/* --- FONTS loaded via Google Fonts CDN in index.html --- */

/* --- VARIABLES & RESET --- */
:root {
  --primary-color: #5c6bc0;
  --primary-hover: #3f51b5;
  --primary-light: #e8eaf6;
  --secondary-color: #37474f;
  --secondary-light: #546e7a;
  --success-color: #43a047;
  --success-hover: #388e3c;
  --danger-color: #e53935;
  --warning-color: #fb8c00;
  --bg-color: #f5f7fa;
  --sidebar-bg: #ffffff;
  --border-color: #e1e5eb;
  --border-light: #f0f2f5;
  --text-color: #2d3748;
  --text-light: #718096;
  --text-muted: #a0aec0;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
  --radius: 8px;
  --radius-sm: 4px;
  --radius-lg: 12px;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

*, *::before, *::after {
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  margin: 0;
  padding: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- LOADING STATE --- */
.is-loading {
  opacity: 0.6;
  pointer-events: none;
  cursor: not-allowed;
  position: relative;
}

.is-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* Hide spinner on buttons with text (they show "Loading..." etc) */
button.is-loading::after {
  display: none;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Loading state for images/covers */
.cover-carousel.is-loading img,
.cover-uploader.is-loading img {
  opacity: 0.5;
}

/* --- HEADER --- */
.app-header {
  background: var(--secondary-color);
  color: white;
  padding: 0 16px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  z-index: 20;
  gap: 16px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.app-header .logo {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.3px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding-right: 12px;
  border-right: 1px solid rgba(255,255,255,0.2);
}
.app-header .logo i {
  font-size: 1.2rem;
  opacity: 0.9;
}
.header-credit {
  font-family: 'EB Garamond', serif;
  font-size: 0.8rem;
  font-weight: 400;
  opacity: 0.6;
  white-space: nowrap;
}

/* Panel Toggle Buttons in Header */
.header-panel-toggles {
  display: flex;
  gap: 4px;
}

.panel-toggle-btn {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.8);
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.panel-toggle-btn:hover {
  background: rgba(255,255,255,0.2);
  color: white;
}

.panel-toggle-btn.active {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
}

/* Header Action Buttons */
.header-actions {
  display: flex;
  gap: 6px;
}
.btn-header {
  background-color: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  color: white;
  padding: 8px 14px;
  border-radius: var(--radius);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
  min-width: 75px;
  justify-content: center;
}
.btn-header:hover {
  background-color: rgba(255,255,255,0.2);
  transform: translateY(-1px);
}
/* Unsaved-file indicator dot on Save button */
#save-list-button {
  position: relative;
}
#save-list-button.has-unsaved::after {
  content: '';
  position: absolute;
  top: -3px;
  right: -3px;
  width: 8px;
  height: 8px;
  background-color: white;
  border-radius: 50%;
  pointer-events: none;
  animation: unsaved-pulse 2s ease-in-out infinite;
}
@keyframes unsaved-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.btn-header-primary {
  background-color: var(--success-color);
  border: none;
  color: white;
  padding: 8px 16px;
  border-radius: var(--radius);
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
  min-width: 120px;
  justify-content: center;
  font-weight: 600;
  box-shadow: 0 2px 4px rgba(67, 160, 71, 0.3);
}
.btn-header-primary:hover {
  background-color: var(--success-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(67, 160, 71, 0.4);
}

/* --- MAIN LAYOUT --- */
.app-container {
  display: flex;
  flex: 1;
  height: calc(100vh - 52px);
  overflow: hidden;
  background: var(--bg-color);
}

/* --- SIDEBAR (Collapsible Panel) --- */
.sidebar {
  width: 340px;
  background-color: var(--sidebar-bg);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  box-shadow: 2px 0 12px rgba(0,0,0,0.06);
  position: relative;
  transition: width var(--transition-normal), margin var(--transition-normal);
  z-index: 5;
}

.sidebar.collapsed {
  width: 0;
  margin-left: -1px;
  overflow: hidden;
}

/* Panel Toggle Button */
.panel-toggle {
  position: absolute;
  right: -36px;
  top: 12px;
  width: 32px;
  height: 32px;
  background: white;
  border: 1px solid var(--border-color);
  border-left: none;
  border-radius: 0 var(--radius) var(--radius) 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
  box-shadow: 2px 0 4px rgba(0,0,0,0.05);
  z-index: 10;
}

.panel-toggle:hover {
  background: var(--primary-light);
  color: var(--primary-color);
}

.sidebar.collapsed .panel-toggle {
  right: -36px;
}

.sidebar.collapsed .panel-toggle i::before {
  content: "\f054"; /* chevron-right */
}

/* Tabs - Now as vertical icons when in minimal mode */
.sidebar-tabs {
  display: flex;
  background: linear-gradient(to bottom, #fafbfc, #f5f6f8);
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
  padding: 0;
  gap: 0;
}
.tab-btn {
  background-color: transparent;
  border: none;
  outline: none;
  cursor: pointer;
  padding: 14px 16px;
  transition: all var(--transition-fast);
  font-size: 0.9rem;
  font-weight: 600;
  flex: 1;
  color: var(--text-light);
  border-bottom: 3px solid transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  position: relative;
}
.tab-btn i {
  font-size: 1.05rem;
}
.tab-btn:hover {
  color: var(--text-color);
  background-color: rgba(0,0,0,0.03);
}
.tab-btn.active {
  color: var(--primary-color);
  border-bottom: 3px solid var(--primary-color);
  background-color: white;
}

