/* ===== RESET / BASE ===== */
:root {
  --base-font-size: 16px;
}

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

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: var(--base-font-size);
  color: #1e2233;
  background: radial-gradient(circle at top, #e0f2fe 0%, #f5f7fb 45%, #e5e7eb 100%);
  position: relative;
  min-height: 100vh;
  transition: background 0.5s ease;
}

.hidden {
  display: none !important;
}

.muted {
  color: #999;
  font-style: italic;
}

/* ===== HEADER ===== */
.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  background: linear-gradient(120deg, #1b7fff, #9333ea);
  color: #fff;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  font-size: 2rem;
}

.logo-text h1 {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 700;
}

.logo-text p {
  margin: 0;
  font-size: 0.85rem;
  opacity: 0.8;
}

.search-area {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  max-width: 500px;
  margin: 0 1rem;
}

.nav-btn {
  background: #f3f4f6;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  padding: 0.5rem 0.8rem;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.2s;
}

.nav-btn:hover {
  background: #e5e7eb;
  border-color: #9ca3af;
}

.nav-btn:active {
  transform: scale(0.95);
}

.more-btn {
  width: 100%;
  margin-top: 0.5rem;
  padding: 0.5rem;
  background: #f3f4f6;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.2s;
}

.more-btn:hover {
  background: #e5e7eb;
}

.search-area input {
  flex: 1;
  padding: 0.4rem 0.6rem;
  border-radius: 999px;
  border: none;
  outline: none;
}

.search-area button {
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
  border: none;
  cursor: pointer;
  font-weight: 600;
}

.user-area {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.plan-badge {
  background: rgba(255, 255, 255, 0.18);
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  font-size: 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.user-area button {
  border-radius: 999px;
  padding: 0.3rem 0.8rem;
  border: none;
  cursor: pointer;
  font-size: 0.85rem;
}

/* ===== LAYOUT ===== */
.layout {
  display: grid;
  grid-template-columns: 240px 1fr 280px;
  gap: 0;
  min-height: calc(100vh - 64px);
}

/* left sidebar */
.sidebar {
  padding: 1rem;
  border-right: 1px solid #dbe2f0;
  background: #ffffff;
}

.sidebar h2 {
  font-size: 1rem;
  margin-top: 0;
}

.genre-list {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0;
}

.genre-list li {
  padding: 0.25rem 0.3rem;
  cursor: pointer;
  font-size: 0.9rem;
  border-radius: 6px;
}

.genre-list li:hover,
.genre-list li.active {
  background: #e0edff;
  color: #1744a5;
  font-weight: 600;
}

.sidebar-section {
  margin-top: 1.25rem;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
}

.small-text {
  font-size: 0.85rem;
  color: #555b73;
}

/* main */
.content {
  padding: 1.5rem;
  overflow-y: auto;
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.section-header h2 {
  margin: 0;
}

.muted {
  color: #6b7280;
  font-size: 0.9rem;
}

/* right panel */
.right-panel-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  z-index: 39;
}

.right-panel-overlay.hidden {
  display: none;
}

.right-panel {
  border-left: 1px solid #dbe2f0;
  background: #fafbff;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease;
  overflow-y: auto;
}

.right-panel.hidden {
  transform: translateX(100%);
  pointer-events: none;
}

.panel-tabs {
  display: flex;
  gap: 0.5rem;
  margin: 1rem 0;
  border-bottom: 2px solid #e5e7eb;
}

.panel-tab {
  flex: 1;
  padding: 0.5rem;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.2s;
}

.panel-tab.active {
  border-bottom-color: #1b7fff;
  color: #1b7fff;
  font-weight: 600;
}

.panel-tab:hover {
  background: #f3f4f6;
}

.panel-tab-content {
  display: none;
  flex: 1;
  overflow-y: auto;
}

.panel-tab-content.active {
  display: block;
}

.activity-section {
  margin-bottom: 1.5rem;
}

.activity-section h3 {
  font-size: 0.95rem;
  margin: 0 0 0.5rem 0;
  color: #374151;
}

.stat-box {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 0.75rem;
}

.stat-item {
  display: flex;
  justify-content: space-between;
  padding: 0.4rem 0;
  border-bottom: 1px solid #f3f4f6;
}

.stat-item:last-child {
  border-bottom: none;
}

.stat-label {
  font-size: 0.85rem;
  color: #6b7280;
}

.stat-value {
  font-size: 0.85rem;
  font-weight: 600;
  color: #111827;
}

.settings-section {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid #e5e7eb;
}

.settings-section:last-child {
  border-bottom: none;
}

.settings-section h3 {
  font-size: 0.95rem;
  margin: 0 0 0.75rem 0;
  color: #374151;
}

.setting-item {
  margin-bottom: 1.25rem;
}

.setting-item label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: #374151;
  margin-bottom: 0.25rem;
}

.setting-item p {
  margin: 0;
  font-size: 0.85rem;
}

.setting-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: #374151;
  margin-bottom: 0.5rem;
}

.setting-description {
  font-size: 0.8rem;
  color: #6b7280;
  margin: 0.25rem 0 0 1.75rem;
  line-height: 1.4;
}

.font-size-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.font-btn {
  background: #3b82f6;
  color: white;
  border: none;
  border-radius: 6px;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.font-btn:hover {
  background: #2563eb;
}

.font-btn:active {
  transform: scale(0.95);
}

#fontSizeDisplay {
  font-size: 1rem;
  font-weight: 600;
  color: #374151;
  min-width: 45px;
  text-align: center;
}

