/* 
  '도서출판독자' E-Book Creator - Main Application UI/UX Stylesheet
  Implements a premium, modern dark/slate themed editor dashboard with high-end aesthetics.
*/

:root {
  /* Color System - Warm Charcoal & Luxurious Off-white / Cream with Hermes Orange Accent */
  --bg-primary: #141211;     /* deep warm dark, comfortable for eyes */
  --bg-secondary: #1b1917;   /* warm charcoal dark */
  --bg-tertiary: #262220;    /* warm medium dark */
  --bg-panel: #1e1b1a;       /* sidebar panels background */
  
  --text-primary: #ede5d8;   /* warm cream off-white, reduces eye strain */
  --text-secondary: #b5a897; /* muted warm cream */
  --text-muted: #7e7161;     /* soft brown-grey */
  
  --accent-color: #e35b15;   /* Hermes Orange signature color */
  --accent-hover: #c94b0d;   /* darker Hermes orange for hover */
  --accent-light: rgba(227, 91, 21, 0.15);
  
  --success-color: #059669;
  --warning-color: #d97706;
  --danger-color: #dc2626;
  --danger-hover: #b91c1c;
  
  --border-color: #2d2926;   /* warm border */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.15);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
  
  --font-primary: 'Inter', 'Noto Sans KR', sans-serif;
  --font-title: 'Outfit', 'Inter', 'Noto Sans KR', sans-serif;
  --font-serif: 'Nanum Myeongjo', serif;
  
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: 15px;
  line-height: 1.5;
  overflow-x: hidden;
  height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-title);
  font-weight: 600;
  color: var(--text-primary);
}

a {
  color: var(--accent-color);
  text-decoration: none;
  transition: var(--transition-fast);
}

a:hover {
  color: var(--accent-hover);
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

/* Scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Views display switcher */
.view-active {
  display: flex !important;
  flex-direction: column;
  min-height: 100vh;
}
.view-hidden {
  display: none !important;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--border-radius-md);
  border: none;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-primary {
  background-color: var(--accent-color);
  color: white;
}
.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(227, 91, 21, 0.4);
}

.btn-secondary {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}
.btn-secondary:hover {
  background-color: var(--border-color);
}

.btn-accent {
  background-color: #c59b27;
  color: white;
}
.btn-accent:hover {
  background-color: #a8811b;
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(197, 155, 39, 0.4);
}

.btn-danger {
  background-color: var(--danger-color);
  color: white;
}
.btn-danger:hover {
  background-color: var(--danger-hover);
}

.btn-small {
  padding: 6px 12px;
  font-size: 13px;
  border-radius: var(--border-radius-sm);
}

.btn-large {
  padding: 12px 24px;
  font-size: 16px;
}

.btn-icon-text {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition-fast);
}
.btn-icon-text:hover {
  color: var(--text-primary);
}

/* Divider vertical */
.divider-v {
  width: 1px;
  height: 24px;
  background-color: var(--border-color);
  margin: 0 15px;
}

/* ==========================================================================
   1. DASHBOARD VIEW STYLING
   ========================================================================== */
.dash-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.dash-brand {
  display: flex;
  align-items: center;
  gap: 15px;
}
.brand-icon {
  font-size: 32px;
  color: var(--accent-color);
}
.dash-brand h1 {
  font-size: 20px;
  letter-spacing: 0.5px;
}
.dash-brand p {
  font-size: 12px;
  color: var(--text-secondary);
}

.dash-actions {
  display: flex;
  gap: 15px;
  align-items: center;
}

.dash-main {
  flex: 1;
  padding: 40px;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
}

.dash-section {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-header h2 {
  font-size: 20px;
  font-weight: 500;
}
.book-count-badge {
  background-color: var(--accent-light);
  color: var(--accent-color);
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 600;
}

/* Grid layout for book cards - Optimized for Max 2 projects in Beta version */
.books-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  width: 100%;
  gap: 30px;
  margin: 0;
}

@media (max-width: 768px) {
  .books-grid {
    grid-template-columns: 1fr;
  }
  
  .book-card {
    display: flex !important;
    flex-direction: column !important;
    height: auto !important;
  }
  
  .book-card-cover-wrap {
    width: 100% !important;
    height: 220px !important;
    border-right: none !important;
    border-bottom: 1px solid var(--border-color) !important;
  }
  
  .mini-cover {
    width: 110px !important;
    height: 165px !important;
  }
  
  .book-card-content {
    padding: 18px !important;
  }
  
  .book-card-desc {
    display: none !important;
  }
  
  .book-card-actions {
    padding: 12px 18px !important;
  }
}

.book-card {
  background-color: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
  display: grid;
  grid-template-columns: 160px 1fr;
  grid-template-rows: 1fr auto;
  grid-template-areas: 
    "cover content"
    "cover actions";
  height: 235px;
  position: relative;
}
.book-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(227, 91, 21, 0.4);
}

.book-card-cover-wrap {
  grid-area: cover;
  height: 100%;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  border-right: 1px solid var(--border-color);
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
  cursor: pointer;
}

/* Small cover simulation inside card */
.mini-cover {
  width: 110px;
  height: 165px;
  border-radius: 4px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  padding: 10px;
  box-sizing: border-box;
  text-align: center;
  overflow: hidden;
  position: relative;
}

.mini-cover.has-image {
  padding: 0;
}
.mini-cover-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.mini-cover-title {
  font-family: var(--font-serif);
  font-size: 11px;
  font-weight: bold;
  line-height: 1.3;
  margin-top: 10px;
  word-break: keep-all;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.mini-cover-author {
  font-size: 8px;
  margin-top: auto;
  margin-bottom: 3px;
}


.book-card-content {
  grid-area: content;
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  overflow: hidden;
}

.book-card-title {
  font-size: 17px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 2px;
}
.book-card-author {
  font-size: 13px;
  color: var(--text-secondary);
}
.book-card-desc {
  font-size: 12.5px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 6px 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}
.book-card-meta {
  font-size: 11.5px;
  color: var(--text-muted);
  margin-top: auto;
  padding-top: 6px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
}

.book-card-actions {
  grid-area: actions;
  display: flex;
  padding: 10px 22px;
  background-color: rgba(0, 0, 0, 0.15);
  border-top: 1px solid var(--border-color);
  gap: 10px;
}
.book-card-actions .btn {
  flex: 1;
}
.btn-card-delete {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 5px 10px;
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
}
.btn-card-delete:hover {
  color: var(--danger-color);
  background-color: rgba(220, 38, 38, 0.1);
}

/* Empty State Styling */
.empty-state {
  text-align: center;
  padding: 80px 40px;
  background-color: var(--bg-panel);
  border: 2px dashed var(--border-color);
  border-radius: var(--border-radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
}
.empty-icon {
  font-size: 64px;
  color: var(--text-muted);
}
.empty-state h3 {
  font-size: 18px;
  font-weight: 500;
}
.empty-state p {
  color: var(--text-secondary);
  max-width: 400px;
  margin-bottom: 10px;
}

.dash-footer {
  text-align: center;
  padding: 20px;
  color: var(--text-muted);
  font-size: 12px;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}


/* ==========================================================================
   2. WORKSPACE VIEW STYLING
   ========================================================================== */
.ws-header {
  height: 65px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  z-index: 10;
  box-shadow: var(--shadow-sm);
}

.ws-header-left {
  display: inline-flex;
  align-items: center;
}
.btn-text-only {
  padding: 8px 12px;
  border-radius: var(--border-radius-sm);
}
.btn-text-only:hover {
  background-color: var(--bg-tertiary);
}
.ws-book-title {
  font-size: 16px;
  font-weight: 600;
  max-width: 250px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ws-header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Workspace Main Container */
.ws-container {
  display: grid;
  grid-template-columns: 340px 1fr 420px; /* Sidebar, Editor, Preview (Wider for device mockups) */
  height: calc(100vh - 65px);
  position: relative;
  overflow: hidden;
  transition: grid-template-columns 0.3s ease;
}

.ws-container.preview-closed {
  grid-template-columns: 340px 1fr 48px;
}

/* Sidebars Base */
.ws-sidebar, .ws-preview-panel {
  background-color: var(--bg-panel);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

.ws-preview-panel {
  border-right: none;
  border-left: 1px solid var(--border-color);
  transition: width 0.3s ease;
}

/* Collapsed Preview Panel */
.ws-preview-panel.collapsed {
  width: 48px;
  align-items: center;
  padding-top: 15px;
}

.preview-expanded-content {
  display: flex;
  flex-direction: column;
  height: 100%;
  width: 100%;
  overflow: hidden;
}

.ws-preview-panel.collapsed .preview-expanded-content {
  display: none;
}

.ws-preview-panel.collapsed .preview-collapsed-bar {
  display: flex !important;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.btn-collapsed-open {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 18px;
  cursor: pointer;
  width: 36px;
  height: 36px;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}

.btn-collapsed-open:hover {
  color: var(--accent-color);
  background-color: rgba(255, 255, 255, 0.05);
}

/* Sidebar Tab Buttons */
.ws-tabs {
  display: flex;
  background-color: rgba(0, 0, 0, 0.2);
  border-bottom: 1px solid var(--border-color);
}

.ws-tab-btn {
  flex: 1;
  padding: 12px 5px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.ws-tab-btn:hover {
  color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.02);
}

.ws-tab-btn.active {
  color: var(--accent-color);
  border-bottom-color: var(--accent-color);
  background-color: var(--bg-panel);
}

/* Sidebar Scrollable Content */
.ws-tab-content-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 20px 8px 20px 20px;
}

.ws-tab-pane {
  display: none;
  height: 100%;
}
.ws-tab-pane.active {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow-y: auto;
  gap: 20px;
  padding-right: 12px;
}

.ws-tab-pane h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 5px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Form Styles */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group label .required {
  color: var(--danger-color);
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="date"],
.form-group select,
.form-group textarea {
  width: 100%;
  box-sizing: border-box;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 10px 12px;
  color: var(--text-primary);
  font-size: 14px;
  transition: all var(--transition-fast);
}

