#reading-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: var(--color-accent); z-index: 9999;
  transition: width .1s linear;
}

/* ── Breadcrumb ─────────────────────────────────────────────── */
.breadcrumb { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; padding: var(--space-md) 0; font-size: .8rem; color: var(--color-muted); }
.breadcrumb a { color: var(--color-muted); transition: color var(--transition); text-decoration: none; }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb-sep { color: var(--color-border); }

/* ── Post layout ────────────────────────────────────────────── */
.post-layout { display: grid; grid-template-columns: 1fr; gap: var(--space-2xl); padding-bottom: var(--space-4xl); }
@media (min-width: 1024px) {
  .post-layout { grid-template-columns: 1fr 300px; align-items: start; }
  .post-sidebar { position: sticky; top: calc(var(--navbar-height, 64px) + var(--space-lg)); align-self: start; max-height: calc(100vh - var(--navbar-height, 64px) - var(--space-lg) * 2); overflow-y: auto; }
}

/* ── Hero image ─────────────────────────────────────────────── */
.post-hero-img { width: 100%; max-height: 480px; object-fit: cover; border-radius: var(--radius-xl); margin-bottom: var(--space-2xl); box-shadow: var(--shadow-lg); display: block; }

/* ── Category badge ─────────────────────────────────────────── */
.post-cat-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--color-accent-light); color: var(--color-accent-dark);
  padding: 5px 14px; border-radius: var(--radius-full);
  font-size: .72rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  margin-bottom: var(--space-md); text-decoration: none; transition: all var(--transition);
}
.post-cat-badge:hover { background: var(--color-accent); color: var(--color-primary); }

/* ── Post title ─────────────────────────────────────────────── */
.post-title {
  font-family: var(--font-display); font-size: clamp(1.75rem,4vw,2.75rem);
  font-weight: 800; color: var(--color-primary); line-height: 1.2; margin-bottom: var(--space-lg);
}

/* ── Meta bar ───────────────────────────────────────────────── */
.post-meta {
  display: flex; align-items: center; gap: var(--space-lg); flex-wrap: wrap;
  padding: var(--space-md) 0; border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border); margin-bottom: var(--space-2xl);
}
.post-meta-item { display: flex; align-items: center; gap: 6px; font-size: .85rem; color: var(--color-muted); }
.post-meta-item i { color: var(--color-accent); flex-shrink: 0; font-size: .9rem; }
.post-meta-item strong { color: var(--color-text); font-weight: 600; }

/* ── Article body ───────────────────────────────────────────── */
.post-body { font-size: 1.05rem; line-height: 1.85; color: var(--color-text); }
.post-body h2 { font-family: var(--font-display); font-size: 1.6rem; font-weight: 700; color: var(--color-primary); margin: 2.5rem 0 1rem; padding-bottom: .5rem; border-bottom: 3px solid var(--color-accent-light); }
.post-body h3 { font-family: var(--font-display); font-size: 1.25rem; font-weight: 700; color: var(--color-primary); margin: 2rem 0 .75rem; }
.post-body p { margin-bottom: 1.4rem; }
.post-body ul, .post-body ol { margin: 0 0 1.4rem 1.5rem; display: flex; flex-direction: column; gap: .5rem; }
.post-body ul { list-style: disc; }
.post-body ol { list-style: decimal; }
.post-body li { line-height: 1.7; }
.post-body pre { background: var(--color-primary); color: var(--color-accent); padding: var(--space-lg); border-radius: var(--radius-md); overflow-x: auto; font-size: .875rem; line-height: 1.7; margin: 1.5rem 0; }
.post-body code { background: var(--color-accent-light); color: var(--color-accent-dark); padding: 2px 7px; border-radius: 4px; font-size: .875em; }
.post-body pre code { background: none; color: inherit; padding: 0; font-size: inherit; }
.post-body blockquote { border-left: 4px solid var(--color-accent); padding: var(--space-md) var(--space-lg); margin: 1.5rem 0; background: var(--color-accent-light); border-radius: 0 var(--radius-md) var(--radius-md) 0; font-style: italic; color: var(--color-text-light); }
.post-body img { border-radius: var(--radius-md); margin: 1.5rem 0; box-shadow: var(--shadow-md); max-width: 100%; }
.post-body a { color: var(--color-accent); text-decoration: underline; text-underline-offset: 3px; }
.post-body a:hover { color: var(--color-accent-dark); }

/* ── Share bar ──────────────────────────────────────────────── */
.share-bar { display: flex; align-items: center; gap: var(--space-md); flex-wrap: wrap; padding: var(--space-lg); background: var(--color-accent-light); border-radius: var(--radius-lg); margin-top: var(--space-2xl); }
.share-label { font-weight: 700; font-size: .875rem; color: var(--color-primary); }
.share-btn { display: inline-flex; align-items: center; gap: 6px; padding: 6px 16px; border-radius: var(--radius-full); font-size: .8rem; font-weight: 700; text-decoration: none; color: var(--color-white); transition: opacity var(--transition), transform var(--transition); }
.share-btn:hover { opacity: .85; transform: translateY(-1px); }
.share-twitter  { background: #1DA1F2; }
.share-linkedin { background: #0A66C2; }
.share-facebook { background: #1877F2; }

/* ── Prev/Next nav ──────────────────────────────────────────── */
.post-nav { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-lg); margin-top: var(--space-2xl); }
@media (max-width: 600px) { .post-nav { grid-template-columns: 1fr; } }
.post-nav-item {
  display: flex; flex-direction: column; gap: 4px;
  padding: var(--space-lg); background: var(--color-white);
  border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  text-decoration: none; transition: all var(--transition);
}
.post-nav-item:hover { border-color: var(--color-accent); box-shadow: var(--shadow-md); }
.post-nav-item.next { text-align: right; }
.post-nav-label { font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; color: var(--color-muted); font-weight: 700; }
.post-nav-title { font-size: .9rem; font-weight: 700; color: var(--color-primary); line-height: 1.35; }
.post-nav-item:hover .post-nav-title { color: var(--color-accent); }

