/* ============================================================
   Calyber AI — Blog Styles
   Extends brand CSS (style.css) for blog listing + article pages
   ============================================================ */

/* ---- Blog Listing Page ---- */
.blog-hero {
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--color-border);
}

.blog-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 12px;
}

.blog-hero p {
  font-size: 1.125rem;
  max-width: 600px;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 32px;
  padding: 56px 0 80px;
}

.blog-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}

.blog-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.blog-card-body {
  padding: 28px 24px 24px;
}

.blog-card-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-amber);
  background: var(--color-amber-light);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
}

.blog-card-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-charcoal);
  margin-bottom: 10px;
}

.blog-card-excerpt {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.blog-card-meta-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--color-text-muted);
  opacity: 0.5;
}

/* ---- Article Page ---- */
.article-header {
  padding: 64px 0 40px;
  border-bottom: 1px solid var(--color-border);
}

.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.article-breadcrumb a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 0.15s;
}

.article-breadcrumb a:hover {
  color: var(--color-amber);
}

.article-breadcrumb-sep {
  opacity: 0.4;
}

.article-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-amber);
  background: var(--color-amber-light);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}

.article-header h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  line-height: 1.15;
  margin-bottom: 16px;
  max-width: 720px;
}

.article-subtitle {
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--color-charcoal-light);
  max-width: 620px;
  margin-bottom: 24px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.article-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.article-meta-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--color-text-muted);
  opacity: 0.5;
}

/* ---- Article Body — Reading Experience ---- */
.article-body {
  padding: 48px 0 64px;
}

.article-content {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 24px;
}

.article-content h2 {
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  margin-top: 48px;
  margin-bottom: 16px;
  color: var(--color-charcoal);
}

.article-content h3 {
  font-size: clamp(1.15rem, 2.5vw, 1.4rem);
  margin-top: 36px;
  margin-bottom: 12px;
  color: var(--color-charcoal);
}

.article-content p {
  font-size: 1.0625rem;
  line-height: 1.75;
  margin-bottom: 20px;
  color: var(--color-charcoal-light);
}

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

.article-content a {
  color: var(--color-amber);
  text-decoration: underline;
  text-decoration-color: rgba(232, 130, 12, 0.3);
  text-underline-offset: 3px;
  transition: text-decoration-color 0.15s;
}

.article-content a:hover {
  text-decoration-color: var(--color-amber);
}

.article-content ul,
.article-content ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

.article-content li {
  font-size: 1.0625rem;
  line-height: 1.75;
  margin-bottom: 8px;
  color: var(--color-charcoal-light);
}

.article-content li::marker {
  color: var(--color-amber);
}

.article-content blockquote {
  border-left: 3px solid var(--color-amber);
  margin: 32px 0;
  padding: 20px 24px;
  background: var(--color-white);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.article-content blockquote p {
  font-size: 1.0625rem;
  font-style: italic;
  color: var(--color-charcoal);
  margin-bottom: 0;
}

.article-content blockquote p + p {
  margin-top: 12px;
}

/* Callout boxes for key takeaways */
.article-callout {
  background: var(--color-amber-light);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin: 32px 0;
}

.article-callout-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-amber-dark);
  margin-bottom: 8px;
}

.article-callout p {
  font-size: 1rem;
  color: var(--color-charcoal);
  margin-bottom: 0;
}

/* Comparison tables */
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 0.9375rem;
}

.article-content thead th {
  text-align: left;
  font-weight: 600;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  padding: 12px 16px;
  border-bottom: 2px solid var(--color-border);
  background: var(--color-white);
}

.article-content tbody td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-charcoal-light);
  line-height: 1.5;
}

.article-content tbody tr:last-child td {
  border-bottom: none;
}

/* Highlight row */
.article-content tbody tr.highlight td {
  background: var(--color-amber-light);
  font-weight: 600;
  color: var(--color-charcoal);
}

/* Large stat callout */
.article-stat {
  text-align: center;
  padding: 40px 24px;
  margin: 36px 0;
  background: var(--color-indigo);
  border-radius: var(--radius-lg);
  color: var(--color-white);
}

.article-stat-number {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  font-weight: 700;
  line-height: 1;
  margin-bottom: 8px;
  color: var(--color-amber);
}

.article-stat-label {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.8);
}

/* ---- Article CTA Section ---- */
.article-cta {
  background: var(--color-indigo);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  text-align: center;
  margin: 48px auto 0;
  max-width: 680px;
}

.article-cta h3 {
  font-family: var(--font-heading);
  color: var(--color-white);
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.article-cta p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1rem;
  margin-bottom: 24px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.article-cta .btn-primary {
  background-color: var(--color-amber);
  color: var(--color-white);
}

/* ---- Related Posts ---- */
.related-posts {
  padding: 64px 0 80px;
  border-top: 1px solid var(--color-border);
}

.related-posts h2 {
  font-size: 1.5rem;
  margin-bottom: 32px;
}

.related-posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .blog-grid {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 40px 0 64px;
  }

  .blog-hero {
    padding: 48px 0 32px;
  }

  .article-header {
    padding: 48px 0 32px;
  }

  .article-body {
    padding: 32px 0 48px;
  }

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

  .article-meta {
    flex-wrap: wrap;
    gap: 12px;
  }

  .article-cta {
    padding: 36px 24px;
    margin-left: 24px;
    margin-right: 24px;
  }

  .article-stat {
    padding: 32px 20px;
    margin-left: 0;
    margin-right: 0;
  }

  .article-content table {
    font-size: 0.8125rem;
  }

  .article-content thead th,
  .article-content tbody td {
    padding: 10px 10px;
  }

  .related-posts-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .article-content {
    padding: 0 16px;
  }

  .article-callout {
    padding: 20px;
  }

  .blog-card-title {
    font-size: 1.2rem;
  }
}