/* Tab Content - Fixed scrolling */
.tab-content {
  display: none;
  padding: 0;
  overflow-y: auto;
  overflow-x: hidden;
  flex: 1;
  min-height: 0; /* Critical for flex scroll */
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) transparent;
}
.tab-content::-webkit-scrollbar {
  width: 6px;
}
.tab-content::-webkit-scrollbar-track {
  background: transparent;
}
.tab-content::-webkit-scrollbar-thumb {
  background-color: var(--border-color);
  border-radius: 3px;
}
.tab-content::-webkit-scrollbar-thumb:hover {
  background-color: var(--text-muted);
}
.tab-content.active {
  display: flex;
  flex-direction: column;
}

/* Search Tab Specific */
#tab-search {
  padding: 16px;
}
#tab-search .sidebar-card {
  flex-shrink: 0;
}
.results-scroll-area {
  padding-bottom: 16px;
  flex: 1;
  overflow-y: auto;
}

/* Settings Tab - Scrollable container */
#tab-settings {
  padding: 12px;
}

/* Sidebar Card */
.sidebar-card {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.card-body { padding: 14px; }

/* --- UI COMPONENTS --- */
.btn {
  border: none;
  border-radius: var(--radius);
  padding: 10px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-decoration: none;
}
.btn-primary {
  background-color: var(--primary-color);
  color: white;
  box-shadow: 0 2px 4px rgba(92, 107, 192, 0.25);
}
.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(92, 107, 192, 0.35);
}
.btn-success {
  background-color: var(--success-color);
  color: white;
  box-shadow: 0 2px 4px rgba(67, 160, 71, 0.25);
}
.btn-success:hover {
  background-color: var(--success-hover);
  transform: translateY(-1px);
}
.btn-sm { padding: 6px 10px; font-size: 0.8rem; }
.btn-block { width: 100%; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }
.btn:active { transform: translateY(0); }

input[type="text"], input[type="number"], select, textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 0.85rem;
  box-sizing: border-box;
  transition: all var(--transition-fast);
  background-color: #fff;
  color: var(--text-color);
}
input:focus, select:focus, textarea:focus {
  border-color: var(--primary-color);
  outline: none;
  box-shadow: 0 0 0 3px var(--primary-light);
}
input[type="color"] {
  width: 32px;
  height: 32px;
  padding: 2px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: none;
  cursor: pointer;
  transition: border-color var(--transition-fast);
}
input[type="color"]:hover {
  border-color: var(--primary-color);
}

/* Search Form */
.search-form { display: flex; flex-direction: column; gap: 12px; }
.advanced-search-toggle summary {
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--primary-color);
  font-weight: 500;
  padding: 0;
}
.advanced-search-toggle summary:hover {
  color: var(--primary-hover);
}
.advanced-fields-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 8px;
  padding: 12px;
  background: var(--border-light);
  border-radius: var(--radius);
}

/* Results Grid */
#results-container {
  margin-top: 15px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
}

/* Main search result cards (scoped to avoid affecting modal) */
#results-container .book-card {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 10px;
  font-size: 0.8rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
  height: 372px;
}

#results-container .book-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

#results-container .book-card .cover-carousel {
  position: relative;
  width: 100%;
  max-width: 130px;
  height: 165px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #ccc;
  background: #fff;
}

#results-container .book-card .cover-carousel img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
}

#results-container .book-card .book-title {
  font-weight: bold;
  font-size: 0.85rem;
  margin: 8px 0 3px 0;
  line-height: 1.4;
  min-height: 2.4em;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

#results-container .book-card .book-author {
  font-size: 0.8rem;
  color: var(--text-light);
  margin: 0 0 8px 0;
  line-height: 1.4;
  min-height: 2.8em;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

#results-container .book-card .card-actions-group {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  margin-top: auto;
}

#results-container .book-card .carousel-controls {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.7rem;
}

#results-container .book-card .carousel-button {
  padding: 2px 6px;
  font-size: 0.65rem;
  background: #f8f9fa;
  border: 1px solid var(--border-color);
  border-radius: 3px;
  cursor: pointer;
}

#results-container .book-card .carousel-button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.add-to-list-button {
  width: 100%;
  padding: 6px 8px;
  font-size: 0.75rem;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s;
  min-height: 28px;
}

.add-to-list-button:hover {
  background: var(--primary-hover);
}

.add-to-list-button.added {
  background: var(--success-color);
}

/* Search Pagination */
.search-pagination {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 0 4px;
}
.pagination-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  font-size: 0.85rem;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s;
}
.pagination-button:hover:not(:disabled) {
  background: var(--primary-hover);
}
.pagination-button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.pagination-info {
  font-size: 0.8rem;
  color: var(--text-light);
  white-space: nowrap;
  margin: 0 6px;
}