.theme-toggle {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.theme-toggle-btn {
  flex: 1;
  padding: 0.75rem 1rem;
  background: #f3f4f6;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.theme-toggle-btn:hover {
  background: #e5e7eb;
}

.theme-toggle-btn.active {
  background: #3b82f6;
  color: white;
  border-color: #3b82f6;
}

/* Guest Panel */
.guest-message {
  padding: 1.5rem;
  text-align: center;
}

.guest-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.guest-message h3 {
  margin: 0 0 0.5rem 0;
  color: #1e2233;
}

.guest-message h4 {
  margin: 0 0 0.5rem 0;
  font-size: 1rem;
  color: #374151;
}

.guest-features-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
  text-align: left;
}

.guest-features-list li {
  padding: 0.5rem;
  margin-bottom: 0.25rem;
  background: #f9fafb;
  border-radius: 6px;
  font-size: 0.9rem;
}

.guest-basic-list {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0 0;
  text-align: left;
  font-size: 0.85rem;
}

.guest-basic-list li {
  padding: 0.35rem 0;
  color: #6b7280;
}

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

.right-panel-header h2 {
  margin: 0;
}

.right-panel-header button {
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 1.3rem;
  color: #6b7280;
  padding: 0.25rem 0.5rem;
}

.right-panel-header button:hover {
  color: #111827;
}

.right-panel-content {
  margin-top: 0.75rem;
  font-size: 0.88rem;
}

.mini-book-list {
  list-style: none;
  padding: 0;
  margin: 0.3rem 0 1rem;
}

.mini-book-list li {
  padding: 0.25rem 0;
}

/* ===== BOOK GRID ===== */
.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 1rem;
}

.book-card {
  background: #ffffff;
  border-radius: 12px;
  padding: 0.75rem;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.06);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.book-cover {
  width: 100%;
  height: 190px;
  border-radius: 10px;
  background: linear-gradient(135deg, #1b7fff, #f97316, #e11d48);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 1.2rem;
  margin-bottom: 0.3rem;
  overflow: hidden;
  position: relative;
}

.book-cover img,
.book-cover canvas {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
}

.book-title {
  font-size: 0.95rem;
  font-weight: 600;
}

.book-author {
  font-size: 0.85rem;
  color: #6b7280;
}

.language-badge {
  display: inline-block;
  padding: 3px 8px;
  margin-top: 5px;
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  color: white;
  font-size: 0.7rem;
  font-weight: 600;
  border-radius: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.book-meta {
  font-size: 0.8rem;
  color: #6b7280;
  display: flex;
  justify-content: space-between;
}

.book-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.3rem;
}

.book-actions button {
  flex: 1;
  min-width: 45%;
  padding: 0.35rem 0.4rem;
  font-size: 0.8rem;
  border-radius: 999px;
  border: none;
  cursor: pointer;
}

.book-download-btn {
  flex: 0 0 calc(50% - 0.2rem);
  text-align: center;
  border-radius: 999px;
  padding: 0.35rem 0.4rem;
  font-size: 0.75rem;
  border: 1px solid #1b7fff;
  text-decoration: none;
  color: #1b7fff;
  background: #ffffff;
  cursor: pointer;
  display: inline-block;
  font-weight: 500;
  transition: all 0.2s;
}

.book-download-btn:hover {
  background: #e0edff;
  border-color: #1744a5;
  color: #1744a5;
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(27, 127, 255, 0.2);
}

.book-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  font-size: 0.7rem;
  padding: 0.15rem 0.4rem;
  border-radius: 999px;
  background: #e5e7eb;
}

/* Buttons */
.primary-btn {
  background: linear-gradient(120deg, #1b7fff, #9333ea);
  color: #fff;
  border: none;
  cursor: pointer;
  font-weight: 600;
}

.primary-btn:hover {
  opacity: 0.95;
}

.full-width {
  width: 100%;
}

/* ===== MODAL / READER ===== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
}

.modal-backdrop.hidden {
  display: none;
}

.modal {
  background: #ffffff;
  width: min(1000px, 95vw);
  max-height: 90vh;
  border-radius: 16px;
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #e5e7eb;
  padding-bottom: 0.5rem;
}

.modal-header h2 {
  margin: 0;
}

.reader-header-content {
  display: flex;
  align-items: center;
  gap: 1rem;
}

#readerBookCover {
  width: 80px;
  height: 120px;
  object-fit: cover;
  border-radius: 6px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.3);
  flex-shrink: 0;
  background: #f3f4f6;
  display: block;
}

.modal-header button {
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 1.5rem;
  padding: 0.25rem 0.5rem;
  color: #6b7280;
  transition: all 0.2s;
  z-index: 999;
  position: relative;
  pointer-events: auto;
  min-width: 36px;
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-header button:hover {
  color: #ef4444;
  background: #fee2e2;
  border-radius: 4px;
}

.modal-header button:active {
  transform: scale(0.95);
}

.reader-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1rem;
  padding-top: 0.75rem;
  overflow-y: auto;
  max-height: calc(90vh - 100px);
}

.reader-main {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.progress-bar {
  width: 100%;
  height: 6px;
  border-radius: 999px;
  background: #e5e7eb;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(120deg, #1b7fff, #22c55e);
}

.reader-page {
  margin-top: 0.5rem;
  padding: 0.75rem;
  border-radius: 12px;
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  flex: 1;
  overflow: auto;
  font-size: 0.95rem;
  line-height: 1.6;
  max-height: 70vh;
}

