/* Editor Main Workspace */
.editor-workspace {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 32px;
  display: flex;
  flex-direction: column;
  height: calc(100vh - 100px);
  position: relative;
  z-index: 10;
}

/* Floating Top Control Bar */
.editor-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--color-border-card);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-pill);
  margin-bottom: 16px;
}

.editor-asset-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.editor-file-name {
  font-weight: 600;
  font-size: 14px;
  color: var(--color-text-primary);
  max-width: 220px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.editor-badge {
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  background: var(--color-surface-low);
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.editor-top-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Canvas Viewport */
.canvas-container {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface-pure);
  border: 1px solid var(--color-border-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  min-height: 380px;
}

/* High Contrast Checkerboard Pattern for Alpha Preview */
.checkerboard-bg {
  background-color: #FFFFFF;
  background-image: linear-gradient(45deg, #E5E7EB 25%, transparent 25%),
                    linear-gradient(-45deg, #E5E7EB 25%, transparent 25%),
                    linear-gradient(45deg, transparent 75%, #E5E7EB 75%),
                    linear-gradient(-45deg, transparent 75%, #E5E7EB 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

.canvas-stage {
  position: relative;
  max-width: 100%;
  max-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

canvas#main-canvas {
  display: block;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  cursor: crosshair;
  user-select: none;
}

/* Split Comparison Slider Overlay */
.comparison-container {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.comparison-slider-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--color-surface-pure);
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.4);
  pointer-events: auto;
  cursor: ew-resize;
  z-index: 20;
}

.slider-thumb-pill {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 32px;
  height: 32px;
  background-color: var(--color-surface-pure);
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-card);
}

/* Floating Bottom Toolbar */
.floating-editor-toolbar {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 8px 18px;
  background: var(--glass-bg-elevated);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--color-border-card);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-dropdown);
  max-width: calc(100% - 32px);
  overflow-x: auto;
}

.tool-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.toolbar-divider {
  width: 1px;
  height: 24px;
  background-color: var(--color-border-subtle);
}

.tool-button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: var(--transition-fast);
}

.tool-button:hover {
  background-color: var(--color-surface-low);
  color: var(--color-text-primary);
}

.tool-button.active {
  background-color: var(--color-interactive-dark);
  color: var(--color-text-inverted);
}

.brush-size-control {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 4px;
}

.brush-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 80px;
  height: 4px;
  background: var(--color-surface-dim);
  border-radius: 2px;
  outline: none;
}

.brush-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-interactive-dark);
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

/* Background Color Chips */
.bg-chip-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.bg-chip {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--color-border-card);
  cursor: pointer;
  transition: var(--transition-fast);
  position: relative;
}

.bg-chip:hover {
  transform: scale(1.15);
}

.bg-chip.active {
  border-color: var(--color-accent-crimson);
  box-shadow: 0 0 0 2px var(--color-accent-crimson-glow);
  transform: scale(1.15);
}

.bg-chip-transparent {
  background-image: linear-gradient(45deg, #ccc 25%, transparent 25%),
                    linear-gradient(-45deg, #ccc 25%, transparent 25%),
                    linear-gradient(45deg, transparent 75%, #ccc 75%),
                    linear-gradient(-45deg, transparent 75%, #ccc 75%);
  background-size: 8px 8px;
}

@media (max-width: 768px) {
  .editor-workspace {
    height: auto;
    min-height: calc(100vh - 80px);
  }
  .canvas-container {
    height: 450px;
    margin-bottom: 70px;
  }
  .floating-editor-toolbar {
    bottom: 12px;
    padding: 6px 12px;
    gap: 8px;
  }
}