/* ===========================================================================
   BrainBrick shop — shared styles. Same palette as store.html so the landing
   page and the catalogue feel like one shop.
   =========================================================================== */
:root{
  --brand:#1f3a93; --brand2:#2d7ff9; --ink:#0f1729; --mut:#5b6b86; --line:#e4e9f2;
  --bg:#f5f7fb; --card:#fff; --ok:#16a34a; --warn:#9a3412; --accent:#ff7a00;
  --radius:16px; --shadow:0 10px 30px rgba(17,25,45,.08);
}
*{box-sizing:border-box}
html,body{margin:0}
body{font-family:"Poppins","Cairo",system-ui,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.5;
     /* `clip` not `hidden`: it stops a stray wide element from scrolling the
        whole page sideways WITHOUT turning <body> into a scroll container,
        which would break the sticky header. */
     overflow-x:clip}
html[dir="rtl"] body{font-family:"Cairo","Poppins",system-ui,Arial,sans-serif}
img{max-width:100%}
a{color:var(--brand)}
.wrap{max-width:1150px;width:100%;margin:0 auto;padding:0 16px}
.mut{color:var(--mut)}
h1{font-size:28px;margin:0 0 8px}
h2{font-size:19px;margin:0 0 10px}

/* ------------------------------------------------------------------ header */
.top{background:#0f1729;color:#fff;position:sticky;top:0;z-index:30}
.bar{display:flex;align-items:center;gap:14px;padding-block:11px}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:17px;color:#fff;text-decoration:none;flex:none}
.brand img{width:32px;height:32px;border-radius:8px}
.srch{flex:1;display:flex;min-width:0;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);border-radius:999px;overflow:hidden}
.srch input{flex:1;min-width:0;background:transparent;border:0;color:#fff;font:inherit;padding:9px 15px}
.srch input::placeholder{color:#9fb0cf}
.srch input:focus{outline:none}
.srch button{background:transparent;border:0;color:#fff;font-size:15px;padding:0 13px;cursor:pointer}
.acts{display:flex;align-items:center;gap:12px;flex:none}
.acts .lnk{color:#dbe4f5;text-decoration:none;font-size:14px;font-weight:600;position:relative}
.cart-lnk .badge{position:absolute;top:-8px;inset-inline-end:-12px;background:var(--accent);color:#fff;
                 font-size:11px;font-weight:800;border-radius:999px;padding:1px 6px;min-width:18px;text-align:center}
.lang{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:#fff;border-radius:999px;
      padding:6px 13px;font-size:13px;font-weight:600;text-decoration:none;flex:none}
/* Sits just under the sticky bar rather than inside it. A horizontally
   scrolling strip inside a sticky element gets its own compositing layer,
   which some mobile browsers (and Samsung's long-screenshot tool) then paint
   at the wrong width — the header and footer end up visibly narrower than the
   page. Keeping the scroller out of the sticky layer avoids that entirely. */
.catbar{background:#172038;overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:none;
        position:relative;z-index:29;max-width:100%}
.catbar::-webkit-scrollbar{display:none}
.catbar .wrap{display:flex;gap:4px;padding-block:7px;white-space:nowrap}
.catbar a{color:#aebbd6;text-decoration:none;font-size:13.5px;font-weight:600;padding:6px 12px;border-radius:999px;flex:none}
.catbar a:hover{background:rgba(255,255,255,.07);color:#fff}
.catbar a.on{background:var(--brand2);color:#fff}

/* -------------------------------------------------------------------- cards */
main{padding:20px 0 60px;min-height:50vh}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.pad{padding:20px}
.btn{display:inline-block;background:var(--brand);color:#fff;border:0;border-radius:11px;padding:12px 20px;
     font:inherit;font-weight:700;text-decoration:none;cursor:pointer;text-align:center}
.btn:hover{background:#182e75}
.btn.ghost{background:#fff;color:var(--brand);border:1px solid #d7e0f0}
.btn.wide{display:block;width:100%}
.btn:disabled{background:#c3ccdd;cursor:not-allowed}
.flash{margin:14px 0;border-radius:12px;padding:12px 16px;font-size:14px;font-weight:600}
.flash.ok{background:#e7f6ee;border:1px solid #b6e3c7;color:#0f7a37}
.flash.err{background:#fff7ed;border:1px solid #fed7aa;color:var(--warn)}

