/* ============================================
   CHAPTER PAGE STYLES
   Shared across all 8 guide chapters
   ============================================ */

/* Chapter hero */
.chapter-page-hero {
  padding-block: clamp(var(--space-12), 8vw, var(--space-20));
  background: linear-gradient(160deg, var(--color-accent-light) 0%, var(--color-bg) 60%);
  border-bottom: 1px solid var(--color-divider);
}
.chapter-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}
.chapter-breadcrumb a {
  color: var(--color-primary);
  text-decoration: none;
}
.chapter-breadcrumb a:hover { text-decoration: underline; }
.chapter-breadcrumb span { color: var(--color-text-faint); }
.chapter-number-display {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.chapter-page-title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-plum);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-5);
}
.chapter-page-intro {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.75;
  max-width: 60ch;
  margin-bottom: var(--space-6);
}
.chapter-meta {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  flex-wrap: wrap;
}
.chapter-meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.chapter-meta-item svg { color: var(--color-primary); flex-shrink: 0; }

/* Content layout */
.chapter-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--space-12);
  align-items: start;
  padding-block: clamp(var(--space-10), 6vw, var(--space-20));
}
@media (max-width: 900px) {
  .chapter-layout { grid-template-columns: 1fr; }
  .chapter-sidebar { order: -1; }
}

/* Sidebar */
.chapter-sidebar {
  position: sticky;
  top: 5rem;
}
.sidebar-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  margin-bottom: var(--space-5);
}
.sidebar-box__title {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}
.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.toc-list a {
  text-decoration: none;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  display: block;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  line-height: 1.4;
  transition: background var(--transition), color var(--transition);
}
.toc-list a:hover,
.toc-list a.active {
  color: var(--color-primary);
  background: var(--color-primary-highlight);
}
.sidebar-cta {
  background: linear-gradient(135deg, var(--color-primary-highlight), var(--color-accent-light));
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  text-align: center;
}
.sidebar-cta__title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-plum);
  margin-bottom: var(--space-2);
}
.sidebar-cta__text {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: var(--space-4);
}
.sidebar-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.sidebar-nav-list a {
  text-decoration: none;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-2);
  border-radius: var(--radius-sm);
}
.sidebar-nav-list a:hover { color: var(--color-primary); background: var(--color-primary-highlight); }
.sidebar-nav-list a.current { color: var(--color-primary); font-weight: 600; }
.sidebar-nav-list a .ch-num {
  font-weight: 700;
  color: var(--color-primary);
  min-width: 20px;
  font-size: 11px;
}
.sidebar-nav-list a .lock {
  margin-left: auto;
  color: var(--color-text-faint);
}

/* Main article */
.chapter-article {
  min-width: 0;
}

/* Prose styles */
.prose h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-plum);
  margin-top: clamp(var(--space-10), 5vw, var(--space-16));
  margin-bottom: var(--space-4);
  line-height: 1.2;
  scroll-margin-top: 5rem;
}
.prose h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
  line-height: 1.3;
  scroll-margin-top: 5rem;
}
.prose p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-5);
  max-width: 72ch;
}
.prose ul, .prose ol {
  margin-bottom: var(--space-5);
  padding-left: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.prose li {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 68ch;
}
.prose ul li { list-style: disc; }
.prose ol li { list-style: decimal; }
.prose strong { color: var(--color-text); font-weight: 600; }
.prose a { color: var(--color-primary); }
.prose a:hover { text-decoration: underline; }

/* Pull quote */
.pull-quote {
  border-left: 3px solid var(--color-primary);
  padding: var(--space-4) var(--space-6);
  margin-block: var(--space-8);
  background: var(--color-primary-highlight);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}
.pull-quote p {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-lg);
  color: var(--color-plum);
  line-height: 1.5;
  margin: 0;
  max-width: 58ch;
}

