/**
 * Syllabus viewer — one page for every exam.
 * Low-scroll UX: accordion sections, sticky TOC, contained tables, mobile table cards.
 * Print-friendly; no content omitted.
 */

/* ----- Layout (reduced vertical footprint) ----- */
.syllabus-viewer-main,
.upsc-mains-main {
  padding-bottom: 2rem;
  padding-top: var(--app-space-sm);
}

.syllabus-viewer-inner,
.upsc-mains-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 var(--app-space-md);
}

.syllabus-viewer-content,
.upsc-mains-page-content {
  min-height: 40vh;
}

.upsc-mains-loading,
.upsc-mains-error {
  position: relative;
  z-index: 10;
}
.upsc-mains-loading {
  padding: 3rem 1rem;
  text-align: center;
  color: var(--app-text-secondary);
  font-size: var(--app-text-sm);
}

.upsc-mains-error {
  padding: 2rem;
  background: var(--app-surface);
  border: 1px solid var(--app-border-soft);
  border-radius: var(--app-radius-lg);
  color: var(--app-text-secondary);
  font-size: var(--app-text-sm);
}

.upsc-mains-error code {
  background: var(--app-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}

.upsc-mains-error a {
  color: var(--app-primary);
  font-weight: 600;
}

.syllabus-viewer-error-hint {
  margin-top: 12px;
  font-size: 0.8125rem;
  color: var(--app-text-muted);
  line-height: 1.5;
}

.syllabus-viewer-error-hint code {
  background: var(--app-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85em;
}

/* How to use this syllabus — simple note (class 6 friendly), aesthetic card */
.syllabus-how-to-use-note {
  margin-bottom: var(--app-space-lg);
}
.syllabus-how-to-use-details {
  list-style: none;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(99, 102, 241, 0.08), 0 1px 3px rgba(0, 0, 0, 0.06);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 252, 0.98) 100%);
  border: 1px solid rgba(99, 102, 241, 0.12);
}
.syllabus-how-to-use-summary {
  padding: 16px 20px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  list-style: none;
  color: var(--app-text);
  display: flex;
  align-items: center;
  gap: 12px;
  transition: background 0.2s ease;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.06) 0%, rgba(139, 92, 246, 0.04) 100%);
}
.syllabus-how-to-use-summary:hover {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.06) 100%);
}
.syllabus-how-to-use-summary::-webkit-details-marker {
  display: none;
}
.syllabus-how-to-use-summary::after {
  content: '▶';
  margin-left: auto;
  font-size: 0.75rem;
  opacity: 0.6;
  transition: transform 0.2s ease;
}
.syllabus-how-to-use-details[open] .syllabus-how-to-use-summary::after {
  content: '▼';
  transform: rotate(0deg);
}
.syllabus-how-to-use-body {
  padding: 8px 20px 24px 20px;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--app-text-secondary);
}
.syllabus-how-to-use-body p {
  margin: 0 0 14px;
}
.syllabus-how-to-use-body p:last-child {
  margin-bottom: 0;
  font-style: italic;
  color: var(--app-text);
  opacity: 0.95;
}
.syllabus-how-to-use-body strong {
  color: var(--app-text);
  font-weight: 700;
}

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

.app-header-btn-link {
  font-size: var(--app-text-sm);
  font-weight: 600;
  color: var(--app-primary);
  text-decoration: none;
  padding: 8px 12px;
  border-radius: var(--app-radius-sm);
  -webkit-tap-highlight-color: transparent;
  transition: background 0.15s, color 0.15s;
}

.app-header-btn-link:hover {
  background: var(--app-primary-soft);
  color: var(--app-primary-hover);
}

.upsc-mains-print-btn {
  padding: 8px 14px;
  font-size: var(--app-text-sm);
  font-weight: 600;
  background: var(--app-primary);
  color: #fff;
  border: none;
  border-radius: var(--app-radius-sm);
  cursor: pointer;
  transition: background 0.15s;
}

