#particles-js {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -1;
    background-color: var(--background-color);
    transition: background-color 0.3s ease;
}

/* Ensure content stays above particles */
body {
    position: relative;
    z-index: 1;
}