/**
 * @author Joel Espinosa Longi
 * @licencia Atribución-CompartirIgual 4.0 Internacional  - https://creativecommons.org/licenses/by-sa/4.0/deed.es
 */

:root {
  --pages_container_width: 1280px;
  --pages_container_height: 825px;
  --left_right_margin_pages: 30px;

  --page-left-margin: 50px;
  --page-right-margin: 50px;
  --page-top-margin: 30px;
  --page-bottom-margin: 20px;
}

@page {
  margin: 0cm;
  size: 640px 825px;
}

body {
  margin: 0;
  padding: 0;
  width: 640px;
  height: 825px;
  box-sizing: border-box;
}

#book_container {
  position: relative;
  width: 100%;
  height: 100%;
  background-color: #ecf0f1;
}

#go_to_table_of_content {
  position: absolute;
  left: 0;
  top: 0;
  cursor: pointer;
  outline: none;
  border: none;
  z-index: 1;
  background-color: #ecf0f1;
  background-size: cover;
  padding: 0;
}

#go_to_table_of_content {
  background-image: url("img/table_of_content.svg");
  display: none;
}

#btn_back_page,
#btn_next_page {
  position: absolute;
  height: 100%;
  top: 0;
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  cursor: pointer;
  z-index: 1;
}

#btn_back_page {
  background-image: url("img/back.svg");
  left: 0;
  display: none;
}

#btn_next_page {
  background-image: url("img/next.svg");
  right: 0;
  display: none;
}

.page {
  position: relative;
  width: calc(var(--pages_container_width) / 2);
  height: 100%;
  background-color: white;
  box-sizing: border-box;
  padding: var(--page-top-margin) var(--page-right-margin) var(--page-bottom-margin) var(--page-left-margin);
  text-align: justify;
  page-break-before: always;
  break-before: always;
}

.page_viewer {
  position: absolute;
  transform-origin: 0 0 0;
  transform: none !important;
  width: 640px !important;
  top: calc(-1 * var(--pages_container_height)) !important;
}

#pages_container {
  position: absolute;
  transition: all 0.3s;
  -webkit-transition: all 0.3s;
  background-color: red;
  left: 0px !important;
}

#pages_container .page:nth-child(odd) {
  border-right: 1px solid rgba(0, 0, 0, 0.1);
}

.toc_link {
  font-size: 95%;
  padding: 0;
  margin-bottom: 0.5em;
  color: #222f3e;
  cursor: pointer;
  background-image: url("img/dot.svg");
}

.toc_link:hover,
.toc_link:hover a,
.toc_link:hover .toc_number {
  background-color: hsl(205, 87%, 90%);
}

.toc_link a {
  padding-left: 1em;
  padding-right: 0.2em;
  background-color: white;
  text-decoration: none;
  color: inherit;
}

.toc_number {
  background-color: white;
  float: right;
}

.page_number {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 18px;
  text-align: center;
  font-weight: bold;
  font-size: 80%;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

.footnote {
  display: block;
}

.footnote::before {
  content: attr(number);
  position: absolute;
  display: inline;
  font-size: 75%;
  left: -0;
}

.footnote_container {
  position: absolute;
  width: calc(100% - var(--page-left-margin) - var(--page-right-margin));
  bottom: 48px;
  font-size: 75%;
  border-top: 2px solid #3c6382;
  padding-left: 1em;
}

/*  */
sup {
  font-size: 65%;
  font-weight: bold;
  padding-left: 0.2em;
}

sub {
  font-size: 65%;
}

h1 {
  font-size: 160%;
  margin-top: 0;
}

.note {
  padding-left: 1em;
  padding-right: 1em;
  font-size: 90%;
}

.image_expand {
  display: block;
  margin: 0.5em auto 1em auto;
  cursor: pointer;
}

.image_link {
  position: relative;
  display: block;
  cursor: pointer;
}

.btn_link {
  position: absolute;
  width: 2em;
  height: 2em;
  right: -3px;
  top: 0;
  margin: 0;
  padding: 0;
  outline: none;
  border: none;
  border-radius: 0;
  background-color: white;
  background-size: cover;
  background-image: url("img/link.svg");
  cursor: pointer;
}

iframe {
  border: none;
}

video {
  display: block;
  margin: 1.25 auto 0 auto;
}

.btn_ampliar {
  position: absolute;
  width: 2em;
  height: 2em;
  right: 0;
  top: 0;
  margin: 0;
  padding: 0;
  outline: none;
  border: none;
  border-radius: 0;
  background-color: white;
  background-size: cover;
  background-image: url("img/ampliar.svg");
  cursor: pointer;
}

.interactive {
  position: relative;
  margin: 0 auto;
  box-sizing: border-box;
  padding: 15px 0;
  -webkit-overflow-scrolling: touch;
  overflow-y: scroll;
}

figure {
  width: 100%;
  margin: 0;
  padding: 0;
}

figcaption {
  text-align: center;
  font-size: 80%;
  margin-top: 1.5em;
  margin-bottom: 2em;
}