#pdfView {
  position: relative;
  max-width: 700px;
  margin: 0 auto;
  transform-origin: top center;
  transition: transform 0.2s ease;
}

#pdfCanvas {
  display: block;
  margin: 0 auto;
  max-width: 100%;
  height: auto;
  transform: scale(0.8);
  transform-origin: top center;
  transition: opacity 0.3s ease;
}

#pdfCanvas.hidden-for-text {
  opacity: 0.05;
}

.pdf-text-layer {
  position: absolute;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  overflow: hidden;
  opacity: 0.01;
  line-height: 1.2;
  pointer-events: auto;
  mix-blend-mode: normal;
  width: 100%;
}

.pdf-text-layer > div {
  color: transparent !important;
  position: absolute;
  white-space: pre;
  cursor: text;
  transform-origin: 0% 0%;
  -webkit-user-select: text;
  -moz-user-select: text;
  -ms-user-select: text;
  user-select: text;
  pointer-events: auto;
}

.pdf-text-layer ::selection {
  background: rgba(255, 235, 59, 0.5) !important;
  color: inherit;
}

/* Highlight overlays */
.highlight-overlay {
  padding: 2px 0;
  border-radius: 2px;
  cursor: pointer;
}

.highlight-overlay.highlight-yellow {
  background-color: rgba(255, 235, 59, 0.6);
}

.highlight-overlay.highlight-blue {
  background-color: rgba(33, 150, 243, 0.4);
}

.highlight-overlay.highlight-green {
  background-color: rgba(76, 175, 80, 0.4);
}

.highlight-overlay.highlight-orange {
  background-color: rgba(255, 152, 0, 0.5);
}

.highlight-overlay.highlight-pink {
  background-color: rgba(233, 30, 99, 0.4);
}

/* Show text layer with visible text when custom fonts are active */
/* Removed visible-text class to prevent double text display */

#epubContainer {
  overflow: auto !important;
}

.reader-controls {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.7rem;
}

.reader-controls button {
  border-radius: 999px;
  border: none;
  padding: 0.35rem 0.8rem;
  cursor: pointer;
}

.bookmark-btn {
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
  color: white;
  font-weight: 500;
  transition: all 0.2s;
  pointer-events: auto;
  cursor: pointer;
  position: relative;
  z-index: 10;
}

.bookmark-btn:hover {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.bookmark-btn.bookmarked {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.bookmark-btn.bookmarked:hover {
  background: linear-gradient(135deg, #059669 0%, #047857 100%);
}

.note-btn {
  background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
  color: white;
  font-weight: 500;
  transition: all 0.2s;
}

.note-btn:hover {
  background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.quick-note-box {
  background: #f9fafb;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  padding: 1rem;
  margin-top: 1rem;
  animation: slideDown 0.2s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.quick-note-box textarea {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font-family: inherit;
  font-size: 0.9rem;
  resize: vertical;
}

.quick-note-box textarea:focus {
  outline: none;
  border-color: #8b5cf6;
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

/* Accessibility Toolbar */
.accessibility-toolbar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  background: linear-gradient(135deg, #f0f9ff 0%, #e0e7ff 100%);
  border: 1px solid #bfdbfe;
  border-radius: 8px;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}

.font-controls, .font-family-controls, .theme-controls, .zoom-controls {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.font-family-btn, .theme-btn {
  background: white;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  padding: 0.35rem 0.7rem;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s;
}

.font-family-btn:hover, .theme-btn:hover {
  background: #f3f4f6;
  border-color: #9ca3af;
}

#zoomLevel {
  min-width: 50px;
  display: inline-block;
  text-align: center;
  font-size: 0.9rem;
  font-weight: 600;
  color: #374151;
}

.font-family-btn.active, .theme-btn.active {
  background: #1b7fff;
  color: white;
  border-color: #1b7fff;
}

/* Reader Themes */
.reader-page.theme-dark,
#pdfView.theme-dark,
#epubContainer.theme-dark {
  background: #1a1a1a !important;
  color: #e5e5e5 !important;
}

.reader-page.theme-dark canvas,
#pdfView.theme-dark canvas {
  filter: invert(0.9) hue-rotate(180deg);
  background: #1a1a1a !important;
}

.reader-page.theme-sepia,
#pdfView.theme-sepia,
#epubContainer.theme-sepia {
  background: #f4ecd8 !important;
  color: #5c4a34 !important;
}

.reader-page.theme-sepia canvas,
#pdfView.theme-sepia canvas {
  filter: sepia(0.4) brightness(1.1);
  background: #f4ecd8 !important;
}

.reader-page.theme-warm,
#pdfView.theme-warm,
#epubContainer.theme-warm {
  background: #2d1f14 !important;
  color: #f5ddb0 !important;
}

.reader-page.theme-warm canvas,
#pdfView.theme-warm canvas {
  filter: sepia(0.8) saturate(0.8) brightness(0.8);
  background: #2d1f14 !important;
}

.reader-page.theme-light,
#pdfView.theme-light,
#epubContainer.theme-light {
  background: white !important;
  color: #1e2233 !important;
}

/* Font Families */
.reader-page.font-serif,
#pdfView.font-serif,
#pdfView.font-serif *,
#epubContainer.font-serif,
#epubContainer.font-serif * {
  font-family: Georgia, 'Times New Roman', serif !important;
}

