/* s4rd-cat.css — CSS cho redesign trang DANH MUC SP (archive-product). DN4-2610-120.
   Nap SAU s4rd-preview.css (tai dung token + base util/header/trust/blk/footer/dock/faq/prose/matrix).
   MOI selector scoped duoi .s4rd-body (giong s4rd-preview) -> khong ro ra trang khac.
   Nguon thiet ke: demo-trang-danh-muc-thuy-luc.html (chu du an duyet). */

/* category hero */
.s4rd-body .chero{padding:16px 0 26px}
.s4rd-body .chero-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:30px;align-items:center}
.s4rd-body .chero h1{font-size:40px;font-weight:800;color:var(--steel-900);line-height:1.05}
.s4rd-body .chero .lead{font-size:17px;color:var(--steel-800);margin:14px 0 0;max-width:620px;line-height:1.7}
.s4rd-body .chero .chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
.s4rd-body .chip{background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 13px;font-size:13px;font-weight:600;color:var(--steel-800);display:inline-flex;gap:6px;align-items:center}
.s4rd-body .chip .i{color:var(--s4-red)}
.s4rd-body .selector{padding:20px}
.s4rd-body .selector h3{font-family:var(--head);font-size:17px;color:var(--steel-900);margin-bottom:4px}
.s4rd-body .selector p{font-size:13px;color:var(--muted);margin:0 0 14px}
.s4rd-body .selector label{display:block;font-size:12.5px;font-weight:600;color:var(--muted);margin:10px 0 5px;text-transform:uppercase;letter-spacing:.4px}
.s4rd-body .selector select{width:100%;padding:11px 13px;border-radius:10px;border:1.5px solid var(--line);background:var(--field);font-family:var(--sans);font-size:14.5px;color:var(--ink)}
.s4rd-body .selector .hintbox{margin-top:14px;background:var(--amber-tint);border:1px solid #f3e2bf;border-radius:10px;padding:11px 13px;font-size:13.5px;color:var(--steel-800);min-height:44px}
.s4rd-body .selector .hintbox b{color:var(--s4-red)}

/* filter bar */
.s4rd-body .filter{display:flex;gap:10px;flex-wrap:wrap;align-items:center;padding:14px 16px;position:sticky;top:0;z-index:20;background:rgba(247,246,244,.94);backdrop-filter:blur(8px);border-radius:12px;margin-bottom:18px;border:1px solid var(--line)}
.s4rd-body .fgroup{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.s4rd-body .fgroup .lbl{font-size:12px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.4px;margin-right:2px}
.s4rd-body .fpill{border:1.5px solid var(--line);background:#fff;border-radius:999px;padding:7px 13px;font-size:13.5px;font-weight:600;color:var(--steel-700);cursor:pointer;transition:.15s;display:inline-block}
.s4rd-body .fpill:hover{border-color:var(--amber)}.s4rd-body .fpill.on{border-color:var(--s4-red);color:var(--s4-red);background:#F3E3E4}
.s4rd-body .fcount{margin-left:auto;font-size:13px;color:var(--muted)}
.s4rd-body .fclear{font-size:13px;color:var(--s4-red);font-weight:600}

/* product grid */
.s4rd-body .grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.s4rd-body .grid .prod{display:flex;flex-direction:column;overflow:hidden;transition:transform .15s,box-shadow .15s;background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}
.s4rd-body .grid .prod:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.s4rd-body .grid .prod .im{aspect-ratio:1.5;background:linear-gradient(160deg,#EFEDE8,#E4E2DD);display:grid;place-items:center;position:relative;overflow:hidden}
.s4rd-body .grid .prod .im img{width:82%;height:82%;object-fit:contain}
.s4rd-body .grid .prod .im .vg{position:absolute;top:10px;left:10px;background:var(--amber);color:#3a2704}
.s4rd-body .grid .prod .bd{padding:16px;display:flex;flex-direction:column;flex:1}
.s4rd-body .grid .prod .cat{font-size:11px;color:var(--s4-red);text-transform:uppercase;letter-spacing:.5px;font-weight:700}
.s4rd-body .grid .prod h3{font-size:18px;color:var(--steel-900);margin:4px 0 8px;font-family:var(--head);font-weight:700;line-height:1.25}
.s4rd-body .grid .prod .specs{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}
.s4rd-body .grid .prod .specs span{font-family:var(--mono);font-size:11.5px;background:var(--field);border:1px solid var(--line);border-radius:7px;padding:3px 8px;color:var(--steel-700)}
.s4rd-body .grid .prod .desc{font-size:13.5px;color:var(--muted);margin:0 0 14px;flex:1}
.s4rd-body .grid .prod .foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto}
.s4rd-body .grid .prod .price{font-family:var(--head);font-weight:700;font-size:15px;color:var(--steel-900)}
.s4rd-body .grid .prod .price small{display:block;font-family:var(--sans);font-weight:400;font-size:11px;color:var(--muted-2)}
.s4rd-body .grid .prod .q{background:var(--s4-red);color:#fff;font-family:var(--head);font-weight:700;font-size:13px;padding:9px 14px;border-radius:9px;text-transform:uppercase}

