/* =========================================================
   ĐỌC DỄ — PREMIUM E-READER & PDF SYSTEM
   Designed with Left Sidebar for % progress, statistics,
   reading controls, and rich yellow word-by-word highlighting.
   ========================================================= */

:root {
  /* Default Paper Theme */
  --bg-app: #f6f5ef;
  --bg-surface: #ffffff;
  --bg-sheet: #fdfcf9;
  --text-primary: #1f2522;
  --text-secondary: #5d6761;
  --text-muted: #8b958f;
  --border-light: #e5e4dc;
  --border-medium: #d4d3c6;
  
  --accent: #1e4e3e;
  --accent-hover: #15392d;
  --accent-light: #ebf3ee;
  --accent-warm: #d97736;
  
  --yellow-highlighter: #ffeb3b;
  --yellow-highlighter-bg: rgba(255, 235, 59, 0.45);
  --yellow-highlighter-border: #f5a623;

  --shadow-sm: 0 2px 6px rgba(28, 35, 31, 0.04);
  --shadow-md: 0 10px 25px rgba(28, 35, 31, 0.06);
  --shadow-sheet: 0 14px 44px rgba(28, 35, 31, 0.08), 0 2px 8px rgba(28, 35, 31, 0.03);
  --shadow-lg: 0 22px 55px rgba(28, 35, 31, 0.14);

  --font-serif: "Merriweather", Georgia, "Times New Roman", serif;
  --font-lora: "Lora", Georgia, serif;
  --font-sans: "Inter", "Manrope", system-ui, -apple-system, sans-serif;
  --font-mono: "DM Mono", ui-monospace, monospace;

  /* Reader Dynamic Vars */
  --reader-font: var(--font-serif);
  --reader-font-size: 19px;
  --reader-line-height: 1.85;
  --reader-max-width: 820px;
  --reader-paragraph-spacing: 1.4em;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* THEMES */
body[data-theme="paper"] {
  --bg-app: #f6f5ef;
  --bg-surface: #ffffff;
  --bg-sheet: #fdfcf9;
  --text-primary: #1f2522;
  --text-secondary: #5d6761;
  --text-muted: #8b958f;
  --border-light: #e5e4dc;
  --border-medium: #d4d3c6;
  --accent: #1e4e3e;
  --accent-hover: #15392d;
  --accent-light: #ebf3ee;
}

body[data-theme="sepia"] {
  --bg-app: #eae2cc;
  --bg-surface: #f4ecda;
  --bg-sheet: #fbf5e7;
  --text-primary: #382c1e;
  --text-secondary: #6d5b47;
  --text-muted: #9c8a74;
  --border-light: #dfd4bd;
  --border-medium: #cebe9f;
  --accent: #8b5523;
  --accent-hover: #6e4219;
  --accent-light: #eeddc5;
}

body[data-theme="sage"] {
  --bg-app: #e2ebe0;
  --bg-surface: #ecf3ea;
  --bg-sheet: #f4f8f2;
  --text-primary: #202d24;
  --text-secondary: #526658;
  --text-muted: #7e9485;
  --border-light: #d1dfcf;
  --border-medium: #bccfba;
  --accent: #2c6347;
  --accent-hover: #1e4732;
  --accent-light: #dbe8dd;
}

body[data-theme="night"] {
  --bg-app: #121413;
  --bg-surface: #1a1e1b;
  --bg-sheet: #1f2421;
  --text-primary: #e2e6e3;
  --text-secondary: #a3aba5;
  --text-muted: #6e7670;
  --border-light: #29302b;
  --border-medium: #38423c;
  --accent: #4eb883;
  --accent-hover: #62cb97;
  --accent-light: #1e3328;
  --yellow-highlighter: #ffd600;
  --yellow-highlighter-bg: rgba(255, 214, 0, 0.42);
  --shadow-sheet: 0 14px 40px rgba(0, 0, 0, 0.45);
}

/* FONT SELECTIONS */
body[data-font="merriweather"] { --reader-font: var(--font-serif); }
body[data-font="lora"] { --reader-font: var(--font-lora); }
body[data-font="inter"] { --reader-font: var(--font-sans); }

/* RESET & BASE */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

[hidden] {
  display: none !important;
}

html, body {
  min-height: 100%;
  background-color: var(--bg-app);
  color: var(--text-primary);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

button, input, select {
  font: inherit;
  color: inherit;
  border: none;
  background: none;
}

button {
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.app-layout {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* =========================================================
   1. TOPBAR (Clean & focused)
   ========================================================= */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 60px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  backdrop-filter: blur(12px);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

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

.brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.03em;
  padding: 4px;
  border-radius: 8px;
}

