/* ==========================================================================
   DESIGN TOKENS (Defined in PROJECT.md)
   ========================================================================== */
:root {
  /* Spacing Tokens */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;

  /* Color Tokens */
  --color-bg-primary: hsl(220, 15%, 10%);     /* Deep space dark background */
  --color-bg-secondary: hsl(220, 15%, 16%);   /* Panel card dark background */
  --color-text-primary: hsl(220, 10%, 95%);   /* Crisp off-white text */
  --color-text-secondary: hsl(220, 10%, 70%); /* Muted slate text for labels */
  --color-accent: hsl(210, 100%, 50%);        /* Electric blue accent for inspection */
  --color-violet: hsl(270, 80%, 60%);         /* Deep violet accent for canvas bounding boxes */

  /* Border & Radius Tokens */
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;

  /* Glassmorphic border */
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: rgba(0, 0, 0, 0.35);
}

/* ==========================================================================
   GLOBAL STYLES & RESET
   ========================================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  line-height: 1.5;
}

/* ==========================================================================
   HEADER / TOOLBAR
   ========================================================================== */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--glass-border);
  z-index: 100;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.header-logo h1 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.header-logo .badge {
  font-size: 0.7rem;
  background-color: var(--color-accent);
  color: #fff;
  padding: 2px 6px;
  border-radius: var(--border-radius-sm);
  text-transform: uppercase;
  font-weight: 800;
  letter-spacing: 0.05em;
}

.logo-icon {
  font-size: 1.3rem;
  animation: pulse-glow 3s infinite ease-in-out;
}

.toolbar-modes {
  display: flex;
  gap: var(--spacing-md);
}

.toolbar-btn {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  color: var(--color-text-primary);
  padding: 8px var(--spacing-md);
  border-radius: var(--border-radius-md);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.toolbar-btn:hover:not(:disabled) {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

.toolbar-btn.active {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
  box-shadow: 0 0 12px rgba(0, 149, 255, 0.4);
}

.toolbar-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #10b981; /* green */
}

.status-indicator.active {
  box-shadow: 0 0 8px #10b981;
}

/* ==========================================================================
   SPLIT LAYOUT
   ========================================================================== */
.app-layout {
  display: grid;
  grid-template-columns: 1fr 400px;
  flex: 1;
  overflow: hidden;
}

/* ==========================================================================
   LEFT COLUMN: DOM MOCK CONTAINER
   ========================================================================== */
.mock-page-container {
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg-primary);
  overflow-y: auto;
  border-right: 1px solid var(--glass-border);
  padding: var(--spacing-lg);
  gap: var(--spacing-md);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-xs) 0;
}

.panel-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.viewport-controls .size-pill {
  font-size: 0.75rem;
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  padding: 4px 10px;
  border-radius: 20px;
  color: var(--color-text-secondary);
}

/* ==========================================================================
   DOM MOCK PAGE CONTENT
   ========================================================================== */
#mock-page {
  position: relative;
  background-color: hsl(222, 25%, 6%);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--glass-border);
  padding: var(--spacing-xl);
  min-height: 100%;
  display: flex;
  flex-direction: column;
  gap: 40px;
  box-shadow: inset 0 0 30px rgba(0, 0, 0, 0.5);
  transition: all 0.2s ease;
}

/* Mock Elements Navigation */
.mock-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.mock-logo {
  font-weight: 800;
  font-size: 1.1rem;
  color: #fff;
  letter-spacing: -0.01em;
}

.mock-nav-links {
  display: flex;
  gap: var(--spacing-md);
}

.mock-nav-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: color 0.2s;
}

.mock-nav-links a:hover {
  color: #fff;
}

/* Mock Hero */
.mock-hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  max-width: 600px;
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.mock-title {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.15;
  color: #fff;
  letter-spacing: -0.03em;
  margin-bottom: var(--spacing-md);
}

.mock-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}

.mock-actions {
  display: flex;
  gap: var(--spacing-md);
}

.mock-btn {
  padding: 10px 20px;
  border-radius: var(--border-radius-md);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}

