/* Animated background */
@keyframes gradientAnimation {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    font-family: Arial, sans-serif;
    background: linear-gradient(
        135deg,
        #1e1e1e 0%,
        #0a0a0a 25%,
        #1e1e1e 50%,
        #0a0a0a 75%,
        #1e1e1e 100%
    );
    background-size: 400% 400%;
    animation: gradientAnimation 15s ease infinite;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}