.reader-page.font-sans,
#pdfView.font-sans,
#pdfView.font-sans *,
#epubContainer.font-sans,
#epubContainer.font-sans * {
  font-family: system-ui, -apple-system, sans-serif !important;
}

.reader-page.font-dyslexic,
#pdfView.font-dyslexic,
#pdfView.font-dyslexic *,
#epubContainer.font-dyslexic,
#epubContainer.font-dyslexic * {
  font-family: 'OpenDyslexic', sans-serif !important;
}

/* === ACCESSIBILITY FEATURES === */

/* Dark Theme */
body.dark-theme {
  background: #0f0f0f !important;
  color: #e5e5e5 !important;
}

body.dark-theme .top-nav {
  background: #1a1a1a !important;
  border-bottom-color: #333 !important;
}

body.dark-theme .logo-text h1,
body.dark-theme .logo-text p {
  color: #e5e5e5 !important;
}

body.dark-theme .sidebar,
body.dark-theme .right-panel {
  background: #1a1a1a !important;
  color: #e5e5e5 !important;
}

body.dark-theme .content {
  background: #0f0f0f !important;
}

body.dark-theme .book-card {
  background: #1a1a1a !important;
  border-color: #333 !important;
  color: #e5e5e5 !important;
}

body.dark-theme .book-card:hover {
  border-color: #3b82f6 !important;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3) !important;
}

body.dark-theme .modal,
body.dark-theme .modal-backdrop {
  background: rgba(0, 0, 0, 0.9) !important;
}

body.dark-theme .modal > div {
  background: #1a1a1a !important;
  color: #e5e5e5 !important;
  border: 1px solid #333 !important;
}

body.dark-theme input,
body.dark-theme textarea,
body.dark-theme select {
  background: #0f0f0f !important;
  color: #e5e5e5 !important;
  border-color: #333 !important;
}

body.dark-theme input::placeholder,
body.dark-theme textarea::placeholder {
  color: #6b7280 !important;
}

body.dark-theme button,
body.dark-theme .nav-btn,
body.dark-theme .more-btn,
body.dark-theme .secondary-btn {
  background: #2d2d2d !important;
  color: #e5e5e5 !important;
  border-color: #404040 !important;
}

body.dark-theme button:hover {
  background: #404040 !important;
}

body.dark-theme .primary-btn {
  background: #3b82f6 !important;
  color: white !important;
}

body.dark-theme .primary-btn:hover {
  background: #2563eb !important;
}

body.dark-theme .muted,
body.dark-theme .small-text {
  color: #9ca3af !important;
}

body.dark-theme h1, body.dark-theme h2, body.dark-theme h3 {
  color: #e5e5e5 !important;
}

body.dark-theme .genre-item,
body.dark-theme .sidebar-tab,
body.dark-theme .panel-tab {
  background: #2d2d2d !important;
  color: #e5e5e5 !important;
}

body.dark-theme .genre-item.active,
body.dark-theme .sidebar-tab.active,
body.dark-theme .panel-tab.active {
  background: #3b82f6 !important;
  color: white !important;
}

body.dark-theme .setting-description {
  color: #9ca3af !important;
}

body.dark-theme .modal-header {
  border-bottom-color: #333 !important;
}

body.dark-theme .reader-sidebar {
  background: #1a1a1a !important;
  border-left-color: #333 !important;
}

body.dark-theme .accessibility-toolbar {
  background: #1a1a1a !important;
  border-color: #333 !important;
}

body.dark-theme .theme-toggle-btn {
  background: #2d2d2d !important;
  color: #e5e5e5 !important;
  border-color: #404040 !important;
}

body.dark-theme .theme-toggle-btn.active {
  background: #3b82f6 !important;
  color: white !important;
  border-color: #3b82f6 !important;
}

/* Color Blind Mode - Monochromatic Deep Blue Design */
body.color-blind {
  background: #0d1b2a !important;
  color: #e0e1dd !important;
}

body.color-blind * {
  border-color: #1b263b !important;
}

body.color-blind .top-nav {
  background: #1b263b !important;
  border-bottom-color: #415a77 !important;
}

body.color-blind .logo-text h1,
body.color-blind .logo-text p {
  color: #e0e1dd !important;
}

body.color-blind .sidebar,
body.color-blind .right-panel,
body.color-blind .content {
  background: #0d1b2a !important;
  color: #e0e1dd !important;
}

body.color-blind .book-card {
  background: #1b263b !important;
  border: 2px solid #415a77 !important;
  color: #e0e1dd !important;
}

body.color-blind .book-card:hover {
  border-color: #778da9 !important;
  box-shadow: 0 4px 12px rgba(119, 141, 169, 0.4) !important;
  background: #243447 !important;
}

body.color-blind .modal,
body.color-blind .modal > div {
  background: #1b263b !important;
  color: #e0e1dd !important;
  border-color: #415a77 !important;
}

body.color-blind input,
body.color-blind textarea,
body.color-blind select {
  background: #0d1b2a !important;
  color: #e0e1dd !important;
  border: 2px solid #415a77 !important;
}

body.color-blind input::placeholder,
body.color-blind textarea::placeholder {
  color: #778da9 !important;
}

body.color-blind button,
body.color-blind .nav-btn,
body.color-blind .more-btn,
body.color-blind .secondary-btn {
  background: #415a77 !important;
  color: #e0e1dd !important;
  border: 2px solid #778da9 !important;
  font-weight: 600 !important;
}

body.color-blind button:hover {
  background: #778da9 !important;
  color: white !important;
}