.form-group textarea {
  resize: vertical;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 2px var(--accent-light);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.form-row-custom {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.form-row-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
}
.form-row-checkbox input {
  cursor: pointer;
}

/* Preset selector grid (for cover covers) */
.preset-selector-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.preset-btn {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 10px 5px;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
}
.preset-btn:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
}
.preset-btn.active {
  background-color: var(--accent-light);
  border-color: var(--accent-color);
  color: var(--text-primary);
}
.preset-btn i {
  font-size: 16px;
}

/* Background palette selector */
.bg-palette-selector {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
}
.palette-btn {
  aspect-ratio: 1;
  border-radius: var(--border-radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  position: relative;
  transition: transform var(--transition-fast);
  box-shadow: var(--shadow-sm);
}
.palette-btn:hover {
  transform: scale(1.1);
}
.palette-btn.active {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.4);
}

/* File Drop Area */
.file-drop-area {
  border: 2px dashed var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  background-color: rgba(0, 0, 0, 0.1);
  position: relative;
  transition: border-color var(--transition-fast);
}
.file-drop-area:hover {
  border-color: var(--accent-color);
}
.file-drop-area i {
  font-size: 24px;
  color: var(--text-secondary);
}
.file-drop-area span {
  font-size: 13px;
  color: var(--text-secondary);
}
.file-drop-area input[type="file"] {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

/* Accordion for customized styles */
.style-customize-accordion {
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  background-color: var(--bg-secondary);
}
.accordion-header {
  padding: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  user-select: none;
  background-color: rgba(255, 255, 255, 0.02);
}
.accordion-header:hover {
  background-color: rgba(255, 255, 255, 0.05);
}
.accordion-body {
  padding: 15px;
  display: none;
  border-top: 1px solid var(--border-color);
  flex-direction: column;
  gap: 15px;
}
.style-customize-accordion.active .accordion-body {
  display: flex;
}
.style-customize-accordion.active .accordion-header i.fa-chevron-down {
  transform: rotate(180deg);
}

/* Sliders */
.slide-control {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-bottom: 12px;
}
.slide-info {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-secondary);
}
.slide-control input[type="range"] {
  width: 100%;
  accent-color: var(--accent-color);
  background: var(--bg-secondary);
  height: 6px;
  border-radius: 3px;
  outline: none;
}

/* Cover canvas layout render */
.cover-thumbnail-area {
  margin-top: 10px;
}
.cover-canvas-container {
  display: flex;
  justify-content: center;
  background: rgba(0, 0, 0, 0.3);
  padding: 10px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-color);
}
#cover-render-canvas {
  width: 100%;
  max-width: 180px;
  aspect-ratio: 1 / 1.5;
  background-color: white;
  border-radius: 4px;
  box-shadow: var(--shadow-md);
}

/* Interior Theme Card Selector */
.theme-selector-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.theme-card {
  display: flex;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.theme-card:hover {
  border-color: var(--text-muted);
}
.theme-card.active {
  border-color: var(--accent-color);
  background-color: var(--accent-light);
}

.theme-card-preview {
  width: 60px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background-color: rgba(255, 255, 255, 0.05);
  border-right: 1px solid var(--border-color);
  color: var(--text-primary);
}
.theme-card-preview h4 {
  font-size: 24px;
}
.theme-card-preview p {
  font-size: 8px;
  white-space: nowrap;
}

.theme-card-info {
  padding: 10px;
  flex: 1;
}
.theme-card-info h4 {
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 2px;
}
.theme-card-info p {
  font-size: 11px;
  color: var(--text-secondary);
  line-height: 1.3;
}

/* Chapter List Section (Relocated to preview panel, 50% split) */
.preview-chapters-area {
  flex: 1;
  min-height: 0;
  border-bottom: 1px solid var(--border-color);
  padding: 15px 20px;
  display: flex;
  flex-direction: column;
  background-color: rgba(0,0,0,0.15);
}
.chapters-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}
.chapters-header h3 {
  font-size: 13px;
  font-weight: 600;
}
.chapters-list {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.chapter-item {
  display: flex;
  align-items: center;
  padding: 8px 10px;
  border-radius: var(--border-radius-md);
  background-color: var(--bg-panel);
  border: 1px solid var(--border-color);
  cursor: pointer;
  font-size: 13px;
  transition: all var(--transition-fast);
  gap: 8px;
  user-select: none;
}
.chapter-item:hover {
  background-color: var(--bg-tertiary);
}
.chapter-item.active {
  border-color: var(--accent-color);
  background-color: var(--accent-light);
  color: var(--text-primary);
}
.chapter-item-title {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.chapter-item-drag {
  color: var(--text-muted);
  cursor: grab;
}
.chapter-item-controls {
  display: flex;
  gap: 2px;
  opacity: 0.3;
  transition: opacity var(--transition-fast);
}
.chapter-item:hover .chapter-item-controls {
  opacity: 1;
}
.chapter-btn-move {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 2px 4px;
}
.chapter-btn-move:hover {
  color: var(--accent-color);
}
.chapter-btn-delete {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 2px 4px;
  transition: color var(--transition-fast);
}
.chapter-btn-delete:hover {
  color: var(--danger-color);
}

/* ==========================================================================
   3. MIDDLE PANEL: EDITOR STYLING
   ========================================================================== */
.ws-editor-panel {
  display: flex;
  flex-direction: column;
  background-color: var(--bg-secondary);
  height: 100%;
  overflow: hidden;
}

.editor-chapter-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 25px;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-panel);
  gap: 20px;
}
.editor-meta-left {
  display: flex;
  align-items: center;
  gap: 20px;
  flex: 1;
  min-width: 0;
}
.editor-chapter-meta input[type="text"] {
  background: none;
  border: none;
  font-size: 18px;
  font-weight: 500;
  color: var(--text-primary);
  flex: 0 1 450px;
  min-width: 150px;
}
.editor-chapter-meta input[type="text"]:focus {
  outline: none;
}

.chapter-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.lbl-chapter-size {
  font-size: 12px;
  color: var(--text-muted);
}

/* Quill Editor Overrides to Fit Theme */
.editor-main-wrap {
  flex: 1;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* Force Quill to look like our editor theme */
.ql-toolbar.ql-snow {
  background-color: var(--bg-panel) !important;
  border: none !important;
  border-bottom: 1px solid var(--border-color) !important;
  padding: 8px 25px !important;
}
.ql-toolbar.ql-snow .ql-formats {
  margin-right: 10px !important;
}
.ql-toolbar.ql-snow button,
.ql-toolbar.ql-snow .ql-picker {
  margin-right: 2px !important;
}

.ql-container.ql-snow {
  border: none !important;
  flex: 1 !important;
  overflow-y: auto !important;
}

.ql-editor {
  padding: 30px 40px !important;
  font-size: 16px !important;
  line-height: 1.8 !important;
  color: #e2e8f0 !important;
  font-family: var(--font-primary) !important;
}

.ql-editor.ql-blank::before {
  color: var(--text-muted) !important;
  font-style: normal !important;
  left: 40px !important;
  right: 40px !important;
}

/* Styling Quill dropdowns and icons for dark theme */
.ql-snow .ql-stroke {
  stroke: var(--text-secondary) !important;
}
.ql-snow .ql-fill {
  fill: var(--text-secondary) !important;
}
.ql-snow .ql-picker {
  color: var(--text-secondary) !important;
}
.ql-snow .ql-picker-options {
  background-color: var(--bg-panel) !important;
  border-color: var(--border-color) !important;
}
.ql-snow .ql-picker-item:hover, .ql-snow .ql-picker-label:hover {
  color: var(--text-primary) !important;
}
.ql-snow.ql-toolbar button:hover .ql-stroke, 
.ql-snow .ql-toolbar button:hover .ql-stroke, 
.ql-snow.ql-toolbar button.ql-active .ql-stroke, 
.ql-snow .ql-toolbar button.ql-active .ql-stroke {
  stroke: var(--accent-color) !important;
}

.ql-editor blockquote {
  border-left: 4px solid var(--accent-color) !important;
  background-color: rgba(255, 255, 255, 0.02) !important;
  color: var(--text-secondary) !important;
}

.ql-editor pre.ql-syntax {
  background-color: var(--bg-primary) !important;
  border: 1px solid var(--border-color) !important;
  color: #cbd5e0 !important;
  border-radius: var(--border-radius-md) !important;
}

/* Custom tools bar at the bottom of editor */
/* Helpers Dropdown Menu Styles */
.helpers-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  z-index: 1000;
  min-width: 210px;
  background-color: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-lg);
  padding: 10px;
  margin-top: 5px;
  flex-direction: column;
  gap: 8px;
}
.helpers-dropdown-menu.show {
  display: flex !important;
}

/* ==========================================================================
   4. RIGHT PANEL: PREVIEW STYLING
   ========================================================================== */
.ws-preview-panel {
  width: 100%;
}
.preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  border-bottom: 1px solid var(--border-color);
}
.preview-header h3 {
  font-size: 14px;
}

.preview-device-selector {
  display: flex;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 2px;
}
.device-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 5px 8px;
  font-size: 14px;
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
}
.device-btn.active {
  background-color: var(--bg-tertiary);
  color: var(--accent-color);
}

/* Viewport simulation container */
.preview-viewport-container {
  flex: 1;
  min-height: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: var(--bg-primary);
  padding: 10px;
  overflow: hidden;
  position: relative; /* important for absolute scaling */
}

/* Simulated devices with actual resolutions scaled down */
.preview-device-frame {
  background-color: #0d0c0b;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8);
  display: flex;
  justify-content: center;
  align-items: center;
  box-sizing: border-box;
  transition: transform var(--transition-normal);
  overflow: hidden;
  flex-shrink: 0;
  position: absolute; /* allows smooth scaling inside container */
}

