/* =========================================================
   Blog listing & Chủ đề - shared styles
   ---------------------------------------------------------
   Dùng chung cho: blog.html, chu-de.html
   Tokens lấy từ brand.js (không khai báo :root)
   Chrome styles (topbar, header, footer, fab) do theme.css + chrome.js
   ========================================================= */

/* --- Dark-mode component overrides (blog-specific) --- */
[data-theme="dark"] .post-pinned,
[data-theme="dark"] .post-tile,
[data-theme="dark"] .blog-aside-card,
[data-theme="dark"] .hero-card{box-shadow:inset 0 1px 0 rgba(255,255,255,.05)}
[data-theme="dark"] .topic-list a{background:rgba(255,247,235,.05)}
[data-theme="dark"] .cta-inner{background:linear-gradient(135deg,rgba(232,93,4,.16),rgba(244,140,6,.06)),var(--cta-bg)}
[data-theme="dark"] .btn-hotline{background:rgba(244,140,6,.14);border-color:rgba(244,140,6,.5);color:#ffd7ac}
[data-theme="dark"] .btn-hotline:hover{background:rgba(244,140,6,.24);color:#fff}
[data-theme="dark"] .btn-dark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16);color:#fff}
[data-theme="dark"] .btn-dark:hover{background:rgba(255,255,255,.14)}
[data-theme="dark"] .btn-ghost{border-color:rgba(255,247,235,.28);color:var(--ink)}

/* --- Page hero: shell + PC spacing trong theme.css --- */

/* --- Blog layout --- */
.section{padding:2.75rem 0}
.blog-layout{display:grid;grid-template-columns:7fr 3fr;gap:2.25rem;align-items:start}

/* --- Pinned post card --- */
.post-pinned{display:grid;grid-template-columns:1.4fr 1.4fr;gap:0;align-items:stretch;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);overflow:hidden;margin-bottom:1.5rem;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.post-pinned:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(232,93,4,.4)}
.post-pinned-media{position:relative;min-height:0;height:100%;background:var(--bg-deep);overflow:hidden}
.post-pinned-media img{position:absolute;inset:0;display:block;width:100%;height:100%;object-fit:cover}
.post-pinned-body{padding:1.15rem 0.75rem;display:flex;flex-direction:column;justify-content:center}
.pinned-tag{display:inline-flex;align-self:flex-start;align-items:center;gap:.4rem;margin:0 0 .5rem;padding:.3rem .7rem;border-radius:999px;background:rgba(232,93,4,.14);border:1px solid rgba(232,93,4,.4);color:var(--accent);font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase}
.post-pinned h2{margin:0 0 .45rem;font-size:1.25rem;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;text-wrap:auto}
.post-pinned p{margin:0 0 .75rem;color:var(--muted);font-size:.92rem;line-height:1.45;text-align:justify}
.post-pinned .post-tile-meta{margin-top:auto}
.post-pinned .more{font-weight:700;color:var(--accent);font-size:.9rem;margin-top:.45rem}

/* --- Post tiles grid --- */
.post-tiles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.1rem}
.post-tile{display:flex;flex-direction:column;height:100%;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);overflow:hidden;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.post-tile:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:rgba(232,93,4,.4)}
.post-tile-media{display:block;width:100%;aspect-ratio:16/10;background:var(--bg-deep);overflow:hidden;flex-shrink:0}
.post-tile-media img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.post-tile:hover .post-tile-media img{transform:scale(1.04)}
.post-tile-body{padding:1.15rem 1.25rem 1.35rem;display:flex;flex-flow:row wrap;align-items:center;flex:1;min-height:0}
.post-tile-cat{margin:0 0 .35rem;font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);font-weight:700;line-height:1.2;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:0 0 100%}
.post-tile h3{margin:0 0 .45rem;font-size:1.08rem;line-height:1.32;min-height:calc(1.32em * 2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:0 0 100%}
.post-tile-body > p:not(.post-tile-cat):not(.post-tile-meta){margin:0 0 .75rem;color:var(--muted);font-size:.92rem;line-height:1.45;flex:1 1 100%;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-tile-meta{display:flex;gap:.5rem;align-items:center;color:var(--muted);font-size:.82rem;margin:0}
.post-tile-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--muted);opacity:.6}
.post-tile .more{font-weight:700;color:var(--accent);font-size:.9rem;margin-left:auto;white-space:nowrap}

