body {
    font-family: 'Poppins', sans-serif;
    background: radial-gradient(circle at top left, #1e293b, #0f172a);
    min-height: 100vh;
}
.ball {
    box-shadow: inset -5px -5px 15px rgba(0,0,0,0.3), 5px 5px 15px rgba(0,0,0,0.2);
}
.joker-ball {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
}
.number-ball {
    background: linear-gradient(135deg, #fbbf24, #d97706);
}
.card-glass {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}