/* ==========================================================================
   Blog Listing
   Hero, featured post, post grid, category filters, pagination
   ========================================================================== */

/* Blog header */
.blog-header {
  padding: var(--space-10) 0 var(--space-6);
  background: linear-gradient(180deg, var(--color-light-blue) 0%, var(--color-white) 100%);
  border-bottom: 1px solid var(--color-border);
  text-align: center;
}

.blog-header h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: var(--weight-bold);
  color: var(--color-dark);
  margin: 0 0 var(--space-3);
  letter-spacing: -0.02em;
}

.blog-header p {
  font-size: var(--text-lg);
  color: var(--color-dark-muted);
  line-height: var(--leading-relaxed);
  max-width: 640px;
  margin: 0 auto;
}

/* Blog body */
.blog-body {
  padding: var(--space-8) 0;
}

/* Category filter tabs */
.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
  margin-bottom: var(--space-8);
}

.blog-filter-btn {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  color: var(--color-dark-muted);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.blog-filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

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

/* Featured post */
.blog-featured {
  margin-bottom: var(--space-8);
}

.blog-featured-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
  text-decoration: none;
}

.blog-featured-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
}

.blog-featured-media {
  aspect-ratio: 16 / 10;
  background: var(--color-light-blue);
  overflow: hidden;
}

.blog-featured-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.blog-featured-body {
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.blog-featured-badge {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: var(--color-light-blue);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-3);
  align-self: flex-start;
}

.blog-featured-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: var(--weight-bold);
  color: var(--color-dark);
  line-height: 1.25;
  margin: 0 0 var(--space-3);
  letter-spacing: -0.01em;
}

.blog-featured-excerpt {
  font-size: var(--text-base);
  color: var(--color-dark-muted);
  line-height: var(--leading-relaxed);
  margin: 0 0 var(--space-4);
}

.blog-featured-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-dark-subtle);
}

/* Blog post grid */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-5);
  margin-bottom: var(--space-8);
}

/* Blog card */
.blog-card {
  display: flex;
  flex-direction: column;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
  text-decoration: none;
  height: 100%;
}

.blog-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.blog-card-media {
  aspect-ratio: 16 / 9;
  background: var(--color-light-blue);
  overflow: hidden;
}

.blog-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.blog-card:hover .blog-card-media img {
  transform: scale(1.04);
}

.blog-card-body {
  padding: var(--space-5);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.blog-card-category {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
}

.blog-card-title {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--color-dark);
  line-height: 1.35;
  margin: 0 0 var(--space-2);
}

.blog-card-excerpt {
  font-size: var(--text-sm);
  color: var(--color-dark-muted);
  line-height: var(--leading-relaxed);
  flex-grow: 1;
  margin: 0 0 var(--space-4);
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-dark-subtle);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}

/* Empty blog state */
.blog-empty {
  padding: var(--space-12) var(--space-5);
  text-align: center;
  background: var(--color-off-white);
  border-radius: var(--radius-lg);
  color: var(--color-dark-muted);
}

/* Responsive */
@media (max-width: 767px) {
  .blog-header { padding: var(--space-6) 0 var(--space-4); }
  .blog-header p { font-size: var(--text-base); }
  .blog-body { padding: var(--space-6) 0; }
  .blog-featured-card { grid-template-columns: 1fr; }
  .blog-featured-body { padding: var(--space-5); }
  .blog-grid { grid-template-columns: 1fr; gap: var(--space-4); }
  .blog-card-body { padding: var(--space-4); }
}

@media (prefers-reduced-motion: reduce) {
  .blog-card,
  .blog-featured-card { transition: none; }
  .blog-card:hover { transform: none; }
  .blog-card:hover .blog-card-media img { transform: none; }
}