/**
 * Decka.ai Unified CSS Architecture
 * Consolidated, normalized, and maintainable CSS structure
 * Version: 3.0.0 - Clean Architecture
 */

/* === CSS CUSTOM PROPERTIES (DESIGN TOKENS) === */
:root {
  /* decka.ai Color Palette */
  --decka-primary: #7106ee;
  --decka-primary-dark: #5a05c4;
  --decka-primary-light: #8b2eff;
  --decka-primary-bg: #f5f1ff;
  
  /* Semantic Colors */
  --decka-success: #28a745;
  --decka-warning: #ffc107;
  --decka-danger: #dc3545;
  --decka-info: #17a2b8;
  
  /* Neutral Palette */
  --decka-white: #ffffff;
  --decka-gray-50: #f8f9fa;
  --decka-gray-100: #f1f3f4;
  --decka-gray-200: #e9ecef;
  --decka-gray-300: #dee2e6;
  --decka-gray-400: #ced4da;
  --decka-gray-500: #6c757d;
  --decka-gray-600: #495057;
  --decka-gray-700: #343a40;
  --decka-gray-800: #212529;
  --decka-gray-900: #000000;
  
  /* Text Colors */
  --decka-text-primary: #212529;
  --decka-text-secondary: #6c757d;
  --decka-text-muted: #adb5bd;
  --decka-text-light: #f8f9fa;
  
  /* Background Colors */
  --decka-bg-primary: #ffffff;
  --decka-bg-secondary: #f8f9fa;
  --decka-bg-tertiary: #f1f3f4;
  --decka-bg-dark: #212529;
  
  /* Border Colors */
  --decka-border-color: #dee2e6;
  --decka-border-light: #e9ecef;
  --decka-border-dark: #ced4da;
  
  /* Canvas Colors */
  --decka-canvas-bg: #f8f9fa;
  --decka-canvas-border: #e9ecef;
  
  /* Shadows */
  --decka-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
  --decka-shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 1px 3px rgba(0, 0, 0, 0.1);
  --decka-shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
  --decka-shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.1), 0 8px 16px rgba(0, 0, 0, 0.06);
  
  /* Typography */
  --decka-font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --decka-font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
  
  /* Font Sizes (8px base scale) */
  --decka-font-size-xs: 0.75rem;   /* 12px */
  --decka-font-size-sm: 0.875rem;  /* 14px */
  --decka-font-size-base: 1rem;    /* 16px */
  --decka-font-size-lg: 1.125rem;  /* 18px */
  --decka-font-size-xl: 1.25rem;   /* 20px */
  --decka-font-size-2xl: 1.5rem;   /* 24px */
  --decka-font-size-3xl: 1.875rem; /* 30px */
  --decka-font-size-4xl: 2.25rem;  /* 36px */
  --decka-font-size-5xl: 3rem;     /* 48px */
  
  /* Font Weights */
  --decka-font-weight-light: 300;
  --decka-font-weight-normal: 400;
  --decka-font-weight-medium: 500;
  --decka-font-weight-semibold: 600;
  --decka-font-weight-bold: 700;
  
  /* Line Heights */
  --decka-line-height-tight: 1.25;
  --decka-line-height-normal: 1.5;
  --decka-line-height-relaxed: 1.75;
  
  /* Spacing (8px base system) */
  --decka-space-1: 0.125rem;  /* 2px */
  --decka-space-2: 0.25rem;   /* 4px */
  --decka-space-4: 0.5rem;    /* 8px */
  --decka-space-6: 0.75rem;   /* 12px */
  --decka-space-8: 1rem;      /* 16px */
  --decka-space-12: 1.5rem;   /* 24px */
  --decka-space-16: 2rem;     /* 32px */
  --decka-space-20: 2.5rem;   /* 40px */
  --decka-space-24: 3rem;     /* 48px */
  --decka-space-32: 4rem;     /* 64px */
  --decka-space-40: 5rem;     /* 80px */
  --decka-space-48: 6rem;     /* 96px */
  --decka-space-64: 8rem;     /* 128px */
  
  /* Border Radius */
  --decka-radius-sm: 0.25rem;  /* 4px */
  --decka-radius-md: 0.375rem; /* 6px */
  --decka-radius-lg: 0.5rem;   /* 8px */
  --decka-radius-xl: 0.75rem;  /* 12px */
  --decka-radius-2xl: 1rem;    /* 16px */
  --decka-radius-full: 9999px;
  
  /* Transitions */
  --decka-transition-fast: 150ms ease;
  --decka-transition-normal: 200ms ease;
  --decka-transition-slow: 300ms ease;
  --decka-transition-bounce: 200ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* Z-Index Scale */
  --decka-z-dropdown: 1000;
  --decka-z-sticky: 1020;
  --decka-z-fixed: 1030;
  --decka-z-modal-backdrop: 1040;
  --decka-z-modal: 1050;
  --decka-z-popover: 1060;
  --decka-z-tooltip: 1070;
  --decka-z-toast: 1080;
  
  /* Layout Dimensions - STORYDOC MATCHING VALUES */
  --decka-header-height: 48px; /* Match StorydDoc compact header */
  --decka-sidebar-width: 200px; /* Wider for better thumbnail visibility */
  --decka-properties-width: 320px;
  --decka-toolbar-height: 32px; /* More compact toolbar */
  --decka-canvas-padding: 8px; /* StorydDoc-style minimal padding */
}

/* === GLOBAL RESET & BASE STYLES === */
* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  line-height: 1.5;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--decka-font-family);
  font-size: var(--decka-font-size-base);
  font-weight: var(--decka-font-weight-normal);
  line-height: var(--decka-line-height-normal);
  color: var(--decka-text-primary);
  background-color: var(--decka-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

button {
  border: none;
  background: none;
  padding: 0;
  margin: 0;
  font: inherit;
  cursor: pointer;
  outline: none;
}

input, textarea, select {
  font: inherit;
  outline: none;
}

/* === MAIN LAYOUT STRUCTURE === */
.decka-editor-body {
  height: 100vh;
  overflow: hidden;
  background: var(--decka-bg-secondary);
}

.decka-editor-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  width: 100vw;
  background: var(--decka-bg-primary);
}

/* === HEADER === */
.decka-header {
  position: relative;
  z-index: var(--decka-z-sticky);
  height: var(--decka-header-height);
  background: var(--decka-bg-primary);
  border-bottom: 1px solid var(--decka-border-light);
  box-shadow: var(--decka-shadow-sm);
  flex-shrink: 0;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 var(--decka-space-8);
  max-width: 100%;
}

/* === HEADER LEFT SECTION === */
.header-left {
  display: flex;
  align-items: center;
  gap: var(--decka-space-8);
  flex-shrink: 0;
  min-width: auto;
}

.decka-logo {
  display: flex;
  align-items: center;
  gap: var(--decka-space-6);
  font-size: var(--decka-font-size-lg);
  font-weight: var(--decka-font-weight-semibold);
  color: var(--decka-primary);
  text-decoration: none;
}

.decka-logo i {
  font-size: var(--decka-font-size-xl);
}

.logo-text {
  color: var(--decka-text-primary);
}

.header-nav {
  display: flex;
  align-items: center;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--decka-space-2);
  padding: var(--decka-space-4) var(--decka-space-6);
  font-size: var(--decka-font-size-xs);
  font-weight: var(--decka-font-weight-medium);
  color: var(--decka-text-secondary);
  text-decoration: none;
  border-radius: var(--decka-radius-md);
  transition: all var(--decka-transition-fast);
  white-space: nowrap;
}

.nav-link:hover {
  background: var(--decka-bg-secondary);
  color: var(--decka-text-primary);
}

/* === HEADER CENTER SECTION === */
.header-center {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  min-width: 0;
  padding: 0 var(--decka-space-8);
}

.presentation-title-container {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--decka-space-8);
  max-width: 600px;
  width: 100%;
}

