$font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
$width: 680px;

$lightBg: white;
$lightText: black;
$darkBg: #383838;
$darkText: white;

:root {
  color-scheme: light dark;
}

body {
  background-color: $darkBg;
  color: $darkText;
}
body.light {
  background-color: $lightBg;
  color: $lightText;
}

@media (prefers-color-scheme: light) {
  body {
    background-color: $lightBg;
    color: $lightText;
  }
  body.dark {
    background-color: $darkBg;
    color: $darkText;
  }
}

* {
  box-sizing: border-box;
  word-break: break-word;
}

html {
  scroll-behavior: smooth;
}

header, footer {
  background-color: black;
  color: white;
}

header {
  position: sticky;
  top: 0;
  z-index: 9;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  display: flex;
  flex-direction: column;
  font-family: $font;
  font-weight: 400;
  font-style: normal;
}

h1 {
  margin: 0rem;
  margin-bottom: 0.5rem;
  margin-top: 0.5rem;
}

p {
  margin: 0.5rem;
}

a {
  text-decoration: none;
  color: {{ .Site.Params.color.secondary }};
}

{{ if .Site.Params.list.icon }}

  ul {
    list-style: none;
    padding-left: 1rem;
  }

  ul li {
    display: flex;
  }

  ul li:before {
    content: url({{ .Site.Params.list.icon }});
    display: inline-block;
    width: 21px;
    height: 21px;
    margin-right: 10px;
    flex-shrink: 0;
  }

{{ end }}

.col-3 {flex: 25%; width: 25%; max-width: 25%;}
.col-4 {flex: 33.33%; width: 33.33%; max-width: 33.33%;}
.col-5 {flex: 41.66%; width: 41.66%; max-width: 41.66%;}
.col-6 {flex: 50%; width: 50%; max-width: 50%;}
.col-7 {flex: 58.33%; width: 58.33%; max-width: 58.33%;}
.col-8 {flex: 66.66%; width: 66.66%; max-width: 66.66%;}
.col-9 {flex: 75%; width: 75%; max-width: 75%;}
.col-10 {flex: 83.33%; width: 83.33%; max-width: 83.33%;}
.col-11 {flex: 91.66%; width: 91.66%; max-width: 91.66%;}
.col-12 {flex: 100%; width: 100%; max-width: 100%;}

[class*="col-"] {
  float: left;
}

.rotate-45 {-webkit-transform: rotate(45deg); -moz-transform: rotate(45deg); -ms-transform: rotate(45deg); -o-transform: rotate(45deg); transform: rotate(45deg);}
.rotate-90 {-webkit-transform: rotate(90deg); -moz-transform: rotate(90deg); -ms-transform: rotate(90deg); -o-transform: rotate(90deg); transform: rotate(90deg);}
.rotate-180 { -webkit-transform: rotate(180deg); -moz-transform: rotate(180deg); -ms-transform: rotate(180deg); -o-transform: rotate(180deg); transform: rotate(180deg);}

.row {
  display: flex;
  flex-wrap: wrap;
  flex-flow: column;
}

/* Header */

.header {
  display: flex;
  flex-direction: row;
  width: 100%;
  max-width: $width;
  margin: auto;
  padding: 10px;
  font-size: large;
}

.header i {
  font-size: x-large;
}

.header > .items {
  display: flex;
  flex-grow: 1;
  justify-content: right;
}

.header > .items > .item {
  align-self: center;
  padding-inline-end: 16px;
}

.progress {
  background: {{ .Site.Params.color.primary }};
  height: 5px;
  width: 0%;
  position: fixed;
  top: 0;
  z-index: 10;
}

#theme-toggler {
  border: none;
  background: inherit;
  color: {{ .Site.Params.color.secondary }};
  cursor: pointer;
}

/* Footer */

.footer {
  display: flex;
  flex-direction: column;
  padding-block-start: 16px;
  font-size: medium;
  text-align: center;
}

.footer > .social {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: center;
}

.footer > .social i {
  font-size: x-large;
}

.footer > .social a {
  padding-inline: 6px;
  color: {{ .Site.Params.color.primary }};
}

.footer > .links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  padding: 0;
}

.footer > .links .link {
  display: flex;
  padding-inline: 16px;
}

.footer > .links .link a {
  color: inherit;
}

.footer > .links .link:before {
  content: none;
}

.footer > .copyright {
  font-size: small;
}

.totop {
  display: inline-flex;
  background-color: {{ .Site.Params.color.primary }};
  color: #f2f2f2;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  margin: 20px;
  position: fixed;
  bottom: 0px;
  right: 0px;
  transition: background-color .3s;
  z-index: 10;
  visibility: hidden;
  opacity: 0;
}

