:root{--bg: #f8fafc;--surface: #ffffff;--line: #e2e8f0;--text: #0f172a;--muted: #64748b;--primary: #2563eb;--primary-hover: #1d4ed8;--green: #16a34a;--amber: #d97706;--red: #dc2626}*{box-sizing:border-box;font-family:Segoe UI,system-ui,-apple-system,Roboto,sans-serif}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);min-height:100vh}a{color:var(--primary);text-decoration:none}.card{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:22px;box-shadow:0 2px 10px #0f172a0a;margin-bottom:20px}.form-group{margin-bottom:14px}.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-bottom:14px}label{display:block;font-size:12.5px;font-weight:600;color:#334155;margin-bottom:5px}input[type=text],input[type=email],input[type=password],input[type=number],select,textarea{width:100%;padding:9px 12px;border:1px solid #cbd5e1;border-radius:8px;background:#fff;color:var(--text);font-size:13.5px;outline:none;transition:border-color .15s,box-shadow .15s}input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px #2563eb1f}button,.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 16px;border-radius:8px;border:none;background:var(--primary);color:#fff;font-size:13.5px;font-weight:600;cursor:pointer;transition:all .15s}button:hover:not(:disabled),.btn:hover:not(:disabled){background:var(--primary-hover)}button:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:#f1f5f9;color:#334155;border:1px solid #cbd5e1}.btn-secondary:hover:not(:disabled){background:#e2e8f0;color:#0f172a}.btn-success{background:var(--green)}.btn-success:hover:not(:disabled){background:#15803d}.btn-amber{background:#fef3c7;color:#92400e;border:1px solid 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