* { margin: 0; padding: 0; box-sizing: border-box; }
  body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background: #0a0a1a;
    color: #fff;
    overflow: hidden;
  }
  #container { width: 100vw; height: 100vh; }

  /* HUD Overlay */
  #hud {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 15px 20px;
    background: linear-gradient(180deg, rgba(0,0,0,0.8) 0%, transparent 100%);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    pointer-events: none;
    z-index: 100;
  }
  #hud > * { pointer-events: auto; }

  .hud-title {
    font-size: 24px;
    font-weight: 600;
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
  }
  .hud-subtitle {
    font-size: 12px;
    color: #888;
    margin-top: 2px;
  }

  /* Legend */
  #legend {
    background: rgba(20,20,40,0.9);
    border: 1px solid #333;
    border-radius: 8px;
    padding: 12px 16px;
    min-width: 180px;
  }
  #legend h3 {
    font-size: 12px;
    color: #888;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
  }
  .legend-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 6px 0;
    font-size: 13px;
  }
  .legend-color {
    width: 16px;
    height: 16px;
    border-radius: 3px;
    box-shadow: 0 0 10px currentColor;
  }

  /* Info Panel */
  #info-panel {
    position: fixed;
    bottom: 20px;
    left: 20px;
    background: rgba(20,20,40,0.95);
    border: 1px solid #444;
    border-radius: 12px;
    padding: 20px;
    min-width: 320px;
    max-width: 400px;
    transform: translateY(150%);
    transition: transform 0.3s ease;
    z-index: 100;
  }
  #info-panel.visible { transform: translateY(0); }
  #info-panel h2 {
    font-size: 18px;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 10px;
  }
  #info-panel .zone-type {
    font-size: 11px;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 1px;
  }
  .info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 15px;
  }
  .info-stat {
    background: rgba(255,255,255,0.05);
    padding: 10px 12px;
    border-radius: 6px;
  }
  .info-stat label {
    font-size: 10px;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 1px;
  }
  .info-stat .value {
    font-size: 20px;
    font-weight: 600;
    margin-top: 2px;
  }
  .info-stat .value.risk-high { color: #ff4757; }
  .info-stat .value.risk-medium { color: #ffa502; }
  .info-stat .value.risk-low { color: #2ed573; }

  .findings-list {
    margin-top: 15px;
    max-height: 150px;
    overflow-y: auto;
  }
  .finding-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    font-size: 13px;
  }
  .finding-item:last-child { border-bottom: none; }
  .finding-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
  }

  /* Controls */
  #controls {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 100;
  }
  .control-btn {
    background: rgba(20,20,40,0.9);
    border: 1px solid #444;
    border-radius: 8px;
    padding: 12px;
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
  }
  .control-btn:hover {
    background: rgba(40,40,80,0.9);
    border-color: #666;
  }
  .control-btn.active {
    background: rgba(50,100,200,0.5);
    border-color: #4a9eff;
  }

  /* Minimap */
  #minimap {
    position: fixed;
    top: 80px;
    right: 20px;
    width: 180px;
    height: 180px;
    background: rgba(20,20,40,0.9);
    border: 1px solid #444;
    border-radius: 8px;
    overflow: hidden;
    z-index: 100;
  }
  #minimap canvas {
    width: 100%;
    height: 100%;
  }
  #minimap-marker {
    position: absolute;
    width: 10px;
    height: 10px;
    background: #4a9eff;
    border: 2px solid #fff;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 10px #4a9eff;
  }

  /* Navigation hints */
  #nav-hints {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(20,20,40,0.8);
    border-radius: 20px;
    padding: 8px 20px;
    font-size: 12px;
    color: #888;
    z-index: 100;
  }
  #nav-hints kbd {
    background: rgba(255,255,255,0.1);
    padding: 2px 6px;
    border-radius: 3px;
    margin: 0 2px;
  }

  /* Loading */
  #loading {
    position: fixed;
    inset: 0;
    background: #0a0a1a;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: opacity 0.5s;
  }
  #loading.hidden {
    opacity: 0;
    pointer-events: none;
  }
  .loader {
    width: 60px;
    height: 60px;
    border: 3px solid #333;
    border-top-color: #4a9eff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
  }
  @keyframes spin { to { transform: rotate(360deg); } }
  #loading p {
    margin-top: 20px;
    color: #888;
  }