:root{--bg: #0f172a;--panel: #1e293b;--panel-2: #273449;--text: #e2e8f0;--muted: #94a3b8;--accent: #38bdf8;--accent-hover: #0ea5e9;--success: #22c55e;--error: #ef4444;--border: #334155}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;-webkit-font-smoothing:antialiased;min-height:100vh}#root{min-height:100vh;display:flex;justify-content:center;padding:24px 16px 64px}.app{width:100%;max-width:720px}.app h1{margin:0 0 4px;font-size:28px;letter-spacing:-.01em}.app .lede{color:var(--muted);margin:0 0 28px;font-size:15px}.panel{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:20px;margin-bottom:20px}.panel h2{margin:0 0 14px;font-size:16px;font-weight:600;color:var(--text)}.products{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}.product{background:var(--panel-2);border:1px solid var(--border);border-radius:10px;padding:14px;cursor:pointer;transition:all .15s ease}.product:hover{border-color:var(--accent)}.product.selected{border-color:var(--accent);background:#38bdf814;box-shadow:0 0 0 1px var(--accent)}.product .name{font-weight:600;margin-bottom:4px}.product .price{color:var(--accent);font-weight:600;font-size:15px}.product .desc{color:var(--muted);font-size:12px;margin-top:6px;line-height:1.4}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}.row .field{margin-bottom:0}label{font-size:13px;color:var(--muted);font-weight:500}input,select,textarea{background:var(--panel-2);border:1px solid var(--border);color:var(--text);padding:10px 12px;border-radius:8px;font-size:14px;font-family:inherit;outline:none;transition:border-color .15s}input:focus,select:focus,textarea:focus{border-color:var(--accent)}textarea{resize:vertical;min-height:60px}.qty-row{display:flex;gap:12px;align-items:center}.qty-row input{width:80px}.total{font-size:18px;font-weight:600;padding:14px 0;border-top:1px solid var(--border);margin-top:10px;display:flex;justify-content:space-between}.total .amount{color:var(--accent)}button.primary{width:100%;background:var(--accent);color:#0f172a;border:none;padding:14px;border-radius:10px;font-size:15px;font-weight:600;cursor:pointer;transition:background .15s}button.primary:hover:not(:disabled){background:var(--accent-hover)}button.primary:disabled{opacity:.5;cursor:not-allowed}.alert{padding:12px 14px;border-radius:8px;margin-bottom:16px;font-size:14px;line-height:1.5}.alert.success{background:#22c55e1f;border:1px solid rgba(34,197,94,.35);color:#86efac}.alert.error{background:#ef44441f;border:1px solid rgba(239,68,68,.35);color:#fca5a5}.alert a{color:inherit;text-decoration:underline}@media (max-width: 480px){.row{grid-template-columns:1fr}}