/* SLP-EDU-001 Stage 1 — Sleep Education Library styles. Mobile-first, dark-mode-aware.
   Loaded on top of /theme.css + /site.css + /directory.css (reused shell). */

.art-categories { margin-top: 24px; }
.art-cat-grid { display: grid; grid-template-columns: 1fr; gap: 12px; list-style: none; padding: 0; margin: 12px 0; }
@media (min-width: 720px) { .art-cat-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1040px) { .art-cat-grid { grid-template-columns: 1fr 1fr 1fr; } }
.art-cat-card { background: var(--card-bg, #fff); border: 1px solid var(--border, #ddd); border-radius: 8px; padding: 0; margin: 0; }
.art-cat-card a { display: block; padding: 16px; color: inherit; text-decoration: none; min-height: 44px; }
.art-cat-card a:hover, .art-cat-card a:focus { background: var(--card-hover, #f5f5f5); }
.art-cat-card h3 { margin: 0 0 6px 0; }
.art-cat-card p { margin: 0; color: var(--text-muted, #555); font-size: 0.95em; }

.art-latest { margin-top: 32px; }
.art-cat-block { margin-top: 24px; }
.art-cat-block h3 { margin: 0 0 8px 0; }
.art-cat-block h3 a { color: inherit; }

.art-list { list-style: none; padding: 0; margin: 0; }
.art-list-item { padding: 12px 0; border-top: 1px solid var(--border-soft, #eee); }
.art-list-item:first-child { border-top: none; }
.art-list-item h3 { margin: 0 0 4px 0; }
.art-list-item h3 a { color: var(--link, #06c); text-decoration: none; }
.art-list-item h3 a:hover, .art-list-item h3 a:focus { text-decoration: underline; }
.art-excerpt { margin: 0; color: var(--text, #333); }
.art-meta { margin: 4px 0 0 0; font-size: 0.85em; color: var(--text-muted, #666); }
.art-meta a { color: inherit; }

.art-journey { background: #f5f8ff; border: 1px solid #cfd8ff; border-radius: 8px; padding: 12px 16px; margin: 16px 0 24px; }
.art-journey-row { display: grid; grid-template-columns: 1fr; gap: 8px; list-style: none; padding: 0; margin: 0; }
@media (min-width: 820px) { .art-journey-row { grid-template-columns: 1fr 1fr 1fr; gap: 16px; } }
.art-journey-step { font-size: 0.95em; }
.art-journey-step strong { display: block; margin-bottom: 2px; }

.art-article { max-width: 760px; margin: 24px 0; }
.art-article h1 { font-size: 2em; margin: 0 0 4px 0; line-height: 1.2; }
.art-byline { color: var(--text-muted, #666); font-size: 0.9em; margin: 0 0 20px 0; }
.art-body { line-height: 1.65; font-size: 1.05em; max-width: 72ch; }
.art-body h2 { margin: 32px 0 8px 0; font-size: 1.4em; }
.art-body h3 { margin: 24px 0 6px 0; font-size: 1.15em; }
.art-body p { margin: 0 0 16px 0; }
.art-body ul, .art-body ol { margin: 0 0 16px 24px; }
.art-body a { color: var(--link, #06c); }
.art-body blockquote { border-left: 3px solid var(--border, #ccc); margin: 16px 0; padding: 4px 16px; color: var(--text-muted, #555); }

.art-medical-notice { background: #fff8e1; border: 1px solid #ffecb3; border-radius: 8px; padding: 12px 16px; margin: 16px 0; font-size: 0.95em; }
.art-medical-notice p { margin: 0; }

.art-ctas { margin: 24px 0; }
.art-cta-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 0 0; }
.art-cta-row .btn { min-height: 44px; }

.art-places { margin: 20px 0; }
.art-place-list { list-style: disc; margin: 8px 0 0 24px; }

.art-sources { margin: 20px 0; font-size: 0.95em; }
.art-source-list li { margin: 6px 0; }
.art-source-type { color: var(--text-muted, #666); font-style: italic; margin-left: 4px; }

.art-related { margin: 32px 0; }
.art-related h2 { font-size: 1.25em; }

.art-browse-other { margin-top: 24px; }

/* Dark mode */
@media (prefers-color-scheme: dark) {
  .art-cat-card { background: #1a1f2e; border-color: #2d3449; }
  .art-cat-card a:hover, .art-cat-card a:focus { background: #212838; }
  .art-cat-card p { color: #a4abc4; }
  .art-journey { background: #0e1a3d; border-color: #2a3a7a; }
  .art-byline, .art-meta, .art-source-type { color: #a4abc4; }
  .art-medical-notice { background: #3a2d10; border-color: #665018; color: #ffe9a8; }
  .art-body blockquote { border-left-color: #4a5168; color: #c4c9db; }
}