 1px solid var(--border-color);
      border-radius: 6px;
      color: var(--text-secondary);
      cursor: pointer;
      font-size: 12px;
      transition: all 0.15s;
    }

    .label-size-btn:hover {
      border-color: var(--accent-blue);
      color: var(--text-primary);
    }

    .label-size-btn.active {
      background: var(--accent-blue);
      border-color: var(--accent-blue);
      color: white;
    }

    /* === BEACON PHASE 1 CSS START === */
    .beacon-sidebar {
      width: 360px;
      min-width: 360px;
      background: var(--bg-secondary);
      border-left: 1px solid var(--border-color);
      display: flex;
      flex-direction: column;
      transition: width 0.25s ease, min-width 0.25s ease, opacity 0.25s ease;
      overflow: hidden;
      z-index: 100;
    }

    .beacon-sidebar.collapsed {
      width: 0;
      min-width: 0;
      border-left: none;
      opacity: 0;
      pointer-events: none;
    }

    .beacon-toggle-btn {
      background: transparent;
      border: 1px solid var(--accent-blue);
      border-radius: 8px;
      color: var(--accent-blue);
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      font-family: 'JetBrains Mono', monospace;
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 0.5px;
      transition: background 0.15s, color 0.15s, border-color 0.15s;
      white-space: nowrap;
    }

    .beacon-toggle-btn:hover {
      background: rgba(0, 212, 255, 0.12);
      color: #fff;
      border-color: var(--accent-blue);
    }

    .beacon-toggle-btn.open {
      background: var(--accent-blue);
      color: #0a0e14;
    }

    .beacon-header {
      padding: 16px;
      border-bottom: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
    }

    .beacon-header-title {
      font-family: 'JetBrains Mono', monospace;
      font-size: 14px;
      font-weight: 700;
      color: var(--accent-blue);
      letter-spacing: 1px;
    }

    .beacon-welcome {
      padding: 20px 16px;
      color: var(--text-secondary);
      font-size: 13px;
      line-height: 1.5;
      text-align: center;
    }

    .beacon-messages {
      flex: 1;
      margin: 0 16px 16px;
      border: 1px dashed var(--border-color);
      border-radius: 8px;
      min-height: 120px;
    }

    @media (max-width: 768px) {
      .beacon-sidebar {
        position: fixed;
        top: 56px;
        right: 0;
        bottom: 0;
        z-index: 500;
      }
      .beacon-toggle-btn.open {
        background: var(--accent-blue);
        color: #0a0e14;
      }
    }
    .beacon-clear-btn {
      background: transparent;
      border: none;
      color: var(--text-muted, #8899aa);
      cursor: pointer;
      padding: 4px 6px;
      border-radius: 4px;
      transition: color 0.2s, background 0.2s;
      line-height: 0;
    }

    .beacon-clear-btn:hover {
      color: var(--accent-red, #ff4444);
      background: rgba(255, 68, 68, 0.1);
    }

    /* === BEACON PHASE 1 CSS END === */

    /* === BEACON PHASE 2 CSS START === */
    .beacon-messages {
      flex: 1;
      margin: 0;
      border: none;
      border-radius: 0;
      min-height: 0;
      padding: 12px 16px;
      overflow-y: auto;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .beacon-msg {
      max-width: 85%;
      padding: 8px 12px;
      border-radius: 10px;
      font-size: 13px;
      line-height: 1.45;
      word-wrap: break-word;
    }

    .beacon-msg-user {
      align-self: flex-end;
      background: var(--accent-blue);
      color: #0a0e14;
      border-bottom-right-radius: 2px;
    }

    .beacon-msg-bot {
      align-self: flex-start;
      background: var(--bg-tertiary, #1a1f2b);
      color: var(--text-primary);
      border: 1px solid var(--border-color);
      border-bottom-left-radius: 2px;
    }

    .beacon-msg-loading {
      align-self: flex-start;
      color: var(--text-secondary);
      font-style: italic;
      padding: 8px 12px;
      font-size: 13px;
    }

    .beacon-input-area {
      padding: 12px 16px;
      border-top: 1px solid var(--border-color);
      display: flex;
      gap: 8px;
      align-items: center;
    }

    .beacon-input {
      flex: 1;
      background: var(--bg-primary, #0a0e14);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      color: var(--text-primary);
      padding: 8px 12px;
      font-size: 13px;
      font-family: inherit;
      outline: none;
      transition: border-color 0.15s;
    }

    .beacon-input:focus {
      border-color: var(--accent-blue);
    }

    .beacon-input::placeholder {
      color: var(--text-secondary);
      opacity: 0.6;
    }

    .beacon-send-btn {
      background: var(--accent-blue);
      border: none;
      border-radius: 8px;
      color: #0a0e14;
      cursor: pointer;
      padding: 8px 14px;
      font-family: 'JetBrains Mono', monospace;
      font-size: 12px;
      font-weight: 600;
      white-space: nowrap;
      transition: opacity 0.15s;
    }