.brand-icon {
  width: 30px;
  height: 30px;
  background: var(--accent);
  color: #ffffff;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 3px 8px rgba(30, 78, 62, 0.2);
}

.brand-text {
  font-family: "Manrope", sans-serif;
}

.brand-badge {
  font-size: 9.5px;
  font-weight: 700;
  font-family: var(--font-mono);
  background: var(--accent-light);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 5px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.reader-doc-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  background: var(--bg-app);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  max-width: 440px;
}

.pdf-tag {
  background: #fbe6db;
  color: #bf5223;
  font-size: 9px;
  font-weight: 800;
  font-family: var(--font-mono);
  padding: 2px 5px;
  border-radius: 4px;
}

.doc-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 220px;
}

.doc-size {
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.doc-status-badge {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 10px;
  font-family: var(--font-mono);
  color: var(--accent);
  background: var(--accent-light);
  padding: 2px 7px;
  border-radius: 10px;
  font-weight: 600;
}

.status-dot-pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

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

.reader-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.tool-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 7px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.tool-btn:hover {
  background: var(--bg-app);
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.icon-tool-btn {
  width: 32px;
  height: 32px;
  border-radius: 7px;
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  background: var(--bg-surface);
  transition: all var(--transition-fast);
}

.icon-tool-btn:hover {
  color: var(--text-primary);
  background: var(--bg-app);
  border-color: var(--border-medium);
}

.privacy-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-muted);
  background: var(--bg-app);
  padding: 4px 10px;
  border-radius: 20px;
  border: 1px solid var(--border-light);
}

.dot-green {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #3eb574;
}

/* =========================================================
   TTS BAR
   ========================================================= */
.tts-bar {
  background: var(--accent);
  color: #ffffff;
  padding: 8px 28px;
  box-shadow: var(--shadow-sm);
}

.tts-content {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.tts-status {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
}

.pulse-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #a9ffcd;
  box-shadow: 0 0 0 0 rgba(169, 255, 205, 0.7);
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(169, 255, 205, 0.7); }
  70% { transform: scale(1.1); box-shadow: 0 0 0 8px rgba(169, 255, 205, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(169, 255, 205, 0); }
}

.tts-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.tts-btn {
  width: 32px;
  height: 32px;
  background: rgba(255, 255, 255, 0.18);
  border-radius: 50%;
  color: #ffffff;
  font-size: 12px;
}

.tts-speed-selector {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
}

.tts-speed-selector select {
  background: rgba(255, 255, 255, 0.18);
  color: #ffffff;
  border-radius: 6px;
  padding: 3px 6px;
  font-size: 12px;
}

.tts-speed-selector select option {
  background: #1e4e3e;
  color: #ffffff;
}

.tts-close {
  color: rgba(255, 255, 255, 0.7);
  font-size: 18px;
  padding: 0 6px;
}

/* =========================================================
   2. WORKSPACE VIEW (Dropzone & Upload)
   ========================================================= */
.main-stage {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.workspace-view {
  max-width: 920px;
  width: 100%;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.hero-card {
  text-align: center;
}

.hero-eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--accent-warm);
  letter-spacing: 0.16em;
  margin-bottom: 16px;
}

.hero-title {
  font-size: clamp(34px, 5vw, 54px);
  font-weight: 800;
  line-height: 1.1;
  color: var(--text-primary);
  letter-spacing: -0.04em;
  margin-bottom: 16px;
}

.hero-title em {
  font-family: var(--font-serif);
  font-weight: 400;
  color: var(--accent);
  font-style: italic;
}

.hero-desc {
  max-width: 580px;
  margin: 0 auto 36px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-secondary);
}

.upload-dropzone {
  background: var(--bg-surface);
  border: 2px dashed var(--border-medium);
  border-radius: 18px;
  padding: 46px 24px;
  max-width: 720px;
  margin: 0 auto 36px;
  transition: all var(--transition-fast);
}

.upload-dropzone.dragging {
  border-color: var(--accent);
  background: var(--accent-light);
  transform: scale(1.01);
}

.dropzone-icon {
  width: 68px;
  height: 68px;
  background: var(--accent-light);
  color: var(--accent);
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
}

.upload-dropzone h2 {
  font-size: 21px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.upload-dropzone p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 22px;
}

.upload-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  background: var(--accent);
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  border-radius: 9px;
  box-shadow: 0 4px 14px rgba(31, 78, 61, 0.22);
  transition: all var(--transition-fast);
}

.upload-btn:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.upload-specs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 24px;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-muted);
  flex-wrap: wrap;
}

.spec-dot {
  color: var(--border-medium);
}

.quick-book-card {
  display: flex;
  align-items: center;
  gap: 24px;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: 18px;
  padding: 22px 24px;
  margin: 0 auto 36px;
  max-width: 720px;
  text-align: left;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast);
}

