body{color:#e2e8f0;background:#0f172a;margin:0;font-family:Segoe UI,sans-serif}h2{margin-bottom:20px}.card{background:#1e293b;border-radius:12px;padding:20px;box-shadow:0 0 10px #0000004d}.grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px;display:grid}button{color:#fff;cursor:pointer;background:#3b82f6;border:none;border-radius:8px;padding:10px 15px}button:hover{background:#2563eb}input{border:none;border-radius:8px;width:100%;margin:5px 0;padding:10px}