body {
    background: linear-gradient(-45deg, #0f172a, #1e3a8a, #2563eb, #3b82f6);
    background-size: 400% 400%;
    animation: gradientShift 18s ease infinite;
    min-height: 100vh;
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

.card {
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(10px);
}