:root{
  --ff-sans: 'Open Sans', sans-serif;
  --fw-regular: 400;
  --fw-bold: 800;
  --f-lh: 28px;
  --c-black: #282828;
  --c-black-background: #1c1819;
  --fs-xxxl: 32px;
  --fs-xxl: 26px;
  --fs-xl: 24px;
  --fs-l: 22px;
  --fs-m: 16px;
  --padding-hamburger: 5px;
  --c-beige: #F3EDE6;
  --border-radius: 7px;
  --image-padding: 14px;
  --image-background: #ffffff;
}

@media (min-width: 1200px){
  :root {
    font-size: 1.5vw;
  }
}

/* Maximal font size should be 24px, so stop font scalling at some point (24 / (1.5/100)) */

@media (min-width: 1500px){
  :root {
    font-size: 20px;
  }
}

/* ************** */
/* *** Layout *** */
/* ************** */

body{
  margin:0;
  padding:0;
  font-family: var(--ff-sans);
  font-weight: var(--fw-regular);
  font-size: var(--fs-m);
  color: var(--c-black);
}

@media screen and (min-width: 57rem) {
  body{
    display:grid;
    grid-template-columns: 15rem 1fr;
  }
  main.main-content, main.titlepage, div.footnotes{max-width:40rem;grid-column: 2}
  main.titlepage {grid-row: 1;}
  nav.TOC{
    grid-row:1;
    grid-column: 1;
    min-height:100vh;
  }
}


/* ****************** */
/* *** Formatting *** */
/* ****************** */

main.main-content,main.titlepage,div.footnotes{
}

.permalink {
  opacity: 0.5;
  text-decoration: none;
  font-size: 0.75rem;
  line-height: 0.8rem;
  margin-left: 0.25rem;
  color: black;
  display: inline-block;
}

.sectionHead, .subsectionHead {
  display: flex;
  align-items: center;
  align-content: center;
}

p.indent, p.noindent{
  text-indent: 0;
  text-align: justify;
}
/* code{font-size:1.4rem;} */
/* figure pre.listings{font-size: 1.4rem;} */
figure.texsource, figure.shellcommand, figure.htmlsource, figure.luasource, figure.textsource{
  margin:0.5rem 0; 
  padding-left:0.5rem; 
  overflow:auto;
}
figure pre.listings{font-size: 1em;}

.chapterToc, .sectionToc, .subsectionToc{margin:0;padding:0;}
nav.TOC{
  font-size:0; /* trick to remove vertical space above TOC entries */
}

 .chapterToc ~ .likesectionToc, .chapterToc ~ .sectionToc, .likechapterToc ~ .likesectionToc, .likechapterToc ~ .sectionToc {padding-left:2em;margin-left:0}
 .chapterToc ~ .likesectionToc ~ .likesubsectionToc, .chapterToc ~ .likesectionToc ~ .subsectionToc, .chapterToc ~ .sectionToc ~ .likesubsectionToc, .chapterToc ~ .sectionToc ~ .subsectionToc, .likechapterToc ~ .likesectionToc ~ .likesubsectionToc, .likechapterToc ~ .likesectionToc ~ .subsectionToc, .likechapterToc ~ .sectionToc ~ .likesubsectionToc, .likechapterToc ~ .sectionToc ~ .subsectionToc {padding-left:4em;margin-left:0;}

nav.TOC span{
  margin-top:0;
  font-size: 16px;
}

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

.chapterToc,
.sectionToc,
.subsectionToc,
.likechapterToc {
  display: block;
}

.chapterToc a,
.sectionToc a,
.subsectionToc a,
.likechapterToc a {
  display: flex;
  flex-grow: 1;
  padding: 7px 10px 7px 15px;
  justify-content: flex-start;
  align-items: center;
}

.chapterToc span,
.sectionToc span,
.subsectionToc span {
  display: block;
}

.chapterToc .chapter_number, .sectionToc .chapter_number, .subsectionToc .chapter_number {
  margin-right: 7px;
  white-space: nowrap;
}

