/*
 * Light Theme
 */

html {
	--font-family-serif: Georgia, serif;
	--font-family-sans: Arial, Helvetica, sans-serif;
	--font-family-mono: Courier New, monospace;

	--color-foreground: #000;
	--color-background: #fff;
	--color-background-tinted: #eee;

	--color-link-normal:  hsl(120, 80%, 40%);
	--color-link-visited: hsl(120, 80%, 20%);
}

/*
 * Dark Theme
 */

@media (prefers-color-scheme: dark) {
	html {
		--color-foreground: #eee;
		--color-background: #000;
		--color-background-tinted: #222;

		--color-link-normal:  hsl(120, 80%, 50%);
		--color-link-visited: hsl(120, 80%, 70%);
	}

	img {
		filter: invert(100%);
	}
}

/*
 * Fonts
 */

body {
	font-family: var(--font-family-serif);
	font-size: 1rem;
	line-height: 1.5;
}

nav, header, h1, h2, h3, h4, h5, h6 {
	font-family: var(--font-family-sans);
}

/*
 * Main Layout
 */

body {
	display: grid;
	justify-content: center;
	grid-template-columns: auto 38em;
	grid-template-areas:
		'empty1 header'
		'nav    main'
		'empty2 footer';
}

body > header  { grid-area: header; }
body > nav     { grid-area: nav;    }
body > main    { grid-area: main;   }
body > footer  { grid-area: footer; }

/*
 * Header
 */

body > header {
	margin-top: 1em;
	margin-bottom: 1.5em;
}

body > header #title {
	font-style: normal;
	font-weight: bold;
	line-height: 1.2;
}

body > header p {
	margin: 0;
	padding: 0;
	font-style: italic;
}

/*
 * Navigation Bar
 */

body > nav {
	position: sticky;
	top: 2em;
	margin-top: 1em;
	margin-left: 0;
	margin-right: 1em;
	margin-bottom: auto;
	border-right: 1px solid var(--color-foreground);
	padding-right: 1em;
	padding-top: 1em;
	padding-bottom: 1em;
}

body > nav p {
	margin: 0;
	padding: 0;
	margin-bottom: .5em;
}

body > nav ul {
	display: flex;
	flex-direction: column;
	gap: .7em;
	margin: 0;
	padding: 0;
}

body > nav ul li {
	display: block;
	margin: 0;
	padding: 0;
}

body > nav ul.shortcuts {
	flex-direction: row;
	margin-top: 2em;
}

body > nav ul.shortcuts li {
	flex-basis: 32px;
}

body > nav ul.shortcuts li a {
	display: block;
}

body > nav .shortcuts img {
	display: block;
	width: 100%;
	padding: 0;
	margin: 0;
}

/*
 * Footer
 */

body > footer {
	margin-top: 2em;
	margin-bottom: 2em;
}

body > footer p {
	margin: 0;
	padding: 0;
	font-size: .8rem;
}

/*
 * Main Content
 */

main ul {
	padding-left: 1.5em;
}

main ul li {
	margin-top: .4em;
	margin-bottom: .4em;
}

main span.method, main span.dataset {
	font-family: var(--font-family-mono);
	font-size: 90%;
	letter-spacing: -0.04em;
}

main .citation-list .citation {
	font-size: 80%;
	margin-top: .5em;
	margin-bottom: .5em;
}

main .citation-list .citation p {
	display: inline;
}

main .footnote-reference {
	font-size: 80%;
	line-height: 50%;
	vertical-align: super;
}

main .footnote {
  font-size: 80%;
}

main .footnote:first-of-type {
	margin-top: 2em;
}

main .footnote p {
	display: inline;
}

main img {
	max-width: 100%;
}

main .image-gallery {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	grid-gap: 2em;
}

main ul.nav-dataset {
	margin: 0;
	padding: 0;
	display: flex;
	flex-wrap: wrap;
	justify-content: flex-start;
}

main ul.nav-dataset li {
	list-style: none;
	margin: 0;
	margin-right: 1em;
	padding: 0;
}

/* Docutils inserts extra <p> element in lists. */
main ul.nav-dataset li p {
	margin: 0;
	padding: 0;
}

/* Inline code and code blocks */
main code, main .highlight pre {
	font-family: var(--font-family-mono);
	font-size: 80%;
	letter-spacing: -.05em;
	background-color: var(--color-background-tinted);
}

main code {
	font-size: 90%;
	padding: .1em .3em;
}

main .highlight pre {
	padding: .5em;
	margin: -.5em;
	border-radius: .5em;
}

/*
 * Main Content - Tables
 */

main table {
	min-width: 100%;
	border-collapse: collapse;
	margin-top: 1.5em;
	margin-bottom: 1.5em;
	font-family: var(--font-family-sans);
	font-size: 90%;
}

main table caption {
	text-align: left;
	margin-bottom: .5em;
}

main table th, main table td {
	padding-left: .5em;
	padding-right: .5em;
	padding-top: .1em;
	padding-bottom: .1em;
}

main table td.best {
	font-weight: bold;
}

main table thead {
	border-top: 3px solid var(--color-foreground);
	border-bottom: 1px solid var(--color-foreground);
}

main table tbody {
	border-bottom: 3px solid var(--color-foreground);
}

main table thead tr:first-child th {
	padding-top: .3em;
}

main table thead tr:last-child th {
	padding-bottom: .2em;
}

main table tbody tr:first-child td {
	padding-top: .2em;
}

main table tr th:nth-child(even), main table tr td:nth-child(even) {
	background-color: var(--color-background-tinted);
}

main th.sideways {
	vertical-align: bottom;
	text-align: center;
}

main th.sideways span.sideways {
	/* Only supported by Firefox right now.
	writing-mode: sideways-lr;
	*/
	writing-mode: vertical-lr;
	transform: rotate(180deg);
	/* End workaround */
	white-space: nowrap;
	margin: 0;
	padding: 0;
}

/*
 * Heading Sizes
 */

#title  { font-size: 2rem; }
main h1 { font-size: 1.8rem; }
main h2 { font-size: 1.5rem; }
main h3 { font-size: 1.2rem; }

/*
 * Colors
 */

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

header a:link, header a:hover, header a:visited, header a:active {
	color: inherit;
	text-decoration: inherit;
}

a:link {
	color: var(--color-link-normal);
}

a:visited {
	color: var(--color-link-visited);
}

a:hover, a:active {
	color: var(--color-background);
	background-color: var(--color-link-normal);
}

/*
 * Responsive Design
 */

.responsive-only {
	display: none;
}

@media (max-width: 768px) {
	body {
		display: block;
	}

	nav {
		position: initial;
		border: initial;
		margin: initial;
		padding: initial;
		margin-top: 3em;
		font-family: var(--font-family-serif);
	}

	.responsive-only {
		display: initial;
	}
}

@media (min-width: 992px) {
	html {
		font-size: 120%;
	}
}

@media (min-width: 1200px) {
	html {
		font-size: 140%;
	}
}