.article { max-width: var(--max-article); margin: 0 auto; }

.article-header { margin-bottom: var(--space-5); padding: 0 var(--space-3); }

.breadcrumb {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: var(--space-3);
}
.breadcrumb a { color: var(--text-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--brand-accent); }

.article-cat {
  display: inline-block;
  background: var(--cat-color-light);
  color: white;
  font-size: 0.85rem;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-3);
}
[data-theme="dark"] .article-cat { background: var(--cat-color-dark); }

.article-title {
  font-family: var(--font-serif-cjk);
  font-size: clamp(1.875rem, 5vw, 3rem);
  line-height: 1.2;
  margin: 0 0 var(--space-3);
}

.article-meta {
  color: var(--text-muted);
  font-size: 0.9rem;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}
.article-tag {
  display: inline-block;
  margin: 0 var(--space-1) 0 0;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
}
.article-tag:hover { color: var(--brand-accent); }

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: var(--space-5);
  padding-left: var(--space-3);
  padding-right: var(--space-3);
}
@media (min-width: 1024px) {
  /* drop the right padding on desktop so the sidebar (and its slim scrollbar)
     sits flush to the layout's right edge for a cleaner look */
  .article-layout { padding-right: 0; }
}
@media (max-width: 1023px) {
  .article-layout { grid-template-columns: 1fr; }
}

.article-main { min-width: 0; }
.article-main > * { max-width: var(--max-content); margin-left: auto; margin-right: auto; }
.article-summary-image, .article-embed { max-width: var(--max-content); }
.article-summary-image { width: 100%; border-radius: var(--radius-md); margin-bottom: var(--space-5); }

.video-embed {
  position: relative;
  aspect-ratio: 16 / 9;
  margin-bottom: var(--space-5);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.video-embed iframe { position: absolute; width: 100%; height: 100%; border: 0; }

.apple-podcast { margin-bottom: var(--space-5); }

.podcast-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-primary);
  margin-bottom: var(--space-5);
  transition: transform 150ms ease;
}
.podcast-link:hover { transform: translateY(-1px); }
.podcast-icon { font-size: 1.5rem; }
.podcast-info { flex: 1; }
.podcast-platform { color: var(--text-muted); font-size: 0.85rem; }
.podcast-title { font-weight: 500; }
.podcast-arrow { color: var(--brand-accent); }

.book-info {
  background: var(--bg-subtle);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--brand-accent);
  margin-bottom: var(--space-5);
}
.book-info h2 { margin-top: 0; font-size: 1.25rem; }

.article-body {
  font-size: 1.18rem;
  line-height: 1.85;
}
.article-body h2 { margin-top: var(--space-6); padding-bottom: var(--space-2); border-bottom: 1px solid var(--border); }
.article-body h3 { margin-top: var(--space-5); }
.article-body :is(h1, h2, h3, h4, h5, h6) { scroll-margin-top: 160px; }
.article-body img {
  border-radius: var(--radius-md);
  margin: var(--space-4) auto;
  display: block;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08), 0 1px 3px rgba(0, 0, 0, 0.06);
}
@media (prefers-color-scheme: dark) {
  .article-body img { box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5), 0 1px 3px rgba(0, 0, 0, 0.4); }
}
[data-theme="dark"] .article-body img { box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5), 0 1px 3px rgba(0, 0, 0, 0.4); }
.article-body ul, .article-body ol { padding-left: var(--space-4); }
.article-body li { margin-bottom: var(--space-1); }

/* === SIDEBAR === */
.article-sidebar { font-size: 0.9rem; }
@media (min-width: 1024px) {
  .article-sidebar {
    position: sticky;
    top: 80px;
    align-self: start;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
    /* slim, subtle scrollbar — Firefox */
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
    /* push the scrollbar all the way to the column's right edge */
    padding-right: 0;
  }
  /* WebKit / Blink: also slim + minimal-intrusion track */
  .article-sidebar::-webkit-scrollbar { width: 6px; }
  .article-sidebar::-webkit-scrollbar-track { background: transparent; }
  .article-sidebar::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 999px;
  }
  .article-sidebar::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }
}
.sidebar-section {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  margin-bottom: var(--space-3);
}
.sidebar-title {
  font-family: var(--font-serif-cjk);
  font-size: 1rem;
  margin: 0 0 var(--space-2);
  color: var(--brand-primary);
}
[data-theme="dark"] .sidebar-title { color: var(--brand-accent); }