.mock-btn-primary {
  background-color: var(--color-accent);
  color: #fff;
}

.mock-btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 15px rgba(0, 149, 255, 0.3);
}

.mock-btn-secondary {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  color: #fff;
}

.mock-btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

/* Features Grid */
.mock-features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.section-title {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #fff;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

.feature-card {
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  transition: all 0.2s ease;
}

.feature-card:hover {
  border-color: rgba(255, 255, 255, 0.08);
  background-color: rgba(255, 255, 255, 0.03);
}

.feature-icon {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xs);
}

.feature-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
}

.feature-card p {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  line-height: 1.4;
  flex: 1;
}

.mock-card-btn {
  background: none;
  border: none;
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  padding: var(--spacing-xs) 0;
  width: fit-content;
}

.mock-card-btn:hover {
  text-decoration: underline;
}

/* Detail Card */
.mock-text-section {
  width: 100%;
}

.text-detail-card {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0.01) 100%);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.text-detail-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
}

.text-detail-card p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* Images Grid */
.mock-images-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.images-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.mock-image-card {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.05);
  background-color: rgba(0, 0, 0, 0.2);
  transition: all 0.2s ease;
}

.mock-img-placeholder {
  height: 140px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.img-grad-1 {
  background: linear-gradient(135deg, hsl(210, 80%, 25%) 0%, hsl(270, 80%, 25%) 100%);
}

.img-grad-2 {
  background: linear-gradient(135deg, hsl(150, 80%, 20%) 0%, hsl(210, 80%, 25%) 100%);
}

.mock-img-placeholder .img-badge {
  font-size: 0.7rem;
  font-weight: 700;
  background-color: rgba(0, 0, 0, 0.6);
  color: #fff;
  padding: 4px var(--spacing-sm);
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.img-details {
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.img-details h5 {
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
}

.img-details p {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

/* ==========================================================================
   INSPECTION OVERLAYS & SELECTED VISUAL STATES
   ========================================================================== */
/* Hover Overlay style */
.inspect-hovered {
  outline: 2px dashed var(--color-accent) !important;
  background-color: rgba(0, 149, 255, 0.08) !important;
  cursor: pointer !important;
}

/* Selected visual style */
.inspect-selected {
  outline: 2px solid var(--color-accent) !important;
  box-shadow: 0 0 16px rgba(0, 149, 255, 0.25) !important;
}

/* ==========================================================================
   RIGHT COLUMN: LATERAL STAGING PANEL (GLASSMORPHIC)
   ========================================================================== */
.staging-panel {
  background: rgba(22, 28, 38, 0.65);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border-left: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  padding: var(--spacing-lg);
  gap: var(--spacing-xl);
  box-shadow: -5px 0 25px var(--glass-shadow);
}

.staging-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.section-heading {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-bottom: var(--spacing-sm);
}

/* Metadata Box */
.meta-empty {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px dashed rgba(255, 255, 255, 0.1);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  text-align: center;
  line-height: 1.45;
}

.hidden {
  display: none !important;
}

#meta-details {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--glass-border);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
}

.meta-row {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.meta-label {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  font-weight: 600;
}

.meta-value {
  font-family: monospace;
  font-size: 0.8rem;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  word-break: break-all;
}

.tag-value {
  background-color: rgba(270, 80, 60, 0.1);
  color: #fca5a5;
  width: fit-content;
  font-weight: 700;
}

.class-value {
  background-color: rgba(0, 149, 255, 0.1);
  color: #93c5fd;
}

.selector-value {
  background-color: rgba(255, 255, 255, 0.04);
  color: #e2e8f0;
}

.ui-type-value {
  background-color: rgba(168, 85, 247, 0.1);
  color: #d8b4fe;
  font-weight: 700;
  width: fit-content;
}

/* Sliders Control Groups */
.properties-controls {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.control-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.control-header label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.val-wrapper {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.control-num {
  font-size: 0.75rem;
  font-family: monospace;
  background-color: rgba(255, 255, 255, 0.05);
  padding: 2px 6px;
  border-radius: var(--border-radius-sm);
  font-weight: 600;
}

