@import "./files/normalize.css";

:root {
  --cover-color: #5091b1;
  --link-color: var(--cover-color);
}

html {
  background: #eee;
  padding: 50px;
}

body {
  width: 700px;
  padding: 50px;
  background: #fff;
  margin: 0 auto;
  line-height: 1.4;
}

a {
  color: var(--link-color);
}

p code,
li code {
  color: #3f9c55;
}

/* Format cover page. */
.frontcover {
  background: var(--cover-color);
  color: #fff;
  padding: 50px;
  margin: -50px -50px 50px -50px;
  text-align: center;
}

.frontcover * {
  margin: 0;
}

.frontcover .description {
  width: 45%;
  margin: 20px auto;
  color: rgba(#fff, 0.7);
}

.frontcover .authors {
  font-weight: thin;
  text-transform: uppercase;
  font-size: 24px;
}

/* Define asterism. */
.chapter + .chapter:before {
  content: "\2234";
  display: block;
  text-align: center;
  font-size: 24px;
  padding: 50px 0;
}

.chapter > h2 {
  margin-top: 0;
}

// Code highlighting
.highlight {
  padding: 15px;
}

.highlight .gutter {
  color: #ccc;
  padding-right: 15px;
}

/* Table of contents */
.toc {
  padding-bottom: 50px;
  margin-bottom: 50px;
  border-bottom: 1px solid #eee;
}

// Define chapter numbering
.chapters {
  counter-reset: chapter 1;
}

.chapter {
  counter-increment: chapter;
}

.chapter h2:before {
  content: "Chapter " counter(chapter);
  display: block;
  text-transform: uppercase;
  font-weight: normal;
  color: #db0209;
  font-size: 14px;
}

.chapter h3 {
  margin-top: 50px;
}

/* Footnotes */
.footnotes {
  margin-top: 50px;
  padding-top: 25px;
  border-top: 1px solid #eee;
}

.footnotes hr {
  display: none;
}

/* Notes */
.note {
  font-size: 13px;
  float: right;
  overflow: hidden;
  position: relative;
  padding-left: 50px;
  margin: 30px 0;
}

.note:before {
  content: "!";
  display: inline-block;
  font-size: 25px;
  width: 10px;
  height: 10px;
  padding: 15px;
  line-height: 15px;
  text-align: center;
  border-radius: 50%;
  border-bottom-right-radius: 0;
  position: absolute;
  top: 5px;
  left: 0;
}

.note.info:before {
  background: #f5be28;
  color: #fff;
}

.note.warning:before {
  background: #e42e24;
  color: #fff;
}

/* Format lexers list */
.lexers-list {
  margin: 0;
  padding: 0;
  -webkit-columns: 2;
  columns: 2;
}

.lexers-list li {
  -webkit-column-break-inside: avoid;
  break-inside: avoid-column;
}

.lexers-list span {
  font-size: 13px;
}

.lexers-list li + li {
  margin-top: 15px;
}

/* Format imprint */
.imprint {
  margin-top: 50px;
  padding-top: 50px;
  border-top: 1px solid #eee;
}

.imprint * {
  margin: 0;
  font-size: 12px;
}

.imprint .description {
  margin-bottom: 10px;
}

/* Table of contents */
.table-of-contents {
  padding-bottom: 50px;
  margin-bottom: 50px;
  border-bottom: 1px solid #eee;
}

.table-of-contents .level2 {
  counter-increment: toc-level2;
  counter-reset: toc-level3;
  position: relative;
  margin-bottom: 10px;
}

.table-of-contents .level2 a {
  text-decoration: none;
  color: #000;
  text-transform: uppercase;
  font-weight: bold;
}

.table-of-contents .level2:before {
  content: "Chapter " counter(toc-level2);
  font-size: 13px;
  text-transform: uppercase;
  font-weight: bold;
  color: #aaa;
  display: block;
}

.table-of-contents .level2 ~ .level2 {
  margin-top: 40px;
}

#toc {
  -webkit-columns: 2;
  columns: 2;
}

#toc > div {
  -webkit-column-break-inside: avoid;
  break-inside: avoid-column;
}

/* Go top */
.go-top {
  font-size: 50px;
  text-decoration: none;
  position: fixed;
  bottom: 25px;
  right: 25px;
  width: 60px;
  display: inline-block;
  background: rgba(#000, 0.2);
  text-align: center;
  border-radius: 10px;
  line-height: 1;
  color: rgba(#fff, 0.4);
  padding-top: 10px;
}

.go-top:hover {
  color: #fff;
}