.totop:hover {
  filter: brightness(60%);
}

.totop.show {
  visibility: visible;
  opacity: 1;
}

/* Sections */

.table-of-contents {
  position: fixed;
  left: 0px;
  top: 0px;
  height: 100%;
  display: flex;
  flex-direction: row;

  .extend {
    margin: auto;
    padding-block: 1rem;
    padding-inline: 0.4rem;
    border-radius: 0rem 0.5rem 0.5rem 0rem;
    background-color: black;
    cursor: pointer;
  }
}

#TableOfContents {
  display: none;
  margin: auto;
  padding-inline: 20px;
  border-radius: 0rem 0.5rem 0.5rem 0rem;
  background-color: black;
  font-size: larger;

  ul {
    counter-reset:toc1; 
    list-style-type:none;
    padding-inline-start: 0rem;
    padding-block: 0.5rem;
  }

  li {
    list-style-type:none;

    ul {
      counter-reset:toc2;

      li {
        list-style-type:none;

        ul {
          counter-reset:toc3;

          li:before {
            counter-increment:toc3;
            content:counter(toc1) "." counter(toc2) "." counter(toc3) " ";
          }
        }
      }

      li:before {
        counter-increment:toc2;
        content:counter(toc1) "." counter(toc2) " ";
      }
    }
  }

  li:before {
    counter-increment:toc1;
    content:counter(toc1) ". ";
  }
}

#TableOfContents.show {
  display: block;
}

#content {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.title h1 {
  font-size: xxx-large;
  padding-block-end: 3rem;
}

main > .content {
  padding-top: 9rem;
  padding-bottom: 2rem;
  padding-right: 1.5rem;
  padding-left: 1.5rem;
  width: 100%;
  max-width: $width;
  margin: 0;
  align-self: center;
  flex-grow: 1;
}

.section {
  padding-top: 2rem;
  padding-bottom: 2.5rem;
  padding-right: 1.5rem;
  padding-left: 1.5rem;
  width: 100%;
  margin: 0;
  align-self: center;
  flex: 1 0 auto;
}

.section.even {
  // background-color: #eee;
}

.section.highlight {
  background-color: {{ .Site.Params.color.primary }};
}

.section > .content {
  width: 100%;
  max-width: $width;
  margin: auto;
  justify-content: center;
}

.hero > .content {
  display: flex;
  justify-content: center;
}

.hero > .content > .image {
  max-width: 150px;
}

.hero > .description {
  padding: 10px;
  position: relative;
  margin-block-start: 50px;
  border: none;
}

.hero > .description::before,
.hero > .description::after {
  position: absolute;
  width: 33px;
  height: 25px;
  content: "";
}

.hero > .description::before {
  left: 0;
  top: 0;
  border-left: 3px solid {{ .Site.Params.color.primary }};
  border-top: 3px solid {{ .Site.Params.color.primary }};
}

.hero > .description::after {
  right: 0;
  bottom: 0;
  border-right: 3px solid {{ .Site.Params.color.primary }};
  border-bottom: 3px solid {{ .Site.Params.color.primary }};
}

.hero > .content > .heading {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-inline-start: 25px;
}

.hero > .content .social {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
}

.hero > .content .social i {
  font-size: x-large;
}

.hero > .content .social a {
  padding-inline: 6px;
  color: {{ .Site.Params.color.primary }};
}

/* Buttons */
/* TODO: test */
.button {
  font-family: inherit;
  font-size: 100%;
  line-height: inherit;
  color: inherit;
  background-color: transparent;
  background-image: none;
  text-transform: none;
  padding: 0;
}

.button:hover {
  filter: brightness(60%);
}

.button.filled {
  background-color: {{ .Site.Params.color.primary }};
  color: white;
  border: 2px solid {{ .Site.Params.color.primary }};
  border-radius: 4px;
  padding: 0.5rem 1.5rem;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 1rem;
}

.button.outlined {
  background-color: transparent;
  color: {{ .Site.Params.color.primary }};
  border: 2px solid {{ .Site.Params.color.primary }};
  border-radius: 4px;
  padding: 0.5rem 1.5rem;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 1rem;
}

.button.outlined:hover {
  background-color: {{ .Site.Params.color.primary }};
  color: white;
}

/* Images */

img {
  max-width: 100%;
  height: auto;
  margin: auto;
  object-fit: contain;
  border-radius: 6px;
}

.avatar {
  border-radius: 50%;
  border: 3px solid {{ .Site.Params.color.primary }};
  object-fit: cover;
}

.caption {
  text-align: center;
  color: gray;
  font-size: small;
  margin: 0px;
}