.quick-book-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.quick-book-cover {
  width: 110px;
  height: 145px;
  background: linear-gradient(145deg, #1d4b3c, #133328);
  border-radius: 8px;
  box-shadow: 3px 5px 14px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 12px 10px;
  color: #ffffff;
  position: relative;
  flex-shrink: 0;
}

.book-spine {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 6px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 8px 0 0 8px;
}

.quick-book-badge {
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: #ffcf99;
  font-family: var(--font-mono);
}

.quick-book-title {
  font-family: var(--font-serif);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.35;
}

.quick-book-sub {
  font-size: 9px;
  color: rgba(255, 255, 255, 0.7);
  font-family: var(--font-mono);
}

.quick-book-info h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.quick-book-info p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.quick-book-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.primary-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  background: var(--accent);
  color: #ffffff;
  font-size: 13px;
  font-weight: 700;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(31, 78, 61, 0.2);
}

.primary-action-btn:hover {
  background: var(--accent-hover);
}

.quick-hint {
  font-size: 11.5px;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.recent-shelf {
  max-width: 720px;
  margin: 40px auto 0;
  text-align: left;
}

.shelf-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.shelf-header h3 {
  font-size: 12px;
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.shelf-line {
  flex: 1;
  height: 1px;
  background: var(--border-light);
}

.shelf-count {
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.recent-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.recent-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 18px;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  transition: all var(--transition-fast);
}

.recent-card:hover {
  border-color: var(--border-medium);
  box-shadow: var(--shadow-sm);
}

.recent-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.recent-book-icon {
  width: 36px;
  height: 42px;
  background: var(--accent-light);
  color: var(--accent);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 10px;
  font-family: var(--font-mono);
}

.recent-meta strong {
  display: block;
  font-size: 13.5px;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.recent-meta small {
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.recent-resume-btn {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--accent);
  padding: 6px 12px;
  border-radius: 6px;
}

.recent-resume-btn:hover {
  background: var(--accent-light);
}

/* =========================================================
   3. READER 2-COLUMN LAYOUT: SIDEBAR ON LEFT, CONTENT ON RIGHT
   ========================================================= */
.reader-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
  padding: 24px 28px 80px;
}

/* LEFT SIDEBAR (Progress % & All Functional Controls) */
.reader-sidebar {
  position: sticky;
  top: 76px;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 22px 18px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 18px;
  height: fit-content;
  max-height: calc(100vh - 96px);
  overflow-y: auto;
  scrollbar-width: thin;
}

.sidebar-section {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-light);
}

.sidebar-section:last-of-type {
  border-bottom: none;
  padding-bottom: 0;
}

.sidebar-label {
  font-size: 10.5px;
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* PROGRESS RING (% ĐÃ ĐỌC) */
.progress-ring {
  width: 116px;
  height: 116px;
  border-radius: 50%;
  background: conic-gradient(var(--accent) var(--progress-deg, 0deg), var(--border-light) 0deg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 6px auto 10px;
  transition: background 0.2s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.progress-ring-inner {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: var(--bg-surface);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.progress-ring strong {
  font-size: 26px;
  font-weight: 800;
  color: var(--accent);
  font-family: var(--font-mono);
  line-height: 1;
}

.progress-ring span {
  font-size: 10.5px;
  color: var(--text-muted);
  margin-top: 3px;
  font-weight: 600;
}

.progress-track {
  height: 5px;
  background: var(--border-light);
  border-radius: 4px;
  width: 100%;
  overflow: hidden;
}

.progress-track span {
  display: block;
  height: 100%;
  background: var(--accent);
  border-radius: 4px;
  transition: width 0.2s ease;
}

/* STATS */
.reader-stat {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 0;
  font-size: 12px;
  color: var(--text-secondary);
}

.stat-value-group {
  display: flex;
  align-items: center;
  gap: 4px;
}

.stat-value-group input {
  width: 38px;
  text-align: center;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent);
  border-bottom: 1.5px solid var(--accent);
  font-size: 12px;
}

.stat-value-group input:focus {
  outline: none;
  background: var(--bg-app);
}

.stat-slash {
  color: var(--text-muted);
  font-size: 11px;
}

.reader-stat strong {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 12px;
}

/* SIDEBAR SEGMENTED MODE SWITCH */
.sidebar-segmented {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: var(--bg-app);
  padding: 4px;
  border-radius: 9px;
  border: 1px solid var(--border-light);
}

.sidebar-seg-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.sidebar-seg-btn:hover {
  color: var(--text-primary);
}

.sidebar-seg-btn.active {
  background: var(--bg-surface);
  color: var(--accent);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

