/* =============================================================
   article-page.css — shared styles for every /insights/<slug>/ page
   Extracted from the inline <style> blocks in existing articles so
   new articles only need their own body markup, not a duplicated
   400+ line inline block.

   Depends on: tokens.css, base.css, layout.css, components.css
   ============================================================= */

/* ----------------------------------------------------------------
   ARTICLE HERO
   ---------------------------------------------------------------- */
.article-hero {
  padding-top: calc(var(--header-height-desktop) + var(--space-12) + 36px + 44px);
  padding-bottom: 0;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border-subtle);
}
.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 90% 70% at 50% 0%, rgba(88, 28, 220, 0.10) 0%, transparent 65%);
  pointer-events: none;
}
.article-hero > * { position: relative; z-index: 1; }
.article-hero-inner {
  max-width: 760px;
  margin: 0 auto;
  padding-bottom: var(--space-10);
}

/* Breadcrumb */
.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}
.article-breadcrumb a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-default);
}
.article-breadcrumb a:hover { color: var(--color-text-secondary); }
.article-breadcrumb-sep { opacity: 0.4; }
.article-breadcrumb-current {
  color: var(--color-text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 300px;
}

/* Category badge */
.article-category-badge {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent-primary);
  background: var(--color-accent-glow);
  border: 1px solid var(--color-border-accent);
  border-radius: var(--radius-full);
  padding: 4px 12px;
  margin-bottom: var(--space-5);
}

/* Headline */
.article-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.875rem, 4.2vw, 3rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-5);
}
.article-subtitle {
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  max-width: 680px;
}

/* Byline */
.article-byline {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.article-byline-author {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}
.article-byline-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}
.article-byline-sep {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--color-text-muted);
  opacity: 0.4;
}

/* Follow row (colored social icons — the ONLY social row on article pages) */
.article-share {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-5);
  padding-top: var(--space-5);
  border-top: 1px solid rgba(255,255,255,0.06);
}
.article-share-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  font-weight: 500;
}
.article-share-list { display: flex; gap: var(--space-3); }
.article-share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.10);
  background: transparent;
  transition: var(--transition-default);
}
.article-share-btn[aria-label*="Instagram"] { color: #E4405F; }
.article-share-btn[aria-label*="X"] { color: #F0F4F8; }
.article-share-btn[aria-label*="Discord"] { color: #5865F2; }
.article-share-btn[aria-label*="Facebook"] { color: #1877F2; }
.article-share-btn[aria-label*="Reddit"] { color: #FF4500; }
.article-share-btn:hover {
  border-color: rgba(255,255,255,0.25);
  background: rgba(255,255,255,0.04);
  transform: translateY(-1px);
}

@media (max-width: 767px) {
  .article-hero {
    padding-top: calc(var(--header-height-mobile) + var(--space-8) + 32px + 40px);
  }
  .article-hero h1 { font-size: 1.625rem; }
  .article-breadcrumb-current { max-width: 180px; }
  .article-share { flex-wrap: wrap; }
}

/* ----------------------------------------------------------------
   HERO IMAGE WRAPPER
   ---------------------------------------------------------------- */
.article-hero-image {
  max-width: 960px;
  margin: 0 auto;
  padding: var(--space-8) var(--container-px) 0;
}
.article-hero-image figure { margin: 0; }
.article-hero-image img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 420px;
  object-fit: cover;
  object-position: center;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.06);
}

/* ----------------------------------------------------------------
   ARTICLE LAYOUT (content + sticky TOC sidebar)
   ---------------------------------------------------------------- */
.article-page-wrap { padding: var(--space-12) 0 var(--space-16); }
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 720px) 260px;
  gap: 56px;
  max-width: 1080px;
  margin: 0 auto;
  align-items: start;
  padding: 0 var(--container-px);
}
@media (max-width: 1023px) {
  .article-layout { grid-template-columns: 1fr; gap: var(--space-8); padding: 0 var(--container-px-mob); }
}

/* ----------------------------------------------------------------
   TOP DISCLAIMER (cyan-bordered educational-only note)
   ---------------------------------------------------------------- */
.article-disclaimer {
  background: rgba(0, 217, 255, 0.03);
  border: 1px solid var(--color-border-subtle);
  border-left: 3px solid rgba(0, 217, 255, 0.35);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  margin-bottom: var(--space-6);
}
.article-disclaimer p {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--color-text-muted);
  margin: 0;
}
.article-disclaimer strong { color: var(--color-text-secondary); }

/* ----------------------------------------------------------------
   KEY TAKEAWAYS BOX
   ---------------------------------------------------------------- */
.key-takeaways {
  background: var(--color-bg-surface-2);
  border: 1px solid var(--color-border-default);
  border-left: 3px solid var(--color-accent-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-8);
}
.key-takeaways-label {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent-primary);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.key-takeaways ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
}
.key-takeaways li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}
.key-takeaways li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent-primary);
  flex-shrink: 0;
  margin-top: 8px;
}