/* ************** */
/* *** Colors *** */
/* ************** */

body{
  background-color: var(--c-beige);
}

a {
  color: #5D9FF0;
}

main.main-content, div.footnotes, main.titlepage{
  background-color:white;
}

nav.TOC,nav.TOC a, nav.TOC a:visited{
  background-color: var(--c-black);
  color:#fff;
}

nav.TOC span:hover,
nav.TOC span:hover *,
nav.TOC span.chapterToc.selected,
nav.TOC span.chapterToc.selected a {
  background-color:#5b5a58;
}

figure.texsource, figure.shellcommand, figure.htmlsource, figure.luasource, figure.textsource{
  border:1px solid #cec1aa;
  background-color:#d5e3c6;
}

.main-content {
  line-height: var(--f-lh);
  margin-left: 30px;
}

div.footnotes {
  border: none;
  margin-right: 0;
}

.footnote-mark {
  margin-right: 3px;
}

table.tabular {
  width: 100%;
}

figure.figure {
  margin: 30px 0px 30px 0px;;
  text-align: center;
  padding: 0;
}

figcaption.caption {
  text-indent: 0;
  margin: 0;
}

.table div.center, .table div.center div.center {
  margin: 0;
}

.table, div.tabular {
  overflow-x: auto;
}

.table table {
  width: 100%;
}

.menu {
  position: relative;
}

.toggle-menu-label {
  display: none;
}

.menu input {
  display: none;
}

.menu-items {
  display: block;
  list-style: none;
  margin: 0;
  padding: 0;
  width: 300px;
}

.menu-items .chapterToc, .menu-items .likechapterToc {
  display: block;
}

.menu-items a {
  text-decoration: none;
}

.home-link {
  display: block;
}

.home-title {
  display: block;
}

.chapterToc a, .chapterToc, .likechapterToc a, .likechapterToc, .appendixToc a, .appendixToc, .addchapToc a {
  font-weight: var(--fw-bold);
}

@media (max-width: 768px) {
  .toggle-menu-label {
    display: block;
    padding: 10px;
    cursor: pointer;
  }

  .hamb{
    cursor: pointer;
    padding: var(--padding-hamburger);
    margin-right: calc(var(--padding-hamburger) * -1);
    display: flex;
    align-items: center;
    align-content: center;
    justify-content: center;
  }

  .hamb-line {
    display: block;
    filter: brightness(0) invert(1);
    background: url("menu.svg") no-repeat center center;
    background-size: contain;
    width: 30px;
    height: 30px;
    font-size: 0px;
  }

  span.hamb-line:hover  {
    background-color: transparent !important;
    font-size: 0px;
  }

  .menu-items {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--c-black);
    z-index: 1;
  }

  .menu {
    background: var(--c-black);
    display: flex;
    padding: 10px 1rem;
    position: relative;
    align-items: center;
    justify-content: space-between;
  }

  #toggle-menu:checked ~ .menu-items {
    display: block;
  }
  #toggle-menu:checked ~ .toggle-menu-label span {
    background-image: url("close.svg");
    background-color: transparent !important;
  }

  .logo {
    display: block;
    color: #000;
    font-size: 20px;
    font-weight: var(--fw-bold);
  }

  .chapterToc a, .sectionToc a, .subsectionToc a, .likechapterToc a {
    padding-left: 17px;
  }

  .menu-items .chapterToc.home-link {
    display: none;
  }

  .home-title {
    display: none;
  }
}

div.center {
  margin-left: 0 !important;
  margin-right: 0 !important;
}

main.main-content h2.chapterHead, main.main-content h2.likechapterHead {
  margin-top: 0px;
}

h1 {
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  font-size: var(--fs-xxxl);
}

h2 {
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  font-size: var(--fs-xxl);
}

h3 {
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  font-size: var(--fs-xl);
}

h4 {
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  font-size: var(--fs-l);
}