.presentation-title-input {
  background: transparent;
  border: none;
  font-size: var(--decka-font-size-base);
  min-width: 200px;
  max-width: 550px;
  font-weight: var(--decka-font-weight-semibold);
  color: var(--decka-text-primary);
  text-align: center;
  width: 100%;
  padding: var(--decka-space-4) var(--decka-space-6);
  border-radius: var(--decka-radius-md);
  transition: all var(--decka-transition-fast);
  text-overflow: ellipsis;
  overflow: hidden;
}

.presentation-title-input:hover {
  background: var(--decka-bg-secondary);
}

.presentation-title-input:focus {
  background: var(--decka-bg-primary);
  box-shadow: 0 0 0 2px var(--decka-primary);
}

.title-status {
  display: flex;
  align-items: center;
  gap: var(--decka-space-2);
  font-size: var(--decka-font-size-xs);
  color: var(--decka-success);
  white-space: nowrap;
  flex-shrink: 0;
}

.title-status i {
  font-size: 10px;
}

.status-text {
  font-weight: var(--decka-font-weight-medium);
  font-size: 11px;
}

/* === HEADER RIGHT SECTION === */
.header-right {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--decka-space-8);
}

.action-group {
  display: flex;
  align-items: center;
  gap: var(--decka-space-2);
  padding: var(--decka-space-2);
  background: var(--decka-bg-secondary);
  border-radius: var(--decka-radius-md);
}

.zoom-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 48px;
  height: 32px;
  font-size: var(--decka-font-size-xs);
  font-weight: var(--decka-font-weight-medium);
  color: var(--decka-text-secondary);
  background: var(--decka-bg-primary);
  border-radius: var(--decka-radius-sm);
  margin: 0 var(--decka-space-2);
}

/* === HEADER BUTTON OVERRIDES === */
.decka-header .btn-action {
  width: 32px;
  height: 32px;
  font-size: var(--decka-font-size-sm);
  color: var(--decka-text-secondary);
  background: transparent;
  border-radius: var(--decka-radius-sm);
  transition: all var(--decka-transition-fast);
}

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

.decka-header .btn-primary {
  height: 36px;
  font-size: var(--decka-font-size-sm);
  font-weight: var(--decka-font-weight-semibold);
  padding: 0 var(--decka-space-16);
}

.decka-header .btn-secondary {
  height: 36px;
  font-size: var(--decka-font-size-sm);
  padding: 0 var(--decka-space-12);
  border: 1px solid var(--decka-border-color);
}

/* === DROPDOWN MENU OVERRIDES === */
.decka-header .dropdown-menu {
  min-width: 200px;
  padding: var(--decka-space-4);
  border: 1px solid var(--decka-border-light);
  border-radius: var(--decka-radius-lg);
  box-shadow: var(--decka-shadow-lg);
  margin-top: var(--decka-space-4);
}

.decka-header .dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--decka-space-6);
  padding: var(--decka-space-6) var(--decka-space-8);
  font-size: var(--decka-font-size-sm);
  color: var(--decka-text-primary);
  border-radius: var(--decka-radius-md);
  transition: all var(--decka-transition-fast);
  text-decoration: none;
}

.decka-header .dropdown-item:hover {
  background: var(--decka-bg-secondary);
  color: var(--decka-text-primary);
}

.decka-header .dropdown-divider {
  margin: var(--decka-space-4) 0;
  opacity: 0.5;
}

/* === RESPONSIVE HEADER === */
@media (max-width: 1024px) {
  .header-content {
    padding: 0 var(--decka-space-12);
  }
  
  .header-center {
    padding: 0 var(--decka-space-8);
  }
  
  .presentation-title-container {
    max-width: 350px;
  }

  .presentation-title-input {
    max-width: 250px;
  }
  
  .action-group {
    display: none;
  }
  
  .action-group:last-child {
    display: flex;
  }
}

@media (max-width: 768px) {
  .header-left .header-nav {
    display: none;
  }
  
  .header-center {
    padding: 0 var(--decka-space-4);
  }
  
  .presentation-title-container {
    max-width: 250px;
  }

  .presentation-title-input {
    font-size: var(--decka-font-size-sm);
    max-width: 150px;
  }

  .title-status {
    display: none;
  }
  
  .header-actions {
    gap: var(--decka-space-4);
  }
  
  .decka-header .btn-primary,
  .decka-header .btn-secondary {
    padding: 0 var(--decka-space-8);
    font-size: var(--decka-font-size-xs);
  }
}

/* === MAIN LAYOUT === */
.decka-main-layout {
  display: flex;
  flex: 1;
  min-height: 0;
  background: var(--decka-bg-secondary);
  width: 100%;
  overflow: hidden;
}

/* === SLIDE NAVIGATOR (LEFT SIDEBAR) === */
.slide-navigator-panel {
  position: fixed;
  top: var(--decka-header-height);
  left: 0;
  width: var(--decka-sidebar-width);
  height: calc(100vh - var(--decka-header-height));
  background: var(--decka-bg-primary);
  border-right: 1px solid var(--decka-border-light);
  display: flex;
  flex-direction: column;
  z-index: 1000;
  overflow-y: auto;
  overflow-x: hidden;
  box-shadow: var(--decka-shadow-sm);
}

.navigator-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--decka-space-6);
  border-bottom: 1px solid var(--decka-border-light);
  background: var(--decka-bg-secondary);
  text-align: center;
  flex-shrink: 0;
}

.slides-container {
  flex: 1;
  overflow-y: auto;
  padding: var(--decka-space-6) var(--decka-space-4);
  min-height: 0;
}

/* === CANVAS AREA (CENTER) - NORMALIZED === */
.canvas-area {
  position: fixed;
  top: var(--decka-header-height);
  left: var(--decka-sidebar-width);
  right: 48px; /* Match StorydDoc compact right sidebar */
  height: calc(100vh - var(--decka-header-height));
  display: flex;
  flex-direction: column;
  background: var(--decka-canvas-bg);
  z-index: 1;
}

/* === ELEMENT TOOLBAR WITH INTEGRATED SLIDE TOOLBAR - STORYDOC STYLE === */
.element-toolbar {
  display: flex;
  align-items: center;
  justify-content: center; /* Center like StorydDoc */
  gap: var(--decka-space-4); /* Reduce gap for compactness */
  height: var(--decka-toolbar-height);
  padding: 0 var(--decka-space-8); /* Reduce padding */
  background: var(--decka-bg-primary);
  border-bottom: 1px solid var(--decka-border-light);
  overflow-x: auto;
  flex-shrink: 0;
  box-shadow: var(--decka-shadow-sm); /* Add subtle shadow like StorydDoc */
  position: relative; /* Ensure proper stacking context */
}

/* === SLIDE TOOLBAR - FLOATING STORYDOC STYLE === */
.slide-toolbar {
  position: fixed !important;
  top: calc(var(--decka-header-height) + 20px) !important;
  left: 50% !important;
  transform: translateX(-50%) !important;
  z-index: 1001 !important;
  display: flex !important;
  align-items: center !important;
  gap: 4px !important;
  background: white !important;
  border-radius: 12px !important;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15), 0 2px 4px rgba(0, 0, 0, 0.1) !important;
  padding: 8px 12px !important;
  border: 1px solid rgba(0, 0, 0, 0.1) !important;
  transition: all 0.2s ease !important;
  min-height: auto !important;
  flex-direction: row !important;
  flex-wrap: nowrap !important;
  width: auto !important;
  max-width: none !important;
  opacity: 1 !important;
}

/* Slide Toolbar Button Styles */
.slide-toolbar-btn {
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 24px !important; /* Compact like StorydDoc */
  height: 24px !important;
  background: transparent !important;
  color: #6b7280 !important;
  border: none !important;
  border-radius: 4px !important;
  font-size: 12px !important;
  transition: all 0.15s ease !important;
  cursor: pointer !important;
  position: relative !important;
  margin: 0 !important;
  flex-shrink: 0 !important;
  min-width: 24px !important;
  box-sizing: border-box !important;
}

