/* =============================================================
   Blog styles — extends the main design system
   ============================================================= */

:root {
  --color-surface: var(--card);
  --color-border: var(--border);
  --color-muted: var(--muted-foreground);
  --color-accent: var(--primary);
  --color-accent-subtle: color-mix(in srgb, var(--primary) 10%, transparent);
  --color-warning: var(--accent);
  --color-warning-subtle: color-mix(in srgb, var(--accent) 15%, transparent);
  --color-text: var(--foreground);
  --color-surface-alt: var(--secondary);
  --color-code-bg: var(--secondary);
}

/* ── Blog listing page ──────────────────────────────────────── */
.blog-hero {
  padding: var(--space-16, 4rem) 0 var(--space-8, 2rem);
  border-bottom: 1px solid var(--color-border, rgba(0,0,0,0.08));
}

.blog-hero-title {
  font-family: var(--font-display, 'Outfit', sans-serif);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

.blog-hero-subtitle {
  font-size: 1.125rem;
  color: var(--color-muted, #6b7280);
  margin: 0;
}

/* ── Category filter tabs ───────────────────────────────────── */
.category-tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  padding: var(--space-6, 1.5rem) 0;
  border-bottom: 1px solid var(--color-border, rgba(0,0,0,0.08));
  margin-bottom: var(--space-8, 2rem);
}

.category-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.875rem;
  border-radius: 2rem;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid var(--color-border, rgba(0,0,0,0.12));
  color: var(--color-muted, #6b7280);
  background: transparent;
  transition: all 0.18s ease;
  cursor: pointer;
}

.category-tab:hover {
  border-color: var(--color-accent, #7c3aed);
  color: var(--color-accent, #7c3aed);
  background: var(--color-accent-subtle, rgba(124,58,237,0.06));
}

.category-tab.active,
.category-tab[aria-current="page"] {
  background: var(--color-accent, #7c3aed);
  border-color: var(--color-accent, #7c3aed);
  color: #fff;
}

.category-tab-count {
  font-size: 0.75rem;
  opacity: 0.75;
}

/* ── Blog grid ──────────────────────────────────────────────── */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
  gap: 1.5rem;
  padding-bottom: var(--space-16, 4rem);
}

/* ── Blog card ──────────────────────────────────────────────── */
.blog-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface, #fff);
  border: 1px solid var(--color-border, rgba(0,0,0,0.08));
  border-radius: 12px;
  padding: 1.5rem;
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
  height: 100%;
}

.blog-card:hover {
  box-shadow: 0 8px 30px rgba(0,0,0,0.08);
  transform: translateY(-2px);
  border-color: var(--color-accent, #7c3aed);
}

.blog-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.blog-card-category {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  background: var(--color-accent-subtle, rgba(124,58,237,0.08));
  color: var(--color-accent, #7c3aed);
}

.blog-card-featured-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  background: var(--color-warning-subtle, rgba(245,158,11,0.1));
  color: var(--color-warning, #d97706);
  letter-spacing: 0.05em;
}

.blog-card-title {
  font-family: var(--font-display, 'Outfit', sans-serif);
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.3;
  margin: 0 0 0.625rem;
  color: var(--color-text, #111);
}

.blog-card-description {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-muted, #6b7280);
  margin: 0 0 1.25rem;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--color-muted, #9ca3af);
  border-top: 1px solid var(--color-border, rgba(0,0,0,0.06));
  padding-top: 1rem;
  margin-top: auto;
}

.blog-card-date {
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.blog-card-read-time {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.blog-card-read-more {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-accent, #7c3aed);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  transition: gap 0.15s ease;
}

.blog-card:hover .blog-card-read-more {
  gap: 0.5rem;
}

/* ── No posts state ─────────────────────────────────────────── */
.blog-empty {
  padding: 4rem 0;
  text-align: center;
  color: var(--color-muted, #9ca3af);
  font-size: 1rem;
}

/* ── Article / blog post page ───────────────────────────────── */
.article-back {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.875rem;
  color: var(--color-muted, #6b7280);
  text-decoration: none;
  padding: var(--space-6, 1.5rem) 0 0;
  transition: color 0.15s ease;
}

.article-back:hover {
  color: var(--color-accent, #7c3aed);
}

.article-header {
  padding: var(--space-8, 2rem) 0 var(--space-6, 1.5rem);
  border-bottom: 1px solid var(--color-border, rgba(0,0,0,0.08));
  margin-bottom: var(--space-8, 2rem);
}

