/* ============================================================
   BLOG POST PAGE — Article Styles
   ============================================================ */

/* --- Post Header ------------------------------------------ */
.post-header {
  padding-top: 64px;
  padding-bottom: 4rem;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.post-header::before {
  content: '';
  position: absolute;
  top: -150px;
  right: -100px;
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(79, 195, 247, 0.06) 0%, transparent 65%);
  pointer-events: none;
}

.post-header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 4rem 2rem 0;
  position: relative;
  z-index: 2;
}

.post-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  transition: color 0.2s;
}

.post-back:hover {
  color: var(--accent);
}

.post-header-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.post-title {
  font-size: clamp(2rem, 5vw, 3.8rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.08;
  color: var(--text);
  max-width: 820px;
  margin-bottom: 1.75rem;
}

.post-standfirst {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  color: var(--text-muted);
  max-width: 680px;
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

.post-byline {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.byline-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text);
}

.byline-detail {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.byline-divider {
  color: var(--border);
}

/* --- Post Body -------------------------------------------- */
.post-layout {
  max-width: 1100px;
  margin: 0 auto;
  padding: 4rem 2rem 6rem;
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 5rem;
  align-items: start;
}

.post-body {
  min-width: 0;
}

.post-body p {
  font-size: 1.08rem;
  line-height: 1.85;
  color: #c8d4de;
  margin-bottom: 1.75rem;
}

.post-body h2 {
  font-size: 1.5rem;
  color: var(--text);
  margin: 2.75rem 0 1rem;
  letter-spacing: -0.02em;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border);
}

.post-body h3 {
  font-size: 1.15rem;
  color: var(--text);
  margin: 2rem 0 0.75rem;
}

.post-body ul, .post-body ol {
  padding-left: 1.5rem;
  margin-bottom: 1.75rem;
}

.post-body li {
  font-size: 1.08rem;
  line-height: 1.75;
  color: #c8d4de;
  margin-bottom: 0.5rem;
}

.post-body blockquote {
  border-left: 3px solid var(--accent);
  margin: 2.5rem 0;
  padding: 1.25rem 1.75rem;
  background: var(--bg-card);
}

.post-body blockquote p {
  font-size: 1.15rem;
  font-style: italic;
  color: var(--text);
  margin-bottom: 0;
  line-height: 1.65;
}

.post-body strong {
  color: var(--text);
  font-weight: 600;
}

.post-body a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.post-body a:hover {
  opacity: 0.8;
}

/* --- Callout Box ------------------------------------------ */
.callout {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  padding: 1.5rem 1.75rem;
  margin: 2.5rem 0;
  border-radius: 0 3px 3px 0;
}

.callout-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.6rem;
  display: block;
}

.callout p {
  margin-bottom: 0 !important;
  font-size: 1rem !important;
}

/* --- Sidebar --------------------------------------------- */
.post-sidebar {
  position: sticky;
  top: 88px;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.sidebar-block {
  border: 1px solid var(--border);
  padding: 1.5rem;
  background: var(--bg-alt);
}

.sidebar-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
  display: block;
}

.sidebar-block p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 0;
}

.related-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.related-list li a {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.45;
  transition: color 0.2s;
  display: block;
}

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

.related-list li {
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

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

/* --- Post Footer ------------------------------------------ */
.post-footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 3.5rem 0;
}

.post-footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.post-footer-cta h3 {
  font-size: 1.1rem;
  margin-bottom: 0.4rem;
}

.post-footer-cta p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* --- Responsive ------------------------------------------- */
@media (max-width: 860px) {
  .post-layout {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .post-sidebar {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
  }

  .sidebar-block {
    flex: 1 1 260px;
  }
}

@media (max-width: 600px) {
  .post-title {
    font-size: 2rem;
  }

  .post-layout {
    padding: 2.5rem 1.5rem 4rem;
  }
}