.container{height:100vh;display:flex;justify-content:center;align-items:center;background:linear-gradient(135deg,#667eea,#764ba2)}.card{background:#fff;padding:40px;border-radius:12px;box-shadow:0 10px 25px #0003;width:420px;text-align:center}input,select,button{width:100%;margin-top:12px;padding:10px;border-radius:8px}button{background:#667eea;color:#fff;border:none;cursor:pointer;font-weight:700}.toggle{display:flex;gap:10px}.toggle button{background:#eee;color:#000}