/* ------------------------------------------------------------------ banners */
.bnrs{position:relative;margin:16px 0 18px;border-radius:20px;overflow:hidden;background:#13224d;
      min-height:200px;display:grid}
.bnr{grid-area:1/1;position:relative;min-height:200px;display:flex;align-items:center;
     background:linear-gradient(135deg,#1f3a93,#2d7ff9);background-size:cover;background-position:center;
     opacity:0;visibility:hidden;transition:opacity .5s ease}
.bnr.on{opacity:1;visibility:visible}
/* a scrim so white text stays readable over any photograph */
.bnr::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,20,50,.82),rgba(10,20,50,.35))}
html[dir="rtl"] .bnr::before{background:linear-gradient(270deg,rgba(10,20,50,.82),rgba(10,20,50,.35))}
.bnr-in{position:relative;padding:28px 26px;max-width:620px;color:#fff}
.bnr-in h2{font-size:27px;line-height:1.2;margin:0 0 8px;color:#fff;text-shadow:0 1px 10px rgba(0,0,0,.35)}
.bnr-in p{margin:0 0 14px;font-size:15.5px;color:#e6edff;max-width:46ch}
.bnr-code{display:inline-block;background:rgba(255,255,255,.16);border:1px dashed rgba(255,255,255,.55);
          border-radius:10px;padding:5px 12px;font-size:13.5px;font-weight:700;margin-inline-end:10px}
.bnr-code b{letter-spacing:.08em}
.bnr-cta{display:inline-block;background:#fff;color:var(--brand);border-radius:12px;padding:11px 22px;
         font-weight:800;font-size:15px;text-decoration:none;box-shadow:0 6px 18px rgba(0,0,0,.18)}
.bnr-cta:hover{background:#eef2fb}
.bnr-dots{position:absolute;inset-inline:0;bottom:12px;display:flex;gap:7px;justify-content:center;z-index:2}
.bnr-dots button{width:9px;height:9px;border-radius:50%;border:0;padding:0;cursor:pointer;
                 background:rgba(255,255,255,.45)}
.bnr-dots button.on{background:#fff;width:22px;border-radius:999px}

/* ------------------------------------------------------- promoted products */
.promo{margin:0 0 22px}
.promo-hd{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin:0 0 10px}
.promo-hd h2{margin:0;font-size:19px}
.promo-hd a{font-size:13.5px;font-weight:700;text-decoration:none;white-space:nowrap}
.promo-row{display:flex;gap:14px;overflow-x:auto;padding:2px 2px 10px;scroll-snap-type:x mandatory;
           scrollbar-width:thin}
.ptile{flex:0 0 auto;width:190px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);
       border-radius:var(--radius);padding:10px;display:flex;flex-direction:column;gap:6px;
       box-shadow:0 1px 2px rgba(17,25,45,.05)}
.ptile .ph{position:relative;display:block;aspect-ratio:1/1;background:#fff;border-radius:11px;overflow:hidden}
.ptile .ph img{width:100%;height:100%;object-fit:contain}
.ptile .save{position:absolute;top:6px;inset-inline-start:6px;background:var(--accent);color:#fff;
             border-radius:999px;padding:2px 9px;font-size:12px;font-weight:800}
.ptile .nm{font-size:14px;font-weight:700;line-height:1.3;text-decoration:none;color:var(--ink);
           display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ptile .pr{font-size:16px;font-weight:800;color:var(--brand)}
.ptile .pr s{font-size:12.5px;color:var(--mut);font-weight:600;margin-inline-start:6px}
.ptile form{margin:0}
.ptile .btn{padding:9px;font-size:13.5px}

/* -------------------------------------------------------------- hero / meter */
.hero{background:linear-gradient(135deg,#1f3a93,#2d7ff9);color:#fff;border-radius:20px;padding:26px;margin:16px 0 22px}
.hero.slim{padding:16px 22px;margin-top:0}
.hero.slim h1{font-size:20px}
.hero.slim p{font-size:14px}
.hero h1{font-size:26px;margin:0 0 6px}
.hero p{margin:0;color:#dbe7ff;font-size:15px}
.meter{margin-top:16px;background:rgba(255,255,255,.16);border-radius:999px;height:9px;overflow:hidden;max-width:420px}
.meter i{display:block;height:100%;background:#7ff0a8;border-radius:999px;transition:width .3s}
.meter-l{font-size:13px;font-weight:700;margin-top:8px;color:#eaf2ff}

/* --------------------------------------------------------------- toolbar */
.tools{display:flex;gap:10px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin:0 0 14px}
.tools .n{font-size:14px;font-weight:600;color:var(--mut)}
.tools select{padding:9px 12px;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fff}