/* --- SETTINGS GROUPS --- */
.form-group {
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-light);
}
.form-group:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.form-group > label {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-light);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}
.control-row { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.control-row:last-child { margin-bottom: 0; }
.checkbox-row { margin-top: 6px; }
.checkbox-row input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--primary-color);
  cursor: pointer;
}
.checkbox-row label {
  margin: 0;
  text-transform: none;
  font-weight: 500;
  color: var(--text-color);
  cursor: pointer;
  font-size: 0.9rem;
}
.btn-icon {
  width: 32px;
  height: 32px;
  background: #fff;
  border: 1px solid var(--border-color);
  font-weight: 700;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  font-size: 0.85rem;
}
.btn-icon:hover { border-color: var(--primary-color); }
.btn-icon.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}
.separator { border: 0; border-top: 1px solid var(--border-color); margin: 16px 0; }
.font-select { flex-grow: 2; }
.font-size-input { width: 58px; text-align: center; }
.mini-label { font-size: 0.75rem; color: var(--text-light); font-weight: 500; }

.advanced-settings summary {
  font-size: 0.9rem;
  cursor: pointer;
  color: var(--primary-color);
  font-weight: 500;
  padding: 6px 0;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
.advanced-settings summary::-webkit-details-marker { display: none; }
.advanced-settings summary::before {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid var(--primary-color);
  transition: transform var(--transition-fast);
}
.advanced-settings[open] summary::before {
  transform: rotate(180deg);
}
.advanced-settings summary:hover { color: var(--primary-hover); }
.advanced-settings summary:hover::before { border-top-color: var(--primary-hover); }
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  align-items: center;
  background: var(--border-light);
  padding: 10px;
  border-radius: var(--radius);
  margin-top: 8px;
}
.grid-2 label { margin: 0; font-size: 0.8rem; font-weight: 500; }

/* Settings Section Headers (collapsible) */
.settings-section {
  margin-bottom: 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background: white;
  flex-shrink: 0;
}
.settings-section > summary {
  padding: 12px 14px;
  background: var(--secondary-color);
  font-size: 0.9rem;
  font-weight: 600;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid transparent;
  transition: all var(--transition-fast);
  list-style: none;
  border-radius: var(--radius) var(--radius) 0 0;
}
.settings-section:not([open]) > summary {
  border-radius: var(--radius);
}
.settings-section > summary::-webkit-details-marker { display: none; }
.settings-section > summary::before {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 0.65rem;
  color: rgba(255, 255, 255, 0.8);
  transition: transform var(--transition-fast);
  width: 16px;
  text-align: center;
}
.settings-section[open] > summary::before {
  transform: rotate(180deg);
}
.settings-section > summary:hover {
  background: var(--secondary-light);
}
.settings-section[open] > summary {
  border-bottom: 1px solid var(--border-color);
}
.settings-section-content {
  padding: 12px;
  background: #fff;
}

/* --- MAIN CONTENT --- */
.main-content {
  flex: 1;
  background-color: var(--bg-color);
  overflow: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

/* Toolbar above preview */
.toolbar {
  width: 100%;
  max-width: 11in;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
  margin-left: auto;
  margin-right: auto;
  flex-shrink: 0;
  gap: 20px;
}

.toolbar-list-name {
  display: flex;
  align-items: center;
  gap: 8px;
}

.toolbar-list-name label {
  font-size: 0.9rem;
  color: var(--text-light);
  font-weight: 500;
  white-space: nowrap;
}

.list-name-input {
  width: 200px;
  padding: 6px 10px;
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background: white;
  color: var(--text-color);
  transition: all var(--transition-fast);
}

.list-name-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.list-name-input::placeholder {
  color: var(--text-muted);
}

.toolbar-hint {
  font-size: 0.9rem;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 8px;
}

.toolbar-hint i {
  color: var(--primary-color);
}

/* --- PREVIEW AREA --- */
#preview-area {
  position: relative;
  margin-left: auto;
  margin-right: auto;
  padding: 10px 0;
}

/* Page Preview Styling */
.page {
  width: 11in;
  height: 8.5in;
  background-color: white;
  border: none;
  border-radius: 4px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12), 0 2px 8px rgba(0,0,0,0.08);
  margin-bottom: 24px;
  position: relative;
  display: flex;
  transition: box-shadow var(--transition-normal);
}

.page:hover {
  box-shadow: 0 12px 40px rgba(0,0,0,0.15), 0 4px 12px rgba(0,0,0,0.1);
}

.panel {
  width: 50%; height: 100%; box-sizing: border-box;
  padding: 24px; position: relative; overflow: visible;
}
.page-divider {
  position: absolute; left: 50%; top: 0; bottom: 0; width: 1px;
  border-left: 1px dashed #ccc; transform: translateX(-0.5px);
}

.book-panel { display: flex; flex-direction: column; height: 100%; justify-content: space-between; }
#back-cover-panel.all-books { box-sizing: border-box; }
#inside-left-panel { align-items: flex-start; }
#inside-right-panel { align-items: flex-end; }
#back-cover-panel { display: flex; flex-direction: column; justify-content: space-between; }
#back-cover-panel > .list-item { align-self: flex-start; }

/* Book List Item */
.list-item {
  position: relative; display: flex; 
  gap: 10px; 
  align-items: flex-start;
  min-height: 132px; width: 100%; max-width: 480px;
  transition: background-color 0.2s;
}
.list-item:hover .list-item-controls { opacity: 1; }

