/* ============================================
   Element Human — Article Page Styles
   Extends: styles.css (design system)
   ============================================ */

/* ---------- Article Hero ---------- */
.article-hero {
  padding: 140px 0 48px;
  position: relative;
  text-align: center;
}

.article-hero .container {
  max-width: 820px;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.article-category {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  color: white;
  font-weight: 600;
}

.article-category[data-cat="ai"] { background: linear-gradient(135deg, var(--teal), var(--blue)); }
.article-category[data-cat="emotions"] { background: linear-gradient(135deg, var(--pink), var(--purple)); }
.article-category[data-cat="insights"] { background: linear-gradient(135deg, var(--blue), var(--cyan)); }
.article-category[data-cat="influencer-marketing"] { background: linear-gradient(135deg, var(--pink), var(--red)); }
.article-category[data-cat="market-research"] { background: linear-gradient(135deg, var(--purple), var(--blue)); }
.article-category[data-cat="advertising"] { background: linear-gradient(135deg, var(--amber), var(--red)); }
.article-category[data-cat="eh-product"] { background: linear-gradient(135deg, var(--green), var(--teal)); }
.article-category[data-cat="company-updates"] { background: linear-gradient(135deg, var(--teal), var(--cyan)); }
.article-category[data-cat="creator-economy"] { background: linear-gradient(135deg, var(--pink), var(--amber)); }

.article-date,
.article-author {
  font-size: 14px;
  color: var(--text-muted);
}

.article-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--text-muted);
  opacity: 0.5;
}

.article-title {
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 700;
  line-height: 1.2;
  margin: 0 auto 20px;
  max-width: 820px;
}

.article-summary {
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 680px;
  margin: 0 auto 32px;
}

.article-hero-image {
  display: block;
  width: 100%;
  max-width: 640px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--glass-border);
  margin: 16px auto 0;
}

/* ---------- Article Layout ---------- */
.article-layout {
  display: grid;
  grid-template-columns: 1fr min(720px, 100%) 1fr;
  padding-bottom: 80px;
}

.article-layout > * {
  grid-column: 2;
}

/* ---------- Article Content ---------- */
.article-content {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text);
}

.article-content h2 {
  font-size: clamp(24px, 3.2vw, 32px);
  font-weight: 800;
  margin: 56px 0 18px;
  line-height: 1.25;
  color: var(--text);
  letter-spacing: -0.3px;
}

.article-content h3 {
  font-size: clamp(20px, 2.6vw, 24px);
  font-weight: 700;
  margin: 40px 0 14px;
  line-height: 1.3;
  color: var(--text);
}

.article-content h4 {
  font-size: clamp(17px, 2vw, 19px);
  font-weight: 600;
  margin: 32px 0 10px;
  line-height: 1.4;
  color: var(--text);
  opacity: 0.9;
}

.article-content h2:first-child,
.article-content h3:first-child {
  margin-top: 0;
}

.article-content p {
  margin-bottom: 20px;
  color: var(--text);
  opacity: 0.9;
}

.article-content a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s;
}

.article-content a:hover {
  color: var(--cyan);
}

.article-content ul,
.article-content ol {
  margin: 16px 0 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.article-content li {
  line-height: 1.7;
  color: var(--text);
  opacity: 0.9;
}

.article-content blockquote {
  border-left: 3px solid var(--blue);
  padding: 16px 24px;
  margin: 28px 0;
  background: var(--glass-bg);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--text-muted);
}

.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  margin: 24px 0;
}

.article-content figure {
  margin: 28px 0;
  position: relative;
}

.article-content figure iframe {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-sm);
  border: 1px solid var(--glass-border);
}

.article-content strong {
  font-weight: 600;
  color: var(--text);
}

.article-content hr {
  border: none;
  border-top: 1px solid var(--glass-border);
  margin: 40px 0;
}

.article-content pre,
.article-content code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
}

.article-content pre {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 20px;
  overflow-x: auto;
  margin: 24px 0;
}

.article-content code {
  background: rgba(255, 255, 255, 0.06);
  padding: 2px 6px;
  border-radius: 4px;
}

/* ---------- Back Link ---------- */
.article-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 32px;
  transition: color 0.2s;
  letter-spacing: 0.3px;
}

.article-back:hover {
  color: var(--text);
}

/* ---------- Article CTA ---------- */
.article-cta {
  padding: 48px 0 80px;
  text-align: center;
}

.article-cta-card {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px;
  text-align: center;
}

.article-cta-card h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 12px;
}

.article-cta-card p {
  color: var(--text-muted);
  margin-bottom: 24px;
  font-size: 16px;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .article-hero {
    padding: 120px 0 32px;
  }

