/* ============================
   Blog Hub & Article Styles
   ============================ */

/* Hub Hero */
.blog-hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 120px 24px 48px;
  text-align: center;
}
.blog-hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}
.blog-hero p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 620px;
  margin: 0 auto;
}

/* Category Filter */
.blog-filters {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  max-width: var(--max-width);
  margin: 0 auto 48px;
  padding: 0 24px;
}
.blog-filter-btn {
  padding: 8px 20px;
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 500;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  background: transparent;
  transition: var(--transition);
  cursor: pointer;
}
.blog-filter-btn:hover,
.blog-filter-btn.active {
  background: var(--text-primary);
  color: var(--bg-primary);
  border-color: var(--text-primary);
}

/* Card Grid */
.blog-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 80px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}
.blog-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-light);
  transform: translateY(-2px);
}
.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.blog-card-category {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
}
.blog-card-time {
  font-size: 0.75rem;
  color: var(--text-muted);
}
.blog-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.blog-card h3 a {
  transition: color var(--transition);
}
.blog-card h3 a:hover {
  color: var(--text-secondary);
}
.blog-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  flex: 1;
  margin-bottom: 16px;
}
.blog-card-date {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: auto;
}

/* Section headings on hub */
.blog-section-title {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 24px;
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

/* ============================
   Article Page
   ============================ */
.blog-article {
  max-width: 720px;
  margin: 0 auto;
  padding: 120px 24px 80px;
}
.blog-article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.blog-article-category {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  padding: 4px 12px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 100px;
}
.blog-article-date {
  font-size: 0.85rem;
  color: var(--text-muted);
}
.blog-article-reading {
  font-size: 0.85rem;
  color: var(--text-muted);
}
.blog-article h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 32px;
}
.blog-article h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-top: 48px;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.blog-article h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-top: 32px;
  margin-bottom: 12px;
}
.blog-article h4 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-top: 24px;
  margin-bottom: 10px;
}
.blog-article p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.75;
  margin-bottom: 20px;
}
.blog-article ul,
.blog-article ol {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.75;
  margin-bottom: 20px;
  padding-left: 24px;
}
.blog-article li {
  margin-bottom: 8px;
}
.blog-article blockquote {
  border-left: 3px solid var(--text-primary);
  padding: 16px 24px;
  margin: 28px 0;
  background: var(--accent-dim);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.blog-article blockquote p {
  color: var(--text-primary);
  font-style: italic;
  margin-bottom: 0;
}
.blog-article table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.95rem;
}
.blog-article th,
.blog-article td {
  text-align: left;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
}
.blog-article th {
  background: var(--bg-card);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.blog-article td {
  color: var(--text-secondary);
}
.blog-article strong {
  color: var(--text-primary);
  font-weight: 600;
}
.blog-article em {
  font-style: italic;
}
.blog-article code {
  font-family: var(--mono);
  background: var(--bg-card);
  padding: 2px 8px;
  border-radius: var(--radius-xs);
  font-size: 0.9em;
}
.blog-article a {
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.blog-article a:hover {
  color: var(--text-secondary);
}

/* Back to blog link */
.blog-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  transition: color var(--transition);
}
.blog-back:hover {
  color: var(--text-primary);
}

/* CTA at end of article */
.blog-cta {
  margin-top: 64px;
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  text-align: center;
}
.blog-cta h3 {
  margin-top: 0;
  margin-bottom: 12px;
  font-size: 1.3rem;
}
.blog-cta p {
  margin-bottom: 24px;
  font-size: 1rem;
}
.blog-cta .btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  background: var(--text-primary);
  color: var(--bg-primary);
  transition: var(--transition);
}
.blog-cta .btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* ============================
   Responsive
   ============================ */
@media (max-width: 900px) {
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 600px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }
  .blog-hero {
    padding: 100px 20px 32px;
  }
  .blog-article {
    padding: 100px 20px 60px;
  }
}