/* OpenTrading — Clean B2B design system */
:root{
  --bg:#f5f7fb;
  --surface:#ffffff;
  --ink:#0f1b2d;
  --ink-2:#33415c;
  --muted:#6b7a90;
  --line:#e6ebf2;
  --line-2:#eef2f7;
  --primary:#2f6fed;
  --primary-d:#2059d0;
  --primary-soft:#eaf1fe;
  --accent:#0fae8e;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(16,27,45,.04), 0 4px 16px rgba(16,27,45,.06);
  --shadow-h:0 6px 24px rgba(16,27,45,.12);
  --maxw:1360px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.5;font-size:15px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:200;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(160%) blur(8px);border-bottom:1px solid var(--line)}
.site-header .container{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:-.02em;color:var(--ink);flex-shrink:0}
.brand .dot{width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,var(--primary),#5b8cff);
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:15px;font-weight:800}
.brand img{height:34px}
.search{flex:1;max-width:620px;display:flex;align-items:center;background:var(--bg);border:1px solid var(--line);
  border-radius:999px;padding:0 6px 0 18px;transition:border-color .15s,box-shadow .15s}
.search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft);background:#fff}
.search input{flex:1;border:none;background:transparent;outline:none;font-size:14.5px;padding:11px 0;color:var(--ink)}
.search button{border:none;background:var(--primary);color:#fff;width:38px;height:38px;border-radius:999px;
  display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;transition:background .15s}
.search button:hover{background:var(--primary-d)}
.nav{display:flex;align-items:center;gap:8px;margin-left:auto;flex-shrink:0}
.nav a{color:var(--ink-2);font-size:14.5px;font-weight:500;padding:8px 12px;border-radius:8px;white-space:nowrap}
.nav a:hover{background:var(--line-2);color:var(--ink)}
.nav a.cta{background:var(--primary);color:#fff}
.nav a.cta:hover{background:var(--primary-d)}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--line);
  background:#fff;color:var(--ink);font-size:14.5px;font-weight:600;padding:11px 20px;border-radius:10px;
  cursor:pointer;transition:all .15s;white-space:nowrap}
.btn:hover{border-color:#d4dded;background:#fafbfe}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-d);border-color:var(--primary-d)}
.btn-lg{padding:14px 28px;font-size:15.5px;border-radius:12px}
.btn-block{width:100%}
.btn-ghost{background:transparent;border-color:transparent;color:var(--primary)}
.btn-ghost:hover{background:var(--primary-soft)}

/* ---------- Layout ---------- */
.layout{display:flex;gap:28px;padding:26px 0 48px;align-items:flex-start}
.sidebar{width:236px;flex-shrink:0;position:sticky;top:92px}
.content{flex:1;min-width:0}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.breadcrumb{padding:18px 0 4px;font-size:13.5px;color:var(--muted)}
.breadcrumb a{color:var(--primary)}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb .sep{margin:0 8px;color:#c2ccdb}

/* ---------- Category sidebar ---------- */
.side-card{padding:8px}
.side-title{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:700;padding:12px 12px 8px}
.side-item{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:10px 12px;border-radius:10px;
  font-size:14px;color:var(--ink-2);cursor:pointer;font-weight:500}
.side-item:hover{background:var(--line-2)}
.side-item.active{background:var(--primary-soft);color:var(--primary);font-weight:700}
.side-item .cnt{font-size:12px;color:var(--muted);background:var(--bg);border-radius:999px;padding:2px 9px}
.side-item.active .cnt{background:#fff;color:var(--primary)}

/* ---------- Page heading / toolbar ---------- */
.page-head{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:18px;flex-wrap:wrap}
.page-head h1{font-size:24px;letter-spacing:-.02em}
.page-head .muted{color:var(--muted);font-size:14px;font-weight:500}

