/* Design System and Stylesheet for WireFlow */

/* CSS Reset & Variables */
:root {
  --font-family: "Segoe UI Variable", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", sans-serif;
  
  /* Fluent 2 Design System Integration */
  --bg-app: #faf9f8;             
  --bg-sidebar: rgba(255, 255, 255, 0.85); 
  --bg-canvas: #f3f2f1;           
  --border-ui: #edebe9; 
  --border-ui-focus: #0f6cbd;     
  
  --text-primary: #242424;        
  --text-secondary: #5e5e5e;      
  --text-muted: #8a8886;          
  
  --accent-color: #0f6cbd;        
  --accent-color-hover: #0c5392;  
  --accent-glow: rgba(15, 108, 189, 0.12);
  --accent-text: #ffffff;
  
  --danger-color: #d13438;        
  --danger-hover: #a80000;        
  
  --sidebar-width: 260px;
  --topbar-height: 56px;
  --panel-radius: 8px;           
  
  /* Wireframe elements default palette */
  --wf-default-fill: #ffffff;
  --wf-default-stroke: #242424;   
  --wf-selection-outline: #0f6cbd;
}

/* Light Theme Variables default fallback */
body.light-theme {
  --bg-app: #faf9f8;
  --bg-sidebar: rgba(255, 255, 255, 0.85);
  --bg-canvas: #f3f2f1;
  --border-ui: #edebe9;
  --border-ui-focus: #0f6cbd;
  
  --text-primary: #242424;
  --text-secondary: #5e5e5e;
  --text-muted: #8a8886;
  
  --accent-color: #0f6cbd;
  --accent-color-hover: #0c5392;
  --accent-glow: rgba(15, 108, 189, 0.12);
  --accent-text: #ffffff;
  
  --wf-default-fill: #ffffff;
  --wf-default-stroke: #242424;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none; /* Prevents text selection dragging globally */
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-app);
  color: var(--text-primary);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
  transition: background-color 0.25s ease;
}

/* App Container Layout */
#app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  width: 100vw;
}

/* Top bar style */
.top-bar {
  height: var(--topbar-height);
  background-color: var(--bg-sidebar);
  border-bottom: 1px solid var(--border-ui);
  backdrop-filter: blur(24px) saturate(120%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 100;
}

.logo-section {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-icon {
  color: var(--accent-color);
  filter: drop-shadow(0 0 6px var(--accent-glow));
}

.logo-text {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff 0%, #60a5fa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

body.light-theme .logo-text {
  background: linear-gradient(135deg, #242424 0%, #0f6cbd 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Dropdown Preset Select Layout */
.preset-dropdown-container {
  margin-left: 12px;
}

.preset-select {
  background-color: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-ui);
  color: var(--text-secondary);
  border-radius: 6px;
  padding: 6px 10px;
  font-family: var(--font-family);
  font-size: 12px;
  font-weight: 500;
  outline: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.preset-select:hover {
  color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.15);
}

.preset-select option {
  background-color: #090f0c;
  color: #e3e8e5;
}

body.light-theme .preset-select {
  background-color: rgba(0, 0, 0, 0.02);
}

body.light-theme .preset-select:hover {
  background-color: rgba(0, 0, 0, 0.04);
}

body.light-theme .preset-select option {
  background-color: #ffffff;
  color: #0a1410;
}

/* Toolbar Buttons */
.toolbar {
  display: flex;
  align-items: center;
  background-color: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-ui);
  border-radius: 100px;
  padding: 4px;
  gap: 2px;
}

body.light-theme .toolbar {
  background-color: rgba(0, 0, 0, 0.02);
}

.tool-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 6px 12px;
  font-family: var(--font-family);
  font-size: 12px;
  font-weight: 500;
  border-radius: 100px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.tool-btn:hover {
  color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.04);
}

body.light-theme .tool-btn:hover {
  background-color: rgba(0, 0, 0, 0.04);
}

.tool-btn.active {
  color: var(--accent-text);
  font-weight: 600;
  background-color: var(--accent-color);
  box-shadow: 0 4px 12px var(--accent-glow);
}

