/* =============================================
   Blog Article Styles
   ============================================= */
.article-hero {
  background: linear-gradient(135deg, #003A96 0%, #001D4B 100%);
  padding: 56px 0 48px;
  position: relative; overflow: hidden;
}
.article-hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60'%3E%3Cpolygon points='30,2 58,16 58,44 30,58 2,44 2,16' fill='none' stroke='rgba(255,255,255,0.05)' stroke-width='1'/%3E%3C/svg%3E");
  background-size: 60px 60px;
}
.article-hero-category {
  font-size: 12px; font-weight: 600; letter-spacing: 2px;
  text-transform: uppercase; color: #3AC0E2;
  margin-bottom: 14px; position: relative; z-index: 1;
}
.article-hero-title {
  font-size: 36px; font-weight: 700; color: #fff;
  line-height: 1.3; max-width: 700px;
  position: relative; z-index: 1;
}
.article-hero-divider {
  width: 48px; height: 3px; background: #3AC0E2;
  border-radius: 2px; margin-top: 24px;
  position: relative; z-index: 1;
}

.article-back {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; color: #003A96;
  text-decoration: none; margin-bottom: 32px;
  transition: gap .2s;
}
.article-back:hover { gap: 12px; }

/* Two-column layout: article + sidebar */
.article-page { padding-top: 56px; padding-bottom: 80px; }
.article-layout { display: grid; grid-template-columns: 1fr 280px; gap: 48px; align-items: start; }
.article-wrap { min-width: 0; }

/* Sidebar */
.article-sidebar { position: sticky; top: 90px; }
.sidebar-box {
  background: #fff; border-radius: 12px;
  border: 1px solid #e8edf8;
  box-shadow: 0 2px 16px rgba(0,58,150,0.07);
  overflow: hidden;
}
.sidebar-box-title {
  background: linear-gradient(135deg, #003A96 0%, #001D4B 100%);
  color: #fff; font-size: 12px; font-weight: 700;
  letter-spacing: 1.5px; text-transform: uppercase;
  padding: 14px 20px;
}
.sidebar-posts { list-style: none; margin: 0; padding: 8px 0; }
.sidebar-posts li { border-bottom: 1px solid #f1f5f9; }
.sidebar-posts li:last-child { border-bottom: none; }
.sidebar-posts a {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 14px 20px; text-decoration: none;
  color: #374151; font-size: 13px; line-height: 1.5;
  transition: background .15s, color .15s;
}
.sidebar-posts a:hover { background: #f0f4ff; color: #003A96; }
.sidebar-posts a.active { background: #eef2ff; color: #003A96; font-weight: 600; }
.sidebar-posts a i { color: #003A96; margin-top: 2px; flex-shrink: 0; font-size: 10px; }

.article-featured-img {
  width: 100%; border-radius: 12px;
  margin-bottom: 40px; display: block;
  box-shadow: 0 4px 24px rgba(0,58,150,0.12);
  max-height: 420px; object-fit: cover; object-position: center;
}

.article-body { font-size: 16px; line-height: 1.85; color: #374151; }
.article-body p { margin: 0 0 20px; }
.article-body h2 {
  font-size: 26px; font-weight: 700; color: #003A96;
  margin: 40px 0 16px; padding-top: 8px;
}
.article-body h3 {
  font-size: 18px; font-weight: 600; color: #003A96;
  margin: 28px 0 10px;
}
.article-body ul { margin: 0 0 20px; padding-left: 20px; }
.article-body ul li { margin-bottom: 8px; }
.article-body ul li strong { color: #003A96; }
.article-body a { color: #003A96; }

.article-references {
  margin-top: 48px; padding-top: 32px;
  border-top: 1px solid #e5e7eb;
}
.article-references h2 { font-size: 20px; color: #003A96; margin-bottom: 16px; }
.article-references ol { margin: 0; padding-left: 20px; }
.article-references ol li { font-size: 14px; color: #6b7280; margin-bottom: 10px; line-height: 1.6; }
.article-references ol li a { color: #003A96; }

.article-cta {
  margin-top: 48px; padding: 28px 32px;
  background: linear-gradient(135deg, #003A9610, #3AC0E210);
  border: 1px solid #003A9620; border-radius: 12px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px; flex-wrap: wrap;
}
.article-cta-text { font-size: 15px; font-weight: 600; color: #003A96; }
.article-cta-text span { font-weight: 400; color: #374151; display: block; font-size: 13px; margin-top: 4px; }
.article-cta .btn-primary { color: #fff; }

.article-author {
  margin-top: 40px; padding-top: 24px;
  border-top: 1px solid #e5e7eb;
  font-size: 13px; color: #6b7280;
}

@media (max-width: 900px) {
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; }
  .sidebar-posts { display: flex; flex-wrap: wrap; gap: 0; }
  .sidebar-posts li { border-bottom: none; border-right: 1px solid #f1f5f9; flex: 1 1 auto; }
}
@media (max-width: 600px) {
  .article-hero-title { font-size: 24px; }
  .article-page { padding-top: 32px; padding-bottom: 60px; }
  .article-body h2 { font-size: 20px; }
  .article-cta { flex-direction: column; }
  .sidebar-posts { flex-direction: column; }
  .sidebar-posts li { border-right: none; border-bottom: 1px solid #f1f5f9; }
}