/* Phone Simulator - Modern iPhone/Galaxy resolution scaled down */
.device-phone {
  width: 393px;   /* iPhone 15 width */
  height: 852px;  /* iPhone 15 height */
  border-radius: 44px;
  border: 12px solid #2d2926;
  padding: 8px;
}
.device-phone .preview-screen-bezel {
  border-radius: 32px;
}

/* Tablet Simulator - Modern iPad Mini/Air scaled down */
.device-tablet {
  width: 768px;
  height: 1024px;
  border-radius: 24px;
  border: 16px solid #2d2926;
  padding: 4px;
}
.device-tablet .preview-screen-bezel {
  border-radius: 10px;
}

/* A4 Print layout simulator: 794 x 1123 */
.device-print {
  width: 794px;
  height: 1123px;
  border: 2px solid var(--accent-color);
  border-radius: 0;
  padding: 0;
  background: white;
}
.device-print .preview-screen-bezel {
  border-radius: 0;
}

/* Common bezel & screen elements */
.preview-screen-bezel {
  width: 100%;
  height: 100%;
  background-color: white;
  overflow: hidden;
  position: relative;
}

.preview-screen-content {
  width: 100%;
  height: 100%;
  padding: 24px 0;
  box-sizing: border-box;
  background-color: white;
}

.preview-screen-content iframe {
  width: 100%;
  height: 100%;
  border: none;
  background-color: white;
}

/* Pagination bar below previewer */
.preview-footer-pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 20px;
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-panel);
  font-size: 12px;
  color: var(--text-secondary);
}


/* ==========================================================================
   5. REAL-TIME UPAPER VALIDATOR OVERLAYS
   ========================================================================== */
.validator-badge-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  padding: 6px 14px;
  border-radius: 20px;
  cursor: pointer;
  position: relative;
  user-select: none;
  transition: all var(--transition-fast);
}

.validator-badge-wrap:hover {
  background-color: var(--border-color);
  border-color: var(--accent-color);
}

.val-score-badge {
  font-size: 13px;
  font-weight: 700;
  background-color: var(--success-color);
  color: white;
  padding: 1px 8px;
  border-radius: 10px;
}

/* Status colors dynamically assigned */
.val-score-badge.status-warning {
  background-color: var(--warning-color);
}
.val-score-badge.status-error {
  background-color: var(--danger-color);
}

.val-status-text {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-primary);
}

.validator-badge-wrap i {
  color: var(--text-muted);
  font-size: 14px;
}

/* Validator drop down container */
.validator-dropdown {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  width: 320px;
  background-color: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 18px;
  z-index: 99;
  display: none;
  cursor: default;
}

.validator-badge-wrap:hover .validator-dropdown,
.validator-dropdown:hover,
.validator-dropdown.active {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.validator-dropdown h3 {
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 8px;
}

.val-summary {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
}

.val-summary-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.val-summary-item .label {
  color: var(--text-secondary);
  font-size: 11px;
}
.val-summary-item strong {
  font-size: 15px;
}
.val-summary-item span {
  font-weight: 600;
}
.status-pass { color: var(--success-color); }
.status-warn { color: var(--warning-color); }
.status-fail { color: var(--danger-color); }

.val-divider {
  height: 1px;
  background-color: var(--border-color);
}

.validator-dropdown h4 {
  font-size: 12px;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.val-issues-list {
  max-height: 180px;
  overflow-y: auto;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.val-issue-item {
  font-size: 12px;
  padding: 8px 10px;
  border-radius: var(--border-radius-sm);
  display: flex;
  gap: 8px;
  line-height: 1.4;
  align-items: flex-start;
}

.val-issue-item.issue-pass {
  background-color: rgba(5, 150, 105, 0.1);
  color: #a7f3d0;
  border-left: 3px solid var(--success-color);
}
.val-issue-item.issue-warning {
  background-color: rgba(217, 119, 6, 0.1);
  color: #fde68a;
  border-left: 3px solid var(--warning-color);
}
.val-issue-item.issue-error {
  background-color: rgba(220, 38, 38, 0.1);
  color: #fca5a5;
  border-left: 3px solid var(--danger-color);
}

.val-issue-item i {
  font-size: 14px;
  margin-top: 2px;
}
.val-issue-item.issue-pass i { color: var(--success-color); }
.val-issue-item.issue-warning i { color: var(--warning-color); }
.val-issue-item.issue-error i { color: var(--danger-color); }

.val-issue-item.has-dismiss {
  position: relative;
  padding-right: 28px;
}

.dismiss-issue-btn {
  position: absolute;
  right: 6px;
  top: 8px;
  background: none;
  border: none;
  color: inherit;
  opacity: 0.5;
  cursor: pointer;
  font-size: 11px;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: opacity 0.2s, background-color 0.2s, color 0.2s;
}

.dismiss-issue-btn:hover {
  opacity: 1;
  background-color: rgba(255, 255, 255, 0.15);
  color: #fff;
}

/* Custom Checkbox/Toggle Styles */
input[type="checkbox"] {
  width: 15px;
  height: 15px;
  accent-color: var(--accent-color);
}

/* ==========================================================================
   MODAL COMPONENT STYLING
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  animation: fadeIn 0.2s ease-out;
}

.modal-card {
  background-color: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  width: 90%;
  max-width: 440px;
  box-shadow: var(--shadow-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  animation: scaleUp 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  color: var(--text-primary);
}

.modal-header {
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

.modal-header h3 {
  font-size: 16px;
  font-weight: 600;
}

.modal-icon {
  font-size: 20px;
  color: var(--warning-color);
}

.modal-body {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.modal-body strong {
  color: var(--accent-color); /* Hermes Orange */
}

.modal-tip {
  font-size: 12px;
  color: var(--text-muted);
  background: rgba(217, 119, 6, 0.05);
  border-left: 3px solid var(--warning-color);
  padding: 8px 12px;
  border-radius: var(--border-radius-sm);
  margin-top: 5px;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  border-top: 1px solid var(--border-color);
  padding-top: 14px;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes scaleUp {
  from { transform: scale(0.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

/* ==========================================================================
   6. AUTHENTICATION OVERLAY STYLING (Warm Dark Theme)
   ========================================================================== */
.auth-overlay-active {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: #0f0d0c; /* Deep espresso black background */
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow-y: auto;
  padding: 20px;
  box-sizing: border-box;
}

.auth-layout-container {
  display: flex;
  width: 100%;
  max-width: 1000px;
  min-height: 600px;
  background-color: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  animation: scaleUp 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-sizing: border-box;
}

/* Left panel: Onboarding Carousel Showcase */
.auth-promo-panel {
  flex: 1.25;
  padding: 40px;
  background: linear-gradient(135deg, #2b231d 0%, #15110e 100%);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: #f1f5f9;
  box-sizing: border-box;
  position: relative;
}

.promo-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 25px;
}
.promo-brand .brand-icon {
  font-size: 24px;
  color: var(--accent-color);
}
.promo-brand h2 {
  font-size: 19px;
  font-weight: 700;
  color: #fff;
  margin: 0;
}

.promo-slides-wrapper {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.promo-slide {
  display: none;
  flex-direction: column;
  animation: fadeIn 0.4s ease-in-out;
}
.promo-slide.active {
  display: flex;
}

.promo-badge {
  background-color: var(--accent-color);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  align-self: flex-start;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
  text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.promo-slide-title {
  font-size: 22px;
  font-weight: 700;
  color: #ffffff;
  margin: 0 0 8px 0;
  line-height: 1.3;
}

.promo-slide-desc {
  font-size: 13px;
  color: #94a3b8;
  line-height: 1.5;
  margin: 0 0 20px 0;
}

/* Mockup UI Widgets Container */
.mockup-widget-container {
  width: 100%;
  background: rgba(0,0,0,0.25);
  border: 1px solid rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  padding: 20px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 220px;
  margin-bottom: 10px;
}
.mockup-widget-container.flex-row {
  flex-direction: row;
}

/* Stats Slide Widget */
.mockup-stats-card {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.mockup-stats-header {
  font-size: 11px;
  font-weight: bold;
  color: var(--accent-color);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  padding-bottom: 6px;
}
.mockup-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.mockup-stat-box {
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 6px;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  box-sizing: border-box;
}
.m-stat-label {
  font-size: 9px;
  color: #64748b;
}
.m-stat-val {
  font-size: 14px;
  font-weight: bold;
  color: #ffffff;
}
.m-stat-sub {
  font-size: 8px;
  color: #475569;
}
.mockup-stats-progress-wrap {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 4px;
}
.mockup-stats-progress-label {
  font-size: 9px;
  color: #94a3b8;
}
.mockup-stats-progress-bar {
  width: 100%;
  height: 6px;
  background: rgba(255,255,255,0.05);
  border-radius: 3px;
  overflow: hidden;
}
.mockup-stats-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-color) 0%, #f97316 100%);
  border-radius: 3px;
  animation: loadProgress 1.5s ease-out forwards;
}
.mockup-stats-progress-percent {
  font-size: 9px;
  color: #4ade80;
  align-self: flex-end;
  font-weight: 600;
}

/* Overlapping Theme Previews */
.mockup-theme-preview {
  transition: transform var(--transition-normal);
}
.mockup-theme-preview:hover {
  transform: translateY(-5px) scale(1.08) !important;
}

/* Slider Controls styling */
.promo-carousel-controls {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-top: 25px;
  align-self: flex-start;
}
.btn-promo-nav {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #fff;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.btn-promo-nav:hover:not(:disabled) {
  background: var(--accent-color);
  border-color: var(--accent-color);
}
.btn-promo-nav:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.promo-carousel-dots {
  display: flex;
  gap: 8px;
}
.promo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.promo-dot.active {
  background: var(--accent-color);
  width: 18px;
  border-radius: 4px;
}

.promo-footer {
  font-size: 11px;
  color: #475569;
  margin-top: 25px;
}

/* Right card details - Integrates as a Column in Flex container */
.auth-card {
  flex: 1;
  background-color: var(--bg-panel);
  border: none;
  border-radius: 0;
  width: 100%;
  max-width: 100%;
  padding: 40px;
  box-shadow: none;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 20px;
  animation: none;
  box-sizing: border-box;
}

