@font-face {
    font-family: "DejaVu Sans Mono";
    src: url("../files/fonts/dejavu/ttf/DejaVuSansMono.ttf");
}
:root {
    --fg: #90ff90;
	--shadow: 0 0 3px #80ffc066, 0 0 5px #0f63;
    --link: #3e3;
    --visited: #b9ffb0;

    --bg: #1d2021;
	--bg2: black;
	--selection: #466639;

    --font-body: "DejaVu Sans", "Bitstream Vera Sans", "Verdana", sans-serif;
    --font-mono: "DejaVu Sans Mono", "Bitstream Vera Sans Mono", "Menlo", monospace;
    --font-accent: var(--font-mono);
}
.green {
    --fg: #86ff86; /* hue 120, contrast 13:1 */
	--shadow: 0 0 3px #80ffc066, 0 0 5px #0f63;
    --link: #42f042; /* hue 120, contrast 10.75:1 */
    --visited: #b7ffaf; /* hue 114, contrast 14:1 */

    --bg: #1d2021;
	--selection: #466639;
}
.purple {
	--fg: #f099ff; /* hue 291, contrast 8:1 */
	--shadow: 0 0 3px #ff80f166, 0 0 5px #f0f3;
	--link: #ff96e2; /* hue 317, contrast 8:1 */
	--visited: #ff82d2; /* hue 322, contrast 7:1 */

	--bg: #291f33;
	--selection: #663963;
}
.cyan {
	--fg: #90ffff; /* hue 180, contrast 14:1 */
	--shadow: 0 0 3px #0ff6, 0 0 5px #0ff3;
	--link: #00f5f5; /* hue 180, contrast 12:1 */
	--visited: #83baf1; /* hue 210, contrast 8:1 */

    --bg: #1d2021;
	--selection: #466639;
}

/* UTILITY CLASSES */
.clearfix::after, section::after { clear:both; display:block; content: ""; }
.inline { display:inline }
/* MAIN STYLES*/
html {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
body {
    background-color: var(--bg);
    background: linear-gradient(var(--bg) 0%, var(--bg2) 33%, var(--bg) 66%);
    background-size: 100% 3px;
    color: var(--fg);
    text-shadow: var(--shadow);
    font: 100%/1.6 var(--font-body);
    margin: auto;
    max-width: 75ch;
    word-spacing: .05em;
}
::selection {
	background: var(--selection);
	color: white;
	text-shadow: none;
}
a {
    color: var(--link);
}
a:visited {
    color: var(--visited);
}
a:hover,
a:focus {
    text-decoration: none;
}
code,
pre {
    font: 100%/1.25 var(--font-mono);
}
footer {
    font: 75%/1.25 var(--font-accent);
}
h1 {
    font: bold 200%/1 var(--font-accent);
    margin: 0.5em 0 0 0;
    border-bottom: 0.25em solid;
}
h1::after {
    content: "█";
    display: inline-block;
    animation: blink 2.4s steps(2) infinite;
}
@keyframes blink {
    0% {
        opacity: 0;
    }
}
@media(prefers-reduced-motion: reduce) {
	h1::after {
		animation: none !important;
		opacity: 50%;
	}
}
h2 {
    font: bold 141%/1 var(--font-accent);
    margin: 0.4em 0;
}
h3 {
	font: bold 117%/1 var(--font-accent);
}
/* NAVIGATION */
header > nav > ul {
    font: 100%/1.5 var(--font-accent);
    list-style-type: none;
    margin: 0 0 0.4em 0;
    padding: 0;
}
header > nav > ul > li {
    display: inline;
}
header > nav > ul > li > a {
    padding: 0.4em;
}
header > nav a.active {
    background: var(--fg);
    color: var(--bg);
}
/* SECTION */
section {
    border-bottom: 1px solid;
}
/* IMAGES */
figure {
	border: 1px solid;
	margin: auto;
	padding: 0.4em;
	text-align: center;
	width: min-content;
}
figure.fullwidth {
	width: initial;
}
figure.fullwidth > img {
	max-width: 100%;
}
/* DETAILS */
details {
	border: 1px solid;
	padding: 0.4em;
}
/* TABLES */
table {
	margin: 0.4em;
}
tr:nth-of-type(odd) {
	background: var(--bg);
}
tr:nth-of-type(even) {
	background: var(--bg2);
}
tr td:first-child {
    white-space: nowrap;
}
td {
	padding: 0 0.4em;
}
th {
	border: 1px solid;
	padding: 0 0.4em;
}
table.center-cells td,
table.center-cells th {
	text-align: center;
}