/* ============================================================
   GEOVENTURES — Blog page premium
   ============================================================ */

.blog-page-section {
  position: relative;
  background:
    radial-gradient(ellipse at 15% 0%, rgba(201,148,63,0.11) 0%, transparent 38%),
    linear-gradient(180deg, var(--white) 0%, var(--off-white) 100%);
  overflow: hidden;
}

.blog-page-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,30,79,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,30,79,0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.blog-page-section .container {
  position: relative;
  z-index: 1;
}

.blog-section-header {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: 3rem;
  align-items: end;
  margin-bottom: 2.75rem;
}

.blog-section-header .h2 {
  max-width: 760px;
}

.blog-section-header p {
  color: var(--text-secondary);
  font-size: var(--body-lg);
  line-height: 1.8;
  max-width: 460px;
}

.blog-filter-bar {
  justify-content: flex-start;
  margin-bottom: 2.25rem;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.blog-grid .blog-card {
  border-color: rgba(0,30,79,0.08);
  box-shadow: var(--shadow-xs);
}

.blog-grid .blog-card:first-child {
  grid-column: span 2;
}

.blog-grid .blog-card:first-child .blog-card-img {
  aspect-ratio: 21/9;
}

.blog-grid .blog-card:first-child .blog-title {
  font-size: 1.35rem;
}

.blog-grid .blog-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(0,13,36,0.08) 0%, rgba(0,13,36,0.42) 100%),
    radial-gradient(ellipse at 80% 20%, rgba(201,148,63,0.22) 0%, transparent 42%);
  opacity: 0.85;
  transition: opacity var(--t-base);
}

.blog-grid .blog-card:hover .blog-card-img::after {
  opacity: 0.55;
}

.blog-card-img--regulation {
  background:
    linear-gradient(135deg, rgba(0,13,36,0.88), rgba(0,42,110,0.82)),
    url('../assets/hero_bg.png') center/cover no-repeat;
}

.blog-grid .blog-card[hidden] {
  display: none;
}

.page-article .article-header .page-header-bg {
  filter: saturate(0.9) contrast(1.05);
}

.article-page-section {
  position: relative;
  background:
    radial-gradient(ellipse at 10% 0%, rgba(201,148,63,0.11), transparent 34%),
    linear-gradient(180deg, var(--white), var(--off-white));
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.article-main {
  min-width: 0;
}

.article-hero-image {
  min-height: clamp(260px, 42vw, 520px);
  border-radius: var(--r-md);
  background-position: center;
  background-size: cover;
  box-shadow: var(--shadow-md);
  overflow: hidden;
  position: relative;
}

.article-hero-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(0,13,36,0.02), rgba(0,13,36,0.24)),
    radial-gradient(ellipse at 82% 18%, rgba(201,148,63,0.2), transparent 40%);
}

.article-meta-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 2rem 0 1.25rem;
}

.article-meta-line span {
  border: 1px solid rgba(0,30,79,0.1);
  border-radius: 999px;
  padding: 0.48rem 0.72rem;
  background: rgba(255,255,255,0.72);
  color: var(--text-secondary);
  font-family: var(--f-sub);
  font-size: var(--label);
  font-weight: 700;
}

.article-content {
  max-width: 790px;
}

.article-content h2 {
  color: var(--navy);
  font-family: var(--f-heading);
  font-size: clamp(1.45rem, 3vw, 2rem);
  margin: 2.4rem 0 0.9rem;
}

.article-content p,
.article-content li {
  color: var(--text-secondary);
  font-size: var(--body-lg);
  line-height: 1.9;
}

.article-content .article-lead {
  color: var(--text-primary);
  font-size: clamp(1.15rem, 2vw, 1.35rem);
  line-height: 1.75;
}

.article-points {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
  padding: 0;
  margin: 1.2rem 0 0;
  list-style: none;
}

.article-points li {
  border: 1px solid rgba(0,30,79,0.08);
  border-radius: var(--r-xs);
  padding: 1rem;
  background: rgba(255,255,255,0.78);
  box-shadow: var(--shadow-xs);
  color: var(--navy);
  font-family: var(--f-sub);
  font-size: var(--body-sm);
  font-weight: 700;
  line-height: 1.5;
}

.article-sidebar {
  position: sticky;
  top: calc(var(--header-h) + 1.5rem);
  display: grid;
  gap: 1rem;
}

.article-side-card {
  border: 1px solid rgba(0,30,79,0.08);
  border-radius: var(--r-md);
  padding: 1.45rem;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.95), rgba(247,246,242,0.92)),
    radial-gradient(ellipse at 0% 0%, rgba(201,148,63,0.16), transparent 40%);
  box-shadow: var(--shadow-xs);
}

.article-side-card p {
  margin-top: 0.65rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.related-list {
  display: grid;
  gap: 0.75rem;
  margin-top: 1rem;
}

.related-link {
  display: grid;
  gap: 0.35rem;
  border-top: 1px solid rgba(0,30,79,0.08);
  padding-top: 0.85rem;
}

.related-link:first-child {
  border-top: 0;
  padding-top: 0;
}

.related-category {
  color: var(--gold);
  font-family: var(--f-sub);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.related-link strong {
  color: var(--navy);
  font-family: var(--f-heading);
  font-size: 0.94rem;
  line-height: 1.45;
  transition: color var(--t-fast);
}

.related-link:hover strong {
  color: var(--gold-dark);
}

.article-back-btn {
  width: 100%;
  justify-content: center;
}

.blog-newsletter {
  background:
    linear-gradient(135deg, rgba(255,255,255,0.96), rgba(247,246,242,0.96)),
    radial-gradient(ellipse at 0% 0%, rgba(201,148,63,0.16), transparent 38%);
  border-radius: var(--r-md);
  padding: 3rem;
  box-shadow: var(--shadow-md);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  border-left: 5px solid var(--gold);
}

.newsletter-text h2 {
  color: var(--navy);
  margin-bottom: 0.75rem;
}

.newsletter-text p,
.newsletter-form-wrap p {
  color: var(--text-secondary);
}

@media (max-width: 1024px) {
  .blog-section-header {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .blog-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .blog-grid .blog-card:first-child {
    grid-column: span 2;
  }

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

  .article-sidebar {
    position: static;
  }
}

@media (max-width: 768px) {
  .blog-filter-bar {
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 0.25rem;
  }

  .blog-filter-bar .filter-btn {
    white-space: nowrap;
  }

  .blog-grid,
  .blog-newsletter {
    grid-template-columns: 1fr;
  }

  .blog-grid .blog-card:first-child {
    grid-column: auto;
  }

  .blog-grid .blog-card:first-child .blog-card-img {
    aspect-ratio: 16/9;
  }

  .blog-grid .blog-card:first-child .blog-title {
    font-size: 1rem;
  }

  .blog-newsletter {
    padding: 2rem;
    gap: 1.5rem;
  }

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

  .article-content p,
  .article-content li {
    font-size: 1rem;
  }
}