/*** Variables and media queries */

:root {
    --serif: Georgia, "Times New Roman", Times, serif;
    --sans-serif: Verdana, "Lucida Grande", "Lucida Sans Unicode", "Lucida Sans", sans-serif;
    --monospace: monospace;
    --bg: #fdfdfd;
    --text-color: #111;

    --select-color: #c00;
    --hover-color: rgba(160, 0, 0, 0.8);
    --link-color: #1a0dab;

    --width: 80rem;
    --toc-width: 30rem;
    --text-width: calc(var(--width) - var(--toc-width));
    --divider: calc(100% - var(--toc-width));
    --spacing: 2em;
}

@media (max-width: 845px) {
    .section-number-2, .section-number-3, .section-number-4, .section-number-5, .section-number-6 {
        display: none;
    }
    body #table-of-contents {
        float: inherit;
        position: inherit;
        margin: 0 0 var(--spacing);
        --padding: 1.5em;
        width: calc(100% - calc(var(--padding) * 2));
        padding: 1.25em var(--padding);
        background: #f0f0f0;
    }
    body #content > div:not(#table-of-contents) {
        margin: 0;
        max-width: 100%;
        min-width: inherit;
        text-align: left;
    }
    body pre.src:before {
        display: none !important;
    }
}

/*** Typography */

html {
    font-size: 62.5%;
}

body {
    font-size: 1.5em;
    font-family: var(--serif);
    line-height: 1.6;
    background: var(--bg);
    margin: 0 var(--spacing);
    color: var(--text-color);
    -webkit-text-size-adjust: none;
}

/**** Headings */

h1, h2, h3, h4, h5, h6 {
    text-align: left;
    -moz-hyphens: none;
    -webkit-hyphens: none;
    -ms-hyphens: none;
    hyphens: none;
}

h2 { margin-top: 1.5em; }
h5, h6 { font-family: var(--sans-serif); }
h3, h4 { font-family: var(--serif); }
h3, h4, h5, h6 { font-weight: normal; }
h4 {
    font-style: italic;
    font-size: 1em;
    margin-bottom: 0;
}
h5, h6 { font-size: 0.8em; }
h6 { font-style: italic; }

/**** Text elements */

a {
    color: var(--link-color);
    text-decoration: none;
}
a:hover {
    color: white;
    background: var(--hover-color);
}

li {
    text-align: left;
}

blockquote {
    font-style: italic;
    margin-left: 3.5em;
    margin-right: 3.5em;
}

blockquote i, blockquote em { font-style: normal; }
blockquote i i, blockquote em em { font-style: italic; }

/**** Layout elements */

hr {
    border: 0;
    height: 0;
    border-top: 1px solid var(--gray);
    border-bottom: 1px solid transparent;
    margin-top: 1em;
}

/**** Tables and figures */

img {
    max-width: 100%;
}

.figure {
    padding: 0; /* is this a good idea? */
}

table th {
    min-width: 11rem;
}
table code {
    -moz-hyphens: none;
    -webkit-hyphens: none;
    -ms-hyphens: none;
    hyphens: none;
}

/**** Code */

code {
    font-style: italic;
    padding: 0 2px;
    font-size: 1.3rem;
}

pre {
    font-family: var(--monospace);
    overflow-x: auto !important;
    box-shadow: none;
    margin-left: 0;
    margin-right: 0;
    font-size: 1.2rem;
    word-break: keep-all;
}

pre, code {
    -moz-hyphens: none;
    -webkit-hyphens: none;
    -ms-hyphens: none;
    hyphens: none;
}
pre.src:before { /* org-mode programming language indicators */
    top: 0;
    right: 0;
    border-color: #ccc;
    border-width: 0 0 1px 1px;
}
pre.src-bat:before { content: 'batch'; }

/*** Footnotes */

.footref:hover { text-decoration: none; }
.footref:before { content: "["; }
.footref:after { content: "]"; }

#footnotes {
    border-top: 1px solid var(--gray);
}

#footnotes > h2 {
    text-align: right !important;
    font-size: inherit;
    font-variant: small-caps;
    text-transform: lowercase;
}

