/* Blog: sidebar category nav + two-column layout */

.blog-layout {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: var(--spacing-lg);
  margin-top: 0;
  margin-bottom: var(--spacing-xl);
}

.blog-layout-main {
  flex: 1 1 18rem;
  min-width: 0;
}

.blog-layout .blog-sidebar {
  flex: 0 0 20rem;
  max-width: 100%;
  position: sticky;
  top: calc(var(--nav-height) + var(--spacing-md));
}

.blog-header {
  margin-bottom: var(--spacing-md);
}

.blog-header-description {
  margin: var(--spacing-xs) 0 0;
  max-width: 42em;
  color: var(--color-text);
  line-height: var(--line-height-base);
}

.blog-section-eyebrow {
  margin: 0 0 var(--spacing-xs);
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.blog-article {
  margin: 0;
}

.blog-article-title {
  font-family: var(--font-heading);
  color: var(--color-secondary);
}

.blog-article-meta {
  margin: 0 0 var(--spacing-md);
  font-size: 0.95rem;
  color: var(--color-muted);
}

/*
 * Prose lists: reset.css sets ul { list-style-type: none; padding: 0; } for nav.
 * Markdown bullets (* / -) still become <ul><li>; they need markers + indent here.
 */
.blog-layout-main .post__content ul {
  list-style-type: disc;
  padding-left: 1.5em;
  margin: 0.85em 0;
}

.blog-layout-main .post__content ol {
  list-style-type: decimal;
  padding-left: 1.5em;
  margin: 0.85em 0;
}

.blog-layout-main .post__content li {
  margin: 0.35em 0;
  display: list-item;
}

.blog-layout-main .post__content ul ul,
.blog-layout-main .post__content ol ol,
.blog-layout-main .post__content ul ol,
.blog-layout-main .post__content ol ul {
  margin: 0.35em 0;
}

.blog-layout-main .post__content ul ul {
  list-style-type: circle;
}

.blog-layout-main .post__content ul ul ul {
  list-style-type: square;
}

.blog-sidebar {
  padding: var(--spacing-md);
  background: rgba(35, 57, 93, 0.06);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
}

.blog-sidebar-title {
  margin: 0 0 var(--spacing-md);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-secondary);
}

/* Sidebar: categories + post lists (hover / active) */
.blog-sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.blog-sidebar-category {
  border-bottom: 1px solid var(--color-border);
}

.blog-sidebar-category:last-child {
  border-bottom: 0;
}

.blog-sidebar-category-link {
  display: block;
  padding: var(--spacing-sm) var(--spacing-xs);
  margin: 0 calc(-1 * var(--spacing-xs));
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-secondary);
  text-decoration: none;
  border-radius: var(--border-radius-md);
  transition: background var(--transition-base), color var(--transition-base);
}

.blog-sidebar-category-link:hover {
  color: var(--color-primary);
  background: rgba(38, 184, 255, 0.08);
}

.blog-sidebar-category-link.is-active {
  color: var(--color-primary);
}

.blog-sidebar-posts {
  display: none;
  margin: 0 0 var(--spacing-sm);
  padding: 0 0 0 var(--spacing-xs);
  list-style: none;
}

.blog-sidebar-category.is-active .blog-sidebar-posts {
  display: block;
}

.blog-sidebar-category:hover .blog-sidebar-posts,
.blog-sidebar-category:focus-within .blog-sidebar-posts {
  display: block;
}

/* While hovering or focusing a category, hide the previously active category’s list unless it’s the one hovered/focused */
@supports selector(:has(*)) {
  @media (hover: hover) and (pointer: fine) {
    .blog-sidebar-nav:has(.blog-sidebar-category:hover) .blog-sidebar-category.is-active:not(:hover) .blog-sidebar-posts {
      display: none;
    }
  }

  .blog-sidebar-nav:has(.blog-sidebar-category:focus-within) .blog-sidebar-category.is-active:not(:hover):not(:focus-within) .blog-sidebar-posts {
    display: none;
  }
}

.blog-sidebar-post {
  display: flex;
  gap: var(--spacing-sm);
  align-items: baseline;
  margin: 0;
  padding: var(--spacing-xs) 0;
  border-bottom: 1px solid rgba(211, 211, 211, 0.6);
}

.blog-sidebar-post:last-child {
  border-bottom: 0;
}

.blog-sidebar-post-empty {
  display: block;
  padding: var(--spacing-xs) 0;
  font-size: 0.85rem;
  color: var(--color-muted);
  font-style: italic;
}

.blog-sidebar-post.is-current {
  padding-left: var(--spacing-xs);
  margin-left: calc(-1 * var(--spacing-xs));
  border-left: 3px solid var(--color-primary);
  background: rgba(38, 184, 255, 0.1);
  border-bottom-color: transparent;
  border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
}

.blog-sidebar-post-index {
  flex: 0 0 1.25rem;
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-muted);
  text-align: right;
}

.blog-sidebar-post.is-current .blog-sidebar-post-index {
  color: var(--color-primary);
}

.blog-sidebar-post-body {
  flex: 1;
  min-width: 0;
}

.blog-sidebar-post-link {
  display: block;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-secondary);
  text-decoration: none;
  line-height: 1.35;
}

a.blog-sidebar-post-link:hover {
  color: var(--color-primary);
}

.blog-sidebar-post.is-current .blog-sidebar-post-link {
  font-weight: 700;
  color: var(--color-primary);
}

.blog-sidebar-post-date {
  display: block;
  margin-top: 0.15em;
  font-size: 0.75rem;
  color: var(--color-muted);
}

.blog-empty {
  margin: var(--spacing-md) 0;
  padding: var(--spacing-md);
  color: var(--color-text);
  background: rgba(35, 57, 93, 0.04);
  border-radius: var(--border-radius-sm);
}

@media (max-width: 768px) {
  .blog-layout .blog-sidebar {
    flex: 1 1 100%;
    position: static;
  }

  /* Narrow viewports: collapse inactive categories until hover/focus */
  .blog-sidebar-category:not(.is-active):not(:hover):not(:focus-within) .blog-sidebar-posts {
    display: none;
  }
}

/* Post footer: side-by-side on wide viewports */
.blog-post-footer {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

.blog-post-footer-heading {
  margin-top: 0;
}

.blog-post-footer-discuss,
.blog-post-footer-continue {
  min-width: 0;
}

.blog-post-footer-links {
  margin: 0;
  padding-left: 1.2em;
}

.blog-post-footer-note {
  margin: var(--spacing-sm) 0 0;
  font-size: 0.9rem;
  color: var(--color-muted);
}

@media (min-width: 900px) {
  .blog-post-footer {
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: flex-start;
    gap: var(--spacing-xl);
  }

  .blog-post-footer-discuss,
  .blog-post-footer-continue {
    flex: 1 1 0;
  }
}