.toolbar-divider {
  width: 1px;
  height: 20px;
  background-color: var(--border-ui);
  margin: 0 4px;
}

/* Actions in Header */
.actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.action-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  width: 32px;
  height: 32px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

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

body.light-theme .action-btn:hover {
  background-color: rgba(0, 0, 0, 0.04);
}

.btn {
  border: none;
  font-family: var(--font-family);
  font-size: 12px;
  font-weight: 600;
  height: 32px;
  padding: 0 14px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn.primary {
  background-color: var(--accent-color);
  color: var(--accent-text);
}

.btn.primary:hover {
  background-color: var(--accent-color-hover);
  box-shadow: 0 4px 12px var(--accent-glow);
}

.btn.secondary {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-ui);
  color: var(--text-primary);
}

.btn.secondary:hover {
  background-color: rgba(255, 255, 255, 0.08);
}

body.light-theme .btn.secondary {
  background-color: rgba(0, 0, 0, 0.02);
  color: var(--text-primary);
}

body.light-theme .btn.secondary:hover {
  background-color: rgba(0, 0, 0, 0.05);
}

/* Export Dropdown */
.export-dropdown-container {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background-color: var(--bg-sidebar);
  backdrop-filter: blur(24px) saturate(120%);
  border: 1px solid var(--border-ui);
  border-radius: 8px;
  padding: 6px;
  display: none;
  flex-direction: column;
  width: 170px;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
  z-index: 200;
}

body.light-theme .dropdown-menu {
  background-color: #ffffff;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
}

.dropdown-menu.show {
  display: flex;
  animation: slideDown 0.15s ease;
}

.dropdown-menu button {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-family);
  font-size: 12px;
  padding: 8px 10px;
  text-align: left;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.15s ease;
}

.dropdown-menu button:hover {
  background-color: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
}

body.light-theme .dropdown-menu button:hover {
  background-color: rgba(0, 0, 0, 0.04);
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Layout Containers */
.main-layout {
  display: flex;
  flex: 1;
  overflow: hidden;
  position: relative;
}

/* Sidebar Elements (Left/Right) */
.sidebar-left, .sidebar-right {
  width: var(--sidebar-width);
  background-color: var(--bg-sidebar);
  backdrop-filter: blur(24px) saturate(120%);
  border-right: 1px solid var(--border-ui);
  display: flex;
  flex-direction: column;
  z-index: 10;
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.sidebar-right {
  border-right: none;
  border-left: 1px solid var(--border-ui);
}

.sidebar-header {
  height: 48px;
  padding: 0 16px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border-ui);
}

.sidebar-header h3 {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

/* Layer List Panel */
.layer-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

.empty-state {
  color: var(--text-muted);
  font-size: 12px;
  text-align: center;
  padding: 24px 8px;
}

.layer-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px;
  border-radius: 6px;
  cursor: pointer;
  margin-bottom: 2px;
  transition: all 0.15s ease;
  font-size: 12px;
  color: var(--text-secondary);
}

.layer-item:hover {
  background-color: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
}

body.light-theme .layer-item:hover {
  background-color: rgba(0, 0, 0, 0.02);
}

.layer-item.selected {
  background-color: var(--accent-glow);
  border: 1px solid rgba(73, 145, 112, 0.25);
  color: var(--accent-color);
}

body.light-theme .layer-item.selected {
  background-color: var(--accent-glow);
  border-color: rgba(30, 66, 49, 0.2);
  color: var(--accent-color-hover);
}

.layer-item.grouped {
  padding-left: 22px;
  border-left: 2px solid var(--border-ui);
  margin-left: 6px;
}