.upsc-mains-print-btn:hover {
  background: var(--app-primary-hover);
}

/* Intro: entire block (title + note + exam structure) in one card — matches How to use */
.syllabus-viewer-intro {
  margin-bottom: var(--app-space-lg);
}
.syllabus-viewer-intro-card {
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(99, 102, 241, 0.08), 0 1px 3px rgba(0, 0, 0, 0.06);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 252, 0.98) 100%);
  border: 1px solid rgba(99, 102, 241, 0.12);
  padding: 24px 22px;
  text-align: justify;
}
.syllabus-viewer-intro-card h1,
.syllabus-viewer-intro-card .md-h1 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--app-text);
  margin: 0 0 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid rgba(99, 102, 241, 0.2);
  letter-spacing: -0.02em;
  line-height: 1.3;
  text-align: left;
}
.syllabus-viewer-intro-card p {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--app-text-secondary);
  margin: 0 0 1rem;
  text-align: justify;
}
.syllabus-viewer-intro-card p:last-child {
  margin-bottom: 0;
}
.syllabus-viewer-intro-card p strong {
  color: var(--app-text);
  font-weight: 700;
}
.syllabus-viewer-intro-card ul,
.syllabus-viewer-intro-card ol {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--app-text-secondary);
  text-align: justify;
}
.syllabus-viewer-intro-card li {
  margin-bottom: 0.35rem;
}
.syllabus-viewer-exam-info {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  padding: 0;
  margin: 0 0 1rem;
  background: transparent;
  border: none;
  border-radius: 0;
  box-shadow: none;
  font-size: var(--app-text-sm);
  line-height: 1.45;
  color: var(--app-text-secondary);
}
.syllabus-viewer-intro-card .syllabus-viewer-exam-info:last-child {
  margin-bottom: 0;
}
.syllabus-viewer-exam-chip {
  display: inline-block;
  padding: 6px 12px;
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.15);
  border-radius: var(--app-radius-md);
  color: var(--app-text);
  font-weight: 500;
  white-space: normal;
  word-break: break-word;
}
.syllabus-viewer-exam-chip strong {
  font-weight: 700;
  color: var(--app-text);
}

/* Rendered MD body — full width for tables, readable typography */
.upsc-mains-md-body {
  color: var(--app-text);
  font-family: var(--app-font);
  line-height: 1.6;
  word-wrap: break-word;
}

.upsc-mains-md-body > *:first-child {
  margin-top: 0;
}

.upsc-mains-md-body > *:last-child {
  margin-bottom: 0;
}

/* Headings — so every section from PDF is clear */
.upsc-mains-md-body h1,
.upsc-mains-md-body .md-h1 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--app-text);
  margin: 0 0 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--app-border-soft);
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.upsc-mains-md-body h2,
.upsc-mains-md-body .md-h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--app-text);
  margin: 2.5rem 0 1rem;
  padding: 10px 14px 10px 12px;
  border-left: 4px solid var(--app-primary);
  background: var(--app-primary-soft);
  border-radius: 0 var(--app-radius-sm) var(--app-radius-sm) 0;
  letter-spacing: -0.01em;
}

.upsc-mains-md-body h2:first-child,
.upsc-mains-md-body h2:first-of-type {
  margin-top: 0;
}

.upsc-mains-md-body h3,
.upsc-mains-md-body .md-h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--app-text);
  margin: 1.75rem 0 0.5rem;
}

.upsc-mains-md-body h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--app-text);
  margin: 1.25rem 0 0.4rem;
}

.upsc-mains-md-body h5,
.upsc-mains-md-body h6 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--app-text-secondary);
  margin: 1rem 0 0.35rem;
}

/* Paragraphs and text */
.upsc-mains-md-body p {
  margin: 0 0 0.85em;
  font-size: 0.9375rem;
  color: var(--app-text-secondary);
  max-width: 72ch;
}

