/* ===== Single Post & Archive ===== */

/* --- Post Hero Banner --- */
.post-hero {
  position: relative;
  overflow: hidden;
  padding: 100px 0 68px;
  background: linear-gradient(180deg, #f8fbff 0%, #fff 83%);
}
.post-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(12,92,166,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(12,92,166,.035) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(to bottom, black, transparent 78%);
}
.post-hero .container { position: relative; }
.post-hero .eyebrow { margin-bottom: 14px; }
.post-hero h1 {
  margin: 0;
  max-width: 820px;
  color: var(--navy-950);
  font-size: clamp(32px, 4.4vw, 52px);
  line-height: 1.12;
  letter-spacing: -.04em;
}
.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 22px;
  color: var(--muted);
  font-size: 14px;
}
.post-meta time,
.post-meta span { display: inline-flex; align-items: center; gap: 6px; }
.post-meta svg { width: 15px; height: 15px; }
.post-hero-image {
  margin-top: 44px;
  max-width: 860px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-md);
}
.post-hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* --- Post Body --- */
.post-body {
  padding: 72px 0 88px;
}
.post-body .container {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 72px;
  align-items: start;
}
.post-content {
  max-width: 100%;
  min-width: 0;
}
.post-content h2 {
  margin: 48px 0 16px;
  color: var(--navy-900);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.22;
  letter-spacing: -.025em;
}
.post-content h2:first-child { margin-top: 0; }
.post-content h3 {
  margin: 36px 0 12px;
  color: var(--navy-900);
  font-size: 20px;
  line-height: 1.3;
}
.post-content p {
  margin: 0 0 18px;
  color: #3d566e;
  font-size: 16.5px;
  line-height: 1.75;
}
.post-content ul,
.post-content ol {
  margin: 0 0 22px;
  padding-left: 24px;
  color: #3d566e;
  font-size: 16px;
  line-height: 1.8;
}
.post-content li { margin-bottom: 6px; }
.post-content li strong { color: var(--navy-900); }
.post-content a { color: var(--blue-600); text-decoration: underline; text-underline-offset: 3px; }
.post-content a:hover { color: var(--navy-800); }
.post-content img {
  margin: 28px 0;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
}
.post-content blockquote {
  margin: 28px 0;
  padding: 22px 28px;
  border-left: 4px solid var(--blue-500);
  background: var(--blue-50);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--navy-900);
  font-size: 17px;
  font-style: italic;
}
.post-content blockquote p { color: var(--navy-900); margin: 0; }

/* --- Sidebar --- */
.post-sidebar {
  position: sticky;
  top: 110px;
}
.sidebar-card {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(145deg, white, #f8fbff);
  box-shadow: var(--shadow-sm);
}
.sidebar-card h2 {
  margin: 0 0 20px;
  color: var(--navy-900);
  font-size: 16px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .06em;
}
.sidebar-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 16px;
}
.sidebar-list li { padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.sidebar-list li:last-child { padding-bottom: 0; border-bottom: 0; }
.sidebar-list a {
  display: block;
  color: var(--navy-900);
  font-size: 15px;
  font-weight: 650;
  line-height: 1.4;
  transition: color var(--transition);
}
.sidebar-list a:hover { color: var(--blue-600); }
.sidebar-list small {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.sidebar-cta {
  margin-top: 24px;
  padding: 28px;
  border-radius: var(--radius-md);
  color: white;
  background: linear-gradient(135deg, var(--navy-950), var(--navy-700));
  box-shadow: 0 14px 36px rgba(5,43,97,.2);
}
.sidebar-cta h3 { margin: 0 0 10px; font-size: 18px; }
.sidebar-cta p { margin: 0 0 18px; color: rgba(255,255,255,.72); font-size: 14px; }
.sidebar-cta .btn { width: 100%; font-size: 14px; min-height: 46px; }

/* --- Related Posts Grid (bottom of single) --- */
.related-section {
  padding: 20px 0 104px;
}
.related-section .section-heading {
  margin-bottom: 36px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.related-card {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(145deg, white, #f8fbff);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.related-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: #b4d3ec;
}
.related-card .article-tag { margin-bottom: 14px; }
.related-card h3 {
  margin: 0 0 12px;
  color: var(--navy-900);
  font-size: 19px;
  line-height: 1.35;
}
.related-card h3 a { transition: color var(--transition); }
.related-card h3 a:hover { color: var(--blue-600); }
.related-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card .text-link { margin-top: 16px; font-size: 14px; }

/* --- Archive / Blog Listing --- */
.archive-hero {
  position: relative;
  overflow: hidden;
  padding: 100px 0 58px;
  background: linear-gradient(180deg, #f8fbff 0%, #fff 83%);
}
.archive-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(12,92,166,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(12,92,166,.035) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(to bottom, black, transparent 78%);
}
.archive-hero .container { position: relative; }
.archive-hero h1 {
  margin: 0;
  color: var(--navy-950);
  font-size: clamp(34px, 4.4vw, 52px);
  line-height: 1.12;
  letter-spacing: -.04em;
}
.archive-hero p {
  margin: 16px 0 0;
  max-width: 600px;
  color: var(--muted);
  font-size: 18px;
}
.archive-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  padding: 64px 0 104px;
}
.archive-card {
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(145deg, white, #f8fbff);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.archive-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: #b4d3ec;
}
.archive-card .article-tag { margin-bottom: 14px; justify-self: start; }
.archive-card h2 {
  margin: 0 0 14px;
  color: var(--navy-900);
  font-size: 22px;
  line-height: 1.3;
  letter-spacing: -.015em;
}
.archive-card h2 a { transition: color var(--transition); }
.archive-card h2 a:hover { color: var(--blue-600); }
.archive-card p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.archive-card .text-link { font-size: 14px; }

/* --- Pagination --- */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 0 104px;
}
.pagination a,
.pagination span {
  display: grid;
  place-items: center;
  min-width: 44px;
  min-height: 44px;
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  font-weight: 700;
  font-size: 14px;
  color: var(--navy-900);
  transition: background var(--transition), border-color var(--transition);
}
.pagination a:hover { background: var(--blue-50); border-color: var(--blue-500); }
.pagination .current {
  color: white;
  background: var(--navy-800);
  border-color: var(--navy-800);
}

/* --- Responsive --- */
@media (max-width: 1100px) {
  .post-body .container { grid-template-columns: 1fr 280px; gap: 48px; }
}
@media (max-width: 900px) {
  .post-hero { padding: 70px 0 48px; }
  .post-body .container { grid-template-columns: 1fr; }
  .post-sidebar { position: static; display: grid; gap: 24px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .archive-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .post-hero { padding: 56px 0 36px; }
  .post-hero h1 { font-size: clamp(28px, 9vw, 40px); }
  .post-hero-image { margin-top: 28px; border-radius: 20px; }
  .post-body { padding: 48px 0 64px; }
  .related-section { padding-bottom: 76px; }
  .related-grid { grid-template-columns: 1fr; }
  .archive-grid { gap: 20px; }
  .archive-card { padding: 24px; }
  .archive-card h2 { font-size: 20px; }
}