.layer-item svg {
  opacity: 0.7;
  color: var(--accent-color);
}

/* Shortcuts list inside left sidebar */
.hotkeys-guide {
  padding: 16px;
  border-top: 1px solid var(--border-ui);
  background-color: rgba(0, 0, 0, 0.1);
}

body.light-theme .hotkeys-guide {
  background-color: rgba(0, 0, 0, 0.01);
}

.hotkeys-guide h4 {
  font-size: 11px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.hotkey-row {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-secondary);
  margin-bottom: 6px;
  align-items: center;
}

.hotkey-row span.key {
  background-color: rgba(255, 255, 255, 0.06);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border-ui);
  color: var(--text-primary);
  font-family: monospace;
}

body.light-theme .hotkey-row span.key {
  background-color: #ffffff;
}

/* Central Viewport & Infinite Canvas Grid */
.canvas-viewport {
  flex: 1;
  background-color: var(--bg-canvas);
  overflow: hidden;
  position: relative;
  outline: none;
  cursor: grab;
  transition: background-color 0.25s ease;
}

.canvas-viewport:active {
  cursor: grabbing;
}

/* Panning translation container */
.canvas-content {
  position: absolute;
  top: 0;
  left: 0;
  width: 5000px; /* Infinite feel size */
  height: 5000px;
  transform-origin: 0 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1.5px, transparent 1.5px);
  background-size: 24px 24px;
  pointer-events: none;
}

body.light-theme .canvas-content {
  background-image: radial-gradient(rgba(15, 23, 42, 0.06) 1.5px, transparent 1.5px);
}

/* Artboard Device Canvas frames */
.canvas-frame {
  position: absolute;
  top: 1000px;
  left: 1000px;
  background-color: #ffffff;
  border: 1px solid var(--border-ui);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.4);
  border-radius: 4px;
  pointer-events: none;
  z-index: 1;
  transition: border-radius 0.2s ease, width 0.25s cubic-bezier(0.4, 0, 0.2, 1), height 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

body.light-theme .canvas-frame {
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.08);
}

.canvas-frame-header {
  position: absolute;
  bottom: 100%;
  left: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 0px;
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 600;
}

.device-dims {
  color: var(--text-muted);
  font-weight: 400;
}

/* Wireframe Elements container */
.canvas-elements {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: auto; /* Re-enable pointer events for elements inside */
  z-index: 5;
}

/* Wireframe elements style sheets */
.wf-element {
  position: absolute;
  box-sizing: border-box;
  cursor: move;
  transform-origin: 0 0;
  user-select: none;
}

/* Image Element placeholder */
.wf-element.image {
  background-image: linear-gradient(135deg, transparent 49%, rgba(148, 163, 184, 0.2) 49%, rgba(148, 163, 184, 0.2) 51%, transparent 51%),
                    linear-gradient(45deg, transparent 49%, rgba(148, 163, 184, 0.2) 49%, rgba(148, 163, 184, 0.2) 51%, transparent 51%);
  background-size: 100% 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Mountain image icon in center of image elements */
.wf-element.image::after {
  content: '';
  width: 24px;
  height: 24px;
  border: 2px solid var(--text-muted);
  border-radius: 4px;
  background: radial-gradient(circle at 7px 7px, var(--text-muted) 2px, transparent 2px);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  position: absolute;
  opacity: 0.7;
}

/* Button wireframe elements */
.wf-element.button {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-family);
  font-weight: 500;
  text-align: center;
  padding: 4px 12px;
}

/* Text wireframe elements */
.wf-element.text {
  background: transparent !important;
  border: 1px solid transparent !important;
  overflow-wrap: break-word;
  word-break: break-word;
  white-space: pre-wrap;
  font-family: var(--font-family);
  cursor: text;
}

.wf-element.text:hover {
  border-color: rgba(99, 102, 241, 0.3) !important;
}

/* Text Element Inline Editor Style */
.wf-text-editor-active {
  outline: none;
  cursor: text;
  background-color: rgba(255, 255, 255, 0.1) !important;
  border: 1.5px solid var(--accent-color) !important;
  user-select: text !important;
  min-width: 40px;
  min-height: 20px;
}

body.light-theme .wf-text-editor-active {
  background-color: rgba(0, 0, 0, 0.05) !important;
}

