:root{--bg:#f4f6fb;--surface:#fff;--ink:#111827;--muted:#6b7280;--border:#e5e7eb;--accent:#2563eb;--danger:#dc2626;--ok:#059669;--radius:8px;--shadow:0 10px 30px rgba(15,23,42,.08)}
*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:var(--ink);background:linear-gradient(180deg,#eef2ff 0%,var(--bg) 240px)}
a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{border:0;border-radius:12px;background:var(--accent);color:#fff;padding:10px 14px;cursor:pointer}button.secondary{background:#e5e7eb;color:var(--ink)}button:disabled{opacity:.55;cursor:not-allowed}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.muted{color:var(--muted)}
.shell{width:min(1120px,calc(100% - 24px));margin:0 auto;padding:20px 0 48px}.topbar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:20px}
.brand{font-weight:700}.nav{display:flex;gap:12px}.nav a{color:var(--muted)}.nav a.active,.nav a:hover{color:var(--ink)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}.product-card{padding:16px;display:grid;gap:10px}.price{font-size:20px;font-weight:700}
.product-link{display:grid;gap:10px}.catalog-toolbar{display:flex;gap:10px;flex-wrap:wrap;margin:0 0 16px}.catalog-toolbar input,.catalog-toolbar select{min-height:42px;border:1px solid var(--border);border-radius:10px;padding:9px 12px;background:var(--surface)}.catalog-toolbar input{flex:1;min-width:220px}.notice{margin-top:10px;padding:10px 12px;border-left:3px solid var(--accent);background:#eff6ff;color:#1e3a8a}
.badge{display:inline-flex;padding:2px 8px;border-radius:999px;background:#ecfeff;color:#0f766e;font-size:12px}
.form{display:grid;gap:12px}.form label{display:grid;gap:6px;font-size:14px}.form input,.form select,.form textarea{border:1px solid var(--border);border-radius:12px;padding:10px 12px;background:#fff}
.keys{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:#0b1220;color:#e2e8f0;border-radius:8px;padding:12px;white-space:pre-wrap}
.payment-panel{border:1px solid var(--border);border-radius:8px}.payment-qr{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.payment-qr img{display:block;width:220px;height:220px;image-rendering:auto;background:#fff;border:8px solid #fff;border-radius:4px}.payment-actions,.button-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.button-link{display:inline-flex;align-items:center;justify-content:center;border-radius:8px;background:var(--accent);color:#fff;padding:10px 14px}.settings-block{padding:16px;margin-bottom:16px}
.admin-layout{display:grid;grid-template-columns:224px 1fr;min-height:100vh;background:#0f172a}.admin-side{color:#cbd5e1;padding:20px 14px;border-right:1px solid rgba(148,163,184,.2)}.admin-side a{display:block;padding:10px 12px;border-radius:10px;color:#cbd5e1;margin-bottom:4px}.admin-side a.active,.admin-side a:hover{background:rgba(148,163,184,.12);color:#fff}.admin-main{background:#f8fafc;color:var(--ink);padding:24px}
.kpi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin-bottom:20px}.kpi{padding:16px}
.table{width:100%;border-collapse:collapse;background:#fff;border-radius:16px;overflow:hidden}.table th,.table td{text-align:left;padding:12px;border-bottom:1px solid var(--border);font-size:14px}
.login-wrap{min-height:100vh;display:grid;place-items:center;background:#0f172a}.login-card{width:min(400px,calc(100% - 24px));padding:24px}
@media (max-width:768px){.admin-layout{grid-template-columns:1fr}.admin-side{display:flex;gap:8px;overflow:auto}.payment-qr{align-items:flex-start}.payment-qr img{width:min(220px,70vw);height:auto;aspect-ratio:1}}