:root {
  --foreground-color: rgba(0, 0, 0, .8);
  --background-color: rgb(255, 255, 255);
  --link-color: rgb(33, 86, 165);
  --accent-color: rgb(186, 57, 37);

  --light-gray: rgba(0, 0, 0, .03);
  --dark-gray: rgba(0, 0, 0, .3);
}

html {
  height: 100%;
}

body {
  min-height: 100%;

  display: grid;
  grid-template-rows: auto 1fr auto;
  grid-template-columns: 100%;

  font-family: "Dejavu Serif", serif;
  line-height: 1.5;
  text-rendering: optimizeLegibility;

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

body > header {
  grid-row: 1 / 2;
  grid-column: 1 / 2;
}

body > main {
  grid-row: 2 / 3;
  grid-column: 1 / 2;
}

body > footer {
  grid-row: 3 / 4;
  grid-column: 1 / 2;
}

body > header,
body > footer {
  display: inherit;
  overflow-x: auto;

  font-family: "Dejavu Sans", sans-serif;
  color: var(--foreground-color);
  background-color: var(--light-gray);
}

body > header nav ul,
body > footer nav ul {
  margin: 0 auto;
  padding: 0;
  width: 100%;
  max-width: 42em;
  box-sizing: border-box;

  display: flex;
  justify-content: flex-end;
  list-style: none;
}

body > header nav ul li,
body > footer nav ul li {
  margin: 0;
  padding: 0;
}

body > header nav a,
body > footer nav a {
  padding: 1em;

  display: block;

  color: inherit;
  text-decoration: none;
  font-variant-caps: all-small-caps;
  letter-spacing: 0.1em;

  white-space: nowrap;
}

body > header nav a:hover,
body > footer nav a:hover {
  background: linear-gradient(
      rgba(0, 0, 0, 0.2),
      rgba(0, 0, 0, 0.2)
    ), var(--light-gray);
}

body > header nav li:first-of-type {
  margin-right: auto;
}

body > footer nav {
  margin: 0 auto;
}

body > main {
  margin: 0 auto;
  padding: 0 1em 0 1em;
  width: 100%;
  max-width: 42em;
  box-sizing: border-box;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: "Dejavu Sans", sans-serif;
  /* color: var(--accent-color); */
}

h1 > a,
h2 > a,
h3 > a,
h4 > a,
h5 > a,
h6 > a {
  color: inherit;
  text-decoration: inherit;
}

main > nav {
  text-align: center;
}

main > nav > a + a {
  margin-left: 2em;
}

nav a {
  text-decoration: none;
}

article > h1,
article > header {
  text-align: center;
}

article header h1 {
  margin-bottom: 0;
}

article header h1 + * {
  margin-top: 0.5em;
}

article .footnotes li:target {
  background: var(--light-gray);
  transition: background 0.5s;
}

:not(pre) > code {
  background: var(--light-gray);
  white-space: nowrap;
}

pre {
  background: var(--light-gray) !important;
  padding: 1em;
  hyphens: none;
  overflow-x: auto;
  width: 100%;
  box-sizing: border-box;
  border-left: 2px var(--accent-color) solid;
}

code {
  font-family: "DejaVu Sans Mono", monospace;
  hyphens: none;
}

pre.numberLines > code {
  counter-reset: line;
}

pre.numberLines > code > span {
  counter-increment: line;
}

pre.numberLines > code > span::before {
  display: inline-block;
  /* FIXME: Align line numbers without fixed width. */
  width: 2ch;
  padding-right: 1em;

  content: counter(line);
  user-select: none;
  text-align: right;
}

a {
  color: var(--link-color);
  hyphens: none;
}

p {
  text-align: justify;
  hyphens: auto;
}

table {
  border-collapse: collapse;
}

th, td {
  padding: 0.5em;
  /* border-bottom: 1px solid var(--foreground-color); */
}

tr:nth-child(even) {
  background-color: var(--light-gray);
}

caption {
  caption-side: bottom;
}

li + li {
  margin-top: 0.5em;
}

blockquote {
  border-left: 2px var(--dark-gray) solid;
  margin: 0 2em 0 2em;
  padding: 0 0 0 1em;
}

svg.icon {
  pointer-events: none;
  width: 100%;
  max-width: 1em;
  height: 100%;
  max-height: 1em;
  fill: var(--foreground-color);
}

.home-page {
  /* margin: auto; */
  /* max-width: 32em; */
  height: 100%;

  display: flex;
  flex-direction: column;
  justify-content: center;
  align-content: center;
}

.home-page > h1,
.home-page > p {
  text-align: center;
}

.blog-index {
  list-style: none;
  padding: 0;
}
.blog-index > li > a {
  display: block;
}
.blog-index > li > time {
  font-style: italic;
  padding-right: 1em;
}
.blog-index > li > time::after {
  content: ".";
}
.blog-index > li > p {
  display: inline;
}
.blog-index > li + li {
  padding-top: 1em;
}
@media (min-width: 42em) {
  .blog-index {
    display: grid;
    grid-template-columns: max-content minmax(0, 1fr);
    grid-gap: 0 1em;
  }
  .blog-index > li {
    display: contents;
  }
  .blog-index > li > a {
    grid-row: span 2;
    grid-column: 2 / 3;
  }
  .blog-index > li > time {
    grid-column: 1 / 2;
    text-align: right;
    font-style: initial;
  }
  .blog-index > li > time::after {
    content: "";
  }
  .blog-index > li > p {
    grid-column: 2 / 3;
    display: block;
  }
}