walt.css

/*!
 * Walt v0.2.0-dev
 * Copyright © 2023, Suzen Fylke
 * License: MIT
 *
 * Extensively uses portions of Writ v1.0.4, which is licensed as follows:
 * Copyright © 2015, Curtis McEnroe <curtis@cmcenroe.me>
 * https://cmcenroe.me/writ/LICENSE (ISC)
 */

 :root {
  --font-family: "Palatino", "Georgia", "Lucida Bright", "Book Antiqua", serif;
  --font-family-monospace: "Consolas", "Liberation Mono", "Menlo", "Courier", monospace;
  --font-size: 16px;
  --font-size-small: 0.833rem;
  --font-weight-bold: 600;
  --font-weight-heading: 400;
  --line-height: 1.5rem;
  --color-background: hsl(0deg 0% 100%);
  --color-text: hsl(0deg 0% 13%);
  --color-secondary-text: hsl(0deg 0 61%);
  --color-link: hsl(240deg 100% 46%);
  --color-link-visited: hsl(273deg 100% 37%);
  --color-code-background: rgb(0 0 0 / 5%);
  --color-code-text: hsl(0deg 0% 7%);
  --color-highlight: hsl(54deg 100% 62% / 40%);
  --color-highlight-deep: hsl(54deg 100% 62% / 90%);
  --color-border: rgb(0 0 0 / 10%);
  --color-table-border: hsl(0deg 0% 86%);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-background: hsl(232deg 23% 18%);
    --color-text: hsl(227deg 68% 88%);
    --color-secondary-text: hsl(228deg 39% 80%);
    --color-link: hsl(217deg 92% 76%);
    --color-link-visited: hsl(232deg 97% 85%);
    --color-code-background: hsl(230deg 19% 26%);
    --color-code-text: hsl(227deg 68% 88%);
    --color-highlight: hsl(355deg 71% 77% / 40%);
    --color-highlight-deep: hsl(355deg 71% 77% / 60%);
    --color-border: hsl(231deg 16% 34%);
    --color-table-border: hsl(228deg 39% 80%);
  }

  img {
    filter: brightness(.8) contrast(1.2);
  }

}

* {
  box-sizing: border-box;
}

*, *::before, *::after {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Layout */

body,
html {
  height: 100%;
  color: var(--color-text);
  background-color: var(--color-background);
  font-family: var(--font-family);
  font-size: var(--font-size);
  line-height: var(--line-height);
}

html {
  overflow-y: auto;
}

body {
  max-width: 40;
  margin-left: 1em;
  margin-right: 1em;
}

header {
  text-align: center;
  margin-top: 5em;
}

footer,
main {
  display: block;
  max-width: 78ch;
  margin: auto;
}

footer {
  margin-top: 3em;
  padding-bottom: 3em;
  position: sticky;
  top: 100vh;
}

main aside,
main figure {
  float: right;
  margin: 1.5rem 0 0 1ch;
}

main aside {
  max-width: 26ch;
  border: solid var(--color-code-background);
  border-width: 0 0 0 0.5ch;
  padding: 0 0 0 0.5ch;
}

/* Spacing */

blockquote,
dl,
h1,
h2,
h3,
h4,
h5,
h6,
ol,
p,
pre,
table,
ul {
  margin: 1.5rem 0 0;
}

/* Headings */

h1,
h2,
h3,
h4,
h5,
h6,
th,
.site-name {
  font-weight: var(--font-weight-heading);
}

h1, 
h2,
h3,
.site-name {
  line-height: 3rem;
}

h1, .site-name {
  font-size: 2.488em;
  margin-top: 2em;
}

h2 {
  font-size: 2.074em;
}

h3 {
  font-size: 1.728em;
}

h4 {
  font-size: 1.44em;
}

h5 {
  font-size: 1.2em;
}

h6 {
  font-size: 1em;
}

small {
  font-size: 0.833em;
}

header + main h1 {
  margin-top: 1.5rem;
  font-size: 2.284em;
}

/* Copy inline */

sup,
sub {
  font-size: 0.75em;
  line-height: 1em;
}

ins {
  border: solid var(--color-code-background);
  border-width: 1px;
  padding: 1px;
  text-decoration: none;
}

mark {
  color: inherit;
  background-color: var(--color-highlight-deep);
  padding: 1px;
}

/* Copy blocks */

blockquote {
  margin-right: 3ch;
  margin-left: 1.5ch;
  border: solid var(--color-code-background);
  border-width: 0 0 0 0.5ch;
  padding: 0 0 0 1ch;
}

/* Pre-formatted text */

code,
kbd,
pre,
samp {
  color: var(--color-code-text); 
  font-family: var(--font-family-monospace);
  font-size: var(--font-size-small);
}

code,
pre,
samp {
  background-color: var(--color-code-background);
  border: solid var(--color-border);
  border-width: 1px;
  border-radius: 2px;
}

code,
samp {
  padding: 0.1em 0.2em;
  white-space: nowrap;
}

pre {
  margin-top: calc(1.5rem - 1px);
  margin-bottom: -1px;
  padding: 1em;
  overflow-x: auto;
}

kbd { 
  font-weight: var(--font-weight-bold);
}

pre code {
  border: none;
  background-color: transparent;
  white-space: inherit;
}

/* Links */

a,
a code {
  color: var(--color-link);
  text-decoration: none;
}

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

p a:hover {
  text-decoration: underline;
}

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

/* Lists */

dd,
ol,
ul {
  padding: 0 0 0 3ch;
}

dd {
  margin: 0;
}

ol ol,
ol ul
ul ol,
ul ul {
  margin: 0;
}

ol > li {
  list-style-type: decimal;
}

ul > li {
  list-style-type: disc;
}

nav ul {
  padding: 0;
  list-style-type: none;
}

li ol > li {
  list-style-type: lower-roman;
}

li ul > li {
  list-style-type: circle;
}

nav ul li {
  display: inline;
  padding-left: 1ch;
  white-space: nowrap;
}

li li ol > li {
  list-style-type: lower-alpha;
}

li li ul > li {
  list-style-type: square;
}

nav ul li:first-child {
  padding-left: 0;
}

/* Tables */

table {
  width: 100%;
  border-collapse: collapse;
  overflow-x: auto;
  line-height: calc(1.5rem - 1px);
  margin-bottom: -1px;
}

thead,
tfoot {
  background-color: var(--color-code-background);
}

th,
td {
  padding: 0 0.5ch;
  border: solid var(--color-table-border);
  border-width: 1px;
}

/* Thematic break (horizontal rule) */
hr {
  border: 0;
  margin: 2em 0;
}

hr::after {
  content: '* * *';
  display: block;
  width: 100%;
  color: var(--secondary-text-color);
  text-align: center;
  font-family: var(--font-family-monospace);
}

/* Images */

img { max-width: 100%; }

/* Misc */

/* See https://www.a11yproject.com/posts/how-to-hide-content/ */
.visually-hidden {
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  height: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
  width: 1px;
}