.token-badge {
  font-size: 0.65rem;
  font-weight: 700;
  background-color: rgba(168, 85, 247, 0.15);
  color: #d8b4fe;
  border: 1px solid rgba(168, 85, 247, 0.25);
  padding: 1px 5px;
  border-radius: var(--border-radius-sm);
}

/* Custom Sliders */
.slider {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.1);
  outline: none;
  transition: background 0.15s ease;
  cursor: pointer;
}

.slider:hover {
  background: rgba(255, 255, 255, 0.15);
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 6px rgba(0, 149, 255, 0.6);
  transition: transform 0.1s ease;
}

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

.slider::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 6px rgba(0, 149, 255, 0.6);
  border: none;
  transition: transform 0.1s ease;
  cursor: pointer;
}

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

/* Colors Panel */
.color-control-box {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  background-color: rgba(255, 255, 255, 0.01);
  border: 1px solid rgba(255, 255, 255, 0.03);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
}

.color-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.hsl-sliders {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.slider-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.hsl-label {
  font-size: 0.7rem;
  font-weight: 800;
  width: 12px;
  color: var(--color-text-secondary);
}

.hsl-val {
  font-size: 0.7rem;
  font-family: monospace;
  width: 32px;
  text-align: right;
  color: var(--color-text-secondary);
}

.color-h-slider {
  background: linear-gradient(to right, #f00 0%, #ff0 17%, #0f0 33%, #0ff 50%, #00f 67%, #f0f 83%, #f00 100%) !important;
}

.color-h-slider::-webkit-slider-thumb {
  background: #fff;
  box-shadow: 0 0 4px rgba(0, 0, 0, 0.5);
}

.color-palette-repr {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xs);
}

.color-preview-swatch {
  width: 24px;
  height: 24px;
  border-radius: var(--border-radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.2);
  background-color: #000;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.hsl-string {
  font-family: monospace;
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  word-break: break-all;
}

/* Staged Changes List */
.changes-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  max-height: 250px;
  overflow-y: auto;
  padding-right: var(--spacing-xs);
}

.no-changes {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  font-style: italic;
  text-align: center;
  padding: var(--spacing-md) 0;
}

.change-item {
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  overflow: hidden;
}

.change-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: rgba(255, 255, 255, 0.03);
  padding: 6px 10px;
  border-bottom: 1px solid var(--glass-border);
}

.change-selector {
  font-family: monospace;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-primary);
  max-width: 220px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.revert-btn {
  background: none;
  border: none;
  color: #fca5a5; /* red light */
  font-size: 0.65rem;
  font-weight: 700;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: var(--border-radius-sm);
  transition: background-color 0.2s;
}

.revert-btn:hover {
  background-color: rgba(239, 68, 68, 0.15);
}

.change-body {
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.change-prop {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.75rem;
}

.prop-name {
  color: var(--color-text-secondary);
  font-family: monospace;
}

.prop-val-old {
  color: #fca5a5;
  text-decoration: line-through;
  font-family: monospace;
}

.prop-arrow {
  color: var(--color-text-secondary);
}

.prop-val-new {
  color: #86efac; /* green light */
  font-family: monospace;
  font-weight: 600;
}

/* ==========================================================================
   FLOATING ACTION BUTTON (FAB) & DROPDOWN MENU
   ========================================================================== */
.fab-wrapper {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: 999;
}

.fab {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--glass-border);
  color: var(--color-text-primary);
  padding: 10px 18px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  box-shadow: 0 4px 15px var(--glass-shadow);
  backdrop-filter: blur(10px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.fab:hover {
  background-color: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.fab-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-text-secondary);
  transition: background-color 0.3s;
}

/* When inspection mode is active, dot is electric blue */
.fab.inspect-active .fab-status-dot {
  background-color: var(--color-accent);
  box-shadow: 0 0 8px var(--color-accent);
  animation: pulse-glow-dot 1.5s infinite ease-in-out;
}

