body{
    margin:0;
    font-family: Arial, sans-serif;
    background: linear-gradient(120deg,#0f2027,#203a43,#2c5364);
    color:white;
    display:flex;
    flex-direction:column;
    align-items:center;
}

.lang-switch{
    margin-top:20px;
}

.lang-switch button{
    padding:10px 15px;
    border:none;
    border-radius:8px;
    background:#00c6ff;
    color:white;
    cursor:pointer;
    margin:5px;
    font-weight:bold;
}

.card{
    margin-top:30px;
    background:rgba(255,255,255,0.1);
    padding:30px;
    border-radius:20px;
    width:90%;
    max-width:400px;
    text-align:center;
    box-shadow:0 0 20px rgba(0,0,0,0.4);
}

h1{
    font-size:32px;
}

.btn{
    display:block;
    margin-top:20px;
    padding:12px;
    background:#00ffcc;
    color:black;
    text-decoration:none;
    border-radius:10px;
    font-weight:bold;
}