/* ═══════════════════════════════════════
   Blog styles — listing + post pages
   ═══════════════════════════════════════ */

/* ── Filters ── */
.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.filter-btn {
  padding: 0.4rem 1rem;
  border-radius: 20px;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1.5px solid var(--border-light);
  background: var(--white);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
}

.filter-btn:hover {
  border-color: var(--teal-text);
  color: var(--teal-text);
}

.filter-btn.active {
  background: var(--teal);
  border-color: var(--teal);
  color: var(--white);
}

/* ── Card grid ── */
.blog-grid {
  display: grid;
  gap: 1.75rem;
}

.blog-card {
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 2rem 2.25rem;
  transition: transform 0.22s, box-shadow 0.22s;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.5rem;
  align-items: start;
}

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

.blog-card-body { min-width: 0; }

.blog-card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.65rem;
}

/* ── Tags ── */
.blog-tag {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  border-radius: 12px;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.blog-tag--data {
  background: rgba(42, 157, 143, 0.1);
  color: var(--teal-text);
}

.blog-tag--field {
  background: rgba(143, 109, 30, 0.1);
  color: var(--gold);
}

.blog-tag--guide {
  background: rgba(62, 68, 82, 0.08);
  color: var(--text-body);
}

.blog-date {
  font-size: 0.76rem;
  color: var(--text-muted);
}

.blog-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.35;
  margin-bottom: 0.5rem;
}

.blog-card h3 a { transition: color 0.2s; }
.blog-card h3 a:hover { color: var(--teal-text); }

.blog-excerpt {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 0.75rem;
}

.blog-read-more {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--teal-text);
  transition: gap 0.2s;
}

.blog-read-more:hover { gap: 0.6rem; }

.blog-card-aside {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.35rem;
  padding-top: 0.25rem;
}

.blog-read-time {
  font-size: 0.72rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ── Coming soon ── */
.blog-coming-soon {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.blog-coming-soon p {
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ═══════════════════════════════════════
   Individual post page
   ═══════════════════════════════════════ */

.post-header {
  padding: calc(var(--nav-h) + clamp(2.5rem,5vw,4rem)) 0 clamp(1.5rem,3vw,2.5rem);
  background: var(--navy);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.post-header::before {
  content: '';
  position: absolute; top: -40%; right: -20%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(42,157,143,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.post-meta-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
  opacity: 0; animation: riseIn 0.5s 0.1s forwards;
}

.post-tag {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  border-radius: 12px;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: rgba(42, 157, 143, 0.2);
  color: var(--teal-light);
}

.post-meta-date {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
}

.post-header h1 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.5vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  max-width: 740px;
  opacity: 0; animation: riseIn 0.5s 0.22s forwards;
}

.post-meta-bottom {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
  opacity: 0; animation: riseIn 0.5s 0.34s forwards;
}

.post-author {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.post-author-avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--teal);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem; font-weight: 700;
  color: var(--white);
}

.post-author-name {
  color: rgba(255,255,255,0.75);
  font-weight: 500;
}

/* ── Article body ── */
.post-body {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--section-py) var(--page-px);
}

.post-body p {
  font-size: 1.05rem;
  line-height: 1.9;
  margin-bottom: 1.5rem;
  color: var(--text-body);
}

.post-body p:first-of-type {
  font-size: 1.15rem;
  color: var(--text-primary);
}

.post-body h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  line-height: 1.3;
}

.post-body blockquote {
  border-left: 3px solid var(--teal);
  margin: 2rem 0;
  padding: 1rem 1.5rem;
  background: var(--teal-pale);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--text-primary);
  line-height: 1.7;
}

/* ── Post footer ── */
.post-footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 var(--page-px) 3rem;
  border-top: 1px solid var(--border-light);
  padding-top: 2rem;
}

.post-footer-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.post-footer-tag {
  padding: 0.3rem 0.85rem;
  border-radius: 16px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--cream-mid);
  color: var(--text-muted);
}

.post-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.post-nav a {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--teal-text);
  transition: color 0.2s;
}

.post-nav a:hover { color: var(--teal-dark); }

/* ── Responsive ── */
@media (max-width: 700px) {
  .blog-card {
    grid-template-columns: 1fr;
  }
  .blog-card-aside {
    flex-direction: row;
    align-items: center;
  }
}