/* ---------- Hero strip ---------- */
.hero{background:linear-gradient(120deg,#11244a,#1c3f7e 60%,#2f6fed);color:#fff;border-radius:18px;
  padding:34px 36px;margin:22px 0 6px;position:relative;overflow:hidden}
.hero h1{font-size:30px;letter-spacing:-.02em;line-height:1.15;max-width:620px}
.hero p{margin-top:12px;color:#cdd9f0;font-size:15.5px;max-width:560px}
.hero .stats{display:flex;gap:28px;margin-top:22px;flex-wrap:wrap}
.hero .stat b{display:block;font-size:24px;font-weight:800}
.hero .stat span{font-size:13px;color:#b9c8e6}
.hero::after{content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:rgba(255,255,255,.06)}

/* ---------- Product grid ---------- */
.p-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.p-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .15s,box-shadow .15s,border-color .15s}
.p-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-h);border-color:#d7e0ee}
.p-thumb{position:relative;aspect-ratio:1;background:#fff;border-bottom:1px solid var(--line-2)}
.p-thumb img{width:100%;height:100%;object-fit:contain;padding:14px}
.p-noimg{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:var(--line-2);
  color:#aab6c8;font-size:13px}
.p-body{padding:12px 14px 14px;display:flex;flex-direction:column;gap:5px}
.p-name{font-size:13.5px;line-height:1.4;color:var(--ink);font-weight:500;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:38px}
.p-art{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.p-supplier{font-size:12px;color:var(--primary);margin-top:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- Empty / pagination ---------- */
.empty{display:none;text-align:center;padding:70px 20px;color:var(--muted)}
.pagination{display:flex;justify-content:center;align-items:center;gap:6px;margin-top:30px}
.page-btn{min-width:38px;height:38px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);
  border-radius:10px;font-size:14px;cursor:pointer;background:#fff;color:var(--ink-2);font-weight:600}
.page-btn:hover{background:var(--line-2)}
.page-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.page-btn.disabled{opacity:.4;pointer-events:none}

/* ---------- Supplier / company ---------- */
.company{padding:26px 28px;display:flex;gap:20px;align-items:flex-start;flex-wrap:wrap}
.company .avatar{width:64px;height:64px;border-radius:16px;background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:800;flex-shrink:0}
.company h1{font-size:23px;letter-spacing:-.02em}
.company .cn{color:var(--muted);font-size:14px;margin-top:2px}
.company .meta{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap}
.chip{display:inline-flex;align-items:center;gap:6px;background:var(--bg);border:1px solid var(--line);
  border-radius:999px;padding:6px 14px;font-size:13px;color:var(--ink-2)}
.chip b{color:var(--ink)}

/* ---------- Tabs ---------- */
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin:22px 0 0}
.tab{padding:12px 18px;cursor:pointer;font-size:14.5px;color:var(--muted);font-weight:600;
  border-bottom:2px solid transparent;margin-bottom:-1px}
.tab:hover{color:var(--ink)}
.tab.active{color:var(--primary);border-bottom-color:var(--primary)}
.panel{display:none;padding:22px 0}
.panel.active{display:block}

/* ---------- Toolbar (filters) ---------- */
.toolbar{display:flex;gap:10px;align-items:center;margin-bottom:18px;flex-wrap:wrap}
.toolbar input,.toolbar select{padding:10px 14px;border:1px solid var(--line);border-radius:10px;font-size:14px;
  outline:none;background:#fff;color:var(--ink)}
.toolbar input{flex:1;min-width:200px}
.toolbar input:focus,.toolbar select:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}
.toolbar .cnt{color:var(--muted);font-size:13.5px;white-space:nowrap;font-weight:600}