.list-item.sortable-ghost { opacity: 0.4; background: #c8ebfb; }

/* --- DRAG CONTROLS --- */
.list-item-controls {
    position: absolute; top: 50%;
    transform: translateY(-50%);
    display: flex; flex-direction: column; align-items: center; 
    justify-content: center;
    gap: 6px;
    color: #888; right: 100%; margin-right: 4px;
    background-color: rgba(230, 230, 230, 0.85);
    padding: 8px 6px; border-radius: 4px;
    height: 145px;
    box-sizing: border-box;
}
.list-item-controls::after {
    content: ''; position: absolute; top: 0; bottom: 0; left: 100%;
    width: 10px; background: transparent;
}
.controls-right { 
  right: auto; left: 100%; margin-left: 4px; margin-right: 0; 
}
.controls-right::after { left: auto; right: 100%; }
.drag-handle { 
  cursor: grab; 
  font-size: 1.4rem; 
  line-height: 1; 
  color: #555;
  padding: 2px;
  border-radius: 3px;
}
.drag-handle:hover {
  background-color: rgba(0, 0, 0, 0.1);
}
.drag-handle:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}
.item-number,
.list-item-controls .item-number { 
  font-size: 1.1rem; 
  font-weight: bold; 
  color: #555; 
  width: 1.5em;
  text-align: center;
  border: 1px solid transparent;
  border-radius: 3px;
  background: transparent;
  padding: 0;
  margin: 0;
  cursor: pointer;
  -moz-appearance: textfield;
  line-height: inherit;
  box-shadow: none;
}
.item-number::-webkit-outer-spin-button,
.item-number::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.list-item-controls .item-number:hover {
  border-color: #aaa;
  background: rgba(255,255,255,0.7);
}
.list-item-controls .item-number:focus {
  outline: none;
  border-color: var(--primary-color);
  background: #fff;
  color: #333;
  box-shadow: none;
}
.delete-button { 
  background: none; 
  border: none; 
  color: #cc0000; 
  font-weight: bold; 
  font-size: 1.4rem; 
  line-height: 1; 
  padding: 0; 
  cursor: pointer;
}
.delete-button:hover {
  color: #990000;
}
.delete-button:focus {
  outline: 2px solid var(--danger-color);
  outline-offset: 2px;
}
.magic-button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--primary-color);
  font-size: 1.05rem;
  padding: 1px 0;
  transition: transform 0.2s;
}
.magic-button:hover {
  transform: scale(1.15);
}
.magic-button:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Star button for collage inclusion */
.star-button {
  background: none;
  border: none;
  cursor: pointer;
  color: #ccc;
  font-size: 1.05rem;
  padding: 1px 0;
  transition: color 0.2s, transform 0.2s;
}
.star-button:hover:not(.disabled) {
  transform: scale(1.15);
}
.star-button.active {
  color: #f1c40f;
}
.star-button.disabled {
  color: #ddd;
  cursor: not-allowed;
  opacity: 0.5;
}
.star-button:focus {
  outline: 2px solid #f1c40f;
  outline-offset: 2px;
}

/* Item Details */
/* RESTORED: Original cover uploader (no background) */
.cover-uploader {
  width: 110px; height: 132px; flex-shrink: 0; cursor: pointer;
  position: relative; display: flex; align-items: center; justify-content: center;
  border: 1px dashed #ccc;
  transition: border-color 0.2s, background-color 0.2s, border-width 0.15s;
}
.cover-uploader.drag-over {
  border: 2px solid var(--primary-color);
  background-color: var(--primary-light);
}
.cover-uploader img { max-width: 100%; max-height: 100%; object-fit: contain; }
.cover-uploader.stretch img { object-fit: fill; width: 100%; height: 100%; }
.cover-uploader input { display: none; }

.list-item-details { 
  flex-grow: 1; 
  display: flex; 
  flex-direction: column; 
  /* RESTORED: Fixed width to match original wrapping behavior */
  width: 360px; 
}

/* RESTORED: Visible borders on editable fields */
.editable-field {
  width: 100%;
  border: none;
  outline: 1px solid #eee;
  background: transparent;
  padding: 0; margin: 0; line-height: 1.1;
  box-sizing: border-box; transition: outline-color 0.2s;
  overflow: visible;
}
.editable-field:hover { outline-color: #999; }
.editable-field:focus { outline-color: #999; }

.title-field { font-family: var(--title-font); color: var(--title-color); font-size: var(--title-font-size); font-weight: var(--title-font-weight); font-style: var(--title-font-style); margin-bottom: 0; }
.author-field { font-family: var(--author-font); color: var(--author-color); font-size: var(--author-font-size); font-weight: var(--author-font-weight); font-style: var(--author-font-style); margin-top: 2px; margin-bottom: 0; }
.description-field {
  font-family: var(--desc-font); color: var(--desc-color); font-size: var(--desc-font-size); font-weight: var(--desc-font-weight); font-style: var(--desc-font-style);
  margin-top: 2px; flex: 1;
  /* RESTORED: Original wrapping rules */
  overflow-wrap: break-word;
  word-break: break-word;
  -webkit-hyphens: none; -ms-hyphens: none; hyphens: none;
  resize: none;
}