body.color-blind .primary-btn {
  background: #415a77 !important;
  color: white !important;
  border: 2px solid #778da9 !important;
  font-weight: bold !important;
}

body.color-blind .primary-btn:hover {
  background: #778da9 !important;
}

body.color-blind .muted,
body.color-blind .small-text {
  color: #778da9 !important;
  font-weight: 500 !important;
}

body.color-blind h1,
body.color-blind h2,
body.color-blind h3 {
  color: #e0e1dd !important;
  font-weight: bold !important;
}

body.color-blind .genre-item,
body.color-blind .sidebar-tab,
body.color-blind .panel-tab {
  background: #415a77 !important;
  color: #e0e1dd !important;
  border: 2px solid #778da9 !important;
}

body.color-blind .genre-item.active,
body.color-blind .sidebar-tab.active,
body.color-blind .panel-tab.active {
  background: #778da9 !important;
  color: white !important;
  font-weight: bold !important;
}

body.color-blind .star-btn {
  color: #778da9 !important;
  font-size: 1.5rem !important;
}

body.color-blind .star-btn.filled,
body.color-blind .star-btn:hover {
  color: #e0e1dd !important;
  font-weight: bold !important;
}

body.color-blind .progress-fill {
  background: #778da9 !important;
}

body.color-blind .progress-bar {
  background: #1b263b !important;
  border: 2px solid #415a77 !important;
}

body.color-blind .modal-header {
  border-bottom: 3px solid #415a77 !important;
}

body.color-blind .reader-sidebar {
  background: #1b263b !important;
  border-left: 3px solid #415a77 !important;
}

body.color-blind .accessibility-toolbar {
  background: #1b263b !important;
  border: 2px solid #415a77 !important;
}

body.color-blind .theme-toggle-btn {
  background: #415a77 !important;
  color: #e0e1dd !important;
  border: 2px solid #778da9 !important;
}

body.color-blind .theme-toggle-btn.active {
  background: #778da9 !important;
  color: white !important;
  font-weight: bold !important;
}

body.color-blind .setting-description {
  color: #778da9 !important;
  font-weight: 500 !important;
}



/* Annotation Toolbar */
.annotation-toolbar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem;
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.tool-btn {
  background: white;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.2s;
}

.tool-btn:hover {
  background: #f3f4f6;
  border-color: #9ca3af;
}

.highlight-group {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding-left: 0.5rem;
  border-left: 1px solid #d1d5db;
}

.tool-label {
  font-size: 0.85rem;
  color: #6b7280;
  margin-right: 0.2rem;
}

.highlight-btn {
  width: 28px;
  height: 28px;
  border: 2px solid #d1d5db;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0;
  padding: 0;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.highlight-btn.highlight-yellow {
  background: #FDD835;
}

.highlight-btn.highlight-blue {
  background: #42A5F5;
}

.highlight-btn.highlight-green {
  background: #66BB6A;
}

.highlight-btn.highlight-orange {
  background: #FF9800;
}

.highlight-btn.highlight-pink {
  background: #EC407A;
}

.highlight-btn:hover {
  border-color: #6b7280;
  transform: scale(1.1);
}

.highlight-btn.active {
  border-color: #000;
  border-width: 3px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.4);
  transform: scale(1.15);
}

#undoHighlightBtn,
#redoHighlightBtn {
  font-weight: bold;
  font-size: 1.2rem;
}

@keyframes pulse {
  0%, 100% {
    box-shadow: 0 0 10px rgba(27, 127, 255, 0.5);
  }
  50% {
    box-shadow: 0 0 20px rgba(27, 127, 255, 0.8);
  }
}

/* Reader sidebar */
.sidebar-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  border-bottom: 2px solid #e5e7eb;
}

.sidebar-tab {
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  padding: 0.5rem 1rem;
  cursor: pointer;
  font-weight: 500;
  color: #6b7280;
  transition: all 0.2s;
}

.sidebar-tab:hover {
  color: #1b7fff;
}

.sidebar-tab.active {
  color: #1b7fff;
  border-bottom-color: #1b7fff;
}

.sidebar-tab-content {
  display: block;
}

.sidebar-tab-content.hidden {
  display: none;
}

.reader-sidebar h3 {
  margin-top: 0.4rem;
  margin-bottom: 0.3rem;
}

.reader-sidebar textarea {
  width: 100%;
  min-height: 90px;
  border-radius: 8px;
  border: 1px solid #d1d5db;
  padding: 0.35rem 0.4rem;
  resize: vertical;
}

/* Genre Tags */
.genre-tag {
  display: inline-block;
  padding: 4px 10px;
  margin: 2px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border-radius: 12px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}

.genre-tag:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(102, 126, 234, 0.3);
  background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}

.genre-tag:active {
  transform: translateY(0);
}

.existing-review {
  border-radius: 8px;
  background: #f3f4ff;
  padding: 0.4rem 0.5rem;
  min-height: 40px;
}

/* Rating Distribution */
.rating-distribution {
  margin: 1rem 0;
}

.rating-bar-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.rating-label {
  font-size: 0.85rem;
  font-weight: 500;
  min-width: 35px;
}

.rating-bar-bg {
  flex: 1;
  height: 8px;
  background: #e5e7eb;
  border-radius: 4px;
  overflow: hidden;
}

.rating-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #FDD835, #FFA000);
  transition: width 0.3s ease;
}

.rating-count {
  font-size: 0.85rem;
  color: #6b7280;
  min-width: 30px;
  text-align: right;
}