  .article-title {
    font-size: 28px;
  }

  .article-summary {
    font-size: 16px;
  }

  .article-content {
    font-size: 16px;
  }

  .article-content h2 {
    font-size: 22px;
    margin-top: 36px;
  }

  .article-content h3 {
    font-size: 19px;
    margin-top: 30px;
  }

  .article-layout {
    grid-template-columns: 1fr;
    padding: 0 24px 60px;
  }

  .article-cta-card {
    padding: 32px 20px;
  }
}

/* ---------- Article Lede ---------- */
.article-lede {
  font-size: 20px;
  line-height: 1.8;
  color: var(--text-muted);
  margin-bottom: 32px;
  font-weight: 400;
}

/* ---------- Key Takeaways ---------- */
.key-takeaways {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-left: 4px solid var(--green);
  border-radius: var(--radius-sm);
  padding: 28px 32px;
  margin: 32px 0 40px;
}

.key-takeaways h2 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 16px;
  color: var(--green);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-family: 'JetBrains Mono', monospace;
}

.key-takeaways ul {
  margin: 0;
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.key-takeaways li {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  opacity: 0.9;
}

/* ---------- Article FAQ ---------- */
.article-faq {
  margin: 48px 0;
  padding: 32px 0;
  border-top: 1px solid var(--glass-border);
}

.article-faq h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 24px;
}

.article-faq details {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
}

.article-faq summary {
  padding: 18px 24px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: background 0.2s;
}

.article-faq summary:hover {
  background: rgba(255, 255, 255, 0.03);
}

.article-faq summary::-webkit-details-marker { display: none; }

.article-faq summary::after {
  content: '+';
  font-size: 20px;
  font-weight: 400;
  color: var(--blue);
  flex-shrink: 0;
  transition: transform 0.2s;
}

.article-faq details[open] summary::after {
  content: '\2212';
}

.article-faq details > div {
  padding: 0 24px 20px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ---------- Related Articles ---------- */
.related-articles {
  margin: 48px 0;
  padding-top: 32px;
  border-top: 1px solid var(--glass-border);
}

.related-articles h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 24px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.related-grid .glass-card {
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.3s, box-shadow 0.3s;
  text-decoration: none;
  color: inherit;
}

.related-grid .glass-card:hover {
  border-color: var(--blue);
  box-shadow: 0 0 24px rgba(0, 122, 255, 0.15);
}

.related-grid .glass-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
}

.related-grid .glass-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  flex-grow: 1;
  margin-bottom: 12px;
}

.related-grid .glass-card .text-link {
  font-size: 13px;
}

/* ---------- Compare Table ---------- */
.compare-table-wrapper {
  overflow-x: auto;
  margin: 32px 0;
  -webkit-overflow-scrolling: touch;
}

.compare-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  min-width: 600px;
}

.compare-table th,
.compare-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--glass-border);
  font-size: 14px;
}

.compare-table thead th {
  background: rgba(255, 255, 255, 0.04);
  font-weight: 700;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text);
}

.compare-table thead th:first-child {
  color: var(--text-muted);
}

.compare-table thead th:nth-child(2) {
  color: var(--green);
}

.compare-table tbody td:nth-child(2) {
  color: var(--green);
  font-weight: 500;
}

.compare-table tbody tr:last-child td {
  border-bottom: none;
}

.compare-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

.compare-check {
  color: var(--green);
  font-size: 18px;
}

.compare-x {
  color: var(--text-muted);
  opacity: 0.4;
  font-size: 18px;
}

.compare-partial {
  color: var(--amber);
  font-size: 14px;
}

/* ---------- Insights Category Filters ---------- */
.insights-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 40px;
}

.insights-filters button {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 8px 20px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
  text-transform: uppercase;
}

.insights-filters button:hover {
  border-color: var(--blue);
  color: var(--text);
}

.insights-filters button.active {
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  border-color: transparent;
  color: white;
  font-weight: 600;
}

/* ---------- Compare Page Hero ---------- */
.compare-hero {
  padding: 160px 0 60px;
  text-align: center;
}

.compare-hero h1 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
}

.compare-hero p {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.7;
}

.compare-section {
  padding: 48px 0;
}

.compare-section h2 {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 700;
  margin-bottom: 20px;
}

.compare-section p {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.compare-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin: 32px 0;
}

.compare-grid .glass-card {
  padding: 28px;
}

.compare-grid .glass-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--green);
}

.compare-grid .glass-card p {
  font-size: 14px;
  margin-bottom: 0;
}

/* ---------- Responsive Updates ---------- */
@media (max-width: 768px) {
  .related-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .compare-table-wrapper {
    margin: 24px -16px;
    padding: 0 16px;
  }

  .compare-grid {
    grid-template-columns: 1fr;
  }

  .key-takeaways {
    padding: 20px 24px;
  }

  .article-faq summary {
    padding: 14px 18px;
    font-size: 15px;
  }

  .article-faq details > div {
    padding: 0 18px 16px;
  }

  .insights-filters {
    gap: 8px;
  }

  .insights-filters button {
    padding: 6px 14px;
    font-size: 11px;
  }

  .compare-hero {
    padding: 140px 0 40px;
  }
}