/* ── Author box ─────────────────────────────────────────────── */
.author-box { display: flex; gap: var(--space-lg); align-items: flex-start; padding: var(--space-xl); background: var(--color-white); border: 1px solid var(--color-border); border-radius: var(--radius-lg); margin-top: var(--space-2xl); }
.author-avatar { width: 64px; height: 64px; border-radius: 50%; background: linear-gradient(135deg, var(--color-primary), var(--color-accent)); display: flex; align-items: center; justify-content: center; font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; color: var(--color-white); flex-shrink: 0; }
.author-name { font-weight: 700; color: var(--color-primary); margin-bottom: 4px; font-size: 1rem; }
.author-role { font-size: .78rem; color: var(--color-accent); margin-bottom: var(--space-sm); font-weight: 600; }
.author-bio { font-size: .875rem; color: var(--color-text-light); line-height: 1.65; }

/* ── Sidebar ────────────────────────────────────────────────── */
.post-sidebar { display: flex; flex-direction: column; gap: var(--space-lg); }
.widget-card { background: var(--color-white); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-lg); }
.widget-title { font-family: var(--font-display); font-size: 1rem; font-weight: 700; color: var(--color-primary); margin-bottom: var(--space-md); padding-bottom: var(--space-sm); border-bottom: 2px solid var(--color-accent-light); }

/* TOC */
.toc-list { list-style: none; display: flex; flex-direction: column; gap: 6px; counter-reset: toc-counter; }
.toc-list li a {
  font-size: .84rem; color: var(--color-text-light); text-decoration: none;
  display: flex; align-items: flex-start; gap: 8px; padding: 5px 8px;
  border-radius: var(--radius-sm); transition: all var(--transition); line-height: 1.4;
}
.toc-list li a::before {
  content: counter(toc-counter); counter-increment: toc-counter;
  display: inline-flex; align-items: center; justify-content: center;
  width: 20px; height: 20px; background: var(--color-accent-light);
  color: var(--color-accent-dark); border-radius: 50%;
  font-size: .68rem; font-weight: 800; flex-shrink: 0; margin-top: 1px;
}
.toc-list li a:hover, .toc-list li a.active { background: var(--color-accent-light); color: var(--color-accent-dark); }
.toc-list li a.active::before { background: var(--color-accent); color: var(--color-primary); }

/* Related sidebar */
.related-item { display: flex; gap: var(--space-md); align-items: flex-start; padding: var(--space-sm) 0; border-bottom: 1px solid var(--color-border); text-decoration: none; transition: opacity var(--transition); }
.related-item:last-child { border-bottom: none; }
.related-item:hover { opacity: .75; }
.related-thumb { width: 56px; height: 56px; object-fit: cover; border-radius: var(--radius-sm); flex-shrink: 0; }
.related-title { font-size: .82rem; font-weight: 600; color: var(--color-text); line-height: 1.4; margin-bottom: 3px; }
.related-date { font-size: .72rem; color: var(--color-muted); }

/* CTA widget */
.cta-widget { background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light,#1a3a5c) 100%); color: var(--color-white); }
.cta-widget .widget-title { color: var(--color-white); border-bottom-color: rgba(255,255,255,.2); }
.cta-widget p { font-size: .85rem; color: rgba(255,255,255,.75); margin-bottom: var(--space-lg); line-height: 1.6; }

/* ── Related posts (bottom grid) ───────────────────────────── */
.related-section { background: var(--color-bg); padding: var(--space-3xl) 0; }
.related-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-xl); }
@media (min-width: 640px) { .related-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .related-grid { grid-template-columns: repeat(3, 1fr); } }
.blog-card { background: var(--color-white); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--color-border); transition: transform var(--transition), box-shadow var(--transition); }
.blog-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.blog-thumb { height: 180px; background-size: cover; background-position: center; background-color: var(--color-primary); }
.blog-body { padding: var(--space-lg); }
.blog-tag { display: inline-block; background: var(--color-accent-light); color: var(--color-accent-dark); padding: 3px 10px; border-radius: var(--radius-full); font-size: .68rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; margin-bottom: var(--space-sm); }
.blog-title { font-family: var(--font-display); font-size: 1rem; font-weight: 700; color: var(--color-primary); margin-bottom: var(--space-sm); line-height: 1.35; }
.blog-title a { text-decoration: none; color: inherit; transition: color var(--transition); }
.blog-title a:hover { color: var(--color-accent); }
.blog-meta { display: flex; gap: var(--space-md); font-size: .78rem; color: var(--color-muted); margin-bottom: var(--space-md); flex-wrap: wrap; }
.blog-read-more { display: inline-flex; align-items: center; gap: 5px; font-size: .8rem; font-weight: 700; color: var(--color-accent); text-decoration: none; transition: gap var(--transition); }
.blog-read-more:hover { gap: 8px; }

/* ── 404 ────────────────────────────────────────────────────── */
.not-found-wrap { text-align: center; padding: var(--space-4xl) var(--space-lg); }
.not-found-code { font-family: var(--font-display); font-size: 6rem; font-weight: 800; color: var(--color-accent); line-height: 1; }
.not-found-msg { font-size: 1.25rem; color: var(--color-primary); margin: var(--space-md) 0 var(--space-xl); }