:root {
    --bookshelf-scrollbar-size: 7px;
    --bookshelf-scrollbar-thumb: rgba(0, 0, 0, 0.35);
    --bookshelf-scrollbar-thumb-hover: rgba(0, 0, 0, 0.5);
    --bookshelf-scrollbar-thumb-active: rgba(0, 0, 0, 0.7);
    --bookshelf-scrollbar-track: transparent;
}

html {
    scrollbar-width: thin;
    scrollbar-color: var(--bookshelf-scrollbar-thumb) var(--bookshelf-scrollbar-track);
}

body,
* {
    scrollbar-width: thin;
    scrollbar-color: var(--bookshelf-scrollbar-thumb) var(--bookshelf-scrollbar-track);
}

*::-webkit-scrollbar {
    width: var(--bookshelf-scrollbar-size);
    height: var(--bookshelf-scrollbar-size);
}

*::-webkit-scrollbar-track {
    background: var(--bookshelf-scrollbar-track);
    border-radius: 999px;
}

*::-webkit-scrollbar-thumb {
    background-color: var(--bookshelf-scrollbar-thumb);
    background-clip: padding-box;
    border: 2px solid transparent;
    border-radius: 999px;
    min-height: 36px;
    min-width: 36px;
    transition: background-color 0.2s ease, border-width 0.2s ease;
}

*::-webkit-scrollbar-thumb:hover {
    background-color: var(--bookshelf-scrollbar-thumb-hover);
    border-width: 1.5px;
}

*::-webkit-scrollbar-thumb:active {
    background-color: var(--bookshelf-scrollbar-thumb-active);
    border-width: 1.5px;
}

*::-webkit-scrollbar-corner {
    background: transparent;
}

@media (hover: hover) and (pointer: fine) {
    body.post-page pre {
        scrollbar-width: thin;
        scrollbar-color: transparent transparent;
        scrollbar-gutter: stable;
    }

    body.post-page pre::-webkit-scrollbar {
        width: var(--bookshelf-scrollbar-size);
        height: var(--bookshelf-scrollbar-size);
    }

    body.post-page pre::-webkit-scrollbar-track {
        background: transparent;
    }

    body.post-page pre::-webkit-scrollbar-thumb {
        background-color: transparent;
        border: 2px solid transparent;
    }

    body.post-page pre:hover,
    body.post-page pre:focus,
    body.post-page pre:focus-within,
    body.post-page div.highlighter-rouge:hover pre,
    body.post-page div.highlighter-rouge:focus-within pre,
    body.post-page div.highlight:hover pre,
    body.post-page div.highlight:focus-within pre,
    body.post-page figure.highlight:hover pre,
    body.post-page figure.highlight:focus-within pre {
        scrollbar-color: var(--bookshelf-scrollbar-thumb) transparent;
    }

    body.post-page pre:hover::-webkit-scrollbar,
    body.post-page pre:focus::-webkit-scrollbar,
    body.post-page pre:focus-within::-webkit-scrollbar,
    body.post-page div.highlighter-rouge:hover pre::-webkit-scrollbar,
    body.post-page div.highlighter-rouge:focus-within pre::-webkit-scrollbar,
    body.post-page div.highlight:hover pre::-webkit-scrollbar,
    body.post-page div.highlight:focus-within pre::-webkit-scrollbar,
    body.post-page figure.highlight:hover pre::-webkit-scrollbar,
    body.post-page figure.highlight:focus-within pre::-webkit-scrollbar {
        width: var(--bookshelf-scrollbar-size);
        height: var(--bookshelf-scrollbar-size);
    }

    body.post-page pre:hover::-webkit-scrollbar-thumb,
    body.post-page pre:focus::-webkit-scrollbar-thumb,
    body.post-page pre:focus-within::-webkit-scrollbar-thumb,
    body.post-page div.highlighter-rouge:hover pre::-webkit-scrollbar-thumb,
    body.post-page div.highlighter-rouge:focus-within pre::-webkit-scrollbar-thumb,
    body.post-page div.highlight:hover pre::-webkit-scrollbar-thumb,
    body.post-page div.highlight:focus-within pre::-webkit-scrollbar-thumb,
    body.post-page figure.highlight:hover pre::-webkit-scrollbar-thumb,
    body.post-page figure.highlight:focus-within pre::-webkit-scrollbar-thumb {
        background-color: var(--bookshelf-scrollbar-thumb);
        background-clip: padding-box;
        border: 2px solid transparent;
        border-radius: 999px;
    }

    body.post-page pre:hover::-webkit-scrollbar-thumb:hover,
    body.post-page pre:focus::-webkit-scrollbar-thumb:hover,
    body.post-page pre:focus-within::-webkit-scrollbar-thumb:hover,
    body.post-page div.highlighter-rouge:hover pre::-webkit-scrollbar-thumb:hover,
    body.post-page div.highlighter-rouge:focus-within pre::-webkit-scrollbar-thumb:hover,
    body.post-page div.highlight:hover pre::-webkit-scrollbar-thumb:hover,
    body.post-page div.highlight:focus-within pre::-webkit-scrollbar-thumb:hover,
    body.post-page figure.highlight:hover pre::-webkit-scrollbar-thumb:hover,
    body.post-page figure.highlight:focus-within pre::-webkit-scrollbar-thumb:hover {
        background-color: var(--bookshelf-scrollbar-thumb-hover);
        border-width: 1.5px;
    }

    body.post-page pre:hover::-webkit-scrollbar-thumb:active,
    body.post-page pre:focus::-webkit-scrollbar-thumb:active,
    body.post-page pre:focus-within::-webkit-scrollbar-thumb:active,
    body.post-page div.highlighter-rouge:hover pre::-webkit-scrollbar-thumb:active,
    body.post-page div.highlighter-rouge:focus-within pre::-webkit-scrollbar-thumb:active,
    body.post-page div.highlight:hover pre::-webkit-scrollbar-thumb:active,
    body.post-page div.highlight:focus-within pre::-webkit-scrollbar-thumb:active,
    body.post-page figure.highlight:hover pre::-webkit-scrollbar-thumb:active,
    body.post-page figure.highlight:focus-within pre::-webkit-scrollbar-thumb:active {
        background-color: var(--bookshelf-scrollbar-thumb-active);
        border-width: 1.5px;
    }
}