.upsc-mains-md-body strong {
  font-weight: 700;
  color: var(--app-text);
}

.upsc-mains-md-body em {
  font-style: italic;
  color: var(--app-text-secondary);
}

/* Lists — every bullet from PDF visible */
.upsc-mains-md-body ul,
.upsc-mains-md-body ol {
  margin: 0 0 1em;
  padding-left: 1.5em;
  max-width: 72ch;
}

.upsc-mains-md-body li {
  margin: 0.35em 0;
  font-size: 0.9375rem;
  color: var(--app-text-secondary);
}

.upsc-mains-md-body li p {
  margin: 0;
}

/* Tables — every sheet table from PDF; horizontal scroll so nothing is clipped */
.upsc-mains-md-body table {
  width: 100%;
  min-width: 600px;
  border-collapse: collapse;
  font-size: 0.8125rem;
  margin: 1.25em 0;
  background: var(--app-surface);
  border: 1px solid var(--app-border-soft);
  border-radius: var(--app-radius-md);
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.upsc-mains-md-body thead {
  background: var(--app-gradient-soft);
  border-bottom: 2px solid var(--app-border-soft);
}

.upsc-mains-md-body th {
  text-align: left;
  padding: 10px 12px;
  font-weight: 700;
  color: var(--app-text);
  white-space: nowrap;
  border-bottom: 1px solid var(--app-border-soft);
}

.upsc-mains-md-body td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--app-border-soft);
  color: var(--app-text-secondary);
  vertical-align: top;
}

.upsc-mains-md-body tbody tr:hover {
  background: rgba(99, 102, 241, 0.04);
}

.upsc-mains-md-body tbody tr:last-child td {
  border-bottom: none;
}

/* Wrapper for wide tables — horizontal scroll so every column is visible */
.upsc-mains-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 1.25em 0;
  border: 1px solid var(--app-border-soft);
  border-radius: var(--app-radius-md);
  background: var(--app-surface);
}

.upsc-mains-table-wrap table {
  margin: 0;
  min-width: 100%;
}

/* Sheet sections (when using manifest — one section per PDF sheet) */
.upsc-mains-sheet {
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--app-border-soft);
}

.upsc-mains-sheet:last-child {
  border-bottom: none;
}

.upsc-mains-sheet-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--app-primary);
  margin: 0 0 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--app-primary);
}

/* Horizontal rule */
.upsc-mains-md-body hr {
  border: none;
  height: 1px;
  background: var(--app-border-soft);
  margin: 1.5em 0;
}

/* Links */
.upsc-mains-md-body a {
  color: var(--app-primary);
  text-decoration: none;
  font-weight: 600;
}

.upsc-mains-md-body a:hover {
  text-decoration: underline;
}

/* Blockquote if any */
.upsc-mains-md-body blockquote {
  margin: 1em 0;
  padding: 0.5em 1em;
  border-left: 4px solid var(--app-primary);
  background: var(--app-primary-soft);
  border-radius: 0 var(--app-radius-sm) var(--app-radius-sm) 0;
  color: var(--app-text-secondary);
  font-size: 0.9375rem;
}

/* Code */
.upsc-mains-md-body code {
  font-size: 0.875em;
  background: var(--app-bg);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--app-text);
}

.upsc-mains-md-body pre {
  overflow-x: auto;
  padding: 1rem;
  background: var(--app-bg);
  border-radius: var(--app-radius-sm);
  font-size: 0.8125rem;
  margin: 1em 0;
  border: 1px solid var(--app-border-soft);
}

.upsc-mains-md-body pre code {
  background: none;
  padding: 0;
}

/* ----- Surprise me (elite top CTA) ----- */
.syllabus-surprise {
  margin-bottom: var(--app-space-md);
}

.syllabus-surprise-inner {
  position: relative;
  background: linear-gradient(160deg, rgba(99, 102, 241, 0.06) 0%, rgba(139, 92, 246, 0.04) 50%, rgba(99, 102, 241, 0.08) 100%);
  border: 1px solid rgba(99, 102, 241, 0.14);
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 2px 12px rgba(99, 102, 241, 0.06), 0 1px 0 rgba(255, 255, 255, 0.6) inset;
  overflow: hidden;
}