/* Zoom Level HUD */
.zoom-hud {
  position: absolute;
  bottom: 16px;
  right: 16px;
  background-color: var(--bg-sidebar);
  backdrop-filter: blur(24px) saturate(120%);
  border: 1px solid var(--border-ui);
  border-radius: 100px;
  padding: 4px;
  display: flex;
  align-items: center;
  gap: 2px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
  z-index: 90;
  transition: all 0.2s ease;
}

body.light-theme .zoom-hud {
  background-color: rgba(255, 255, 255, 0.85);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

/* Interactive Canvas Selection Box and resize overlays */
.canvas-overlay-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 10;
}

.selection-box {
  position: absolute;
  border: 1.5px solid var(--wf-selection-outline);
  box-sizing: border-box;
  pointer-events: none;
}

/* Resize Handles (8 directions) */
.resize-handle {
  position: absolute;
  width: 8px;
  height: 8px;
  background-color: #ffffff;
  border: 1.5px solid var(--wf-selection-outline);
  border-radius: 1px;
  pointer-events: auto;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.handle-nw { top: -5px; left: -5px; cursor: nwse-resize; }
.handle-n  { top: -5px; left: calc(50% - 4px); cursor: ns-resize; }
.handle-ne { top: -5px; right: -5px; cursor: nesw-resize; }
.handle-e  { top: calc(50% - 4px); right: -5px; cursor: ew-resize; }
.handle-se { bottom: -5px; right: -5px; cursor: nwse-resize; }
.handle-s  { bottom: -5px; left: calc(50% - 4px); cursor: ns-resize; }
.handle-sw { bottom: -5px; left: -5px; cursor: nesw-resize; }
.handle-w  { top: calc(50% - 4px); left: -5px; cursor: ew-resize; }

/* Interactive Figma-style Corner Rounding Circle Handle */
.corner-radius-handle {
  position: absolute;
  width: 10px;
  height: 10px;
  background-color: #ffffff;
  border: 1.5px solid var(--wf-selection-outline);
  border-radius: 50%;
  pointer-events: auto;
  cursor: nwse-resize;
  box-shadow: 0 1px 3px rgba(0,0,0,0.35);
  display: flex;
  align-items: center;
  justify-content: center;
}

.corner-radius-handle::after {
  content: '';
  width: 4px;
  height: 4px;
  border-top: 1px solid var(--wf-selection-outline);
  border-left: 1px solid var(--wf-selection-outline);
  position: absolute;
  top: 1px;
  left: 1px;
}

/* Drawing & Multi-select Preview Box */
.drawing-preview {
  position: absolute;
  border: 1.5px dashed var(--accent-color);
  background-color: rgba(99, 102, 241, 0.05);
  pointer-events: none;
}

.multi-select-preview {
  position: absolute;
  border: 1px solid var(--accent-color);
  background-color: rgba(99, 102, 241, 0.08);
  pointer-events: none;
  z-index: 100;
}

/* Inspector / Properties Panel Styling */
.inspector-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 12px;
  gap: 12px;
  flex: 1;
}

.inspector-panel {
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  flex: 1;
}

.inspector-section {
  padding: 16px;
  border-bottom: 1px solid var(--border-ui);
}

.section-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}

/* Inspector grid styling */
.grid-2x2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.property-input-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.property-input-group label {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 500;
}

.property-input-group input[type="number"],
.property-input-group input[type="text"],
.property-input-group textarea {
  background-color: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-ui);
  border-radius: 6px;
  padding: 6px 8px;
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 12px;
  outline: none;
  transition: all 0.15s ease;
}

body.light-theme .property-input-group input[type="number"],
body.light-theme .property-input-group input[type="text"],
body.light-theme .property-input-group textarea {
  background-color: #ffffff;
}

