/* ===================================================
   GCNP — Individual Blog Post Page Styles
   =================================================== */

/* ── Post Hero ──────────────────────────────────────── */
.post-hero {
  background: var(--color-primary);
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
  position: relative;
  overflow: hidden;
}

.post-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 80% 50%, rgba(43,181,200,0.15) 0%, transparent 60%);
  pointer-events: none;
}

.post-hero-inner {
  max-width: 860px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.post-back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  margin-bottom: var(--space-6);
  transition: color 0.2s;
}

.post-back-link:hover { color: #fff; }

.post-back-link svg { flex-shrink: 0; }

.post-category-tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: rgba(43,181,200,0.2);
  color: var(--color-accent);
  border: 1px solid rgba(43,181,200,0.4);
  margin-bottom: var(--space-4);
}

.post-hero-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  margin-bottom: var(--space-5);
  max-width: 36ch;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  flex-wrap: wrap;
}

.post-meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.6);
}

.post-meta-item svg { color: var(--color-accent); }

/* ── Layout ─────────────────────────────────────────── */
.post-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-12);
  max-width: 1140px;
  margin: 0 auto;
  padding: clamp(var(--space-10), 6vw, var(--space-20)) clamp(var(--space-6), 5vw, var(--space-16));
  align-items: start;
}

/* ── Article Body ───────────────────────────────────── */
.post-article {
  min-width: 0;
}

.post-article h2 {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 700;
  color: var(--color-primary);
  margin-top: var(--space-10);
  margin-bottom: var(--space-4);
  line-height: 1.3;
}

.post-article h3 {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-primary);
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
}

.post-article p {
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--color-text);
  margin-bottom: var(--space-5);
  max-width: 68ch;
}

.post-article ul,
.post-article ol {
  padding-left: var(--space-6);
  margin-bottom: var(--space-5);
}

.post-article li {
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.post-callout {
  background: color-mix(in oklab, var(--color-accent) 8%, transparent);
  border-left: 4px solid var(--color-accent);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  padding: var(--space-5) var(--space-6);
  margin-block: var(--space-8);
}

.post-callout p {
  margin-bottom: 0;
  font-size: var(--text-base);
  color: var(--color-primary);
  font-weight: 500;
}

/* ── Sidebar ────────────────────────────────────────── */
.post-sidebar {
  position: sticky;
  top: calc(var(--space-6) + 70px);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

/* CTA Card */
.sidebar-cta {
  background: var(--color-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  color: rgba(255,255,255,0.85);
}

.sidebar-cta h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--space-3);
  line-height: 1.3;
}

.sidebar-cta p {
  font-size: var(--text-sm);
  line-height: 1.6;
  margin-bottom: var(--space-5);
  color: rgba(255,255,255,0.75);
}

.sidebar-cta .btn-primary {
  width: 100%;
  justify-content: center;
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

.sidebar-cta .btn-primary:hover {
  background: color-mix(in oklab, var(--color-accent) 85%, #000);
}

/* Further Reading Card */
.sidebar-further {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
}

.sidebar-further h4 {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}

.further-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.further-list li {
  border-bottom: 1px solid var(--color-border);
  padding-block: var(--space-4);
}

.further-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.further-list a {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.4;
  transition: color 0.2s;
}

.further-list a:hover { color: var(--color-accent); }

.further-list a::before {
  content: '';
  flex-shrink: 0;
  width: 3px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 50%;
  margin-top: 7px;
}

.further-list .further-category {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  display: block;
  margin-top: var(--space-1);
  font-weight: 400;
}

/* ── Post CTA Banner ────────────────────────────────── */
.post-cta-banner {
  background: linear-gradient(135deg, var(--color-primary) 0%, #1e3a5c 100%);
  padding: clamp(var(--space-10), 5vw, var(--space-16)) clamp(var(--space-6), 5vw, var(--space-16));
  text-align: center;
}

.post-cta-banner h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--space-4);
}

.post-cta-banner p {
  font-size: var(--text-base);
  color: rgba(255,255,255,0.75);
  margin-bottom: var(--space-8);
  max-width: 55ch;
  margin-inline: auto;
}

.post-cta-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Responsive ─────────────────────────────────────── */
@media (max-width: 900px) {
  .post-layout {
    grid-template-columns: 1fr;
  }
  .post-sidebar {
    position: static;
  }
}

@media (max-width: 640px) {
  .post-meta { gap: var(--space-3); }
  .post-cta-actions { flex-direction: column; align-items: center; }
}

/* ── Contextual inline links ─────────────────────────── */
.post-inline-link {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-color: color-mix(in oklab, var(--color-accent) 40%, transparent);
  text-underline-offset: 3px;
  font-weight: 500;
  transition: color 0.2s, text-decoration-color 0.2s;
}
.post-inline-link:hover {
  color: var(--color-primary);
  text-decoration-color: var(--color-primary);
}