/* tame reveal.js */
section {
  min-height: 100vh;
  width: 100vw;
  padding: 0 !important;
}
* {
  line-height: inherit;
}

/* config */
:root {
  --primary: #f8f281;
  --secondary: #bbd6ec;
  --secondary-dark: #3f5d75;
  --margin: 0.1;
}

/* basic layout */
:root {
  --square: 100vw;
  @media screen and (min-aspect-ratio: 1/1) {
    --square: 50vw;
  }
  @media screen and (min-aspect-ratio: 2/1) {
    --square: 100vh;
  }
}

body {
  font-size: calc(0.035 * var(--square));

  .layout-content-and-preview,
  .layout-content-only {
    display: grid;
    min-height: 100vh;
    max-height: 100vh;
    min-width: 100vw;
    max-width: 100vw;
    overflow: auto;
  }

  .layout-content-and-preview {
    grid-template-rows: var(--square) auto;
    grid-template-columns: auto;
    grid-template-areas:
      "content"
      "preview";
    background: linear-gradient(to bottom,
      white 0%,
      white var(--square),
      var(--secondary) var(--square),
      var(--secondary) var(--square));
    @media screen and (min-aspect-ratio: 1/1) {
      grid-template-rows: auto var(--square) auto;
      grid-template-columns: var(--square) auto;
      grid-template-areas:
        "   .    preview"
        "content preview"
        "   .    preview";
      background: linear-gradient(to right, white 0%, white var(--square), var(--secondary) var(--square), var(--secondary) 100%);
    }
    @media screen and (min-aspect-ratio: 2/1) {
      grid-template-rows: var(--square);
      grid-template-columns: var(--square) auto;
      grid-template-areas:
        "content preview";
    }
  }

  .layout-content-only {
    grid-template-rows: var(--square) auto;
    grid-template-columns: var(--square);
    grid-template-areas:
      "content"
      "   .   ";
    background: linear-gradient(to bottom, white 0%, white var(--square), var(--secondary) var(--square), var(--secondary) 100%);
    @media screen and (min-aspect-ratio: 1/1) {
      grid-template-rows: auto var(--square) auto;
      grid-template-columns: auto var(--square) auto;
      grid-template-areas:
        ".    .    ."
        ". content ."
        ".    .    .";
      background: linear-gradient(to right,
        var(--secondary) 0%,
        var(--secondary) calc((100% - var(--square)) / 2),
        white calc((100% - var(--square)) / 2),
        white calc(100% - (100% - var(--square)) / 2),
        var(--secondary) calc(100% - (100% - var(--square)) / 2),
        var(--secondary) 100%);
    }
  }

  .layout-content {
    background: white;
    grid-area: content;
    position: relative;
  }

  .layout-preview {
    grid-area: preview;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--secondary);
    img {
      width: auto;
      height: auto;
      max-width: 90%;
      max-height: 90%;
      box-shadow: .2em .2em .5em 0 rgba(0, 0, 0, .3);
    }
  }

  .layout-two-columns {
    display: grid;
    min-height: 100vh;
    max-height: 100vh;
    min-width: 100vw;
    max-width: 100vw;
    overflow: auto;
    grid-template-rows: auto auto auto 1fr;
    grid-template-columns: var(--square);
    grid-template-areas:
      "title"
      "column1"
      "column2"
      ".";
    background: var(--secondary);
    @media screen and (min-aspect-ratio: 1/1) {
      grid-template-rows: auto calc(0.18 * var(--square)) calc(0.82 * var(--square)) auto;
      grid-template-columns: var(--square) var(--square);
      grid-template-areas:
        "   .       .   "
        " title   title "
        "column1 column2"
        "   .       .   ";
    }
    @media screen and (min-aspect-ratio: 2/1) {
      grid-template-rows: calc(0.18 * var(--square)) calc(0.82 * var(--square));
      grid-template-columns: auto var(--square) var(--square) auto;
      grid-template-areas:
        ".  title   title  ."
        ". column1 column2 .";
    }

