/* LITREAD Reader Styles & 3D Realistic Page-Turn Animation */

.reader-container {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  background-color: var(--reader-bg, #1a1a1a);
  color: var(--reader-text, #f0f0f0);
  user-select: none;
  overflow: hidden;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  --reader-font-size: 18px;
  --reader-line-height: 1.6;
}

.reader-container.active {
  display: flex;
  flex-direction: column;
}

/* Reader Themes */
.reader-container[data-theme="paper"] {
  --reader-bg: #f7f5f0;
  --reader-page-bg: #fcfbf9;
  --reader-text: #2a2a2a;
  --reader-text-muted: #777777;
  --reader-border: #e6e3dc;
  --reader-hud-bg: rgba(247, 245, 240, 0.94);
  --reader-shadow: rgba(0, 0, 0, 0.12);
  --reader-spine-shadow: rgba(0, 0, 0, 0.08);
}

.reader-container[data-theme="sepia"] {
  --reader-bg: #f4ecd8;
  --reader-page-bg: #fbf7ee;
  --reader-text: #3c2f21;
  --reader-text-muted: #7c6853;
  --reader-border: #e0d5be;
  --reader-hud-bg: rgba(244, 236, 216, 0.94);
  --reader-shadow: rgba(60, 47, 33, 0.15);
  --reader-spine-shadow: rgba(60, 47, 33, 0.1);
}

.reader-container[data-theme="slate"] {
  --reader-bg: #22272e;
  --reader-page-bg: #2d333b;
  --reader-text: #adbac7;
  --reader-text-muted: #768390;
  --reader-border: #373e47;
  --reader-hud-bg: rgba(34, 39, 46, 0.94);
  --reader-shadow: rgba(0, 0, 0, 0.35);
  --reader-spine-shadow: rgba(0, 0, 0, 0.3);
}

.reader-container[data-theme="dark"] {
  --reader-bg: #121212;
  --reader-page-bg: #181818;
  --reader-text: #d6d6d6;
  --reader-text-muted: #707070;
  --reader-border: #282828;
  --reader-hud-bg: rgba(18, 18, 18, 0.94);
  --reader-shadow: rgba(0, 0, 0, 0.6);
  --reader-spine-shadow: rgba(0, 0, 0, 0.5);
}

/* Reader Typography Fonts */
.reader-container[data-font="serif"] .page-body {
  font-family: "Georgia", "Times New Roman", "Baskerville", serif;
}

.reader-container[data-font="sans"] .page-body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.reader-container[data-font="mono"] .page-body {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

.reader-container[data-font="dyslexic"] .page-body {
  font-family: "OpenDyslexic", "Comic Sans MS", cursive, sans-serif;
}

/* Heads-Up Display (HUD) */
.reader-hud {
  position: absolute;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 12px 24px;
  background-color: var(--reader-hud-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-color: var(--reader-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
}

.reader-top-hud {
  top: 0;
  border-bottom: 1px solid var(--reader-border);
}

.reader-top-hud.hidden {
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
}

.reader-bottom-hud {
  bottom: 0;
  border-top: 1px solid var(--reader-border);
  gap: 16px;
}

.reader-bottom-hud.hidden {
  transform: translateY(100%);
  opacity: 0;
  pointer-events: none;
}

.hud-left {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
}

.reader-meta {
  min-width: 0;
}

.reader-title {
  font-size: 0.95rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--reader-text);
}

.reader-subtitle {
  font-size: 0.78rem;
  color: var(--reader-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
}

.hud-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

#btn-reader-ai-toggle {
  display: none !important;
  position: relative;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

#btn-reader-ai-toggle.active {
  color: #c084fc;
}

#btn-reader-ai-toggle.active::after {
  content: '';
  position: absolute;
  top: 5px;
  right: 5px;
  width: 7px;
  height: 7px;
  background-color: #c084fc;
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(192, 132, 252, 0.8);
}

#btn-reader-ai-toggle.active:hover {
  color: #d8b4fe;
  background: rgba(192, 132, 252, 0.12);
}

[data-theme="light"] #btn-reader-ai-toggle.active {
  color: #7e22ce;
}

[data-theme="sepia"] #btn-reader-ai-toggle.active {
  color: #7e22ce;
}

.para-tap-word {
  cursor: pointer;
  border-radius: 3px;
  padding: 1px 2px;
  margin: 0 -1px;
  transition: background-color 0.15s ease, color 0.15s ease;
  user-select: text;
  -webkit-user-select: text;
}

.para-tap-word:hover {
  background: var(--reader-hover-bg, rgba(255, 255, 255, 0.08));
}

.para-tap-word.active-tap-word {
  background: rgba(192, 132, 252, 0.25);
  border-bottom: 2px solid #c084fc;
}

[data-theme="light"] .para-tap-word.active-tap-word {
  background: rgba(126, 34, 206, 0.15);
  border-bottom: 2px solid #7e22ce;
}

[data-theme="sepia"] .para-tap-word.active-tap-word {
  background: rgba(126, 34, 206, 0.15);
  border-bottom: 2px solid #7e22ce;
}

#btn-reader-read-aloud {
  position: relative;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

#btn-reader-read-aloud svg {
  width: 18px;
  height: 18px;
  color: currentColor;
  fill: none;
}

#btn-reader-read-aloud svg[fill="currentColor"] {
  fill: currentColor;
}

#btn-reader-read-aloud.active {
  color: #38bdf8;
  background: var(--reader-btn-active-bg, rgba(56, 189, 248, 0.12));
  border-color: rgba(56, 189, 248, 0.4);
  animation: read-aloud-pulse 2s infinite ease-in-out;
}

[data-theme="dark"] #btn-reader-read-aloud.active,
[data-theme="black"] #btn-reader-read-aloud.active {
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.16);
}

@keyframes read-aloud-pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.08);
    opacity: 0.85;
  }
}

.read-aloud-active-para {
  background-color: rgba(59, 130, 246, 0.12) !important;
  border-radius: 4px;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
  transition: background-color 0.25s ease, box-shadow 0.25s ease;
}

[data-theme="dark"] .read-aloud-active-para,
[data-theme="black"] .read-aloud-active-para {
  background-color: rgba(96, 165, 250, 0.18) !important;
  box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.18);
}

/* Scrubber / Slider in Bottom HUD */
.reader-scrubber {
  flex: 1;
  max-width: 560px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.page-slider {
  width: 100%;
  height: 4px;
  appearance: none;
  -webkit-appearance: none;
  background: var(--reader-border);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

.page-slider::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--reader-text);
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.page-slider::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--reader-text);
  cursor: pointer;
  border: none;
}

.page-indicator {
  font-size: 0.78rem;
  color: var(--reader-text-muted);
  font-family: var(--font-mono);
}

/* Reader Stage */
.reader-stage {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 56px 16px 64px 16px;
  perspective: 2500px;
  -webkit-perspective: 2500px;
  overflow: hidden;
  box-sizing: border-box;
  transition: padding 0.25s ease;
}

.reader-stage.hud-hidden {
  padding: 12px 16px;
}

/* Book Viewport Container */
.book-viewport {
  position: relative;
  width: calc(100vw - 24px);
  max-width: 98vw;
  height: calc(100% - 12px);
  max-height: calc(100vh - 24px);
  display: flex;
  align-items: stretch;
  justify-content: center;
  box-shadow: 0 16px 48px var(--reader-shadow);
  border-radius: 6px;
  background-color: var(--reader-page-bg);
  transform-style: preserve-3d;
  -webkit-transform-style: preserve-3d;
  transition: width 0.2s ease, height 0.2s ease;
}

.reader-stage.hud-hidden .book-viewport {
  height: calc(100% - 4px);
  max-height: calc(100vh - 12px);
  width: calc(100vw - 16px);
}

:fullscreen .book-viewport,
:-webkit-full-screen .book-viewport {
  width: calc(100vw - 8px);
  max-width: 100vw;
  height: calc(100vh - 8px);
  max-height: 100vh;
  border-radius: 0;
}

:fullscreen .reader-stage.hud-hidden,
:-webkit-full-screen .reader-stage.hud-hidden {
  padding: 4px 6px;
}

/* Spine Crease in Two-Page Mode */
.book-viewport.two-page .book-spine {
  display: block;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 30px;
  transform: translateX(-50%);
  z-index: 10;
  pointer-events: none;
  background: linear-gradient(
    to right,
    transparent 0%,
    var(--reader-spine-shadow) 42%,
    rgba(0, 0, 0, 0.2) 50%,
    var(--reader-spine-shadow) 58%,
    transparent 100%
  );
}