/* === SIDEBAR · YouTube CTA === */
.sidebar-yt { text-align: center; padding: var(--space-3); }
.yt-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}
.yt-content {
  /* rgba instead of color-mix for Safari < 16.2 compat */
  background: linear-gradient(135deg, rgba(255, 0, 0, 0.08), rgba(255, 0, 0, 0.02));
  border: 1px dashed rgba(255, 0, 0, 0.25);
  border-radius: var(--radius-md);
  padding: var(--space-3);
}
[data-theme="dark"] .yt-content {
  background: linear-gradient(135deg, rgba(255, 68, 68, 0.15), rgba(255, 68, 68, 0.05));
  border-color: rgba(255, 68, 68, 0.35);
}
.yt-headline {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0 0 var(--space-2);
}
.yt-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: #FF0000;
  color: #fff;
  font-family: var(--font-sans-cjk);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 999px;
  text-decoration: none;
  transition: transform 150ms ease, background-color 150ms ease;
}
.yt-badge:hover { background: #cc0000; transform: translateY(-1px); }

.toc-content ul { list-style: none; padding-left: 0; margin: 0; }
.toc-content ul ul { padding-left: 0; }
.toc-content li { margin: var(--space-1) 0; }
.toc-content a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  line-height: 1.4;
  display: block;
  padding: 6px 10px;
  border-left: 2px solid var(--border);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  transition: background-color 150ms ease, border-color 150ms ease, color 150ms ease;
}
.toc-content ul ul a { padding-left: 24px; font-size: 0.9rem; }
.toc-content ul ul ul a { padding-left: 38px; }
.toc-content a:hover {
  color: var(--brand-accent);
  border-left-color: var(--brand-accent);
  background: rgba(168, 124, 62, 0.10);          /* light-mode brand-accent tint */
}
[data-theme="dark"] .toc-content a:hover {
  background: rgba(196, 150, 86, 0.12);          /* dark-mode brand-accent tint */
}

.related-list { list-style: none; padding: 0; margin: 0; }
.related-list li { margin-bottom: var(--space-2); }
.related-list a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  line-height: 1.4;
  display: block;
}
.related-list a:hover { color: var(--brand-accent); }

/* === COMMENTS === */
.comments { margin-top: var(--space-7); padding-top: var(--space-5); border-top: 1px solid var(--border); }
.comments-title { font-family: var(--font-serif-cjk); font-size: 1.5rem; margin-bottom: var(--space-3); }
.comments-dev-note {
  background: var(--bg-subtle);
  border-left: 3px solid var(--brand-accent);
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: var(--space-3);
}
.comments-email-fallback {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-top: var(--space-3);
}
.comments-email-fallback a {
  font-weight: 500;
  margin-left: 4px;
}

/* === ARTICLE VIEW COUNT === */
.article-views {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* === CLAP + SHARE === */
.clap-share {
  margin: var(--space-6) auto;
  max-width: var(--max-content);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  padding: var(--space-4);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.clap-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.clap-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-base);
  border: 2px solid var(--border);
  border-radius: 999px;
  padding: 10px 20px;
  cursor: pointer;
  font-family: var(--font-sans-cjk);
  font-size: 1.1rem;
  color: var(--text-primary);
  transition: transform 80ms ease, border-color 150ms ease, background-color 150ms ease;
  user-select: none;
}
.clap-btn:hover {
  border-color: var(--brand-accent);
  background: rgba(168, 124, 62, 0.08);
}
[data-theme="dark"] .clap-btn:hover {
  background: rgba(196, 150, 86, 0.12);
}
.clap-btn:active { transform: scale(0.96); }
.clap-btn.pulse .clap-emoji {
  animation: clap-pop 350ms ease;
}
.clap-btn[data-mine]:not([data-mine="0"]) {
  border-color: var(--brand-accent);
}
@keyframes clap-pop {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.3) rotate(-10deg); }
  70%  { transform: scale(0.95) rotate(5deg); }
  100% { transform: scale(1); }
}
.clap-emoji { font-size: 1.4rem; line-height: 1; display: inline-block; }
.clap-count { font-weight: 600; }
.clap-hint {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.share-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.share-label {
  color: var(--text-muted);
  font-size: 0.85rem;
}
.share-btn {
  display: inline-block;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-base);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  font-family: var(--font-sans-cjk);
  cursor: pointer;
  transition: all 150ms ease;
}
.share-btn:hover {
  background: var(--brand-primary);
  color: var(--bg-elevated);
  border-color: var(--brand-primary);
}
.share-btn.copied { background: var(--brand-accent); color: #fff; border-color: var(--brand-accent); }
.share-btn.copy-failed { background: #b94a48; color: #fff; border-color: #b94a48; }

@media (max-width: 767px) {
  .clap-share { flex-direction: column; align-items: stretch; }
  .clap-wrap, .share-wrap { justify-content: center; }
}