/* Bổ sung cho newspaper.css: trang chủ, chuyên mục, thẻ bài, điều hướng. */
a { color: var(--accent); }
.top-nav { position: sticky; top: 0; z-index: 10; padding: 0; }
.top-nav .nav-content { padding-top: 10px; padding-bottom: 8px; }
a.brand-logo { color: #fff; text-decoration: none; }
.site-nav { display: flex; gap: 4px 18px; overflow-x: auto; white-space: nowrap; padding-top: 6px; padding-bottom: 10px; scrollbar-width: none; }
.site-nav::-webkit-scrollbar { display: none; }
.site-nav a { color: #cbd5e1; text-decoration: none; font-weight: 600; padding-bottom: 2px; border-bottom: 2px solid transparent; }
.site-nav a:hover, .site-nav a.on { color: #fff; border-bottom-color: #60a5fa; }

/* Trang chủ */
.masthead { text-align: center; padding: 40px 0 28px; border-bottom: 3px double var(--text-main); margin-bottom: 28px; font-family: var(--font-sans); }
.masthead h1 { font-size: 40px; font-weight: 800; letter-spacing: -0.5px; line-height: 1.15; }
.masthead p { color: var(--text-muted); margin: 10px 0 18px; font-family: var(--font-serif); font-style: italic; }
.topic-chips { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.topic-chips a { font-size: 13px; font-weight: 600; text-decoration: none; color: var(--c); border: 1px solid color-mix(in srgb, var(--c) 35%, transparent); background: color-mix(in srgb, var(--c) 8%, #fff); padding: 4px 12px; border-radius: 99px; }
.topic-chips b { margin-left: 4px; opacity: .7; }
.featured { margin-bottom: 40px; }

.block-title { font-size: 20px; margin: 0; padding: 0; border: 0; display: block; }
.block-title a { color: inherit; text-decoration: none; }
.topic-block { margin: 0 0 44px; }
.topic-head { display: flex; align-items: baseline; gap: 12px; border-top: 4px solid var(--c); padding-top: 12px; margin-bottom: 16px; font-family: var(--font-sans); }
.topic-head .block-title a { color: var(--c); }
.topic-head span { color: var(--text-light); font-size: 13px; }
.topic-head .more { margin-left: auto; font-size: 14px; font-weight: 600; text-decoration: none; color: var(--c); white-space: nowrap; }
.empty { color: var(--text-light); font-family: var(--font-sans); font-size: 15px; }

/* Thẻ bài */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.card-grid--wide { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); margin-bottom: 48px; }
.card { display: flex; flex-direction: column; background: var(--bg-paper); border: 1px solid var(--border-color); border-radius: 10px; overflow: hidden; color: var(--text-main); text-decoration: none; transition: box-shadow .2s, transform .2s; }
.card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.card-media { aspect-ratio: 1200 / 628; background: #0f172a; overflow: hidden; }
.card-media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.card-media--empty { display: flex; align-items: flex-end; padding: 14px; background: linear-gradient(135deg, var(--c), color-mix(in srgb, var(--c) 55%, #0f172a)); }
.card-media--empty span { color: #fff; font-family: var(--font-sans); font-weight: 800; font-size: 18px; opacity: .9; }
.card-body { padding: 16px 18px 18px; display: flex; flex-direction: column; gap: 6px; flex: 1; font-family: var(--font-sans); }
.card-topic { font-size: 11px; font-weight: 800; letter-spacing: 1px; text-transform: uppercase; color: var(--c); }
.card-draft { align-self: flex-start; font-size: 11px; font-weight: 700; color: #991b1b; background: #fee2e2; padding: 1px 8px; border-radius: 4px; }
.card h3 { margin: 0; font-size: 18px; line-height: 1.35; color: var(--text-main); }
.card p { margin: 0; font-family: var(--font-serif); font-size: 14.5px; line-height: 1.6; color: var(--text-muted); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.card-meta { margin-top: auto; padding-top: 6px; font-size: 12.5px; color: var(--text-light); }
.card--big { display: grid; grid-template-columns: 1.35fr 1fr; }
.card--big .card-media { aspect-ratio: auto; min-height: 300px; }
.card--big .card-body { padding: 28px; justify-content: center; }
.card--big h3 { font-size: 28px; line-height: 1.25; }
.card--big p { font-size: 16.5px; -webkit-line-clamp: 5; }
@media (max-width: 768px) {
  .top-nav .date-badge { display: none; }
  .masthead h1 { font-size: 28px; }
  .card--big { grid-template-columns: 1fr; }
  .card--big .card-media { min-height: 0; aspect-ratio: 1200 / 628; }
  .card--big .card-body { padding: 18px; }
  .card--big h3 { font-size: 22px; }
}

