#loading-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9999;
    place-items: center;
}

#loading-overlay.active {
    display: grid;
}

.rotating-square {
    --square-color: aqua;
    width: 50px;
    height: 50px;
    border: 6px solid var(--square-color);
    border-radius: 4px;
    box-shadow: 0 0 8px var(--square-color), 0 0 8px var(--square-color) inset;
    position: absolute;
    translate: -50% -50%;
    z-index: 10;
    animation: 1.5s spin-square ease-in-out infinite;
}


@keyframes spin-square {
    0%{
        transform: rotateX(0) rotateY(0) rotateZ(0);

    }
    33%{
        transform: rotateX(180deg) rotateY(0) rotateZ(0);
    }
    67%{
        transform: rotateX(180deg) rotateY(180deg) rotateZ(0);
    }
    100%{
        transform: rotateX(180deg) rotateY(180deg) rotateZ(180deg);
    }
}