.syllabus-surprise-inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--app-primary), rgba(139, 92, 246, 0.8));
  border-radius: 16px 16px 0 0;
}

.syllabus-surprise-hint {
  margin: 0 0 14px;
  font-size: 0.8125rem;
  color: var(--app-text-secondary);
  line-height: 1.45;
  letter-spacing: 0.01em;
}

.syllabus-surprise-btn {
  position: relative;
  width: 100%;
  padding: 16px 24px;
  font-size: 1.0625rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, #6366f1 0%, #7c3aed 50%, #8b5cf6 100%);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: transform var(--app-duration-fast), box-shadow var(--app-duration-fast), filter var(--app-duration-fast);
  box-shadow: 0 4px 16px -2px rgba(99, 102, 241, 0.4), 0 1px 0 rgba(255, 255, 255, 0.2) inset;
  letter-spacing: 0.02em;
}

.syllabus-surprise-btn::before {
  content: '✨';
  margin-right: 8px;
  font-style: normal;
}

.syllabus-surprise-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px -4px rgba(99, 102, 241, 0.5), 0 1px 0 rgba(255, 255, 255, 0.25) inset;
  filter: brightness(1.03);
}

.syllabus-surprise-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 10px -2px rgba(99, 102, 241, 0.35);
}

.syllabus-surprise-card {
  margin-top: var(--app-space-md);
  padding-top: var(--app-space-md);
  border-top: 1px solid rgba(99, 102, 241, 0.12);
}

.syllabus-surprise-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  margin: 0 0 6px;
  font-size: 0.8125rem;
  color: var(--app-primary);
  font-weight: 600;
}

.syllabus-surprise-paper {
  display: inline-block;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 700;
  color: #fff;
  background: var(--app-primary);
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.syllabus-surprise-subject:not(:empty)::after {
  content: '';
}

.syllabus-surprise-unit {
  color: var(--app-text-secondary);
  font-weight: 500;
}

.syllabus-surprise-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--app-text);
  margin: 0 0 6px;
  line-height: 1.4;
}

.syllabus-surprise-stats {
  font-size: 0.8125rem;
  color: var(--app-text-secondary);
  margin: 0 0 var(--app-space-sm);
  line-height: 1.4;
}

.syllabus-surprise-done {
  display: flex;
  align-items: center;
  gap: var(--app-space-sm);
  flex-wrap: wrap;
}

.syllabus-surprise-done-badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--app-success);
  background: var(--app-success-soft);
  border-radius: var(--app-radius-full);
}

.syllabus-surprise-undone {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--app-primary);
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px 0;
  -webkit-tap-highlight-color: transparent;
}

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

.syllabus-surprise-letme {
  padding: 10px 18px;
  font-size: 0.9375rem;
  font-weight: 700;
  color: #fff;
  background: var(--app-primary);
  border: none;
  border-radius: var(--app-radius-md);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: background var(--app-duration-fast);
}

.syllabus-surprise-letme:hover {
  background: var(--app-primary-hover);
}

.syllabus-surprise-mock {
  padding: 10px 18px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--app-primary);
  background: var(--app-primary-soft);
  border-radius: var(--app-radius-md);
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
  transition: background var(--app-duration-fast);
}

.syllabus-surprise-mock:hover {
  background: rgba(99, 102, 241, 0.22);
}

.syllabus-surprise-notes {
  padding: 10px 18px;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--app-radius-md);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: opacity var(--app-duration-fast);
}

.syllabus-surprise-notes:not(.disabled) {
  color: var(--app-primary);
  background: var(--app-primary-soft);
  border: none;
}

.syllabus-surprise-notes.disabled {
  color: var(--app-text-muted);
  background: var(--app-border-soft);
  border: none;
  cursor: not-allowed;
  opacity: 0.8;
}

