:root{
  --bg:#F8FAFC; --surface:#fff; --surface-2:#F1F5F9; --ink:#0F172A; --muted:#64748B;
  --line:#E2E8F0; --brand:#2563EB; --brand-d:#1D4ED8; --brand-soft:#EFF6FF;
  --radius:16px; --shadow:0 1px 2px rgba(15,23,42,.05),0 8px 24px rgba(15,23,42,.06); --wrap:1140px;
  --ok:#059669; --ok-soft:#ECFDF5;
  --logo-filter:brightness(0) saturate(100%) invert(11%) sepia(19%) saturate(1832%) hue-rotate(191deg) brightness(94%) contrast(93%);
  color-scheme:light;
}
html[data-theme=dark]{
  --bg:#0B1220; --surface:#111A2E; --surface-2:#0D1526; --ink:#E9EEF8; --muted:#94A3B8;
  --line:#233150; --brand:#60A5FA; --brand-d:#3B82F6; --brand-soft:#172554;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.35);
  --ok:#34D399; --ok-soft:#064E3B;
  --logo-filter:brightness(0) invert(1);
  color-scheme:dark;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{-webkit-text-size-adjust:100%}
/* عمود مرن بارتفاع الشاشة كحدّ أدنى: بدونه تطفو التذييلة في منتصف الصفحة
   ويبقى تحتها فراغ ميت عندما يكون المحتوى قصيراً (مثل شاشة «لم نجد المنتج»). */
body{margin:0;font-family:var(--font-base);min-height:100vh;min-height:100dvh;
  display:flex;flex-direction:column;
  background:var(--bg);color:var(--ink);font-size:16px;line-height:1.65;overflow-x:hidden;-webkit-font-smoothing:antialiased}
main{flex:1 0 auto}
footer{flex-shrink:0}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
.wrap{max-width:var(--wrap);margin:0 auto;padding-inline:20px;width:100%}
header{position:sticky;top:0;z-index:50;background:var(--surface);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:12px;height:66px}
.brand{display:flex;align-items:center;gap:9px;min-height:44px}
.brand img{height:32px;filter:var(--logo-filter)}
.brand b{font-size:16px}
.tools{display:flex;gap:8px;margin-inline-start:auto;align-items:center}
.tgl{width:42px;height:42px;border-radius:11px;border:1px solid var(--line);background:var(--surface-2);
  display:grid;place-items:center;font-size:13px;font-weight:700;position:relative}
.tgl:hover{border-color:var(--brand)}
.cbadge{position:absolute;top:-5px;inset-inline-end:-5px;background:var(--brand);color:#fff;font-size:11px;
  font-weight:800;min-width:19px;height:19px;border-radius:999px;display:grid;place-items:center;padding:0 4px}
.cbadge:empty{display:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 22px;border-radius:12px;
  font-weight:700;font-size:15px;min-height:48px;border:1px solid var(--line);background:var(--surface);transition:.18s}
.btn:hover{border-color:var(--brand)}
.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn.primary:hover{background:var(--brand-d)}
.crumb{font-size:13.5px;color:var(--muted);padding:18px 0 4px;display:flex;gap:7px;flex-wrap:wrap}
.crumb a:hover{color:var(--brand)}
.pwrap{display:grid;gap:30px;padding:14px 0 40px;grid-template-columns:1fr}
@media(min-width:900px){.pwrap{grid-template-columns:1.05fr 1fr;gap:44px;padding-top:22px}}
.gal{position:relative;border-radius:18px;overflow:hidden;background:var(--surface-2);
  border:1px solid var(--line);aspect-ratio:4/3}
.gal img{width:100%;height:100%;object-fit:cover}
.gal .ico{position:absolute;inset:0;display:grid;place-items:center;font-size:110px;line-height:1}
.gal .bdg{position:absolute;top:14px;inset-inline-start:14px;background:var(--brand);color:#fff;
  font-size:12px;font-weight:800;padding:6px 13px;border-radius:999px;z-index:2}
.pcat{display:inline-block;font-size:12px;font-weight:800;color:var(--brand);background:var(--brand-soft);
  padding:5px 12px;border-radius:999px;margin-bottom:12px}
h1{margin:0 0 8px;font-family:var(--font-display);font-size:clamp(24px,4.4vw,34px);line-height:1.28;letter-spacing:-.01em}
.ptag{color:var(--muted);font-size:15.5px;margin:0 0 16px}
.price{display:flex;align-items:baseline;gap:10px;margin-bottom:6px;flex-wrap:wrap}
.price b{font-size:32px;font-weight:800;font-family:var(--font-base)}
.stock{color:var(--ok);font-weight:700;font-size:13.5px;margin-bottom:18px;display:block}
.desc{color:var(--muted);font-size:15.5px;line-height:1.8;margin:0 0 20px}
.feats{list-style:none;margin:0 0 22px;padding:0;display:grid;gap:10px}
.feats li{display:flex;gap:10px;font-size:14.5px;align-items:flex-start}
.feats li:before{content:'✓';color:var(--ok);font-weight:800;flex:none}
.meta{display:flex;gap:9px;align-items:center;background:var(--surface-2);border:1px solid var(--line);
  border-radius:12px;padding:12px 15px;font-size:14px;margin-bottom:20px}
.buy{display:flex;gap:11px;flex-wrap:wrap;align-items:center}
.qsel{display:flex;align-items:center;border:1px solid var(--line);border-radius:12px;background:var(--surface);height:48px}
.qsel button{width:44px;height:100%;font-size:19px;font-weight:700}
.qsel b{min-width:34px;text-align:center;font-size:16px}
.buy .btn.primary{flex:1;min-width:180px}
@media(max-width:520px){.buy .btn{width:100%;flex:none}.qsel{width:100%;justify-content:center}}
.trustline{display:flex;flex-wrap:wrap;gap:16px;margin-top:20px;font-size:13px;color:var(--muted)}
section.rel{padding:30px 0 60px;border-top:1px solid var(--line)}
section.rel h2{font-size:clamp(19px,3vw,25px);margin:0 0 6px}
section.rel p.sub{color:var(--muted);font-size:14.5px;margin:0 0 20px}
footer{background:var(--surface);border-top:1px solid var(--line);padding:26px 0;text-align:center;color:var(--muted);font-size:13.5px}
.nf{text-align:center;padding:80px 20px}
.nf .em{font-size:60px;margin-bottom:14px}
.opts{margin:0 0 20px}
.opts>span.lbl{display:block;font-size:13px;font-weight:800;color:var(--muted);margin-bottom:9px}
.optgrid{display:grid;gap:9px;grid-template-columns:repeat(auto-fit,minmax(132px,1fr))}
.opt{position:relative;border:2px solid var(--line);border-radius:13px;padding:12px 13px;background:var(--surface);
  text-align:start;transition:.15s;cursor:pointer;min-height:64px}
.opt:hover{border-color:var(--brand)}
.opt.on{border-color:var(--brand);background:var(--brand-soft)}
.opt b{display:block;font-size:14.5px;margin-bottom:3px}
.opt small{display:block;color:var(--muted);font-size:12px}
.opt .pr{display:block;margin-top:5px;font-weight:800;font-size:15px;color:var(--brand)}
.opt .best{position:absolute;top:-9px;inset-inline-end:9px;background:var(--brand);color:#fff;font-size:10.5px;
  font-weight:800;padding:2px 8px;border-radius:999px}