.slide-toolbar-btn:hover {
  background: #f3f4f6 !important;
  color: #374151 !important;
  transform: scale(1.05) !important;
}

.slide-toolbar-btn.active {
  background: #4f46e5 !important;
  color: #ffffff !important;
  box-shadow: 0 0 0 2px #e0e7ff, 0 2px 8px rgba(79, 70, 229, 0.3) !important;
  transform: scale(1.05) !important;
}

.slide-toolbar-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  transform: none;
  pointer-events: none;
}

/* Slide Toolbar Tooltips */
.slide-toolbar-btn::before {
  content: attr(title);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: #1f2937;
  color: white;
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
  pointer-events: none;
  z-index: 99999; /* Above header */
}

.slide-toolbar-btn::after {
  content: '';
  position: absolute;
  bottom: calc(100% + 2px);
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid #1f2937;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
  pointer-events: none;
  z-index: 99999; /* Above header */
}

.slide-toolbar-btn:hover::before,
.slide-toolbar-btn:hover::after {
  opacity: 1;
  visibility: visible;
}

.slide-toolbar-btn:disabled::before,
.slide-toolbar-btn:disabled::after {
  display: none;
}

/* Slide Toolbar Separators */
.slide-toolbar-separator {
  width: 1px !important;
  height: 16px !important; /* Compact height */
  background: #e5e7eb !important;
  margin: 0 3px !important;
  flex-shrink: 0 !important;
}

/* Toolbar States */
.slide-toolbar.inactive {
  opacity: 0.7;
}

.slide-toolbar.active {
  opacity: 1;
}

.slide-toolbar.inactive .slide-toolbar-btn {
  color: #9ca3af;
}

.slide-toolbar.inactive .slide-toolbar-btn:hover {
  background-color: #f3f4f6;
  color: #6b7280;
}

.slide-toolbar.active .slide-toolbar-btn {
  color: #6b7280;
}

/* === SLIDE TOOLBAR PANELS === */

.slide-toolbar-panel {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: white;
  border: 1px solid #e1e5e9;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  z-index: 1000;
  min-width: 280px;
  max-width: 400px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: all 0.2s ease;
  font-family: var(--decka-font-family);
}

.slide-toolbar-panel.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.slide-toolbar-panel-header {
  padding: 16px 20px 12px 20px;
  border-bottom: 1px solid #f1f3f4;
  background: #fafbfc;
  border-radius: 8px 8px 0 0;
}

.slide-toolbar-panel-title {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: #202124;
  line-height: 1.4;
}

.slide-toolbar-panel-content {
  padding: 16px 20px 20px 20px;
  max-height: 400px;
  overflow-y: auto;
}

/* === GRID PANEL STYLES === */
.grid-toggle-container,
.rulers-toggle-container,
.snap-toggle-container,
.guides-toggle-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: #f8f9fa;
  border-radius: 8px;
  margin-bottom: 16px;
}

.grid-toggle-container span,
.rulers-toggle-container span,
.snap-toggle-container span,
.guides-toggle-container span {
  font-size: 14px;
  font-weight: 500;
  color: #202124;
}

/* Toggle Switch */
.grid-toggle,
.rulers-toggle,
.snap-toggle,
.guides-toggle,
.anchor-toggle {
  position: relative;
  width: 44px;
  height: 24px;
  background: #dadce0;
  border-radius: 12px;
  cursor: pointer;
  transition: background 0.2s ease;
}

.grid-toggle.active,
.rulers-toggle.active,
.snap-toggle.active,
.guides-toggle.active,
.anchor-toggle.active {
  background: #7106ee;
}

.grid-toggle-knob,
.rulers-toggle-knob,
.snap-toggle-knob,
.guides-toggle-knob,
.anchor-toggle-knob {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: white;
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  transition: transform 0.2s ease;
}

.grid-toggle.active .grid-toggle-knob,
.rulers-toggle.active .rulers-toggle-knob,
.snap-toggle.active .snap-toggle-knob,
.guides-toggle.active .guides-toggle-knob,
.anchor-toggle.active .anchor-toggle-knob {
  transform: translateX(20px);
}

/* Grid Options */
.grid-options,
.rulers-options,
.snap-options,
.guides-options {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.grid-option-group,
.rulers-option-group,
.snap-option-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.grid-option-label,
.rulers-option-label,
.snap-option-label {
  font-size: 12px;
  font-weight: 600;
  color: #5f6368;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Grid Size Controls */
.grid-size-controls {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.grid-size-controls > div:first-child {
  display: flex;
  gap: 8px;
}

.grid-size-btn {
  flex: 1;
  padding: 8px 12px;
  background: #f1f3f4;
  border: 1px solid #e1e5e9;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  color: #5f6368;
  cursor: pointer;
  transition: all 0.15s ease;
}

.grid-size-btn:hover {
  background: #e8eaed;
  border-color: #dadce0;
}

.grid-size-btn.active {
  background: #7106ee;
  border-color: #7106ee;
  color: white;
}

/* Slider Styles */
.grid-size-slider,
.grid-opacity-slider,
.snap-tolerance-slider,
.guides-opacity-slider {
  width: 100%;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: #e1e5e9;
  border-radius: 3px;
  outline: none;
  cursor: pointer;
}

.grid-size-slider::-webkit-slider-thumb,
.grid-opacity-slider::-webkit-slider-thumb,
.snap-tolerance-slider::-webkit-slider-thumb,
.guides-opacity-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  background: #7106ee;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(113, 6, 238, 0.3);
  transition: transform 0.1s ease;
}

.grid-size-slider::-webkit-slider-thumb:hover,
.grid-opacity-slider::-webkit-slider-thumb:hover {
  transform: scale(1.1);
}

/* Grid Type Options */
.grid-type-options,
.rulers-unit-options {
  display: flex;
  gap: 8px;
}

.grid-type-option {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 12px 8px;
  background: #f8f9fa;
  border: 2px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.grid-type-option i {
  font-size: 18px;
  color: #5f6368;
}

.grid-type-option span {
  font-size: 11px;
  font-weight: 500;
  color: #5f6368;
}

.grid-type-option:hover {
  background: #f1f3f4;
}

.grid-type-option.active {
  background: rgba(113, 6, 238, 0.08);
  border-color: #7106ee;
}

.grid-type-option.active i,
.grid-type-option.active span {
  color: #7106ee;
}

/* Rulers Unit Options */
.rulers-unit-option {
  flex: 1;
  padding: 10px 16px;
  background: #f8f9fa;
  border: 2px solid transparent;
  border-radius: 6px;
  text-align: center;
  font-size: 13px;
  font-weight: 500;
  color: #5f6368;
  cursor: pointer;
  transition: all 0.15s ease;
}

.rulers-unit-option:hover {
  background: #f1f3f4;
}

.rulers-unit-option.active {
  background: rgba(113, 6, 238, 0.08);
  border-color: #7106ee;
  color: #7106ee;
}

/* Opacity Display */
.grid-opacity-value,
.guides-opacity-value {
  font-size: 13px;
  font-weight: 500;
  color: #5f6368;
  margin-left: 8px;
}

/* Snap Options */
.snap-checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.snap-checkbox-item {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

.snap-checkbox {
  width: 18px;
  height: 18px;
  border: 2px solid #dadce0;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.snap-checkbox.active {
  background: #7106ee;
  border-color: #7106ee;
}

.snap-checkbox.active::after {
  content: '\f00c';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 10px;
  color: white;
}

.snap-checkbox-label {
  font-size: 14px;
  color: #202124;
}

/* Snap Checkbox Group */
.snap-checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.snap-checkbox-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: #f8f9fa;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.snap-checkbox-item:hover {
  background: #f1f3f4;
}

.snap-checkbox {
  width: 20px;
  height: 20px;
  border: 2px solid #dadce0;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
  flex-shrink: 0;
}

.snap-checkbox i {
  font-size: 10px;
  color: transparent;
  transition: color 0.15s ease;
}

