/* ============================================
   Blog — extends assets/styles.css design tokens
   ============================================ */

/* ============ Breadcrumb ============ */
.breadcrumb-nav { padding: var(--space-4) 0 0; font-size: 13px; }
.breadcrumb-nav ol {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
}
.breadcrumb-nav li { display: flex; align-items: center; }
.breadcrumb-nav li:not(:last-child)::after {
  content: "/";
  margin: 0 8px;
  color: var(--color-border);
}
.breadcrumb-nav a { color: var(--color-muted-foreground); text-decoration: none; }
.breadcrumb-nav a:hover { color: var(--color-primary); text-decoration: underline; }
.breadcrumb-nav [aria-current] { color: var(--color-foreground); font-weight: 700; }

/* ============ Article header ============ */
.article-header { padding: var(--space-6) 0 var(--space-4); max-width: 780px; margin: 0 auto; }
.article-header h1 { font-size: clamp(28px, 4.5vw, 44px); margin-top: var(--space-3); }
.article-lede { font-size: 19px; color: var(--color-muted-foreground); margin-top: var(--space-3); }
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: 14px;
  color: var(--color-muted-foreground);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-meta svg { width: 16px; height: 16px; color: var(--color-accent); flex-shrink: 0; }

/* ============ Article body ============ */
.article-body { max-width: 780px; margin: 0 auto; padding-bottom: var(--space-4); font-size: 17px; }
.article-body h2 { font-size: clamp(24px, 3vw, 30px); margin-top: var(--space-7); }
.article-body h3 { margin-top: var(--space-5); }
.article-body p { margin: 0 0 var(--space-4); }
.article-body ul, .article-body ol { margin: 0 0 var(--space-4); padding-left: 1.25em; }
.article-body li { margin-bottom: var(--space-2); }
.article-body strong { color: var(--color-foreground); }

/* ============ Inline CTA blocks ============ */
.article-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-whatsapp);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin: var(--space-6) 0;
  box-shadow: var(--shadow-sm);
}
.article-cta p {
  margin: 0;
  flex: 1 1 320px;
  font-family: var(--font-display);
  font-size: 19px;
  color: var(--color-foreground);
}
.article-cta .btn { flex-shrink: 0; }

/* ============ Sources / citations ============ */
.sources-box {
  margin: var(--space-6) 0 var(--space-4);
  padding: var(--space-5);
  background: var(--color-muted);
  border-radius: var(--radius-md);
  font-size: 14px;
}
.sources-box h2 {
  font-size: 16px;
  margin: 0 0 var(--space-3);
  display: flex;
  align-items: center;
  gap: 8px;
}
.sources-box h2 svg { width: 18px; height: 18px; color: var(--color-accent); flex-shrink: 0; }
.sources-box ul { list-style: none; display: flex; flex-direction: column; gap: var(--space-2); margin: 0; padding: 0; }
.sources-box li { padding-left: 1.1em; position: relative; color: var(--color-muted-foreground); }
.sources-box li::before { content: "\2192"; position: absolute; left: 0; color: var(--color-accent); }
.sources-box a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 2px; }
.sources-box a:hover { color: var(--color-primary-dark); }

/* ============ Related articles ============ */
.related-articles { background: var(--color-muted); }
.related-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-4); margin-top: var(--space-5); }
.related-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-sm);
  transition: transform var(--duration) var(--easing), box-shadow var(--duration) var(--easing);
}
.related-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.related-card h3 { font-size: 19px; margin: 0; }
.related-card p { font-size: 14px; color: var(--color-muted-foreground); margin: 0; }
.related-card .read-more {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  font-size: 14px;
  color: var(--color-primary);
}
.related-card .read-more svg { width: 16px; height: 16px; transition: transform var(--duration) var(--easing); }
.related-card:hover .read-more svg { transform: translateX(3px); }

/* ============ Blog index ============ */
.blog-hero {
  padding-top: var(--space-8);
  padding-bottom: var(--space-6);
  background:
    radial-gradient(1000px 500px at 85% -10%, color-mix(in srgb, var(--color-primary) 10%, transparent), transparent),
    var(--color-background);
}
.blog-hero h1 { font-size: clamp(32px, 5vw, 48px); max-width: 760px; }
.blog-hero .lede { max-width: 640px; }

.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-5); margin-top: var(--space-6); }
.blog-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  color: inherit;
  transition: transform var(--duration) var(--easing), box-shadow var(--duration) var(--easing);
}
.blog-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.blog-card-meta { display: flex; gap: var(--space-3); font-size: 13px; color: var(--color-muted-foreground); }
.blog-card h2 { font-size: 21px; margin: 0; }
.blog-card p { font-size: 15px; color: var(--color-muted-foreground); margin: 0; flex: 1; }
.blog-card .read-more { display: inline-flex; align-items: center; gap: 6px; font-weight: 700; font-size: 15px; color: var(--color-primary); }
.blog-card .read-more svg { width: 18px; height: 18px; transition: transform var(--duration) var(--easing); }
.blog-card:hover .read-more svg { transform: translateX(3px); }

/* ============ Responsive ============ */
@media (max-width: 1024px) {
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .related-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .blog-grid { grid-template-columns: 1fr; }
  .article-cta { flex-direction: column; align-items: stretch; text-align: center; }
  .article-cta .btn { width: 100%; }
}