/* Star Rating Input */
.star-rating-input {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 0.75rem;
  font-size: 1.8rem;
}

.star-btn {
  cursor: pointer;
  color: #d1d5db;
  transition: all 0.15s ease;
  -webkit-user-select: none;
  user-select: none;
  padding: 0.25rem;
}

.star-btn:hover,
.star-btn.active {
  color: #FDD835;
  transform: scale(1.15);
}

.star-btn:active {
  transform: scale(1.05);
}

.review-name-input {
  width: 100%;
  padding: 0.75rem;
  margin-bottom: 0.75rem;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.2s;
}

.review-name-input:focus {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* User Reviews List */
.user-reviews-list {
  max-height: 400px;
  overflow-y: auto;
}

.review-item {
  background: white;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 0.75rem;
  margin-bottom: 0.75rem;
}

.review-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.5rem;
  position: relative;
}

.review-user-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.review-username {
  font-weight: 600;
  color: #1e2233;
}

.review-rating {
  color: #FDD835;
  font-size: 0.95rem;
  line-height: 1;
}

.delete-review-btn {
  position: absolute;
  right: 0;
  top: 0;
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  color: #6b7280;
  transition: all 0.2s;
  border-radius: 4px;
  flex-shrink: 0;
}

.delete-review-btn:hover {
  background: #fee;
  color: #dc2626;
  transform: scale(1.1);
}

.delete-review-btn:active {
  transform: scale(0.95);
}

.review-rating {
  color: #FDD835;
  font-size: 0.9rem;
}

.review-text {
  color: #4b5563;
  line-height: 1.5;
  font-size: 0.9rem;
}

.review-date {
  font-size: 0.75rem;
  color: #9ca3af;
  margin-top: 0.5rem;
}

.annotations-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem 0;
  max-height: 200px;
  overflow-y: auto;
}

.annotations-list li {
  padding: 0.5rem;
  margin-bottom: 0.5rem;
  background: white;
  border: 1px solid #e5e7eb;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}

.annotations-list li:not(.muted):hover {
  background: #f9fafb;
  border-color: #1b7fff;
}

.annotations-list li.muted {
  cursor: default;
}

.annotation-page {
  font-size: 0.75rem;
  color: #6b7280;
  margin-top: 0.25rem;
}

.highlight-preview {
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  margin-top: 0.25rem;
  font-size: 0.85rem;
}

.highlight-yellow {
  background: #fef08a;
}

.highlight-blue {
  background: #bfdbfe;
}

.highlight-green {
  background: #bbf7d0;
}

.highlight-orange {
  background: #fed7aa;
}

.highlight-pink {
  background: #fbcfe8;
}

/* ===== TOAST ===== */
.toast {
  position: fixed;
  bottom: 16px;
  right: 16px;
  background: #111827;
  color: #f9fafb;
  padding: 0.6rem 0.9rem;
  border-radius: 999px;
  font-size: 0.85rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  z-index: 60;
}

.toast.hidden {
  display: none;
}

/* ===== AUTH MODAL ===== */
.auth-modal {
  width: min(400px, 90vw);
  max-height: auto;
}

.auth-content {
  padding: 1rem 0;
}

.auth-content form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.auth-content input {
  padding: 0.6rem 0.8rem;
  border-radius: 8px;
  border: 1px solid #d1d5db;
  font-size: 0.95rem;
}

.auth-content input:focus {
  outline: none;
  border-color: #1b7fff;
}

.auth-toggle {
  text-align: center;
  margin-top: 1rem;
  font-size: 0.9rem;
}

.auth-toggle button {
  background: none;
  border: none;
  color: #1b7fff;
  cursor: pointer;
  text-decoration: underline;
  font-size: 0.9rem;
}

/* Filters Modal */
.filters-modal {
  max-width: 600px;
  max-height: 80vh;
  overflow-y: auto;
}

/* Note Modal */
.note-modal {
  max-width: 500px;
}

.note-modal .modal-body {
  padding: 1rem;
}

.note-modal textarea {
  width: 100%;
  border-radius: 8px;
  border: 1px solid #d1d5db;
  padding: 0.75rem;
  font-family: inherit;
  font-size: 0.95rem;
  resize: vertical;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  padding: 1rem;
  border-top: 1px solid #e5e7eb;
}

.modal-footer button {
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
  border: 1px solid #d1d5db;
  background: white;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s;
}

.modal-footer button:hover {
  background: #f3f4f6;
}

.filters-content {
  padding: 1rem 0;
}

.filters-content section {
  margin-bottom: 1.5rem;
}

.filters-content h3 {
  margin: 0 0 0.75rem 0;
  font-size: 1rem;
  color: #374151;
}

/* Error Messages */
.error-message {
  background: #fee2e2;
  border: 2px solid #ef4444;
  border-radius: 8px;
  padding: 0.75rem;
  margin-bottom: 1rem;
  color: #dc2626;
  font-size: 0.9rem;
  font-weight: 500;
}

.error-message.hidden {
  display: none;
}

.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 0.5rem;
  max-height: 220px;
  overflow-y: auto;
  padding-right: 8px;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  background: #fafafa;
}

.filters-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid #e5e7eb;
}

.secondary-btn {
  padding: 0.5rem 1rem;
  border: 1px solid #d1d5db;
  background: #ffffff;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.95rem;
  flex: 1;
}