.snap-checkbox.active {
  background: #7106ee;
  border-color: #7106ee;
}

.snap-checkbox.active i {
  color: white;
}

.snap-checkbox-content {
  display: flex;
  align-items: center;
  gap: 10px;
}

.snap-checkbox-content i {
  font-size: 14px;
  color: #5f6368;
  width: 18px;
  text-align: center;
}

.snap-checkbox-label {
  font-size: 14px;
  font-weight: 500;
  color: #202124;
}

/* Tolerance Slider Container */
.snap-tolerance-container {
  display: flex;
  align-items: center;
  gap: 12px;
}

.snap-tolerance-slider {
  flex: 1;
}

.snap-tolerance-value {
  font-size: 13px;
  font-weight: 600;
  color: #7106ee;
  min-width: 45px;
  text-align: right;
}

/* === GUIDES PANEL STYLES === */
.guides-create-buttons {
  display: flex;
  gap: 8px;
}

.guides-create-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 16px;
  background: #f8f9fa;
  border: 2px dashed #dadce0;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  color: #5f6368;
  cursor: pointer;
  transition: all 0.15s ease;
}

.guides-create-btn:hover {
  background: #f1f3f4;
  border-color: #7106ee;
  color: #7106ee;
}

.guides-create-btn i {
  font-size: 14px;
}

/* Guides List */
.guides-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 150px;
  overflow-y: auto;
}

.guides-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 20px;
  background: #f8f9fa;
  border-radius: 8px;
  color: #9ca3af;
}

.guides-empty i {
  font-size: 24px;
  opacity: 0.5;
}

.guides-empty span {
  font-size: 13px;
}

.guide-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  background: #f8f9fa;
  border-radius: 6px;
  transition: background 0.15s ease;
}

.guide-item:hover {
  background: #f1f3f4;
}

.guide-item-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.guide-item-info i {
  font-size: 12px;
  color: #7106ee;
  width: 16px;
  text-align: center;
}

.guide-item-type {
  font-size: 13px;
  font-weight: 500;
  color: #202124;
  text-transform: capitalize;
}

.guide-item-position {
  font-size: 12px;
  color: #5f6368;
  background: #e8eaed;
  padding: 2px 6px;
  border-radius: 4px;
}

.guide-item-delete {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: transparent;
  border: none;
  border-radius: 6px;
  color: #9ca3af;
  cursor: pointer;
  transition: all 0.15s ease;
}

.guide-item-delete:hover {
  background: #fee2e2;
  color: #dc2626;
}

/* Guides Appearance */
.guides-appearance {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.guides-color-row,
.guides-opacity-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.guides-color-label,
.guides-opacity-label {
  font-size: 13px;
  color: #5f6368;
}

.guides-color-picker {
  position: relative;
}

.guides-color-swatch {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  border: 2px solid #e1e5e9;
  cursor: pointer;
  transition: all 0.15s ease;
}

.guides-color-swatch:hover {
  border-color: #7106ee;
  transform: scale(1.05);
}

.guides-color-input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.guides-opacity-control {
  display: flex;
  align-items: center;
  gap: 10px;
}

.guides-opacity-slider {
  width: 100px;
}

.guides-opacity-value {
  font-size: 13px;
  font-weight: 600;
  color: #7106ee;
  min-width: 40px;
  text-align: right;
}

/* === BACKGROUND PANEL STYLES === */
.bg-tabs {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: #f1f3f4;
  border-radius: 8px;
  margin-bottom: 16px;
}

.bg-tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 10px 8px;
  background: transparent;
  border: none;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 500;
  color: #5f6368;
  cursor: pointer;
  transition: all 0.15s ease;
}

.bg-tab i {
  font-size: 16px;
}

.bg-tab:hover {
  background: rgba(255, 255, 255, 0.5);
}

.bg-tab.active {
  background: white;
  color: #7106ee;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.bg-content {
  display: none;
}

.bg-content.active {
  display: block;
}

.bg-option-group {
  margin-bottom: 16px;
}

.bg-option-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: #5f6368;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

/* Color Picker */
.bg-color-picker {
  display: flex;
  align-items: center;
  gap: 10px;
}

.bg-color-swatch {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  border: 2px solid #e1e5e9;
  cursor: pointer;
  transition: all 0.15s ease;
  position: relative;
}

.bg-color-swatch:hover {
  border-color: #7106ee;
  transform: scale(1.05);
}

.bg-color-swatch.small {
  width: 28px;
  height: 28px;
  border-radius: 6px;
}

.bg-color-input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.bg-color-hex {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid #e1e5e9;
  border-radius: 6px;
  font-size: 13px;
  font-family: monospace;
  color: #202124;
  text-transform: uppercase;
}

.bg-color-hex:focus {
  outline: none;
  border-color: #7106ee;
}

/* Preset Colors */
.bg-preset-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 6px;
}

.bg-preset {
  aspect-ratio: 1;
  border-radius: 6px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
}

.bg-preset:hover {
  transform: scale(1.1);
  border-color: #7106ee;
}

.bg-preset[data-color="#ffffff"] {
  border-color: #e1e5e9;
}

/* Gradient */
.bg-gradient-preview {
  height: 80px;
  border-radius: 8px;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.1);
}

.bg-gradient-colors {
  display: flex;
  gap: 16px;
}

.bg-gradient-color-item {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  background: #f8f9fa;
  border-radius: 8px;
}

.bg-gradient-color-item span {
  font-size: 13px;
  color: #5f6368;
}

.bg-color-mini-picker {
  position: relative;
}

.bg-gradient-directions {
  display: flex;
  gap: 8px;
}

.bg-gradient-dir {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  background: #f8f9fa;
  border: 2px solid transparent;
  border-radius: 8px;
  color: #5f6368;
  cursor: pointer;
  transition: all 0.15s ease;
}

.bg-gradient-dir:hover {
  background: #f1f3f4;
}

.bg-gradient-dir.active {
  background: rgba(113, 6, 238, 0.08);
  border-color: #7106ee;
  color: #7106ee;
}

.bg-gradient-preset-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.bg-gradient-preset {
  height: 48px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s ease;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.1);
}

.bg-gradient-preset:hover {
  transform: scale(1.03);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* Image Upload */
.bg-image-upload {
  display: flex;
}

.bg-upload-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px;
  background: #f8f9fa;
  border: 2px dashed #dadce0;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: #5f6368;
  cursor: pointer;
  transition: all 0.15s ease;
}

.bg-upload-btn:hover {
  background: #f1f3f4;
  border-color: #7106ee;
  color: #7106ee;
}

.bg-upload-btn i {
  font-size: 20px;
}

.bg-image-url {
  display: flex;
  gap: 8px;
}

.bg-url-input {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid #e1e5e9;
  border-radius: 6px;
  font-size: 13px;
}

.bg-url-input:focus {
  outline: none;
  border-color: #7106ee;
}

.bg-url-apply {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  background: #7106ee;
  border: none;
  border-radius: 6px;
  color: white;
  cursor: pointer;
  transition: all 0.15s ease;
}

.bg-url-apply:hover {
  background: #5c05c1;
}

.bg-opacity-control {
  display: flex;
  align-items: center;
  gap: 12px;
}

.bg-opacity-slider {
  flex: 1;
}

.bg-opacity-value {
  font-size: 13px;
  font-weight: 600;
  color: #7106ee;
  min-width: 45px;
  text-align: right;
}

.bg-image-preview {
  position: relative;
  margin-top: 16px;
  border-radius: 8px;
  overflow: hidden;
}

.bg-image-preview img {
  width: 100%;
  height: 100px;
  object-fit: cover;
  display: block;
}

.bg-image-remove {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.6);
  border: none;
  border-radius: 6px;
  color: white;
  cursor: pointer;
  transition: all 0.15s ease;
}

