/* ============================================================
   BioinformaticsNext — Blog styles (extends assets/css/main.css tokens)
   Self-contained: only affects /blog/ pages.
   ============================================================ */

/* ---- Listing grid ---- */
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
@media (max-width: 900px) { .blog-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .blog-grid { grid-template-columns: 1fr; } }

.post-card { display: flex; flex-direction: column; background: var(--bg-raised); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden; height: 100%; transition: border-color .18s ease, transform .18s ease, box-shadow .18s ease; }
.post-card:hover { border-color: var(--signal); transform: translateY(-2px); box-shadow: 0 12px 30px -18px rgba(15,27,45,.35); }
.post-card a.post-card-link { text-decoration: none; color: inherit; display: flex; flex-direction: column; height: 100%; }
.post-card-media { aspect-ratio: 16 / 9; background: var(--bg-sunken); border-bottom: 1px solid var(--border); overflow: hidden; }
.post-card-media svg, .post-card-media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.post-card-body { padding: var(--space-5); display: flex; flex-direction: column; gap: .55rem; flex: 1; }
.post-card-cat { font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: .06em; text-transform: uppercase; color: var(--signal-ink); }
.post-card-title { font-family: var(--font-display); font-size: 1.16rem; line-height: 1.25; color: var(--text-primary); margin: 0; }
.post-card-excerpt { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.5; }
.post-card-meta { margin-top: auto; padding-top: .5rem; font-family: var(--font-mono); font-size: 0.72rem; color: var(--gray-500); display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; }
.post-card-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--gray-400); display: inline-block; }

.blog-empty { text-align: center; padding: var(--space-8); color: var(--text-secondary); }

/* ---- Article ---- */
.article-shell { max-width: 46rem; margin: 0 auto; }
.article-head { margin-bottom: var(--space-6); }
.article-cat { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: .06em; text-transform: uppercase; color: var(--signal-ink); }
.article-title { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.9rem, 4vw, 2.7rem); line-height: 1.1; margin: .5rem 0 0; color: var(--ink); }
.article-meta { margin-top: var(--space-4); font-family: var(--font-mono); font-size: 0.78rem; color: var(--gray-500); display: flex; gap: .55rem; flex-wrap: wrap; align-items: center; }
.article-hero-media { aspect-ratio: 16 / 8; background: var(--bg-sunken); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; margin: var(--space-6) 0; }
.article-hero-media svg, .article-hero-media img { width: 100%; height: 100%; object-fit: cover; display: block; }

.article-toc { background: var(--bg-sunken); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--space-5) var(--space-6); margin: var(--space-6) 0; }
.article-toc p { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: .05em; text-transform: uppercase; color: var(--text-secondary); margin: 0 0 .5rem; }
.article-toc ol { margin: 0; padding-left: 1.1rem; display: flex; flex-direction: column; gap: .3rem; }
.article-toc a { color: var(--signal-ink); text-decoration: none; font-size: 0.9rem; }
.article-toc a:hover { text-decoration: underline; }

.article-body { font-size: 1.02rem; line-height: 1.75; color: var(--text-primary); }
.article-body > p { margin: 0 0 1.15rem; }
.article-body h2 { font-family: var(--font-display); font-weight: 600; font-size: 1.6rem; line-height: 1.2; margin: 2.2rem 0 .8rem; color: var(--ink); scroll-margin-top: 90px; }
.article-body h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.22rem; margin: 1.6rem 0 .6rem; color: var(--ink); scroll-margin-top: 90px; }
.article-body ul, .article-body ol { margin: 0 0 1.15rem; padding-left: 1.3rem; display: flex; flex-direction: column; gap: .4rem; }
.article-body li { line-height: 1.65; }
.article-body a { color: var(--signal-ink); text-decoration: underline; text-underline-offset: 2px; }
.article-body a:hover { color: var(--signal); }
.article-body blockquote { margin: 1.4rem 0; padding: .9rem 1.3rem; border-left: 3px solid var(--signal); background: var(--bg-sunken); border-radius: 0 var(--radius) var(--radius) 0; color: var(--text-secondary); font-style: italic; }
.article-body code { font-family: var(--font-mono); font-size: 0.88em; background: var(--bg-sunken); padding: .12em .4em; border-radius: 5px; border: 1px solid var(--border); }
.article-body pre { background: var(--ink); color: #E8EDF5; border-radius: var(--radius-lg); padding: var(--space-5); overflow-x: auto; margin: 0 0 1.15rem; font-family: var(--font-mono); font-size: 0.82rem; line-height: 1.6; }
.article-body pre code { background: none; border: none; padding: 0; color: inherit; }
.article-body figure { margin: 1.6rem 0; }
.article-body figure figcaption { font-family: var(--font-mono); font-size: 0.74rem; color: var(--gray-500); margin-top: .5rem; text-align: center; }
.article-body .key-takeaways { background: var(--bg-sunken); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--space-5) var(--space-6); margin: var(--space-6) 0; }
.article-body .key-takeaways h2 { margin-top: 0; font-size: 1.2rem; }

.article-tags { display: flex; flex-wrap: wrap; gap: .5rem; margin: var(--space-6) 0; }
.article-tags .tag-chip { font-family: var(--font-mono); font-size: 0.72rem; padding: .3rem .7rem; border: 1px solid var(--border); border-radius: 999px; color: var(--text-secondary); background: var(--bg-raised); }

.article-cta { background: var(--bg-sunken); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--space-6); margin: var(--space-6) 0; text-align: center; }
.article-cta h3 { font-family: var(--font-display); font-size: 1.3rem; margin: 0 0 .4rem; }
.article-cta p { color: var(--text-secondary); margin: 0 0 var(--space-4); }