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

:root {
  --background: #222;
  --foreground: #FFF;
  --primary: #0000F1;
  --secondary: #666;
  --primary-active: #96BFE6;
  --primary-hover: #4F8FE6;
  --danger: #FA2B00;
  --danger-hover: #FF616B;
}

html,
body,
#root {
  height: 100%;
  width: 100%;
  overflow: hidden;
}

.app {
  display: flex;
  height: 100vh;
  width: 100vw;
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu,
    sans-serif;
}

/* Menu Toggle Button */
.menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 200;
  width: 44px;
  height: 44px;
  background: var(--background);
  color: var(--foreground);
  border: 1px solid #333;
  border-radius: 8px;
  font-size: 24px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.menu-toggle:hover {
  background: var(--primary-hover);
}

/* Sidebar Overlay */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 149;
}

/* Sidebar */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  height: 100%;
  width: 280px;
  background: var(--background);
  color: var(--foreground);
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-right: 1px solid #333;
  overflow-y: auto;
  z-index: 150;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
}

.sidebar--open {
  transform: translateX(0);
}

.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 12px;
  border-bottom: 1px solid #333;
}

.sidebar-header .sidebar-title {
  padding-bottom: 0;
  border-bottom: none;
}

.sidebar-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: transparent;
  color: var(--foreground);
  border: 1px solid #333;
  border-radius: 4px;
  font-size: 20px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.sidebar-close:hover {
  background: var(--primary-hover);
}

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

.model-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.model-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: var(--secondary);
  border-radius: 8px;
  transition: all 0.2s ease;
}

.model-name {
  font-size: 14px;
}

.add-model-btn {
  padding: 6px 12px;
  background: var(--primary);
  color: var(--foreground);
  border: none;
  border-radius: 4px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.add-model-btn:hover {
  background: var(--primary-hover);
}

/* Main Content */
.main-content {
  flex: 1;
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  height: 100%;
}

.scene-container {
  flex: 1;
  background: #4a4a4a;
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 0;
}

.spin-button {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  padding: 12px 24px;
  background: var(--primary);
  color: var(--foreground);
  border: none;
  border-radius: 8px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
  z-index: 100;
}

.spin-button:hover {
  background: var(--primary-hover);
}

.spin-button:active,
.spin-button.active {
  background: var(--primary-active);
}

/* Overlay Controls */
.overlay-controls {
  position: absolute;
  top: 16px;
  left: 16px;
  display: flex;
  gap: 12px;
  z-index: 100;
}

.camera-selector-wrapper {
  background: rgba(26, 26, 46, 0.9);
  border-radius: 8px;
  padding: 8px;
}

.camera-selector {
  background: var(--primary);
  color: var(--foreground);
  border: none;
  border-radius: 4px;
  padding: 8px;
  font-size: 12px;
  cursor: pointer;
  outline: none;
}

.camera-selector:hover {
  border-color: var(--primary-hover);
}

.camera-selector:focus {
  border-color: var(--primary-hover);
}

/* Backdrop Upload */
.backdrop-upload {
  background: rgba(26, 26, 46, 0.9);
  border-radius: 8px;
  padding: 8px;
  display: flex;
  gap: 8px;
}

.upload-backdrop,
.clear-backdrop {
  background: var(--primary);
  color: var(--foreground);
  border: none;
  border-radius: 4px;
  padding: 8px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.upload-backdrop:hover,
.clear-backdrop:hover {
  background: var(--primary-hover);
}

.clear-backdrop {
  background: var(--primary-hover);
}

.clear-backdrop:hover {
  background: var(--primary-hoaver);
}

/* Model Controls */
.model-controls {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 280px;
  opacity: 0.75;
  background: var(--background);
  border-radius: 12px;
  padding: 16px;
  color: var(--foreground);
  z-index: 100;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
}

.controls-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid #333;
}

.control-section {
  margin-bottom: 16px;
}

.control-section h4 {
  font-size: 12px;
  text-transform: uppercase;
  color: #888;
  margin-bottom: 8px;
  letter-spacing: 0.5px;
}

.control-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.control-row label {
  width: 24px;
  font-size: 12px;
  color: #aaa;
}

.control-row input[type="number"] {
  flex: 1;
  background: var(--secondary);
  border: 1px solid #333;
  border-radius: 4px;
  padding: 8px;
  color: var(--foreground);
  font-size: 14px;
}

.control-row input[type="number"]:focus {
  outline: none;
  border-color: #e94560;
}

.control-row input[type="range"] {
  flex: 1;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--secondary);
  border-radius: 3px;
  outline: none;
}

.control-row input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  background: var(--primary);
  border-radius: 50%;
  cursor: pointer;
}

.control-row input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--primary);
  border-radius: 50%;
  cursor: pointer;
  border: none;
}

.delete-model {
  width: 100%;
  padding: 12px;
  background: var(--danger);
  color: var(--foreground);
  border: none;
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-top: 8px;
}

.delete-model:hover {
  background: var(--danger-hover);
}


/* Mobile: Show overlay when sidebar is open */
@media (max-width: 767px) {
  .sidebar-overlay {
    display: block;
  }

  .overlay-controls {
    left: 70px;
  }

  .model-controls {
    width: calc(100vw - 32px);
    max-width: 320px;
  }

  .spin-button {
    bottom: 80px;
  }
}

/* Desktop: Sidebar always visible */
@media (min-width: 768px) {
  .menu-toggle {
    display: none;
  }

  .sidebar {
    position: relative;
    width: 200px;
    min-width: 200px;
    transform: translateX(0);
    flex-shrink: 0;
  }

  .sidebar-close {
    display: none;
  }

  .sidebar-header {
    border-bottom: 1px solid #333;
  }
}