/* SIDEBAR TOOLS */
.sidebar-tools-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.sidebar-action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 6px;
  background: var(--bg-app);
  border: 1px solid var(--border-light);
  border-radius: 7px;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.sidebar-action-btn:hover {
  background: var(--accent-light);
  color: var(--accent);
  border-color: var(--accent);
}

.sidebar-action-btn.active {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

/* SIDEBAR QUICK APPEARANCE */
.sidebar-font-size-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-app);
  padding: 3px 6px;
  border-radius: 7px;
  border: 1px solid var(--border-light);
}

.size-btn-mini {
  width: 26px;
  height: 26px;
  border-radius: 5px;
  font-weight: 700;
  font-size: 11px;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
}

.size-btn-mini:hover {
  background: var(--bg-app);
}

.font-size-badge {
  font-size: 11.5px;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent);
}

/* FONT PRESETS GRID (Nhỏ, Vừa, Lớn, Rất lớn) */
.font-presets-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
  margin-top: 6px;
}

.font-preset-btn {
  padding: 4px 2px;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 5px;
  font-size: 10px;
  font-weight: 600;
  color: var(--text-secondary);
  text-align: center;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.font-preset-btn:hover {
  background: var(--bg-app);
  color: var(--accent);
  border-color: var(--border-medium);
}

.font-preset-btn.active {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

/* UNIFORM FONT SIZE TOGGLE ROW */
.uniform-font-toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  margin-top: 8px;
  padding: 5px 8px;
  background: var(--bg-app);
  border-radius: 6px;
  font-size: 10.5px;
  color: var(--text-secondary);
}

.uniform-font-toggle-row label {
  cursor: pointer;
  user-select: none;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}

.uniform-font-toggle-row input[type="checkbox"] {
  accent-color: var(--accent);
  cursor: pointer;
}

/* UNIFORM READING FONT (Prevents oversized headings or sudden text jumps) */
.uniform-reading-font .sheet-body h1,
.uniform-reading-font .sheet-body h2,
.uniform-reading-font .sheet-body h3 {
  font-size: 1.15em !important;
  font-weight: 700 !important;
  margin: 1.1em 0 0.5em !important;
  text-align: left !important;
}

.uniform-reading-font .sheet-body p.lead {
  font-size: 1em !important;
}

.sidebar-theme-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 2px 4px;
}

.theme-dot {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1.5px solid var(--border-medium);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.theme-dot:hover {
  transform: scale(1.15);
}

.theme-dot.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-light);
}

.theme-dot.theme-paper { background: #fdfcf9; }
.theme-dot.theme-sepia { background: #fbf5e7; }
.theme-dot.theme-sage { background: #f4f8f2; }
.theme-dot.theme-night { background: #1f2421; }

.sidebar-link-btn {
  display: block;
  width: 100%;
  text-align: right;
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 600;
  padding: 2px 0;
}

.sidebar-link-btn:hover {
  color: var(--accent);
}

.sidebar-upload-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px;
  border: 1px dashed var(--accent);
  background: var(--accent-light);
  color: var(--accent);
  border-radius: 8px;
  font-size: 12px;
  font-weight: 700;
  transition: all var(--transition-fast);
}

.sidebar-upload-btn:hover {
  background: var(--accent);
  color: #ffffff;
}

.sidebar-key-hint {
  background: var(--bg-app);
  border-radius: 8px;
  padding: 10px;
  border: 1px solid var(--border-light);
  font-size: 11px;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.key-hint-title {
  font-size: 9.5px;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

.key-hint-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.key-caps {
  display: flex;
  gap: 3px;
}

.key-cap {
  display: inline-block;
  padding: 1px 4px;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-primary);
  font-weight: 700;
}

/* =========================================================
   RIGHT READING PANEL
   ========================================================= */
.reading-panel {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.reading-toolbar-bar {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 8px 16px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
}

.toolbar-nav-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 7px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.page-nav-btn:not(:disabled):hover {
  background: var(--bg-app);
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.page-nav-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.page-status-pill {
  font-size: 12px;
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--accent);
  padding: 4px 10px;
  background: var(--accent-light);
  border-radius: 6px;
}

.toolbar-scrubber-wrap {
  flex: 1;
  max-width: 360px;
  margin: 0 16px;
  position: relative;
  display: flex;
  align-items: center;
}

.progress-scrubber {
  width: 100%;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--border-light);
  border-radius: 4px;
  outline: none;
  cursor: pointer;
}

.progress-scrubber::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-surface);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  cursor: grab;
}

.progress-tooltip {
  position: absolute;
  top: -28px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--text-primary);
  color: var(--bg-sheet);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 10px;
  font-family: var(--font-mono);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.toolbar-scrubber-wrap:hover .progress-tooltip {
  opacity: 1;
}

