/* === BLOG SECTION === */

.blog-main {
  padding-top: 80px; /* nav height */
}

/* Blog list hero */
.blog-header {
  background: var(--navy);
  padding: 80px 24px 72px;
  border-bottom: 1px solid rgba(99, 209, 218, 0.08);
}

.blog-hero-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  line-height: 1.15;
}

.blog-hero-sub {
  font-size: 1.05rem;
  color: var(--gray-400);
  max-width: 540px;
  line-height: 1.65;
}

/* Blog content area */
.blog-content {
  padding: 64px 0 80px;
}

/* Article grid */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 64px;
}

/* Blog card */
.blog-card {
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.blog-card:hover {
  border-color: var(--teal);
  box-shadow: 0 8px 28px rgba(0, 167, 181, 0.08);
  transform: translateY(-2px);
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--gray-400);
  font-weight: 500;
}

.blog-card-sep {
  color: var(--gray-200);
}

.blog-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.3;
  flex: 1;
}

.blog-card-title a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s;
}

.blog-card-title a:hover {
  color: var(--teal);
}

.blog-card-excerpt {
  font-size: 0.88rem;
  color: var(--gray-400);
  line-height: 1.6;
  flex: 1;
}

.blog-card-cta {
  font-family: 'Poppins', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--teal);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s;
}

.blog-card-cta:hover {
  gap: 8px;
}

/* CTA Banner */
.blog-cta-banner {
  background: var(--navy);
  border-radius: var(--radius);
  padding: 40px 32px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.blog-cta-banner p {
  font-family: 'Poppins', sans-serif;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--white);
}

.btn-primary {
  display: inline-block;
  font-family: 'Poppins', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--navy);
  background: linear-gradient(135deg, var(--teal), var(--teal-light));
  padding: 13px 28px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  box-shadow: 0 4px 16px rgba(0, 167, 181, 0.3);
  transition: all 0.2s;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 167, 181, 0.4);
}

/* === ARTICLE PAGE === */

.article-main {
  padding-top: 80px;
}

.article-header {
  background: var(--navy);
  padding: 64px 24px 56px;
  border-bottom: 1px solid rgba(99, 209, 218, 0.08);
}

.article-back {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--teal-light);
  text-decoration: none;
  margin-bottom: 20px;
  transition: color 0.2s;
}

.article-back:hover {
  color: var(--teal);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.article-tag {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--teal);
  background: rgba(0, 167, 181, 0.1);
  padding: 4px 12px;
  border-radius: 100px;
  border: 1px solid rgba(0, 167, 181, 0.2);
}

.article-title {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 20px;
  max-width: 760px;
}

.article-byline {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--gray-400);
  font-weight: 500;
}

.article-sep {
  color: rgba(139, 148, 158, 0.4);
}

/* Article body layout */
.article-body-wrapper {
  padding: 64px 0 80px;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 64px;
  align-items: start;
}

/* Article content typography */
.article-content {
  max-width: 680px;
}

.article-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--navy);
  margin: 40px 0 16px;
  letter-spacing: -0.01em;
}

.article-content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--navy);
  margin: 28px 0 12px;
}

.article-content p {
  font-size: 1.0rem;
  color: var(--charcoal);
  line-height: 1.75;
  margin-bottom: 18px;
}

.article-content strong {
  font-weight: 600;
  color: var(--navy);
}

.article-content ul,
.article-content ol {
  margin: 16px 0 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.article-content li {
  font-size: 0.95rem;
  color: var(--charcoal);
  line-height: 1.65;
}

.article-content a {
  color: var(--teal);
  text-decoration: underline;
  text-decoration-color: rgba(0, 167, 181, 0.4);
  text-underline-offset: 3px;
  transition: text-decoration-color 0.2s;
}

.article-content a:hover {
  text-decoration-color: var(--teal);
}

/* Article CTA */
.article-cta {
  background: var(--navy);
  border-radius: var(--radius);
  padding: 32px 28px;
  text-align: center;
  margin-top: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.article-cta p {
  font-family: 'Poppins', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0;
}

.article-cta .btn-primary {
  font-size: 0.9rem;
  padding: 14px 32px;
}

/* Article sidebar */
.article-sidebar {
  position: sticky;
  top: 96px;
}

.sidebar-card {
  background: var(--gray-100);
  border-radius: var(--radius);
  padding: 28px 24px;
  border: 1px solid var(--gray-200);
}

.sidebar-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 12px;
}

.sidebar-card p {
  font-size: 0.88rem;
  color: var(--gray-400);
  line-height: 1.6;
  margin-bottom: 16px;
}

.sidebar-card a {
  font-family: 'Poppins', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--teal);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s;
}

.sidebar-card a:hover {
  gap: 8px;
}

/* Related articles */
.related-articles {
  background: var(--gray-100);
  border-top: 1px solid var(--gray-200);
  padding: 64px 0;
}

.related-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 32px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.related-card {
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.related-card:hover {
  border-color: var(--teal);
  box-shadow: 0 6px 20px rgba(0, 167, 181, 0.06);
}

.related-meta {
  display: flex;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--gray-400);
  font-weight: 500;
  margin-bottom: 10px;
}

.related-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 8px;
  line-height: 1.35;
}

.related-card h3 a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s;
}

.related-card h3 a:hover {
  color: var(--teal);
}

.related-card p {
  font-size: 0.85rem;
  color: var(--gray-400);
  line-height: 1.55;
}

/* 404 page */
.not-found-main {
  padding: 160px 24px 100px;
  text-align: center;
}

.not-found-main h1 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 12px;
}

.not-found-main p {
  font-size: 1rem;
  color: var(--gray-400);
  margin-bottom: 32px;
}

/* === RESPONSIVE === */
@media (max-width: 900px) {
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-sidebar {
    position: static;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }

  .blog-cta-banner {
    padding: 28px 20px;
  }

  .article-layout {
    gap: 40px;
  }
}