.fab-label {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

.fab-icon {
  font-size: 1rem;
}

/* FAB Menu dropdown */
.fab-menu {
  position: absolute;
  bottom: 50px;
  right: 0;
  width: 250px;
  background: rgba(22, 28, 38, 0.9);
  backdrop-filter: blur(15px) saturate(180%);
  -webkit-backdrop-filter: blur(15px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 8px 32px var(--glass-shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: slide-up 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.fab-menu-header {
  padding: 10px var(--spacing-md);
  border-bottom: 1px solid var(--glass-border);
  background-color: rgba(255, 255, 255, 0.02);
}

.fab-menu-header h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  font-weight: 700;
  letter-spacing: 0.05em;
}

.fab-menu-items {
  display: flex;
  flex-direction: column;
}

.fab-menu-items button {
  background: none;
  border: none;
  color: var(--color-text-primary);
  padding: var(--spacing-md);
  font-size: 0.8rem;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  transition: background-color 0.15s ease;
  width: 100%;
}

.fab-menu-items button:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: #fff;
}

.item-icon {
  font-size: 1rem;
}

/* ==========================================================================
   ANIMATIONS
   ========================================================================== */
@keyframes pulse-glow {
  0%, 100% {
    transform: scale(1);
    opacity: 0.8;
  }
  50% {
    transform: scale(1.15);
    opacity: 1;
  }
}

@keyframes pulse-glow-dot {
  0%, 100% {
    transform: scale(1);
    opacity: 0.7;
  }
  50% {
    transform: scale(1.3);
    opacity: 1;
  }
}

@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ==========================================================================
   BOUNDING BOX CANVAS OVERLAY & DRAWING STYLES
   ========================================================================== */
#canvas-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10;
  pointer-events: none;
  overflow: visible;
  border-radius: var(--border-radius-lg);
}

#canvas-overlay.drawing-active {
  pointer-events: auto;
  cursor: crosshair;
}

/* Bounding box styles */
.drawing-rect-temp {
  fill: hsla(270, 80%, 60%, 0.15);
  stroke: hsl(270, 80%, 60%);
  stroke-width: 2px;
  stroke-dasharray: 4, 4;
}

.drawing-rect-completed {
  fill: hsla(270, 80%, 60%, 0.08);
  stroke: hsl(270, 80%, 60%);
  stroke-width: 2px;
  transition: all 0.2s ease;
}

.drawing-rect-completed:hover {
  fill: hsla(270, 80%, 60%, 0.2);
  stroke-width: 3px;
}

.drawing-label-bg {
  fill: hsl(270, 80%, 60%);
  rx: 3px;
  ry: 3px;
}

.drawing-label-text {
  fill: hsl(220, 10%, 95%);
  font-family: monospace;
  font-size: 11px;
  font-weight: bold;
}

/* FAB state for drawing mode */
.fab.drawing-active .fab-status-dot {
  background-color: var(--color-violet);
  box-shadow: 0 0 8px var(--color-violet);
  animation: pulse-glow-dot 1.5s infinite ease-in-out;
}

/* Custom styles for insertion change list items */
.change-item-insertion {
  border-left: 3px solid var(--color-violet) !important;
}

/* ==========================================================================
   MODAL WINDOW DIALOG
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: hsla(220, 40%, 7%, 0.7);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  transition: opacity 0.25s ease;
}

.modal-overlay.hidden {
  display: none !important;
}

.modal-content {
  width: 90%;
  max-width: 500px;
  background: hsla(220, 15%, 10%, 0.95);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 10px 40px var(--glass-shadow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: slide-up 0.25s ease;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--glass-border);
  background-color: rgba(255, 255, 255, 0.02);
}

.modal-header h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
}

.modal-close-btn {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  transition: color 0.2s;
}

.modal-close-btn:hover {
  color: #fff;
}

.modal-body {
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.form-group label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.resolved-selector-display {
  font-family: monospace;
  font-size: 0.8rem;
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-md);
  color: #86efac;
  word-break: break-all;
}

