:root{
  --brand:#0058D8; --brand2:#0B2A6B; --accent:#F7650A;
  --ink:#0f172a; --muted:#64748b; --line:#e2e8f0; --bg:#f6f8fb; --card:#fff;
  --ok:#16a34a; --err:#dc2626; --radius:14px;
  --shadow:0 1px 2px rgba(15,23,42,.06),0 8px 24px rgba(15,23,42,.06);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.5}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
.container{max-width:1080px;margin:0 auto;padding:0 16px}
.muted{color:var(--muted)}
.small{font-size:.85rem}
.center{text-align:center}

/* Top bar */
.topbar{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:30}
.topbar .inner{display:flex;align-items:center;gap:18px;height:62px;max-width:1080px;margin:0 auto;padding:0 16px}
.brand{font-weight:800;font-size:1.25rem;color:var(--brand);display:flex;align-items:center;gap:8px}
.brand .dot{width:12px;height:12px;border-radius:4px;background:var(--accent);display:inline-block}
.nav{display:flex;gap:16px;margin-left:auto;align-items:center}
.nav a{color:var(--ink);font-weight:500}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;justify-content:center;
  background:var(--brand);color:#fff;border:0;border-radius:10px;padding:10px 16px;
  font-weight:600;font-size:.95rem;cursor:pointer;transition:.15s;text-decoration:none}
.btn:hover{filter:brightness(1.07);text-decoration:none}
.btn.accent{background:var(--accent)}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn.danger{background:var(--err)}
.btn.sm{padding:6px 12px;font-size:.85rem;border-radius:8px}
.btn.block{width:100%}

/* Cards & grid */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:20px}
.grid{display:grid;gap:18px}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.grid.cols-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:820px){.grid.cols-3,.grid.cols-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:540px){.grid.cols-2,.grid.cols-3,.grid.cols-4{grid-template-columns:1fr}}

.stat{display:flex;flex-direction:column;gap:4px}
.stat .n{font-size:1.9rem;font-weight:800;line-height:1}
.stat .l{color:var(--muted);font-size:.85rem}

/* Forms */
.field{margin-bottom:14px}
.field label{display:block;font-weight:600;font-size:.9rem;margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;padding:11px 12px;border:1px solid var(--line);
  border-radius:10px;font-size:.95rem;font-family:inherit;background:#fff}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--brand);border-color:var(--brand)}
.field textarea{min-height:110px;resize:vertical}
.row{display:flex;gap:14px;flex-wrap:wrap}
.row > .field{flex:1;min-width:160px}

/* Badges & flash */
.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:.78rem;font-weight:600}
.badge.ok{background:#dcfce7;color:#166534}
.badge.warn{background:#fef3c7;color:#92400e}
.badge.off{background:#f1f5f9;color:#475569}
.flash{padding:12px 16px;border-radius:10px;margin-bottom:14px;font-weight:500}
.flash.success{background:#dcfce7;color:#166534}
.flash.error{background:#fee2e2;color:#991b1b}

/* Auth */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;
  background:linear-gradient(135deg,var(--brand),var(--brand2))}
.auth-card{background:#fff;border-radius:18px;box-shadow:0 20px 60px rgba(0,0,0,.25);
  padding:34px;width:100%;max-width:420px}
.auth-card h1{margin:0 0 4px;font-size:1.5rem}

/* Product cards */
.pcard{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column}
.pcard .thumb{aspect-ratio:1;background:#f1f5f9;display:flex;align-items:center;justify-content:center;overflow:hidden}
.pcard .thumb img{width:100%;height:100%;object-fit:cover}
.pcard .body{padding:12px;display:flex;flex-direction:column;gap:6px;flex:1}
.pcard .price{font-weight:800;color:var(--brand)}
.pcard .old{color:var(--muted);text-decoration:line-through;font-size:.85rem;margin-left:6px}

.page-head{display:flex;align-items:center;gap:14px;margin:26px 0 18px;flex-wrap:wrap}
.page-head h1{margin:0;font-size:1.6rem}
.page-head .spacer{margin-left:auto}
.empty{text-align:center;padding:48px 20px;color:var(--muted)}

/* Landing */
.hero{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;padding:72px 16px 80px;text-align:center}
.hero h1{font-size:2.6rem;margin:0 0 14px;line-height:1.1}
.hero p{font-size:1.15rem;opacity:.92;max-width:640px;margin:0 auto 26px}
.hero .cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.feature{display:flex;flex-direction:column;gap:8px}
.feature .ic{width:44px;height:44px;border-radius:12px;background:#eef3ff;color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:1.4rem}

/* Storefront */
.sf-head{color:#fff;padding:40px 16px;text-align:center}
.sf-logo{width:76px;height:76px;border-radius:18px;object-fit:cover;background:#fff;margin:0 auto 12px;display:block}
.sf-foot{padding:30px 16px;text-align:center;color:var(--muted);border-top:1px solid var(--line);margin-top:40px}