/* Key points box */
.key-points {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin-block: var(--space-8);
}
.key-points__title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-plum);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.key-points__title svg { color: var(--color-primary); }
.key-points ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.key-points li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: none;
}
.key-points li::before {
  content: '';
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-secondary-highlight);
  flex-shrink: 0;
  margin-top: 1px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 12 12'%3E%3Cpath d='M2 6l3 3 5-5' stroke='%235a7a64' stroke-width='2' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-position: center;
  background-repeat: no-repeat;
  background-size: 10px;
  border: 2px solid var(--color-secondary-highlight);
}

/* Warning/note box */
.callout {
  border-radius: var(--radius-xl);
  padding: var(--space-5) var(--space-6);
  margin-block: var(--space-6);
  display: flex;
  gap: var(--space-4);
}
.callout--note {
  background: var(--color-secondary-highlight);
  border: 1px solid var(--color-secondary);
}
.callout--warning {
  background: #fef9ec;
  border: 1px solid #e8c84a;
}
.callout--important {
  background: var(--color-primary-highlight);
  border: 1px solid var(--color-primary);
}
[data-theme='dark'] .callout--warning {
  background: #2a2310;
  border-color: #7a6a10;
}
.callout__icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: flex-start;
  padding-top: 2px;
}
.callout__icon svg { color: var(--color-primary); }
.callout--note .callout__icon svg { color: var(--color-secondary); }
.callout--warning .callout__icon svg { color: #b88a00; }
.callout__body { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.65; }
.callout__body strong { display: block; color: var(--color-text); margin-bottom: var(--space-1); }

/* Data table */
.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-block: var(--space-6);
  font-size: var(--text-sm);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.data-table th {
  background: var(--color-surface-offset);
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-weight: 600;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}
.data-table td {
  padding: var(--space-3) var(--space-4);
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-divider);
  vertical-align: top;
  line-height: 1.6;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:nth-child(even) td { background: var(--color-surface); }

/* Video placement block */
.chapter-video {
  background: linear-gradient(135deg, var(--color-accent-light), var(--color-primary-highlight));
  border: 2px dashed var(--color-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin-block: var(--space-10);
  display: flex;
  align-items: center;
  gap: var(--space-5);
}
.chapter-video__play {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
  box-shadow: 0 6px 20px oklch(from var(--color-primary) l c h / 0.35);
}
.chapter-video__text strong {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: var(--space-1);
}
.chapter-video__text span {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
}
@media (max-width: 500px) {
  .chapter-video { flex-direction: column; }
}

/* Section divider */
.prose-divider {
  border: none;
  border-top: 1px solid var(--color-divider);
  margin-block: var(--space-10);
}

/* Symptom / treatment cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
  margin-block: var(--space-6);
}
.info-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
}
.info-card__label {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}
.info-card__value {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}
.info-card__desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* Chapter navigation footer */
.chapter-nav-footer {
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-8);
  margin-top: var(--space-12);
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.chapter-nav-btn {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  padding: var(--space-4) var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  transition: box-shadow var(--transition), border-color var(--transition);
  max-width: 260px;
}
.chapter-nav-btn:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}
.chapter-nav-btn--next { margin-left: auto; text-align: right; }
.chapter-nav-btn__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  display: block;
  margin-bottom: 2px;
}
.chapter-nav-btn__title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  display: block;
}

/* Supplement / protocol table accent */
.protocol-row { background: var(--color-accent-light); }
[data-theme='dark'] .protocol-row { background: var(--color-accent-light); }

/* Lock overlay for paywalled content */
.paywall-gate {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  margin-top: var(--space-8);
}
.paywall-gate__blur {
  filter: blur(6px);
  pointer-events: none;
  user-select: none;
  opacity: 0.5;
  max-height: 200px;
  overflow: hidden;
}
.paywall-gate__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to bottom, transparent 0%, var(--color-bg) 40%);
  padding: var(--space-8);
  text-align: center;
  gap: var(--space-4);
}
.paywall-gate__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-plum);
}
.paywall-gate__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 40ch;
  line-height: 1.6;
}

/* Compass Fund note in sidebar */
.sidebar-fund-note {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.02em;
  margin-top: var(--space-3);
  opacity: 0.85;
}