.syllabus-surprise-markdone {
  padding: 8px 14px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--app-success);
  background: var(--app-success-soft);
  border: none;
  border-radius: var(--app-radius-sm);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  margin-left: auto;
}

.syllabus-surprise-markdone:hover {
  background: rgba(16, 185, 129, 0.22);
}

/* Let me see: highlight sub-topic and its table row */
.syllabus-surprise-highlight {
  background: rgba(99, 102, 241, 0.25) !important;
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.5);
}
.syllabus-surprise-row-highlight {
  background: rgba(99, 102, 241, 0.12) !important;
}
.syllabus-surprise-row-highlight .syllabus-surprise-highlight {
  background: rgba(99, 102, 241, 0.28) !important;
}

/* ----- TOC trigger (mobile): single button, no bar ----- */
.syllabus-toc-trigger {
  display: none;
  width: 100%;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 16px;
  margin-bottom: var(--app-space-sm);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--app-primary);
  background: var(--app-primary-soft);
  border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: var(--app-radius-md);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: background var(--app-duration-fast);
}

.syllabus-toc-trigger:hover {
  background: rgba(99, 102, 241, 0.22);
}

.syllabus-toc-trigger-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 24px;
  padding: 0 6px;
  font-size: 0.8125rem;
  color: var(--app-surface);
  background: var(--app-primary);
  border-radius: var(--app-radius-full);
}

/* ----- Bottom sheet (mobile TOC) — no more stuck bar ----- */
.syllabus-toc-sheet-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--app-duration), visibility var(--app-duration);
}

.syllabus-toc-sheet-overlay.open {
  opacity: 1;
  visibility: visible;
}

.syllabus-toc-sheet {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 101;
  max-height: 75vh;
  background: var(--app-surface);
  border-radius: var(--app-radius-lg) var(--app-radius-lg) 0 0;
  box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.12);
  transform: translateY(100%);
  transition: transform var(--app-duration) var(--app-ease-out);
  display: flex;
  flex-direction: column;
  padding-bottom: env(safe-area-inset-bottom, 0);
}

.syllabus-toc-sheet.open {
  transform: translateY(0);
}

.syllabus-toc-sheet-inner {
  padding: var(--app-space-md);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  align-content: flex-start;
}

.syllabus-toc-sheet-close {
  flex: 0 0 100%;
  margin-bottom: 4px;
  padding: 10px 0;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--app-text-secondary);
  background: none;
  border: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.syllabus-toc-sheet .syllabus-viewer-toc-list {
  flex: 0 0 100%;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}

.syllabus-toc-sheet .syllabus-viewer-toc-expand,
.syllabus-toc-sheet .syllabus-viewer-toc-collapse {
  flex-shrink: 0;
}

/* Mobile: hide desktop TOC bar, show trigger + sheet */
@media (max-width: 768px) {
  .syllabus-viewer-toc-desktop {
    display: none !important;
  }

  .syllabus-toc-trigger {
    display: flex;
  }
}

/* Desktop: hide trigger (sheet still works if we want) */
@media (min-width: 769px) {
  .syllabus-toc-trigger {
    display: none;
  }
}

/* ----- Sticky TOC (desktop only) ----- */
.syllabus-viewer-toc {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--app-surface);
  border-bottom: 1px solid var(--app-border-soft);
  margin: 0 calc(-1 * var(--app-space-md)) var(--app-space-md);
  padding: var(--app-space-sm) var(--app-space-md);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  border-radius: 0 0 var(--app-radius-md) var(--app-radius-md);
}

.syllabus-viewer-toc-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--app-space-sm);
}

.syllabus-viewer-toc-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  max-width: 100%;
}

.syllabus-viewer-toc-list::-webkit-scrollbar {
  display: none;
}

.syllabus-viewer-toc-link {
  flex-shrink: 0;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--app-primary);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: var(--app-radius-sm);
  background: var(--app-primary-soft);
  white-space: nowrap;
  transition: background var(--app-duration-fast), color var(--app-duration-fast);
}

