/**************************************
    $ CUSTOM TYPEFACE - ET Book
/**************************************/
/* ET Book Regular */
@font-face {
  font-family: "et-book";
  src: url("/fonts/et-book-roman-line-figures.eot");
  src: url("/fonts/et-book-roman-line-figures.eot?#iefix") format("embedded-opentype"),
       url("/fonts/et-book-roman-line-figures.woff") format("woff"),
       url("/fonts/et-book-roman-line-figures.ttf") format("truetype"),
       url("/fonts/et-book-roman-line-figures.svg#etbookromanosf") format("svg");
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

/* ET Book Italic */
@font-face {
  font-family: "et-book";
  src: url("/fonts/et-book-display-italic-old-style-figures.eot");
  src: url("/fonts/et-book-display-italic-old-style-figures.eot?#iefix") format("embedded-opentype"),
       url("/fonts/et-book-display-italic-old-style-figures.woff") format("woff"),
       url("/fonts/et-book-display-italic-old-style-figures.ttf") format("truetype"),
       url("/fonts/et-book-display-italic-old-style-figures.svg#etbookromanosf") format("svg");
  font-weight: normal;
  font-style: italic;
  font-display: swap;
}

/* ET Book Bold */
@font-face {
  font-family: "et-book";
  src: url("/fonts/et-book-bold-line-figures.eot");
  src: url("/fonts/et-book-bold-line-figures.eot?#iefix") format("embedded-opentype"),
       url("/fonts/et-book-bold-line-figures.woff") format("woff"),
       url("/fonts/et-book-bold-line-figures.ttf") format("truetype"),
       url("/fonts/et-book-bold-line-figures.svg#etbookromanosf") format("svg");
  font-weight: 600;
  font-style: bold;
  font-display: swap;
}

/**************************************
    $ CRITICAL CSS
/**************************************/
* {
  text-rendering: optimizeLegibility;
  font-kerning: auto;
}

html {
  font-family: sans-serif;
  -webkit-text-size-adjust: 100%;
}

body {
  -webkit-font-smoothing: antialiased;
  background: #fffff8;
  color: #111;
  counter-reset: sidenote-counter;
  font: 1.4rem/2rem "et-book", Palatino, "Palatino Linotype", "Palatino LT STD", "Book Antiqua", Georgia, serif;
  height: 100%;
  margin: 0 auto;
  max-width: 1440px;
  padding-left: 12.5%;
  padding-top: 5rem;
  width: 87.5%;
}

h1, h2, h3, h4, h5, h6 {
  font-style: italic;
  font-weight: normal;
  line-height: 1;
  margin: 0;
  text-transform: capitalize;
}

h1 { font-size: 3.2rem; font-style: normal; margin-top: 2.6rem; }
h2 { font-size: 2.2rem; margin-top: 4.2rem; }
h3 { font-size: 1.7rem; margin-top: 2.6rem; }

p, table, blockquote, pre, img, hr, .mini-note, ul li, ol li {
  box-sizing: border-box;
  max-width: 55%;
}

.MathJax_SVG_Display {
  max-width: 55% !important;
}

li ul li, li ol li {
  max-width: 100%;
}

p {
  position: relative;
}

a, a:visited {
  color: #111;
}

a:hover {
  color: rgb(220, 40, 40);
}

blockquote {
  font-style: italic;
  margin: 0;
  padding: 2rem 0 2rem 4rem;
}

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

figure {
  align-items: flex-start;
  display: flex;
  margin: 0;
  padding: 0;
  position: relative;
}

hr {
  background: #111;
  border: 0;
  height: 1px;
  margin: 4rem 0;
  width: 100%;
}

pre {
  font-size: 80%;
  margin: 0;
  padding: 1rem;
  overflow-x: auto;
}

code {
  font-size: 80%;
}

img {
  height: auto;
  margin-right: 4rem;
  width: 100%;
}

/**************************************
    $ DEFAULT ELEMENTS
/**************************************/
table {
  border-collapse: separate;
  border-spacing: 1.5rem .5rem;
  margin: 0 6rem 0 -1.5rem;
  text-align: left;
  width: 100%;
}

table th, table td {
  font-weight: bold;
  padding: 0;
}

table th:not(:first-child), table td:not(:first-child) {
  text-align: right;
}

table thead th {
  border-bottom: 1px solid #111;
}

/**************************************
    $ DEFAULT CLASSES
/**************************************/
.subtitle {
  font-size: 1.8rem;
  font-style: italic;
}

