:root{
  --brand:#1f5fbf; --brand-d:#174a96; --ink:#1d2433; --muted:#6b7385; --line:#e3e7ef;
  --bg:#f5f7fb; --card:#fff; --ok:#1e9e5a; --err:#d63c3c; --warn:#d98a0b; --radius:10px;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg);font-size:15px;line-height:1.5}
a{color:var(--brand);text-decoration:none} a:hover{text-decoration:underline}
img{max-width:100%}
.protect-img img{-webkit-user-drag:none;user-drag:none;-webkit-touch-callout:none;user-select:none}
.wrap{max-width:1240px;margin:0 auto;padding:0 16px}
.main{padding:20px 16px 40px;min-height:60vh}
.muted{color:var(--muted)} .small{font-size:13px} .right{text-align:right} .center{text-align:center}
h1{font-size:24px;margin:0 0 16px} h2{font-size:19px;margin:24px 0 12px} h3{font-size:16px;margin:0 0 8px}

/* Top bar */
.topbar{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.topbar-in{display:flex;align-items:center;gap:16px;min-height:64px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--ink)}
.brand img{height:42px;width:auto}
.search{flex:1;min-width:180px}
.search input{width:100%;padding:9px 12px;border:1px solid var(--line);border-radius:20px;background:var(--bg)}
.nav{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.nav a{color:var(--ink);font-weight:500}
.badge{background:var(--err);color:#fff;border-radius:10px;padding:0 7px;font-size:12px}
.maint-bar{background:#c62828;color:#fff;text-align:center;padding:8px;font-size:14px}
.maint-bar a{color:#fff;text-decoration:underline}
.pending-bar{background:#fff4dd;color:#8a5a00;text-align:center;padding:8px;font-size:14px;border-bottom:1px solid #f1d9a4}

/* Buttons & forms */
.btn{display:inline-block;background:var(--brand);color:#fff;border:0;border-radius:8px;padding:10px 18px;font-weight:600;cursor:pointer;font-size:15px}
.btn:hover{background:var(--brand-d);text-decoration:none;color:#fff}
.btn-sm{padding:6px 12px;font-size:13px}
.btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line)} .btn-ghost:hover{background:var(--bg);color:var(--ink)}
.btn-ok{background:var(--ok)} .btn-danger{background:var(--err)}
.btn[disabled]{opacity:.5;cursor:not-allowed}
label{display:block;font-weight:600;margin:12px 0 4px;font-size:14px}
input[type=text],input[type=password],input[type=number],input[type=email],input[type=url],input[type=search],select,textarea{
  width:100%;padding:9px 11px;border:1px solid #cfd5e1;border-radius:8px;font:inherit;background:#fff}
textarea{min-height:80px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}
.check{display:flex;gap:8px;align-items:center;font-weight:500}
.check input{width:auto}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.narrow{max-width:520px;margin:0 auto}
.alert{padding:10px 14px;border-radius:8px;margin-bottom:14px;border:1px solid}
.alert-ok{background:#e9f8ef;border-color:#b8e6cb;color:#146c3d}
.alert-err{background:#fdecec;border-color:#f3c0c0;color:#9b2222}
.alert-warn{background:#fff6e5;border-color:#f2d59a;color:#875b00}

/* Slider */
.slider{position:relative;border-radius:var(--radius);overflow:hidden;margin-bottom:20px;background:#dde4f0;aspect-ratio:1240/380}
.slide{position:absolute;inset:0;opacity:0;transition:opacity .8s}
.slide.on{opacity:1}
.slide img{width:100%;height:100%;object-fit:cover;display:block}
.slide-cap{position:absolute;left:24px;bottom:24px;background:rgba(0,0,0,.45);color:#fff;padding:8px 14px;border-radius:6px;font-size:18px;font-weight:600}
.dots{position:absolute;bottom:10px;left:0;right:0;text-align:center}
.dots button{width:10px;height:10px;border-radius:50%;border:0;margin:0 4px;background:rgba(255,255,255,.6);cursor:pointer}
.dots button.on{background:#fff}