/* TOOLBAR FONT SIZE QUICK CONTROLS */
.toolbar-font-group {
  display: flex;
  align-items: center;
  gap: 3px;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 7px;
  padding: 2px 4px;
}

.toolbar-font-btn {
  padding: 3px 8px;
  font-size: 11px;
  font-weight: 700;
  color: var(--text-secondary);
  border-radius: 5px;
  background: transparent;
  transition: all var(--transition-fast);
}

.toolbar-font-btn:hover {
  background: var(--bg-app);
  color: var(--accent);
}

.toolbar-font-badge {
  font-size: 11.5px;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent);
  padding: 0 4px;
  min-width: 42px;
  text-align: center;
}

/* COMPACT RIGHT-SIDE OCR BUTTON IN TOOLBAR */
.toolbar-ocr-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 11px;
  background: var(--accent-light);
  border: 1px solid rgba(46, 125, 50, 0.25);
  border-radius: 7px;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--accent);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.toolbar-ocr-btn:hover {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

.toolbar-ocr-btn.running {
  background: #fff3e0;
  color: #e65100;
  border-color: #ffb74d;
  animation: pulseOcr 1.2s infinite ease-in-out;
}

@keyframes pulseOcr {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.65; }
}

.pdf-zoom-group {
  display: flex;
  align-items: center;
  border: 1px solid var(--border-light);
  border-radius: 7px;
  background: var(--bg-surface);
  overflow: hidden;
}

.zoom-btn {
  padding: 4px 8px;
  font-size: 11.5px;
  font-weight: 700;
  color: var(--text-secondary);
}

.zoom-btn:hover {
  background: var(--bg-app);
  color: var(--text-primary);
}

.zoom-val {
  font-size: 11px;
  font-family: var(--font-mono);
  padding: 0 6px;
  color: var(--text-muted);
}

/* =========================================================
   OCR SCAN BANNER
   ========================================================= */
.ocr-banner {
  background: #fff8f0;
  border: 1px solid #fed7aa;
  border-radius: 10px;
  padding: 10px 18px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ocr-banner-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.ocr-badge-icon {
  font-size: 18px;
}

.ocr-banner-left strong {
  display: block;
  font-size: 12.5px;
  color: #9a3412;
}

.ocr-banner-left p {
  font-size: 11.5px;
  color: #c2410c;
  margin: 0;
}

.ocr-banner-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.ocr-primary-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #ea580c;
  color: #ffffff;
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 11.5px;
  font-weight: 700;
}

.ocr-close-btn {
  font-size: 18px;
  color: #9a3412;
  padding: 0 4px;
}

.ocr-progress-bar-wrap {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 8px 16px;
  margin-bottom: 16px;
}

.ocr-progress-inner {
  font-size: 11.5px;
  font-family: var(--font-mono);
  color: var(--accent);
}

.ocr-progress-track {
  height: 5px;
  background: var(--border-light);
  border-radius: 3px;
  margin-top: 5px;
  overflow: hidden;
}

.ocr-progress-fill {
  height: 100%;
  background: #ea580c;
  transition: width 0.2s ease;
}

/* =========================================================
   READING VIEWPORT & SURFACE
   ========================================================= */
.reader-viewport {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 700px;
}

.edge-nav-zone {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--text-muted);
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: 10;
  cursor: pointer;
}

.edge-prev { left: -25px; }
.edge-next { right: -25px; }

.edge-nav-zone:hover {
  opacity: 1;
}

.edge-arrow {
  font-size: 34px;
  line-height: 1;
  background: var(--bg-surface);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
  color: var(--text-primary);
}

.reader-surface {
  width: 100%;
  max-width: var(--reader-max-width);
  margin: 0 auto;
  position: relative;
}

.reader-loading {
  position: absolute;
  inset: 0;
  min-height: 450px;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 20;
  border-radius: 12px;
}

.loading-spinner {
  width: 30px;
  height: 30px;
  border: 3px solid var(--border-medium);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-msg {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

/* TEXT SHEET WITH GOLDEN YELLOW WORD HIGHLIGHT */
.text-sheet {
  background: var(--bg-sheet);
  border-radius: 14px;
  padding: 48px 56px 54px;
  box-shadow: var(--shadow-sheet);
  border: 1px solid var(--border-light);
  min-height: 720px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: background-color var(--transition-normal);
}

.sheet-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 20px;
  margin-bottom: 30px;
  border-bottom: 1px solid var(--border-light);
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.running-book-title {
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.running-word-counter {
  color: var(--accent);
  font-weight: 700;
}