.auth-logo {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.auth-logo .brand-icon {
  font-size: 40px;
  color: var(--accent-color); /* Hermes Orange */
}

.auth-logo h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
}

.auth-logo p {
  font-size: 13px;
  color: var(--text-muted);
}

.auth-warning {
  background-color: rgba(220, 38, 38, 0.1);
  border-left: 3px solid var(--danger-color);
  color: #fca5a5;
  padding: 10px 12px;
  border-radius: var(--border-radius-sm);
  font-size: 12px;
  line-height: 1.5;
  display: flex;
  gap: 8px;
  align-items: flex-start;
}

.auth-warning i {
  font-size: 14px;
  margin-top: 2px;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.auth-switch {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 10px;
}

.btn-text-link {
  background: none;
  border: none;
  color: var(--accent-color);
  cursor: pointer;
  font-weight: 600;
  text-decoration: underline;
  padding: 0;
}

.btn-text-link:hover {
  color: #f07e43;
}

.user-status-indicator {
  font-size: 12px;
  color: var(--text-secondary);
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  padding: 6px 12px;
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  white-space: nowrap;
  box-sizing: border-box;
  height: 29px;
}

/* Auth Card Inputs high readability (White background + Black text) */
.auth-card .form-group input {
  width: 100%;
  box-sizing: border-box;
  background-color: #ffffff !important;
  color: #000000 !important;
  border: 1px solid #c2b8aa !important;
  border-radius: var(--border-radius-md);
  padding: 12px 14px;
  font-size: 15px;
  transition: all var(--transition-fast);
}

.modal-card .form-group input {
  width: 100%;
  box-sizing: border-box;
  background-color: #ffffff !important;
  color: #000000 !important;
  border: 1px solid #c2b8aa !important;
  border-radius: var(--border-radius-md);
  padding: 10px 12px;
  font-size: 14px;
  transition: all var(--transition-fast);
}

.auth-card .form-group input::placeholder {
  color: #888888 !important;
}

.auth-card .form-group input:focus {
  border-color: var(--accent-color) !important;
  box-shadow: 0 0 0 2px var(--accent-light) !important;
}

/* Quill custom font size dropdown styling in Snow theme */
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="x-small"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="x-small"]::before {
  content: '아주 작게' !important;
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="small"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="small"]::before {
  content: '작게' !important;
}
.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
  content: '보통' !important;
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="large"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="large"]::before {
  content: '크게' !important;
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="huge"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="huge"]::before {
  content: '아주 크게' !important;
}

/* Size classes inside the editor */
.ql-editor .ql-size-x-small { font-size: 0.75em !important; }
.ql-editor .ql-size-small { font-size: 0.85em !important; }
.ql-editor .ql-size-large { font-size: 1.3em !important; }
.ql-editor .ql-size-huge { font-size: 1.7em !important; }

/* Alignment classes inside the editor */
.ql-editor .ql-align-left { text-align: left !important; }
.ql-editor .ql-align-center { text-align: center !important; }
.ql-editor .ql-align-right { text-align: right !important; }
.ql-editor .ql-align-justify { text-align: justify !important; }

/* ==========================================================================
   6. SPELLCHECK UI STYLING
   ========================================================================== */
.spellcheck-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.spellcheck-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  cursor: pointer;
}
.spellcheck-card:hover {
  border-color: var(--accent-color, #e35b15);
  background-color: rgba(128, 128, 128, 0.05);
}
.spellcheck-word-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  flex-wrap: wrap;
}
.spellcheck-badge-wrong {
  background-color: rgba(239, 68, 68, 0.15);
  color: #fca5a5;
  border: 1px solid rgba(239, 68, 68, 0.3);
  padding: 2px 6px;
  border-radius: 4px;
  text-decoration: line-through;
  font-weight: 500;
}
.spellcheck-arrow {
  color: var(--text-muted);
  font-size: 11px;
}
.spellcheck-badge-correct {
  background-color: rgba(16, 185, 129, 0.15);
  color: #a7f3d0;
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
}
.spellcheck-msg {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.4;
  margin: 0;
}
.spellcheck-actions {
  display: flex;
  justify-content: flex-end;
  border-top: 1px solid var(--border-color);
  padding-top: 8px;
  margin-top: 4px;
}
.empty-state-mini {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 150px;
}

/* Sidebar Spellcheck Height Adjustment */
#tab-spellcheck.active {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow-y: hidden;
}
#tab-spellcheck.active .spellcheck-list {
  flex: 1;
  overflow-y: auto;
  min-height: 100px;
  padding-bottom: 20px;
}

/* Chapter History Dropdown */
.history-dropdown-wrapper {
  position: relative;
}
.history-dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  z-index: 1000;
  display: none;
  min-width: 280px;
  max-height: 320px;
  overflow-y: auto;
  padding: 8px 0;
  margin: 5px 0 0;
  background-color: var(--card-bg, #ffffff);
  border: 1px solid var(--border-color, #e5e7eb);
  border-radius: 8px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
  font-family: inherit;
  text-align: left;
}
.history-dropdown-menu.show {
  display: block;
}
.history-item {
  display: flex;
  flex-direction: column;
  padding: 10px 16px;
  cursor: pointer;
  border-bottom: 1px solid var(--border-color, #f3f4f6);
  transition: background-color 0.2s ease;
}
.history-item:hover {
  background-color: var(--hover-bg, rgba(227, 91, 21, 0.05));
}
.history-item-time {
  font-size: 11px;
  font-weight: bold;
  color: var(--book-accent-color, #e35b15);
  margin-bottom: 3px;
}
.history-item-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.history-item-preview {
  font-size: 11px;
  color: var(--text-muted, #6b7280);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.history-empty {
  padding: 20px;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted, #9ca3af);
}

/* ==========================================================================
   7. EDITOR THEMES (LIGHT / GRAY / DARK)
   ========================================================================== */
/* 1. Light Mode Override */
.ws-editor-panel.editor-theme-light {
  background-color: #ffffff !important;
}
.ws-editor-panel.editor-theme-light .editor-chapter-meta {
  background-color: #f8fafc !important;
  border-bottom: 1px solid #e2e8f0 !important;
}
.ws-editor-panel.editor-theme-light .editor-chapter-meta input[type="text"] {
  color: #0f172a !important;
}
.ws-editor-panel.editor-theme-light .ql-toolbar.ql-snow {
  background-color: #f1f5f9 !important;
  border-bottom: 1px solid #e2e8f0 !important;
}
.ws-editor-panel.editor-theme-light .ql-container.ql-snow {
  background-color: #ffffff !important;
}
.ws-editor-panel.editor-theme-light .ql-editor {
  color: #0f172a !important;
}
.ws-editor-panel.editor-theme-light .ql-editor *:not(pre):not(code) {
  color: #0f172a !important;
}
.ws-editor-panel.editor-theme-light .ql-editor.ql-blank::before {
  color: #94a3b8 !important;
}
.ws-editor-panel.editor-theme-light .ql-snow .ql-stroke {
  stroke: #475569 !important;
}
.ws-editor-panel.editor-theme-light .ql-snow .ql-fill {
  fill: #475569 !important;
}
.ws-editor-panel.editor-theme-light .ql-snow .ql-picker {
  color: #475569 !important;
}
.ws-editor-panel.editor-theme-light .ql-snow .ql-picker-options {
  background-color: #ffffff !important;
  border-color: #e2e8f0 !important;
}
.ws-editor-panel.editor-theme-light .ql-snow .ql-picker-item {
  color: #475569 !important;
}
.ws-editor-panel.editor-theme-light .ql-snow .ql-picker-item:hover,
.ws-editor-panel.editor-theme-light .ql-snow .ql-picker-label:hover {
  color: var(--accent-color) !important;
}
.ws-editor-panel.editor-theme-light .editor-helpers-bar {
  background-color: #f8fafc !important;
  border-top: 1px solid #e2e8f0 !important;
  color: #475569 !important;
}
.ws-editor-panel.editor-theme-light .editor-helpers-bar .help-title {
  color: #334155 !important;
}
.ws-editor-panel.editor-theme-light .btn-secondary {
  background-color: #ffffff !important;
  color: #475569 !important;
  border-color: #cbd5e1 !important;
}
.ws-editor-panel.editor-theme-light .btn-secondary:hover {
  background-color: #f1f5f9 !important;
}
.ws-editor-panel.editor-theme-light .lbl-chapter-size {
  color: #64748b !important;
}

/* 2. Gray Mode Override (Cozy Sepia) */
.ws-editor-panel.editor-theme-gray {
  background-color: #f4f1ea !important;
}
.ws-editor-panel.editor-theme-gray .editor-chapter-meta {
  background-color: #eae5da !important;
  border-bottom: 1px solid #dcd7ca !important;
}
.ws-editor-panel.editor-theme-gray .editor-chapter-meta input[type="text"] {
  color: #2c2a29 !important;
}
.ws-editor-panel.editor-theme-gray .ql-toolbar.ql-snow {
  background-color: #e6e0d3 !important;
  border-bottom: 1px solid #dcd7ca !important;
}
.ws-editor-panel.editor-theme-gray .ql-container.ql-snow {
  background-color: #f4f1ea !important;
}
.ws-editor-panel.editor-theme-gray .ql-editor {
  color: #2c2a29 !important;
}
.ws-editor-panel.editor-theme-gray .ql-editor *:not(pre):not(code) {
  color: #2c2a29 !important;
}
.ws-editor-panel.editor-theme-gray .ql-editor.ql-blank::before {
  color: #8c857b !important;
}
.ws-editor-panel.editor-theme-gray .ql-snow .ql-stroke {
  stroke: #4a3e3d !important;
}
.ws-editor-panel.editor-theme-gray .ql-snow .ql-fill {
  fill: #4a3e3d !important;
}
.ws-editor-panel.editor-theme-gray .ql-snow .ql-picker {
  color: #4a3e3d !important;
}
.ws-editor-panel.editor-theme-gray .ql-snow .ql-picker-options {
  background-color: #eae5da !important;
  border-color: #dcd7ca !important;
}
.ws-editor-panel.editor-theme-gray .ql-snow .ql-picker-item {
  color: #4a3e3d !important;
}
.ws-editor-panel.editor-theme-gray .ql-snow .ql-picker-item:hover,
.ws-editor-panel.editor-theme-gray .ql-snow .ql-picker-label:hover {
  color: var(--accent-color) !important;
}
.ws-editor-panel.editor-theme-gray .editor-helpers-bar {
  background-color: #eae5da !important;
  border-top: 1px solid #dcd7ca !important;
  color: #4a3e3d !important;
}
.ws-editor-panel.editor-theme-gray .editor-helpers-bar .help-title {
  color: #2c2a29 !important;
}
.ws-editor-panel.editor-theme-gray .btn-secondary {
  background-color: #f4f1ea !important;
  color: #4a3e3d !important;
  border-color: #c5bfae !important;
}
.ws-editor-panel.editor-theme-gray .btn-secondary:hover {
  background-color: #eae5da !important;
}
.ws-editor-panel.editor-theme-gray .lbl-chapter-size {
  color: #70695d !important;
}

