@charset "UTF-8";

* {
    max-width: 100%;
    color: var(--accent);
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--main-bg);
    margin: 0 auto;
    padding: 0;
    width: 85%;
}

header {
    padding: 10px 20px;
    background: linear-gradient(to bottom, var(--heading-bg), var(--content-bg1));
    border-top: solid 5px var(--accent);
    border-bottom: solid 2px #888;
}

header h3 {
    font-size: 32px;
    margin: 0;
}

main {
    display: flex;
    align-items: flex-start;
}

article {
    flex-grow: 1;
    padding: 15px;
    box-sizing: border-box;
    background: var(--content-bg1);
}

aside {
    font-size: 13px;
    margin-left: 10px;
    width: 200px;
    flex-shrink: 0;
    box-sizing: border-box;
    background: var(--content-bg1);
}

aside h3 {
    padding: 10px;
    margin: 0;
    font-weight: bold;
    background: var(--content-bg2);
    border-bottom: solid 2px var(--accent);
}

aside ul {
    padding: 0 15px;
}

footer {
    color: var(--heading-bg);
    padding-top: 300px;
    clear: both;
    text-align: center;
}

nav#breadcrumb {
    font-size: 13px;
    white-space: nowrap;
    overflow-x: auto;
    -ms-overflow-style: none;
    scrollbar-width: none;
}

nav#breadcrumb::-webkit-scrollbar {
    display: none;
}

nav#breadcrumb li {
    display: inline-block;
}

nav#breadcrumb li::after {
    margin: 0 5px;
    content: ">";
    color: #888;
}

nav#toc {
    padding: 15px 30px;
    margin: 0 15px 30px 15px;
    background: var(--content-bg2);
    line-height: 1.7;
    font-size: 13px;
}

nav#toc ul {
    margin: 0 10px;
    list-style: disc;
}


ul {
    list-style: none;
}

img {
    height: auto;
    border: 0;
}

hr {
    border-style: solid;
    border-color: var(--accent);
    height: 1px;
}

a {
    color: #09f;
    text-decoration-line: none;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

a:hover {
    text-decoration-line: underline;
}

h1 a,
h2 a,
h3 a,
h4 a,
h5 a,
h6 a {
    color: var(--accent);
}

h1 {
    margin: 0;
    padding: 0;
}

h2 {
    margin: 10px 0;
    padding: 5px 10px;
    background: var(--heading-bg);
    border-left: solid 2px var(--accent);
}

blockquote {
    border: 2px solid #888;
    padding: 10px;
    margin: 20px;
}

input {
    user-select: none;
}


:root {
    --accent: #000;
    --main-bg: #fff;
    --content-bg1: #eee;
    --heading-bg: #bbb;
    --content-bg2: #ddd;
}

@media screen and (max-width: 768px) {
    main {
        flex-direction: column;
    }

    article,
    aside {
        width: 100%;
        padding: 1em 0;
        margin: 0;
    }

    aside ul {
        padding: 0;
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        --accent: #ddd;
        --main-bg: #000;
        --content-bg1: #111;
        --heading-bg: #444;
        --content-bg2: #222;
    }

    img {
        filter: saturate(90%) brightness(80%);
    }
}