.sheet-body {
  flex: 1;
  font-family: var(--reader-font);
  font-size: var(--reader-font-size);
  line-height: var(--reader-line-height);
  color: var(--text-primary);
  word-break: break-word;
}

.sheet-body h1,
.sheet-body h2,
.sheet-body h3 {
  font-family: var(--font-sans);
  color: var(--accent);
  margin: 1.5em 0 0.8em;
  line-height: 1.25;
}

.sheet-body h1 {
  font-size: 1.6em;
  font-weight: 800;
  text-align: center;
}

.sheet-body h2 {
  font-size: 1.3em;
  font-weight: 700;
}

.sheet-body h3 {
  font-size: 1.15em;
  font-weight: 600;
}

.sheet-body p {
  margin-bottom: var(--reader-paragraph-spacing);
  text-align: justify;
  text-justify: inter-word;
}

.sheet-body p:not(.lead):not(.no-indent) {
  text-indent: 1.8em;
}

.sheet-body p.lead {
  font-size: 1.12em;
  font-weight: 500;
  color: var(--text-secondary);
  text-indent: 0;
}

/* WORD TOKEN & ACTIVE YELLOW HIGHLIGHT IN TEXT */
.word-token {
  display: inline;
  padding: 0 1px;
  border-radius: 2px;
  cursor: pointer;
  transition: background-color 0.05s ease;
  font-weight: inherit !important;
  font-size: inherit !important;
  letter-spacing: inherit !important;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
  transform: none !important;
}

.word-token:hover {
  background: rgba(255, 235, 59, 0.25);
}

.word-token.active-highlight {
  background: #ffeb3b !important;
  color: #111111 !important;
  border-radius: 2px;
  outline: 2px solid rgba(245, 158, 11, 0.45);
  outline-offset: 1px;
  box-shadow: none !important;
  /* CRITICAL: Must inherit font-weight, font-size, letter-spacing to prevent ANY character jump or jitter */
  font-weight: inherit !important;
  font-size: inherit !important;
  letter-spacing: inherit !important;
  transform: none !important;
  display: inline;
}

.sheet-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 20px;
  margin-top: 30px;
  border-top: 1px solid var(--border-light);
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.sheet-page-num {
  font-weight: 700;
  color: var(--text-secondary);
}

.sheet-hint-text {
  font-size: 10px;
}

/* PDF CANVAS MODE WITH SOFT GOLDEN YELLOW WORD BOX */
.pdf-canvas-container {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  background: var(--bg-surface);
  box-shadow: var(--shadow-sheet);
  border-radius: 12px;
  padding: 24px;
  overflow: auto;
}

.pdf-canvas-wrap {
  position: relative;
  display: inline-block;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
}

#pdfCanvas {
  display: block;
  max-width: 100%;
  height: auto;
}

.pdf-word-highlight {
  position: absolute;
  background: var(--yellow-highlighter-bg);
  border-bottom: 2px solid var(--yellow-highlighter-border);
  border-radius: 3px;
  pointer-events: none;
  box-shadow: 0 0 0 1px rgba(255, 235, 59, 0.6);
  mix-blend-mode: multiply;
  transition: all 0.06s ease-out;
  z-index: 5;
}

.pdf-canvas-wrap .textLayer {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  overflow: hidden;
  opacity: 0.15;
  line-height: 1;
  z-index: 4;
}

/* BOTTOM DOCK */
.reading-bottom-dock {
  margin-top: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 30px;
  padding: 6px 16px;
  box-shadow: var(--shadow-sm);
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

.dock-btn {
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  padding: 6px 12px;
  border-radius: 20px;
  transition: background var(--transition-fast);
}

.dock-btn:hover {
  background: var(--accent-light);
}

.dock-progress-info {
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-secondary);
}

.dock-divider {
  width: 1px;
  height: 16px;
  background: var(--border-light);
}

.dock-action-link {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--accent-warm);
  padding: 4px 8px;
  border-radius: 6px;
}

/* =========================================================
   MODALS: PROCESSING & ERROR CARDS
   ========================================================= */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(18, 25, 21, 0.45);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 1000;
  animation: fadeIn 0.18s ease;
}

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

.processing-card {
  width: 100%;
  max-width: 480px;
  background: var(--bg-surface);
  border-radius: 16px;
  padding: 32px 30px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-light);
}

.processing-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.processing-icon-spin {
  width: 44px;
  height: 44px;
  background: var(--accent-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.spinner-ring {
  width: 22px;
  height: 22px;
  border: 2.5px solid var(--border-medium);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.processing-header h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 3px;
}

.proc-file-meta {
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.processing-steps {
  display: flex;
  flex-direction: column;
  gap: 11px;
  margin-bottom: 24px;
}