.bg-image-remove:hover {
  background: #dc2626;
}

/* === THEME COLORS PANEL === */
.tc-section {
  margin-bottom: 20px;
}

.tc-section:last-child {
  margin-bottom: 0;
}

.tc-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: #5f6368;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 10px;
}

.tc-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.tc-section-header .tc-label {
  margin-bottom: 0;
}

/* Theme Selector */
.tc-theme-selector {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.tc-theme-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 10px 8px;
  background: #f8f9fa;
  border: 2px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.tc-theme-btn:hover {
  background: #f1f3f4;
  border-color: #dadce0;
}

.tc-theme-btn.active {
  background: rgba(113, 6, 238, 0.08);
  border-color: #7106ee;
}

.tc-theme-preview {
  display: flex;
  gap: 2px;
  width: 100%;
  height: 16px;
  border-radius: 4px;
  overflow: hidden;
}

.tc-theme-preview span {
  flex: 1;
  height: 100%;
}

.tc-theme-name {
  font-size: 11px;
  font-weight: 500;
  color: #5f6368;
}

.tc-theme-btn.active .tc-theme-name {
  color: #7106ee;
}

/* Palette Grid */
.tc-palette-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
}

/* Color Swatches */
.tc-color-swatch {
  position: relative;
  aspect-ratio: 1;
  border-radius: 8px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.1);
}

.tc-color-swatch:hover {
  transform: scale(1.1);
  border-color: #7106ee;
  z-index: 1;
}

.tc-color-swatch.active {
  border-color: #7106ee;
  box-shadow: 0 0 0 2px rgba(113, 6, 238, 0.3);
}

.tc-color-swatch.small {
  border-radius: 6px;
}

.tc-color-swatch.custom {
  position: relative;
}

.tc-color-swatch.custom:hover .tc-remove-color {
  opacity: 1;
}

.tc-remove-color {
  position: absolute;
  top: -6px;
  right: -6px;
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #dc2626;
  border: 2px solid white;
  border-radius: 50%;
  color: white;
  font-size: 8px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s ease;
}

.tc-remove-color:hover {
  background: #b91c1c;
}

/* Custom Colors */
.tc-custom-colors {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 6px;
  min-height: 36px;
  align-items: center;
  margin-bottom: 12px;
}

.tc-empty-text {
  grid-column: 1 / -1;
  font-size: 12px;
  color: #9aa0a6;
  font-style: italic;
  text-align: center;
  padding: 8px;
}

.tc-add-btn {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f8f9fa;
  border: 2px dashed #dadce0;
  border-radius: 6px;
  color: #5f6368;
  cursor: pointer;
  transition: all 0.15s ease;
}

.tc-add-btn:hover {
  background: #f1f3f4;
  border-color: #7106ee;
  color: #7106ee;
}

/* Color Picker Row */
.tc-color-picker-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.tc-color-picker-wrapper {
  position: relative;
  width: 36px;
  height: 36px;
}

.tc-color-preview {
  width: 100%;
  height: 100%;
  border-radius: 8px;
  border: 2px solid #e1e5e9;
  cursor: pointer;
  transition: all 0.15s ease;
}

.tc-color-preview:hover {
  border-color: #7106ee;
}

.tc-color-picker-wrapper input[type="color"] {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.tc-hex-input {
  flex: 1;
  padding: 9px 12px;
  border: 1px solid #e1e5e9;
  border-radius: 6px;
  font-size: 13px;
  font-family: monospace;
  color: #202124;
  text-transform: uppercase;
}

.tc-hex-input:focus {
  outline: none;
  border-color: #7106ee;
}

.tc-apply-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #7106ee;
  border: none;
  border-radius: 6px;
  color: white;
  cursor: pointer;
  transition: all 0.15s ease;
}

.tc-apply-btn:hover {
  background: #5c05c1;
}

/* Recent Colors */
.tc-recent-colors {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 6px;
  min-height: 28px;
  align-items: center;
}

/* Quick Options */
.tc-quick-options {
  display: flex;
  gap: 8px;
}

.tc-option-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 12px 8px;
  background: #f8f9fa;
  border: 2px solid transparent;
  border-radius: 8px;
  font-size: 11px;
  font-weight: 500;
  color: #5f6368;
  cursor: pointer;
  transition: all 0.15s ease;
}

.tc-option-btn:hover {
  background: #f1f3f4;
  border-color: #dadce0;
}

.tc-option-btn:active {
  background: rgba(113, 6, 238, 0.08);
  border-color: #7106ee;
}

.tc-transparent-icon {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  background: 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;
  background-position: 0 0, 0 4px, 4px -4px, -4px 0px;
  border: 1px solid #e1e5e9;
}

.tc-white-icon {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  background: #ffffff;
  border: 1px solid #e1e5e9;
}

.tc-black-icon {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  background: #000000;
  border: 1px solid #e1e5e9;
}

/* === SLIDE HEIGHT PANEL === */
.sh-section {
  margin-bottom: 20px;
}

.sh-section:last-child {
  margin-bottom: 0;
}

.sh-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: #5f6368;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 10px;
}

/* Height Presets */
.sh-presets-grid {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sh-preset {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: #f8f9fa;
  border: 2px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.sh-preset:hover {
  background: #f1f3f4;
  border-color: #dadce0;
}

.sh-preset.active {
  background: rgba(113, 6, 238, 0.08);
  border-color: #7106ee;
}

.sh-preset-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  border-radius: 8px;
  color: #5f6368;
  font-size: 14px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.sh-preset.active .sh-preset-icon {
  background: #7106ee;
  color: white;
}

.sh-preset-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sh-preset-label {
  font-size: 13px;
  font-weight: 600;
  color: #202124;
}

.sh-preset-desc {
  font-size: 11px;
  color: #5f6368;
}

.sh-preset-check {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #7106ee;
  border-radius: 50%;
  color: white;
  font-size: 10px;
  opacity: 0;
  transform: scale(0.8);
  transition: all 0.15s ease;
}

.sh-preset.active .sh-preset-check {
  opacity: 1;
  transform: scale(1);
}

/* Custom Height Section */
.sh-custom-section {
  display: none;
  padding-top: 16px;
  border-top: 1px solid #e1e5e9;
}

.sh-custom-section.visible {
  display: block;
}

.sh-custom-input-row {
  display: flex;
  gap: 8px;
}

.sh-input-group {
  flex: 1;
  display: flex;
  align-items: center;
  background: #f8f9fa;
  border: 1px solid #e1e5e9;
  border-radius: 6px;
  overflow: hidden;
}

.sh-height-input {
  flex: 1;
  padding: 10px 12px;
  border: none;
  background: transparent;
  font-size: 14px;
  font-weight: 500;
  color: #202124;
}

.sh-height-input:focus {
  outline: none;
}

.sh-input-unit {
  padding: 10px 12px;
  background: #e8eaed;
  font-size: 12px;
  font-weight: 500;
  color: #5f6368;
}

.sh-apply-btn {
  padding: 10px 20px;
  background: #7106ee;
  border: none;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  color: white;
  cursor: pointer;
  transition: all 0.15s ease;
}

.sh-apply-btn:hover {
  background: #5c05c1;
}

/* Aspect Ratio Options */
.sh-aspect-options {
  display: flex;
  gap: 8px;
}

.sh-aspect-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 12px 8px;
  background: #f8f9fa;
  border: 2px solid transparent;
  border-radius: 8px;
  font-size: 11px;
  font-weight: 500;
  color: #5f6368;
  cursor: pointer;
  transition: all 0.15s ease;
}

.sh-aspect-btn:hover {
  background: #f1f3f4;
  border-color: #dadce0;
}

.sh-aspect-btn.active {
  background: rgba(113, 6, 238, 0.08);
  border-color: #7106ee;
  color: #7106ee;
}