/* Three feature blocks */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:24px}
.feature{display:flex;gap:14px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.feature .ico{width:52px;height:52px;border-radius:12px;display:grid;place-items:center;flex:none}
.feature .ico svg{width:28px;height:28px}
.ico-blue{background:#e5efff;color:#1f5fbf} .ico-green{background:#e3f6ec;color:#1e9e5a} .ico-orange{background:#fff0dd;color:#e07b00}
.feature p{margin:2px 0 0;color:var(--muted);font-size:13px}

/* Categories + products */
.shop{display:grid;grid-template-columns:220px 1fr;gap:20px;align-items:start}
.side{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:8px;position:sticky;top:80px}
.side h3{padding:8px 10px 4px;font-size:13px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}
.side a{display:block;padding:8px 10px;border-radius:6px;color:var(--ink)}
.side a:hover{background:var(--bg);text-decoration:none}
.side a.on{background:var(--brand);color:#fff}
.products{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.pcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;color:var(--ink)}
.pcard:hover{box-shadow:0 4px 16px rgba(20,40,80,.08);text-decoration:none}
.pcard .thumb{aspect-ratio:1;background:#fff;display:grid;place-items:center;overflow:hidden;padding:14px;border-bottom:1px solid var(--line)}
.pcard .thumb img{width:100%;height:100%;object-fit:contain;transition:transform .25s}
.pcard:hover .thumb img{transform:scale(1.04)}
.pcard .body{padding:10px 12px 14px;display:flex;flex-direction:column;gap:4px;flex:1}
.pcard .name{font-weight:600;font-size:14px;line-height:1.35}
.price{color:var(--err);font-weight:700}
.login-price{font-size:13px;color:var(--muted)}
.stock-out{color:var(--err);font-size:12px;font-weight:600}
.stock-in{color:var(--ok);font-size:12px;font-weight:600}

/* Product detail */
.pdetail{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.pdetail .img{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.pdetail .img img{width:100%;aspect-ratio:1;object-fit:contain;display:block}
.product-layout{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:28px;align-items:start}
.product-view{grid-template-columns:minmax(220px,340px) minmax(0,1fr);gap:32px}
.recs{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px;display:flex;flex-direction:column;gap:10px;position:sticky;top:80px}
.recs h3{margin:0 0 2px;font-size:15px}
.rec{display:flex;gap:10px;align-items:center;color:var(--ink);padding:6px;border-radius:8px}
.rec:hover{background:var(--bg);text-decoration:none}
.rec img{width:64px;height:64px;object-fit:contain;background:#fff;border:1px solid var(--line);padding:4px;border-radius:6px;flex:none}
.rec-body{display:flex;flex-direction:column;gap:2px;min-width:0}
.rec-name{font-size:13px;font-weight:600;line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.thumbs{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.gthumb{width:68px;height:68px;padding:3px;border:2px solid var(--line);border-radius:8px;background:#fff;cursor:pointer}
.gthumb img{width:100%;height:100%;object-fit:contain;display:block}
.gthumb.on,.gthumb:hover{border-color:var(--brand)}
.img-tip{background:#eef4ff;border:1px solid #c9dafc;border-radius:8px;padding:10px 12px;font-size:13px;line-height:1.6;margin:8px 0}
.seo-box{margin:20px 0 4px;border:1px solid var(--line);border-radius:8px;padding:10px 14px;background:#fafbfd}
.seo-box summary{cursor:pointer;font-weight:600}
.char-count{font-size:12px;color:var(--muted);text-align:right}
.cat-intro{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:12px 16px;margin-bottom:16px;line-height:1.65}
.cat-intro p{margin:0 0 8px}.cat-intro p:last-child{margin:0}
.gallery-admin{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:8px}
.gitem{width:130px;border:1px solid var(--line);border-radius:8px;padding:6px;background:#fff}
.gitem img{width:100%;height:100px;object-fit:contain;display:block;margin-bottom:4px}
.gitem .check{margin:2px 0;font-weight:500}
.qty{width:90px !important}