.modal-select,
.modal-textarea {
  background-color: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  color: var(--color-text-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.85rem;
  outline: none;
  transition: border-color 0.2s;
}

.modal-select:focus,
.modal-textarea:focus {
  border-color: var(--color-violet);
  box-shadow: 0 0 8px hsla(270, 80%, 60%, 0.3);
}

.modal-textarea {
  min-height: 100px;
  resize: vertical;
  font-family: inherit;
  line-height: 1.5;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: 1px solid var(--glass-border);
  background-color: rgba(255, 255, 255, 0.02);
}

.modal-btn {
  padding: 8px 16px;
  border-radius: var(--border-radius-md);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}

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

.modal-btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.modal-btn-primary {
  background-color: var(--color-violet);
  color: #fff;
  box-shadow: 0 0 10px hsla(270, 80%, 60%, 0.4);
}

.modal-btn-primary:hover {
  filter: brightness(1.1);
}

/* ==========================================================================
   VOICE ANNOTATION SECTION (Milestone 4)
   ========================================================================== */
.voice-annotation-section {
  margin-top: var(--spacing-xs);
}

.voice-controls-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--glass-border);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.voice-actions {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

.voice-btn {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  color: var(--color-text-primary);
  padding: 10px var(--spacing-md);
  border-radius: var(--border-radius-md);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  flex: 1;
}

.voice-btn:hover:not(:disabled) {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

.voice-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* Microphone record button - active recording state with pulsing glow */
.record-btn.recording {
  background-color: hsl(350, 80%, 45%) !important;
  border-color: hsl(350, 80%, 55%) !important;
  color: #fff !important;
  animation: recording-pulse 1.5s infinite ease-in-out !important;
  box-shadow: 0 0 15px rgba(239, 68, 68, 0.55) !important;
}

.record-btn.recording:hover {
  background-color: hsl(350, 80%, 50%) !important;
}

.delete-btn {
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--border-radius-md);
  background-color: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.25);
  color: #fca5a5;
  display: flex;
  align-items: center;
  justify-content: center;
}

.delete-btn:hover:not(:disabled) {
  background-color: rgba(239, 68, 68, 0.2);
  border-color: rgba(239, 68, 68, 0.4);
}

/* Voice timer and status container */
.voice-status {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.85rem;
  background-color: rgba(0, 0, 0, 0.25);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-sm);
  border-left: 3px solid hsl(350, 80%, 50%);
  align-self: center;
  width: 100%;
}

.pulse-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: hsl(350, 80%, 50%);
  animation: pulse-glow-dot 1s infinite ease-in-out;
}

#voice-timer {
  font-family: monospace;
  font-weight: 700;
  color: #fff;
}

.status-label {
  color: var(--color-text-secondary);
}

/* Audio preview container styling */
.audio-player-container {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

#voice-audio-player {
  width: 100%;
  height: 36px;
  border-radius: var(--border-radius-sm);
  background-color: #1e293b;
  outline: none;
}

/* MediaRecorder recording glow keyframe */
@keyframes recording-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.6);
  }
  70% {
    box-shadow: 0 0 0 8px rgba(239, 68, 68, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0);
  }
}

/* Floating Microphone Badge styles */
.voice-badge {
  position: absolute;
  top: -12px;
  right: var(--spacing-sm);
  z-index: 100;
  background: hsla(210, 100%, 50%, 0.25);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--color-accent);
  color: #fff;
  padding: 2px 6px;
  border-radius: 12px;
  font-size: 0.7rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(0, 149, 255, 0.4);
  pointer-events: none;
  animation: float-badge 2s infinite ease-in-out;
}

@keyframes float-badge {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-4px);
  }
}

.voice-note-indicator {
  border-top: 1px dashed rgba(255, 255, 255, 0.05);
  margin-top: 4px;
  padding-top: var(--spacing-sm) !important;
}