.book-spine {
  display: none;
}

/* Pages */
.page-container {
  height: 100%;
  background-color: var(--reader-page-bg);
  overflow: hidden;
  position: relative;
  border-radius: 4px;
  min-width: 0;
  box-sizing: border-box;
}

.book-viewport:not(.two-page) .page-left {
  width: 100%;
  max-width: 100%;
  flex: 1 1 100%;
  display: flex;
  flex-direction: column;
}

.book-viewport:not(.two-page) .page-right {
  display: none !important;
}

.book-viewport.two-page .page-left,
.book-viewport.two-page .page-right {
  width: 50% !important;
  max-width: 50% !important;
  flex: 1 1 50% !important;
  min-width: 0 !important;
  display: flex !important;
  flex-direction: column;
  box-sizing: border-box;
}

.book-viewport.two-page .page-right {
  border-left: 1px solid var(--reader-border);
}

.page-blank {
  width: 100%;
  height: 100%;
  background-color: var(--reader-page-bg);
}

/* Page Inner Content Wrapper */
.page-content-wrapper {
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: 20px clamp(16px, 3.5vw, 45px) 14px clamp(16px, 3.5vw, 45px);
  user-select: text;
  -webkit-user-select: text;
  box-sizing: border-box;
  overflow: hidden;
}

.page-header-info {
  font-size: 0.75rem;
  color: var(--reader-text-muted);
  text-align: center;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex-shrink: 0;
}

.page-body {
  flex: 1;
  overflow: hidden;
  font-size: var(--reader-font-size);
  line-height: var(--reader-line-height);
  color: var(--reader-text);
  display: flex;
  flex-direction: column;
  position: relative;
}

.page-footer-info {
  font-size: 0.75rem;
  color: var(--reader-text-muted);
  text-align: center;
  font-family: var(--font-mono);
  margin-top: auto;
  padding-top: 8px;
  border-top: 1px solid var(--reader-border);
  flex-shrink: 0;
  width: 100%;
  box-sizing: border-box;
  letter-spacing: 0.02em;
}

/* EPUB Multi-Column Paginated Layout */
.epub-page-frame {
  width: 100%;
  height: 100%;
  overflow: hidden;
  position: relative;
  user-select: text;
  -webkit-user-select: text;
}

.epub-column-wrapper {
  height: 100%;
  box-sizing: border-box;
  will-change: transform;
  user-select: text;
  -webkit-user-select: text;
}

.reader-measure-stage {
  position: absolute;
  visibility: hidden;
  pointer-events: none;
  top: -9999px;
  left: -9999px;
  z-index: -100;
  overflow: hidden;
  font-size: var(--reader-font-size);
  line-height: var(--reader-line-height);
  color: var(--reader-text);
}

/* EPUB Chapter Content Styling */
.epub-content {
  box-sizing: border-box;
  padding: 0 4px;
  color: var(--reader-text);
  font-size: var(--reader-font-size);
  line-height: var(--reader-line-height);
  word-break: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
  -webkit-hyphens: auto;
}

/* Ensure container elements from EPUB do not clip multi-column content */
.epub-content div,
.epub-content section,
.epub-content article {
  height: auto !important;
  max-height: none !important;
  overflow: visible !important;
}

.epub-content p {
  margin-bottom: 0.9em;
  text-indent: 1.5em;
  text-align: justify;
  orphans: 1;
  widows: 1;
  break-inside: auto;
  page-break-inside: auto;
}

.epub-content h1,
.epub-content h2,
.epub-content h3 {
  text-align: center;
  margin: 0.8em 0 0.5em 0;
  line-height: 1.25;
  break-after: avoid;
  page-break-after: avoid;
}

.epub-content img,
.epub-content svg,
.epub-content image {
  max-width: 100% !important;
  max-height: 100% !important;
  height: auto !important;
  display: block;
  margin: 12px auto;
  border-radius: 4px;
  object-fit: contain;
  break-inside: avoid;
  page-break-inside: avoid;
}

/* PDF Canvas */
.pdf-canvas {
  display: block;
  margin: auto;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

/* ========================================================
   3D REALISTIC PAGE TURNING ANIMATION
   ======================================================== */
.flipping-leaf {
  position: absolute;
  top: 0;
  bottom: 0;
  z-index: 50;
  background-color: var(--reader-page-bg);
  transform-style: preserve-3d;
  -webkit-transform-style: preserve-3d;
  pointer-events: none;
  box-shadow: 0 12px 36px var(--reader-shadow);
}

/* Forward Page Flip (from right to left) */
.flipping-leaf.flip-next {
  right: 0;
  width: 50%;
  transform-origin: left center;
  transform: rotateY(0deg);
  transition: transform 0.52s cubic-bezier(0.4, 0, 0.2, 1);
}

.book-viewport:not(.two-page) .flipping-leaf.flip-next {
  width: 100%;
}

.flipping-leaf.flip-next.turning {
  transform: rotateY(-180deg);
}

/* Backward Page Flip (from left to right) */
.flipping-leaf.flip-prev {
  left: 0;
  width: 50%;
  transform-origin: right center;
  transform: rotateY(-180deg);
  transition: transform 0.52s cubic-bezier(0.4, 0, 0.2, 1);
}

.book-viewport:not(.two-page) .flipping-leaf.flip-prev {
  width: 100%;
}

.flipping-leaf.flip-prev.turning {
  transform: rotateY(0deg);
}

/* Leaf Faces */
.leaf-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  background-color: var(--reader-page-bg);
  overflow: hidden;
}

.leaf-front {
  z-index: 2;
}

.leaf-back {
  transform: rotateY(180deg);
  z-index: 1;
}

/* Dynamic Shadow Overlay during 3D flip */
.flipping-leaf::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(to right, rgba(0,0,0,0.2) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.52s ease;
}

.flipping-leaf.turning::after {
  opacity: 1;
}

/* Continuous Scroll Mode */
.scroll-viewport {
  width: min(98vw, 1500px);
  height: 100%;
  overflow-y: auto;
  background-color: var(--reader-page-bg);
  border-radius: 6px;
  padding: 30px clamp(20px, 4vw, 50px);
  box-shadow: 0 8px 32px var(--reader-shadow);
  scrollbar-width: thin;
  transition: width 0.2s ease;
}

:fullscreen .scroll-viewport,
:-webkit-full-screen .scroll-viewport {
  width: min(99vw, 2000px);
  padding: 40px clamp(32px, 6vw, 80px);
}

.scroll-chapter-item {
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px dashed var(--reader-border);
}

.scroll-chapter-item:last-child {
  border-bottom: none;
  margin-bottom: 20px;
}

.scroll-chapter-title {
  font-size: 1.25rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 24px;
  color: var(--reader-text);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--reader-border);
}

.scroll-content {
  height: auto !important;
  overflow: visible !important;
}

.scroll-page-item {
  margin-bottom: 40px;
  padding-bottom: 30px;
  border-bottom: 1px dashed var(--reader-border);
}

/* Drawers & Modals */
.reader-drawer {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: min(85vw, 360px);
  z-index: 150;
  background-color: var(--reader-hud-bg);
  border-right: 1px solid var(--reader-border);
  box-shadow: 4px 0 24px var(--reader-shadow);
  display: flex;
  flex-direction: column;
  transform: translateX(-100%);
  transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

.reader-drawer.active {
  transform: translateX(0);
}

.drawer-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--reader-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.drawer-header h3 {
  font-size: 1rem;
  font-weight: 600;
}

.toc-list {
  flex: 1;
  overflow-y: auto;
  list-style: none;
  padding: 10px 0;
}

.toc-item {
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.88rem;
  color: var(--reader-text);
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.toc-item:hover {
  background-color: rgba(255, 255, 255, 0.05);
}

.toc-item.active {
  font-weight: 600;
  border-left: 3px solid var(--reader-text);
}

.toc-title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.toc-page {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--reader-text-muted);
}

/* Appearance Settings Modal */
.reader-modal {
  position: absolute;
  top: 60px;
  right: 24px;
  width: min(90vw, 320px);
  z-index: 150;
  background-color: var(--reader-hud-bg);
  border: 1px solid var(--reader-border);
  border-radius: var(--radius-md);
  box-shadow: 0 12px 32px var(--reader-shadow);
  padding: 18px 20px;
  display: none;
}

.reader-modal.active {
  display: block;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.modal-header h3 {
  font-size: 0.95rem;
  font-weight: 600;
}

