@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Noto+Serif+Devanagari:wght@400;500;600;700&family=Noto+Serif:ital,wght@0,400;0,500;0,600;1,400&family=Crimson+Pro:wght@400;500;600&display=swap");

:root {
  /* Modern color palette */
  --color-text: #1a202c;
  --color-text-secondary: #4a5568;
  --color-bg: #ffffff;
  --color-bg-secondary: #f7fafc;
  --color-accent: #6366f1;
  --color-accent-hover: #4f46e5;
  --color-border: #e2e8f0;
  --color-shadow: rgba(0, 0, 0, 0.05);
  --color-shadow-md: rgba(0, 0, 0, 0.1);

  /* Typography */
  --font-sans:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-serif: "Crimson Pro", "Georgia", serif;
  --font-devanagari:
    "Noto Sans Devanagari", "Noto Sans Telugu", "Devanagari Sangam MN",
    "Kohinoor Telugu", -apple-system, system-ui, sans-serif;
  --font-sanskrit-devanagari:
    "Noto Sans Devanagari", "Noto Sans Telugu", "Devanagari Sangam MN",
    "Kohinoor Telugu", -apple-system, system-ui, sans-serif;
  --font-mono: "SF Mono", "Consolas", "Monaco", monospace;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  /* Layout */
  --max-width: 800px;
  --nav-height: 56px;
  --sidebar-width: 320px;

  /* Effects */
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 1px 2px 0 var(--color-shadow);
  --shadow-md: 0 4px 6px -1px var(--color-shadow-md);
  --shadow-lg: 0 10px 15px -3px var(--color-shadow-md);
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
}

[data-theme="dark"] {
  --color-text: #f7fafc;
  --color-text-secondary: #cbd5e0;
  --color-bg: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-accent: #818cf8;
  --color-accent-hover: #a5b4fc;
  --color-border: #334155;
  --color-shadow: rgba(0, 0, 0, 0.3);
  --color-shadow-md: rgba(0, 0, 0, 0.5);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: var(--transition);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Navigation */
.navigation {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-lg);
  z-index: 100;
  backdrop-filter: blur(8px);
  background-color: rgba(255, 255, 255, 0.95);
}

[data-theme="dark"] .navigation {
  background-color: rgba(15, 23, 42, 0.95);
}

.nav-center {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-button {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 1.25rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-button:hover:not(:disabled) {
  background: var(--color-bg-secondary);
  border-color: var(--color-accent);
  transform: translateY(-1px);
}

.nav-button:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.section-counter {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  min-width: 200px;
  text-align: center;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.control-button {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 1.125rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.control-button:hover {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
  transform: scale(1.05);
}

/* Main Content */
.content-container {
  margin-top: var(--nav-height);
  padding: var(--space-2xl) var(--space-lg);
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
}

.content {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
}

/* Chapter Header - Minimal */
.chapter-header {
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}

.chapter-header h1 {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
  line-height: 1.2;
}

.chapter-range {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
}

/* Grammar Sections */
.grammar-section {
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-border);
  border-bottom-color: rgba(0, 0, 0, 0.05);
  scroll-margin-top: calc(var(--nav-height) + var(--space-lg));
}

[data-theme="dark"] .grammar-section {
  border-bottom-color: rgba(255, 255, 255, 0.05);
}

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

/* Hide borders for missing/empty sections */
.grammar-section.missing {
  display: none;
}

.grammar-section:empty {
  display: none;
}

.section-anchor {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-sm));
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  padding: 0;
  background: transparent;
  z-index: 50;
}

.section-link {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
}

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

.section-image-btn,
.section-edit-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 0.9rem;
  padding: 0.15rem 0.3rem;
  margin: 0;
  border-radius: 3px;
  transition:
    opacity 0.2s,
    transform 0.2s,
    background-color 0.2s;
}

.section-image-btn {
  color: #2563eb;
}

.section-edit-btn {
  color: #059669;
}

[data-theme="dark"] .section-image-btn {
  color: #60a5fa;
}

[data-theme="dark"] .section-edit-btn {
  color: #34d399;
}

.section-image-btn:hover,
.section-edit-btn:hover {
  transform: scale(1.1);
  background-color: var(--color-bg-secondary);
}