/* 3. Dark Mode Override (Slate/Charcoal) */
.ws-editor-panel.editor-theme-dark {
  background-color: #1e1e1e !important;
}
.ws-editor-panel.editor-theme-dark .editor-chapter-meta {
  background-color: #181818 !important;
  border-bottom: 1px solid #2e2e2e !important;
}
.ws-editor-panel.editor-theme-dark .editor-chapter-meta input[type="text"] {
  color: #ede5d8 !important;
}
.ws-editor-panel.editor-theme-dark .ql-toolbar.ql-snow {
  background-color: #252525 !important;
  border-bottom: 1px solid #2e2e2e !important;
}
.ws-editor-panel.editor-theme-dark .ql-container.ql-snow {
  background-color: #1e1e1e !important;
}
.ws-editor-panel.editor-theme-dark .ql-editor {
  color: #ede5d8 !important;
}
.ws-editor-panel.editor-theme-dark .ql-editor.ql-blank::before {
  color: #7e7161 !important;
}
.ws-editor-panel.editor-theme-dark .ql-snow .ql-stroke {
  stroke: #b5a897 !important;
}
.ws-editor-panel.editor-theme-dark .ql-snow .ql-fill {
  fill: #b5a897 !important;
}
.ws-editor-panel.editor-theme-dark .ql-snow .ql-picker {
  color: #b5a897 !important;
}
.ws-editor-panel.editor-theme-dark .ql-snow .ql-picker-options {
  background-color: #181818 !important;
  border-color: #2e2e2e !important;
}
.ws-editor-panel.editor-theme-dark .ql-snow .ql-picker-item {
  color: #b5a897 !important;
}
.ws-editor-panel.editor-theme-dark .ql-snow .ql-picker-item:hover,
.ws-editor-panel.editor-theme-dark .ql-snow .ql-picker-label:hover {
  color: var(--accent-color) !important;
}
.ws-editor-panel.editor-theme-dark .editor-helpers-bar {
  background-color: #181818 !important;
  border-top: 1px solid #2e2e2e !important;
  color: #b5a897 !important;
}
.ws-editor-panel.editor-theme-dark .editor-helpers-bar .help-title {
  color: #ede5d8 !important;
}
.ws-editor-panel.editor-theme-dark .btn-secondary {
  background-color: #252525 !important;
  color: #ede5d8 !important;
  border-color: #3e3e3e !important;
}
.ws-editor-panel.editor-theme-dark .btn-secondary:hover {
  background-color: #2e2e2e !important;
}
.ws-editor-panel.editor-theme-dark .lbl-chapter-size {
  color: #7e7161 !important;
}


/* ==========================================================================
   8. PREVIEW STATISTICS DASHBOARD
   ========================================================================== */
.preview-stats-dashboard {
  background-color: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 12px 15px;
  margin: 10px 15px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex-shrink: 0;
}
.sidebar-stats-area {
  border-top: 1px solid var(--border-color);
  padding: 15px 20px;
  background-color: rgba(0, 0, 0, 0.15);
  flex-shrink: 0;
}
.sidebar-stats-area .preview-stats-dashboard {
  background: none;
  border: none;
  border-radius: 0;
  padding: 0;
  margin: 0;
  box-shadow: none;
}

.preview-stats-dashboard .stats-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.preview-stats-dashboard .stats-title i {
  color: var(--accent-color);
}

.preview-stats-dashboard .stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.preview-stats-dashboard .stats-box {
  background-color: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.preview-stats-dashboard .stats-label {
  font-size: 10px;
  color: var(--text-muted);
  font-weight: 500;
}

.preview-stats-dashboard .stats-value {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 2px 0;
  font-family: var(--font-title);
}

.preview-stats-dashboard .stats-sub {
  font-size: 9px;
  color: var(--text-muted);
}


/* ==========================================================================
   9. CHAPTER DRAG-AND-DROP REORDERING FEEDBACK
   ========================================================================== */
.chapter-item[draggable="true"] {
  cursor: grab;
  user-select: none;
}

.chapter-item[draggable="true"]:active {
  cursor: grabbing;
}

.chapter-item.dragging {
  opacity: 0.4;
  border: 2px dashed var(--accent-color) !important;
  background-color: rgba(227, 91, 21, 0.05) !important;
  transform: scale(0.98);
  transition: transform 0.1s ease;
}

.chapter-item.drag-over {
  border-top: 2px solid var(--accent-color) !important;
  background-color: rgba(255, 255, 255, 0.02);
}

/* ==========================================================================
   10. TIME MACHINE VERSION CONTROL UI STYLING
   ========================================================================== */
.tm-version-item {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 10px 12px;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  gap: 6px;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.tm-version-item:hover {
  border-color: var(--accent-color);
  background-color: rgba(255, 255, 255, 0.02);
}

.tm-version-item.active {
  border-color: var(--accent-color);
  background-color: var(--accent-light);
  box-shadow: 0 0 8px rgba(227, 91, 21, 0.2);
}

.tm-version-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
}

.tm-version-time {
  font-weight: 700;
  color: var(--text-primary);
}

.tm-badge {
  display: inline-block;
  padding: 2px 6px;
  font-size: 9px;
  font-weight: 600;
  border-radius: 4px;
}

.tm-badge-manual {
  background-color: var(--accent-light);
  color: var(--accent-color);
  border: 1px solid rgba(227, 91, 21, 0.3);
}

.tm-badge-auto {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.tm-version-details {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-secondary);
}

.tm-version-memo {
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 170px;
  color: var(--text-primary);
}

.tm-version-chars {
  color: var(--text-muted);
}

/* Diff highlights inside diff-viewer */
#tm-diff-viewer ins {
  background-color: rgba(16, 185, 129, 0.25) !important;
  color: #a7f3d0 !important;
  text-decoration: none !important;
  padding: 1px 2px;
  border-radius: 2px;
}

#tm-diff-viewer del {
  background-color: rgba(239, 68, 68, 0.25) !important;
  color: #fca5a5 !important;
  text-decoration: line-through !important;
  padding: 1px 2px;
  border-radius: 2px;
}

/* Quick Theme Picker Container and Styles */
.editor-theme-picker-container {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: rgba(128, 128, 128, 0.05);
  padding: 4px 10px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-color);
  margin-right: 12px;
}
.editor-theme-picker-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}
.editor-theme-picker {
  display: flex;
  gap: 4px;
}
.editor-theme-picker .theme-quick-btn {
  padding: 4px 8px;
  font-size: 11px;
  font-weight: 500;
  background: none;
  border: 1px solid transparent;
  border-radius: var(--border-radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: all var(--transition-fast);
}
.editor-theme-picker .theme-quick-btn:hover {
  background-color: rgba(128, 128, 128, 0.1);
  color: var(--text-primary);
}
.editor-theme-picker .theme-quick-btn.active {
  background-color: var(--accent-light) !important;
  color: var(--accent-color) !important;
  border: 1px solid rgba(227, 91, 21, 0.3) !important;
  border-radius: var(--border-radius-sm) !important;
  font-weight: 600;
}
.editor-theme-picker .theme-quick-btn.btn-light i { color: #f59e0b; }
.editor-theme-picker .theme-quick-btn.btn-gray i { color: #a16207; }
.editor-theme-picker .theme-quick-btn.btn-dark i { color: #818cf8; }

/* Editor Inside Drop Cap style support */
.ql-editor .drop-cap::first-letter,
.ql-editor .drop-cap-true::first-letter {
  font-size: 2.8em !important;
  float: left !important;
  line-height: 0.9 !important;
  margin-right: 0.12em !important;
  margin-top: 0.1em !important;
  font-weight: bold !important;
  color: var(--accent-color, #e35b15) !important;
}

/* Editor Inside HR (Divider) style support */
.ql-editor hr {
  border: none !important;
  height: 1px !important;
  background-color: var(--border-color) !important;
  margin: 2em auto !important;
  width: 50% !important;
  display: block !important;
}

.ws-editor-panel.editor-theme-light .ql-editor hr {
  background-color: #cbd5e1 !important;
}

.ws-editor-panel.editor-theme-gray .ql-editor hr {
  background-color: #c5bfae !important;
}

/* 9. NOTEPAD WRITING MODE (PLAIN TEXT STYLING) */
.ws-editor-panel.notepad-mode .ql-toolbar.ql-snow {
  display: none !important;
}
.ws-editor-panel.notepad-mode .ql-editor {
  font-family: Consolas, Monaco, 'Courier New', monospace !important;
  line-height: 1.6 !important;
  font-size: 15px !important;
  padding: 30px 40px !important;
  border-top: 1px solid var(--border-color) !important;
}