.property-input-group input:focus,
.property-input-group textarea:focus {
  border-color: var(--border-ui-focus);
  box-shadow: 0 0 0 2px var(--accent-glow);
}

/* Custom Color Picker layout */
.color-picker-wrapper {
  display: flex;
  gap: 8px;
  align-items: center;
}

.color-picker-wrapper input[type="color"] {
  -webkit-appearance: none;
  border: 1px solid var(--border-ui);
  width: 28px;
  height: 28px;
  border-radius: 6px;
  cursor: pointer;
  background: none;
  padding: 0;
}

.color-picker-wrapper input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 0;
}

.color-picker-wrapper input[type="color"]::-webkit-color-swatch {
  border: none;
  border-radius: 5px;
}

.hex-input {
  flex: 1;
  text-transform: uppercase;
}

/* Preset dots grid */
.color-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.preset-dot {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  cursor: pointer;
  transition: transform 0.1s ease;
}

body.light-theme .preset-dot {
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.preset-dot:hover {
  transform: scale(1.15);
}

/* Sliders range overrides */
input[type="range"] {
  -webkit-appearance: none;
  height: 4px;
  border-radius: 2px;
  background-color: rgba(255, 255, 255, 0.1);
  outline: none;
  cursor: pointer;
  margin: 10px 0;
}

body.light-theme input[type="range"] {
  background-color: rgba(0, 0, 0, 0.08);
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: #ffffff;
  border: 1.5px solid var(--accent-color);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  transition: transform 0.1s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.value-display {
  font-size: 11px;
  color: var(--text-secondary);
  font-family: monospace;
}

/* Align buttons */
.align-btn-group {
  display: flex;
  background-color: rgba(0,0,0,0.25);
  border: 1px solid var(--border-ui);
  border-radius: 6px;
  padding: 2px;
  width: fit-content;
}

body.light-theme .align-btn-group {
  background-color: #ffffff;
}

.align-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  width: 26px;
  height: 24px;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

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

.align-btn.active {
  background-color: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

body.light-theme .align-btn.active {
  background-color: rgba(0, 0, 0, 0.05);
  color: var(--text-primary);
}

/* Inspector arrangement action buttons */
.actions-section {
  border-bottom: none;
  margin-top: auto;
}

.action-btn-secondary, .action-btn-danger {
  border: 1px solid var(--border-ui);
  background-color: rgba(255, 255, 255, 0.02);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 12px;
  font-weight: 500;
  padding: 8px 10px;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all 0.15s ease;
}

body.light-theme .action-btn-secondary {
  background-color: #ffffff;
}

.action-btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.06);
}

body.light-theme .action-btn-secondary:hover {
  background-color: rgba(0, 0, 0, 0.02);
}

.action-btn-danger {
  color: #fca5a5;
  border-color: rgba(239, 68, 68, 0.2);
}

body.light-theme .action-btn-danger {
  color: var(--danger-color);
  border-color: rgba(239, 68, 68, 0.15);
  background-color: #ffffff;
}

.action-btn-danger:hover {
  background-color: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.4);
  color: #ffffff;
}

body.light-theme .action-btn-danger:hover {
  background-color: rgba(239, 68, 68, 0.06);
  color: var(--danger-color);
}

/* Scrollbars styling */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
}

body.light-theme ::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.1);
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

body.light-theme ::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.15);
}

/* Generic Flex/Grid Helper utilities */
.flex-row { display: flex; align-items: center; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }
.gap-8 { gap: 8px; }
.mb-8 { margin-bottom: 8px; }
.mt-8 { margin-top: 8px; }
.flex-1 { flex: 1; }

/* Pages list panel styling */
.pages-list {
  max-height: 180px;
  overflow-y: auto;
  padding: 8px;
}

.sidebar-divider {
  height: 1px;
  background-color: var(--border-ui);
  margin: 4px 8px;
}

.page-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 8px;
  border-radius: 6px;
  cursor: pointer;
  margin-bottom: 2px;
  font-size: 12px;
  color: var(--text-secondary);
  position: relative;
  transition: all 0.15s ease;
}