/* Typography */
.content h2 {
  font-family: var(--font-serif);
  font-size: 1.875rem;
  font-weight: 600;
  color: var(--color-text);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
  line-height: 1.3;
}

.content h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-md);
  line-height: 1.4;
}

.content p {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.content strong {
  font-weight: 600;
  color: var(--color-text);
}

.content em {
  font-style: italic;
}

/* Sanskrit Text */
.sanskrit-inline,
.sanskrit-block,
.sanskrit-verse {
  font-weight: 300;
}

.sanskrit-inline {
  font-size: 1.1em;
  font-weight: 300;
}

.sanskrit-block {
  display: block;
  padding: var(--space-lg);
  background: var(--color-bg-secondary);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-md);
  margin: var(--space-lg) 0;
  font-size: 1.25rem;
  line-height: 1.9;
  font-weight: 300;
}

/* .note styles moved to Schema v2.0 section (line 1132) */

.sanskrit-verse {
  display: block;
  padding: var(--space-lg);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  margin: var(--space-lg) 0;
  font-size: 1.25rem;
}

.verse-line {
  padding: var(--space-xs) 0;
  line-height: 1.9;
}

/* Paninian References */
.panini-ref {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.125rem 0.5rem;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-sm);
  color: var(--color-accent);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition);
}

.panini-ref:hover {
  background: rgba(99, 102, 241, 0.15);
  border-color: var(--color-accent);
  transform: translateY(-1px);
}

.panini-ref::after {
  content: "↗";
  font-size: 0.75rem;
  opacity: 0.7;
}

/* Footnotes */
/* Horizontal rules - hide completely */
hr {
  display: none;
  margin: 0;
  padding: 0;
  border: none;
}

.footnotes {
  margin-top: var(--space-xl);
  padding-top: 0;
  border-top: none;
}

.footnote-ref {
  font-size: 0.75em;
  vertical-align: super;
  line-height: 0;
}

.footnote-ref a {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 600;
}

/* Parenthetical lists: (1), (2), (a), (b), etc. */
.paren-list {
  list-style-position: outside;
  padding-left: 1.75rem;
  margin: var(--space-md) 0;
}

.paren-list li {
  margin-bottom: var(--space-sm);
  padding-left: 0.25rem;
  line-height: 1.7;
}

.paren-list li::marker {
  font-weight: 400;
}

.footnote-list {
  list-style-position: outside;
  padding-left: 1.25rem;
  margin-top: var(--space-sm);
  margin-bottom: 0;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.footnote-list li {
  margin-bottom: var(--space-xs);
  padding-left: 0.25rem;
  line-height: 1.6;
}

/* Sanskrit blocks inside footnotes - minimal styling */
.footnote-list .sanskrit-block {
  display: block;
  padding: var(--space-sm) var(--space-md);
  background: transparent;
  border-left: 2px solid var(--color-border);
  border-radius: 0;
  margin: var(--space-sm) 0;
  font-size: 1rem;
  line-height: 1.7;
  opacity: 0.9;
}

/* Verse blocks in footnotes */
.footnote-list .sanskrit-verse {
  font-size: 0.95rem;
  padding: var(--space-xs) var(--space-sm);
}

.footnote-backref {
  color: var(--color-accent);
  text-decoration: none;
  margin-left: 0.25rem;
}

/* Sidebars */
.toc-sidebar,
#index-sidebar {
  position: fixed;
  top: 0;
  left: -360px !important;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--color-bg);
  border-right: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 200;
  display: flex;
  flex-direction: column;
}

.toc-sidebar.active,
#index-sidebar.active {
  left: 0 !important;
}

.sidebar-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 199;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    visibility 0.3s;
}

.sidebar-backdrop.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.toc-header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--color-bg-secondary);
  min-height: var(--nav-height);
}

.toc-header h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
}

.close-button {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.close-button:hover {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

.toc-content,
#index-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-md);
}