.article-header-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.article-category {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  background: var(--color-accent-subtle, rgba(124,58,237,0.08));
  color: var(--color-accent, #7c3aed);
}

.article-date, .article-read-time {
  font-size: 0.85rem;
  color: var(--color-muted, #9ca3af);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.article-sep {
  color: var(--color-border, #d1d5db);
}

.article-title {
  font-family: var(--font-display, 'Outfit', sans-serif);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
  color: var(--color-text, #111);
}

.article-description {
  font-size: 1.125rem;
  line-height: 1.65;
  color: var(--color-muted, #6b7280);
  margin: 0;
  max-width: 68ch;
}

/* ── Article body prose ─────────────────────────────────────── */
.prose {
  max-width: 70ch;
  margin: 0 auto;
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--color-text, #1f2937);
  font-family: 'Inter', system-ui, sans-serif;
}

.prose h2 {
  font-family: var(--font-display, 'Outfit', sans-serif);
  font-size: 1.875rem;
  font-weight: 700;
  margin: 3.5rem 0 1.25rem;
  letter-spacing: -0.02em;
  color: var(--color-text, #111);
  line-height: 1.2;
}

.prose h3 {
  font-family: var(--font-display, 'Outfit', sans-serif);
  font-size: 1.375rem;
  font-weight: 600;
  margin: 2.5rem 0 1rem;
  color: var(--color-text, #111);
  letter-spacing: -0.01em;
}

.prose p {
  margin: 0 0 1.5rem;
}

.prose ul, .prose ol {
  margin: 0 0 1.5rem 1.5rem;
}

.prose li {
  margin-bottom: 0.5rem;
}

.prose strong {
  font-weight: 600;
  color: var(--color-text, #111);
}

.prose a {
  color: var(--color-accent, #7c3aed);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.prose a:hover {
  text-decoration-thickness: 2px;
}

.prose blockquote {
  border-left: 3px solid var(--color-accent, #7c3aed);
  margin: 1.5rem 0;
  padding: 0.5rem 0 0.5rem 1.25rem;
  color: var(--color-muted, #6b7280);
  font-style: italic;
}

.prose code {
  font-size: 0.875em;
  background: var(--color-code-bg, rgba(0,0,0,0.05));
  padding: 0.15em 0.4em;
  border-radius: 4px;
}

.prose pre {
  background: var(--color-code-bg, #1e1e2e);
  color: #cdd6f4;
  padding: 1.25rem 1.5rem;
  border-radius: 8px;
  overflow-x: auto;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}

.prose pre code {
  background: none;
  padding: 0;
}

.prose hr {
  border: none;
  border-top: 1px solid var(--color-border, rgba(0,0,0,0.08));
  margin: 2.5rem 0;
}

/* ── Article images ─────────────────────────────────────────── */
.article-image {
  margin: 2.5rem 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.625rem;
}

.article-image img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--color-border, rgba(0,0,0,0.08));
  box-shadow: 0 4px 20px rgba(0,0,0,0.04);
}

[data-color-scheme="dark"] .article-image img {
  border-color: rgba(255,255,255,0.08);
  box-shadow: 0 4px 20px rgba(0,0,0,0.25);
}

.image-caption {
  font-size: 0.85rem;
  color: var(--color-muted, #6b7280);
  text-align: center;
  max-width: 90%;
  line-height: 1.4;
  font-style: italic;
}

/* ── Tags ───────────────────────────────────────────────────── */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border, rgba(0,0,0,0.08));
}

.article-tag {
  font-size: 0.8rem;
  padding: 0.25rem 0.625rem;
  border-radius: 4px;
  background: var(--color-surface-alt, rgba(0,0,0,0.04));
  color: var(--color-muted, #6b7280);
  font-weight: 500;
}

/* ── Dark mode overrides ────────────────────────────────────── */
[data-color-scheme="dark"] .blog-card {
  background: var(--color-surface-dark, rgba(255,255,255,0.04));
  border-color: rgba(255,255,255,0.08);
}

[data-color-scheme="dark"] .blog-card:hover {
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}

[data-color-scheme="dark"] .article-tag {
  background: rgba(255,255,255,0.06);
}

[data-color-scheme="dark"] .prose code {
  background: rgba(255,255,255,0.07);
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 640px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }
  .category-tabs {
    gap: 0.375rem;
  }
}