/* Tables */
.table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.table th,.table td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
.table th{background:#f0f3f8;font-size:13px;color:#4a5265}
.table tr:last-child td{border-bottom:0}
.table img.tiny{width:48px;height:48px;object-fit:contain;border-radius:6px;background:#fff;border:1px solid var(--line);padding:2px}
.table-wrap{overflow-x:auto}
.tag{display:inline-block;padding:2px 10px;border-radius:12px;font-size:12px;font-weight:700}
.tag-new{background:#fde3e3;color:#c62828} .tag-done{background:#dcf5e6;color:#17824a}
.tag-grey{background:#eceff4;color:#5a6275} .tag-warn{background:#fff0d6;color:#9a6200}
.total-row td{font-weight:700;font-size:16px}
.actions{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.actions form{margin:0}

/* Admin */
.admin-body{display:grid;grid-template-columns:220px 1fr;min-height:100vh}
.admin-side{background:#1b2333;color:#cdd5e4;padding:16px 10px}
.admin-side .logo{color:#fff;font-weight:700;padding:6px 10px 16px;display:block;font-size:17px}
.admin-side a{display:block;color:#cdd5e4;padding:9px 12px;border-radius:6px}
.admin-side a:hover,.admin-side a.on{background:#2c3850;color:#fff;text-decoration:none}
.admin-side hr{border:0;border-top:1px solid #2c3850;margin:10px 0}
.admin-main{padding:24px;min-width:0}
.admin-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.admin-head h1{margin:0}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:20px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.stat b{display:block;font-size:26px}
.filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.filters input,.filters select{width:auto}
.attr-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:start}
@media (max-width:1100px){.attr-grid{grid-template-columns:1fr}}
.vrow{display:grid;grid-template-columns:1fr 1fr 130px 110px 130px 40px;gap:8px;margin-bottom:8px;align-items:center}

/* Footer */
.footer{background:#1b2333;color:#cdd5e4;margin-top:24px;font-size:13px;line-height:1.5}
.footer a{color:#9cc1ff}
.footer .muted{color:#94a0b8}
.footer-in{display:grid;grid-template-columns:minmax(180px,1fr) 2fr auto;gap:8px 28px;align-items:start;padding:16px}
.f-brand{display:flex;flex-direction:column}
.f-brand strong{font-size:14px;color:#fff}
.f-contact{display:flex;flex-wrap:wrap;gap:2px 16px}
.f-links{display:flex;flex-wrap:wrap;gap:4px 14px;justify-content:flex-end}
.f-links a{color:#cdd5e4}
.copyright{border-top:1px solid #2c3850;padding:8px 16px;font-size:12px;color:#94a0b8}
.page-content{line-height:1.7;max-width:820px}
.page-content h3{margin:22px 0 6px}

/* Responsive */
@media (max-width:1100px){
  .product-layout{grid-template-columns:1fr}
  .recs{position:static;display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
  .recs h3,.recs > a.small{grid-column:1/-1}
  .rec{flex-direction:column;align-items:stretch;text-align:left;border:1px solid var(--line)}
  .rec img{width:100%;height:auto;aspect-ratio:1}
}
@media (max-width:1000px){ .products{grid-template-columns:repeat(3,1fr)} .stats{grid-template-columns:repeat(2,1fr)} }
@media (max-width:760px){
  .shop,.pdetail,.product-view,.grid2,.features{grid-template-columns:1fr}
  .product-view .img{max-width:340px;margin:0 auto}
  .recs{grid-template-columns:repeat(2,1fr)}
  .side{position:static}
  .products{grid-template-columns:repeat(2,1fr);gap:10px}
  .footer-in{grid-template-columns:1fr;gap:8px}
  .f-links{justify-content:flex-start}
  .admin-body{grid-template-columns:1fr}
  .admin-side{display:flex;flex-wrap:wrap;gap:2px;padding:8px}
  .admin-side .logo{width:100%;padding-bottom:6px}
  .admin-side hr{display:none}
  .vrow{grid-template-columns:1fr 1fr}
}

/* Print (invoice) */
@media print{
  .no-print{display:none !important}
  body{background:#fff}
}