/* ----------------------------------------------------------------- product grid */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:16px}
.tile{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
      box-shadow:0 1px 2px rgba(17,25,45,.05);display:flex;flex-direction:column;transition:.15s}
.tile:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.tile .ph{display:block;aspect-ratio:1/1;background:#fff;border-bottom:1px solid var(--line)}
.tile .ph img{width:100%;height:100%;object-fit:contain;padding:10px}
.tile .body{padding:12px 13px;display:flex;flex-direction:column;gap:6px;flex:1}
.tile .cat{font-size:11px;font-weight:700;color:var(--brand2);text-transform:uppercase;letter-spacing:.3px}
.tile .nm{font-size:14.5px;font-weight:700;line-height:1.3;text-decoration:none;color:var(--ink)}
.tile .bl{font-size:12.5px;color:var(--mut);flex:1}
.tile .pr{font-size:17px;font-weight:800;color:var(--brand)}
.tile .pr s{font-size:13px;color:var(--mut);font-weight:600;margin-inline-start:6px}
.tile form{margin:0}
.tag{font-size:11px;font-weight:800;border-radius:999px;padding:2px 8px;align-self:flex-start}
.tag.out{background:#fdeaea;color:#b42318}
.tag.low{background:#fff7ed;color:var(--warn)}
.tag.in{background:#e7f6ee;color:var(--ok)}
.tag.deal{background:var(--accent);color:#fff}
.empty{background:#fff;border:1px dashed #cdd7ea;border-radius:var(--radius);padding:44px;text-align:center;color:var(--mut)}

/* ------------------------------------------------------------- product page */
.pdp{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:start}
.gal{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px;box-shadow:var(--shadow)}
.gal .main{aspect-ratio:1/1;display:grid;place-items:center}
.gal .main img{max-height:100%;object-fit:contain}
.thumbs{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}
.thumbs button{width:58px;height:58px;border:2px solid var(--line);border-radius:12px;background:#fff;padding:3px;cursor:pointer}
.thumbs button.on{border-color:var(--brand2)}
.thumbs img{width:100%;height:100%;object-fit:contain}
.spec{width:100%;border-collapse:collapse;font-size:14px;margin-top:6px}
.spec th,.spec td{text-align:start;padding:8px 10px;border-bottom:1px solid var(--line)}
.spec th{width:45%;color:var(--mut);font-weight:600}
.qtyrow{display:flex;align-items:center;gap:10px;margin:14px 0}
.qtyrow button{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;
               font-size:19px;font-weight:700;color:var(--brand);cursor:pointer}
.qtyrow input{width:58px;text-align:center;padding:9px;border:1px solid var(--line);border-radius:10px;font:inherit}
.kit li{margin:4px 0}

/* -------------------------------------------------------------------- cart */
.cartgrid{display:grid;grid-template-columns:1.5fr .9fr;gap:22px;align-items:start}
.citem{display:grid;grid-template-columns:76px 1fr auto;gap:13px;padding:14px 0;border-bottom:1px solid var(--line);align-items:center}
.citem:last-child{border-bottom:0}
.citem .th{width:76px;height:76px;background:#fff;border:1px solid var(--line);border-radius:12px;display:grid;place-items:center}
.citem .th img{max-width:100%;max-height:100%;object-fit:contain;padding:5px}
.citem .nm{font-weight:700;font-size:14.5px;text-decoration:none;color:var(--ink)}
.citem .qf{display:flex;gap:6px;align-items:center;margin-top:6px}
.citem .qf input{width:54px;padding:6px;text-align:center;border:1px solid var(--line);border-radius:8px;font:inherit}
.citem .qf button{background:none;border:0;color:var(--mut);font-size:12px;cursor:pointer;text-decoration:underline;padding:0}
.citem .lt{font-weight:800;color:var(--brand);white-space:nowrap}
.sum{position:sticky;top:96px}
.srow{display:flex;justify-content:space-between;padding:9px 0;font-size:15px;border-bottom:1px dashed var(--line)}
.srow b{font-weight:700}
.srow.free b{color:var(--ok)}
.stot{display:flex;justify-content:space-between;padding-top:14px;font-size:20px;font-weight:800}
.codef{display:flex;gap:8px;margin:12px 0 4px}
.codef input{flex:1;min-width:0;padding:11px 12px;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fbfcfe}

.foot{background:#0f1729;color:#9fb0cf;padding:20px 0;font-size:13px}
.foot .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.foot a{color:#c7d2e8}

[hidden]{display:none!important}
@media (max-width:860px){
  .pdp,.cartgrid{grid-template-columns:1fr}
  .sum{position:static}
  .hide-sm{display:none}
  .bar{flex-wrap:wrap}
  .srch{order:3;flex-basis:100%}
  h1{font-size:23px}
  .bnrs,.bnr{min-height:170px}
  .bnr-in{padding:20px 18px}
  .bnr-in h2{font-size:21px}
  .bnr-in p{font-size:14px;margin-bottom:12px}
  .bnr-cta{padding:10px 18px;font-size:14px}
  .ptile{width:158px}
}