:root{--bg:#f5f6f8;--card:#fff;--text:#16181d;--muted:#69707d;--line:#e2e5ea;--accent:#15171a;--success:#16794b;--danger:#b42318}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.5 Inter,system-ui,-apple-system,Segoe UI,sans-serif}a{color:inherit;text-decoration:none}.topbar{height:64px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 28px;position:sticky;top:0;z-index:10}.brand{font-weight:750;letter-spacing:-.02em}.nav{display:flex;gap:6px}.nav a{padding:9px 12px;border-radius:8px;color:var(--muted)}.nav a:hover,.nav a.active{background:#f0f1f3;color:var(--text)}.container{max-width:1180px;margin:0 auto;padding:32px 24px}.page-head{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:22px}h1{font-size:26px;letter-spacing:-.035em;margin:0}h2{font-size:18px;margin:0 0 16px}.muted{color:var(--muted)}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:0 1px 2px rgba(16,24,40,.03)}.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.metric strong{display:block;font-size:28px;margin-top:6px}.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse}.table th,.table td{text-align:left;padding:13px 12px;border-bottom:1px solid var(--line);white-space:nowrap}.table th{font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:9px;padding:10px 15px;background:var(--accent);color:#fff;font-weight:650;cursor:pointer}.btn.secondary{background:#fff;color:var(--text);border:1px solid var(--line)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1/-1}.field label{font-weight:650}.field input,.field select,.field textarea{width:100%;border:1px solid #cfd3da;border-radius:9px;padding:11px 12px;background:#fff;font:inherit;outline:none}.field input:focus,.field select:focus{border-color:#6b7280;box-shadow:0 0 0 3px rgba(107,114,128,.12)}.actions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px}.alert{padding:12px 14px;border-radius:9px;margin-bottom:16px;background:#eef2f6}.alert.success{color:var(--success);background:#eaf7f0}.alert.error{color:var(--danger);background:#fff0ee}.badge{display:inline-flex;border-radius:999px;padding:4px 8px;font-size:12px;background:#eef0f3}.badge.on{color:var(--success);background:#eaf7f0}.login{min-height:100vh;display:grid;place-items:center;padding:24px}.login .card{width:min(420px,100%)}.checkout{max-width:560px;margin:40px auto}.qr{display:block;width:230px;max-width:100%;margin:20px auto;border-radius:12px}.copy{display:flex;gap:8px}.copy input{min-width:0;flex:1}.empty{padding:44px;text-align:center;color:var(--muted)}@media(max-width:800px){.grid{grid-template-columns:1fr 1fr}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.topbar{padding:0 16px}.nav a{padding:8px}.container{padding:22px 14px}.page-head{align-items:flex-start;flex-direction:column}}@media(max-width:520px){.grid{grid-template-columns:1fr}.nav .optional{display:none}}