/* ===================================================================
   PixMorph Studio Pro - Canvas Studio Workspace Styling
   =================================================================== */

.studio-container {
  display: flex;
  flex: 1;
  width: 100%;
  height: calc(100vh - 56px);
  position: relative;
  overflow: hidden;
}

/* -------------------------------------------------------------------
   Left Tool Strip & Inspector Panel
   ------------------------------------------------------------------- */
.tool-dock {
  width: 64px;
  background: var(--bg-dark);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 12px 0;
  gap: 8px;
  z-index: 40;
  user-select: none;
}

.tool-btn {
  width: 44px;
  height: 44px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-md);
  background: transparent;
  color: var(--text-secondary);
  border: none;
  cursor: pointer;
  position: relative;
  transition: all var(--transition-fast);
  gap: 2px;
}

.tool-btn svg {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-fast);
}

.tool-btn span {
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.2px;
}

.tool-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.tool-btn:hover svg {
  transform: scale(1.08);
}

.tool-btn.active {
  color: #ffffff;
  background: var(--bg-surface-elevated);
  box-shadow: 0 0 0 1px var(--primary-light), 0 2px 8px var(--primary-glow);
}

.tool-btn.active::before {
  content: '';
  position: absolute;
  left: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  background: var(--primary-light);
  border-radius: 0 4px 4px 0;
}

.tool-divider {
  width: 32px;
  height: 1px;
  background: var(--border-subtle);
  margin: 4px 0;
}

/* Secondary Flyout / Inspector Panel */
.tool-flyout {
  width: 290px;
  background: var(--bg-surface);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow-y: auto;
  z-index: 30;
  box-shadow: var(--shadow-sm);
  transition: width var(--transition-normal);
}

.flyout-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flyout-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.flyout-section {
  padding: 16px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.flyout-section-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-muted);
}

/* Slider Input Control Rows */
.control-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.control-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
}

.control-val {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}

.slider-range {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 5px;
  border-radius: 999px;
  background: var(--bg-hover);
  outline: none;
}

.slider-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--primary-light);
  cursor: pointer;
  border: 2px solid #ffffff;
  box-shadow: 0 1px 4px rgba(0,0,0,0.5);
  transition: transform var(--transition-fast);
}

.slider-range::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

/* Preset Filters Grid */
.filter-presets-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.preset-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 8px 4px;
  background: var(--bg-dark);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.preset-card:hover {
  border-color: var(--border-light);
  background: var(--bg-hover);
}

.preset-card.active {
  border-color: var(--primary-light);
  background: rgba(99, 102, 241, 0.15);
}

.preset-thumb {
  width: 100%;
  height: 48px;
  border-radius: var(--border-radius-xs);
  background-size: cover;
  background-position: center;
  background-color: var(--bg-surface-elevated);
}

.preset-name {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-secondary);
}

/* Shapes & Stickers Grid */
.items-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.item-badge-btn {
  height: 48px;
  background: var(--bg-dark);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-secondary);
}

.item-badge-btn:hover {
  color: var(--text-primary);
  border-color: var(--primary-light);
  background: var(--bg-surface-elevated);
}

.item-badge-btn svg {
  width: 22px;
  height: 22px;
}

/* -------------------------------------------------------------------
   Center Viewport & Artboard Canvas Area
   ------------------------------------------------------------------- */
.viewport-container {
  flex: 1;
  height: 100%;
  position: relative;
  overflow: hidden;
  background-color: var(--bg-darkest);
  display: flex;
  flex-direction: column;
}

/* Viewport Preset Toolbar on Top */
.viewport-bar {
  height: 42px;
  background: rgba(15, 18, 25, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 20;
}

.preset-pills {
  display: flex;
  align-items: center;
  gap: 6px;
}

.preset-pill-btn {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  padding: 4px 10px;
  border-radius: var(--border-radius-pill);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.preset-pill-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
}

.preset-pill-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.canvas-dimension-info {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}

/* Interactive Canvas Stage */
.canvas-stage {
  flex: 1;
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: default;
}

.canvas-stage.panning {
  cursor: grab;
}
.canvas-stage.is-panning {
  cursor: grabbing;
}
.canvas-stage.tool-brush {
  cursor: crosshair;
}

/* Zoom/Pan Scalable Wrapper */
.canvas-artboard-wrapper {
  position: relative;
  transform-origin: center center;
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.7), 0 0 0 1px rgba(255, 255, 255, 0.1);
  transition: box-shadow var(--transition-fast);
}

/* Checkerboard Background */
.canvas-checkerboard {
  position: absolute;
  inset: 0;
  background-color: var(--checker-dark);
  background-image:
    linear-gradient(45deg, var(--checker-light) 25%, transparent 25%),
    linear-gradient(-45deg, var(--checker-light) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--checker-light) 75%),
    linear-gradient(-45deg, transparent 75%, var(--checker-light) 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
  pointer-events: none;
  z-index: 1;
}

/* The actual working HTML5 Canvas elements */
#main-canvas {
  position: relative;
  display: block;
  z-index: 2;
}

