/* The accent of the documentation site: WebAssembly's purple (#654FF0 on
   light backgrounds, #8B74FF on dark ones), laid over mdBook's built-in
   themes by overriding their CSS variables. Body text and backgrounds stay
   the themes' own, so the pages read as they did; only links, the sidebar's
   active and hovered entries, inline code, blockquote borders, the search
   highlight, the "on this page" border and the theme menu's selection take
   the colour. Colours only: the WebAssembly logo is a trademark and is not
   embedded. Loaded through book.toml's additional-css. */

:root {
    --wasm-purple: #654FF0;
    --wasm-purple-light: #8B74FF;
}

/* Light themes: the default theme, and the no-JavaScript fallback. */
.light,
html:not(.js) {
    --links: var(--wasm-purple);
    --sidebar-active: var(--wasm-purple);
    --sidebar-header-border-color: var(--wasm-purple);
    --inline-code-color: #4a38c2;
    --quote-bg: #f6f4fe;
    --quote-border: #ddd7fb;
    --theme-hover: #ede9fe;
    --search-mark-bg: #d6cdfb;
    --searchresults-li-bg: #ede9fe;
    --searchbar-shadow-color: #b9adf8;
    --footnote-highlight: #c9bfff;
    /* Same as --sidebar-active, for the copy button's hover. */
    --copy-button-filter-hover: invert(31%) sepia(72%) saturate(3580%) hue-rotate(238deg) brightness(97%) contrast(96%);
}

/* The rust theme is light too; it keeps its own warm palette but takes the
   accent where the other light theme does. */
.rust {
    --links: var(--wasm-purple);
    --sidebar-active: var(--wasm-purple-light);
    --sidebar-header-border-color: var(--wasm-purple-light);
}

/* Dark themes: navy is the preferred dark theme; coal and ayu, and the
   no-JavaScript fallback under a dark colour scheme, take the same accent so
   switching themes keeps the site's colour. */
.navy,
.coal,
.ayu {
    --links: var(--wasm-purple-light);
    --sidebar-active: var(--wasm-purple-light);
    --sidebar-header-border-color: var(--wasm-purple-light);
    --inline-code-color: #b7a9ff;
    --quote-bg: #232040;
    --quote-border: #3d3575;
    --theme-hover: #2a2748;
    --search-mark-bg: #4a3aa8;
    --searchresults-li-bg: #2a2748;
    --searchbar-shadow-color: var(--wasm-purple-light);
    --footnote-highlight: #4a3aa8;
    /* Same as --sidebar-active, for the copy button's hover. */
    --copy-button-filter-hover: invert(52%) sepia(44%) saturate(4262%) hue-rotate(226deg) brightness(101%) contrast(101%);
}

@media (prefers-color-scheme: dark) {
    html:not(.js) {
        --links: var(--wasm-purple-light);
        --sidebar-active: var(--wasm-purple-light);
        --sidebar-header-border-color: var(--wasm-purple-light);
        --inline-code-color: #b7a9ff;
        --quote-bg: #232040;
        --quote-border: #3d3575;
        --theme-hover: #2a2748;
        --search-mark-bg: #4a3aa8;
        --searchresults-li-bg: #2a2748;
        --searchbar-shadow-color: var(--wasm-purple-light);
        --footnote-highlight: #4a3aa8;
    }
}

/* The theme menu marks the selected theme in the accent. */
.theme-popup .theme-selected {
    color: var(--links);
}