.setting-group {
  margin-bottom: 16px;
}

.setting-label {
  display: block;
  font-size: 0.78rem;
  color: var(--reader-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.setting-buttons {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(65px, 1fr));
  gap: 6px;
}

.setting-theme-btn,
.setting-font-btn,
.setting-anim-btn,
.setting-spread-btn,
.setting-awake-btn,
.setting-trans-btn,
.setting-book-ai-btn,
.setting-display-btn,
.setting-hover-btn,
.drawer-trans-btn {
  padding: 7px 0;
  font-size: 0.78rem;
  background: transparent;
  border: 1px solid var(--reader-border);
  border-radius: var(--radius-sm);
  color: var(--reader-text);
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: center;
}

.setting-theme-btn:hover,
.setting-font-btn:hover,
.setting-anim-btn:hover,
.setting-spread-btn:hover,
.setting-awake-btn:hover,
.setting-trans-btn:hover,
.setting-book-ai-btn:hover,
.setting-display-btn:hover,
.setting-hover-btn:hover,
.drawer-trans-btn:hover {
  border-color: var(--reader-text);
}

.setting-theme-btn.active,
.setting-font-btn.active,
.setting-anim-btn.active,
.setting-spread-btn.active,
.setting-awake-btn.active,
.setting-trans-btn.active,
.setting-book-ai-btn.active,
.setting-display-btn.active,
.setting-hover-btn.active,
.drawer-trans-btn.active {
  background-color: var(--reader-text);
  color: var(--reader-bg);
  border-color: var(--reader-text);
}

.setting-stepper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--reader-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.btn-stepper {
  width: 44px;
  height: 34px;
  background: transparent;
  border: none;
  font-size: 1.1rem;
  color: var(--reader-text);
  cursor: pointer;
}

.btn-stepper:hover {
  background-color: rgba(255, 255, 255, 0.05);
}

.stepper-value {
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

/* Reader Loader */
.reader-loader {
  display: none;
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 80;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 14px;
}

.reader-loader.active {
  display: flex;
}

.loader-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid rgba(255, 255, 255, 0.2);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loader-text {
  font-size: 0.88rem;
  color: #ffffff;
  letter-spacing: 0.05em;
}

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

@media (max-width: 900px) {
  .page-content-wrapper {
    padding: 16px clamp(12px, 2.5vw, 24px) 14px clamp(12px, 2.5vw, 24px);
  }
  .book-viewport {
    width: 98vw;
    height: calc(100vh - 48px);
    max-height: calc(100vh - 48px);
  }
  .book-viewport.two-page {
    width: 99vw;
    max-width: 100vw;
  }
}

@media (max-width: 600px) {
  .page-content-wrapper {
    padding: 12px 12px 10px 12px;
  }
  .page-header-info {
    font-size: 0.68rem;
    margin-bottom: 6px;
  }
  .page-footer-info {
    font-size: 0.70rem;
    margin-top: auto;
    padding-top: 6px;
  }
}

/* AI Analysis Modal Typography Fonts */
.reader-ai-popup[data-font="serif"] .ai-popup-card {
  font-family: "Georgia", "Times New Roman", "Baskerville", serif;
}
.reader-ai-popup[data-font="sans"] .ai-popup-card {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
.reader-ai-popup[data-font="mono"] .ai-popup-card {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
.reader-ai-popup[data-font="dyslexic"] .ai-popup-card {
  font-family: "OpenDyslexic", "Comic Sans MS", cursive, sans-serif;
}

/* AI Analysis Popup (Disabled for now) */
.reader-ai-popup {
  display: none !important;
  position: fixed;
  inset: 0;
  z-index: 3000;
  align-items: center;
  justify-content: center;
  padding: 0;
  box-sizing: border-box;
  animation: aiFadeIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

.ai-popup-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.ai-popup-card {
  position: relative;
  z-index: 2;
  width: calc(100vw - clamp(12px, 3vw, 32px));
  height: calc(100vh - clamp(12px, 3vh, 32px));
  max-width: none;
  max-height: calc(100vh - clamp(12px, 3vh, 32px));
  display: flex;
  flex-direction: column;
  background-color: var(--reader-hud-bg, rgba(24, 24, 27, 0.98));
  color: var(--reader-text, #f4f4f5);
  border: 1px solid var(--reader-border, rgba(255, 255, 255, 0.12));
  border-radius: 14px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  overflow: hidden;
  box-sizing: border-box;
  animation: aiCardSlide 0.26s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes aiFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes aiCardSlide {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.ai-popup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--reader-border, rgba(255, 255, 255, 0.1));
  flex-shrink: 0;
}

.ai-popup-title-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.ai-popup-sparkle {
  color: #a855f7;
  font-size: 1.15rem;
}

.ai-popup-title {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--reader-text, #f4f4f5);
}

.ai-popup-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-ai-action {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--reader-border, rgba(255, 255, 255, 0.08));
  color: var(--reader-text-muted, #a1a1aa);
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-ai-action:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--reader-text, #f4f4f5);
  border-color: rgba(255, 255, 255, 0.2);
}

.ai-popup-target {
  padding: clamp(14px, 2vh, 20px) clamp(16px, 3.5vw, 36px) 10px;
  flex-shrink: 0;
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  box-sizing: border-box;
}

.ai-target-word {
  display: inline-block;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--reader-text, #fff);
  word-break: break-word;
  padding: 8px 16px;
  background: rgba(168, 85, 247, 0.14);
  border-radius: 8px;
  border-left: 4px solid #a855f7;
  max-height: 6em;
  overflow-y: auto;
  box-shadow: 0 2px 10px rgba(168, 85, 247, 0.1);
}

.ai-popup-body {
  flex: 1;
  padding: 14px clamp(16px, 3.5vw, 36px) clamp(20px, 3vh, 36px);
  font-size: 1.15rem;
  line-height: 1.8;
  overflow-y: auto;
  word-break: break-word;
  user-select: text;
  -webkit-user-select: text;
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  box-sizing: border-box;
  -webkit-overflow-scrolling: touch;
}

.ai-popup-body p {
  margin: 0 0 16px 0;
}

.ai-popup-body p:last-child {
  margin-bottom: 0;
}

.ai-popup-body ul {
  margin: 12px 0 22px 26px;
  padding: 0;
}

.ai-popup-body li {
  margin-bottom: 12px;
  line-height: 1.75;
}

.ai-popup-body strong {
  color: var(--reader-text, #fff);
  font-weight: 600;
}

.ai-popup-body h3,
.ai-popup-body .ai-analysis-h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 22px 0 12px 0;
  color: #c084fc;
  letter-spacing: 0.01em;
}

.ai-popup-body code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.9em;
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 6px;
  border-radius: 4px;
}

.ai-loading-state {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  color: var(--reader-text-muted, #a1a1aa);
  font-size: 1.1rem;
  padding: 80px 20px;
}

.ai-loading-spinner {
  width: 28px;
  height: 28px;
  border: 3px solid rgba(168, 85, 247, 0.25);
  border-top-color: #a855f7;
  border-radius: 50%;
  animation: aiSpin 0.7s linear infinite;
  flex-shrink: 0;
}

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

.ai-popup-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  border-top: 1px solid var(--reader-border, rgba(255, 255, 255, 0.08));
  font-size: 0.8rem;
  color: var(--reader-text-muted, #a1a1aa);
  letter-spacing: 0.03em;
  flex-shrink: 0;
}

.ai-popup-copy-notice {
  color: #10b981;
  font-size: 0.8rem;
  font-weight: 500;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.ai-popup-copy-notice.visible {
  opacity: 1;
}

.ai-no-model-box {
  padding: 20px;
  border-radius: 10px;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.25);
  color: var(--reader-text, #f0f0f0);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Embedded Interlinear Translation */
.litread-interlinear-block {
  margin-bottom: 0.85em;
}

.litread-interlinear-item {
  display: block;
  margin-bottom: 0.5em;
}

.litread-interlinear-item:last-child {
  margin-bottom: 0;
}

.litread-orig-text {
  display: block;
  line-height: 1.5;
  color: inherit;
}

.litread-trans-subline {
  display: block;
  font-size: 0.82em;
  line-height: 1.35;
  color: #38bdf8;
  opacity: 0.9;
  font-style: italic;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  margin-top: 3px;
  margin-bottom: 6px;
  padding-left: 6px;
  border-left: 2px solid rgba(56, 189, 248, 0.4);
  letter-spacing: 0.01em;
  user-select: text;
}