.sh-aspect-preview {
  background: #5f6368;
  border-radius: 2px;
}

.sh-aspect-btn.active .sh-aspect-preview {
  background: #7106ee;
}

.sh-aspect-preview.ratio-16-9 {
  width: 32px;
  height: 18px;
}

.sh-aspect-preview.ratio-4-3 {
  width: 28px;
  height: 21px;
}

.sh-aspect-preview.ratio-1-1 {
  width: 24px;
  height: 24px;
}

.sh-aspect-preview.ratio-9-16 {
  width: 18px;
  height: 32px;
}

/* Lock Aspect Ratio */
.sh-lock-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px;
  background: #f8f9fa;
  border-radius: 8px;
}

.sh-lock-info {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 500;
  color: #5f6368;
}

.sh-lock-info i {
  color: #7106ee;
}

.sh-toggle {
  position: relative;
  width: 44px;
  height: 24px;
}

.sh-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.sh-toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: #dadce0;
  border-radius: 12px;
  transition: all 0.2s ease;
}

.sh-toggle-slider::before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background: white;
  border-radius: 50%;
  transition: all 0.2s ease;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.sh-toggle input:checked + .sh-toggle-slider {
  background: #7106ee;
}

.sh-toggle input:checked + .sh-toggle-slider::before {
  transform: translateX(20px);
}

/* Dimensions Display */
.sh-dimensions-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 16px;
  background: linear-gradient(135deg, #f8f9fa, #e8eaed);
  border-radius: 8px;
}

.sh-dim-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.sh-dim-label {
  font-size: 10px;
  font-weight: 600;
  color: #5f6368;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.sh-dim-value {
  font-size: 18px;
  font-weight: 700;
  color: #202124;
  font-family: monospace;
}

.sh-dim-separator {
  font-size: 20px;
  color: #5f6368;
  font-weight: 300;
}

/* === CANVAS CONTAINER - FINAL NORMALIZED VERSION === */
.canvas-container {
  flex: 1;
  position: relative;
  display: flex;
  align-items: flex-start; /* Position slide at top like StorydDoc */
  justify-content: center; /* Center slide horizontally */
  padding: var(--decka-canvas-padding); /* Minimal StorydDoc-style padding */
  min-height: 0;
  overflow: hidden;
  background: var(--decka-canvas-bg);
}

.canvas-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: flex-start; /* Position slide at top */
  justify-content: center; /* Center slide horizontally */
  padding: 8px 16px 24px 16px; /* Less top, more bottom padding */
  box-sizing: border-box;
}

.slide-canvas-container {
  position: relative;
  background: var(--decka-bg-primary);
  border-radius: var(--decka-radius-lg);
  box-shadow: var(--decka-shadow-xl);
  overflow: hidden;
  transition: all var(--decka-transition-normal);
}

.slide-canvas-container:hover {
  box-shadow: var(--decka-shadow-xl), 0 0 0 1px rgba(113, 6, 238, 0.1);
}

#main-canvas {
  display: block;
  cursor: crosshair;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

/* === RIGHT SIDEBAR === */
.content-sidebar {
  position: fixed;
  top: var(--decka-header-height);
  right: 0;
  width: 48px; /* Match StorydDoc compact sidebar */
  height: calc(100vh - var(--decka-header-height));
  background: linear-gradient(180deg, var(--decka-primary) 0%, var(--decka-primary-dark) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--decka-space-6) var(--decka-space-2); /* Reduce padding for compact design */
  gap: var(--decka-space-2); /* Reduce gap for compact design */
  z-index: 1000;
  box-shadow: var(--decka-shadow-md);
}

.tool-category-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px; /* More compact StorydDoc-style */
  height: 28px; /* More compact StorydDoc-style */
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--decka-radius-sm); /* Smaller radius for compact feel */
  transition: all var(--decka-transition-fast);
  cursor: pointer;
  font-size: 11px; /* Slightly smaller font */
}

.tool-category-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border-color: rgba(255, 255, 255, 0.4);
}

.tool-category-btn.active {
  background: white;
  color: var(--decka-primary);
  border-color: white;
}

/* === RESPONSIVE DESIGN - SIMPLIFIED === */
@media (max-width: 768px) {
  .slide-navigator-panel {
    position: fixed;
    left: 0;
    top: var(--decka-header-height);
    bottom: 0;
    width: 100%;
    max-width: 280px;
    transform: translateX(-100%);
    transition: transform var(--decka-transition-normal);
    z-index: 1000;
    background: var(--decka-bg-primary);
    border-right: 1px solid var(--decka-border-color);
    box-shadow: var(--decka-shadow-lg);
  }
  
  .slide-navigator-panel.mobile-open {
    transform: translateX(0);
  }
  
  .canvas-area {
    position: relative;
    left: 0;
    right: 0;
    top: auto;
    height: auto;
  }
  
  .content-sidebar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    top: auto;
    width: 100%;
    height: 60px;
    flex-direction: row;
    justify-content: center;
    padding: var(--decka-space-4) var(--decka-space-8);
    gap: var(--decka-space-6);
  }
  
  .tool-category-btn {
    width: 40px;
    height: 40px;
    font-size: 16px;
  }
  
  .canvas-container {
    padding: var(--decka-space-4);
  }
  
  .canvas-wrapper {
    padding: var(--decka-space-4);
  }
}

/* === BUTTON SYSTEM === */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--decka-space-2);
  padding: var(--decka-space-6) var(--decka-space-12);
  font-size: var(--decka-font-size-sm);
  font-weight: var(--decka-font-weight-medium);
  line-height: 1;
  text-decoration: none;
  background: linear-gradient(135deg, var(--decka-primary) 0%, var(--decka-primary-light) 100%);
  color: white;
  border: none;
  border-radius: var(--decka-radius-md);
  box-shadow: var(--decka-shadow-sm);
  transition: all var(--decka-transition-normal);
  cursor: pointer;
  white-space: nowrap;
  min-height: 36px;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--decka-primary-dark) 0%, var(--decka-primary) 100%);
  box-shadow: var(--decka-shadow-md);
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--decka-space-2);
  padding: var(--decka-space-6) var(--decka-space-12);
  font-size: var(--decka-font-size-sm);
  font-weight: var(--decka-font-weight-medium);
  line-height: 1;
  text-decoration: none;
  background: var(--decka-bg-primary);
  color: var(--decka-text-primary);
  border: 1px solid var(--decka-border-color);
  border-radius: var(--decka-radius-md);
  box-shadow: var(--decka-shadow-sm);
  transition: all var(--decka-transition-normal);
  cursor: pointer;
  white-space: nowrap;
  min-height: 36px;
}

.btn-secondary:hover {
  background: var(--decka-bg-secondary);
  border-color: var(--decka-border-dark);
  box-shadow: var(--decka-shadow-md);
}

.btn-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: transparent;
  color: var(--decka-text-secondary);
  border: none;
  border-radius: var(--decka-radius-sm);
  transition: all var(--decka-transition-fast);
  cursor: pointer;
}

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

/* === UTILITY CLASSES === */
.d-none { display: none !important; }
.d-flex { display: flex !important; }
.d-block { display: block !important; }

.flex-column { flex-direction: column !important; }
.flex-row { flex-direction: row !important; }

.justify-content-center { justify-content: center !important; }
.justify-content-between { justify-content: space-between !important; }

.align-items-center { align-items: center !important; }
.align-items-start { align-items: flex-start !important; }

.text-center { text-align: center !important; }
.text-primary { color: var(--decka-primary) !important; }
.text-muted { color: var(--decka-text-muted) !important; }

.w-100 { width: 100% !important; }
.h-100 { height: 100% !important; }

/* === LOADING STATES === */
.spinner-border {
  display: inline-block;
  width: 2rem;
  height: 2rem;
  vertical-align: -0.125em;
  border: 0.25em solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spinner-border 0.75s linear infinite;
}