.proc-step {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
}

.proc-step .step-check {
  font-family: var(--font-mono);
  font-size: 12px;
  width: 18px;
  text-align: center;
}

.proc-step.active {
  color: var(--accent);
  font-weight: 700;
}

.proc-step.active .step-check {
  color: var(--accent);
}

.proc-step.done {
  color: var(--text-secondary);
}

.proc-step.done .step-check {
  color: #2e7d32;
  font-weight: 800;
}

.proc-progress-bar {
  height: 6px;
  background: var(--border-light);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 12px;
}

.proc-bar-fill {
  height: 100%;
  background: var(--accent);
  transition: width 0.3s ease;
}

.proc-status-msg {
  font-size: 11.5px;
  font-family: var(--font-mono);
  color: var(--text-muted);
  text-align: right;
}

/* ERROR CARD */
.error-card {
  width: 100%;
  max-width: 500px;
  background: var(--bg-surface);
  border-radius: 16px;
  padding: 30px;
  box-shadow: var(--shadow-lg);
  border: 1px solid #fed7aa;
}

.error-header {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 20px;
}

.error-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: #fee2e2;
  color: #dc2626;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  flex-shrink: 0;
}

.error-header h3 {
  font-size: 18px;
  font-weight: 700;
  color: #991b1b;
  margin-bottom: 3px;
}

#errorSubtitle {
  font-size: 13px;
  color: var(--text-secondary);
}

.error-body {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 24px;
}

.error-reason-box {
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 13px;
  color: #7f1d1d;
}

.error-solution-box {
  background: var(--bg-app);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 12.5px;
  color: var(--text-secondary);
}

.error-solution-box ul {
  padding-left: 18px;
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.error-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

.secondary-btn {
  padding: 9px 18px;
  border: 1px solid var(--border-medium);
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

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

/* APPEARANCE POPOVER */
.appearance-popover {
  position: fixed;
  top: 72px;
  right: 28px;
  width: 360px;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  z-index: 100;
  animation: popoverFadeIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes popoverFadeIn {
  from { opacity: 0; transform: translateY(-10px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

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

.popover-header h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}

.popover-close-btn {
  font-size: 20px;
  color: var(--text-muted);
  width: 28px;
  height: 28px;
  border-radius: 6px;
}

.popover-close-btn:hover {
  background: var(--bg-app);
}

.popover-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-height: 80vh;
  overflow-y: auto;
}

.setting-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.setting-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary);
}

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

.setting-value {
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--accent);
  font-weight: 700;
}

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

.theme-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 8px 4px;
  border-radius: 8px;
  border: 1.5px solid var(--border-light);
  background: var(--bg-app);
}

.theme-card.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-light);
}

.theme-swatch {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.theme-paper .theme-swatch { background: #fdfcf9; }
.theme-sepia .theme-swatch { background: #fbf5e7; }
.theme-sage .theme-swatch { background: #f4f8f2; }
.theme-night .theme-swatch { background: #1f2421; }

.theme-name {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-secondary);
}

.font-selector-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.font-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px 4px;
  border: 1.5px solid var(--border-light);
  border-radius: 8px;
  background: var(--bg-app);
}

.font-btn span {
  font-size: 13px;
  font-weight: 700;
}

.font-btn small {
  font-size: 9px;
  color: var(--text-muted);
}

.font-btn.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
}

.font-merriweather span { font-family: var(--font-serif); }
.font-lora span { font-family: var(--font-lora); }
.font-inter span { font-family: var(--font-sans); }

.font-size-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.font-size-controls input[type="range"] {
  flex: 1;
  height: 6px;
  -webkit-appearance: none;
  background: var(--border-light);
  border-radius: 3px;
}

.font-size-controls input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-surface);
}

.choice-segmented {
  display: flex;
  background: var(--bg-app);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 3px;
  gap: 2px;
}

.choice-btn {
  flex: 1;
  padding: 6px 0;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: 6px;
}

.choice-btn.active {
  background: var(--bg-surface);
  color: var(--accent);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

/* TOAST */
.app-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translate(-50%, 20px);
  background: var(--text-primary);
  color: var(--bg-sheet);
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
  transition: all 0.25s ease;
  z-index: 2000;
  box-shadow: var(--shadow-lg);
}

.app-toast.visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* EDIT PAGE TEXT MODAL */
.edit-page-card {
  width: 100%;
  max-width: 640px;
  background: var(--bg-surface);
  border-radius: 16px;
  padding: 24px 26px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  gap: 16px;
  animation: fadeIn 0.18s ease;
}

.edit-page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.edit-page-header h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.edit-page-header p {
  font-size: 12.5px;
  color: var(--text-secondary);
  margin: 0;
}

