:root{--bg:#f6f7f9;--card:#fff;--text:#1d2330;--muted:#6b7385;--brand:#0f766e;--brand-d:#0b5a54;--line:#e3e7ee;--danger:#b42318;--r:12px}
*{box-sizing:border-box}
body{margin:0;font-family:'Hind Siliguri',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}
a{color:var(--brand);text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1100px;margin:0 auto;padding:0 16px}
main.wrap{padding-top:20px;padding-bottom:40px;min-height:60vh}
.site-header{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.bar{display:flex;align-items:center;gap:20px;height:60px}
.logo{font-weight:600;font-size:20px;color:var(--text)}
.nav{display:flex;gap:16px;flex:1;overflow-x:auto;white-space:nowrap}
.nav a{color:var(--muted)}
.cart-link{font-weight:500;color:var(--text)}
.badge{display:inline-block;min-width:22px;padding:0 6px;border-radius:11px;background:var(--brand);color:#fff;font-size:13px;text-align:center}
.hero{background:linear-gradient(135deg,#0f766e,#115e59);color:#fff;border-radius:var(--r);padding:36px 24px;margin-bottom:18px;text-align:center}
.hero h1{margin:0 0 6px;font-size:30px}
.hero p{margin:0 0 16px;opacity:.9}
.search{width:100%;max-width:440px;padding:11px 14px;border:0;border-radius:999px;font:inherit}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.chip{border:1px solid var(--line);background:var(--card);padding:5px 14px;border-radius:999px;font:inherit;cursor:pointer}
.chip.active{background:var(--brand);color:#fff;border-color:var(--brand)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column}
.card img{aspect-ratio:4/3;object-fit:cover;width:100%}
.card-body{padding:12px;display:flex;flex-direction:column;gap:6px;flex:1}
.card h3{margin:0;font-size:16px;font-weight:500}
.card h3 a{color:var(--text)}
.price{font-weight:600;color:var(--brand)}
.price s{color:var(--muted);font-weight:400;font-size:14px}
.price.big{font-size:26px}
.btn{display:inline-block;border:0;background:var(--brand);color:#fff;padding:9px 16px;border-radius:8px;font:inherit;font-weight:500;cursor:pointer;text-align:center}
.btn:hover{background:var(--brand-d)}
.btn:disabled{background:#c5ccd6;cursor:not-allowed}
.btn.alt{background:#fff;color:var(--brand);border:1px solid var(--brand)}
.btn.danger{background:var(--danger)}
.card .btn{margin-top:auto}
.link-btn{background:none;border:0;color:var(--danger);cursor:pointer;font:inherit}
.product{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.product img{border-radius:var(--r);border:1px solid var(--line);width:100%}
.qty-row{display:flex;gap:10px;align-items:center}
.qty-row input,.cart-qty{width:80px}
input,select,textarea{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:8px;font:inherit;background:#fff}
.form label{display:block;margin-bottom:12px;font-weight:500}
.form label input,.form label select,.form label textarea{margin-top:4px;font-weight:400}
fieldset{border:1px solid var(--line);border-radius:8px;margin:0 0 14px;padding:8px 12px}
.radio{display:flex;gap:8px;align-items:center;font-weight:400!important;margin:4px 0!important}
.radio input{width:auto;margin:0!important}
.checkout{display:grid;grid-template-columns:1.2fr 1fr;gap:24px;align-items:start}
.summary{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px}
.summary .row{display:flex;justify-content:space-between;gap:10px;padding:6px 0;border-bottom:1px dashed var(--line)}
.summary .total{font-weight:600;font-size:18px;border:0}
.table-wrap{overflow-x:auto}
.table{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--line);border-radius:var(--r)}
.table th,.table td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
.table th{background:#f0f3f7;font-weight:500;font-size:14px}
.right{text-align:right}.big{font-size:20px}.muted{color:var(--muted)}
.notice{background:#e6f4f1;border:1px solid #b6e0d8;padding:10px 14px;border-radius:8px;margin-bottom:14px}
.notice.error{background:#fdecea;border-color:#f5c2bd;color:var(--danger)}
.tag{display:inline-block;padding:1px 10px;border-radius:999px;font-size:13px;background:#eef1f5}
.s-pending{background:#fff4d6}.s-confirmed,.s-processing{background:#dbeafe}.s-shipped{background:#e0e7ff}.s-delivered,.p-paid{background:#d9f5e3}.s-cancelled,.p-failed{background:#fde2e0}
.content{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px}
.site-footer{border-top:1px solid var(--line);background:var(--card);padding:18px 0;text-align:center}
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,40px);background:#1d2330;color:#fff;padding:10px 18px;border-radius:999px;opacity:0;transition:.25s;pointer-events:none;z-index:50}
.toast.show{opacity:1;transform:translate(-50%,0)}
/* admin */
.admin-nav{background:#14213d;color:#fff}
.admin-nav .wrap{display:flex;gap:18px;align-items:center;height:54px;overflow-x:auto}
.admin-nav a{color:#cfd8ea;white-space:nowrap}.admin-nav a:hover{color:#fff}.admin-nav .sp{flex:1}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;margin-bottom:20px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px}
.stat b{display:block;font-size:26px}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px;margin-bottom:18px}
.cols{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.inline{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.inline select,.inline input{width:auto}
.login{max-width:360px;margin:60px auto}
@media (max-width:760px){.product,.checkout,.cols{grid-template-columns:1fr}.hero h1{font-size:24px}.nav{display:none}}