.spinner-border-sm {
  width: 1rem;
  height: 1rem;
  border-width: 0.125em;
}

@keyframes spinner-border {
  to {
    transform: rotate(360deg);
  }
}

/* === THEME SUPPORT === */
[data-theme="dark"] {
  --decka-bg-primary: #1a1a1a;
  --decka-bg-secondary: #2d2d2d;
  --decka-bg-tertiary: #404040;
  --decka-text-primary: #ffffff;
  --decka-text-secondary: #b3b3b3;
  --decka-text-muted: #808080;
  --decka-border-color: #404040;
  --decka-border-light: #333333;
  --decka-border-dark: #555555;
  --decka-canvas-bg: #2d2d2d;
  --decka-canvas-border: #404040;
}

[data-theme="dark"] #main-canvas {
  background: #ffffff;
}

/* === ACCESSIBILITY === */
*:focus-visible {
  outline: 2px solid var(--decka-primary);
  outline-offset: 2px;
}

/* === PRINT STYLES === */
@media print {
  .slide-navigator-panel,
  .content-sidebar,
  .element-toolbar {
    display: none !important;
  }
  
  .canvas-area {
    position: static;
    width: 100%;
    height: auto;
  }
  
  .canvas-container {
    padding: 0;
    box-shadow: none;
    border: 1px solid #000;
  }
}

/* === PERFORMANCE OPTIMIZATIONS === */
.canvas-container,
.slide-canvas-container,
#main-canvas {
  transform: translateZ(0); /* GPU acceleration */
  will-change: transform;
}

/* === HIGH CONTRAST SUPPORT === */
@media (prefers-contrast: high) {
  :root {
    --decka-border-color: #000000;
    --decka-shadow-sm: none;
    --decka-shadow-md: none;
    --decka-shadow-lg: none;
    --decka-shadow-xl: none;
  }
}

/* === REDUCED MOTION SUPPORT === */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* === TEMPLATE CUSTOMIZATION MODAL === */
#template-customization-modal .modal-content {
  border: none;
  border-radius: 16px;
  box-shadow: var(--decka-shadow-xl);
}

#template-customization-modal .modal-header {
  background: linear-gradient(135deg, var(--decka-primary) 0%, var(--decka-primary-dark) 100%);
  color: white;
  border-radius: 16px 16px 0 0;
  border: none;
  padding: 1.25rem 1.5rem;
}

#template-customization-modal .modal-header .btn-close {
  filter: brightness(0) invert(1);
  opacity: 0.8;
}

#template-customization-modal .modal-header .btn-close:hover {
  opacity: 1;
}

#template-customization-modal .modal-body {
  padding: 1.5rem;
  max-height: 65vh;
  overflow-y: auto;
}

#template-customization-modal .modal-footer {
  border-top: 1px solid var(--decka-border-light);
  padding: 1rem 1.5rem;
}

/* Customization Sections */
.customization-section {
  background: var(--decka-bg-secondary);
  padding: 1.25rem;
  border-radius: 12px;
  border: 1px solid var(--decka-border-light);
}

.customization-section .form-label {
  margin-bottom: 0.75rem;
  color: var(--decka-text-primary);
}

.customization-section .form-control {
  border-radius: 8px;
  border: 1px solid var(--decka-border-color);
  padding: 0.75rem 1rem;
}

.customization-section .form-control:focus {
  border-color: var(--decka-primary);
  box-shadow: 0 0 0 3px rgba(113, 6, 238, 0.15);
}

/* Color Scheme Options */
.color-scheme-options {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.color-scheme-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.75rem;
  border: 2px solid var(--decka-border-light);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  background: white;
  min-width: 80px;
}

.color-scheme-option:hover {
  border-color: var(--decka-primary-light);
  transform: translateY(-2px);
}

.color-scheme-option.active {
  border-color: var(--decka-primary);
  background: var(--decka-primary-bg);
  box-shadow: 0 0 0 3px rgba(113, 6, 238, 0.15);
}

.color-preview {
  display: flex;
  gap: 4px;
  margin-bottom: 0.5rem;
}

.color-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid rgba(0, 0, 0, 0.1);
  box-shadow: var(--decka-shadow-sm);
}

.scheme-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--decka-text-secondary);
}

.color-scheme-option.active .scheme-label {
  color: var(--decka-primary);
}

/* Custom Color Picker */
.custom-color-picker {
  width: 24px;
  height: 24px;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  padding: 0;
  -webkit-appearance: none;
}

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

.custom-color-picker::-webkit-color-swatch {
  border-radius: 50%;
  border: 2px solid rgba(0, 0, 0, 0.1);
}

/* Slide Selection Grid */
.slide-selection-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 0.75rem;
  max-height: 280px;
  overflow-y: auto;
  padding: 0.5rem;
  background: white;
  border-radius: 8px;
  border: 1px solid var(--decka-border-light);
}

.slide-selection-item {
  position: relative;
  border: 2px solid var(--decka-border-light);
  border-radius: 8px;
  cursor: pointer;
  overflow: hidden;
  transition: all 0.2s ease;
  background: white;
}

.slide-selection-item:hover {
  border-color: var(--decka-primary-light);
  transform: translateY(-2px);
}

.slide-selection-item.selected {
  border-color: var(--decka-primary);
  box-shadow: 0 0 0 2px rgba(113, 6, 238, 0.2);
}

.slide-selection-checkbox {
  position: absolute;
  top: 6px;
  left: 6px;
  z-index: 2;
}

.slide-selection-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--decka-primary);
}

.slide-selection-preview {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--decka-gray-100);
}

.slide-selection-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.2s ease;
}

.slide-selection-item:hover .slide-selection-preview img {
  transform: scale(1.05);
}

.slide-selection-info {
  padding: 0.5rem;
  text-align: center;
  background: var(--decka-bg-secondary);
  border-top: 1px solid var(--decka-border-light);
}

.slide-selection-info .slide-number {
  display: inline-block;
  background: var(--decka-primary);
  color: white;
  font-size: 0.65rem;
  font-weight: 600;
  padding: 0.1rem 0.4rem;
  border-radius: 10px;
  margin-right: 4px;
}

.slide-selection-info .slide-title {
  font-size: 0.7rem;
  color: var(--decka-text-secondary);
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Apply Button */
#apply-customized-template {
  background: linear-gradient(135deg, var(--decka-primary) 0%, var(--decka-primary-dark) 100%);
  border: none;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  border-radius: 8px;
  transition: all 0.2s ease;
}

#apply-customized-template:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(113, 6, 238, 0.3);
}

/* Responsive */
@media (max-width: 768px) {
  .color-scheme-options {
    justify-content: center;
  }

  .color-scheme-option {
    min-width: 70px;
    padding: 0.5rem;
  }

  .slide-selection-grid {
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  }
}

/* ============================================
   PROPERTIES PANEL (slide-in from left)
   Shown by UIManager.showPropertiesPanel()
   ============================================ */
.properties-panel {
  position: fixed;
  top: var(--decka-header-height);
  left: 0;
  width: 320px;
  height: calc(100vh - var(--decka-header-height));
  background: var(--decka-bg-primary);
  border: 1px solid var(--decka-border-light);
  border-left: none;
  border-radius: 0 var(--decka-radius-lg) var(--decka-radius-lg) 0;
  box-shadow: var(--decka-shadow-xl);
  flex-direction: column;
  z-index: 1000;
  transform: translateX(-100%);
  transition: transform var(--decka-transition-normal);
  overflow: hidden;
}

.properties-panel.active {
  transform: translateX(0);
}

.properties-panel .panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--decka-border-light);
  flex-shrink: 0;
}

.properties-panel .panel-title {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 600;
}

.properties-panel .btn-panel-action {
  background: none;
  border: none;
  color: #6b7280;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
}

.properties-panel .btn-panel-action:hover {
  background: #f3f4f6;
  color: #111827;
}

.properties-panel .panel-content {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
}

.properties-panel .properties-section h6 {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #6b7280;
  margin: 0 0 12px;
}

.properties-panel .property-group {
  margin-bottom: 14px;
}

.properties-panel .property-group label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: #374151;
  margin-bottom: 6px;
}

.properties-panel .property-row {
  display: flex;
  gap: 8px;
}

.properties-panel .property-input {
  width: 100%;
  font-size: 0.8125rem;
  padding: 6px 8px;
  border: 1px solid var(--decka-border-light);
  border-radius: 6px;
}