.ws-editor-panel.notepad-mode .ql-editor *:not(pre):not(code) {
  font-family: Consolas, Monaco, 'Courier New', monospace !important;
  font-size: 14px !important;
  line-height: 1.5 !important;
  text-indent: 0 !important;
  margin-top: 0.4em !important;
  margin-bottom: 0.4em !important;
  padding: 0 !important;
  background: none !important;
  border: none !important;
  font-weight: normal !important;
  font-style: normal !important;
  text-decoration: none !important;
}

.ws-editor-panel.notepad-mode .ql-editor h1,
.ws-editor-panel.notepad-mode .ql-editor h2,
.ws-editor-panel.notepad-mode .ql-editor h3,
.ws-editor-panel.notepad-mode .ql-editor h4 {
  font-weight: bold !important;
  margin-top: 0.8em !important;
  margin-bottom: 0.4em !important;
}

.ws-editor-panel.notepad-mode .ql-editor blockquote {
  border-left: 3px solid var(--text-muted, #7e7161) !important;
  padding-left: 10px !important;
  background: none !important;
  margin: 0.8em 0 !important;
}

.ws-editor-panel.notepad-mode .ql-editor hr {
  margin: 1.2em auto !important;
  width: 90% !important;
}/* ==========================================================================
   SLIDE VIEWER (GUIDE SECTION) STYLES
   ========================================================================== */
.guide-section {
  margin-top: 40px;
  border-top: 1px solid var(--border-color);
  padding-top: 30px;
  gap: 12px !important;
}

.guide-container {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-top: 0;
  width: 100%;
}

.guide-info {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
}

.guide-info h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
}

.guide-info p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.guide-tag-badge {
  background: var(--accent-light);
  color: var(--accent-color);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  margin-left: 10px;
}

.slide-viewer-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 25px;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
  transition: all var(--transition-normal);
  width: 100%;
  box-sizing: border-box;
}

.slide-frame-wrapper {
  width: 100%;
  max-width: 100%;
  aspect-ratio: 16 / 9;
  background: #000;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.slide-image-container {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #000000;
}

.slide-image-container img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: opacity 0.2s ease;
}

.slide-fallback-msg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--text-secondary);
  padding: 30px;
  box-sizing: border-box;
  background: #171514;
}

.slide-fallback-msg i {
  font-size: 40px;
  color: var(--accent-color);
  margin-bottom: 12px;
  animation: pulse 2s infinite ease-in-out;
}

.slide-fallback-msg h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.slide-fallback-msg p {
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-secondary);
}

.slide-fallback-msg code {
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: monospace;
  color: var(--text-primary);
}

.slide-control-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  width: 100%;
}

.slide-counter {
  font-size: 14px;
  font-weight: 500;
  font-family: var(--font-title);
  color: var(--text-secondary);
  min-width: 60px;
  text-align: center;
}

.slide-dots-container {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  width: 100%;
  margin-top: 5px;
}

.slide-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  border: 1px solid rgba(255, 255, 255, 0.05);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.slide-dot:hover {
  background: var(--text-muted);
}

.slide-dot.active {
  background: var(--accent-color);
  transform: scale(1.25);
  box-shadow: 0 0 8px var(--accent-color);
}

/* Fullscreen custom mode */
.slide-viewer-card.fullscreen-mode {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  width: 100vw !important;
  height: 100vh !important;
  max-width: 100vw !important;
  max-height: 100vh !important;
  z-index: 99999 !important;
  background: #000000 !important;
  border: none !important;
  border-radius: 0 !important;
  padding: 40px !important;
  justify-content: center !important;
}

.slide-viewer-card.fullscreen-mode .slide-frame-wrapper {
  max-width: 90vw;
  max-height: 75vh;
  height: 100%;
  border: none;
}

@keyframes pulse {
  0% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(1.05); opacity: 1; }
  100% { transform: scale(1); opacity: 0.8; }
}

/* ==========================================================================
   11. AUTH OVERLAY RESPONSIVE LAYOUT
   ========================================================================== */
@media (max-width: 899px) {
  .auth-promo-panel {
    display: none !important;
  }
  .auth-layout-container {
    max-width: 480px;
    min-height: auto;
  }
  .auth-logo {
    display: flex !important;
  }
}

@media (min-width: 900px) {
  .auth-logo {
    display: none !important;
  }
}

/* ==========================================================================
   12. REEDSY STUDIO-STYLE WORKSPACE OVERHAUL STYLES
   ========================================================================== */

/* Sidebar collapsed state transitions */
.ws-container {
  transition: grid-template-columns 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
}
.ws-container.sidebar-collapsed {
  grid-template-columns: 0px 1fr 420px !important;
}
.ws-container.sidebar-collapsed.preview-closed {
  grid-template-columns: 0px 1fr 48px !important;
}
.ws-container.sidebar-collapsed .ws-sidebar {
  width: 0 !important;
  min-width: 0 !important;
  border-right: none !important;
  overflow: hidden !important;
  padding: 0 !important;
  display: none !important;
}

/* Control Bar styling */
.editor-top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 20px;
  background-color: var(--bg-panel);
  border-bottom: 1px solid var(--border-color);
  gap: 15px;
  flex-shrink: 0;
  box-sizing: border-box;
  height: 48px;
}

.editor-top-left {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.btn-toggle-sidebar {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 15px;
  cursor: pointer;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}
.btn-toggle-sidebar:hover {
  color: var(--accent-color);
  background-color: rgba(255, 255, 255, 0.05);
}

.editor-breadcrumb {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: flex;
  align-items: center;
}
.editor-breadcrumb .active {
  color: var(--text-primary);
  font-weight: 600;
}

.editor-top-right {
  display: flex;
  align-items: center;
  gap: 2px;
}

.divider-v-small {
  width: 1px;
  height: 14px;
  background-color: var(--border-color);
  margin: 0 4px;
}

/* Page Simulator (Paper Sheet) */
.editor-main-wrap {
  background-color: var(--bg-secondary); /* Container background (darker) */
  flex: 1;
  overflow-y: auto;
  padding: 25px 20px;
  box-sizing: border-box;
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

.editor-paper-sheet {
  width: 100%;
  max-width: 100%;
  min-height: calc(100vh - 200px);
  background-color: var(--bg-panel); /* Paper page background */
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  padding: 60px 70px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  gap: 25px;
  margin: 0 auto;
}

.editor-sheet-title-wrap {
  width: 100%;
  margin-bottom: 10px;
}

.editor-sheet-title-wrap input[type="text"] {
  width: 100%;
  background: none !important;
  border: none !important;
  font-size: 28px !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  font-family: var(--font-title, serif) !important;
  padding: 0 !important;
  outline: none !important;
  text-align: center !important;
  box-sizing: border-box;
}

.editor-sheet-title-divider {
  height: 2px;
  background-color: var(--accent-light, rgba(227,91,21,0.2));
  width: 80px;
  margin: 15px auto 0 auto;
}

/* Adjust Quill Inside Paper Sheet */
.editor-paper-sheet #editor-container {
  flex: 1;
  border: none !important;
  font-family: inherit !important;
}

.editor-paper-sheet .ql-container.ql-snow {
  background: none !important;
  border: none !important;
  flex: 1 !important;
  display: block !important;
}

.editor-paper-sheet .ql-editor {
  padding: 0 !important; /* No extra padding since container has padding */
  min-height: 300px !important;
  font-size: 15px !important;
  line-height: 1.85 !important;
  color: var(--text-secondary) !important;
  font-family: var(--font-primary) !important;
  overflow: visible !important;
}

.editor-paper-sheet .ql-editor.ql-blank::before {
  left: 0 !important;
  right: 0 !important;
  top: 0 !important;
  font-style: italic !important;
  color: var(--text-muted) !important;
}

/* Quick Links & Groups inside Outline Tab */
.outline-group {
  display: flex;
  flex-direction: column;
}
.outline-group-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.outline-quick-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: rgba(0, 0, 0, 0.15) !important;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}
.outline-quick-link:hover {
  background-color: rgba(227, 91, 21, 0.05) !important;
  border-color: var(--accent-color);
  color: var(--text-primary);
}

/* Planning notes Textarea styling */
#tab-plan textarea {
  background-color: rgba(0, 0, 0, 0.15) !important;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  border-radius: 6px;
  padding: 10px;
  font-family: inherit;
  font-size: 12px;
  line-height: 1.5;
  resize: vertical;
}
#tab-plan textarea:focus {
  border-color: var(--accent-color);
  outline: none;
}

/* Design Section Box & Info Section Box formatting */
.design-section-box, .info-section-box {
  background: rgba(0, 0, 0, 0.1);
  border-radius: var(--border-radius-md);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.design-section-box h3, .info-section-box h3 {
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
}

/* Custom paper colors based on editor theme mode */
/* 1. Light Mode */
.ws-editor-panel.editor-theme-light {
  background-color: #f1f5f9 !important; /* Cool grey background */
}
.ws-editor-panel.editor-theme-light .editor-top-bar {
  background-color: #ffffff !important;
  border-bottom-color: #cbd5e1 !important;
}
.ws-editor-panel.editor-theme-light .editor-paper-sheet {
  background-color: #ffffff !important;
  border-color: #cbd5e1 !important;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05) !important;
}
.ws-editor-panel.editor-theme-light .editor-sheet-title-wrap input[type="text"] {
  color: #0f172a !important;
}
.ws-editor-panel.editor-theme-light .ql-editor {
  color: #334155 !important;
}

/* 2. Cozy Sepia Mode (원고지) */
.ws-editor-panel.editor-theme-gray {
  background-color: #e6e0d3 !important; /* Muted Sepia Container bg */
}
.ws-editor-panel.editor-theme-gray .editor-top-bar {
  background-color: #eae5da !important;
  border-bottom-color: #c5bfae !important;
}
.ws-editor-panel.editor-theme-gray .editor-paper-sheet {
  background-color: #f4f1ea !important; /* Cozy cream paper */
  border-color: #c5bfae !important;
  box-shadow: 0 10px 30px rgba(74, 62, 61, 0.15) !important;
}
.ws-editor-panel.editor-theme-gray .editor-sheet-title-wrap input[type="text"] {
  color: #2c2a29 !important;
}
.ws-editor-panel.editor-theme-gray .ql-editor {
  color: #2c2a29 !important;
}