.videoWrapper {
  position: relative;
  padding-bottom: 56.25%;
  /* 16:9 */
  padding-top: 25px;
  height: 0;
}

.videoWrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.home-bread {
  max-width: 100%;
  margin-top: 1em;
}

main.main-content, div.footnotes, main.titlepage {
  background-color: var(--c-beige);
}

.main-content {
  flex: 1;
}

.wrapper {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.header {
  background-color: var(--c-black-background);
  width: 100%;
  height: 340px;
  display: flex;
  align-content: center;
  justify-content: center;
  align-items: center;
  margin-bottom: 40px;
}

.header img {
  border-radius: 0px;
  border: none;
  width: 710px;
}

body {
  display: block;
}

.book-content {
  display: flex;
  padding: 0px 40px;
  max-width: 1200px;
}

.TOC.menu {
  width: 330px;
}

.main-content {
  width: 100%;
  margin-bottom: 40px;
}

nav.TOC, nav.TOC a, nav.TOC a:visited {
  background-color: transparent;
  color: var(--c-black);
}

.menu-group {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.menu-inner {
  border: 2px solid var(--c-black);
  border-radius: var(--border-radius);
  width: 100%;
}

.menu-entry {
  padding: 1px;
  border-radius: var(--border-radius);
}

.menu-arrow {
  width: 14px;
  border: none;
  border-radius: 0px;
}

nav.TOC span:hover, nav.TOC span:hover *, nav.TOC span.chapterToc.selected, nav.TOC span.chapterToc.selected a {
  background-color: transparent;
}

.menu-entry:hover {
  background-color: #c8c8c8;
}

p.flowchart-image-wrapper {
  display: flex;
  justify-content: center;
}

.menu-items .menu-group:last-of-type .menu-arrow {
  display: none;
}

blockquote {
  margin-left: 0px;
  margin-right: 0px;
}

.crosslinks-bottom {
  margin-top: 1em;
}

.crosslinks-bottom a {
  display: inline-block;
  border-radius: var(--border-radius);
  border: 2px solid var(--c-black);
  color: var(--c-black);
  padding: 4px;
  font-weight: var(--fw-bold);
  text-decoration: none;
}
.crosslinks-bottom a.prev {
  margin-right: 7px;
}

.crosslinks-bottom a:hover {
  color: #444;
}

.menu-group.selected .menu-inner {
  background-color: #c8c8c8;
}

.TOC.menu {
  margin-bottom: 40px;
}

.mobile-banner {
  display: none;
}

figure.float, div.figure, figure.figure {
  padding: var(--image-padding);
  background: var(--image-background);
}

figure.figure p.noindent {
  text-align: center;
}

.flowchart-image-wrapper {
  text-align: center;
}

@media (max-width: 768px) {
  .header {
    display: none;
  }

  .book-content {
    padding: 0px;
    display: flex;
    width: 100%;
    flex-direction: column;
  }

  .main-content {
    width: 100%;
    margin-left: 0px;
    box-sizing: border-box;
    padding: 0px 14px;
    margin-top: 20px;
    max-width: 100%;
  }

  .TOC.menu {
    width: 100%;
    max-width: 100%;
    background: var(--c-black-background);
    box-sizing: border-box;
  }

  nav.TOC, nav.TOC a, nav.TOC a:visited {
    color: #fff;
  }
  .menu-arrow {
    display: none;
  }

  .menu-inner {
    border: none;
    border-radius: 0px;
  }

  .menu-group.selected .menu-inner {
    background: var(--c-black-background);
  }

  .menu-entry:hover {
    background-color: transparent;
  }

  .TOC.menu {
    margin-bottom: 0px;
  }

  .mobile-banner {
    display: block;
    background-color: var(--c-black-background);
    padding: 5px;
  }
  .mobile-banner a img {
    border: none;
    border-radius: 0px;
  }

  figure.float, div.figure, figure.figure {
    padding: calc(var(--image-padding) / 2);
  }
}