#overlay {
    z-index: 1000;
    position: fixed;

    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;

    background-color: rgba(0, 0, 0, 0.3);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

#overlay.active {
    opacity: 1;
    pointer-events: auto;
}