.footpara {
    display: block;
}

.footnum {
    --font-size: 3.4rem;
    font-size: var(--font-size);
    padding: 1px calc(var(--font-size) / 3);
    float: left;
    clear: left;
    margin-right: 0.3em;
    background: var(--gray);
    color: white;
    font-weight: bold;
    font-family: var(--sans-serif);
}
.footnum:hover {
    text-decoration: none;
    background: black;
    color: white;
}

/*** Main content layout */

#content {
    max-width: var(--width);
    margin: 0 auto;
}

h1.title {
    font-size: 2.8rem;
    background: var(--bg);
    padding: 1em;
    margin: 0 0 1em;
    border-bottom: 1px solid var(--gray);
}

h1.title:after {
    font: 1.6rem/1.0 var(--serif);
    font-weight: normal;
    font-variant: small-caps;
    color: #555;
    display: block;
    margin-top: 0.5em;
    content: "John Ankarström";
}

/**** Table of Contents */

#table-of-contents {
    font-family: var(--sans-serif);
    float: right;
    position: -webkit-sticky;
    position: sticky;
    top: 1em;
    width: calc(100% - var(--divider) - var(--spacing));
}

#table-of-contents h2 {
    font-size: 1.44rem;
}

#text-table-of-contents {
    font-size: 1.3rem;
    line-height: 1.5;
}
#text-table-of-contents ul {
    list-style-type: none;
    padding-left: 0;
    margin-bottom: 0;
}
#text-table-of-contents a {
    display: block;
    padding: 0.2em 1em;
    text-decoration: none;
}
#text-table-of-contents a:hover {
    color: var(--link-color);
    background: transparent;
}
#text-table-of-contents a.active {
    background: rgb(255, 248, 212);
    color: var(--select-color);
}
#text-table-of-contents .heading-sub {
    font-style: italic;
}

#text-table-of-contents > ul ul a { padding-left: 30px; } /* second */
#text-table-of-contents > ul ul ul a { padding-left: 50px; } /* third */
#text-table-of-contents > ul ul ul ul a { padding-left: 70px; } /* fourth */
#text-table-of-contents > ul ul ul ul ul a { padding-left: 90px; } /* fifth */
#text-table-of-contents > ul ul ul ul ul ul a { padding-left: 120px; } /* sixth */

/* Remove margin from ToC heading and first heading in text */
#table-of-contents h2, #table-of-contents + .outline-2 > h2 {
    margin-top: 0;
}

/**** Special containers */

div.abstract:before, div.introduction:before {
    font-style: italic;
    text-align: center;
    display: block;
}
div.abstract:before { content: "Abstract"; }
div.introduction:before { content: "Introduction"; }

div.note {
    background: rgb(255, 248, 212);
    border: 1px dotted #ccc;
    padding: 1.25em 1.5em;
    margin: 1em 0;
    font-style: italic;
}
div.note p { margin: 0.5em 0; }
div.note :first-child { margin-top: 0; }
div.note :last-child { margin-bottom: 0; }

/**** Main text (typography) */

#content > div:not(#table-of-contents) {
    max-width: var(--text-width);
    text-align: justify;
    word-break: break-word;
    -moz-hyphens: auto;
    -webkit-hyphens: auto;
    -ms-hyphens: auto;
    hyphens: auto;
    transition: max-width 0.2s ease-in-out;
}

/**** Section headings */

.section-number-2, .section-number-3, .section-number-4, .section-number-5, .section-number-6 {
    float: right;
    background: #800;
    color: white;
    padding: 0 0.4em;
    margin: 0 0 0.5em 1em;
}

#content > div:not(#table-of-contents) .heading-sub {
    font-weight: normal;
}
#content > div:not(#table-of-contents) .heading-sub:before {
    content: "\a";
    white-space: pre-line;
}

/*** Postamble */
#postamble {
    text-align: right;
    margin: 1em;
    font-family: var(--sans-serif);
    font-size: 0.8em;
}