/* Trang chuyên mục / tag / lưu trữ */
.topic-hero { padding: 36px 0 24px; margin-bottom: 28px; border-bottom: 2px solid var(--text-main); font-family: var(--font-sans); }
.topic-hero[style] { border-bottom-color: var(--c); }
.topic-hero .eyebrow { font-size: 12px; font-weight: 800; letter-spacing: 1.5px; text-transform: uppercase; color: var(--c, var(--text-light)); }
.topic-hero h1 { font-size: 36px; font-weight: 800; line-height: 1.2; margin: 6px 0 8px; }
.topic-hero p { color: var(--text-muted); margin: 0 0 8px; font-family: var(--font-serif); }
.topic-hero .count { font-size: 13px; color: var(--text-light); }
.archive ul { list-style: none; margin: 10px 0 32px; font-family: var(--font-sans); font-size: 15.5px; }
.archive li { display: flex; flex-wrap: wrap; gap: 4px 14px; align-items: baseline; padding: 10px 0; border-bottom: 1px solid var(--border-color); }
.archive time { color: var(--text-light); font-size: 13px; min-width: 84px; }
.archive li > a:not(.pill) { color: var(--text-main); font-weight: 600; text-decoration: none; flex: 1; min-width: 200px; }
.archive li > a:not(.pill):hover { color: var(--accent); }
.pill { font-size: 11.5px; font-weight: 700; color: var(--c); background: color-mix(in srgb, var(--c) 10%, #fff); padding: 2px 9px; border-radius: 99px; text-decoration: none; }

/* Trang bài viết */
.crumbs { font-family: var(--font-sans); font-size: 13px; color: var(--text-light); margin-bottom: 18px; }
.crumbs a { color: var(--text-muted); text-decoration: none; }
a.category-pill { text-decoration: none; }
.post-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 36px; font-family: var(--font-sans); }
.post-tags a { font-size: 13px; text-decoration: none; background: var(--tag-bg); color: var(--tag-text); padding: 4px 10px; border-radius: 6px; font-weight: 600; }
.post-pager { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 0 0 40px; font-family: var(--font-sans); }
.post-pager a { display: block; padding: 16px 18px; border: 1px solid var(--border-color); border-radius: 8px; background: var(--bg-paper); color: var(--text-main); text-decoration: none; font-weight: 600; font-size: 15px; line-height: 1.4; }
.post-pager a:hover { border-color: var(--accent); }
.post-pager a.next { text-align: right; }
.post-pager small { display: block; color: var(--text-light); font-weight: 500; font-size: 12px; margin-bottom: 4px; }
@media (max-width: 600px) { .post-pager { grid-template-columns: 1fr; } .post-pager a.next { text-align: left; } }
.related { margin-bottom: 56px; }
.related .block-title { margin-bottom: 16px; font-family: var(--font-sans); }

/* Bài viết Markdown */
.md-body img { max-width: 100%; height: auto; border-radius: 8px; }
.md-body blockquote { background: var(--quote-bg); border-left: 4px solid #0f172a; padding: 18px 24px; margin: 28px 0; border-radius: 0 8px 8px 0; font-style: italic; }
.md-body ul, .md-body ol { padding-left: 26px; margin-bottom: 22px; }
.md-body pre { background: #0f172a; color: #e2e8f0; padding: 16px; border-radius: 8px; overflow-x: auto; font-family: var(--font-mono); font-size: 14px; margin-bottom: 22px; }
.md-body code { font-family: var(--font-mono); font-size: .88em; }

/* Tìm kiếm */
.search-input { width: 100%; margin-top: 14px; padding: 14px 16px; font: 500 17px var(--font-sans); border: 2px solid var(--border-dark); border-radius: 10px; background: #fff; }
.search-input:focus { outline: none; border-color: var(--accent); }
.search-results { list-style: none; font-family: var(--font-sans); margin-bottom: 60px; }
.search-results li { padding: 14px 0; border-bottom: 1px solid var(--border-color); }
.search-results a { font-weight: 700; font-size: 17px; text-decoration: none; }
.search-results p { margin: 4px 0 0; font-size: 14px; color: var(--text-muted); }
.search-results small { color: var(--text-light); }

/* Bản nháp (chỉ thấy ở bản xem trước) */
.draft-ribbon { background: #991b1b; color: #fff; text-align: center; font: 700 13px var(--font-sans); letter-spacing: 1px; padding: 8px; margin: 16px 0 0; border-radius: 6px; }