/* Front Cover */
#front-cover-uploader {
  width: 480px; height: 768px; border: 1px dashed #ccc; background-color: #eaeaea;
  display: flex; align-items: center; justify-content: center; cursor: pointer; position: relative; margin: 0 auto;
  transition: border-color 0.2s, background-color 0.2s;
}
#front-cover-uploader.drag-over {
  border-color: var(--primary-color);
  background-color: var(--primary-light);
  border-style: solid;
}
#front-cover-uploader.has-image { border: none; background: none; }
#front-cover-uploader.has-image.drag-over { border: 2px solid var(--primary-color); }
#front-cover-uploader.has-image .placeholder-text { display: none; }
.placeholder-text {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  color: #333; text-align: center; font-size: 1.1rem; line-height: 1.4;
  pointer-events: none; width: 80%; z-index: 1;
}
#front-cover-uploader img { max-width: 100%; max-height: 100%; object-fit: contain; }
#front-cover-uploader:not(.has-image) img { display: none; }

/* Cover Header Text section in settings panel */
#cover-header-text-group #cover-simple-mode {
  display: block;
  margin-top: 8px;
}
#cover-header-text-group #cover-simple-mode.hidden {
  display: none;
}
#cover-header-text-group #cover-simple-mode textarea {
  width: 100%;
  padding: 10px;
  box-sizing: border-box;
  resize: vertical;
  text-align: center;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 0.95rem;
}

/* Advanced mode line inputs in settings panel */
#cover-header-text-group #cover-advanced-mode {
  display: none;
  flex-direction: column;
  gap: 6px;
  width: 100%;
  margin-top: 8px;
}
#cover-header-text-group #cover-advanced-mode.visible {
  display: flex;
}
.cover-line-input {
  width: 100%;
  padding: 10px;
  font-size: 0.95rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  text-align: center;
  background: rgba(255, 255, 255, 0.95);
  box-sizing: border-box;
}
.cover-line-input::placeholder {
  color: #888;
}
.cover-line-input:focus {
  border-color: var(--primary-color);
  outline: none;
}

/* Style control visibility */
#cover-simple-style {
  display: block;
}
#cover-simple-style.hidden {
  display: none;
}
#cover-advanced-style {
  display: none;
}
#cover-advanced-style.visible {
  display: block;
}

/* Line style groups in settings - matches data-style-group boxes exactly */
.line-style-group {
  background: var(--border-light);
  padding: 10px 12px;
  border-radius: var(--radius);
  margin-bottom: 10px;
  border: 1px solid var(--border-color);
}
.line-style-label {
  display: block;
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-light);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}
.line-style-group .control-row {
  margin-bottom: 6px;
}
.line-style-group .control-row:last-child {
  margin-bottom: 0;
}
.line-style-group .font-select {
  flex: 1;
}
.line-style-group .font-size-input {
  width: 60px;
}

/* --- LAYOUT SELECTOR (in Settings tab) --- */
#collage-layout-details {
  margin-top: 8px;
}

#collage-layout-selector {
  display: flex;
  gap: 10px;
  flex-wrap: nowrap;
  padding: 12px;
  justify-content: center;
  background: var(--border-light);
  border-radius: var(--radius);
}

.layout-option {
  width: 52px;
  height: 68px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: white;
  transition: all var(--transition-fast);
  padding: 4px;
  overflow: hidden;
}

.layout-option:hover {
  border-color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.layout-option.selected {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px var(--primary-light);
  background: linear-gradient(to bottom, #fff, var(--primary-light));
}

.layout-option svg {
  width: 30px;
  height: 38px;
  fill: var(--text-muted);
  transition: fill var(--transition-fast);
}

.layout-option:hover svg {
  fill: var(--secondary-light);
}

.layout-option.selected svg {
  fill: var(--primary-color);
}

.layout-option-label {
  font-size: 0.55rem;
  color: var(--text-light);
  margin-top: 3px;
  text-align: center;
  line-height: 1.1;
  font-weight: 500;
}

.layout-option.selected .layout-option-label {
  color: var(--primary-color);
  font-weight: 700;
}

/* Masonry layout: disabled stretch toggle */
.checkbox-row.disabled {
  opacity: 0.5;
  pointer-events: none;
}

.checkbox-row.disabled label {
  cursor: not-allowed;
}

.masonry-hint {
  transition: opacity var(--transition-fast);
}

/* Branding & QR */
.custom-uploader {
  width: 480px; height: 144px; border: 1px dashed #ccc;
  display: flex; align-items: center; justify-content: center; cursor: pointer;
  position: relative;
  transition: border-color 0.2s, background-color 0.2s;
}
.custom-uploader.drag-over {
  border-color: var(--primary-color);
  background-color: var(--primary-light);
  border-style: solid;
}
.custom-uploader input[type="file"] { display: none; }
.custom-uploader img { max-height: 100%; max-width: 100%; }

.branding-delete-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--danger-color);
  color: white;
  border: none;
  cursor: pointer;
  font-size: 0.75rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  opacity: 0.8;
  transition: opacity 0.2s;
}
.branding-delete-btn:hover {
  opacity: 1;
}
.print-mode .branding-delete-btn {
  display: none !important;
}

/* Front cover delete button */
.cover-delete-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--danger-color);
  color: white;
  border: none;
  cursor: pointer;
  font-size: 0.75rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  opacity: 0.8;
  transition: opacity 0.2s;
  z-index: 2;
}
.cover-delete-btn:hover {
  opacity: 1;
}
.print-mode .cover-delete-btn {
  display: none !important;
}
#front-cover-uploader:not(.has-image) .cover-delete-btn { display: none; }