/* --- Sidebar --- */
.blog-aside{display:grid;gap:1.1rem;position:sticky;top:6rem}
.blog-aside-card{padding:1.4rem 1.4rem;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line)}
.blog-aside-card h3{margin:0 0 .5rem;font-size:1.15rem}
.topic-list{list-style:none;margin:0;padding:0;display:grid;gap:.35rem}
.topic-list a{display:flex;align-items:center;justify-content:space-between;gap:.75rem;padding:.65rem .9rem;border-radius:12px;background:rgba(28,25,22,.04);font-weight:600;font-size:.92rem;transition:background .2s ease,color .2s ease}
.topic-list a:hover{background:rgba(232,93,4,.12);color:var(--accent)}
.topic-list a.is-active{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff}
.topic-list a.is-active span{color:#fff;background:rgba(255,255,255,.2);border-color:transparent}
.topic-list a span{font-size:.78rem;font-weight:700;color:var(--muted);background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:.1rem .5rem}
.svc-links{list-style:none;margin:0;padding:0;display:grid;gap:.55rem}
.svc-links a{display:block;padding:.1rem 0;font-weight:600;font-size:.92rem;color:var(--ink);transition:color .2s ease}
.svc-links a:hover{color:var(--accent)}
.svc-links .all{color:var(--accent);font-weight:700}
.aside-cta p{margin:0 0 1rem;color:var(--muted);font-size:.92rem}
.aside-cta .btn{margin-bottom:.6rem}
.btn-block{width:100%}

/* --- Empty state (chu-de) --- */
.cat-empty{padding:2.5rem 1.5rem;text-align:center;border-radius:var(--radius);background:var(--surface);border:1px dashed var(--line);color:var(--muted)}
.cat-empty a{color:var(--accent);font-weight:700}
.back-link{display:inline-flex;align-items:center;gap:.4rem;margin-top:1.75rem;font-weight:700;color:var(--accent)}

/* --- Pagination (blog.html) --- */
.pagination{display:flex;align-items:center;gap:.5rem;margin-top:2rem;justify-content:center}
.pagination-item{display:inline-flex;align-items:center;justify-content:center;min-width:2.5rem;height:2.5rem;padding:0 .75rem;border-radius:12px;font-weight:700;font-size:.95rem;border:1px solid var(--line);background:var(--surface);color:var(--ink);transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease}
.pagination-item:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.pagination-item.is-active{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;border-color:transparent;box-shadow:0 6px 18px rgba(232,93,4,.25)}
.pagination-next{padding:0 1rem;gap:.3rem}

/* --- CTA band --- */
.cta-band{padding-top:0}
.cta-inner{padding:2.25rem;border-radius:var(--radius);text-align:center;background:linear-gradient(135deg,rgba(232,93,4,.12),rgba(244,140,6,.08)),var(--cta-bg);border:1px solid var(--line);box-shadow:var(--shadow)}
.cta-inner h2{font-family:var(--font-display);letter-spacing:-.02em;margin:0 0 .75rem;font-size:var(--fs-h2)}
.cta-inner p{color:var(--muted);max-width:40rem;margin:0 auto 1.5rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:.75rem;justify-content:center}

/* --- Reveal animation --- */
[data-reveal]{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
[data-reveal].is-visible{opacity:1;transform:none}

/* --- Responsive --- */
@media (max-width:900px){
  .blog-layout,.post-tiles{grid-template-columns:1fr}
  .post-pinned{grid-template-columns:1fr}
  .post-pinned-media{aspect-ratio:16/9;height:auto}
  .post-tile h3{min-height:0}
  .blog-aside{position:static}
}
@media (max-width:560px){
  .section{padding:2rem 0}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  [data-reveal]{opacity:1;transform:none}
}