/* variables */
:root {
  --font-size: 12pt;
	--line-height: 1.25;
  --font-family: monospace;

  /* font-derived column width */
  --col-w: clamp(33.333vw, 80ch, 80vw);

  /* colors */
  --fg-c: #000000;
  --bg-c: #e2e2e2;
	--link-c: #856cff;
	--visited-c: #ff1170;
	--active-c: #fa3500;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg-c: #e2e2e2;
    --bg-c: #000000;
  }
}

/* reset */

* {
	box-sizing: border-box;
  margin: unset;
  hyphens: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--link-c) rgba(0,0,0,0);
}

::selection {
  color: var(--bg-c);
  background-color: var(--fg-c);
}

/* root */

:root {
	color: var(--fg-c);
	background-color: var(--bg-c);
  font: var(--font-size)/var(--line-height) var(--font-family);
}

body {
  margin: 0;
}

/* content sectioning */

address {
  font-style: unset;
}

h1, h2, h3, h4, h5, h6 {
  hyphens: none;
	font-size: unset;
}

:is(h1, h2, h3, h4, h5, h6) * {
  hyphens: none;
}

h1, h2 {
  font-weight: bold;
}

h3, h4, h5, h6 {
  font-weight: unset;
  font-style: italic;
}

/* text content */

:is(h1, h2, h3, h4, h5, h6) {
  margin-block-start: 2rlh;
  margin-block-end: 1rlh;
}

:is(blockquote, div, dl, figure, hr, menu, ol, p, pre, table, ul) +
:is(blockquote, div, dl, figure, hr, menu, ol, p, pre, table, ul) {
  margin-block-start: 1rlh;
}

blockquote {
	margin-inline: 2ch;
}

dt {
  font-style: italic;
}

dd {
  padding-inline-start: 2ch;
}

figure {
  margin-inline: 2ch;
}

ol, ul, menu {
  padding-inline-start: 5ch;
}

:is(ol, ul, menu) :is(ol, ul, menu) {
  margin-block: unset;
}

li :is(blockquote, div, dl, figure, hr, menu, ol, p, pre, ul) {
  margin-block: unset;
}

ul>li::marker {
	content: "- ";
}

hr {
	color: unset;
	border: unset;
  text-align: center;
}

hr::after {
  content: "---";
}

pre {
  margin-inline: 2ch;
  color: var(--link-c);
  overflow-y: scroll;
}


/* inline text semantics */

a {
  cursor: pointer;
  text-decoration: underline;
}

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

a:link:active {
  color: var(--active-c);
}

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

a:visited:active {
  color: var(--active-c);
}

code {
  color: var(--link-c);
}

sup {
  line-height: 0;
}


/* image and multimedia */

img {
  max-width: 100%;
}


/* table content */

table {
  table-layout: fixed;
  border-collapse: collapse;
}

th, td {
  padding-inline: 1ch;
}

th {
  border-bottom: thin solid;
  vertical-align: bottom;
  hyphens: none;
}

td {
  vertical-align: top;
}

/* layout */

main {
  height: 100vh;
	display: grid;
  grid-auto-flow: column;
  grid-auto-columns: var(--col-w);
	overflow-x: scroll;
}

main>* {
  padding: 1rlh 1ch;
	overflow-y: scroll;
}

/* article.post */

article.post>header,
article.post>nav {
  margin-block: 1rlh;
}

/* div.fauxnote */

div.fauxnote {
  opacity: 0.667;
}


/* div.horizontal */

div.horizontal {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 100%;
  gap: 1ch;
  overflow-x: scroll;
}

div.horizontal>* {
  margin-block: unset;
}

/* .display.math */

.display.math {
  display: block;
  text-align: center;
}