/* ARGREEN Marketplace UI — theme.css
   Color system: white/blue, neutral grays. */
:root{
  --brand:#165DFF;
  --brand-700:#0F49C7;
  --brand-50:#EEF4FF;
  --ok:#16a34a;
  --warn:#f59e0b;
  --danger:#e11d48;
  --bg:#f7f8fb;
  --card:#ffffff;
  --text:#0f172a;
  --muted:#64748b;
  --border:#e5e7eb;
  --radius:16px;
  --shadow:0 10px 30px rgba(2,6,23,.08);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

/* Layout */
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.grid{display:grid;gap:16px}
.grid.cols-4{grid-template-columns:repeat(4,1fr)}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
@media (max-width:1024px){.grid.cols-4{grid-template-columns:repeat(3,1fr)}}
@media (max-width:768px){.grid.cols-3,.grid.cols-4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.grid.cols-2,.grid.cols-3,.grid.cols-4{grid-template-columns:1fr}}

/* Header */
.topbar{background:var(--brand);color:#fff;font-size:13px}
.topbar .container{display:flex;gap:12px;align-items:center;justify-content:space-between;padding:6px 20px}
.lang{display:flex;gap:8px}
.lang button{border:0;background:transparent;color:#fff;opacity:.7;cursor:pointer}
.lang button.active,.lang button:hover{opacity:1;text-decoration:underline}

.header{position:sticky;top:0;background:#fff;border-bottom:1px solid var(--border);z-index:50}
.header .container{display:grid;grid-template-columns:160px 1fr auto;gap:16px;align-items:center;height:74px}
.logo{font-weight:800;font-size:22px;color:var(--brand)}
.search{display:flex;gap:8px}
.search input{flex:1;padding:12px 14px;border:1px solid var(--border);border-radius:12px}
.search button{padding:12px 14px;border-radius:12px;border:1px solid var(--brand);background:var(--brand);color:#fff;cursor:pointer}
.actions{display:flex;align-items:center;gap:10px}
.icon-btn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--border);background:#fff;border-radius:12px;padding:10px 12px;cursor:pointer}
.icon-btn .badge{background:var(--brand);color:#fff;border-radius:10px;padding:0 8px;font-size:12px}

/* Nav / mega-menu */
.nav{border-top:1px solid var(--border);background:#fff}
.nav .container{display:flex;gap:18px;align-items:center;height:54px}
.nav a{padding:8px 10px;border-radius:10px;color:#111}
.nav a:hover{background:var(--brand-50);color:var(--brand)}
.mega{position:relative}
.mega-panel{position:absolute;left:0;top:100%;transform:translateY(6px);background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;display:none;min-width:680px}
.mega:hover .mega-panel{display:block}
.mega-cols{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}

/* Hero */
.hero{background:linear-gradient(140deg,#fff 0%, #eef5ff 70%, #e6f0ff 100%);border-bottom:1px solid var(--border)}
.hero .container{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:center;padding:28px 20px}
.hero h1{font-size:36px;margin:0 0 10px}
.hero p{color:var(--muted);margin:0 0 16px}
.hero .cta{display:flex;gap:10px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 16px;border-radius:12px;border:1px solid var(--brand);background:var(--brand);color:#fff;cursor:pointer}
.btn.secondary{background:#fff;color:var(--brand)}
.badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:8px}
.badge{background:#fff;border:1px dashed var(--border);border-radius:999px;padding:6px 10px;font-size:12px;color:var(--muted)}

/* Cards */
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.card .media{height:200px;background:#eaeef8;display:flex;align-items:center;justify-content:center}
.card .body{padding:12px}
.card h3{font-size:16px;margin:0 0 6px}
.price{font-weight:800}
.rating{color:#f59e0b;font-size:14px}

/* Filters */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0}
.chip{padding:8px 12px;border:1px solid var(--border);border-radius:999px;background:#fff;cursor:pointer}
.chip.active{border-color:var(--brand);color:var(--brand);box-shadow:0 0 0 3px rgba(22,93,255,.12)}

/* Product page */
.product{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;margin:24px 0}
.gallery{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:10px}
.gallery img{border-radius:12px}
.pinfo{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:16px}
.pinfo h1{margin:0 0 10px}
.kv{display:grid;grid-template-columns:120px 1fr;gap:8px;color:var(--muted);font-size:14px;margin:12px 0}
.qty{display:flex;gap:10px;align-items:center;margin:12px 0}
.qty input{width:90px;padding:10px;border:1px solid var(--border);border-radius:10px}
.actions-row{display:flex;gap:10px;flex-wrap:wrap}

/* Sections */
.section{padding:28px 0}
.section h2{margin:0 0 14px}

/* Footer */
.footer{border-top:1px solid var(--border);background:#fff;margin-top:24px}
.footer .container{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:20px;padding:28px 20px}
.footer h4{margin:0 0 10px}
.footer ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.legal{border-top:1px solid var(--border);padding:12px 0;color:var(--muted);font-size:13px;text-align:center}

@media (max-width:980px){.hero .container{grid-template-columns:1fr}.product{grid-template-columns:1fr}.footer .container{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.header .container{grid-template-columns:120px 1fr auto}.footer .container{grid-template-columns:1fr}}