:root{
  --bg:#fff; --ink:#1a1a1a; --muted:#9a948c; --line:#ececec;
  --card:#fff; --accent:#b08d57; --wa:#25d366; --radius:6px;
  --sidebar-w:208px; --header-h:52px;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  line-height:1.45; -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.muted{color:var(--muted)}

/* ── header ─────────────────────────────────────────── */
.site-header{
  position:sticky;top:0;z-index:40;height:var(--header-h);
  display:flex;align-items:center;gap:8px;padding:0 14px;
  background:#fff;border-bottom:1px solid var(--line);
}
.menu-btn{display:none;background:none;border:0;padding:6px;margin-left:-6px;color:var(--ink);cursor:pointer}
.brand{font-size:22px;font-weight:800;letter-spacing:.5px}
.hdr-end{flex:1}

/* ── layout ─────────────────────────────────────────── */
.layout{display:flex;align-items:flex-start;max-width:1500px;margin:0 auto}
.sidebar{
  width:var(--sidebar-w);flex:0 0 var(--sidebar-w);
  position:sticky;top:var(--header-h);align-self:flex-start;
  height:calc(100vh - var(--header-h));overflow-y:auto;
  border-right:1px solid var(--line);padding:10px 0;
}
.cat-list{display:flex;flex-direction:column}
.cat-list a{
  padding:10px 18px;font-size:14px;color:#444;border-left:3px solid transparent;
}
.cat-list a:hover{background:#faf9f7}
.cat-list a.active{color:var(--ink);font-weight:600;border-left-color:var(--accent);background:#faf8f5}
.cat-list .count{color:var(--muted);font-size:12px;font-weight:400;margin-left:5px}

main{flex:1;min-width:0;padding:14px 16px 30px}
.loading,.empty{text-align:center;color:var(--muted);padding:60px 16px}

/* ── category sections ──────────────────────────────── */
.cat-sec{scroll-margin-top:calc(var(--header-h) + 8px);margin-bottom:26px}
.cat-head{
  display:flex;align-items:baseline;gap:8px;
  padding:6px 2px 12px;border-bottom:1px solid var(--line);margin-bottom:14px;
}
.cat-head h2{font-size:17px;font-weight:700;margin:0;letter-spacing:.3px}
.cat-head .count{color:var(--muted);font-size:13px}

/* ── product grid (dense) ───────────────────────────── */
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
@media(min-width:520px){.grid{grid-template-columns:repeat(3,1fr)}}
@media(min-width:780px){.grid{grid-template-columns:repeat(4,1fr);gap:14px}}
@media(min-width:1120px){.grid{grid-template-columns:repeat(5,1fr)}}
.card{display:block}
.card .ph{aspect-ratio:1/1;background:#f3f0eb;overflow:hidden;border-radius:var(--radius)}
.card .ph img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .ph img{transform:scale(1.04)}
.card .nm{font-size:13px;line-height:1.35;margin:7px 2px 0;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.card .pr{font-size:13px;color:var(--accent);font-weight:600;margin:2px 2px 0}

/* ── product detail ─────────────────────────────────── */
.detail{max-width:780px;margin:0 auto}
.back{display:inline-block;color:var(--muted);font-size:14px;margin:2px 0 12px}
.gallery{border-radius:var(--radius);overflow:hidden;background:#f3f0eb}
.gallery .main{aspect-ratio:1/1}
.gallery .main img{width:100%;height:100%;object-fit:cover}
.thumbs{display:flex;gap:8px;overflow-x:auto;margin-top:8px;padding-bottom:4px}
.thumbs img{width:62px;height:62px;object-fit:cover;border-radius:5px;border:2px solid transparent;cursor:pointer;flex:0 0 auto}
.thumbs img.active{border-color:var(--ink)}
.detail h1{font-size:23px;margin:18px 0 6px}
.price{font-size:20px;color:var(--accent);font-weight:700;margin:0 0 14px}
.specs{border-top:1px solid var(--line);margin-top:14px}
.specs .row{display:flex;gap:12px;padding:11px 2px;border-bottom:1px solid var(--line);font-size:14px}
.specs .row .k{width:92px;color:var(--muted);flex:0 0 auto}
.desc{margin-top:16px;font-size:15px;color:#3a3a3a}
.desc :where(p,ul){margin:0 0 10px}
.cta{
  display:flex;align-items:center;justify-content:center;gap:10px;width:100%;
  background:var(--wa);color:#fff;font-size:16px;font-weight:600;
  padding:15px;border-radius:10px;margin:22px 0 8px;border:0;cursor:pointer;
}
.cta svg{width:22px;height:22px}

/* ── floating whatsapp ──────────────────────────────── */
.wa-fab{
  position:fixed;right:16px;bottom:max(16px,env(safe-area-inset-bottom));z-index:50;
  width:54px;height:54px;border-radius:50%;background:var(--wa);color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 18px rgba(0,0,0,.22);
}

/* ── footer ─────────────────────────────────────────── */
.site-footer{border-top:1px solid var(--line);margin-top:10px;padding:26px 16px calc(34px + env(safe-area-inset-bottom));text-align:center}
.brand-sm{font-size:17px;font-weight:800;margin-bottom:3px}

/* ── mobile: sidebar becomes a drawer ───────────────── */
@media(max-width:719px){
  .menu-btn{display:inline-flex}
  .brand{position:absolute;left:50%;transform:translateX(-50%)}
  .sidebar{
    position:fixed;top:0;left:0;height:100vh;z-index:60;background:#fff;
    width:74vw;max-width:300px;transform:translateX(-100%);
    transition:transform .25s ease;box-shadow:2px 0 16px rgba(0,0,0,.12);
    padding-top:14px;
  }
  body.nav-open .sidebar{transform:none}
  .scrim{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:55;border:0}
}