@import url('https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,100..900;1,14..32,100..900&display=swap');

:root {
  --common-element-size: 16px;
  --common-element-size-2x: calc(var(--common-element-size) * 2);

  --content-width: calc(var(--common-element-size) * 45);
  --content-min-width: calc(var(--common-element-size) * 15);
  --sidebar-width: calc(var(--common-element-size) * 10);
  --sidebar-left-margin: calc(50vw - (var(--content-width) / 2) - var(--sidebar-width) - (var(--common-element-size) * 2));

  --text-font-family: 'Inter', 'DIN', 'Helvetica', 'Arial';
  --text-font-size: var(--common-element-size);
  --text-blog-name-size: calc(var(--text-font-size) * 1.5);
  --text-title-size: calc(var(--text-font-size) * 3);
  --text-spacing: calc(var(--common-element-size) / 20);
  --text-line-height: calc(1em + var(--common-element-size));
  --text-line-height-scaleable: 1.8em;

  --text-color: black;
  --text-color-opposite: white;
  --common-color-shade: rgba(128, 128, 128, 0.075);
  --common-color-line: rgba(128, 128, 128, 0.3);

  --infobox-background-color: rgba(114, 188, 255, 0.25);
  --infobox-border-color: rgba(114, 188, 255, 0.6);
}

@media (min-width: 1400px) {
  :root {
    --text-title-size: calc(var(--text-font-size) * 4);
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --text-color: white;
    --text-color-opposite: #171717;
  }

  img.inverting {
    filter: invert(1);
  }
}

@media print {
  :root {
    --common-element-size: 12px;
  }
}

/* Typography & Core Layout */
body {
  background-color: var(--text-color-opposite);
  color: var(--text-color);
  font-family: var(--text-font-family), sans-serif;
  font-size: var(--text-font-size);
  line-height: var(--text-line-height);
  word-spacing: var(--text-spacing);
  min-width: var(--content-min-width);
  max-width: var(--content-width);
  margin: var(--common-element-size-2x) auto;
  padding: 0 var(--common-element-size-2x);
}

/* Common Elements */
p {
  margin-top: var(--common-element-size);
}

hr {
  margin: var(--common-element-size) 0;
  border: 0;
  border-top: 1px solid var(--common-color-line);
}

/* Links */
a {
  display: inline;
  padding: 0.1em 0.25em;
  text-decoration: none;
  border-bottom: 2px solid var(--text-color);

  color: var(--text-color);
  background-color: var(--text-color-opposite);
}

a:hover {
  color: var(--text-color-opposite);
  background-color: var(--text-color);
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
  margin-top: var(--common-element-size-2x);
  line-height: var(--text-line-height);
  font-weight: 900;
  word-break: break-word;
  overflow-wrap: break-word;
  white-space: normal;
  hyphens: auto;
}

main h1:first-of-type {
  font-size: var(--text-title-size);
  font-style: italic;
  text-transform: uppercase;
}

.title h1 {
  font-size: var(--text-blog-name-size);
  margin: 0;
}

/* Embeddables */
img, video, iframe, table, .highlight, .framed {
  max-width: 100%;
  margin-top: var(--common-element-size);
}

.highlight {
  font-size: calc(var(--text-font-size) * 0.8);
  line-height: var(--text-line-height-scaleable);
  padding: var(--common-element-size);
}

.highlight, .highlight pre {
  word-break: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
  white-space: pre-wrap;
}

/* Tables */
table {
  display: block;
  width: 100%;
  border: 1px solid var(--common-color-line);
  border-collapse: separate;
  border-spacing: 0;
  overflow-x: auto;
}

table tr:nth-child(2n), thead {
  background-color: var(--common-color-shade);
}

td, th {
  padding: var(--common-element-size);
  min-width: calc(var(--common-element-size) * 4);
}

thead th:empty {
  display:none;
}

table:has(th:not(:empty)) td {
  border-top: 1px solid var(--common-color-line);
}

td, th {
  border-left: 1px solid var(--common-color-line);
}

td, th {
  text-align: left;
  vertical-align: top;
}

td:first-child, th:first-child {
  border-left: none;
}

/* Images */
img.small-image {
  max-width: calc(var(--common-element-size) * 8);
}

img.tiny-image {
  max-width: calc(var(--common-element-size) * 4);
}

/* Title */
a.title, a.title:hover {
  display: block;
  border: inherit;
  background-color: inherit;
  color: inherit;
}

/* Utilities */
.center {
  text-align: center;
}

.block {
  display: block;
}

.inline {
  display: inline;
}

.invisible {
  display: none;
}

p mark, .infobox-inline {
  color: var(--text-color);
  display: inline-block;
  background-color: var(--infobox-background-color);
  border: 1px solid var(--infobox-border-color);
  padding: 1em;
  margin: 0.05em;
}

/* Blog post list. */
ul.blog-posts {
  list-style-type: none;
  padding: unset;
}
ul.blog-posts li {
  display: flex;
}

ul.blog-posts li span {
  flex: 0 0 130px;
}

/* Big Screen Ergonomics */
@media (min-width: 1400px) {
  nav {
    position: fixed;
    top: var(--common-element-size-2x);
    left: var(--sidebar-left-margin);
    width: var(--sidebar-width);
    height: calc(100vh - (var(--common-element-size-2x) * 2));
    overflow-y: auto;
  }

  nav * {
    display: block;
    margin-top: 0;
  }

  nav a {
    border: none;
  }
}

/* Printing Ergonomics */
@media print {
  body, .highlight, .highlight pre {
    word-break: break-word;
    overflow-wrap: break-word;
    white-space: normal;
    hyphens: auto;
  }

  .highlight, .highlight pre {
    white-space: pre-wrap;
    line-height: 1.6em;
  }

  tr, th, thead, h1, h2, h3 {
    break-inside: avoid-page;
  }

  h1::after, h2::after, h3::after {
    content: "";
    display: block;
    height: 300px;
    margin-bottom: -300px;
  }

  nav, #upvote-form small {
    display: none;
  }

  .invisible-on-print {
    display: none;
  }
}