.syllabus-viewer-toc-link:hover {
  background: rgba(99, 102, 241, 0.22);
  color: var(--app-primary-hover);
}

.syllabus-viewer-toc-expand,
.syllabus-viewer-toc-collapse {
  flex-shrink: 0;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--app-text-secondary);
  background: var(--app-bg);
  border: 1px solid var(--app-border-soft);
  padding: 5px 10px;
  border-radius: var(--app-radius-sm);
  cursor: pointer;
  transition: background var(--app-duration-fast), color var(--app-duration-fast);
}

.syllabus-viewer-toc-expand:hover,
.syllabus-viewer-toc-collapse:hover {
  background: var(--app-border-soft);
  color: var(--app-text);
}

/* ----- Accordion (one section open = less vertical scroll) ----- */
.syllabus-viewer-accordion {
  border: 1px solid var(--app-border-soft);
  border-radius: var(--app-radius-md);
  margin-bottom: var(--app-space-sm);
  overflow: hidden;
  background: var(--app-surface);
}

.syllabus-viewer-accordion-summary {
  padding: var(--app-space-sm) var(--app-space-md);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--app-text);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--app-gradient-soft);
  transition: background var(--app-duration-fast);
  -webkit-tap-highlight-color: transparent;
}

.syllabus-viewer-accordion-summary::-webkit-details-marker {
  display: none;
}

.syllabus-viewer-accordion-summary::after {
  content: '';
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--app-primary);
  border-bottom: 2px solid var(--app-primary);
  transform: rotate(45deg);
  margin-left: 8px;
  flex-shrink: 0;
  transition: transform var(--app-duration);
}

.syllabus-viewer-accordion[open] .syllabus-viewer-accordion-summary::after {
  transform: rotate(-135deg);
}

.syllabus-viewer-accordion-summary:hover {
  background: rgba(99, 102, 241, 0.18);
}

.syllabus-viewer-accordion-body {
  padding: var(--app-space-md);
  border-top: 1px solid var(--app-border-soft);
}

.syllabus-viewer-accordion-body .upsc-mains-md-body {
  padding: 0;
}

.syllabus-viewer-accordion-body > *:first-child {
  margin-top: 0;
}

.syllabus-viewer-accordion-body > *:last-child {
  margin-bottom: 0;
}

.syllabus-viewer-intro {
  margin-bottom: var(--app-space-md);
}

.syllabus-viewer-intro > *:first-child {
  margin-top: 0;
}

/* ----- Table: vertical + horizontal containment (no page stretch) ----- */
.syllabus-table-outer {
  margin: var(--app-space-sm) 0;
  border: 1px solid var(--app-border-soft);
  border-radius: var(--app-radius-md);
  background: var(--app-surface);
  overflow: hidden;
  max-height: min(50vh, 420px);
  display: flex;
  flex-direction: column;
}

.syllabus-table-outer .upsc-mains-table-wrap {
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  flex: 1;
  min-height: 0;
  margin: 0;
}

.syllabus-table-outer .upsc-mains-table-wrap table {
  margin: 0;
}

/* ----- Mobile: table with horizontal scroll, first column sticky ----- */
@media (max-width: 768px) {
  .syllabus-table-outer {
    max-height: min(60vh, 400px);
    overflow: hidden;
  }

  .syllabus-table-outer .upsc-mains-table-wrap {
    overflow-x: auto;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    /* Ensure sticky respects this as scroll container */
    overflow-scrolling: touch;
  }

  .syllabus-table-outer table {
    min-width: 480px;
    /* separate + border-spacing so sticky works in overflow scroll (Safari/iOS) */
    border-collapse: separate;
    border-spacing: 0;
  }