    .beacon-send-btn:hover {
      opacity: 0.85;
    }

    .beacon-send-btn:disabled {
      opacity: 0.4;
      cursor: not-allowed;
    }

    @media (max-width: 768px) {
      .beacon-input-area {
        padding: 10px 12px;
      }
      .beacon-input {
        font-size: 16px;  /* prevent iOS zoom */
      }
    }
    /* Portrait / narrow phones: the composer is a single-row flex, so the text box
       + Send + the 🎤🔊🗣️ buttons used to overflow off the right edge. Let it WRAP —
       text box takes the full first row, Send + voice buttons sit on the next row,
       and the whole BEACON panel column stays within the viewport (no h-scroll). */
    @media (max-width: 600px) {
      .beacon-sidebar {
        width: 100vw;
        min-width: 0;
        max-width: 100vw;
      }
      .beacon-input-area {
        flex-wrap: wrap;
        gap: 6px;
        padding: 8px 10px calc(8px + env(safe-area-inset-bottom, 0px));
      }
      .beacon-input {
        flex: 1 1 100%;     /* text box on its own first row */
        min-width: 0;
        font-size: 16px;    /* prevents iOS zoom */
      }
      /* Row 2: Send + the 🎤🔊🗣️ buttons DIVIDE the row (flex-basis 0 + min-width 0),
         so they share the width and can NEVER overflow off the screen. */
      .beacon-send-btn {
        flex: 1.6 1 0;
        min-width: 0;
        height: 46px;
      }
      #rb2-beacon-spk, #rb2-beacon-voice, #rb2-beacon-mic {
        flex: 1 1 0 !important;
        min-width: 0 !important;
        width: auto !important;
        height: 46px !important;
        font-size: 22px !important;
      }
      .beacon-messages {
        margin: 0 10px 8px;
        min-height: 0;      /* let the messages box shrink so the composer always fits */
      }
      .beacon-welcome {
        padding: 12px 14px;
        font-size: 12px;
      }
      /* Marine fuel/services category selector → a partial-height BOTTOM SHEET on the
         phone (was a 228px panel covering the map). Map stays visible above it; the
         sheet sits above the mobile bottom-nav and scrolls internally. (Overrides the
         inline panel styles set in beacon.js _ensurePoiFilterPanel.) */
      #poiFilterPanel {
        top: auto !important;
        bottom: calc(64px + env(safe-area-inset-bottom, 0px)) !important;
        left: 8px !important;
        right: 8px !important;
        width: auto !important;
        max-height: 44vh !important;
        border-radius: 14px 14px 10px 10px !important;
        z-index: 2400 !important;   /* above the locate/BEACON FABs (1990) + nav */
      }
    }
    /* === BEACON PHASE 2 CSS END === */