/* Light Theme Overrides */
[data-theme="light"] .litread-trans-subline,
.theme-light .litread-trans-subline {
  color: #0284c7;
  border-left-color: rgba(2, 132, 199, 0.45);
  opacity: 0.95;
}

/* Sepia Theme Overrides */
[data-theme="sepia"] .litread-trans-subline,
.theme-sepia .litread-trans-subline {
  color: #92400e;
  border-left-color: rgba(146, 64, 14, 0.45);
  opacity: 0.95;
}

/* Word Hover Translation Popup - disabled in favor of embedded interlinear */
.reader-hover-popup {
  display: none !important;
}

.reader-hover-popup .hover-word {
  font-weight: 600;
  color: var(--reader-text, #ffffff);
  opacity: 0.9;
}

.reader-hover-popup .hover-arrow {
  opacity: 0.45;
  font-size: 0.78rem;
}

.reader-hover-popup .hover-trans {
  color: #38bdf8;
  font-weight: 500;
}

.reader-hover-popup .hover-loading-dots {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 0 4px;
}

.reader-hover-popup .hover-loading-dots i {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: #38bdf8;
  display: inline-block;
  animation: hoverDotPulse 0.9s infinite ease-in-out alternate;
}

.reader-hover-popup .hover-loading-dots i:nth-child(2) {
  animation-delay: 0.2s;
}

.reader-hover-popup .hover-loading-dots i:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes hoverDotPulse {
  0% { transform: scale(0.6); opacity: 0.35; }
  100% { transform: scale(1.15); opacity: 1; }
}

/* Light / Sepia theme adjustments for hover popup */
[data-theme="light"] .reader-hover-popup,
.theme-light .reader-hover-popup {
  background-color: rgba(255, 255, 255, 0.95);
  color: #1a1a1a;
  border-color: rgba(0, 0, 0, 0.12);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .reader-hover-popup .hover-trans,
.theme-light .reader-hover-popup .hover-trans {
  color: #0284c7;
}

[data-theme="sepia"] .reader-hover-popup,
.theme-sepia .reader-hover-popup {
  background-color: rgba(248, 241, 227, 0.96);
  color: #2c251d;
  border-color: rgba(92, 64, 51, 0.2);
  box-shadow: 0 4px 14px rgba(92, 64, 51, 0.15);
}

[data-theme="sepia"] .reader-hover-popup .hover-trans,
.theme-sepia .reader-hover-popup .hover-trans {
  color: #b45309;
}

.btn-icon.has-translation,
.btn-icon.trans-active {
  color: #38bdf8;
  position: relative;
}

.btn-icon.has-translation::after,
.btn-icon.trans-active::after {
  content: '';
  position: absolute;
  top: 5px;
  right: 5px;
  width: 7px;
  height: 7px;
  background-color: #38bdf8;
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(56, 189, 248, 0.8);
}

/* =====================================================================
   READER BOTTOM TRANSLATION DOCK
   ===================================================================== */
.reader-translation-dock {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(0);
  width: min(760px, calc(100vw - 32px));
  max-height: 260px;
  z-index: 9500;
  display: flex;
  flex-direction: column;
  background: var(--reader-hud-bg, rgba(22, 22, 26, 0.94));
  color: var(--reader-text, #f0f0f2);
  border: 1px solid var(--reader-border, rgba(255, 255, 255, 0.16));
  border-radius: 14px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 12px 16px;
  box-sizing: border-box;
  animation: dockSlideUp 0.22s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  pointer-events: auto;
}

@keyframes dockSlideUp {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.trans-dock-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--reader-border, rgba(255, 255, 255, 0.08));
  user-select: none;
}

.trans-dock-tag {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
}

.trans-dock-sparkle {
  color: #38bdf8;
  font-size: 0.85rem;
}

.trans-dock-lang {
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #38bdf8;
}

.trans-dock-status {
  font-size: 0.75rem;
  opacity: 0.65;
  font-style: italic;
}

.trans-dock-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.btn-trans-mini {
  width: 26px;
  height: 26px;
  padding: 4px;
  border-radius: 6px;
  background: transparent;
  border: none;
  color: var(--reader-text, #ececec);
  opacity: 0.7;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.15s, background-color 0.15s;
}

.btn-trans-mini:hover {
  opacity: 1;
  background-color: rgba(255, 255, 255, 0.1);
}

.trans-dock-body {
  overflow-y: auto;
  max-height: 180px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.trans-dock-original {
  font-size: 0.85rem;
  line-height: 1.4;
  opacity: 0.6;
  font-style: italic;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.trans-dock-result {
  font-size: 1.02rem;
  line-height: 1.5;
  font-weight: 500;
  color: var(--reader-text, #ffffff);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.trans-dock-spinner {
  display: none;
  width: 14px;
  height: 14px;
  margin-top: 3px;
  border: 2px solid rgba(56, 189, 248, 0.3);
  border-top-color: #38bdf8;
  border-radius: 50%;
  animation: transSpin 0.7s linear infinite;
  flex-shrink: 0;
}

.trans-dock-result.is-loading .trans-dock-spinner {
  display: inline-block;
}

.trans-dock-result.is-loading .trans-dock-text {
  opacity: 0.7;
  font-style: italic;
}

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

/* Floating Card Mode for Translation Dock */
.reader-translation-dock.dock-mode-popup {
  bottom: auto;
  top: 70px;
  right: 24px;
  left: auto;
  transform: none;
  width: min(440px, calc(100vw - 32px));
  animation: popupSlideDown 0.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

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

/* Theme Adaptations for Translation Dock */
[data-theme="light"] .reader-translation-dock,
.theme-light .reader-translation-dock {
  background: rgba(255, 255, 255, 0.96);
  color: #1a1a1a;
  border-color: rgba(0, 0, 0, 0.12);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.18);
}
[data-theme="light"] .reader-translation-dock .trans-dock-lang,
.theme-light .reader-translation-dock .trans-dock-lang {
  color: #0284c7;
}
[data-theme="light"] .btn-trans-mini:hover,
.theme-light .btn-trans-mini:hover {
  background-color: rgba(0, 0, 0, 0.06);
}

[data-theme="sepia"] .reader-translation-dock,
.theme-sepia .reader-translation-dock {
  background: rgba(247, 240, 226, 0.96);
  color: #2e261f;
  border-color: rgba(92, 64, 51, 0.18);
  box-shadow: 0 12px 36px rgba(92, 64, 51, 0.18);
}
[data-theme="sepia"] .reader-translation-dock .trans-dock-lang,
.theme-sepia .reader-translation-dock .trans-dock-lang {
  color: #b45309;
}
[data-theme="sepia"] .btn-trans-mini:hover,
.theme-sepia .btn-trans-mini:hover {
  background-color: rgba(92, 64, 51, 0.08);
}

/* =====================================================================
   READER TRANSLATION SETTINGS DIALOG
   ===================================================================== */
.reader-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  animation: fadeIn 0.15s ease forwards;
}

.reader-translate-card {
  width: 100%;
  max-width: 440px;
  background: var(--reader-bg, #1a1a1e);
  color: var(--reader-text, #f0f0f2);
  border: 1px solid var(--reader-border, rgba(255, 255, 255, 0.14));
  border-radius: 14px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  animation: scaleIn 0.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

.translate-dialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--reader-border, rgba(255, 255, 255, 0.1));
}

.translate-header-title {
  display: flex;
  align-items: center;
  gap: 8px;
}

.translate-header-title h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
}

.translate-dialog-content {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Sleek Segmented Switch Controls */
.reader-translate-card .setting-buttons,
.reader-settings-group-trans .setting-buttons,
.setting-buttons.segmented-control {
  display: flex;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--reader-border, rgba(255, 255, 255, 0.12));
  border-radius: 9px;
  padding: 3px;
  gap: 4px;
}

.setting-trans-btn,
.setting-book-ai-btn,
.setting-display-btn,
.setting-hover-btn,
.drawer-trans-btn {
  flex: 1;
  min-height: 36px;
  padding: 7px 14px;
  font-size: 0.82rem;
  font-weight: 500;
  font-family: inherit;
  border: 1px solid transparent;
  background: transparent;
  color: var(--reader-text-muted, rgba(255, 255, 255, 0.65));
  border-radius: 7px;
  cursor: pointer;
  transition: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-align: center;
  outline: none;
  user-select: none;
}

.setting-trans-btn:hover,
.setting-book-ai-btn:hover,
.setting-display-btn:hover,
.setting-hover-btn:hover,
.drawer-trans-btn:hover {
  color: var(--reader-text, #ffffff);
  background: rgba(255, 255, 255, 0.05);
}

