/**
 * Chapter Landing Page - Drupal Docs Style
 * Two-column layout with sidebar navigation
 */

/* Scope to /chapter page only */
.path-node.page-node-type-page .region--content-below {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 3rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* Main content area (left column) */
.path-node.page-node-type-page .region--content-below .block:nth-child(1),
.path-node.page-node-type-page .region--content-below .block:nth-child(2),
.path-node.page-node-type-page .region--content-below .block:nth-child(3) {
  grid-column: 1;
}

/* Sidebar (right column) - 4th block */
.path-node.page-node-type-page .region--content-below .block:nth-child(4) {
  grid-column: 2;
  grid-row: 1 / span 4;
  position: sticky;
  top: 2rem;
  align-self: start;
}

/* Chapter block styling */
.path-node.page-node-type-page .region--content-below .block {
  margin-bottom: 0;
  background: transparent;
  border: none;
  padding: 0;
}

/* Chapter block titles (H2) */
.path-node.page-node-type-page .region--content-below .block__title {
  font-family: 'Metropolis', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 1.75rem;
  font-weight: 700;
  color: #0073b9;
  margin: 0 0 1.25rem 0;
  padding-bottom: 0.5rem;
  border-bottom: 3px solid #0073b9;
  line-height: 1.3;
}

/* Chapter links inside blocks */
.path-node.page-node-type-page .region--content-below .views-row {
  margin-bottom: 0.75rem;
  padding: 0;
}

.path-node.page-node-type-page .region--content-below .views-field-title {
  margin: 0;
}

.path-node.page-node-type-page .region--content-below .views-field-title a {
  color: #0071b8;
  text-decoration: none;
  font-size: 1rem;
  line-height: 1.6;
  font-weight: 500;
  display: block;
  padding: 0.35rem 0;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.path-node.page-node-type-page .region--content-below .views-field-title a:hover {
  color: #0056a0;
  padding-left: 0.5rem;
  text-decoration: underline;
}

/* Sidebar styling (4th block) */
.path-node.page-node-type-page .region--content-below .block:nth-child(4) {
  background: #f5f7f9;
  padding: 1.5rem;
  border-radius: 4px;
  border: 1px solid #d4dce4;
}

.path-node.page-node-type-page .region--content-below .block:nth-child(4) .block__title {
  font-size: 1.25rem;
  color: #333;
  border-bottom: 2px solid #0073b9;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
}

.path-node.page-node-type-page .region--content-below .block:nth-child(4) .views-row {
  margin-bottom: 0.5rem;
}

.path-node.page-node-type-page .region--content-below .block:nth-child(4) .views-field-title a {
  font-size: 0.95rem;
  color: #0071b8;
  font-weight: 600;
}

/* Typography refinements */
.path-node.page-node-type-page .main-content {
  background: #fff;
}

.path-node.page-node-type-page .main-content__container {
  max-width: 100%;
}

/* Responsive: stack on mobile */
@media (max-width: 900px) {
  .path-node.page-node-type-page .region--content-below {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .path-node.page-node-type-page .region--content-below .block:nth-child(4) {
    grid-column: 1;
    grid-row: auto;
    position: static;
  }
}

/* Light theme color adjustments */
body:not(.dark-mode) .path-node.page-node-type-page .region--content-below .block__title {
  color: #0073b9;
}

body:not(.dark-mode) .path-node.page-node-type-page .region--content-below .views-field-title a {
  color: #0071b8;
}

/* Dark mode adjustments */
html.dark-mode .path-node.page-node-type-page .region--content-below .block__title {
  color: #4ab2ff;
  border-bottom-color: #4ab2ff;
}

html.dark-mode .path-node.page-node-type-page .region--content-below .views-field-title a {
  color: #5eb9ff;
}

html.dark-mode .path-node.page-node-type-page .region--content-below .views-field-title a:hover {
  color: #8fcdff;
}

html.dark-mode .path-node.page-node-type-page .region--content-below .block:nth-child(4) {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.15);
}

html.dark-mode .path-node.page-node-type-page .region--content-below .block:nth-child(4) .block__title {
  color: #e0e0e0;
  border-bottom-color: #4ab2ff;
}