.toc-content::-webkit-scrollbar,
#index-content::-webkit-scrollbar {
  width: 8px;
}

.toc-content::-webkit-scrollbar-track,
#index-content::-webkit-scrollbar-track {
  background: var(--color-bg-secondary);
}

.toc-content::-webkit-scrollbar-thumb,
#index-content::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}

.toc-content::-webkit-scrollbar-thumb:hover,
#index-content::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent);
}

/* TOC Links */
.toc-content a {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

.toc-content a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

/* TOC Chapter Structure */
.toc-list {
  padding: 0;
}

.toc-chapter {
  border-bottom: 1px solid var(--color-border);
}

.toc-chapter.toc-appendix {
  border-top: 2px solid var(--color-accent);
}

.toc-chapter-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-lg) var(--space-md);
  transition: var(--transition);
  cursor: pointer;
}

.toc-chapter-header:hover {
  background: var(--color-bg-secondary);
}

.toc-expand-btn {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: var(--transition);
  padding: 0;
  margin-top: 2px;
}

.toc-expand-btn:hover {
  color: var(--color-accent);
}

.expand-icon {
  display: inline-block;
  font-size: 1.25rem;
  line-height: 1;
  transition: transform 0.2s ease;
}

.toc-expand-btn.expanded .expand-icon {
  transform: rotate(90deg);
}

.toc-chapter-link {
  flex: 1;
  text-decoration: none;
  color: inherit;
  display: block;
}

.toc-chapter-link:hover .toc-chapter-title {
  color: var(--color-accent);
}

.toc-chapter-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.toc-chapter-title-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.toc-chapter-number {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.toc-chapter-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  font-family: var(--font-serif);
}

.toc-chapter-range {
  font-size: 0.875rem;
  font-family: var(--font-mono);
  color: var(--color-text-secondary);
  font-weight: 500;
}

.toc-chapter-content {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
}

.toc-sections-loading {
  padding: var(--space-lg);
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.toc-sections {
  padding: var(--space-sm) 0;
}

.toc-section-link {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  padding-left: calc(var(--space-lg) + 24px + var(--space-sm));
  text-decoration: none;
  color: var(--color-text);
  transition: var(--transition);
  border-left: 3px solid transparent;
}

.toc-section-link:hover {
  background: var(--color-bg);
  border-left-color: var(--color-accent);
}

.toc-section-id {
  flex-shrink: 0;
  font-size: 0.875rem;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--color-accent);
  min-width: 48px;
}

.toc-section-title {
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--color-text-secondary);
}

.toc-section-link:hover .toc-section-title {
  color: var(--color-text);
}

[data-theme="dark"] .toc-chapter-content {
  background: rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .toc-section-link:hover {
  background: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .toc-chapter.toc-appendix {
  background: rgba(99, 102, 241, 0.05);
}

/* Word Index */
.index-search {
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-secondary);
}

.index-search input {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-family: var(--font-devanagari);
  background: var(--color-bg);
  color: var(--color-text);
  transition: var(--transition);
}

.index-search input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.search-stats {
  margin-top: var(--space-sm);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.word-list {
  padding: 0;
}

.word-entry {
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}

.word-entry:hover {
  background: var(--color-bg-secondary);
}

.word-devanagari {
  display: block;
  font-family: var(--font-devanagari);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.word-refs {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.word-refs .section-ref {
  display: inline-flex;
  padding: 0.125rem 0.375rem;
  background: rgba(99, 102, 241, 0.1);
  border-radius: var(--radius-sm);
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
  font-family: var(--font-mono);
  transition: var(--transition);
}

.word-refs .section-ref:hover {
  background: var(--color-accent);
  color: white;
}

.word-refs .more {
  font-style: italic;
  color: var(--color-text-secondary);
  margin-left: var(--space-xs);
}

/* Loading & Messages */
.loading,
.no-results,
.more-results {
  padding: var(--space-xl);
  text-align: center;
  color: var(--color-text-secondary);
  font-style: italic;
}

/* Image Viewer */
.image-viewer {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-lg));
  max-width: 500px;
  margin: 0 auto var(--space-xl);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.image-container {
  width: 100%;
  overflow: auto;
  max-height: 70vh;
}

