:root {
      --bg: #f8f9fa;
      --panel: #fff;
      --border: #dcdfe3;
      --text: #222;
      --accent: #0d6efd;
      --modal-bg: #ffffff;
      --panel-bg-translucent: rgba(255, 255, 255, 0.4);
      --panel-text: #222;
    }

    .dark {
      --bg: #121212;
      --panel: #1e1e1e;
      --border: #333;
      --text: #e0e0e0;
      --accent: #66aaff;
      --modal-bg: #1e1e1e;
      --panel-bg-translucent: rgba(0, 0, 0, 0.4);
      --panel-text: #fff;
    }

    /* ... existing styles ... */

    .chat-bubble p:last-child {
      margin: 0;
    }

    /* Typing Indicator */
    .typing-indicator {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      padding: 4px 0;
    }

    .typing-indicator span {
      width: 6px;
      height: 6px;
      background-color: var(--text);
      border-radius: 50%;
      opacity: 0.6;
      animation: blink 1.4s infinite both;
    }

    .typing-indicator span:nth-child(1) {
      animation-delay: 0s;
    }

    .typing-indicator span:nth-child(2) {
      animation-delay: 0.2s;
    }

    .typing-indicator span:nth-child(3) {
      animation-delay: 0.4s;
    }

    @keyframes blink {
      0% {
        opacity: 0.2;
        transform: scale(0.8);
      }

      50% {
        opacity: 1;
        transform: scale(1);
      }

      100% {
        opacity: 0.2;
        transform: scale(0.8);
      }
    }

    body {
      margin: 0;
      font-family: system-ui, -apple-system, Segoe UI, Roboto;
      background: var(--bg);
      color: var(--text);
      display: flex;
      height: 100vh;
    }

    #sidebar {
      width: 390px;
      border-right: 1px solid var(--border);
      padding: 14px 16px;
      box-sizing: border-box;
      display: flex;
      flex-direction: column;
      gap: 14px;
      background: var(--panel);
      overflow-y: auto;
    }

    h2 {
      margin: 0 0 8px;
      font-size: 18px;
    }

    h3 {
      margin: 20px 0 8px;
      font-size: 14px;
      letter-spacing: .5px;
      opacity: .85;
    }

    .card {
      background: var(--panel);
      border: 1px solid var(--border);
      padding: 10px 12px;
      border-radius: 8px;
      font-size: 12px;
      line-height: 1.55;
    }

    .stats-grid {
      display: flex;
      flex-direction: column;
      gap: 12px;
      font-size: 11px;
    }

    .stat-section {
      background: rgba(0, 0, 0, .03);
      padding: 10px;
      border-radius: 6px;
      border-left: 3px solid var(--accent);
    }

    .dark .stat-section {
      background: rgba(255, 255, 255, .03);
    }

    .stat-section-total {
      border-left-color: #28a745;
      background: rgba(40, 167, 69, 0.08);
    }

    .dark .stat-section-total {
      background: rgba(40, 167, 69, 0.12);
    }

    .stat-header {
      font-size: 12px;
      font-weight: 600;
      margin-bottom: 8px;
      opacity: 0.9;
      letter-spacing: 0.3px;
    }

    .stat-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 8px;
    }

    .stat-item {
      text-align: center;
    }

    .stat-label {
      font-size: 10px;
      opacity: 0.7;
      margin-bottom: 4px;
    }

    .stat-value {
      font-size: 16px;
      font-weight: 700;
      color: var(--accent);
    }

    .stat-value-highlight {
      font-size: 18px;
      color: #28a745;
    }

    label {
      font-size: 11px;
      display: block;
      margin-bottom: 4px;
      font-weight: 600;
    }

    input[type=text] {
      width: 100%;
      padding: 6px 8px;
      border: 1px solid var(--border);
      border-radius: 4px;
      background: var(--bg);
      color: var(--text);
      font-size: 12px;
    }

    button {
      cursor: pointer;
      border: 1px solid var(--border);
      background: var(--panel);
      color: var(--text);
      padding: 6px 10px;
      font-size: 12px;
      border-radius: 4px;
    }

    button.primary {
      background: var(--accent);
      color: #fff;
      border: none;
    }

    button.danger {
      background: #dc3545;
      color: #fff;
      border: none;
    }

    a.nav-link {
      display: block;
      text-decoration: none;
      padding: 8px 10px;
      background: var(--accent);
      color: #fff;
      text-align: center;
      border-radius: 6px;
      font-size: 13px;
      margin-top: 4px;
    }

    #main {
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    #mapsWrap {
      flex: 1;
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      grid-template-rows: 1fr 1fr;
      gap: 8px;
      padding: 10px 12px;
    }

    .map-panel-full {
      grid-column: 1 / -1;
    }

    .map-panel {
      position: relative;
      border: 1px solid var(--border);
      border-radius: 8px;
      overflow: hidden;
      background: #000;
    }

    .map-panel h4 {
      position: absolute;
      top: 6px;
      left: 10px;
      margin: 0;
      padding: 4px 8px;
      font-size: 12px;
      background: rgba(0, 0, 0, .55);
      color: #fff;
      border-radius: 4px;
      letter-spacing: .5px;
      z-index: 10;
    }

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

    #footerBar {
      padding: 6px 12px;
      border-top: 1px solid var(--border);
      font-size: 11px;
      display: flex;
      gap: 10px;
      align-items: center;
      background: var(--panel);
    }

    .pill {
      background: var(--accent);
      color: #fff;
      padding: 2px 6px;
      border-radius: 10px;
      font-size: 11px;
    }

    .flex {
      display: flex;
      gap: 8px;
    }

    /* Smaller unit text in stats */
    .unit-small {
      font-size: 0.6em;
      opacity: 0.8;
      font-weight: normal;
      margin-left: 2px;
    }

    /* Map Legend Indicators */
    .legend-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      margin-right: 4px;
      vertical-align: middle;
    }

    .legend-dot.train {
      background-color: #ff6b6b;
    }

    .legend-dot.plane {
      background-color: #4dabf7;
    }

    /* Chat Interface */
    .chat-message {
      display: flex;
      margin-bottom: 12px;
      width: 100%;
    }

    .chat-message.user {
      justify-content: flex-end;
    }

    .chat-message.gemini {
      justify-content: flex-start;
    }

    .chat-bubble {
      max-width: 80%;
      padding: 10px 14px;
      border-radius: 12px;
      font-size: 13px;
      line-height: 1.5;
      position: relative;
      word-wrap: break-word;
    }

    .chat-message.user .chat-bubble {
      background-color: var(--accent);
      color: #fff;
      border-bottom-right-radius: 2px;
    }

    .chat-message.gemini .chat-bubble {
      background-color: var(--panel);
      border: 1px solid var(--border);
      color: var(--text);
      border-bottom-left-radius: 2px;
    }

    .chat-bubble p {
      margin: 0 0 8px 0;
    }

    .chat-bubble p:last-child {
      margin: 0;
    }