/* ----------------------------------------------------------------
   ARTICLE BODY TYPOGRAPHY
   ---------------------------------------------------------------- */
.article-body { color: var(--color-text-secondary); }
.article-body p {
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-5);
}
.article-body h2 {
  font-family: var(--font-display);
  font-size: 1.625rem;
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin-top: var(--space-12);
  margin-bottom: var(--space-5);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border-subtle);
  scroll-margin-top: calc(var(--header-height-desktop) + 36px + 44px + 24px);
}
.article-body h2:first-of-type {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}
.article-body h3 {
  font-size: 1.1875rem;
  font-weight: 600;
  line-height: 1.32;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
  scroll-margin-top: calc(var(--header-height-desktop) + 36px + 44px + 24px);
}
.article-body a {
  color: var(--color-accent-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(0, 217, 255, 0.4);
  transition: text-decoration-color var(--duration-fast) var(--ease-default);
}
.article-body a:hover { text-decoration-color: var(--color-accent-primary); }
.article-body blockquote {
  border-left: 3px solid var(--color-border-accent-strong);
  background: rgba(0, 217, 255, 0.02);
  margin: var(--space-6) 0;
  padding: var(--space-4) var(--space-6);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}
.article-body blockquote p {
  font-size: 1.0625rem;
  font-style: italic;
  color: var(--color-text-primary);
  margin: 0;
  line-height: 1.7;
}
.article-body code {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-accent-primary);
  background: var(--color-bg-code);
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-subtle);
}
.article-body ul,
.article-body ol {
  padding-left: var(--space-6);
  margin-bottom: var(--space-5);
}
.article-body li {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-1);
}
.article-body strong {
  font-weight: 600;
  color: var(--color-text-primary);
}
.article-body figure { margin: var(--space-6) 0; }
.article-body figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
}
.article-body figcaption {
  margin-top: var(--space-2);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  font-style: italic;
  text-align: center;
}

/* Article tables */
.article-table-wrap {
  overflow-x: auto;
  margin: var(--space-6) 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-default);
}
.article-table,
.article-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
.article-table thead tr,
.article-body table thead tr {
  background: var(--color-bg-surface-3);
  border-bottom: 2px solid var(--color-accent-primary);
}
.article-table th,
.article-body table th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  white-space: nowrap;
}
.article-table td,
.article-body table td {
  padding: var(--space-3) var(--space-4);
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border-subtle);
  vertical-align: top;
}
.article-table tbody tr:nth-child(even) td,
.article-body table tbody tr:nth-child(even) td {
  background: rgba(0,0,0,0.12);
}
.article-table tbody tr:last-child td,
.article-body table tbody tr:last-child td {
  border-bottom: none;
}

/* ----------------------------------------------------------------
   SIDEBAR TABLE OF CONTENTS
   ---------------------------------------------------------------- */
.article-toc {
  position: sticky;
  top: calc(var(--header-height-desktop) + 36px + 44px + 24px);
  align-self: start;
  display: flex;
  flex-direction: column;
}
.article-toc-label {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent-primary);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border-accent);
  display: block;
}
.article-toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.article-toc-item a {
  display: block;
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: 6px var(--space-3);
  border-left: 2px solid var(--color-border-subtle);
  transition: color var(--duration-fast) var(--ease-default),
              border-color var(--duration-fast) var(--ease-default);
}
.article-toc-item a:hover {
  color: var(--color-text-secondary);
  border-left-color: var(--color-border-default);
}
.article-toc-item.is-active a {
  color: var(--color-accent-primary);
  border-left-color: var(--color-accent-primary);
  font-weight: 500;
}
@media (max-width: 1023px) {
  .article-toc { display: none; }
}

/* ----------------------------------------------------------------
   ARTICLE TAGS (end-of-body pill tags, # prefix removed)
   ---------------------------------------------------------------- */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255,255,255,0.06);
}
.article-tag {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-muted);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  text-decoration: none;
  transition: var(--transition-default);
}
.article-tag:hover {
  color: var(--color-accent-primary);
  border-color: var(--color-border-accent);
  background: var(--color-accent-glow);
}

/* ----------------------------------------------------------------
   AUTHOR BOX
   ---------------------------------------------------------------- */
.article-author-box {
  display: flex;
  gap: var(--space-5);
  align-items: flex-start;
  background: var(--color-bg-surface-2);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-top: var(--space-10);
}
.article-author-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-accent-glow);
  border: 1px solid var(--color-border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-accent-primary);
}
.article-author-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}
.article-author-bio {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
}
.article-author-link {
  font-size: 0.8125rem;
  color: var(--color-accent-primary);
  text-decoration: none;
  font-weight: 500;
}
.article-author-link:hover { text-decoration: underline; text-underline-offset: 3px; }

/* ----------------------------------------------------------------
   RELATED ARTICLES
   ---------------------------------------------------------------- */
.article-related { margin-top: var(--space-12); }
.article-related-label {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
  display: block;
}
.article-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}
@media (max-width: 767px) { .article-related-grid { grid-template-columns: 1fr; } }
.related-card {
  background: var(--color-bg-surface-2);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  transition: border-color var(--duration-normal) var(--ease-default);
}
.related-card:hover { border-color: var(--color-border-accent); }
.related-card-image,
.related-card img.related-card-img {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, rgba(0,217,255,0.04) 0%, rgba(88,28,220,0.08) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  object-fit: cover;
}
.related-card-body {
  padding: var(--space-4);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.related-card-cat {
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent-primary);
}
.related-card-title {
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-text-primary);
}
.related-card:hover .related-card-title { color: var(--color-accent-primary); }
.related-card-meta {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: auto;
}