/* related cats */
.s4rd-body .cats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.s4rd-body .cats a{padding:14px 16px;display:flex;align-items:center;gap:11px;font-family:var(--head);font-weight:700;font-size:15px;color:var(--steel-900);transition:.15s;background:var(--card);border:1px solid var(--line);border-radius:var(--r)}
.s4rd-body .cats a:hover{border-color:var(--s4-red);color:var(--s4-red)}
.s4rd-body .cats a .ic{width:34px;height:34px;border-radius:9px;background:var(--field);display:grid;place-items:center;color:var(--amber-dk);flex:none}

/* category SEO body (giu nguyen noi dung theme map) */
.s4rd-body .s4cat-body{max-width:900px;font-size:16px;color:var(--steel-800);line-height:1.8}
.s4rd-body .s4cat-body h2{font-size:24px;color:var(--steel-900);margin:26px 0 10px}
.s4rd-body .s4cat-body h3{font-size:20px;color:var(--steel-900);margin:22px 0 10px}
.s4rd-body .s4cat-body p{margin:0 0 14px}
.s4rd-body .s4cat-body ul,.s4rd-body .s4cat-body ol{padding-left:20px;margin:0 0 14px}
.s4rd-body .s4cat-body li{margin-bottom:7px}
.s4rd-body .s4cat-body img{border-radius:12px;margin:14px 0;height:auto}
.s4rd-body .s4cat-body table{width:100%;border-collapse:collapse;margin:14px 0;font-size:14.5px}
.s4rd-body .s4cat-body th,.s4rd-body .s4cat-body td{border:1px solid var(--line);padding:9px 12px;text-align:left}
.s4rd-body .s4cat-body th{background:var(--field)}
/* FAQ tu [s4_faq] trong mo ta chuyen muc (giu class goc) */
.s4rd-body .s4faq{max-width:900px}
.s4rd-body .s4faq details{background:var(--card);border:1px solid var(--line);border-radius:12px;margin-bottom:10px;padding:0}
.s4rd-body .s4faq summary{padding:15px 18px;font-family:var(--head);font-weight:700;font-size:16px;color:var(--steel-900);cursor:pointer}
.s4rd-body .s4faq details>*:not(summary){padding:0 18px 16px;color:var(--muted);font-size:14.5px}

/* icon line theo DNA (content-07): khoi noi dung chuyen muc */
.s4rd-body .s4cat-body h2{display:flex;align-items:center;gap:10px}
.s4rd-body .s4cat-body h2 .s4ci-w{flex:none;width:34px;height:34px;border-radius:9px;background:var(--field);display:inline-grid;place-items:center;color:var(--s4-red)}
.s4rd-body .s4cat-body .s4ci{width:20px;height:20px;display:block}
.s4rd-body .s4cat-body .s4cat-note{font-size:13.5px;color:var(--muted);background:var(--field);border:1px solid var(--line);border-left:3px solid var(--s4-red);border-radius:10px;padding:11px 14px;margin:12px 0 16px;line-height:1.65}
.s4rd-body .s4cat-body .s4cat-note b{color:var(--steel-900)}

/* empty state */
.s4rd-body .grid-empty{text-align:center;color:var(--muted);padding:30px}
.s4rd-body .grid-empty a{color:var(--s4-red);font-weight:600}

/* pagination */
.s4rd-body .s4rd-pag{display:flex;gap:8px;justify-content:center;margin-top:26px;flex-wrap:wrap}
.s4rd-body .s4rd-pag a,.s4rd-body .s4rd-pag span{min-width:40px;text-align:center;padding:9px 12px;border-radius:9px;border:1px solid var(--line);background:#fff;font-weight:600;color:var(--steel-700)}
.s4rd-body .s4rd-pag .current{background:var(--s4-red);color:#fff;border-color:var(--s4-red)}

@media(max-width:980px){
  .s4rd-body .chero-grid,.s4rd-body .final{grid-template-columns:1fr}
  .s4rd-body .grid{grid-template-columns:1fr 1fr}.s4rd-body .cats{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .s4rd-body .grid,.s4rd-body .cats{grid-template-columns:1fr}
  .s4rd-body .chero h1{font-size:30px}
  /* bang rong -> cuon ngang trong khoi, khong tran trang */
  .s4rd-body .s4cat-body table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;white-space:nowrap}
  .s4rd-body .s4cat-body h2{font-size:21px}
  .s4rd-body .s4cat-body h2 .s4ci-w{width:30px;height:30px}
}