.page-item:hover {
  background-color: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
}

body.light-theme .page-item:hover {
  background-color: rgba(0, 0, 0, 0.02);
}

.page-item.selected {
  background-color: var(--accent-glow);
  border: 1px solid rgba(73, 145, 112, 0.25);
  color: var(--text-primary);
}

body.light-theme .page-item.selected {
  background-color: var(--accent-glow);
  border-color: rgba(30, 66, 49, 0.2);
  color: var(--accent-color-hover);
}

.page-item-label {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.page-rename-input {
  background-color: rgba(0, 0, 0, 0.35) !important;
  border: 1.5px solid var(--accent-color) !important;
  border-radius: 4px;
  padding: 2px 4px !important;
  color: #ffffff !important;
  font-family: var(--font-family);
  font-size: 11px;
  width: 100%;
  outline: none;
}

body.light-theme .page-rename-input {
  background-color: #ffffff !important;
  color: var(--text-primary) !important;
}

.page-delete-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  opacity: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.15s ease, color 0.15s ease;
  width: 18px;
  height: 18px;
  border-radius: 4px;
}

.page-item:hover .page-delete-btn {
  opacity: 1;
}

.page-delete-btn:hover {
  color: var(--danger-color);
  background-color: rgba(239, 68, 68, 0.1);
}

/* Premium micro-interactions & feedback */
.btn:active, .tool-btn:active, .action-btn:active, .page-item:active, .layer-item:active {
  transform: scale(0.96);
}

.preset-dot:active {
  transform: scale(0.9);
}

/* Editor Settings card in left sidebar */
.editor-settings {
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.editor-settings h4 {
  font-size: 11px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
  letter-spacing: 0.05em;
}

.settings-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: var(--text-secondary);
}

.settings-row label {
  cursor: pointer;
}

.settings-row input[type="checkbox"] {
  accent-color: var(--accent-color);
  cursor: pointer;
  width: 14px;
  height: 14px;
}

.settings-select {
  background-color: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-ui);
  color: var(--text-secondary);
  border-radius: 4px;
  padding: 2px 6px;
  font-family: var(--font-family);
  font-size: 10px;
  outline: none;
  cursor: pointer;
}

body.light-theme .settings-select {
  background-color: rgba(0, 0, 0, 0.02);
}

/* Alignment Grid in Inspector */
.align-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
}

.align-control-btn {
  background-color: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-ui);
  color: var(--text-secondary);
  height: 28px;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.align-control-btn:hover {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.15);
}

.align-control-btn:active {
  transform: scale(0.92);
}

body.light-theme .align-control-btn {
  background-color: rgba(0, 0, 0, 0.02);
}
body.light-theme .align-control-btn:hover {
  background-color: rgba(0, 0, 0, 0.04);
}

/* Smart Snapping Guides */
.smart-guide-line {
  position: absolute;
  border: 0px dashed #ef4444; /* Dotted red guidelines */
  pointer-events: none;
  z-index: 50;
}

.smart-guide-line.v {
  width: 0;
  border-left-width: 1px;
}

.smart-guide-line.h {
  height: 0;
  border-top-width: 1px;
}

/* Measure elements styling */
.wf-element.measure-circle {
  border-style: dashed !important;
  background-color: var(--accent-glow) !important;
}

.wf-element.measure-rect {
  border-style: dashed !important;
  background-color: var(--accent-glow) !important;
}

/* Measurement markup sub-elements inside shape div */
.measure-center-dot {
  position: absolute;
  width: 4px;
  height: 4px;
  background-color: var(--accent-color);
  border-radius: 50%;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.measure-radius-line {
  position: absolute;
  height: 0;
  border-top: 1px dashed var(--accent-color);
  opacity: 0.7;
  left: 50%;
  top: 50%;
  width: 50%;
  transform-origin: left center;
  pointer-events: none;
}

