@charset "UTF-8";

/* Based on https://edwardtufte.github.io/tufte-css/ */

html {
  font-size: 93.75%;
  font-family: et-book, Palatino, "Palatino Linotype", "Palatino LT STD",
    "Book Antiqua", Georgia, serif;
  line-height: 2rem;
  background: #fffff8;
  color: #111;

  --line-color: rgba(0, 0, 0, 0.1);
}

body {
  margin: 0;
  counter-reset: sidenote;
}

header > *,
article > *,
main > *,
section > * {
  grid-column: primary-column;
}

header,
article,
main,
section {
  grid-column: window-width;
  margin-left: 0;
  margin-right: 0;
  display: grid;
  row-gap: 1.4rem;
  overflow: hidden;
  grid-template-columns:
    [window-width-start] minmax(12.5%, 1fr)
    [primary-column-start wide-content-start span-columns-start] min(48%, 770px)
    [primary-column-end] min(5%, 80px)
    [secondary-column-start] min(24%, 365px)
    [secondary-column-end span-columns-end wide-content-end] minmax(10.5%, 1fr)
    [window-width-end];
}

@media (max-width: 760px) {
  header,
  article,
  main,
  section {
    grid-template-columns:
      [window-width-start wide-content-start] 8%
      [span-columns-start primary-column-start] 4%
      [secondary-column-start] auto [secondary-column-end primary-column-end span-columns-end]
      8% [wide-content-end window-width-end];
  }
}

@media (prefers-color-scheme: dark) {
  body {
    background: #151515;
    color: #ddd;
  }
}

header {
  background: rgba(0, 0, 0, 0.05);
}

header a {
  padding: 0.2rem 0;
  text-decoration: none;
}

article,
main {
  padding: 5vh 0;
}

section {
  padding: 1rem 0;
}

p {
  font-size: 1.4rem;
  margin: 0;
}

h1 {
  font-weight: 400;
  margin-top: 4rem;
  margin-bottom: 0;
  font-size: 3.2rem;
  line-height: 1.1;
  grid-column: span-columns;
}

h2 {
  font-style: italic;
  font-weight: 400;
  margin-top: 2.1rem;
  margin-bottom: 0;
  font-size: 2.2rem;
  line-height: 1.1;
}

h3 {
  font-style: italic;
  font-weight: 400;
  font-size: 1.7rem;
  margin-top: 2rem;
  margin-bottom: 0;
  line-height: 1.2;
}

/* Subheading */
h1 + p {
  font-style: italic;
  margin-top: 0;
  margin-bottom: 0.4rem;
  font-size: 1.8rem;
  line-height: 1.2;
  grid-column: span-columns;
}

hr {
  display: block;
  height: 1px;
  width: 55%;
  border: 0;
  border-top: 1px solid #ccc;
  margin: 1em 0;
  padding: 0;
}

a:link,
a:visited {
  color: inherit;
  text-underline-offset: 0.1em;
  text-decoration-thickness: 0.05em;
}

.numeral {
  font-family: et-book-roman-old-style;
}

dl,
ol,
ul {
  font-size: 1.4rem;
  padding-left: 5%;
  margin: 0;
}

li {
  padding: 0.4rem 0;
}

img,
video,
audio {
  max-width: 100%;
}
audio {
  height: 3rem;
}

aside,
.caption {
  grid-column: secondary-column;
  font-size: 1.1rem;
  line-height: 1.3;
}

@media (max-width: 760px) {
  aside {
    margin-top: 0;
  }
}

.aside-ref {
  vertical-align: super;
  font-size: 1rem;
  font-family: et-book-roman-old-style;
  line-height: 1;
  padding-left: 0.1em;
}

/* Block quotes */

blockquote {
  font-size: 1.4rem;
}

blockquote footer {
  font-size: 1.1rem;
  text-align: right;
}

/* Code and code blocks */

pre {
  margin: 0 0 -0.8rem 5%;
  padding-bottom: 0.8rem;
  overflow-x: auto;
}

section > pre {
  grid-column: span-columns;
}

@media (max-width: 760px) {
  section > pre:hover,
  section > pre:focus {
    margin: 0;
    grid-column: window-width;
    padding: 0.5rem;
    border-top: 1px solid var(--line-color);
    border-bottom: 1px solid var(--line-color);
  }
}

aside > pre {
  margin: 0.8rem 0;
}

code,
pre > code {
  font-family: Consolas, "Liberation Mono", Menlo, Courier, monospace;
  font-size: 0.9rem;
  line-height: 1.42;
}

pre > code {
  display: block;
}

/* Tables */

table {
  font-family: "Trebuchet MS", "Gill Sans", "Gill Sans MT", sans-serif;
  width: 100%;
}

th {
  text-align: left;
  vertical-align: bottom;
  position: sticky;
  line-height: 1.42;
  top: 0;
}

th,
td {
  white-space: pre-line;
  border-bottom: 1px solid var(--line-color);
  padding-right: 1rem;
}
th:last-child,
td:last-child {
  padding-right: 0;
}

/* Chapter Epigraphs */

.epigraph {
  margin: 5em 0;
}

.epigraph > blockquote {
  margin-top: 3em;
  margin-bottom: 3em;
}

.epigraph > blockquote,
.epigraph > blockquote > p {
  font-style: italic;
}

.epigraph > blockquote > footer {
  font-style: normal;
}

.epigraph > blockquote > footer > cite {
  font-style: italic;
}