/* ============================================
   LUNAPLE-EN BLOG
   Blog-only styles. Inherits design tokens from common.css.
   Do NOT duplicate tokens here — reference the :root vars.
   ============================================ */

/* --- Blog header / hero --- */
.blog-header {
  text-align: center;
  padding: var(--space-2xl) var(--space-md) var(--space-lg);
  position: relative;
  z-index: 1;
}
.blog-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 7vw, 2.75rem);
  font-weight: 600;
  margin: 0 0 var(--space-sm);
  color: var(--text-primary);
}
.blog-header p {
  color: var(--text-secondary);
  max-width: 440px;
  margin: 0 auto;
  font-size: 0.95rem;
  line-height: 1.6;
}

/* --- Language category filter --- */
.blog-lang-filter {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0 var(--space-md) var(--space-lg);
  max-width: 560px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.blog-lang-tab {
  appearance: none;
  border: 1px solid var(--border-glass);
  background: var(--bg-glass-solid);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.18s ease;
  white-space: nowrap;
}
.blog-lang-tab:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
}
.blog-lang-tab.active {
  background: var(--gradient-cta);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 4px 14px rgba(91, 168, 168, 0.25);
}

/* --- Post grid --- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-md);
  max-width: 920px;
  margin: 0 auto;
  padding: 0 var(--space-md) var(--space-2xl);
  position: relative;
  z-index: 1;
}

.blog-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-glass-solid);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.blog-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(26, 43, 46, 0.10);
  border-color: var(--border-hover);
  color: inherit;
}

/* Thumbnail placeholder — gradient wash by language, NO emoji/shape */
.blog-card-thumb {
  aspect-ratio: 16 / 9;
  width: 100%;
  display: flex;
  align-items: flex-end;
  padding: var(--space-md);
  background: var(--gradient-mesh), var(--bg-surface-2);
  position: relative;
}
.blog-card-thumb[data-lang="en"] { background: linear-gradient(135deg, rgba(91,168,168,0.16), rgba(158,141,192,0.16)), var(--bg-surface-2); }
.blog-card-thumb[data-lang="ja"] { background: linear-gradient(135deg, rgba(184,102,138,0.16), rgba(158,141,192,0.16)), var(--bg-surface-2); }
.blog-card-thumb[data-lang="es"] { background: linear-gradient(135deg, rgba(201,162,39,0.16), rgba(91,168,168,0.16)), var(--bg-surface-2); }
.blog-card-thumb[data-lang="pt"] { background: linear-gradient(135deg, rgba(91,168,168,0.18), rgba(201,162,39,0.14)), var(--bg-surface-2); }
.blog-card-thumb[data-lang="fr"] { background: linear-gradient(135deg, rgba(158,141,192,0.18), rgba(184,102,138,0.14)), var(--bg-surface-2); }

.blog-card-thumb-tag {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-primary);
  background: var(--bg-glass-solid);
  border: 1px solid var(--border-glass);
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.blog-card-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding: var(--space-md);
  flex: 1;
}
.blog-card-cat {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-primary);
}
.blog-card-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.25;
  color: var(--text-primary);
  margin: 0;
}
.blog-card-excerpt {
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--text-secondary);
  margin: 0;
  flex: 1;
}
.blog-card-date {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: var(--space-xs);
}

.blog-empty {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--text-muted);
  padding: var(--space-2xl) 0;
  font-size: 0.95rem;
}

/* ============================================
   INDIVIDUAL POST (article) — blog/{lang}-{slug}.html
   ============================================ */
.post-wrap {
  max-width: 680px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md) var(--space-3xl);
  position: relative;
  z-index: 1;
}
.post-breadcrumb {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}
.post-breadcrumb a { color: var(--text-secondary); text-decoration: none; }
.post-breadcrumb a:hover { color: var(--color-primary); }

.post-cat {
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}
.post-title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 6vw, 2.6rem);
  font-weight: 600;
  line-height: 1.18;
  color: var(--text-primary);
  margin: 0 0 var(--space-sm);
}
.post-meta {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border-glass);
}

.post-hero {
  aspect-ratio: 16 / 9;
  width: 100%;
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-lg);
  background: linear-gradient(135deg, rgba(91,168,168,0.16), rgba(158,141,192,0.16)), var(--bg-surface-2);
}

/* Hero illustration — full image, never cropped */
.post-hero-img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-lg);
  display: block;
}

/* Inline body illustrations — multiple scene figures per article */
.post-figure {
  margin: var(--space-lg) 0;
}
.post-figure img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  display: block;
}
.post-figure figcaption {
  margin-top: var(--space-sm);
  font-size: 0.82rem;
  color: var(--text-muted);
  text-align: center;
  font-style: italic;
}

.post-body { color: var(--text-primary); }
.post-body p {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-primary);
  margin: 0 0 var(--space-md);
}
.post-body h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: var(--space-lg) 0 var(--space-sm);
}
.post-body a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.post-body a:hover { color: var(--color-tertiary); }

/* Source citation block (required — Lunaple no-AI-improvisation rule) */
.post-source {
  margin-top: var(--space-lg);
  padding: var(--space-md);
  background: var(--color-primary-dim);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  line-height: 1.55;
  color: var(--text-secondary);
}
.post-source strong { color: var(--text-primary); }

/* Internal CTA to related service */
.post-cta {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-top: var(--space-xl);
  padding: var(--space-lg);
  background: var(--bg-surface-2);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  text-align: center;
}
.post-cta-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-primary);
}
.post-cta p { color: var(--text-secondary); font-size: 0.9rem; margin: 0 0 var(--space-sm); }
/* CTA is an <a> styled as a button; the global a{color} rule would tint the
   label mint on the mint gradient. Force white for contrast. */
.post-cta .btn-primary,
.post-cta .btn-primary:hover { color: #fff; font-weight: 600; }

.post-disclaimer {
  margin-top: var(--space-lg);
  font-size: 0.7rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.5;
}

.post-back {
  display: inline-block;
  margin-top: var(--space-xl);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
}
.post-back:hover { color: var(--color-tertiary); }

/* --- Mobile (≤480px) --- */
@media (max-width: 480px) {
  .blog-grid { grid-template-columns: 1fr; gap: var(--space-md); }
  .blog-lang-filter { gap: 6px; }
  .blog-lang-tab { padding: 7px 13px; font-size: 0.8rem; }
  /* Solid backgrounds on mobile (perf — no backdrop-filter) */
  .blog-card, .blog-lang-tab { background: var(--bg-surface-1); }
}

/* ============================================
   TAG ROW + RELATED READING (blog-autopublish additions)
   2–3 tags only (many tags hurt SEO); internal links for discovery.
   No emoji, no CSS shapes — inherits mint/gold tokens from common.css.
   ============================================ */

/* Tag row — small non-link chips under the source citation */
.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-md);
}
.post-tag {
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-primary);
  background: var(--color-primary-dim);
  border: 1px solid var(--border-glass);
  padding: 5px 12px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

/* Related reading — internal links to sibling articles */
.post-related {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-glass);
}
.post-related-title {
  font-family: var(--font-body);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-secondary);
  margin-bottom: var(--space-sm);
}
.post-related-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}
.post-related-list li { margin: 0; }
.post-related-list a {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-primary);
  text-decoration: none;
}
.post-related-list a:hover { color: var(--color-tertiary); text-decoration: underline; text-underline-offset: 2px; }