/* 3. Dark Espresso Mode (다크) */
.ws-editor-panel.editor-theme-dark {
  background-color: #12100f !important; /* Extra deep container bg */
}
.ws-editor-panel.editor-theme-dark .editor-top-bar {
  background-color: #1a1716 !important;
  border-bottom-color: #2e2621 !important;
}
.ws-editor-panel.editor-theme-dark .editor-paper-sheet {
  background-color: #1a1716 !important; /* Deep warm paper */
  border-color: #2e2621 !important;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3) !important;
}
.ws-editor-panel.editor-theme-dark .editor-sheet-title-wrap input[type="text"] {
  color: #ede5d8 !important;
}
.ws-editor-panel.editor-theme-dark .ql-editor {
  color: #ede5d8 !important;
}

/* Auth active scroll lock to prevent background scroll leaks on mobile */
body.auth-active {
  overflow: hidden !important;
  width: 100vw !important;
  height: 100vh !important;
}

/* ==========================================================================
   13. WORKSPACE RESPONSIVE MOBILE LAYOUT
   ========================================================================== */
@media (max-width: 640px) {
  .ws-container {
    display: block !important;
    position: relative !important;
    height: calc(100vh - 60px) !important;
    overflow-x: hidden !important;
    overflow-y: auto !important;
  }
  
  /* Make the editor take full screen */
  .ws-editor-panel {
    width: 100% !important;
    margin: 0 !important;
    min-height: calc(100vh - 60px) !important;
  }
  
  /* Left Sidebar Overlay on Mobile */
  .ws-sidebar {
    position: fixed !important;
    top: 60px !important;
    left: 0 !important;
    width: 280px !important;
    height: calc(100vh - 60px) !important;
    z-index: 999 !important;
    transform: translateX(-100%);
    transition: transform 0.3s ease !important;
    box-shadow: 5px 0 15px rgba(0,0,0,0.5) !important;
    border-right: 1px solid var(--border-color) !important;
    display: flex !important; /* Override collapsed state's display: none */
  }
  
  /* If NOT collapsed, show sidebar on mobile */
  .ws-container:not(.sidebar-collapsed) .ws-sidebar {
    transform: translateX(0) !important;
  }
  
  /* If collapsed, slide out sidebar on mobile */
  .ws-container.sidebar-collapsed .ws-sidebar {
    transform: translateX(-100%) !important;
    display: flex !important; /* Keep it flex for animation to work, but positioned off-screen */
    width: 280px !important;
  }
  
  /* Right Preview Overlay on Mobile */
  .ws-preview-panel {
    position: fixed !important;
    top: 60px !important;
    right: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
    height: calc(100vh - 60px) !important;
    z-index: 998 !important;
    transform: translateX(100%);
    transition: transform 0.3s ease !important;
    box-shadow: -5px 0 15px rgba(0,0,0,0.5) !important;
  }
  
  /* If NOT collapsed (i.e. expanded), show preview on mobile */
  .ws-container:not(.preview-closed) .ws-preview-panel {
    transform: translateX(0) !important;
  }
  
  /* If collapsed (i.e. preview-closed), slide out preview on mobile */
  .ws-container.preview-closed .ws-preview-panel {
    transform: translateX(100%) !important;
  }
  
  /* Floating toggle for preview on mobile */
  .preview-collapsed-bar {
    position: fixed !important;
    bottom: 20px !important;
    right: 20px !important;
    width: 50px !important;
    height: 50px !important;
    border-radius: 50% !important;
    background-color: var(--accent-color) !important;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    z-index: 997 !important;
    border: none !important;
  }
  
  .preview-collapsed-bar .btn-collapsed-open {
    color: #fff !important;
    font-size: 20px !important;
    background: none !important;
    border: none !important;
    width: 100% !important;
    height: 100% !important;
  }
  
  /* Adjust preview close button position on mobile */
  .ws-preview-panel .preview-header {
    padding: 10px 15px !important;
  }
  
  /* Adjust paper sheet layout on mobile for clean spacing */
  .editor-paper-sheet {
    padding: 30px 20px !important;
    margin: 10px auto !important;
    border-radius: 0 !important;
    border-left: none !important;
    border-right: none !important;
  }
}

/* Sub-tabs inside Sidebar tabs */
.ws-sub-tab-nav {
  display: flex;
  gap: 6px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 8px;
  margin-bottom: 15px;
  flex-shrink: 0;
}
.ws-sub-tab-btn {
  flex: 1;
  padding: 8px 4px;
  font-size: 11px;
  font-weight: 600;
  text-align: center;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.ws-sub-tab-btn:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
}
.ws-sub-tab-btn.active {
  background-color: var(--accent-light) !important;
  border-color: var(--accent-color) !important;
  color: var(--accent-color) !important;
}
.ws-sub-tab-pane {
  display: none;
  flex-direction: column;
  gap: 20px;
  overflow-y: auto;
  flex: 1;
}
.ws-sub-tab-pane.active {
  display: flex;
}

/* Select Option styling for dark mode visibility */
select option {
  background-color: #1b1917 !important; /* matches --bg-secondary */
  color: #ede5d8 !important;            /* matches --text-primary */
}

/* Color unification for editor backgrounds to reduce contrast and eye strain */
/* 1. Light Mode Unification */
.ws-editor-panel.editor-theme-light .editor-main-wrap {
  background-color: #ffffff !important;
}
.ws-editor-panel.editor-theme-light .ql-toolbar.ql-snow {
  background-color: #ffffff !important;
  border-bottom: 1px solid #cbd5e1 !important;
}

/* 2. Cozy Sepia Mode Unification */
.ws-editor-panel.editor-theme-gray .editor-top-bar {
  background-color: #f4f1ea !important;
}
.ws-editor-panel.editor-theme-gray .editor-main-wrap {
  background-color: #f4f1ea !important;
}
.ws-editor-panel.editor-theme-gray .ql-toolbar.ql-snow {
  background-color: #f4f1ea !important;
  border-bottom: 1px solid #c5bfae !important;
}

/* 3. Dark Espresso Mode Unification */
.ws-editor-panel.editor-theme-dark .editor-main-wrap {
  background-color: #1a1716 !important;
}
.ws-editor-panel.editor-theme-dark .ql-toolbar.ql-snow {
  background-color: #1a1716 !important;
  border-bottom: 1px solid #2e2621 !important;
}
.ws-editor-panel.editor-theme-dark .ql-container.ql-snow {
  background-color: #1a1716 !important;
}

/* ==========================================================================
   14. LANDING HOMEPAGE STYLING (Reedsy Studio style)
   ========================================================================== */
#landing-view {
  background-color: #0f0d0c; /* Deep espresso dark */
  color: var(--text-primary);
  width: 100%;
  min-height: 100vh;
  position: relative;
  overflow-y: auto;
  scroll-behavior: smooth;
}

/* Header Navigation */
.landing-header {
  position: sticky;
  top: 0;
  width: 100%;
  background: rgba(15, 13, 12, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  z-index: 100;
  padding: 15px 40px;
  box-sizing: border-box;
}
.landing-nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.landing-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none !important;
  color: inherit !important;
}
.landing-brand:hover {
  text-decoration: none !important;
  color: inherit !important;
}
.landing-brand:hover .landing-brand-text {
  color: var(--accent-color) !important;
}
.landing-brand .brand-icon {
  font-size: 24px;
  color: var(--accent-color);
}
.landing-brand-text {
  font-family: var(--font-title);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: #ffffff;
}
.landing-nav-links {
  display: flex;
  gap: 25px;
}
.landing-nav-links a {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: color var(--transition-fast);
}
.landing-nav-links a:hover {
  color: var(--accent-color);
}
.landing-auth-buttons {
  display: flex;
  gap: 10px;
}

/* Hero Section */
.landing-hero-section {
  padding: 100px 20px 80px 20px;
  text-align: center;
  background: radial-gradient(circle at center top, rgba(227, 91, 21, 0.1) 0%, rgba(15, 13, 12, 0) 60%);
}
.landing-hero-content {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}
.landing-hero-badge {
  background: rgba(227, 91, 21, 0.1);
  border: 1px solid rgba(227, 91, 21, 0.25);
  color: var(--accent-color);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
}
.landing-hero-title {
  font-size: 46px;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.5px;
  color: #ffffff;
  font-family: var(--font-title);
  word-break: keep-all;
  overflow-wrap: break-word;
}
.landing-hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 680px;
  word-break: keep-all;
  overflow-wrap: break-word;
}
.landing-hero-actions {
  display: flex;
  gap: 15px;
  margin-top: 15px;
  align-items: center;
}