.measure-label-bubble {
  position: absolute;
  font-size: 9px;
  font-weight: 600;
  color: var(--accent-color);
  background-color: var(--bg-app);
  border: 1px solid var(--border-ui);
  padding: 1px 4px;
  border-radius: 3px;
  font-family: monospace;
  pointer-events: none;
  white-space: nowrap;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

/* Measure Readouts in Inspector */
.measure-readout-container {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.measure-readout-row {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.02);
  padding-bottom: 4px;
}

body.light-theme .measure-readout-row {
  border-bottom-color: rgba(0, 0, 0, 0.02);
}

.measure-readout-label {
  color: var(--text-muted);
}

.measure-readout-val {
  color: var(--text-primary);
  font-family: monospace;
  font-weight: 600;
}

/* Sidebar toggle buttons (topbar) */
#btn-toggle-left-sidebar, #btn-toggle-right-sidebar {
  margin: 0 4px;
}

/* Sidebar collapse animations */
.sidebar-left, .sidebar-right {
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
              opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1), 
              border-color 0.25s ease, 
              background-color 0.25s ease;
}

.sidebar-left.collapsed {
  width: 0 !important;
  opacity: 0 !important;
  pointer-events: none !important;
  overflow: hidden !important;
  border-right: 0px solid transparent !important;
}

.sidebar-right.collapsed {
  width: 0 !important;
  opacity: 0 !important;
  pointer-events: none !important;
  overflow: hidden !important;
  border-left: 0px solid transparent !important;
}

/* Zoom HUD Buttons and Readout */
.zoom-hud-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  width: 26px;
  height: 26px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

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

body.light-theme .zoom-hud-btn:hover {
  background-color: rgba(0, 0, 0, 0.03);
}

.zoom-hud-btn:active {
  transform: scale(0.9);
}

.zoom-readout {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-primary);
  padding: 0 6px;
  min-width: 44px;
  text-align: center;
  cursor: pointer;
  font-family: monospace;
}

.zoom-readout:hover {
  color: var(--accent-color);
}

/* Credit Footer styling */
#credit-footer {
  height: 25px;
  background-color: var(--bg-sidebar);
  border-top: 1px solid var(--border-ui);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  z-index: 100;
}

/* Page Duplicate button */
.page-duplicate-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  opacity: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.15s ease, color 0.15s ease;
  width: 18px;
  height: 18px;
  border-radius: 4px;
  margin-right: 4px;
}

.page-item:hover .page-duplicate-btn {
  opacity: 1;
}

.page-duplicate-btn:hover {
  color: var(--accent-color);
  background-color: var(--accent-glow);
}

/* Grid layout labels & styling */
.sub-label {
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-top: 4px;
  margin-bottom: 2px;
  display: block;
}

.measure-grid-col {
  background-color: var(--accent-glow);
  border-left: 1px dashed rgba(73, 145, 112, 0.25);
  border-right: 1px dashed rgba(73, 145, 112, 0.25);
  pointer-events: none;
  box-sizing: border-box;
}

body.light-theme .measure-grid-col {
  border-left-color: rgba(30, 66, 49, 0.25);
  border-right-color: rgba(30, 66, 49, 0.25);
}

.measure-grid-row {
  background-color: var(--accent-glow);
  border-top: 1px dashed rgba(73, 145, 112, 0.25);
  border-bottom: 1px dashed rgba(73, 145, 112, 0.25);
  pointer-events: none;
  box-sizing: border-box;
}

body.light-theme .measure-grid-row {
  border-top-color: rgba(30, 66, 49, 0.25);
  border-bottom-color: rgba(30, 66, 49, 0.25);
}

/* Mobile Overlay */
.mobile-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-app);
  z-index: 999999;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 24px;
}

.mobile-overlay-content {
  max-width: 400px;
}

.mobile-overlay h2 {
  font-size: 24px;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.mobile-overlay p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.5;
}

@media (max-width: 768px) {
  .mobile-overlay {
    display: flex;
  }
  #app-container {
    display: none !important;
  }
}