/* ==========================================================================
   ARTICLE PAGE STYLING
   World-Class Editorial Typography & Reading Layout
   ========================================================================== */

/* Reading Progress Indicator */
.reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background-color: var(--color-accent);
  z-index: 10001;
  transition: width 50ms linear;
}

/* Article Shell Layout */
.article-header-container {
  max-width: 960px;
  margin: 0 auto;
  padding-top: var(--space-lg);
  padding-bottom: var(--space-xl);
}

.article-headline {
  font-size: var(--text-hero);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.025em;
  margin-top: var(--space-xs);
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.article-deck {
  font-family: var(--font-serif);
  font-size: var(--text-deck);
  font-style: italic;
  line-height: 1.45;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

/* Byline and Publishing Metadata */
.article-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-md) 0;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.author-byline-cluster {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.author-avatar-lg {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-border);
}

.byline-details {
  display: flex;
  flex-direction: column;
}

.author-name-link {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
}

.author-name-link:hover {
  color: var(--color-accent);
}

.author-title {
  font-size: var(--text-caption);
  color: var(--color-text-muted);
}

.published-timestamp-row {
  font-size: var(--text-caption);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: 2px;
}

/* Audio Listen / Utility Tools */
.article-actions-cluster {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.btn-listen-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: var(--text-caption);
  font-weight: 600;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.btn-listen-pill:hover {
  background-color: var(--color-bg-muted);
  color: var(--color-text);
}

.btn-print-article {
  background-color: transparent;
  border: 1px solid var(--color-border);
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: var(--text-caption);
  color: var(--color-text-muted);
}

.btn-print-article:hover {
  background-color: var(--color-bg-subtle);
  color: var(--color-text);
}

/* Social Share Toolbar */
.share-bar-inline {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.btn-share {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background-color: #FFFFFF;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.btn-share:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #FFFFFF;
  transform: translateY(-1px);
}

/* Featured Media Block */
.article-featured-media {
  max-width: 1080px;
  margin: 0 auto var(--space-2xl) auto;
}

.featured-media-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: var(--color-bg-muted);
}

.featured-media-frame img, .featured-media-frame svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-caption-box {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-top: var(--space-xs);
  font-size: var(--text-caption);
  color: var(--color-text-muted);
  gap: var(--space-md);
}

.media-caption {
  font-style: normal;
  flex: 1;
}

.media-credit {
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.75rem;
  white-space: nowrap;
}

/* Main Article Content Grid (Measure + Rail) */
.article-body-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: var(--space-3xl);
  max-width: 1160px;
  margin: 0 auto;
}

.article-content-column {
  max-width: var(--container-article);
  margin: 0 auto;
  font-size: var(--text-body);
  line-height: 1.8;
  color: var(--color-text);
}

.article-content-column p {
  margin-bottom: 1.65rem;
}

.article-content-column p.article-lead {
  font-size: 1.25rem;
  line-height: 1.65;
  color: var(--color-text);
  font-family: var(--font-sans);
}

.article-content-column h2 {
  font-size: 1.85rem;
  font-weight: 800;
  margin-top: 2.75rem;
  margin-bottom: 1.15rem;
  line-height: 1.2;
}

.article-content-column h3 {
  font-size: 1.45rem;
  font-weight: 700;
  margin-top: 2rem;
  margin-bottom: 0.85rem;
  line-height: 1.3;
}

/* Editorial Blockquote */
.editorial-quote {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-lg);
  margin: 2.5rem 0;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.35rem;
  line-height: 1.5;
  color: var(--color-text-secondary);
}

.editorial-quote cite {
  display: block;
  font-family: var(--font-sans);
  font-style: normal;
  font-size: var(--text-body-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

/* Highlighted Fact / Callout Box */
.article-callout {
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-sm);
  padding: var(--space-lg);
  margin: 2.5rem 0;
}

.callout-title {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.callout-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  font-size: 0.95rem;
  line-height: 1.6;
}

.callout-list li {
  position: relative;
  padding-left: 1.25rem;
}

.callout-list li::before {
  content: "■";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-size: 0.75rem;
  top: 2px;
}

/* Data Tables */
.table-responsive {
  overflow-x: auto;
  margin: 2.5rem 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.data-table {
  width: 100%;
  font-size: 0.9rem;
  text-align: left;
}

.data-table thead {
  background-color: var(--color-bg-subtle);
  border-bottom: 2px solid var(--color-border);
}

.data-table th {
  padding: 0.85rem 1rem;
  font-family: var(--font-sans);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.02em;
}

.data-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text-secondary);
}

.data-table tbody tr:hover {
  background-color: var(--color-surface-hover);
}

/* FAQ Accordion Component */
.faq-accordion {
  margin: 2.5rem 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: #FFFFFF;
}

.faq-question {
  padding: 1rem 1.25rem;
  font-weight: 700;
  font-size: 1.05rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.faq-question:hover {
  color: var(--color-accent);
}

.faq-answer {
  padding: 0 1.25rem 1.25rem 1.25rem;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* Source Attribution Box */
.article-sources {
  background-color: var(--color-bg-subtle);
  border-top: 1px solid var(--color-border);
  padding: var(--space-md) var(--space-lg);
  margin-top: 3rem;
  font-size: 0.85rem;
}

.sources-title {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}

.sources-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.sources-list a {
  color: var(--color-accent);
  text-decoration: underline;
}

/* Article Sidebar Rail */
.article-sidebar-rail {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
}

.sidebar-widget {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-lg);
}

.widget-title {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text);
  border-bottom: 2px solid var(--color-primary);
  padding-bottom: var(--space-xs);
  margin-bottom: var(--space-md);
}

/* Author Biography Card (Bottom of Article) */
.author-bio-card {
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-xl);
  margin: var(--space-3xl) 0;
  display: flex;
  gap: var(--space-lg);
  align-items: flex-start;
}

.author-bio-avatar {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.author-bio-info h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.author-bio-role {
  font-size: 0.85rem;
  color: var(--color-accent);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-xs);
}

.author-bio-text {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

/* Tag Cloud Pills */
.article-tags-cluster {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin: var(--space-xl) 0;
}

.tag-pill {
  display: inline-block;
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.tag-pill:hover {
  background-color: var(--color-primary);
  color: #FFFFFF;
  border-color: var(--color-primary);
}

/* Story Pagination / Next Prev */
.story-nav-bar {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-lg) 0;
  margin: var(--space-2xl) 0;
}

.story-nav-item {
  display: flex;
  flex-direction: column;
}

.story-nav-dir {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 0.25rem;
}

.story-nav-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}

.story-nav-title:hover {
  color: var(--color-accent);
}