#terrain-viewer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1200;
  background: #0B0F1A;
}

#terrain-viewer-container {
  width: 100%;
  height: 100%;
}

#terrain-viewer-close {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 1201;
  background: rgba(15, 19, 32, 0.85);
  border: 1px solid rgba(215, 181, 109, 0.3);
  color: #f7f7fb;
  border-radius: 10px;
  padding: 10px 20px;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
  transition: background 0.2s;
}

#terrain-viewer-close:hover {
  background: rgba(215, 181, 109, 0.15);
}

#terrain-viewer-info {
  position: absolute;
  bottom: 20px;
  left: 20px;
  z-index: 1201;
  background: rgba(15, 19, 32, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  padding: 18px;
  max-width: 300px;
  font-family: 'Inter', sans-serif;
  backdrop-filter: blur(10px);
}

#terrain-viewer-info h4 {
  color: #d7b56d;
  margin: 0 0 8px 0;
  font-size: 0.95rem;
  font-weight: 600;
}

#terrain-viewer-info p {
  color: #94a3b8;
  margin: 0 0 4px 0;
  font-size: 0.8rem;
  line-height: 1.5;
}

#terrain-viewer-info .stat {
  color: #f7f7fb;
  font-weight: 600;
}

#terrain-viewer-loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 1202;
  background: #0B0F1A;
}

#terrain-viewer-loading .spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(215, 181, 109, 0.2);
  border-top-color: #d7b56d;
  border-radius: 50%;
  animation: terrain-spin 0.8s linear infinite;
}

#terrain-viewer-loading p {
  color: #94a3b8;
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  margin-top: 16px;
}

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

/* Override Cesium default UI to match dark theme */
.cesium-viewer-bottom {
  display: none !important;
}

.cesium-viewer .cesium-widget-credits {
  display: none !important;
}

.cesium-viewer .cesium-viewer-toolbar {
  display: none !important;
}

.cesium-viewer .cesium-viewer-fullscreenContainer {
  display: none !important;
}

.cesium-viewer .cesium-viewer-infoBoxComplete {
  display: none !important;
}

/* Subsurface toggle button */
#terrain-subsurface-btn {
  transition: all 0.2s;
}

#terrain-subsurface-btn:hover {
  background: rgba(0, 229, 255, 0.2) !important;
  border-color: rgba(0, 229, 255, 0.5) !important;
}

#terrain-subsurface-btn.active {
  background: rgba(0, 229, 255, 0.25) !important;
  border-color: #00e5ff !important;
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.2);
}