#overlay-canvas {
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 10;
}

/* Before / After Split Slider Overlay */
.split-view-container {
  position: absolute;
  inset: 0;
  z-index: 15;
  pointer-events: none;
  overflow: hidden;
  display: none;
}

.split-view-container.active {
  display: block;
}

.split-original-canvas {
  position: absolute;
  top: 0;
  left: 0;
  clip-path: polygon(0 0, 50% 0, 50% 100%, 0 100%);
}

.split-divider-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background: #ffffff;
  box-shadow: 0 0 8px rgba(0,0,0,0.8);
  pointer-events: auto;
  cursor: ew-resize;
}

.split-divider-handle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 28px;
  height: 28px;
  background: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 10px rgba(0,0,0,0.5);
  color: #111;
  font-size: 12px;
  font-weight: 700;
}

/* Bottom Viewport Status Controls */
.viewport-bottom-bar {
  height: 38px;
  background: rgba(15, 18, 25, 0.9);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 20;
}

.zoom-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.zoom-btn {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-xs);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.zoom-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.zoom-display {
  font-family: var(--font-mono);
  font-size: 11px;
  min-width: 42px;
  text-align: center;
  color: var(--text-primary);
}

/* Empty State / Upload Dropzone */
.canvas-empty-state {
  position: absolute;
  inset: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 2px dashed var(--border-light);
  border-radius: var(--border-radius-xl);
  background: rgba(23, 27, 38, 0.4);
  gap: 16px;
  z-index: 25;
  transition: all var(--transition-normal);
}

.canvas-empty-state.drag-over {
  border-color: var(--primary-light);
  background: rgba(99, 102, 241, 0.1);
  transform: scale(1.01);
}

.empty-icon-box {
  width: 68px;
  height: 68px;
  border-radius: var(--border-radius-lg);
  background: var(--grad-glass);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
}

.empty-icon-box svg {
  width: 34px;
  height: 34px;
  color: var(--primary-light);
}

.empty-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

.empty-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  max-width: 360px;
  text-align: center;
}

.samples-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}

.sample-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--border-radius-pill);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  font-size: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.sample-chip:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-light);
}

/* -------------------------------------------------------------------
   Right Dock: Layers Panel & Inspector
   ------------------------------------------------------------------- */
.right-dock {
  width: 290px;
  background: var(--bg-surface);
  border-left: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  height: 100%;
  z-index: 30;
}

.right-dock-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-dark);
}

.right-tab-btn {
  flex: 1;
  padding: 12px 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  border-bottom: 2px solid transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.right-tab-btn:hover {
  color: var(--text-primary);
}

.right-tab-btn.active {
  color: var(--text-primary);
  border-bottom-color: var(--primary-light);
  background: var(--bg-surface);
}

.right-dock-content {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

/* Layers Stack List */
.layers-header-actions {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.layers-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px;
  flex: 1;
  overflow-y: auto;
}

.layer-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--border-radius-sm);
  background: var(--bg-dark);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  user-select: none;
  transition: all var(--transition-fast);
}

.layer-item:hover {
  border-color: var(--border-light);
  background: var(--bg-surface-elevated);
}

.layer-item.active {
  border-color: var(--primary);
  background: rgba(99, 102, 241, 0.12);
  box-shadow: 0 0 0 1px rgba(99, 102, 241, 0.3);
}

.layer-thumb {
  width: 32px;
  height: 32px;
  border-radius: var(--border-radius-xs);
  background: var(--bg-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.layer-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.layer-info {
  flex: 1;
  min-width: 0;
}

.layer-name {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.layer-type {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: capitalize;
}

.layer-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.layer-action-btn {
  padding: 4px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--border-radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.layer-action-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
}

.layer-action-btn.active {
  color: var(--accent-amber);
}

/* Layer Blend & Opacity Bar */
.layer-quick-controls {
  padding: 10px 14px;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-dark);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.select-dropdown {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-light);
  color: var(--text-primary);
  padding: 6px 10px;
  border-radius: var(--border-radius-sm);
  font-size: 12px;
  outline: none;
  cursor: pointer;
}

.select-dropdown:focus {
  border-color: var(--border-focus);
}

/* History Stack Item */
.history-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--border-radius-sm);
  font-size: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.history-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.history-item.active {
  background: var(--bg-surface-elevated);
  color: var(--primary-light);
  font-weight: 500;
  border-left: 2px solid var(--primary-light);
}

/* Brush Size & Palette Swatches */
.brush-size-chip {
  flex: 1;
  padding: 5px 6px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-sm);
  color: var(--text-secondary);
  font-size: 11px;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}
.brush-size-chip:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-light);
}
.brush-size-chip.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary-light);
  font-weight: 600;
}
.swatch-btn {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 6px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}
.swatch-btn:hover {
  transform: scale(1.15);
  box-shadow: 0 2px 8px rgba(0,0,0,0.5);
}
.swatch-btn.active {
  border-color: #ffffff;
  transform: scale(1.1);
  box-shadow: 0 0 0 2px var(--primary);
}