    /* === MULTI-STOP ROUTE BUILDER === */
    .route-builder {
      margin-top: 8px;
      padding: 10px;
      background: var(--bg-primary);
      border-radius: 8px;
      border: 1px solid var(--border-color);
    }
    .route-builder-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 10px;
    }
    .route-builder-title {
      font-size: 12px;
      font-weight: 600;
      color: var(--accent-blue);
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .route-builder-title svg {
      width: 14px;
      height: 14px;
      stroke: var(--accent-blue);
      fill: none;
      stroke-width: 2;
    }
    .route-builder-close {
      cursor: pointer;
      color: var(--text-muted);
      font-size: 14px;
      padding: 2px 4px;
      border-radius: 3px;
      transition: color 0.15s;
    }
    .route-builder-close:hover {
      color: var(--text-primary);
    }
    .route-builder-stop {
      display: flex;
      align-items: flex-start;
      gap: 6px;
      margin-bottom: 6px;
      padding: 6px;
      background: var(--bg-tertiary);
      border-radius: 6px;
      border-left: 2px solid var(--accent-blue);
    }
    .route-builder-stop-num {
      min-width: 20px;
      height: 20px;
      border-radius: 50%;
      background: var(--accent-blue);
      color: var(--bg-primary);
      font-size: 10px;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-top: 2px;
      flex-shrink: 0;
    }
    .route-builder-stop-fields {
      flex: 1;
      min-width: 0;
      display: flex;
      flex-direction: column;
      gap: 4px;
    }
    .route-builder-river-wrap {
      position: relative;
    }
    .route-builder-river-input {
      width: 100%;
      box-sizing: border-box;
      background: var(--bg-primary);
      border: 1px solid var(--border-color);
      border-radius: 4px;
      color: var(--text-primary);
      padding: 5px 8px;
      font-size: 11px;
    }
    .route-builder-river-input:focus {
      border-color: var(--accent-blue);
      outline: none;
      box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.15);
    }
    .route-builder-river-input::placeholder { color: var(--text-muted); }
    .route-builder-river-dd {
      display: none;
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      z-index: 100;
      max-height: 140px;
      overflow-y: auto;
      background: var(--bg-elevated);
      border: 1px solid var(--border-color);
      border-top: none;
      border-radius: 0 0 4px 4px;
      box-shadow: 0 4px 12px rgba(0,0,0,0.4);
    }
    .route-builder-river-dd.open { display: block; }
    .route-builder-river-opt {
      padding: 5px 8px;
      font-size: 11px;
      color: var(--text-primary);
      cursor: pointer;
      transition: background 0.1s;
    }
    .route-builder-river-opt:hover {
      background: var(--bg-tertiary);
      color: var(--accent-blue);
    }
    .route-builder-river-opt.selected {
      background: rgba(0, 212, 255, 0.1);
      color: var(--accent-blue);
      font-weight: 600;
    }
    .route-builder-row {
      display: flex;
      gap: 4px;
    }
    .route-builder-mile {
      width: 60px;
      background: var(--bg-primary);
      border: 1px solid var(--border-color);
      border-radius: 4px;
      color: var(--text-primary);
      padding: 5px 6px;
      font-size: 11px;
      font-family: 'Consolas', monospace;
    }
    .route-builder-mile:focus {
      border-color: var(--accent-blue);
      outline: none;
    }
    .route-builder-mile::placeholder { color: var(--text-muted); }
    .route-builder-label {
      flex: 1;
      background: var(--bg-primary);
      border: 1px solid var(--border-color);
      border-radius: 4px;
      color: var(--text-secondary);
      padding: 5px 6px;
      font-size: 11px;
    }
    .route-builder-label:focus {
      border-color: var(--accent-blue);
      outline: none;
      color: var(--text-primary);
    }
    .route-builder-label::placeholder { color: var(--text-muted); }
    .route-builder-stop-rm {
      cursor: pointer;
      color: var(--text-muted);
      font-size: 12px;
      padding: 2px;
      margin-top: 2px;
      flex-shrink: 0;
      transition: color 0.15s;
    }
    .route-builder-stop-rm:hover { color: var(--accent-red); }
    .route-builder-add-stop {
      text-align: center;
      padding: 6px;
      margin: 4px 0 8px;
      cursor: pointer;
      color: var(--accent-blue);
      font-size: 11px;
      font-weight: 500;
      border: 1px dashed var(--border-color);
      border-radius: 4px;
      transition: all 0.15s;
    }
    .route-builder-add-stop:hover {
      border-color: var(--accent-blue);
      background: rgba(0, 212, 255, 0.05);
    }
    .route-builder-actions {
      display: flex;
      gap: 6px;
    }
    .route-builder-actions button {
      flex: 1;
      padding: 7px 0;
      border: none;
      border-radius: 5px;
      font-size: 12px;
      font-weight: 600;
      cursor: pointer;
      transition: opacity 0.15s;
    }
    .route-builder-actions button:hover { opacity: 0.85; }
    .route-builder-cancel {
      background: var(--bg-tertiary);
      color: var(--text-secondary);
      border: 1px solid var(--border-color) !important;
    }
    .route-builder-create {
      background: var(--accent-green);
      color: var(--bg-primary);
    }
    .route-builder-create:disabled {
      opacity: 0.4;
      cursor: not-allowed;
    }
    .route-builder-create:disabled:hover { opacity: 0.4; }

    /* Waypoint route leg status icons */
    .wp-leg { padding: 3px 0; }
    .wp-leg + .wp-leg { border-top: 1px solid rgba(255,255,255,0.04); }
    .wp-leg-header { display: flex; align-items: center; gap: 5px; }
    .wp-leg-icon {
      width: 14px;
      font-size: 10px;
      text-align: center;
      flex-shrink: 0;
    }
    .wp-leg-label {
      font-size: 11px;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
      flex: 1;
    }
    .wp-leg-detail {
      margin-left: 19px;
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      gap: 2px;
      margin-top: 2px;
      font-family: 'Consolas', monospace;
    }
    .wp-leg.completed .wp-leg-label {
      text-decoration: line-through;
      color: var(--text-muted);
    }
    .wp-leg.completed .wp-leg-icon { color: var(--accent-green); }
    .wp-leg.active .wp-leg-label { font-weight: 600; color: var(--accent-blue); }
    .wp-leg.active .wp-leg-icon { color: var(--accent-blue); }
    .wp-leg.future .wp-leg-label { color: var(--text-muted); }
    .wp-leg.future .wp-leg-icon { color: var(--text-muted); }
    /* === END MULTI-STOP ROUTE BUILDER === */

    /* === PICREP Lightbox === */
    .picrep-thumb {
      cursor: pointer; border-radius: 4px; border: 1px solid var(--border-color);
      max-width: 100%; transition: opacity 0.2s; display: block;
    }
    .picrep-thumb:hover { opacity: 0.8; }
    .picrep-lightbox {
      display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%;
      background: rgba(0,0,0,0.88); z-index: 10000; align-items: center; justify-content: center;
    }
    .picrep-lightbox.active { display: flex; }
    .picrep-lightbox img {
      max-width: 95vw; max-height: 90vh; border-radius: 6px;
      box-shadow: 0 4px 30px rgba(0,0,0,0.5);
    }
    .picrep-lightbox-close {
      position: absolute; top: 16px; right: 24px; color: #fff; font-size: 2rem;
      cursor: pointer; z-index: 10001; background: rgba(0,0,0,0.5); border-radius: 50%;
      width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
      border: none; line-height: 1;
    }