/* ── Content layout ── */
.content-page {
  padding: var(--space-2xl) 0 var(--space-3xl);
}

.content-page__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

@media (min-width: 768px) {
  .content-page__inner { padding: 0 var(--space-2xl); }
}

@media (min-width: 1024px) {
  .content-page__inner {
    grid-template-columns: var(--sidebar-width) 1fr;
    padding: 0 var(--space-3xl);
  }
}

/* ── Sidebar ── */
.content-sidebar {
  display: none;
}

@media (min-width: 1024px) {
  .content-sidebar {
    display: block;
    position: sticky;
    top: calc(var(--header-height) + var(--space-lg));
    max-height: calc(100vh - var(--header-height) - var(--space-2xl));
    overflow-y: auto;
    padding-right: var(--space-md);
    scrollbar-width: thin;
    scrollbar-color: var(--color-border) transparent;
  }
}

.toc__title {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  margin-bottom: var(--space-sm);
}

.toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 2px solid var(--color-border);
}

.toc__item { margin: 0; }

.toc__link {
  display: block;
  padding: 3px var(--space-sm);
  font-size: var(--text-sm);
  color: var(--color-muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  margin-left: -2px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  line-height: 1.4;
}

.toc__link:hover,
.toc__link.is-active {
  color: var(--color-ocean);
  border-left-color: var(--color-ocean);
  text-decoration: none;
}

.toc__item--h3 .toc__link { padding-left: calc(var(--space-sm) + var(--space-md)); font-size: var(--text-xs); }

/* ── Article body ── */
.article-body {
  min-width: 0;
  max-width: var(--content-width);
}

@media (min-width: 1024px) {
  .article-body { max-width: none; }
}

/* headings */
.article-body h1 {
  font-size: var(--text-3xl);
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-border);
}

.article-body h2 {
  font-size: var(--text-2xl);
  color: var(--color-navy);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--color-border);
}

.article-body h3 {
  font-size: var(--text-xl);
  color: var(--color-ocean);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.article-body h4 {
  font-size: var(--text-lg);
  color: var(--color-navy);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}

/* Header anchor links — markdown-it-anchor wraps the full heading text in <a class="header-anchor">
   so the anchor IS the heading text. Show a # indicator via ::after on hover only. */
.article-body h2 a.header-anchor,
.article-body h3 a.header-anchor,
.article-body h4 a.header-anchor {
  color: inherit;
  text-decoration: none;
}

.article-body h2 a.header-anchor::after,
.article-body h3 a.header-anchor::after,
.article-body h4 a.header-anchor::after {
  content: ' #';
  opacity: 0;
  font-size: 0.7em;
  font-weight: 400;
  color: var(--color-ocean);
  transition: opacity var(--transition-fast);
}

.article-body h2:hover a.header-anchor::after,
.article-body h3:hover a.header-anchor::after,
.article-body h4:hover a.header-anchor::after {
  opacity: 0.55;
}

/* paragraphs / lists */
.article-body p { margin-bottom: var(--space-md); }
.article-body ul,
.article-body ol {
  margin-bottom: var(--space-md);
  padding-left: var(--space-xl);
}
.article-body li { margin-bottom: var(--space-xs); }

/* ── Related pages ── */
.related-pages {
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.related-pages__title {
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  margin-bottom: var(--space-md);
}

.related-pages__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  list-style: none;
  margin: 0;
  padding: 0;
}

.related-pages__list li { margin: 0; }

.related-pages__link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-ocean);
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.related-pages__link:hover {
  background: var(--color-code-bg);
  border-color: var(--color-ocean);
  transform: translateX(4px);
  text-decoration: none;
}

.related-pages__link::before {
  content: '→';
  font-weight: 700;
  flex-shrink: 0;
}