/* Use Default branding button */
.branding-default-btn {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--radius);
  padding: 6px 12px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  opacity: 0.9;
  transition: opacity 0.2s, background-color 0.2s;
}
.branding-default-btn:hover {
  opacity: 1;
  background: var(--primary-hover);
}
.print-mode .branding-default-btn {
  display: none !important;
}
/* Only show Use Default when there's no image */
#branding-uploader.has-image .branding-default-btn { display: none; }
#branding-uploader.has-image.drag-over { border: 2px solid var(--primary-color); border-style: solid; }

#branding-uploader .placeholder-text {
  position: absolute;
  top: 45%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--text-light);
  text-align: center;
  font-size: 0.9rem;
  line-height: 1.4;
  pointer-events: none;
}
#branding-uploader.has-image .placeholder-text { display: none; }
#branding-uploader:not(.has-image) img { display: none; }
#branding-uploader:not(.has-image) .branding-delete-btn { display: none; }

.qr-code-container {
  width: 480px; height: 144px; display: flex; gap: 14px; align-items: center;
  border: 1px solid transparent; padding: 0; box-sizing: border-box;
}
#qr-code-text {
  flex-grow: 1; height: 100%; display: flex; flex-direction: column;
  justify-content: center; text-align: center;
  border: 1px solid #eee; padding: 4px; box-sizing: border-box;
  font-family: var(--qr-font, 'Calibri'); 
  font-size: var(--qr-font-size, 13pt); 
  color: var(--qr-color, #000);
  font-weight: var(--qr-font-weight, normal);
  font-style: var(--qr-font-style, normal);
  line-height: var(--qr-line-height, 1.3);
}
#qr-code-text:hover { border-color: #ccc; }
#qr-code-canvas {
  width: 144px; height: 144px; flex-shrink: 0; display: flex; align-items: center; justify-content: center;
}
#qr-code-canvas img, #qr-code-canvas canvas {
  width: 100%; height: 100%;
}

/* --- PRINT MODE --- */
.print-mode .page { box-shadow: none; border: none !important; outline: none; }
.print-mode .panel { padding: 24px; border: none !important; }
.print-mode .book-panel { padding-bottom: 27px; }
.print-mode #back-cover-panel.all-books { padding-bottom: 27px; }
.print-mode .list-item-controls, .print-mode .page-divider, .print-mode .placeholder-text { display: none !important; }
.print-mode .cover-uploader, .print-mode .custom-uploader, .print-mode .editable-field, .print-mode #front-cover-uploader, .print-mode #qr-code-text, .print-mode .qr-code-container {
  border: none !important; outline: none !important; background: transparent !important;
}

/* --- NOTIFICATION --- */
#notification-area {
  position: fixed; top: 0; left: 0; width: 100%; padding: 0 16px;
  text-align: center; color: white; background: var(--danger-color);
  transform: translateY(-100%); transition: transform 0.3s, visibility 0.3s; z-index: 1000;
  visibility: hidden;
  height: 52px;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
}
#notification-area.show { transform: translateY(0); visibility: visible; }
#notification-area.success { background: var(--success-color); }
#notification-area.info { background: var(--primary-color); }

/* Preloader & Carousel */
.font-preloader { position: absolute; top: -9999px; visibility: hidden; }
.cover-carousel {
  position: relative; width: 100%; max-width: 150px; height: 180px;
  margin: 0 auto; display: flex; align-items: center; justify-content: center;
  border: 1px solid #ccc; background: #fff;
}
.cover-carousel img {
  width: auto; height: auto; max-width: 100%; max-height: 100%;
  object-fit: contain; display: block;
}
.card-actions-group { margin-top: auto; padding-top: 10px; }
.carousel-controls { display: flex; flex-direction: column; align-items: center; gap: 4px; max-width: 90px; margin: 0 auto 10px auto; }
.carousel-buttons-container { display: flex; justify-content: space-between; width: 100%; gap: 4px; }
.carousel-button { background: #f0f0f0; border: 1px solid #ccc; padding: 4px; cursor: pointer; border-radius: 3px; font-size: 1.2em; font-weight: bold; display: flex; align-items: center; justify-content: center; height: auto; min-width: 0; width: calc(50% - 2px); }
.carousel-button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.carousel-button:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* --- ACCESSIBILITY: Focus Indicators --- */
.tab-btn:focus-visible,
.btn:focus,
.btn-header:focus,
.btn-header-primary:focus,
.add-to-list-button:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Skip link (hidden until focused) */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary-color);
  color: white;
  padding: 8px 16px;
  z-index: 1001;
  text-decoration: none;
  font-weight: 600;
}
.skip-link:focus {
  top: 0;
}

/* Screen reader only text */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Live region for screen reader announcements */
[aria-live] {
  position: relative;
}

/* --- CUSTOM FONT DROPDOWN --- */
.custom-font-dropdown {
  position: relative;
  flex: 1;
  min-width: 0;
}

.custom-font-dropdown-trigger {
  width: 100%;
  padding: 6px 28px 6px 8px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 0.85rem;
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M2 4l4 4 4-4'/%3E%3C/svg%3E") no-repeat right 8px center;
  cursor: pointer;
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  box-sizing: border-box;
  transition: border-color 0.2s;
}

