@import "normalize.css";
@import "fonts.css";
@import "typography.css";

:root {
    --accent-color: light-dark(oklch(0.5 100% 280), oklch(0.9 100% 280));
    --background-color: light-dark(oklch(1 0% 360), oklch(0.34 5% 294));
    --blockquote-grey: light-dark(oklch(0.33 0% 280), oklch(0.8 0% 280));
    --font-sans: OpenMoji, Atkinson Hyperlegible Next, ui-sans-serif, sans-serif;
    --font-serif: OpenMoji, Libertinus, ui-serif, serif;
    --font-mono:
        OpenMoji, Fantasque Sans Mono, Atkinson Hyperlegible Mono, Julia Mono, ui-monospace,
        monospace;
    --grey-borders: light-dark(oklch(0.86 2% 277), oklch(0.45 2% 277));
    --side-background: light-dark(oklch(0.98 0% 360), oklch(0.3 5% 294));
    --slate-text: light-dark(oklch(0.55 1% 251), oklch(0.9 1% 251));
    --text-color: light-dark(oklch(0 0% 360), oklch(1 0% 360));
    color-scheme: light dark;
}

html {
    background-color: var(--background-color);
}

body {
    color: var(--text-color);
    container: page / inline-size;
    display: flex;
    flex-direction: column;
    font-family: var(--font-sans);
    height: max-content;
    hyphens: auto;
    justify-content: space-between;
    line-height: 1.5;
    min-height: 100vh;
    padding-right: 2rem;
    text-align: justify;
    word-wrap: break-word;

    & > *:first-child {
        margin-top: 0;
    }
    & > *:last-child {
        margin-bottom: 0;
    }
}

#content {
    align-items: stretch;
    display: flex;
    flex-direction: row-reverse;
    justify-content: start;
    p {
        min-width: 30ex;
    }

    #main {
        max-width: 110rex;
        padding: 2rem 4rem 2rem 4rem;
        /* FIXME: how to infer this from par min width? */
        min-width: 30ex;

        #nav-prev-next {
            font-size: larger;
            margin-top: 3rem;
            padding-bottom: 3rem;
        }
        #nav-prev,
        #nav-next {
            display: inline-block;
        }
        #nav-prev {
            float: left;
        }
        #nav-next {
            float: right;
            text-align: right;
        }
        #nav-prev::before {
            content: "↫";
            padding-right: 0.5em;
        }
        #nav-next::after {
            content: "↬";
            padding-left: 0.5em;
        }
    }

    #sidebar {
        background-color: var(--side-background);
        display: flex;
        flex-direction: column;
        flex-shrink: 0;
        gap: 3ex;
        justify-content: space-between;
        min-height: 100vh;
        padding-bottom: 2em;
        padding-left: 1em;
        padding-right: 1em;
        width: 14em;

        #toc {
            display: flex;
            flex-direction: column-reverse;
            .toc-section {
                font-weight: bold;
            }
            ul {
                margin-bottom: 0;
            }
            li {
                overflow: hidden;
                text-overflow: ellipsis;
            }
            li ul {
                padding-top: 0.5rem;
                padding-bottom: 1rem;
            }
            li.toc-section {
                margin-top: 2rem;
            }
            li.toc-section {
                color: var(--accent-color);
            }
            li.current,
            li ul {
                border-left: 0.5ex solid var(--accent-color);
                padding-left: 1em;
                margin-left: -1em;
            }
            li.toc-chapter.current {
                font-weight: bold;
            }
            li.toc-heading {
                padding-left: 1em;
                padding-right: 0.5em;
            }
        }
        #page-footer {
            border-top: 1px solid var(--grey-borders);
            filter: grayscale(0.125);
            font-size: small;
            margin-bottom: 1rem;
            margin-left: auto;
            margin-right: auto;
            opacity: 0.75;
            text-align: left;

            #links {
                margin-top: 2em;
            }
            #licence {
                margin-top: 1em;
            }
        }
    }
}

/* For small sizes, the sidebar becomes a bottomlist */

@container page (width < 100ex) {
    #content {
        flex-direction: column;

        #sidebar {
            align-items: center;
            min-height: auto;
            width: 100%;

            #toc {
                flex-direction: column;
            }
        }
    }
}