/* ==========================================================================
   Post Frontmatter Styles
   ==========================================================================
   Styles for rendering all frontmatter fields in post layouts.
   
   Fields covered:
   - Hero image with caption
   - Meta bar (date, duration, type)
   - Description/Excerpt
   - Roles
   - Organizations
   - Categories & Tags
   - External Links
   - Process Steps
   - Related Posts
   - Grid Links
   ========================================================================== */

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.post-hero {
  position: relative;
  margin: calc(-1 * var(--space-lg)) calc(-1 * var(--space-lg)) var(--space-lg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg-secondary);
}

@media (max-width: 768px) {
  .post-hero {
    margin: calc(-1 * var(--space-md)) calc(-1 * var(--space-md)) var(--space-md);
    border-radius: var(--radius-md);
  }
}

.post-hero-image {
  position: relative;
  width: 100%;
  aspect-ratio: 21 / 9;
  overflow: hidden;
}

.post-hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow);
}

.post-hero:hover .post-hero-image img {
  transform: scale(1.02);
}

.post-hero-content {
  padding: var(--space-lg);
  background: linear-gradient(to bottom, transparent, var(--color-bg));
}

.post-hero .post-title {
  font-size: var(--text-3xl);
  margin: 0 0 var(--space-sm);
  line-height: var(--leading-tight);
}

.post-caption {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin: 0;
  font-style: italic;
}

/* --------------------------------------------------------------------------
   Meta Bar
   -------------------------------------------------------------------------- */
.post-meta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md) var(--space-lg);
  padding: var(--space-md) 0;
  margin-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.meta-icon {
  flex-shrink: 0;
  color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   Section Labels (used across multiple sections)
   -------------------------------------------------------------------------- */
.section-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

/* --------------------------------------------------------------------------
   Description & Excerpt
   -------------------------------------------------------------------------- */
.post-description,
.post-excerpt {
  padding: var(--space-md);
  margin-bottom: var(--space-lg);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-primary);
}

.post-description p,
.post-excerpt p {
  margin: 0;
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

.post-excerpt {
  background: var(--color-bg-tertiary);
  border-left-color: var(--color-success);
}

/* --------------------------------------------------------------------------
   Roles
   -------------------------------------------------------------------------- */
.post-roles {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.role-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.role-tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-sm);
  background: var(--accent-color-faded);
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: capitalize;
}

/* --------------------------------------------------------------------------
   Organizations
   -------------------------------------------------------------------------- */
.post-organizations {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.org-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.org-item {
  padding: var(--space-md);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  transition: transform var(--duration-fast), box-shadow var(--duration-fast);
}

.org-item:hover,
.org-item:focus-within {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.org-item:focus-within {
  outline: 2px solid var(--color-link);
  outline-offset: 2px;
}

.org-name {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
}

.org-name:hover,
.org-name:focus-visible {
  color: var(--color-primary);
}

.org-name:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.org-name svg {
  opacity: 0.6;
}

.org-description {
  margin: var(--space-xs) 0 0;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* --------------------------------------------------------------------------
   Categories & Tags
   -------------------------------------------------------------------------- */
.post-taxonomies {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.taxonomy-group {
  margin-bottom: var(--space-md);
}

.taxonomy-group:last-child {
  margin-bottom: 0;
}

.taxonomy-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.taxonomy-tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--text-sm);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: all var(--duration-fast);
}

.taxonomy-tag:not(.category) {
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.taxonomy-tag:not(.category):hover,
.taxonomy-tag:not(.category):focus-visible {
  background: var(--accent-color-faded);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.taxonomy-tag:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.taxonomy-tag.category {
  background: var(--color-primary);
  color: white;
  font-weight: 600;
}

.taxonomy-tag.category:hover,
.taxonomy-tag.category:focus-visible {
  background: var(--accent-color-hover);
  transform: translateY(-1px);
}

/* --------------------------------------------------------------------------
   External Links
   -------------------------------------------------------------------------- */
.post-links {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.link-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.post-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg-secondary);
  color: var(--color-text);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  text-decoration: none;
  transition: all var(--duration-fast);
}

.post-link:hover,
.post-link:focus-visible {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

.post-link:focus-visible {
  outline: 2px solid var(--color-link);
  outline-offset: 2px;
}

.post-link svg {
  transition: transform var(--duration-fast);
}

.post-link:hover svg {
  transform: translate(2px, -2px);
}

/* --------------------------------------------------------------------------
   Process Steps
   -------------------------------------------------------------------------- */
.post-process {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.process-steps {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.process-step {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--color-primary);
  color: white;
  font-size: var(--text-sm);
  font-weight: 700;
  border-radius: var(--radius-full);
}

.step-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

/* --------------------------------------------------------------------------
   Related Posts (Mini)
   -------------------------------------------------------------------------- */
.post-related-mini {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.related-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.related-mini-link {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all var(--duration-fast);
}

.related-mini-link:hover,
.related-mini-link:focus-visible {
  background: var(--accent-color-faded);
  color: var(--color-primary);
}

.related-mini-link:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   Grid Links (Resource Collections)
   -------------------------------------------------------------------------- */
.post-grid-links {
  margin: var(--space-xl) 0;
  padding: var(--space-lg);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
}

.grid-links {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-md);
}

.grid-link {
  display: flex;
  flex-direction: column;
  padding: var(--space-md);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  text-decoration: none;
  transition: all var(--duration-fast);
}

.grid-link:hover,
.grid-link:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.grid-link:focus-visible {
  outline: 2px solid var(--color-link);
  outline-offset: 2px;
}

.grid-link-title {
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.grid-link-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-snug);
}


/* NOTE: TOC styles in 8-page-sections.css */
/* --------------------------------------------------------------------------
   Dark Mode Adjustments
   -------------------------------------------------------------------------- */
[data-theme="dark"] .post-hero-content,
.dark-mode .post-hero-content {
  background: linear-gradient(to bottom, transparent, var(--color-bg));
}

[data-theme="dark"] .post-hero-image img,
.dark-mode .post-hero-image img {
  filter: brightness(0.85);
}

[data-theme="dark"] .org-item,
[data-theme="dark"] .grid-link,
.dark-mode .org-item,
.dark-mode .grid-link {
  background: var(--color-bg-secondary);
  border-color: var(--color-border);
}

[data-theme="dark"] .org-item:hover,
[data-theme="dark"] .grid-link:hover,
.dark-mode .org-item:hover,
.dark-mode .grid-link:hover {
  box-shadow: 0 4px 12px rgba(var(--shadow-color), var(--alpha-30));
}

[data-theme="dark"] .post-description,
.dark-mode .post-description {
  border-color: var(--color-border);
}

[data-theme="dark"] .role-tag,
.dark-mode .role-tag {
  background: var(--color-bg-tertiary);
}

/* --------------------------------------------------------------------------
   Print Styles
   -------------------------------------------------------------------------- */
@media print {
  .post-hero {
    margin: 0;
    break-inside: avoid;
  }
  
  .post-hero-image {
    aspect-ratio: auto;
    max-height: 300px;
  }
  
  .post-meta-bar,
  .post-links,
  .post-taxonomies,
  .toc,
  .post-nav {
    border-color: #ddd;
  }
  
  .role-tag,
  .taxonomy-tag,
  .post-link {
    border: 1px solid #ddd;
    background: none !important;
  }
}