.sans {
  font-family: "Gill Sans", "Gill Sans MT", Calibri, sans-serif;
  letter-spacing: .03em;
}

.caps {
  font-variant: small-caps;
}

.italics {
  font-style: italic;
}

.marginnote, .sidenote, figcaption {
  font-size: 80%;
  left: calc(100% + 4rem);
  line-height: 1.3rem;
  max-width: 400px;
  padding-top: 1rem;
  position: absolute;
  top: 0;
  width: 50%;
}

.sidenote:before {
  content: counter(sidenote-counter) " ";
  font-family: et-book-roman-old-style;
  position: relative;
  top: -0.5rem;
  vertical-align: baseline;
}

.sidenote-number {
  counter-increment: sidenote-counter;
}

.sidenote-number:after {
  content: counter(sidenote-counter);
  font-family: et-book-roman-old-style;
  font-size: 80%;
  left: 0.1rem;
  position: relative;
  top: -0.5rem;
  vertical-align: baseline;
}

figure .marginnote, figure .sidenote, figure figcaption {
  left: auto;
  position: relative;
}

.mini-note {
  display: block;
  font-size: 80%;
  font-style: italic;
}

.epigraph {
  margin: 4rem 0;
}

.epigraph blockquote {
  font-style: italic;
  margin: 2rem 0;
}

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

/**************************************
    $ CONTAINERS
/**************************************/
.bottom-footer {
  margin: 6rem 0;
}

/**************************************
    $ NAVIGATION
/**************************************/
nav {
  margin-bottom: 6rem;
  margin-top: 1rem;
}

nav .menu-icon {
  cursor: pointer;
  display: none;
  text-decoration: underline;
}

nav .menu-btn {
  display: none;
}

nav .menu-btn:checked ~ .site-nav {
  display: block;
}

nav ul.site-nav {
  list-style: none;
  margin: 0;
  padding: 0;
}

nav ul.site-nav li {
  display: inline-block;
  margin: 0 1.5rem 0 0;
}

nav ul.site-nav a, nav ul.site-nav a:visited {
  text-decoration: none;
}

/**************************************
    $ MEDIA QUERIES - TABLET
/**************************************/
@media (max-width: 850px) {
  body {
    padding: 10px;
    width: calc(100% - 20px);
  }

  h2.title { margin-top: 2rem; }

  p, table, blockquote, pre, img, hr, .mini-note, ul li, ol li {
    max-width: 100%;
  }

  .MathJax_SVG_Display {
    max-width: 100% !important;
  }

  nav .menu-icon {
    display: inline-block;
  }

  nav ul.site-nav {
    display: none;
  }

  nav ul.site-nav li {
    display: block;
    margin: 1rem 0;
    width: 100%;
  }

  nav ul.site-nav a, nav ul.site-nav a:visited {
    display: block;
    width: 100%;
  }

  figure {
    flex-direction: column;
  }

  .marginnote, .sidenote, figcaption {
    display: block;
    left: auto;
    margin-top: 1rem;
    position: relative;
    top: auto;
    width: 100%;
  }
}

/**************************************
    $ DARK MODE
/**************************************/
@media (prefers-color-scheme: dark) {
  body {
    background: #191919;
    filter: invert(1);
  }
  .highlight {
    border-color: grey !important;
  }
  img, iframe, .highlight, a:hover, a:focus {
    filter: invert(1);
  }
}