.setting-trans-btn.active,
.setting-book-ai-btn.active,
.setting-display-btn.active,
.setting-hover-btn.active,
.drawer-trans-btn.active {
  background: var(--reader-text, #ffffff);
  color: var(--reader-bg, #141416);
  font-weight: 600;
  border-color: transparent;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.28);
}

.status-indicator-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: #22c55e;
  display: inline-block;
  box-shadow: 0 0 6px rgba(34, 197, 94, 0.6);
  flex-shrink: 0;
}

.setting-trans-btn:not(.active) .status-indicator-dot,
.setting-book-ai-btn:not(.active) .status-indicator-dot,
.setting-hover-btn:not(.active) .status-indicator-dot {
  opacity: 0.4;
  box-shadow: none;
}

.setting-hint {
  font-size: 0.77rem;
  opacity: 0.65;
  margin: 6px 0 0 2px;
  line-height: 1.4;
}

.trans-select {
  width: 100%;
  padding: 9px 36px 9px 12px;
  border-radius: 8px;
  background-color: rgba(255, 255, 255, 0.06);
  color: var(--reader-text, inherit);
  border: 1px solid var(--reader-border, rgba(255, 255, 255, 0.16));
  font-size: 0.88rem;
  font-weight: 500;
  font-family: inherit;
  outline: none;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='rgba(255,255,255,0.6)' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.trans-select:focus {
  border-color: #38bdf8;
  box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
}

.trans-select option {
  background: #202024;
  color: #f0f0f2;
}

.translate-status-box {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--reader-border, rgba(255, 255, 255, 0.08));
  border-radius: 8px;
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.8rem;
}

.trans-status-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.trans-status-row .status-label {
  opacity: 0.65;
}

.trans-status-row .status-val {
  font-weight: 500;
  color: #38bdf8;
}

/* Light Theme */
[data-theme="light"] .reader-translate-card {
  background: #ffffff;
  color: #18181b;
  border-color: rgba(0, 0, 0, 0.12);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .reader-translate-card .setting-buttons,
[data-theme="light"] .reader-settings-group-trans .setting-buttons,
[data-theme="light"] .setting-buttons.segmented-control {
  background: rgba(0, 0, 0, 0.05);
  border-color: rgba(0, 0, 0, 0.09);
}

[data-theme="light"] .setting-trans-btn,
[data-theme="light"] .setting-book-ai-btn,
[data-theme="light"] .setting-display-btn,
[data-theme="light"] .setting-hover-btn,
[data-theme="light"] .drawer-trans-btn {
  color: rgba(0, 0, 0, 0.65);
}

[data-theme="light"] .setting-trans-btn:hover,
[data-theme="light"] .setting-book-ai-btn:hover,
[data-theme="light"] .setting-display-btn:hover,
[data-theme="light"] .setting-hover-btn:hover,
[data-theme="light"] .drawer-trans-btn:hover {
  color: #18181b;
  background: rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .setting-trans-btn.active,
[data-theme="light"] .setting-book-ai-btn.active,
[data-theme="light"] .setting-display-btn.active,
[data-theme="light"] .setting-hover-btn.active,
[data-theme="light"] .drawer-trans-btn.active {
  background: #18181b;
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.16);
}

[data-theme="light"] .trans-select {
  background-color: rgba(0, 0, 0, 0.04);
  color: #18181b;
  border-color: rgba(0, 0, 0, 0.14);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='rgba(0,0,0,0.6)' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
}

[data-theme="light"] .trans-select option {
  background: #ffffff;
  color: #18181b;
}

[data-theme="light"] .translate-status-box {
  background: rgba(0, 0, 0, 0.03);
  border-color: rgba(0, 0, 0, 0.07);
}

/* Sepia Theme */
[data-theme="sepia"] .reader-translate-card {
  background: #fbf7ee;
  color: #2d241e;
  border-color: rgba(92, 64, 51, 0.18);
  box-shadow: 0 16px 48px rgba(92, 64, 51, 0.15);
}

[data-theme="sepia"] .reader-translate-card .setting-buttons,
[data-theme="sepia"] .reader-settings-group-trans .setting-buttons,
[data-theme="sepia"] .setting-buttons.segmented-control {
  background: rgba(92, 64, 51, 0.07);
  border-color: rgba(92, 64, 51, 0.14);
}

[data-theme="sepia"] .setting-trans-btn,
[data-theme="sepia"] .setting-book-ai-btn,
[data-theme="sepia"] .setting-display-btn,
[data-theme="sepia"] .setting-hover-btn,
[data-theme="sepia"] .drawer-trans-btn {
  color: rgba(45, 36, 30, 0.65);
}

[data-theme="sepia"] .setting-trans-btn:hover,
[data-theme="sepia"] .setting-book-ai-btn:hover,
[data-theme="sepia"] .setting-display-btn:hover,
[data-theme="sepia"] .setting-hover-btn:hover,
[data-theme="sepia"] .drawer-trans-btn:hover {
  color: #2d241e;
  background: rgba(92, 64, 51, 0.05);
}

[data-theme="sepia"] .setting-trans-btn.active,
[data-theme="sepia"] .setting-book-ai-btn.active,
[data-theme="sepia"] .setting-display-btn.active,
[data-theme="sepia"] .setting-hover-btn.active,
[data-theme="sepia"] .drawer-trans-btn.active {
  background: #2d241e;
  color: #fbf7ee;
  box-shadow: 0 2px 6px rgba(92, 64, 51, 0.2);
}

[data-theme="sepia"] .trans-select {
  background-color: rgba(92, 64, 51, 0.06);
  color: #2d241e;
  border-color: rgba(92, 64, 51, 0.18);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='rgba(45,36,30,0.6)' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
}

[data-theme="sepia"] .trans-select option {
  background: #fbf7ee;
  color: #2d241e;
}

[data-theme="sepia"] .translate-status-box {
  background: rgba(92, 64, 51, 0.04);
  border-color: rgba(92, 64, 51, 0.1);
}

/* ========================================================
   Almost-Fullscreen Paragraph Interlinear Translation Modal
   ======================================================== */
.reader-paragraph-modal {
  position: fixed;
  inset: 0;
  z-index: 3200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(6px, 1.5vw, 16px);
  box-sizing: border-box;
  animation: paraFadeIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: auto;
}

@keyframes paraFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.para-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.para-modal-card {
  position: relative;
  z-index: 2;
  width: calc(100vw - clamp(12px, 3vw, 32px));
  height: calc(100vh - clamp(12px, 3vh, 32px));
  max-width: none;
  max-height: calc(100vh - clamp(12px, 3vh, 32px));
  display: flex;
  flex-direction: column;
  background-color: var(--reader-hud-bg, rgba(24, 24, 27, 0.98));
  color: var(--reader-text, #f4f4f5);
  border: 1px solid var(--reader-border, rgba(255, 255, 255, 0.12));
  border-radius: 14px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  overflow: hidden;
  box-sizing: border-box;
  animation: paraCardSlide 0.26s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes paraCardSlide {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.para-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--reader-border, rgba(255, 255, 255, 0.1));
  flex-shrink: 0;
}

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

.para-modal-title-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Floating Edge Navigation Buttons for Paragraphs */
.para-edge-nav {
  position: absolute;
  top: 40%;
  transform: translateY(-50%);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--reader-hud-bg, rgba(24, 24, 27, 0.88));
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--reader-border, rgba(255, 255, 255, 0.18));
  color: var(--reader-text, #f4f4f5);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 30;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.45);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  opacity: 0.8;
  padding: 0;
}

.para-edge-nav:hover {
  opacity: 1;
  transform: translateY(-50%) scale(1.1);
  background: #38bdf8;
  color: #000000;
  border-color: #38bdf8;
  box-shadow: 0 0 18px rgba(56, 189, 248, 0.55);
}

.para-edge-nav:active {
  transform: translateY(-50%) scale(0.96);
}

.para-edge-prev {
  left: 10px;
}

.para-edge-next {
  right: 10px;
}

@media (max-width: 640px) {
  .para-edge-nav {
    width: 36px;
    height: 36px;
    opacity: 0.85;
  }
  .para-edge-prev {
    left: 6px;
  }
  .para-edge-next {
    right: 6px;
  }
}

.para-modal-sparkle {
  color: #38bdf8;
  font-size: 1.15rem;
}

.para-modal-title {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--reader-text, #f4f4f5);
}

