:root{--bg:#f6f7fb;--card:#fff;--ink:#1a1d29;--muted:#6b7280;--brand:#4f46e5;--brand2:#7c3aed;--line:#e8eaf1;--green:#16a34a;--wa:#25d366}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Segoe UI',system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--ink);line-height:1.5}
header{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;padding:14px 16px;position:sticky;top:0;z-index:10}
.hwrap{max-width:1080px;margin:0 auto;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.logo{font-weight:800;font-size:20px;letter-spacing:.3px;cursor:pointer}
.logo small{display:block;font-weight:400;font-size:11px;opacity:.85;letter-spacing:.6px}
.spacer{flex:1}
.btn{display:inline-block;border:none;cursor:pointer;border-radius:10px;padding:10px 18px;font-weight:700;font-size:14px;text-decoration:none;transition:.15s}
.btn-primary{background:#fff;color:var(--brand)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 14px rgba(0,0,0,.2)}
.btn-brand{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff}
.btn-wa{background:var(--wa);color:#fff;display:inline-flex;align-items:center;gap:8px}
.btn-ghost{background:#eef0f7;color:var(--ink)}
.btn:disabled{opacity:.5;cursor:not-allowed}
main{max-width:1080px;margin:0 auto;padding:18px 16px 60px}
.toolbar{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px;display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px}
.toolbar input[type=text],.toolbar input[type=search]{flex:1;min-width:200px;padding:11px 14px;border:1.5px solid var(--line);border-radius:10px;font-size:15px}
.toolbar input:focus{outline:none;border-color:var(--brand)}
.pills{display:flex;gap:8px;flex-wrap:wrap;width:100%}
.pill{border:1.5px solid var(--line);background:#fff;border-radius:999px;padding:7px 15px;font-size:13px;cursor:pointer;font-weight:600;color:var(--muted)}
.pill.active{background:var(--brand);border-color:var(--brand);color:#fff}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;cursor:pointer;transition:.15s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(79,70,229,.14)}
.card img{width:100%;height:170px;object-fit:cover;background:#eef0f7}
.card .body{padding:12px 14px;display:flex;flex-direction:column;gap:6px;flex:1}
.card .price{font-weight:800;font-size:17px;color:var(--brand)}
.card .title{font-weight:600;font-size:14px}
.card .meta{font-size:12px;color:var(--muted);margin-top:auto}
.badge{display:inline-block;font-size:11px;font-weight:700;background:#eef0ff;color:var(--brand);border-radius:6px;padding:2px 8px;width:fit-content}
.empty{text-align:center;color:var(--muted);padding:60px 20px;font-size:16px}
/* detail */
.back{color:var(--brand);cursor:pointer;font-weight:700;margin-bottom:14px;display:inline-block}
.detail{display:grid;grid-template-columns:1fr 1fr;gap:24px;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px}
.detail .gallery img{width:100%;border-radius:12px;margin-bottom:10px;max-height:420px;object-fit:contain;background:#f1f2f8}
.detail h1{font-size:22px;margin:8px 0}
.detail .price{font-size:26px;font-weight:800;color:var(--brand);margin:6px 0}
.detail .desc{color:#374151;margin:12px 0;white-space:pre-wrap}
.sellerbox{background:#f8f9fd;border:1px solid var(--line);border-radius:12px;padding:14px;margin:14px 0}
.sellerbox .row{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}
.soldbox{margin-top:14px;border-top:1px dashed var(--line);padding-top:12px}
.soldbox input{padding:9px 12px;border:1.5px solid var(--line);border-radius:8px;width:120px;font-size:15px;letter-spacing:2px}
/* form */
.formcard{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px;max-width:640px;margin:0 auto}
.formcard h2{margin-bottom:4px}
.formcard p.sub{color:var(--muted);font-size:13px;margin-bottom:18px}
.field{margin-bottom:14px}
.field label{display:block;font-weight:700;font-size:13px;margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;padding:11px 13px;border:1.5px solid var(--line);border-radius:10px;font-size:15px;font-family:inherit}
.field textarea{min-height:90px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand)}
.field .hint{font-size:12px;color:var(--muted);margin-top:4px}
.fieldrow{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.err{background:#fef2f2;border:1px solid #fecaca;color:#b91c1c;border-radius:10px;padding:10px 14px;margin-bottom:14px;font-size:14px;display:none}
.okbox{background:#f0fdf4;border:1px solid #bbf7d0;color:#166534;border-radius:10px;padding:12px 14px;margin-bottom:14px;font-size:14px;display:none}
.preview{display:flex;gap:10px;flex-wrap:wrap;margin-top:8px}
.preview img{width:80px;height:80px;object-fit:cover;border-radius:8px;border:1px solid var(--line)}
footer{text-align:center;color:var(--muted);font-size:12px;padding:24px}
@media(max-width:700px){.detail{grid-template-columns:1fr}.fieldrow{grid-template-columns:1fr}.grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}}
/* auth */
.authbox{display:flex;align-items:center;gap:12px}
.authbox .hlink{color:#fff;font-weight:700;font-size:14px;text-decoration:none;white-space:nowrap}
.authbox .hlink:hover{text-decoration:underline}
.authbox .uname{color:#fff;font-size:13px;font-weight:600;background:rgba(255,255,255,.18);padding:6px 12px;border-radius:999px;white-space:nowrap}
.btn-sm{padding:8px 14px;font-size:13px}
.btn-danger{background:#fee2e2;color:#b91c1c}
.btn-danger:hover{background:#fecaca}
.demobox{background:#eef0ff;border:1px solid #c7d2fe;border-radius:10px;padding:12px 14px;margin-bottom:16px;font-size:14px;line-height:1.7}
.demobox code{background:#fff;padding:2px 8px;border-radius:6px;font-weight:700}
.badge-sold{background:#fee2e2;color:#b91c1c}
.badge-live{background:#dcfce7;color:#166534}
.myrow{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}