.secondary-btn:hover {
  background: #f9fafb;
}

.full-width {
  width: 100%;
  margin-top: 0.5rem;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 960px) {
  .layout {
    grid-template-columns: 220px 1fr;
  }

  .right-panel {
    display: none;
    position: fixed;
    top: 64px;
    right: 0;
    width: 260px;
    height: calc(100vh - 64px);
    z-index: 50;
    box-shadow: -4px 0 12px rgba(0, 0, 0, 0.1);
  }

  .right-panel.open {
    display: flex;
  }
}

/* Achievements */
.achievements-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.75rem;
}

.achievement-badge {
  background: white;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  padding: 0.75rem;
  text-align: center;
  transition: all 0.2s;
}

.achievement-badge.earned {
  border-color: #fbbf24;
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
}

.achievement-badge.locked {
  opacity: 0.5;
  filter: grayscale(1);
}

.achievement-icon {
  font-size: 2rem;
  margin-bottom: 0.25rem;
}

.achievement-name {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.15rem;
}

.achievement-desc {
  font-size: 0.7rem;
  color: #6b7280;
}

/* Streak Display */
.streak-display {
  text-align: center;
  padding: 1.5rem;
  background: linear-gradient(135deg, #fff7ed 0%, #fed7aa 100%);
  border-radius: 12px;
  border: 2px solid #fb923c;
}

.streak-number {
  font-size: 3rem;
  font-weight: bold;
  color: #ea580c;
  line-height: 1;
}

.streak-label {
  font-size: 0.9rem;
  color: #9a3412;
  margin-top: 0.25rem;
}

/* Daily Quote Modal */
.quote-modal {
  max-width: 500px;
}

.daily-quote {
  font-size: 1.25rem;
  font-style: italic;
  line-height: 1.6;
  color: #374151;
  margin: 1.5rem 0;
  text-align: center;
}

.quote-author {
  text-align: right;
  color: #6b7280;
  font-size: 0.95rem;
}

/* AI Recommendations Widget */
.ai-widget {
  position: fixed;
  bottom: 20px;
  left: 20px;
  width: 280px;
  min-width: 250px;
  max-width: 600px;
  height: 400px;
  min-height: 200px;
  max-height: 80vh;
  background: white;
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
  z-index: 45;
  overflow: auto;
  resize: both;
  display: flex;
  flex-direction: column;
}

/* Resize handle visual indicator */
.ai-widget::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 20px;
  height: 20px;
  background: linear-gradient(135deg, transparent 50%, #9ca3af 50%);
  cursor: nwse-resize;
  pointer-events: none;
}

.ai-widget.hidden {
  display: none;
}

.ai-widget.minimized .ai-widget-content {
  display: none !important;
}

.ai-widget.minimized .ai-widget-input-container {
  display: none !important;
}

.ai-widget.minimized {
  height: 50px !important;
  min-height: 50px !important;
  max-height: 50px !important;
  resize: none !important;
}

.ai-widget-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  cursor: move;
  -webkit-user-select: none;
  user-select: none;
  flex-shrink: 0;
}

.ai-widget-header > div {
  display: flex;
  gap: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
}

.ai-widget-toggle {
  background: none;
  border: none;
  color: white;
  font-size: 1.2rem;
  font-weight: bold;
  cursor: pointer;
  padding: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: background 0.2s;
}

.ai-widget-toggle:hover,
.ai-widget-close:hover {
  background: rgba(255, 255, 255, 0.2);
}

.ai-widget-close {
  background: none;
  border: none;
  color: white;
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  padding: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: background 0.2s;
}

.recommendations-header h3 {
  margin: 0;
  font-size: 1rem;
}

.recommendations-header button {
  background: none;
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
}

.ai-widget-content {
  padding: 12px;
  overflow-y: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.ai-widget-content .book-card {
  margin-bottom: 10px;
  padding: 10px;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
}

.ai-widget-content .book-card:hover {
  background: #f9fafb;
  border-color: #667eea;
  transform: translateY(-2px);
}

.ai-widget-content .book-title {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.ai-widget-content .book-author {
  font-size: 0.75rem;
  color: #6b7280;
}

.ai-quick-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 8px 0;
}

.ai-quick-btn {
  background: white;
  border: 1px solid #e5e7eb;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 0.85rem;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s;
  color: #1f2937;
}

.ai-quick-btn:hover {
  background: #f3f4f6;
  border-color: #9333ea;
  transform: translateY(-1px);
}

.ai-widget-welcome {
  color: #6b7280;
  font-size: 0.85rem;
  text-align: center;
  padding: 10px;
  margin-bottom: 8px;
}

#backToMenuBtn:hover {
  background: #9333ea !important;
  color: white !important;
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(147, 51, 234, 0.3);
}

/* AI Widget Input Area */
.ai-widget-input-container {
  display: flex;
  gap: 8px;
  padding: 12px;
  background: linear-gradient(135deg, #f9fafb 0%, #ffffff 100%);
  border-top: 1px solid #e5e7eb;
  border-radius: 0 0 12px 12px;
}

.ai-widget-chat-input {
  flex: 1;
  padding: 10px 14px;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  font-size: 0.9rem;
  font-family: inherit;
  transition: all 0.3s ease;
  background: white;
  outline: none;
}

.ai-widget-chat-input:focus {
  border-color: #9333ea;
  box-shadow: 0 0 0 3px rgba(147, 51, 234, 0.1);
  background: #ffffff;
}