  /* Sticky first column: stays on the left when scrolling horizontally */
  .syllabus-table-outer thead th:first-child,
  .syllabus-table-outer tbody td:first-child {
    position: sticky;
    left: 0;
    z-index: 1;
    background: #fff;
    background: var(--app-surface);
    box-shadow: 4px 0 8px -2px rgba(0, 0, 0, 0.08);
    /* Stacking context so column stays above scrolling content */
    isolation: isolate;
  }

  .syllabus-table-outer thead th:first-child {
    z-index: 2;
    background: #f4f5fa;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(139, 92, 246, 0.05) 100%);
  }

  .syllabus-table-outer th:first-child,
  .syllabus-table-outer td:first-child {
    min-width: 90px;
  }

  .syllabus-table-outer th:first-child {
    white-space: normal;
  }
}

/* ----- Back to top (reduces scroll-back effort) ----- */
.syllabus-viewer-back-top {
  position: fixed;
  bottom: calc(var(--app-tabbar-height, 64px) + var(--app-space-md) + var(--app-safe-bottom, 0));
  right: var(--app-space-md);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--app-primary);
  color: #fff;
  border: none;
  font-size: 1.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--app-shadow-lg);
  z-index: 20;
  transition: transform var(--app-duration-fast), opacity var(--app-duration-fast);
  -webkit-tap-highlight-color: transparent;
}

.syllabus-viewer-back-top:hover {
  transform: scale(1.05);
}

.syllabus-viewer-back-top:active {
  transform: scale(0.98);
}

/* ----- Tighter spacing in viewer (less vertical bloat) ----- */
.syllabus-viewer-main .upsc-mains-md-body h2,
.syllabus-viewer-main .upsc-mains-md-body .md-h2 {
  margin: 1.25rem 0 0.6rem;
}

.syllabus-viewer-main .upsc-mains-md-body h3,
.syllabus-viewer-main .upsc-mains-md-body .md-h3 {
  margin: 1rem 0 0.4rem;
}

.syllabus-viewer-main .upsc-mains-md-body p {
  margin: 0 0 0.5em;
}

.syllabus-viewer-main .upsc-mains-md-body ul,
.syllabus-viewer-main .upsc-mains-md-body ol {
  margin: 0 0 0.6em;
}

/* Print: show everything, no clipping; accordions expanded */
@media print {
  .app-header-actions,
  .upsc-mains-print-btn,
  .app-header-btn-link,
  .syllabus-viewer-back-top,
  .syllabus-viewer-toc-expand,
  .syllabus-viewer-toc-collapse,
  .syllabus-toc-trigger,
  .syllabus-toc-sheet-overlay,
  .syllabus-toc-sheet,
  .syllabus-surprise,
  .upsc-mains-print-btn {
    display: none !important;
  }

  .syllabus-viewer-toc {
    position: static;
    border: none;
    box-shadow: none;
    margin-bottom: 0.5rem;
  }

  .syllabus-viewer-accordion {
    break-inside: avoid;
    page-break-inside: avoid;
  }

  .syllabus-viewer-accordion .syllabus-viewer-accordion-body {
    display: block !important;
  }

  .syllabus-viewer-accordion-summary {
    border-bottom: 1px solid var(--app-border);
  }

  .syllabus-viewer-accordion-summary::after {
    display: none;
  }

  .upsc-mains-main,
  .syllabus-viewer-main {
    padding: 0;
  }

  .upsc-mains-md-body table {
    min-width: 100%;
    font-size: 9pt;
  }

  .syllabus-table-outer {
    max-height: none;
    overflow: visible;
  }

  .upsc-mains-table-wrap {
    overflow: visible;
  }

  .upsc-mains-md-body {
    print-color-adjust: exact;
    -webkit-print-color-adjust: exact;
  }

  .upsc-mains-sheet {
    break-inside: avoid;
    page-break-inside: avoid;
  }

  .upsc-mains-md-body h2,
  .upsc-mains-md-body h3 {
    break-after: avoid;
    page-break-after: avoid;
  }
}