/* ═══════════════════════════════════════════════════════════════
   BLOG PAGE STYLES
   ═══════════════════════════════════════════════════════════════ */

.blog-header {
  padding-top: calc(var(--nav-height) + var(--space-2xl));
  padding-bottom: var(--space-xl);
}

.blog-filters {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-top: var(--space-lg);
}

.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.5rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
}

.filter-btn:hover {
  border-color: var(--accent-cyan);
  color: var(--text-primary);
}

.filter-btn.active {
  background: rgba(56, 189, 248, 0.08);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

/* ── Blog Grid ─────────────────────────────────────────────── */
.blog-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.blog-card {
  display: flex;
  flex-direction: column;
}

.blog-card .card {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.blog-card-image {
  width: 100%;
  height: 200px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  margin: calc(var(--space-lg) * -1);
  margin-bottom: var(--space-lg);
  width: calc(100% + var(--space-lg) * 2);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.blog-card-image .pattern {
  position: absolute;
  inset: 0;
  opacity: 0.15;
}

.blog-card-image .icon {
  font-size: 2rem;
  z-index: 1;
  position: relative;
}

.blog-card .blog-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
}

.blog-card .blog-date {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
}

.blog-card .blog-read-time {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}

.blog-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
  line-height: 1.4;
  transition: color 0.3s ease;
}

.blog-card:hover h3 {
  color: var(--accent-cyan);
}

.blog-card .blog-excerpt {
  font-family: var(--font-serif);
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.75;
  flex: 1;
}

.blog-card .blog-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: var(--space-md);
}

.blog-card .read-more {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  margin-top: var(--space-md);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: gap 0.3s ease;
}

.blog-card:hover .read-more {
  gap: 0.8rem;
}

/* ── Featured Post ─────────────────────────────────────────── */
.blog-featured {
  grid-column: 1 / -1;
}

.blog-featured .card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.blog-featured .blog-card-image {
  width: 100%;
  height: 100%;
  min-height: 300px;
  margin: 0;
  border-radius: 3px;
  border-bottom: none;
}

.blog-featured .featured-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-amber);
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.blog-featured .featured-badge::before {
  content: '★';
}

.blog-featured h3 {
  font-size: 1.5rem;
}

/* ── Newsletter ────────────────────────────────────────────── */
.newsletter-section {
  margin-top: var(--space-2xl);
  padding: var(--space-xl);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  text-align: center;
}

.newsletter-section .section-label {
  justify-content: center;
}

.newsletter-section .section-subtitle {
  margin: var(--space-sm) auto var(--space-lg);
}

.newsletter-form {
  display: flex;
  gap: var(--space-sm);
  max-width: 480px;
  margin: 0 auto;
}

.newsletter-form input {
  flex: 1;
  padding: 0.85rem 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 2px;
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.3s ease;
}

.newsletter-form input::placeholder {
  color: var(--text-muted);
}

.newsletter-form input:focus {
  border-color: var(--accent-cyan);
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 768px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }

  .blog-featured .card {
    grid-template-columns: 1fr;
  }

  .blog-featured .blog-card-image {
    min-height: 200px;
  }

  .newsletter-form {
    flex-direction: column;
  }
}