.image-container img {
  width: 100%;
  height: auto;
  display: block;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-lg) 0;
  font-size: 0.95rem;
}

thead {
  background: var(--color-bg-secondary);
}

th,
td {
  padding: var(--space-sm) var(--space-md);
  text-align: left;
  border: 1px solid var(--color-border);
}

th {
  font-weight: 600;
  color: var(--color-text);
}

tbody tr:hover {
  background: var(--color-bg-secondary);
}

/* Script Selector */
.script-selector {
  position: relative;
}

#script-toggle {
  min-width: 50px;
}

.script-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: var(--space-xs);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: none;
  min-width: 150px;
  z-index: 1000;
}

.script-menu.active {
  display: block;
}

.script-option {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border: none;
  background: none;
  text-align: left;
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.875rem;
  color: var(--color-text);
}

.script-option:hover {
  background: var(--color-bg-secondary);
}

/* Responsive - Mobile First */
@media (max-width: 768px) {
  :root {
    --nav-height: 52px;
  }

  /* Navigation - stacked layout on mobile */
  .navigation {
    padding: 0 var(--space-sm);
    flex-wrap: wrap;
    height: auto;
    min-height: var(--nav-height);
    gap: var(--space-xs);
    padding-top: var(--space-xs);
    padding-bottom: var(--space-xs);
  }

  .nav-center {
    order: 2;
    width: 100%;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-xs) 0;
  }

  .nav-controls {
    order: 1;
    width: 100%;
    justify-content: space-between;
    gap: var(--space-xs);
  }

  .nav-button {
    width: 36px;
    height: 36px;
    font-size: 1rem;
  }

  .section-counter {
    min-width: auto;
    font-size: 0.7rem;
    max-width: 180px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .control-button {
    width: 36px;
    height: 36px;
    font-size: 0.95rem;
  }

  /* Content - more breathing room */
  .content-container {
    margin-top: 90px; /* Account for taller nav */
    padding: var(--space-md) var(--space-sm);
  }

  .chapter-header {
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
  }

  .chapter-header h1 {
    font-size: 1.5rem;
    line-height: 1.3;
  }

  .chapter-range {
    font-size: 0.875rem;
  }

  /* Sections */
  .grammar-section {
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    scroll-margin-top: 100px;
  }

  .section-header {
    margin-bottom: var(--space-md);
  }

  .section-anchor {
    top: 95px;
  }

  .section-anchor a.section-link {
    font-size: 1.1rem;
  }

  /* Typography scaling */
  .content p {
    font-size: 1rem;
    line-height: 1.7;
  }

  .content h2 {
    font-size: 1.5rem;
  }

  .content h3 {
    font-size: 1.25rem;
  }

  /* Sanskrit blocks */
  .sanskrit-block {
    padding: var(--space-md);
    font-size: 1.1rem;
    line-height: 1.8;
  }

  .sanskrit-verse {
    padding: var(--space-md);
    font-size: 1.1rem;
  }

  /* Sidebars - full width */
  .toc-sidebar,
  #index-sidebar {
    width: 100%;
    left: -100% !important;
  }

  .toc-sidebar.active,
  #index-sidebar.active {
    left: 0 !important;
  }

  .toc-header {
    padding: var(--space-md);
  }

  .toc-header h2 {
    font-size: 1.125rem;
  }

  /* TOC chapter items */
  .toc-chapter-header {
    padding: var(--space-md) var(--space-sm);
  }

  .toc-chapter-title {
    font-size: 1rem;
  }

  .toc-chapter-range {
    font-size: 0.8rem;
  }

  .toc-section-link {
    padding: var(--space-sm) var(--space-md);
    padding-left: calc(var(--space-md) + 24px);
  }