/* Section Header Utility */
.landing-section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 50px auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.landing-section-header .sub-title {
  color: var(--accent-color);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}
.landing-section-header h2 {
  font-size: 32px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.5px;
}
.landing-section-header p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Simulator Preview Section */
.landing-sim-section {
  padding: 60px 20px 100px 20px;
  background-color: #0c0a0a;
}
.sim-browser-frame {
  max-width: 1100px;
  margin: 0 auto;
  background-color: #1a1716;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.6);
}
.sim-browser-header {
  background-color: #12100f;
  padding: 12px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  gap: 20px;
}
.sim-browser-dots {
  display: flex;
  gap: 6px;
}
.sim-browser-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot-red { background-color: #ef4444; }
.dot-yellow { background-color: #f59e0b; }
.dot-green { background-color: #10b981; }
.sim-browser-address {
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 6px;
  padding: 4px 20px;
  font-size: 11px;
  color: var(--text-muted);
  width: 320px;
  text-align: center;
  font-family: monospace;
}
.sim-workspace-body {
  display: grid;
  grid-template-columns: 200px 1fr 280px;
  height: 480px;
  background-color: #1a1716;
}
.sim-workspace-sidebar {
  background-color: #12100f;
  border-right: 1px solid rgba(255, 255, 255, 0.04);
  padding: 20px 15px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.sim-sidebar-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.sim-sidebar-item {
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 12px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.sim-sidebar-item.active {
  background-color: rgba(227, 91, 21, 0.08);
  color: var(--accent-color);
  font-weight: 600;
}
.sim-sidebar-add {
  font-size: 12px;
  color: var(--text-muted);
  padding: 8px 12px;
  cursor: default;
  display: flex;
  align-items: center;
  gap: 8px;
}
.sim-workspace-editor {
  border-right: 1px solid rgba(255, 255, 255, 0.04);
  display: flex;
  flex-direction: column;
  background-color: #161312;
}
.sim-editor-toolbar {
  background-color: #12100f;
  padding: 10px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  display: flex;
  gap: 15px;
  font-size: 12px;
  color: var(--text-muted);
}
.sim-editor-paper {
  flex: 1;
  padding: 40px;
  overflow-y: auto;
  line-height: 1.7;
  font-family: var(--font-serif);
  color: #ede5d8;
  max-width: 600px;
  margin: 0 auto;
}
.sim-editor-paper h3 {
  font-family: var(--font-serif);
  font-size: 24px;
  margin-bottom: 20px;
  color: #ede5d8;
}
.sim-editor-paper p {
  margin-bottom: 15px;
  text-indent: 12px;
}
.sim-workspace-preview {
  background-color: #12100f;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}
.sim-preview-phone {
  width: 220px;
  height: 400px;
  background-color: #000000;
  border: 4px solid #332d29;
  border-radius: 20px;
  padding: 10px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  box-sizing: border-box;
}
.sim-phone-screen {
  background-color: #fdfbf7;
  border-radius: 12px;
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: 15px;
  color: #1a1a1a;
  box-sizing: border-box;
  font-family: var(--font-serif);
  font-size: 10px;
  line-height: 1.4;
  overflow: hidden;
}
.sim-phone-header {
  font-size: 11px;
  font-weight: 700;
  border-bottom: 1px solid rgba(0,0,0,0.08);
  padding-bottom: 4px;
  margin-bottom: 10px;
  text-align: center;
  color: #8e7f70;
}
.sim-phone-content p {
  margin-bottom: 8px;
  text-indent: 8px;
}
.sim-phone-footer {
  margin-top: auto;
  border-top: 1px solid rgba(0,0,0,0.05);
  padding-top: 4px;
  text-align: center;
  font-size: 8px;
  color: #a0a0a0;
}

/* Features Section (7 values grid) */
.landing-features-section {
  padding: 100px 20px;
  max-width: 1200px;
  margin: 0 auto;
}
.landing-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 40px;
}
.feature-card {
  background-color: var(--bg-panel);
  border: 1px solid rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  padding: 30px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: all var(--transition-normal);
  box-sizing: border-box;
}
.feature-card:hover {
  transform: translateY(-5px);
  border-color: rgba(227, 91, 21, 0.3);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}
.feature-card-header {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.feature-badge {
  background-color: rgba(227, 91, 21, 0.1);
  color: var(--accent-color);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  align-self: flex-start;
}
.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: #ffffff;
}
.feature-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}
.feature-card.full-width-card {
  grid-column: span 3;
}
.feature-card .mockup-widget-container {
  margin-bottom: 0;
  margin-top: auto;
}

/* Compliance Section */
.landing-compliance-section {
  background-color: #0c0a0a;
  padding: 100px 20px;
}
.landing-compliance-container {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 50px;
  align-items: center;
}
.compliance-badge {
  color: #10b981;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 10px;
}
.compliance-text-content h2 {
  font-size: 32px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 15px;
}
.compliance-text-content p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 25px;
}
.compliance-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.compliance-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}
.compliance-list li i {
  color: #10b981;
}
.compliance-visual-widget {
  display: flex;
  justify-content: center;
}
.validator-dropdown-mockup {
  background-color: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 24px;
  width: 100%;
  max-width: 420px;
}
.validator-dropdown-mockup h3 {
  font-size: 15px;
  font-weight: 600;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 15px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  padding-bottom: 10px;
}
.val-summary {
  display: flex;
  justify-content: space-between;
  margin-bottom: 15px;
}
.val-summary-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.val-summary-item .label {
  font-size: 11px;
  color: var(--text-muted);
}
.val-summary-item strong {
  font-size: 16px;
  color: #ffffff;
}
.val-summary-item .status-pass {
  color: #10b981;
  font-size: 13px;
  font-weight: 600;
}
.val-divider {
  height: 1px;
  background-color: rgba(255,255,255,0.05);
  margin: 15px 0;
}
.validator-dropdown-mockup h4 {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 10px;
}
.val-issues-list-mock {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.val-issues-list-mock li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-secondary);
}

/* Bottom CTA section */
.landing-bottom-cta {
  padding: 100px 20px;
  text-align: center;
  background: linear-gradient(180deg, #0c0a0a 0%, #15110e 100%);
}
.cta-inner-container {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}
.landing-bottom-cta h2 {
  font-size: 36px;
  font-weight: 700;
  color: #ffffff;
}
.landing-bottom-cta p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Footer Section */
.landing-footer {
  background-color: #090807;
  padding: 40px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.03);
}
.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 14px;
}
.footer-brand i {
  color: var(--accent-color);
}
.footer-copyright {
  font-size: 12px;
  color: var(--text-muted);
}

/* Glassmorphism Auth Modal Card */
.auth-modal-card {
  position: relative;
  background: rgba(30, 27, 26, 0.65) !important; /* Translucent warm panel */
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  border-radius: var(--border-radius-lg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
  width: 95%;
  max-width: 440px;
  animation: scaleUp 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  overflow: hidden;
  z-index: 10005;
}
.auth-modal-card .auth-card {
  background-color: transparent !important;
  padding: 30px;
}
.btn-modal-close-x {
  position: absolute;
  top: 15px;
  right: 15px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 20px;
  cursor: pointer;
  z-index: 10;
  transition: color var(--transition-fast);
}
.btn-modal-close-x:hover {
  color: var(--accent-color);
}

/* Modal Overlay high z-index */
#auth-modal.modal-overlay {
  z-index: 10000 !important;
}

/* Responsive Landing Page */
@media (max-width: 992px) {
  .landing-features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .feature-card.full-width-card {
    grid-column: span 2;
  }
  .landing-compliance-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .sim-workspace-body {
    grid-template-columns: 180px 1fr;
  }
  .sim-workspace-preview {
    display: none;
  }
}

@media (max-width: 768px) {
  .landing-header {
    padding: 15px 20px;
  }
  .landing-nav-links {
    display: none;
  }
  .landing-hero-title {
    font-size: 32px;
  }
  .landing-hero-subtitle {
    font-size: 15px;
  }
  .landing-features-grid {
    grid-template-columns: 1fr;
  }
  .feature-card.full-width-card {
    grid-column: span 1;
  }
  .sim-workspace-body {
    grid-template-columns: 1fr;
  }
  .sim-workspace-sidebar {
    display: none;
  }
  .landing-section-header h2 {
    font-size: 24px;
  }
  .footer-container {
    flex-direction: column;
    gap: 15px;
    text-align: center;
  }
}

/* Bookstore Promo Section */
.landing-bookstore-promo-section {
  padding: 100px 0;
  background-color: #110e0c; /* Warm dark brown tone */
  border-top: 1px solid rgba(227, 91, 21, 0.15);
  border-bottom: 1px solid rgba(227, 91, 21, 0.15);
  position: relative;
}

.landing-bookstore-promo-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  align-items: center;
  gap: 80px;
}

.bookstore-promo-visual {
  flex: 1.1;
}

.bookstore-image-frame {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(227, 91, 21, 0.3);
  box-shadow: 0 20px 40px rgba(0,0,0,0.5);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.bookstore-image-frame:hover {
  transform: translateY(-8px);
  box-shadow: 0 25px 50px rgba(227, 91, 21, 0.25);
}

.bookstore-promo-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.bookstore-image-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.85), transparent);
  padding: 20px;
  color: rgba(255,255,255,0.85);
  font-size: 13px;
  font-weight: 500;
  text-align: center;
}

.bookstore-promo-text {
  flex: 0.9;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.bookstore-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  align-self: flex-start;
  background-color: rgba(227, 91, 21, 0.15);
  color: var(--accent-color);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  border: 1px solid rgba(227, 91, 21, 0.25);
}

.bookstore-promo-text h2 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.3;
  color: #fff;
  margin: 0;
}

.bookstore-promo-text p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.8;
  margin: 0;
}

.bookstore-features {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 10px;
}

.bookstore-feat-item {
  display: flex;
  gap: 15px;
  align-items: flex-start;
}

.bookstore-feat-item i {
  font-size: 20px;
  margin-top: 4px;
  flex-shrink: 0;
}

.bookstore-feat-item strong {
  color: #fff;
  font-size: 15px;
  display: block;
  margin-bottom: 4px;
}

.bookstore-feat-item p {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
}

.bookstore-actions {
  display: flex;
  gap: 16px;
  margin-top: 15px;
}

.btn-secondary-light {
  background-color: var(--bg-tertiary) !important;
  color: #fff !important;
  font-weight: bold;
}
.btn-secondary-light:hover {
  background-color: var(--border-color) !important;
}

.btn-secondary-outline {
  background-color: transparent !important;
  border: 1px solid rgba(255,255,255,0.2) !important;
  color: #fff !important;
  font-weight: bold;
}
.btn-secondary-outline:hover {
  border-color: var(--accent-color) !important;
  color: var(--accent-color) !important;
}

/* Responsive adjustment for Bookstore Promo */
@media (max-width: 992px) {
  .landing-bookstore-promo-container {
    flex-direction: column;
    gap: 40px;
    padding: 0 24px;
  }
  .bookstore-promo-visual {
    width: 100%;
  }
  .bookstore-promo-text h2 {
    font-size: 28px;
  }
}
@media (max-width: 640px) {
  .landing-bookstore-promo-section {
    padding: 60px 0;
  }
  .bookstore-actions {
    flex-direction: column;
    gap: 12px;
  }
}