.custom-font-dropdown-trigger:hover {
  border-color: #999;
}

.custom-font-dropdown-trigger:focus {
  border-color: var(--primary-color);
  outline: none;
  box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.custom-font-dropdown.open .custom-font-dropdown-trigger {
  border-color: var(--primary-color);
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
}

.custom-font-dropdown-list {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  max-height: 280px;
  overflow-y: auto;
  background: #fff;
  border: 1px solid var(--primary-color);
  border-top: none;
  border-bottom-left-radius: var(--radius);
  border-bottom-right-radius: var(--radius);
  box-shadow: var(--shadow-md);
  z-index: 1000;
  margin: 0;
  padding: 0;
  list-style: none;
}

.custom-font-dropdown.open .custom-font-dropdown-list {
  display: block;
}

.custom-font-dropdown-option {
  padding: 8px 10px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background-color 0.1s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.custom-font-dropdown-option:hover,
.custom-font-dropdown-option.highlighted {
  background-color: #e8f4fc;
}

.custom-font-dropdown-option.selected {
  background-color: var(--primary-color);
  color: white;
}

.custom-font-dropdown-option.selected:hover,
.custom-font-dropdown-option.selected.highlighted {
  background-color: var(--primary-hover);
}

/* Hide original select when custom dropdown is active */
.font-select.has-custom-dropdown {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --- BOOK BLOCK STYLE GROUPS (match Line Style dimensions) --- */
/* --- BOOK BLOCK STYLE GROUPS (consistent styling for all) --- */
[data-style-group="title"],
[data-style-group="author"],
[data-style-group="desc"],
[data-style-group="qr"] {
  background: var(--border-light);
  padding: 10px 12px !important;
  border-radius: var(--radius);
  margin-bottom: 10px;
  border: 1px solid var(--border-color);
}

[data-style-group="title"] > label,
[data-style-group="author"] > label,
[data-style-group="desc"] > label,
[data-style-group="qr"] > label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-light);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

[data-style-group="title"] .control-row,
[data-style-group="author"] .control-row,
[data-style-group="desc"] .control-row,
[data-style-group="qr"] .control-row {
  margin-bottom: 6px;
}

[data-style-group="title"] .control-row:last-child,
[data-style-group="author"] .control-row:last-child,
[data-style-group="desc"] .control-row:last-child,
[data-style-group="qr"] .control-row:last-child {
  margin-bottom: 0;
}

[data-style-group="title"] .font-select,
[data-style-group="author"] .font-select,
[data-style-group="desc"] .font-select,
[data-style-group="qr"] .font-select,
[data-style-group="title"] .custom-font-dropdown,
[data-style-group="author"] .custom-font-dropdown,
[data-style-group="desc"] .custom-font-dropdown,
[data-style-group="qr"] .custom-font-dropdown {
  flex: 1;
}

[data-style-group="title"] .font-size-input,
[data-style-group="author"] .font-size-input,
[data-style-group="desc"] .font-size-input,
[data-style-group="qr"] .font-size-input {
  width: 60px;
}

/* --- COVER SIMPLE STYLE (match Line Style Group appearance) --- */
/* Cover Simple Style - matches data-style-group boxes */
#cover-simple-style {
  background: var(--border-light);
  padding: 10px 12px;
  border-radius: var(--radius);
  margin-bottom: 10px;
  border: 1px solid var(--border-color);
}

#cover-simple-style .control-row {
  margin-bottom: 6px;
}

#cover-simple-style .control-row:last-child {
  margin-bottom: 0;
}

#cover-simple-style .font-select,
#cover-simple-style .custom-font-dropdown {
  flex: 1;
}

#cover-simple-style .font-size-input {
  width: 60px;
}

/* --- EXTRA COLLAGE COVERS SECTION --- */
.extra-covers-section {
  margin-top: 14px;
  padding: 12px;
  background: var(--border-light);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
}

.extra-covers-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.extra-covers-hint {
  font-size: 0.75rem;
  color: var(--text-light);
  margin: 0 0 10px 0;
}

.extra-covers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.extra-cover-slot {
  aspect-ratio: 2/3;
  border: 2px dashed var(--border-color);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  background: #fff;
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s, background-color 0.2s;
}

.extra-cover-slot:hover {
  border-color: var(--primary-color);
  background-color: #f0f7ff;
}

.extra-cover-slot.drag-over {
  border-color: var(--primary-color);
  background-color: var(--primary-light);
  border-style: solid;
}

.extra-cover-slot.has-cover {
  border-style: solid;
  border-color: var(--border-color);
}

.extra-cover-slot.has-cover:hover {
  border-color: var(--primary-color);
}

.extra-cover-slot .slot-placeholder {
  font-size: 1.5rem;
  color: #ccc;
}

.extra-cover-slot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.extra-cover-slot .remove-btn {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--danger-color);
  color: white;
  border: none;
  cursor: pointer;
  font-size: 0.7rem;
  line-height: 1;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.extra-cover-slot.has-cover:hover .remove-btn {
  display: flex;
}

.extra-cover-slot.from-list {
  border-color: var(--primary-color);
  cursor: default;
}