  /* Tables - horizontal scroll */
  table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
    font-size: 0.875rem;
  }

  th,
  td {
    padding: var(--space-xs) var(--space-sm);
  }

  /* Modals */
  .modal {
    padding: var(--space-sm);
  }

  .modal-content {
    max-height: 95vh;
    border-radius: var(--radius-md);
  }

  .modal-header {
    padding: var(--space-md);
  }

  .modal-header h2 {
    font-size: 1.25rem;
  }

  .modal-body {
    padding: var(--space-md);
  }

  .edit-textarea {
    min-height: 300px;
    font-size: 0.8rem;
  }

  .modal-actions {
    flex-direction: column;
  }

  .primary-button,
  .secondary-button {
    width: 100%;
    padding: var(--space-md);
  }

  /* Script menu */
  .script-menu {
    right: auto;
    left: 0;
  }

  #script-toggle {
    min-width: 44px;
  }

  /* Lightbox */
  .lightbox-image {
    max-width: 100vw;
    padding: 0 var(--space-sm);
  }

  .lightbox-nav {
    width: 44px;
    height: 44px;
    font-size: 2rem;
  }

  .lightbox-prev {
    left: 8px;
  }

  .lightbox-next {
    right: 8px;
  }

  .lightbox-close {
    top: 12px;
    right: 12px;
    width: 40px;
    height: 40px;
    font-size: 24px;
  }

  /* Floating button */
  .floating-image-btn {
    bottom: 16px;
    right: 16px;
    width: 48px;
    height: 48px;
    font-size: 20px;
  }

  /* Topics tags */
  .topics-tags {
    gap: 4px;
  }

  .topic-tag {
    font-size: 0.65rem;
    padding: 0.1rem 0.4rem;
  }

  /* Panini refs */
  .panini-ref {
    font-size: 0.8rem;
    padding: 0.1rem 0.35rem;
  }

  /* Footnotes */
  .footnote-list {
    font-size: 0.85rem;
    padding-left: 1rem;
  }

  /* Word index */
  .index-search input {
    font-size: 1rem;
    padding: var(--space-md);
  }

  .word-devanagari {
    font-size: 1.1rem;
  }

  .word-refs {
    font-size: 0.8rem;
  }
}

/* Small mobile (iPhone SE, etc) */
@media (max-width: 375px) {
  .navigation {
    padding: 0 var(--space-xs);
  }

  .section-counter {
    font-size: 0.65rem;
    max-width: 140px;
  }

  .control-button {
    width: 32px;
    height: 32px;
    font-size: 0.875rem;
  }

  .nav-button {
    width: 32px;
    height: 32px;
  }

  .chapter-header h1 {
    font-size: 1.25rem;
  }

  .content p {
    font-size: 0.95rem;
  }

  .sanskrit-block,
  .sanskrit-verse {
    font-size: 1rem;
    padding: var(--space-sm);
  }
}

/* Animations */
@keyframes highlight-section {
  0% {
    background: rgba(99, 102, 241, 0.1);
  }
  100% {
    background: transparent;
  }
}

.grammar-section:target {
  animation: highlight-section 2s ease-out;
}

/* Modals */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 300;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
}

.modal.active {
  display: flex;
}

.modal-content {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  max-width: 800px;
  max-height: 90vh;
  width: 100%;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0;
}

.modal-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-lg);
}

.modal-instructions {
  margin-bottom: var(--space-md);
  color: var(--color-text-secondary);
}

.edit-textarea {
  width: 100%;
  min-height: 400px;
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  resize: vertical;
  background: var(--color-bg-secondary);
  color: var(--color-text);
}

.modal-actions {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.primary-button,
.secondary-button {
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-md);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-size: 0.9375rem;
}

.primary-button {
  background: var(--color-accent);
  color: white;
}

.primary-button:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
}

.secondary-button {
  background: var(--color-bg-secondary);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.secondary-button:hover {
  background: var(--color-border);
}

/* Submission Success */
.submission-success {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-xl);
  gap: var(--space-md);
}

.submission-success h3 {
  font-size: 1.5rem;
  color: #059669;
  margin: 0;
}

[data-theme="dark"] .submission-success h3 {
  color: #34d399;
}

.submission-success p {
  color: var(--color-text-secondary);
  margin: 0;
}

.submission-success .pr-link {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