/* ---------- Product detail ---------- */
.detail{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start;padding:8px 0 0}
.gallery{position:sticky;top:92px}
.gallery .main{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);
  aspect-ratio:1;display:flex;align-items:center;justify-content:center;overflow:hidden}
.gallery .main img{width:100%;height:100%;object-fit:contain;padding:28px}
.thumbs{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}
.thumb{width:62px;height:62px;border-radius:10px;object-fit:cover;cursor:pointer;border:2px solid var(--line);background:#fff}
.thumb.active{border-color:var(--primary)}
.detail h1{font-size:24px;letter-spacing:-.02em;line-height:1.25}
.detail .art{color:var(--muted);font-size:14px;margin-top:6px}
.detail .desc{font-size:14.5px;line-height:1.65;color:var(--ink-2)}
.specs{border:1px solid var(--line);border-radius:12px;overflow:hidden}
.specs .row{display:grid;grid-template-columns:200px 1fr;font-size:14px}
.specs .row:nth-child(odd){background:var(--bg)}
.specs .row>div{padding:10px 16px}
.specs .row .k{color:var(--muted);font-weight:600}
.section-title{font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:700;margin:24px 0 12px}
.rfq-box{background:var(--primary-soft);border:1px solid #d4e3fd;border-radius:14px;padding:18px 20px;margin-top:20px}
.rfq-box h3{font-size:16px;margin-bottom:4px}
.rfq-box p{font-size:13.5px;color:var(--ink-2);margin-bottom:12px}
.supplier-row{display:flex;align-items:center;gap:14px;padding:14px 16px;background:var(--bg);border:1px solid var(--line);
  border-radius:12px;margin-top:18px}
.supplier-row .avatar{width:46px;height:46px;border-radius:12px;background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-weight:800;flex-shrink:0}
.supplier-row .name{font-weight:700}
.supplier-row .sub{font-size:12.5px;color:var(--muted)}
.supplier-row .go{margin-left:auto;color:var(--primary);font-weight:600;font-size:13.5px}
.s-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#c7d2e2;margin-top:40px}
.site-footer .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;padding:30px 24px}
.site-footer .brand{color:#fff}
.site-footer .links a{color:#aebbcf;font-size:14px;margin-right:22px}
.site-footer .links a:hover{color:#fff}
.site-footer .copy{font-size:13px;color:#8696b0}

/* ---------- Forms / auth ---------- */
.auth-wrap{max-width:460px;margin:48px auto;padding:0 16px}
.form-card{padding:30px 28px}
.form-card h1{font-size:23px;margin-bottom:18px;letter-spacing:-.02em}
label{display:block;font-size:13px;color:var(--ink-2);font-weight:600;margin:14px 0 6px}
input[type=text],input[type=email],input[type=password],select,textarea{
  width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:10px;font-size:15px;outline:none;
  background:#fff;color:var(--ink);font-family:inherit}
input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.muted{color:var(--muted)}
.center-note{color:var(--muted);font-size:14px;margin-top:18px;text-align:center}
.center-note a{color:var(--primary)}
.flash{padding:11px 15px;border-radius:10px;margin-bottom:14px;font-size:14px}
.flash.error{background:#fdecec;color:#b42318;border:1px solid #f7cfcc}
.flash.ok{background:#e7f7ee;color:#157347;border:1px solid #c5ead4}

/* ---------- Data table ---------- */
.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th{text-align:left;color:var(--muted);font-weight:600;padding:10px 12px;border-bottom:1px solid var(--line);font-size:12.5px;text-transform:uppercase;letter-spacing:.04em}
.tbl td{padding:11px 12px;border-bottom:1px solid var(--line-2)}
.tbl tr:hover td{background:var(--bg)}
.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600}
.badge.draft{background:#eef2f7;color:#64748b}
.badge.pending_review{background:#fef3e2;color:#b76e00}
.badge.published{background:#e7f7ee;color:#157347}
.badge.rejected{background:#fdecec;color:#b42318}

/* ---------- Responsive ---------- */
@media (max-width:1080px){.p-grid{grid-template-columns:repeat(3,1fr)}.s-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:920px){
  .sidebar{display:none}
  .detail{grid-template-columns:1fr}.gallery{position:static}
  .specs .row{grid-template-columns:140px 1fr}
}
@media (max-width:680px){
  .container{padding:0 16px}
  .site-header .container{height:60px;gap:12px}
  .brand span.txt{display:none}
  .nav a:not(.cta){display:none}
  .hero{padding:24px 22px}.hero h1{font-size:23px}
  .p-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .s-grid{grid-template-columns:repeat(2,1fr)}
  .grid2{grid-template-columns:1fr}
}