.edit-page-textarea {
  width: 100%;
  min-height: 260px;
  max-height: 50vh;
  padding: 14px 16px;
  border-radius: 10px;
  border: 1px solid var(--border-medium);
  background: var(--bg-app);
  color: var(--text-primary);
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.6;
  resize: vertical;
  outline: none;
  box-sizing: border-box;
}

.edit-page-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.edit-page-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.edit-page-actions-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.edit-page-actions-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.edit-modal-btn {
  padding: 7px 14px;
  border-radius: 8px;
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid var(--border-medium);
  background: var(--bg-surface);
  color: var(--text-secondary);
}

.edit-modal-btn:hover {
  background: var(--bg-app);
  color: var(--text-primary);
}

.edit-modal-btn.primary {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

.edit-modal-btn.primary:hover {
  filter: brightness(1.1);
}

.edit-modal-btn.secondary-action {
  background: var(--accent-light);
  color: var(--accent);
  border-color: rgba(46, 125, 50, 0.25);
}

.edit-modal-btn.secondary-action:hover {
  background: var(--accent);
  color: #ffffff;
}

/* =========================================================
   SEO LANDING SECTIONS & BRANDING
   ========================================================= */
.topbar-nav {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: 12px;
}

.topbar-nav-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
  padding: 4px 10px;
  border-radius: 6px;
}

.topbar-nav-link:hover {
  color: var(--accent);
  background: var(--accent-light);
}

.seo-landing-container {
  width: 100%;
  max-width: 1040px;
  margin: 36px auto 16px;
  display: flex;
  flex-direction: column;
  gap: 44px;
}

.seo-section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 24px;
}

.seo-badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 12px;
  border-radius: 20px;
  background: var(--accent-light);
  color: var(--accent);
  margin-bottom: 12px;
}

.seo-section-header h2 {
  font-family: "Manrope", sans-serif;
  font-size: 27px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.seo-section-header p {
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 6-GRID FEATURES */
.seo-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  gap: 20px;
}

.seo-feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.seo-feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-medium);
}

.feature-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-light);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.seo-feature-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 4px;
}

.seo-feature-card p {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* 3-STEP GUIDE */
.seo-steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.seo-step-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 24px;
  position: relative;
  box-shadow: var(--shadow-sm);
}

.step-num-badge {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 800;
  color: var(--accent);
  background: var(--accent-light);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.seo-step-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.seo-step-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.55;
  margin: 0;
}

/* FAQ ACCORDION */
.seo-faq-section {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  padding: 36px 32px;
  box-shadow: var(--shadow-sm);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  border: 1px solid var(--border-light);
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg-app);
  transition: all var(--transition-fast);
}

.faq-item[open] {
  border-color: var(--accent);
  background: var(--bg-surface);
  box-shadow: var(--shadow-sm);
}

.faq-summary {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-summary::-webkit-details-marker {
  display: none;
}

.faq-summary::after {
  content: "+";
  font-size: 20px;
  font-weight: 500;
  color: var(--accent);
  transition: transform var(--transition-fast);
}

.faq-item[open] .faq-summary::after {
  content: "−";
}

.faq-content {
  padding: 0 20px 18px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* SITE FOOTER */
.site-footer {
  margin-top: 40px;
  padding: 36px 20px 24px;
  border-top: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  text-align: center;
  background: transparent;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-brand img, .footer-brand svg {
  width: 28px;
  height: 28px;
}

.footer-brand span {
  font-family: "Manrope", sans-serif;
  font-size: 17px;
  font-weight: 800;
  color: var(--text-primary);
}

.footer-text {
  font-size: 12.5px;
  color: var(--text-muted);
  max-width: 600px;
  line-height: 1.5;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-link {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
}

.footer-link:hover {
  text-decoration: underline;
}

.footer-copy {
  font-size: 11.5px;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.visitor-pill {
  display: inline-flex;
  align-items: center;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-muted);
  background: var(--bg-app);
  padding: 4px 10px;
  border-radius: 20px;
  border: 1px solid var(--border-light);
  white-space: nowrap;
}

.workspace-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.visitor-pill strong {
  color: var(--accent);
  font-weight: 700;
  margin: 0 3px;
}

/* RESPONSIVE DESIGN */
@media (max-width: 980px) {
  .reader-layout {
    grid-template-columns: 1fr;
    padding: 16px;
    gap: 20px;
  }
  .reader-sidebar {
    position: static;
    max-height: none;
  }
  .topbar {
    padding: 0 16px;
  }
  .edge-nav-zone {
    display: none;
  }
  .text-sheet {
    padding: 32px 20px;
  }
  .appearance-popover {
    right: 12px;
    left: 12px;
    width: auto;
  }
}