.properties-panel .no-selection-state {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  height: 100%;
}

.properties-panel .no-selection-icon {
  font-size: 1.5rem;
  color: #9ca3af;
  margin-bottom: 8px;
}

/* Block editing while template data is loading (see slide-manager showSkeletonLoading) */
body.template-loading .sidebar-tools,
body.template-loading .sidebar-content,
body.template-loading .canvas-container {
  pointer-events: none;
  opacity: 0.6;
}

.canvas-state-overlay {
  position: absolute;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.85);
}

/* ============================================
   Canvas Context Menu
   ============================================ */
.canvas-context-menu {
  position: fixed;
  z-index: 10000;
  min-width: 220px;
  background: var(--decka-white);
  border: 1px solid var(--decka-gray-200);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  padding: 6px 0;
  font-size: 13px;
  color: var(--decka-text-primary);
  user-select: none;
}

.context-menu-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 14px;
  cursor: pointer;
  white-space: nowrap;
}

.context-menu-item:hover {
  background: var(--decka-primary-bg);
}

.context-menu-item.disabled {
  opacity: 0.4;
  cursor: default;
}

.context-menu-item.disabled:hover {
  background: transparent;
}

.context-menu-item > i.fas {
  width: 16px;
  text-align: center;
  color: var(--decka-gray-500);
  font-size: 12px;
}

.context-menu-item:hover > i.fas {
  color: var(--decka-primary);
}

.context-menu-label {
  flex: 1;
}

.context-menu-shortcut {
  margin-left: 24px;
  color: var(--decka-gray-500);
  font-size: 11px;
}

.context-menu-divider {
  height: 1px;
  margin: 5px 0;
  background: var(--decka-gray-200);
}

.context-menu-caret {
  font-size: 10px !important;
  color: var(--decka-gray-400);
}

/* Submenu flyout */
.canvas-context-submenu {
  display: none;
  position: absolute;
  left: 100%;
  top: -7px;
  min-width: 210px;
  background: var(--decka-white);
  border: 1px solid var(--decka-gray-200);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  padding: 6px 0;
}

.context-menu-item.has-submenu:hover > .canvas-context-submenu {
  display: block;
}

/* ============================================
   Tooltips + Shortcuts Modal
   ============================================ */
.decka-tooltip {
  position: fixed;
  z-index: 10001;
  max-width: 280px;
  padding: 5px 10px;
  background: var(--decka-gray-800);
  color: var(--decka-white);
  font-size: 12px;
  line-height: 1.4;
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
  pointer-events: none;
  white-space: nowrap;
}

.decka-tooltip kbd {
  display: inline-block;
  margin-left: 6px;
  padding: 1px 5px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 4px;
  color: var(--decka-white);
  font-size: 10px;
  font-family: inherit;
}

.shortcuts-modal-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 28px;
}

.shortcuts-section h6 {
  margin: 8px 0 6px;
  color: var(--decka-primary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.shortcuts-table {
  width: 100%;
  font-size: 13px;
}

.shortcuts-table td {
  padding: 3px 0;
  color: var(--decka-text-primary);
}

.shortcuts-keys {
  text-align: right;
  white-space: nowrap;
}

.shortcuts-keys kbd {
  display: inline-block;
  padding: 1px 6px;
  background: var(--decka-gray-100);
  border: 1px solid var(--decka-gray-300);
  border-bottom-width: 2px;
  border-radius: 4px;
  color: var(--decka-gray-700);
  font-size: 11px;
  font-family: inherit;
}

@media (max-width: 576px) {
  .shortcuts-modal-body {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Presenter Notes Bar
   ============================================ */
.presenter-notes-bar {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  display: flex;
  flex-direction: column;
  background: var(--decka-white);
  border-top: 1px solid var(--decka-gray-200);
  box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.06);
}

.presenter-notes-bar .notes-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 6px 14px;
  background: none;
  border: none;
  color: var(--decka-gray-600);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
}

.presenter-notes-bar .notes-toggle:hover {
  color: var(--decka-primary);
}

.presenter-notes-bar .notes-caret {
  margin-left: auto;
  transition: transform 0.2s;
}

.presenter-notes-bar:not(.collapsed) .notes-caret {
  transform: rotate(180deg);
}

.presenter-notes-bar .notes-textarea {
  height: 96px;
  margin: 0 14px 10px;
  padding: 8px 10px;
  border: 1px solid var(--decka-gray-200);
  border-radius: 6px;
  font-size: 13px;
  line-height: 1.5;
  resize: none;
  outline: none;
}

.presenter-notes-bar .notes-textarea:focus {
  border-color: var(--decka-primary);
}

.presenter-notes-bar.collapsed .notes-textarea {
  display: none;
}

/* ===== Version History Modal ===== */
.version-history-body {
  padding: 16px 20px;
}

.version-snapshot-row {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.version-snapshot-row input {
  flex: 1;
}

.version-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 420px;
  overflow-y: auto;
}

.version-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid var(--decka-gray-200);
  border-radius: 8px;
  background: var(--decka-white, #fff);
}

.version-item-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--decka-gray-800, #333);
}

.version-item-meta {
  font-size: 12px;
  color: var(--decka-gray-500, #888);
  margin-top: 2px;
}

.version-empty {
  text-align: center;
  padding: 32px 16px;
  color: var(--decka-gray-500, #888);
}

.version-empty i {
  font-size: 28px;
  margin-bottom: 10px;
  display: block;
}

.version-empty p {
  font-size: 13px;
  margin: 0;
}

.version-loading,
.version-error {
  padding: 20px;
  text-align: center;
  font-size: 13px;
  color: var(--decka-gray-500, #888);
}

.version-error {
  color: #c0392b;
}

/* ===== Comments Panel ===== */
.comments-panel {
  display: flex;
  flex-direction: column;
  height: calc(100% - 60px);
  padding: 0 14px 14px;
}

.comments-slide-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--decka-gray-500, #888);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 8px 0;
}

.comments-list {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 120px;
}

.comment-thread {
  border: 1px solid var(--decka-gray-200);
  border-radius: 8px;
  padding: 10px 12px;
  background: var(--decka-white, #fff);
}

.comment-thread.resolved {
  opacity: 0.6;
}

.comment-thread.resolved .comment-text {
  text-decoration: line-through;
}

.comment-item + .comment-item {
  margin-top: 8px;
}

.comment-reply {
  margin-left: 16px;
  padding-left: 10px;
  border-left: 2px solid var(--decka-gray-200);
}

.comment-meta {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 11px;
}

.comment-author {
  font-weight: 600;
  color: var(--decka-gray-800, #333);
}

.comment-time {
  color: var(--decka-gray-500, #999);
}

.comment-text {
  font-size: 13px;
  line-height: 1.45;
  margin: 4px 0;
  white-space: pre-wrap;
  word-break: break-word;
}

.comment-actions {
  display: flex;
  gap: 10px;
}

.comment-actions button {
  border: none;
  background: none;
  padding: 0;
  font-size: 11px;
  color: var(--decka-primary, #6366f1);
  cursor: pointer;
}

.comment-actions button:hover {
  text-decoration: underline;
}

.comments-composer {
  border-top: 1px solid var(--decka-gray-200);
  padding-top: 10px;
  margin-top: 10px;
}

.comments-reply-hint {
  font-size: 11px;
  color: var(--decka-gray-500, #888);
  margin-bottom: 6px;
}

.comments-reply-cancel {
  border: none;
  background: none;
  padding: 0;
  font-size: 11px;
  color: var(--decka-primary, #6366f1);
  cursor: pointer;
}

.comments-input {
  width: 100%;
  border: 1px solid var(--decka-gray-200);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 13px;
  resize: none;
  outline: none;
  margin-bottom: 8px;
}

.comments-input:focus {
  border-color: var(--decka-primary);
}

.comments-send {
  width: 100%;
}