.ai-widget-chat-input::placeholder {
  color: #9ca3af;
  font-style: italic;
}

.ai-widget-chat-send {
  padding: 10px 18px;
  background: linear-gradient(135deg, #9333ea 0%, #7c3aed 100%);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(147, 51, 234, 0.2);
  min-width: 70px;
}

.ai-widget-chat-send:hover {
  background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(147, 51, 234, 0.4);
}

.ai-widget-chat-send:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(147, 51, 234, 0.3);
}

.recommendation-section {
  margin-bottom: 1.5rem;
}

.recommendation-section h4 {
  font-size: 0.9rem;
  color: #6b7280;
  margin-bottom: 0.5rem;
}

.recommendation-item {
  padding: 0.75rem;
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  border-radius: 6px;
  margin-bottom: 0.5rem;
  cursor: pointer;
  transition: all 0.2s;
}

.recommendation-item:hover {
  background: #f3f4f6;
  border-color: #1b7fff;
}

.recommendation-title {
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.15rem;
}

.recommendation-meta {
  font-size: 0.75rem;
  color: #6b7280;
}

/* Confetti Canvas */
.confetti-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
}

/* ===== ABOUT MODAL ===== */
.about-modal {
  max-width: 700px;
  max-height: 85vh;
  overflow-y: auto;
}

.about-modal .modal-body {
  padding: 1.5rem;
}

.about-section {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid #e5e7eb;
}

.about-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.about-section h3 {
  color: #1b7fff;
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
}

.about-section h4 {
  color: #374151;
  font-size: 1rem;
  margin: 1rem 0 0.5rem 0;
}

.about-section p {
  line-height: 1.7;
  color: #4b5563;
  margin-bottom: 0.75rem;
}

.about-features-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
}

.about-features-list li {
  padding: 0.5rem 0;
  color: #374151;
  line-height: 1.6;
}

.copyright-text {
  font-weight: 600;
  color: #111827;
  margin-bottom: 1rem !important;
}

.request-input,
.request-textarea {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  font-size: 1rem;
  margin-bottom: 0.75rem;
  font-family: inherit;
  transition: border-color 0.2s;
}

.request-input:focus,
.request-textarea:focus {
  outline: none;
  border-color: #1b7fff;
}

.request-textarea {
  resize: vertical;
  min-height: 80px;
}

.about-footer {
  text-align: center;
  padding-top: 1rem;
}

.about-footer p {
  margin: 0.25rem 0;
}

#aboutBtn {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  padding: 0.75rem 1.25rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
  transition: transform 0.2s, box-shadow 0.2s;
  margin-left: 0.5rem;
}

#aboutBtn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

/* Dark theme adjustments for About modal */
body.dark-theme .about-modal {
  background: #1a1a1a !important;
}

body.dark-theme .about-section {
  border-bottom-color: #333 !important;
}

body.dark-theme .about-section h3 {
  color: #4da3ff !important;
}

body.dark-theme .about-section h4 {
  color: #e5e5e5 !important;
}

body.dark-theme .about-section p,
body.dark-theme .about-features-list li {
  color: #b0b0b0 !important;
}

body.dark-theme .copyright-text {
  color: #e5e5e5 !important;
}

body.dark-theme .request-input,
body.dark-theme .request-textarea {
  background: #2a2a2a !important;
  border-color: #444 !important;
  color: #e5e5e5 !important;
}

body.dark-theme .request-input:focus,
body.dark-theme .request-textarea:focus {
  border-color: #4da3ff !important;
}

/* Color blind mode adjustments for About modal */
body.color-blind .about-section h3 {
  color: #415a77 !important;
}

body.color-blind .about-modal {
  background: #e0e1dd !important;
}

body.color-blind .request-input,
body.color-blind .request-textarea {
  background: #fff !important;
  border-color: #415a77 !important;
  border-width: 2px !important;
}

body.color-blind .request-input:focus,
body.color-blind .request-textarea:focus {
  border-color: #1b263b !important;
  border-width: 3px !important;
}

@media (max-width: 720px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    display: none;
  }

  .reader-layout {
    grid-template-columns: 1fr;
  }

  .search-area {
    display: none;
  }
  
  .ai-widget {
    width: 90%;
    left: 5%;
    bottom: 10px;
  }
  
  .accessibility-toolbar {
    font-size: 0.85rem;
  }
  
  .font-family-btn, .theme-btn {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
  }
}

/* Optional overlay so content panels stay readable */
.layout,
.sidebar,
.content,
.right-panel,
.modal {
  position: relative;
  z-index: 1;
}

/* User Session Indicator */
.user-session-indicator {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: rgba(59, 130, 246, 0.9);
  color: white;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 0.75rem;
  font-weight: 500;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.session-label {
  opacity: 0.8;
  margin-right: 4px;
}

/* Accessibility Status Indicator */
.accessibility-status {
  position: fixed;
  bottom: 60px;
  right: 20px;
  background: rgba(16, 185, 129, 0.95);
  color: white;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 500;
  z-index: 1000;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
  min-width: 200px;
  max-width: 300px;
  transition: opacity 0.3s;
}

.accessibility-status.hidden {
  display: none;
}

.status-header {
  font-weight: 700;
  margin-bottom: 8px;
  font-size: 0.85rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  padding-bottom: 6px;
}

#activeFeaturesList {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.feature-badge {
  background: rgba(255, 255, 255, 0.2);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  display: inline-block;
}

body.high-contrast .accessibility-status {
  background: rgba(0, 0, 0, 0.9);
  border: 2px solid #fff;
}