:root {
    --background-image: none;
    --background-size: cover;
    --background-position: center;
    --background-repeat: no-repeat;
    --background-attachment: fixed;
    --background-opacity: 1;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: var(--background-image);
    background-size: var(--background-size);
    background-position: var(--background-position);
    background-repeat: var(--background-repeat);
    background-attachment: var(--background-attachment);
    opacity: var(--background-opacity);
    filter: blur(calc(var(--background-blur) * 1px));
    z-index: -2;
    pointer-events: none;
    image-rendering: crisp-edges;
}

#background-video {
    position: fixed;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translate(-50%, -50%);
    z-index: -2;
    object-fit: cover;
    opacity: var(--background-opacity);
    filter: blur(calc(var(--background-blur) * 1px));
}

body {
    position: relative;
    z-index: 1;
}