.para-modal-lang-badge {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 9999px;
  background: rgba(56, 189, 248, 0.15);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.para-modal-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-para-action {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--reader-text-muted, #a1a1aa);
  border: 1px solid var(--reader-border, rgba(255, 255, 255, 0.08));
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-para-action:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--reader-text, #f4f4f5);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-para-action.copied {
  background: rgba(56, 189, 248, 0.2);
  color: #38bdf8;
  border-color: #38bdf8;
}

.para-modal-body {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-sizing: border-box;
  padding: 0;
}

.para-modal-content {
  flex: 1;
  min-height: 0;
  width: 100%;
  height: 100%;
  display: flex;
  box-sizing: border-box;
}

.para-modal-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  gap: 16px;
  color: var(--reader-text-muted, #a1a1aa);
  width: 100%;
}

.para-modal-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid rgba(56, 189, 248, 0.2);
  border-top-color: #38bdf8;
  border-radius: 50%;
  animation: paraSpin 0.8s linear infinite;
}

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

.para-modal-loading-text {
  font-size: 0.95rem;
  font-weight: 500;
}

/* Modal Typography Fonts */
.reader-paragraph-modal[data-font="serif"] .para-modal-card {
  font-family: "Georgia", "Times New Roman", "Baskerville", serif;
}
.reader-paragraph-modal[data-font="sans"] .para-modal-card {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
.reader-paragraph-modal[data-font="mono"] .para-modal-card {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
.reader-paragraph-modal[data-font="dyslexic"] .para-modal-card {
  font-family: "OpenDyslexic", "Comic Sans MS", cursive, sans-serif;
}

/* Responsive Flexbox Modal Layout: Text pane on left (50%), AI Insights panel on right (50%) */
.para-modal-layout {
  display: flex;
  flex-direction: row; /* Wide screen: side-by-side text and AI Insights */
  width: 100%;
  height: 100%;
  min-height: 0;
  box-sizing: border-box;
  overflow: hidden;
}

/* Left section: Paragraph Texts (half width on wide screens) */
.para-modal-trans-pane {
  flex: 1 1 50%;
  width: 50%;
  max-width: 50%;
  max-height: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  overflow-y: auto;
  padding: clamp(16px, 2.5vw, 28px);
  display: flex;
  flex-direction: column;
  -webkit-overflow-scrolling: touch;
  box-sizing: border-box;
}

/* Stream Header (Legend, View Switcher & Master Listen) */
.para-stream-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--reader-border, rgba(255, 255, 255, 0.1));
  flex-shrink: 0;
}

.para-stream-legend {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--reader-text-muted, #a1a1aa);
  user-select: none;
}

.para-stream-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.para-stream-actions {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

/* Segmented View Switcher: Sentences vs Parallel */
.para-view-switch {
  display: inline-flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--reader-border, rgba(255, 255, 255, 0.14));
  border-radius: 18px;
  padding: 2px;
  gap: 2px;
}

.btn-para-view-switch {
  border: none;
  background: transparent;
  color: var(--reader-text-muted, #a1a1aa);
  font-size: 0.74rem;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 14px;
  cursor: pointer;
  transition: all 0.18s ease;
  user-select: none;
}

.btn-para-view-switch:hover {
  color: var(--reader-text, #ffffff);
}

.btn-para-view-switch.active {
  background: #38bdf8;
  color: #09090b;
  font-weight: 600;
  box-shadow: 0 1px 4px rgba(56, 189, 248, 0.3);
}

/* Sentence-by-sentence list */
.para-sentences-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  width: 100%;
}

.para-sentence-row {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 18px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--reader-border, rgba(255, 255, 255, 0.08));
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-sizing: border-box;
}

.para-sentence-row:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(56, 189, 248, 0.25);
}

.para-sentence-meta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
  padding-top: 3px;
}

.para-sentence-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  padding: 0 4px;
  border-radius: 11px;
  background: rgba(168, 85, 247, 0.2);
  color: #c084fc;
  font-size: 0.72rem;
  font-weight: 700;
  border: 1px solid rgba(168, 85, 247, 0.35);
  user-select: none;
}

.btn-sentence-tts {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: var(--reader-text-muted, #71717a);
  cursor: pointer;
  transition: all 0.18s ease;
  padding: 0;
}

.btn-sentence-tts:hover {
  color: var(--reader-text, #ffffff);
  background: rgba(255, 255, 255, 0.1);
}

.btn-sentence-tts svg {
  width: 13px;
  height: 13px;
}

.btn-sentence-tts.speaking {
  color: #38bdf8;
  animation: tts-pulse 1.2s ease-in-out infinite;
}

.btn-sentence-tts.loading {
  color: #c084fc;
  animation: tts-spin 1s linear infinite;
}

.para-sentence-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.para-sentence-orig-text {
  font-size: clamp(1.05rem, 1.22vw, 1.24rem);
  line-height: 1.75;
  color: var(--reader-text, #f4f4f5);
  word-break: normal;
  overflow-wrap: break-word;
}

.para-sentence-trans-text {
  font-size: clamp(0.98rem, 1.15vw, 1.16rem);
  line-height: 1.7;
  color: #38bdf8;
  word-break: normal;
  overflow-wrap: break-word;
}

/* Parallel / Side-by-side mode container */
.para-parallel-body {
  display: flex;
  flex-direction: row;
  gap: clamp(16px, 2.5vw, 32px);
  width: 100%;
}

@media (max-width: 640px) {
  .para-parallel-body {
    flex-direction: column;
    gap: 16px;
  }
  .para-sentence-row {
    padding: 12px 14px;
    gap: 10px;
  }
  .para-stream-header {
    gap: 8px;
  }
}

.para-text-block {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.para-block-tag {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--reader-text-muted, #a1a1aa);
  user-select: none;
}

.para-block-tag-left {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-para-tts {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 14px;
  border: 1px solid var(--reader-border, rgba(255, 255, 255, 0.16));
  background: rgba(255, 255, 255, 0.05);
  color: var(--reader-text-muted, #a1a1aa);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: none;
  cursor: pointer;
  transition: all 0.18s ease;
  user-select: none;
}

.btn-para-tts:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.35);
  color: var(--reader-text, #ffffff);
  transform: translateY(-1px);
}

.btn-para-tts:active {
  transform: translateY(0);
}

.btn-para-tts .tts-icon {
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-para-tts .tts-icon svg {
  width: 14px;
  height: 14px;
  color: currentColor;
}

.btn-para-tts.loading {
  opacity: 0.85;
  cursor: wait;
}

.btn-para-tts.loading .tts-icon svg {
  animation: tts-spin 1s linear infinite;
}

@keyframes tts-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.btn-para-tts.speaking {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.45);
  color: var(--reader-text, #ffffff);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.12);
}

.btn-para-tts.speaking .tts-icon svg {
  color: currentColor;
  animation: tts-pulse 1.2s ease-in-out infinite;
}

@keyframes tts-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.15); opacity: 0.8; }
}

.para-simple-orig.speaking {
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.25);
  border-radius: 6px;
  transition: box-shadow 0.2s ease;
}

/* Suppress mobile browser callouts & contextual search popups over reading text */
.book-viewport,
.page-container,
.page-content,
.para-simple-text {
  -webkit-touch-callout: none;
}

.para-block-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

.orig-dot {
  background-color: #a855f7;
  box-shadow: 0 0 6px rgba(168, 85, 247, 0.5);
}

.trans-dot {
  background-color: #38bdf8;
  box-shadow: 0 0 6px rgba(56, 189, 248, 0.5);
}

.para-simple-text {
  font-size: clamp(1.05rem, 1.25vw, 1.28rem);
  line-height: 1.8;
  letter-spacing: 0.01em;
  user-select: text;
  -webkit-user-select: text;
  word-break: normal;
  overflow-wrap: break-word;
}

.para-simple-orig {
  color: var(--reader-text, #f4f4f5);
}

.para-simple-trans {
  color: #38bdf8;
}

.para-pane-divider {
  width: 1px;
  height: auto;
  align-self: stretch;
  background: var(--reader-border, rgba(255, 255, 255, 0.1));
  flex-shrink: 0;
  margin: 0;
}

@media (max-width: 640px) {
  .para-pane-divider {
    width: 100%;
    height: 1px;
    align-self: auto;
  }
}

/* Right section: AI Insights Pane (half width on wide screens) */
.para-modal-ai-pane {
  flex: 1 1 50%;
  width: 50%;
  max-width: 50%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  border-top: none;
  border-left: 1px solid var(--reader-border, rgba(255, 255, 255, 0.12));
  background: rgba(0, 0, 0, 0.18);
  box-sizing: border-box;
}

