:root {
  --bg-color: #2d2d2d;
  --text-color: #333;
  --sidebar-bg: #2d2d2d;
  --sidebar-text: #ffffff;
  --sidebar-border: rgba(255, 255, 255, 0.1);
  --layer-bg: #3d3d3d;
  --layer-hover: #4d4d4d;
  --layer-text: #ffffff;
  --layer-icon: #888;
  --layer-icon-hover: #fff;
  --range-track: #4d4d4d;
  --range-thumb: #888;
  --range-thumb-hover: #fff;
  --floating-button-bg: rgba(45, 45, 45, 0.8);
  --floating-button-border: rgba(255, 255, 255, 0.2);
  --floating-button-hover-bg: rgba(60, 60, 60, 0.9);
  --floating-button-hover-border: rgba(255, 255, 255, 0.4);
  --floating-button-icon: #ffffff;
  --toast-bg: rgba(45, 45, 45, 0.9);
  --toast-text: #ffffff;
  --layer-color-border: #4d4d4d;
}

.light-theme {
  --bg-color: #f5f5f5;
  --text-color: #333;
  --sidebar-bg: #f5f5f5;
  --sidebar-text: #333;
  --sidebar-border: rgba(0, 0, 0, 0.1);
  --layer-bg: #e0e0e0;
  --layer-hover: #d0d0d0;
  --layer-text: #333;
  --layer-icon: #666;
  --layer-icon-hover: #333;
  --range-track: #d0d0d0;
  --range-thumb: #666;
  --range-thumb-hover: #333;
  --floating-button-bg: rgba(255, 255, 255, 0.8);
  --floating-button-border: rgba(0, 0, 0, 0.2);
  --floating-button-hover-bg: rgba(240, 240, 240, 0.9);
  --floating-button-hover-border: rgba(0, 0, 0, 0.4);
  --floating-button-icon: #333;
  --toast-bg: rgba(33, 37, 41, 0.9);
  --toast-text: #ffffff;
  --layer-color-border: #d0d0d0;
}

body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
}

.home-page-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: var(--bg-color);
}

.tile-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  gap: 1rem;
  padding: 2rem;
  margin: 0;
  box-sizing: border-box;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

.tile {
  width: 100%;
  max-width: 400px;
  padding: 1.5rem;
  background-color: white;
  border-radius: 12px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  color: #333;
}

.tile:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.tile i {
  font-size: 1.5rem;
  color: #333;
}

.tile-text {
  font-size: 1.25rem;
  font-weight: 500;
}

.github-tile {
  background-color: #24292e;
  color: white;
}

.github-tile i {
  color: white;
}

.drop-tile {
  border: 2px dashed #666;
  background-color: transparent;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: background-color 0.3s ease;
}

.drop-tile:hover {
  border-color: #333;
  background-color: rgba(255, 255, 255, 0.5);
}

.drop-valid {
  background-color: rgba(40, 167, 69, 0.2) !important;
  border-color: #28a745 !important;
}

.drop-invalid {
  background-color: rgba(220, 53, 69, 0.2) !important;
  border-color: #dc3545 !important;
}

.viewer-container {
  position: fixed;
  top: 0;
  left: 0;
  width: calc(100vw - 260px - 1px - 16px - 16px);
  height: 100vh;
  overflow: hidden;
  background-color: var(--bg-color);
}

.viewer-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.floating-buttons {
  position: fixed;
  top: 1rem;
  left: 1rem;
  display: flex;
  gap: 0.75rem;
  z-index: 100;
}

.floating-button {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background-color: var(--floating-button-bg);
  border: 2px solid var(--floating-button-border);
  color: var(--text-color);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  text-decoration: none;
  backdrop-filter: blur(4px);
  transition: all 0.2s ease;
}

.floating-button:hover {
  background-color: var(--floating-button-hover-bg);
  border-color: var(--floating-button-hover-border);
  transform: translateY(-2px);
}

