body{
    background:#0f172a;
    color:white;
    font-family:Arial, sans-serif;
}

.card-dark{
    background:#aaa333;
    border:1px solid #374151;
    border-radius:15px;
}

.btn-primary{
    background:linear-gradient(45deg,#2563eb,#06b6d4);
    border:none;
}

.btn-primary:hover{
    opacity:0.9;
}