/* Narrow screens: Stack vertically with text on top and AI Insights on bottom */
@media (max-width: 800px) {
  .para-modal-layout {
    flex-direction: column;
  }

  .para-modal-trans-pane {
    flex: 1 1 auto;
    width: 100%;
    max-width: 100%;
    max-height: 55vh;
    height: auto;
  }

  .para-modal-ai-pane {
    flex: 1 1 0%;
    width: 100%;
    max-width: 100%;
    min-height: 140px;
    height: auto;
    border-left: none;
    border-top: 1px solid var(--reader-border, rgba(255, 255, 255, 0.12));
  }
}

.para-ai-pane-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--reader-border, rgba(255, 255, 255, 0.08));
  flex-shrink: 0;
  gap: 10px;
}

.para-ai-pane-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--reader-text, #f4f4f5);
}

.para-ai-target-badge {
  font-size: 0.82rem;
  font-weight: 500;
  color: #c084fc;
  background: rgba(168, 85, 247, 0.14);
  border: 1px solid rgba(168, 85, 247, 0.28);
  padding: 3px 10px;
  border-radius: 6px;
  max-width: 220px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.para-ai-pane-body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: clamp(16px, 2vw, 24px);
  -webkit-overflow-scrolling: touch;
  box-sizing: border-box;
}

.para-ai-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 48px 20px;
  color: var(--reader-text-muted, #71717a);
}

.para-ai-placeholder-icon {
  font-size: 2rem;
  color: #a855f7;
  margin-bottom: 12px;
  opacity: 0.7;
}

.para-ai-placeholder-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--reader-text, #e4e4e7);
  margin-bottom: 6px;
}

.para-ai-placeholder-sub {
  font-size: 0.88rem;
  line-height: 1.5;
  max-width: 320px;
  margin: 0 auto;
}

.para-ai-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 60px 20px;
  color: var(--reader-text-muted, #a1a1aa);
  font-size: 0.95rem;
}

.para-ai-result {
  font-size: 1.02rem;
  line-height: 1.7;
  color: var(--reader-text, #f4f4f5);
  user-select: text;
  -webkit-user-select: text;
}

.para-ai-result h3,
.para-ai-result .ai-analysis-h3 {
  font-size: 1.12rem;
  font-weight: 600;
  margin: 18px 0 10px 0;
  color: #c084fc;
}

.para-ai-result h3:first-child,
.para-ai-result .ai-analysis-h3:first-child {
  margin-top: 0;
}

.para-ai-result ul {
  margin: 10px 0 18px 20px;
  padding: 0;
}

.para-ai-result li {
  margin-bottom: 8px;
  line-height: 1.6;
}

.para-ai-result code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.9em;
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 6px;
  border-radius: 4px;
}

.para-modal-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  gap: 14px;
  text-align: center;
}

.para-modal-error-icon {
  font-size: 2rem;
}

.para-modal-error-msg {
  font-size: 0.95rem;
  color: #f87171;
  max-width: 400px;
  line-height: 1.5;
}

.para-modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  border-top: 1px solid var(--reader-border, rgba(255, 255, 255, 0.08));
  font-size: 0.8rem;
  color: var(--reader-text-muted, #71717a);
  flex-shrink: 0;
}

.para-modal-footer-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.para-modal-model {
  font-weight: 500;
  color: var(--reader-text-muted, #a1a1aa);
}

.para-modal-status {
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.72rem;
  background: rgba(255, 255, 255, 0.08);
}

.para-modal-hint {
  font-size: 0.75rem;
}

/* Light theme for paragraph modal and AI analysis modal */
[data-theme="light"] .para-modal-card,
[data-theme="light"] .ai-popup-card {
  background-color: #ffffff;
  color: #18181b;
  border-color: rgba(0, 0, 0, 0.12);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.2);
}

[data-theme="light"] .para-modal-backdrop,
[data-theme="light"] .ai-popup-backdrop {
  background: rgba(0, 0, 0, 0.35);
}

[data-theme="light"] .para-modal-header,
[data-theme="light"] .ai-popup-header {
  border-bottom-color: rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .para-modal-title,
[data-theme="light"] .ai-popup-title {
  color: #18181b;
}

[data-theme="light"] .para-modal-actions .btn-para-action,
[data-theme="light"] .ai-popup-actions .btn-ai-action {
  background: rgba(0, 0, 0, 0.05);
  color: #52525b;
  border-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .para-modal-actions .btn-para-action:hover,
[data-theme="light"] .ai-popup-actions .btn-ai-action:hover {
  background: rgba(0, 0, 0, 0.1);
  color: #18181b;
}

[data-theme="light"] .ai-target-word {
  color: #18181b;
  background: rgba(147, 51, 234, 0.08);
  border-left-color: #9333ea;
}

[data-theme="light"] .ai-popup-body strong {
  color: #18181b;
}

[data-theme="light"] .ai-popup-body h3,
[data-theme="light"] .ai-popup-body .ai-analysis-h3 {
  color: #7e22ce;
}

[data-theme="light"] .ai-popup-body code {
  background: rgba(0, 0, 0, 0.06);
  color: #18181b;
}

[data-theme="light"] .ai-popup-footer {
  border-top-color: rgba(0, 0, 0, 0.08);
  color: #71717a;
}

[data-theme="light"] .para-modal-ai-pane {
  background: rgba(0, 0, 0, 0.02);
  border-color: rgba(0, 0, 0, 0.08);
}
[data-theme="light"] .para-ai-pane-header {
  border-color: rgba(0, 0, 0, 0.08);
}
[data-theme="light"] .para-ai-pane-title {
  color: #18181b;
}
[data-theme="light"] .para-ai-placeholder-title {
  color: #18181b;
}
[data-theme="light"] .para-ai-placeholder-sub {
  color: #71717a;
}
[data-theme="light"] .para-simple-orig {
  color: #18181b;
}
[data-theme="light"] .para-simple-trans {
  color: #0284c7;
}
[data-theme="light"] .para-sentence-row {
  background: rgba(0, 0, 0, 0.02);
  border-color: rgba(0, 0, 0, 0.08);
}
[data-theme="light"] .para-sentence-orig-text {
  color: #18181b;
}
[data-theme="light"] .para-sentence-trans-text {
  color: #0284c7;
}
[data-theme="light"] .para-pane-divider {
  background: rgba(0, 0, 0, 0.08);
}
[data-theme="light"] .para-ai-result {
  color: #18181b;
}
[data-theme="light"] .para-ai-result h3,
[data-theme="light"] .para-ai-result .ai-analysis-h3 {
  color: #7e22ce;
}
[data-theme="light"] .para-ai-result code {
  background: rgba(0, 0, 0, 0.06);
  color: #18181b;
}

[data-theme="light"] .para-modal-footer {
  border-top-color: rgba(0, 0, 0, 0.08);
  color: #71717a;
}

/* Sepia theme for paragraph modal and AI analysis modal */
[data-theme="sepia"] .para-modal-card,
[data-theme="sepia"] .ai-popup-card {
  background-color: #fbf7ee;
  color: #2d241e;
  border-color: rgba(92, 64, 51, 0.18);
  box-shadow: 0 24px 64px rgba(92, 64, 51, 0.2);
}

[data-theme="sepia"] .para-modal-backdrop,
[data-theme="sepia"] .ai-popup-backdrop {
  background: rgba(45, 36, 30, 0.4);
}

[data-theme="sepia"] .para-modal-header,
[data-theme="sepia"] .ai-popup-header {
  border-bottom-color: rgba(92, 64, 51, 0.12);
}

[data-theme="sepia"] .para-modal-title,
[data-theme="sepia"] .ai-popup-title {
  color: #2d241e;
}

[data-theme="sepia"] .ai-popup-actions .btn-ai-action {
  background: rgba(92, 64, 51, 0.08);
  color: #78350f;
  border-color: rgba(92, 64, 51, 0.15);
}

[data-theme="sepia"] .ai-popup-actions .btn-ai-action:hover {
  background: rgba(92, 64, 51, 0.15);
  color: #2d241e;
}

[data-theme="sepia"] .ai-target-word {
  color: #2d241e;
  background: rgba(147, 51, 234, 0.08);
  border-left-color: #9333ea;
}

[data-theme="sepia"] .ai-popup-body strong {
  color: #2d241e;
}

[data-theme="sepia"] .ai-popup-body h3,
[data-theme="sepia"] .ai-popup-body .ai-analysis-h3 {
  color: #7e22ce;
}