.floating-button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.floating-button:disabled:hover {
  background-color: var(--floating-button-bg);
  border-color: var(--floating-button-border);
  transform: none;
}

.floating-button i {
  font-size: 1.25rem;
  color: var(--floating-button-icon);
}

.status-text {
  color: var(--sidebar-text);
  background: none;
  padding: 8px 16px;
  border-radius: 4px;
  margin-left: 16px;
  font-size: 14px;
  white-space: nowrap;
}

.toast-container {
  position: fixed;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
}

.toast {
  background-color: var(--toast-bg);
  color: var(--toast-text);
  padding: 0.75rem 1.5rem;
  border-radius: 4px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(4px);
  animation: slideUp 0.3s ease-out;
  max-width: 300px;
  text-align: center;
}

@keyframes slideUp {
  from {
    transform: translateY(100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes slideOut {
  from {
    transform: translateY(0);
    opacity: 1;
  }
  to {
    transform: translateY(100%);
    opacity: 0;
  }
}

.sidebar {
  position: fixed;
  right: 0;
  top: 0;
  bottom: 0;
  width: 260px;
  background-color: var(--sidebar-bg);
  color: var(--sidebar-text);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  border-left: 1px solid var(--sidebar-border);
}

.sidebar-header {
  display: flex;
  gap: 0.5rem;
}

.sidebar-header button {
  flex: 1;
  padding: 0.5rem;
  background-color: var(--layer-bg);
  border: none;
  border-radius: 4px;
  color: var(--layer-text);
  cursor: pointer;
  transition: background-color 0.2s;
}

.sidebar-header button:hover {
  background-color: var(--layer-hover);
}

.layer-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  overflow-y: auto;
}

.layer-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.2s ease;
  background-color: var(--layer-bg);
}

.layer-item:hover {
  background-color: var(--layer-hover) !important;
}

.layer-item i {
  width: 20px;
  text-align: center;
  color: var(--layer-icon);
  transition: color 0.2s ease;
}

.layer-item:hover i {
  color: var(--layer-icon-hover);
}

.layer-color {
  position: absolute;
  top: 0;
  left: 0;
  width: 20px;
  height: 20px;
  border-radius: 4px;
  border: 1px solid var(--layer-color-border);
  cursor: pointer;
}

.layer-index {
  flex: 1;
  user-select: none;
}

.layer-item input[type="range"] {
  width: 100px;
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
}

.layer-item input[type="range"]::-webkit-slider-runnable-track {
  width: 100%;
  height: 4px;
  background: var(--range-track);
  border-radius: 2px;
}

.layer-item input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 8px;
  height: 16px;
  background: var(--range-thumb);
  border-radius: 2px;
  cursor: pointer;
  margin-top: -6px;
  transition: background-color 0.2s ease;
}

.layer-item input[type="range"]::-moz-range-track {
  width: 100%;
  height: 4px;
  background: var(--range-track);
  border-radius: 2px;
  border: none;
}

.layer-item input[type="range"]::-moz-range-thumb {
  width: 8px;
  height: 16px;
  background: var(--range-thumb);
  border-radius: 2px;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.layer-item input[type="range"]:hover::-webkit-slider-thumb {
  background: var(--range-thumb-hover);
}

.layer-item input[type="range"]:hover::-moz-range-thumb {
  background: var(--range-thumb-hover);
}

.color-picker-container {
  position: relative;
  width: 20px;
  height: 20px;
}

.color-picker {
  position: absolute;
  top: 0;
  left: 0;
  width: 20px;
  height: 20px;
  opacity: 0;
  cursor: pointer;
}

.color-picker::-webkit-color-swatch-wrapper {
  padding: 0;
}

.color-picker::-webkit-color-swatch {
  border: none;
  border-radius: 4px;
}

.color-picker::-moz-color-swatch {
  border: none;
  border-radius: 4px;
}

@media (max-width: 768px) {
  .viewer-container {
    width: 100vw;
  }

  .sidebar {
    display: none;
  }
}