.extra-cover-slot.from-list:hover {
  transform: none;
  box-shadow: none;
}

.from-list-label {
  position: absolute;
  bottom: 2px;
  left: 2px;
  background: var(--primary-color);
  color: white;
  font-size: 0.6rem;
  font-weight: 600;
  padding: 1px 4px;
  border-radius: 2px;
}

.extra-drag-handle {
  position: absolute;
  top: 2px;
  left: 2px;
  background: rgba(0,0,0,0.5);
  color: white;
  font-size: 0.6rem;
  padding: 1px 3px;
  border-radius: 2px;
  cursor: grab;
  opacity: 0;
  transition: opacity 0.2s;
  line-height: 1;
}

.extra-cover-slot.draggable-extra:hover .extra-drag-handle {
  opacity: 1;
}

.extra-cover-slot.draggable-extra .extra-drag-handle:active {
  cursor: grabbing;
}

.extra-cover-slot.sortable-ghost {
  opacity: 0.4;
}

.extra-cover-slot input[type="file"] {
  display: none;
}

/* --- MODAL STYLES --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(45, 55, 72, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}

.modal-content {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
  width: 90%;
  max-width: 520px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  background: linear-gradient(to bottom, #fafbfc, #f5f6f8);
}

.modal-header h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--secondary-color);
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-muted);
  padding: 4px;
  line-height: 1;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  color: var(--danger-color);
  background: rgba(229, 57, 53, 0.1);
}

.modal-body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
}

.modal-search-form {
  display: block;
  margin-bottom: 15px;
}

.modal-search-results {
  min-height: 200px;
  max-height: 400px;
  overflow-y: auto;
}

.modal-search-placeholder {
  color: #888;
  text-align: center;
  padding: 40px 20px;
}

.modal-results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 10px;
  padding: 5px;
}

/* Modal cover result cards - matching main search dimensions */
.modal-cover-result.book-card {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 8px;
  font-size: 0.8rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
  height: 332px;
}

.modal-cover-result.book-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.modal-cover-result.book-card .cover-carousel {
  position: relative;
  width: 100%;
  max-width: 110px;
  height: 140px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #ccc;
  background: #fff;
}

.modal-cover-result.book-card .cover-carousel img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
}

.modal-cover-result.book-card .book-title {
  font-weight: bold;
  font-size: 0.85rem;
  margin: 6px 0 3px 0;
  line-height: 1.4;
  min-height: 2.8em;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.modal-cover-result.book-card .book-author {
  font-size: 0.8rem;
  color: var(--text-light);
  margin: 0 0 6px 0;
  line-height: 1.4;
  min-height: 2.8em;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.modal-cover-result.book-card .card-actions-group {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.modal-cover-result.book-card .carousel-controls {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.65rem;
}

.modal-cover-result.book-card .carousel-button {
  padding: 1px 5px;
  font-size: 0.6rem;
  background: var(--bg-light);
  border: 1px solid var(--border-color);
  border-radius: 3px;
  cursor: pointer;
}

.modal-cover-result.book-card .carousel-button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.modal-cover-result.book-card .add-to-collage-button {
  width: 100%;
  padding: 5px 8px;
  font-size: 0.7rem;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s;
  min-height: 26px;
}

.modal-cover-result.book-card .add-to-collage-button:hover {
  background: var(--primary-hover);
}

.modal-cover-result.book-card .add-to-collage-button.added {
  background: var(--success-color);
}

.modal-cover-result.book-card .add-to-collage-button:disabled {
  opacity: 0.7;
  cursor: wait;
}

/* Modal search form styling */
.modal-search-form {
  margin-bottom: 12px;
}

.modal-search-form .search-row {
  display: flex;
  gap: 8px;
}

.modal-search-form .search-row input[type="text"] {
  flex: 1;
  padding: 8px 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 0.9rem;
}

.modal-search-form .search-row .btn {
  padding: 8px 16px;
  white-space: nowrap;
  flex-shrink: 0;
}

.modal-search-form .advanced-search-toggle {
  margin-top: 8px;
}

.modal-search-form .advanced-search-toggle summary {
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--primary-color);
  padding: 4px 0;
}

.modal-search-form .advanced-fields-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-top: 6px;
}

.modal-search-form .advanced-fields-grid input {
  padding: 6px 8px;
  font-size: 0.8rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
}

.modal-footer {
  padding: 15px 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-footer .cover-count {
  font-size: 0.85rem;
  color: var(--text-light);
}

.modal-footer .btn {
  min-width: 80px;
}

/* =========================================================================
   Zoom & Undo/Redo Controls (floating bottom-right toolbar)
   ========================================================================= */

.zoom-controls {
  position: fixed;
  bottom: 16px;
  right: 16px;
  display: flex;
  align-items: center;
  gap: 2px;
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  z-index: 10;
  padding: 4px;
}

.zoom-btn {
  width: 36px;
  height: 36px;
  border: none;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--text-color);
  font-size: 0.85rem;
  transition: background var(--transition-fast);
}

.zoom-btn:hover:not(:disabled) {
  background: var(--border-light);
}

.zoom-btn:disabled {
  opacity: 0.4;
  cursor: default;
}

.zoom-label {
  min-width: 54px;
  height: 36px;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-light);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
  font-family: inherit;
}

.zoom-label:hover {
  background: var(--border-light);
  color: var(--text-color);
}