.submission-success .pr-link:hover {
  background: var(--color-border);
}

.submission-success .primary-button {
  margin-top: var(--space-md);
}

/* Image Lightbox */
.image-lightbox {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 300;
  overflow-y: auto;
  overflow-x: hidden;
}

.lightbox-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.9);
}

.lightbox-content {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 20px 0;
  z-index: 301;
}

.lightbox-image {
  max-width: calc(100vw - 200px);
  width: auto;
  height: auto;
  display: block;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.lightbox-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  z-index: 302;
  background: rgba(255, 255, 255, 0.9);
  border: none;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  font-size: 3rem;
  line-height: 1;
  cursor: pointer;
  color: #333;
  transition:
    background 0.2s,
    transform 0.2s;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.lightbox-nav:hover {
  background: rgba(255, 255, 255, 1);
  transform: translateY(-50%) scale(1.1);
}

.lightbox-nav:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.lightbox-prev {
  left: 20px;
}

.lightbox-next {
  right: 20px;
}

.lightbox-close {
  position: fixed;
  top: 20px;
  right: 20px;
  width: 48px;
  height: 48px;
  border: none;
  background: rgba(255, 255, 255, 0.9);
  color: #333;
  font-size: 32px;
  border-radius: 50%;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 302;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 1);
  transform: scale(1.1);
}

/* Floating Image Button */
.floating-image-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: none;
  background: var(--color-accent);
  color: white;
  font-size: 24px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  cursor: pointer;
  transition: var(--transition);
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: center;
}

.floating-image-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

/* Schema v2.0 Enhancements */

/* Section Header with Title - Minimal Design */
.section-header {
  margin-bottom: var(--space-lg);
}

.section-anchor a.section-link {
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--color-text);
  text-decoration: none;
  transition: color 0.2s ease;
  display: block;
  line-height: 1.4;
}

.section-anchor a.section-link:hover {
  color: var(--color-accent);
}

/* Topic Tags - Minimal Design */
.topics-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-sm);
}

.topic-tag {
  display: inline-block;
  padding: 0.125rem 0.5rem;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--color-text-secondary);
  transition: border-color 0.2s ease;
  cursor: default;
  text-transform: lowercase;
}

.topic-tag:hover {
  border-color: var(--color-accent);
}

/* Cross-reference Links - Minimal */
a.ref-link {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: inherit;
  border-bottom: 1px solid var(--color-border);
  transition: border-color 0.2s ease;
}

a.ref-link:hover {
  border-bottom-color: var(--color-accent);
}

/* P\u0101\u1e47ini Reference Inline */
.panini-ref-inline {
  color: var(--color-text-secondary);
  font-style: italic;
  font-size: 0.9em;
}

/* External References */
.external-ref {
  color: var(--color-text-secondary);
  font-style: italic;
}

/* Dark mode adjustments */
[data-theme="dark"] .topic-tag {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text-secondary);
}

[data-theme="dark"] .topic-tag:hover {
  border-color: var(--color-accent);
}

/* Updated Markup Support - Schema v2.0 */

/* Dhātu (Verb Root) References */
.dhatu-ref {
  color: var(--color-accent);
  font-weight: 500;
  cursor: help;
}

/* Example Styling - Minimal */
.example {
  display: inline-block;
  padding: 0.125rem 0.5rem;
  background: var(--color-bg-secondary);
  border-left: 2px solid var(--color-accent);
  margin: 0.25rem 0;
  font-size: 0.95em;
}

.example.grammatical {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

[data-theme="dark"] .example {
  background: rgba(99, 102, 241, 0.05);
}

/* Note Types - Minimal Design */
.note {
  padding: var(--space-sm);
  margin: var(--space-md) 0;
  border-left: 2px solid var(--color-border);
  background: transparent;
  font-size: 0.95em;
  line-height: 1.6;
}

.note-observation {
  border-left-color: var(--color-accent);
}

.note-exception {
  border-left-color: #ef4444;
}

.note-beginner {
  border-left-color: #10b981;
  opacity: 0.85;
}

.note.nota-bene {
  border-left-color: var(--color-accent);
  font-weight: 500;
}