/* ==========================================================================
   TOAST NOTIFICATION (Milestone 5)
   ========================================================================== */
.toast-notification {
  position: fixed;
  bottom: var(--spacing-lg);
  left: var(--spacing-lg);
  z-index: 10000;
  background: rgba(22, 28, 38, 0.95);
  backdrop-filter: blur(15px) saturate(180%);
  -webkit-backdrop-filter: blur(15px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 8px 32px var(--glass-shadow), 0 0 15px rgba(0, 149, 255, 0.2);
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--color-text-primary);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  min-width: 300px;
  max-width: 450px;
  animation: toast-slide-in 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transition: all 0.3s ease;
}

.toast-notification.hide {
  opacity: 0;
  transform: translateY(20px) scale(0.9);
  pointer-events: none;
}

.toast-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--color-accent);
}

.toast-body {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  line-height: 1.4;
  word-break: break-all;
}

.toast-meta {
  margin-top: 6px;
  font-weight: bold;
}

@keyframes toast-slide-in {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ==========================================================================
   REFAC: HIERARCHY TREE, FOCUS ROOT & UNDOCK LAYOUTS
   ========================================================================== */

/* Reference focus root outline */
.inspect-focus-root {
  outline: 2px dashed rgba(0, 149, 255, 0.6) !important;
  outline-offset: 3px !important;
  background-color: rgba(0, 149, 255, 0.02) !important;
}

/* Undock panel toggle states */
.staging-panel.docked-hidden {
  display: none !important;
}

.mock-page-container.full-width {
  flex: 0 0 100% !important;
  max-width: 100% !important;
  width: 100% !important;
}

.app-layout.undocked {
  grid-template-columns: 1fr !important;
}

/* Metadata toolbar button */
.meta-section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.meta-action-btn {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  color: var(--color-text-primary);
  padding: 4px 10px;
  border-radius: var(--border-radius-sm);
  font-size: 0.7rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: all 0.2s ease;
}

.meta-action-btn:hover {
  background-color: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
}

.hierarchy-header-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-xs);
  border-top: 1px dashed rgba(255, 255, 255, 0.08);
  padding-top: var(--spacing-sm);
}

/* Dynamic DOM Tree styles */
.hierarchy-tree-container {
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-height: 180px;
  overflow-y: auto;
  background-color: rgba(0, 0, 0, 0.15);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  padding: 6px;
  margin-top: var(--spacing-xs);
}

.tree-node {
  display: flex;
  align-items: center;
  padding: 4px 8px;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  font-family: monospace;
  font-size: 0.75rem;
  transition: all 0.15s ease;
  user-select: none;
  color: var(--color-text-secondary);
}

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

.tree-node.active-leaf {
  background-color: rgba(0, 149, 255, 0.16) !important;
  color: #fff !important;
  border: 1px solid rgba(0, 149, 255, 0.3) !important;
}

.tree-node.focus-root {
  border-left: 2px solid var(--color-accent) !important;
}

.tree-arrow {
  display: inline-block;
  width: 10px;
  margin-right: 6px;
  text-align: center;
  transition: transform 0.15s ease;
  font-size: 0.6rem;
  color: var(--color-text-secondary);
}

.tree-arrow.collapsed {
  transform: rotate(-90deg);
}

.tree-tag {
  color: var(--color-accent);
  font-weight: 700;
}

.tree-node.active-leaf .tree-tag {
  color: #93c5fd;
}

.tree-class {
  color: #c084fc;
  margin-left: 2px;
}

.tree-badge {
  margin-left: auto;
  font-size: 0.6rem;
  background-color: rgba(168, 85, 247, 0.2);
  border: 1px solid rgba(168, 85, 247, 0.4);
  color: #d8b4fe;
  padding: 0 4px;
  border-radius: 4px;
}

/* Premium text input field in Visual Sandbox */
.text-input {
  width: 100%;
  background-color: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  color: var(--color-text-primary);
  padding: 6px var(--spacing-sm);
  font-size: 0.8rem;
  outline: none;
  transition: all 0.2s ease;
  margin-top: 4px;
}

.text-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 8px rgba(0, 149, 255, 0.35);
}