[data-theme="sepia"] .ai-popup-body code {
  background: rgba(92, 64, 51, 0.08);
  color: #2d241e;
}

[data-theme="sepia"] .ai-popup-footer {
  border-top-color: rgba(92, 64, 51, 0.12);
  color: #78350f;
}

[data-theme="sepia"] .para-modal-ai-pane {
  background: rgba(92, 64, 51, 0.04);
  border-color: rgba(92, 64, 51, 0.12);
}
[data-theme="sepia"] .para-ai-pane-header {
  border-color: rgba(92, 64, 51, 0.12);
}
[data-theme="sepia"] .para-ai-pane-title {
  color: #2d241e;
}
[data-theme="sepia"] .para-ai-placeholder-title {
  color: #2d241e;
}
[data-theme="sepia"] .para-ai-placeholder-sub {
  color: #78350f;
}
[data-theme="sepia"] .para-simple-orig {
  color: #2d241e;
}
[data-theme="sepia"] .para-simple-trans {
  color: #854d0e;
}
[data-theme="sepia"] .para-sentence-row {
  background: rgba(92, 64, 51, 0.03);
  border-color: rgba(92, 64, 51, 0.12);
}
[data-theme="sepia"] .para-sentence-orig-text {
  color: #2d241e;
}
[data-theme="sepia"] .para-sentence-trans-text {
  color: #854d0e;
}
[data-theme="sepia"] .para-pane-divider {
  background: rgba(92, 64, 51, 0.12);
}
[data-theme="sepia"] .para-ai-result {
  color: #2d241e;
}
[data-theme="sepia"] .para-ai-result h3,
[data-theme="sepia"] .para-ai-result .ai-analysis-h3 {
  color: #7e22ce;
}
[data-theme="sepia"] .para-ai-result code {
  background: rgba(92, 64, 51, 0.08);
  color: #2d241e;
}

[data-theme="sepia"] .para-modal-footer {
  border-top-color: rgba(92, 64, 51, 0.12);
  color: #78350f;
}

/* Floating Toast Notification */
.reader-floating-toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(16px);
  background: rgba(24, 24, 27, 0.95);
  color: #f4f4f5;
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.reader-floating-toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

[data-theme="light"] .reader-floating-toast {
  background: #ffffff;
  color: #18181b;
  border-color: rgba(0, 0, 0, 0.12);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

[data-theme="sepia"] .reader-floating-toast {
  background: #fbf7ee;
  color: #2d241e;
  border-color: rgba(92, 64, 51, 0.18);
  box-shadow: 0 8px 24px rgba(92, 64, 51, 0.2);
}

/* ========================================================
   Paragraph Translation Button & Persistent Selection Borders
   ======================================================== */
.litread-para-trans-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  min-width: 22px;
  margin-right: 7px;
  vertical-align: -2px;
  border-radius: 5px;
  border: 1px solid rgba(148, 163, 184, 0.25);
  background: rgba(148, 163, 184, 0.08);
  color: #94a3b8;
  cursor: pointer;
  opacity: 0.55;
  transition: opacity 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  line-height: 1;
  position: relative;
  box-sizing: border-box;
}

/* Generous touch target for easy tapping on mobile without altering book layout */
.litread-para-trans-btn::after {
  content: '';
  position: absolute;
  top: -8px;
  bottom: -8px;
  left: -8px;
  right: -8px;
  border-radius: 8px;
}

.litread-para-trans-btn:hover,
.litread-para-trans-btn:focus-visible {
  opacity: 1;
  color: #38bdf8;
  border-color: #38bdf8;
  background: rgba(56, 189, 248, 0.18);
  transform: scale(1.08);
}

.litread-para-trans-btn:active {
  transform: scale(0.92);
}

.litread-para-trans-btn svg {
  width: 13px;
  height: 13px;
  display: block;
  pointer-events: none;
}

/* Selected paragraph with prominent border */
.litread-para-selected {
  position: relative;
  border: 1.5px solid #38bdf8 !important;
  border-left-width: 4.5px !important;
  border-radius: 6px;
  padding: 6px 12px !important;
  background: rgba(56, 189, 248, 0.08) !important;
  box-shadow: 0 0 16px rgba(56, 189, 248, 0.12);
  transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

/* Translated paragraph with subtle persistent border */
.litread-para-translated {
  position: relative;
  border: 1px dashed rgba(56, 189, 248, 0.45) !important;
  border-left: 4px solid rgba(56, 189, 248, 0.75) !important;
  border-radius: 6px;
  padding: 6px 12px !important;
  background: rgba(56, 189, 248, 0.04) !important;
  transition: background 0.25s ease, border-color 0.25s ease;
}

.litread-para-selected .litread-para-trans-btn,
.litread-para-translated .litread-para-trans-btn {
  opacity: 0.95;
  color: #38bdf8;
  border-color: #38bdf8;
  background: rgba(56, 189, 248, 0.18);
}

/* Light theme adaptations */
[data-theme="light"] .litread-para-trans-btn {
  color: #64748b;
  border-color: rgba(0, 0, 0, 0.15);
  background: rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .litread-para-trans-btn:hover,
[data-theme="light"] .litread-para-trans-btn:focus-visible {
  color: #0284c7;
  border-color: #0284c7;
  background: rgba(2, 132, 199, 0.12);
}

[data-theme="light"] .litread-para-selected {
  border-color: #0284c7 !important;
  border-left-color: #0284c7 !important;
  background: rgba(2, 132, 199, 0.07) !important;
  box-shadow: 0 0 16px rgba(2, 132, 199, 0.1);
}

[data-theme="light"] .litread-para-translated {
  border-color: rgba(2, 132, 199, 0.45) !important;
  border-left-color: rgba(2, 132, 199, 0.75) !important;
  background: rgba(2, 132, 199, 0.03) !important;
}

[data-theme="light"] .litread-para-selected .litread-para-trans-btn,
[data-theme="light"] .litread-para-translated .litread-para-trans-btn {
  color: #0284c7;
  border-color: #0284c7;
  background: rgba(2, 132, 199, 0.12);
}

/* Sepia theme adaptations */
[data-theme="sepia"] .litread-para-trans-btn {
  color: #78350f;
  border-color: rgba(92, 64, 51, 0.22);
  background: rgba(92, 64, 51, 0.06);
}

[data-theme="sepia"] .litread-para-trans-btn:hover,
[data-theme="sepia"] .litread-para-trans-btn:focus-visible {
  color: #854d0e;
  border-color: #854d0e;
  background: rgba(133, 77, 14, 0.14);
}

[data-theme="sepia"] .litread-para-selected {
  border-color: #854d0e !important;
  border-left-color: #854d0e !important;
  background: rgba(133, 77, 14, 0.08) !important;
  box-shadow: 0 0 16px rgba(133, 77, 14, 0.1);
}

[data-theme="sepia"] .litread-para-translated {
  border-color: rgba(133, 77, 14, 0.45) !important;
  border-left-color: rgba(133, 77, 14, 0.75) !important;
  background: rgba(133, 77, 14, 0.04) !important;
}

[data-theme="sepia"] .litread-para-selected .litread-para-trans-btn,
[data-theme="sepia"] .litread-para-translated .litread-para-trans-btn {
  color: #854d0e;
  border-color: #854d0e;
  background: rgba(133, 77, 14, 0.14);
}

/* Mobile optimizations for almost-fullscreen modal and paragraph buttons */
@media (max-width: 640px) {
  .reader-paragraph-modal {
    padding: 6px;
  }
  .para-modal-card {
    width: calc(100vw - 12px);
    height: calc(100vh - 12px);
    max-height: calc(100vh - 12px);
    border-radius: 10px;
  }
  .para-modal-header {
    padding: 10px 14px;
  }
  .para-modal-body {
    padding: 0;
  }
  .para-interlinear-container {
    gap: 10px;
  }
  .para-interlinear-row {
    padding: 12px 14px;
    gap: 6px;
    border-left-width: 3.5px;
  }
  .para-interlinear-orig {
    font-size: 1.05rem;
    line-height: 1.5;
  }
  .para-interlinear-trans {
    font-size: 0.96rem;
    line-height: 1.45;
  }
  .para-modal-footer {
    padding: 8px 14px;
  }
  .litread-para-trans-btn {
    width: 24px;
    height: 24px;
    min-width: 24px;
    margin-right: 8px;
    opacity: 0.65;
  }
  .litread-para-trans-btn svg {
    width: 14px;
    height: 14px;
  }
}