    .layout-title {
      grid-area: title;
      background: var(--secondary);
    }

    .layout-column-one {
      grid-area: column1;
      background: white;
    }

    .layout-column-two {
      grid-area: column2;
      background: white;
    }
  }
}

/* content layout */

@font-face {
  font-family: 'Fira Sans';
  src: url('../../lib/font/fira-sans/FiraSans-Regular.ttf');
  font-weight: 400;
}
@font-face {
  font-family: 'Fira Sans';
  src: url('../../lib/font/fira-sans/FiraSans-Bold.ttf');
  font-weight: 700;
}
@font-face {
  font-family: 'Fira Code';
  src: url('../../lib/font/fira-code/FiraCode-Regular.otf');
  font-weight: 400;
}
@font-face {
  font-family: 'Fira Code';
  src: url('../../lib/font/fira-code/FiraCode-Bold.otf');
  font-weight: 700;
}

body {
  font-family: 'Fira Sans';
  margin: 0;
  line-height: 1.2em;
}

.layout-content-and-preview,
.layout-content-only {
  .layout-content {
    overflow: auto;
    padding: calc(var(--margin) * var(--square));

    *:first-child {
      margin-top: 0;
    }

    .layout-title {
      padding: calc(0.3 * var(--margin) * var(--square)) 0;
      line-height: 1.15em;

      h2 {
        margin: 0;
        line-height: 1.15em;
      }
    }

    ul {
      list-style-type: none;
      padding-left: 0;
      position: relative;
      li::before {
        content: '▪';
        color: var(--secondary);
        position: absolute;
        left: calc(-0.33 * var(--margin) * var(--square));
      }
      ul {
        margin-left: calc(0.33 * var(--margin) * var(--square));
      }
    }

    pre {
      margin-left: calc(-1 * var(--margin) * var(--square));
      padding-left: calc(var(--margin) * var(--square));
      line-height: 1.2em;
      position: relative;
      overflow: hidden;
      &::before {
        content: attr(data-sourcefile);
        position: absolute;
        text-align: right;
        color: var(--secondary);
        top: .85em;
        width: 100%;
        left: calc(-1 * var(--square) + 1.2 * var(--margin) * var(--square));
        transform-origin: top right;
        transform: rotate(-90deg);
      }
      code {
        padding: .3em 0;
      }
    }

    code {
      font-size: 0.9em;
      font-family: 'Fira Code';
    }
  }
}

.layout-two-columns {
  .layout-title {
    padding: calc(0.3 * var(--margin) * var(--square)) calc(var(--margin) * var(--square));
    h2 {
      line-height: 1.15em;
    }
  }

  .layout-column-one,
  .layout-column-two {
    padding: calc(var(--margin) * var(--square));
    padding-top: 0;

    *:first-child {
      margin-top: 0;
    }

    ul {
      list-style-type: none;
      padding-left: 0;
      position: relative;
      li::before {
        content: '▪';
        color: var(--secondary);
        position: absolute;
        left: calc(-0.33 * var(--margin) * var(--square));
      }
      ul {
        margin-left: calc(0.33 * var(--margin) * var(--square));
      }
    }

    pre {
      margin: 0 calc(-1 * var(--margin) * var(--square));
      line-height: 1.2em;
      position: relative;
      overflow: hidden;
      &::before {
        content: attr(data-sourcefile);
        position: absolute;
        text-align: right;
        color: var(--secondary);
        top: .85em;
        width: 100%;
        left: calc(-1 * var(--square) + 1.2 * var(--margin) * var(--square));
        transform-origin: top right;
        transform: rotate(-90deg);
      }
      code {
        padding: .3em calc(var(--margin) * var(--square));
      }
    }

    code {
      font-size: 0.9em;
      font-family: 'Fira Code';
    }
  }
}

.layout.layout-chapter-heading {
  height: 100vh;
  width: 100vw;
  position: relative;

  .layout-title {
    position: absolute;
    left: 2vw;
    width: calc(100vw - 4vw);
    text-align: center;
    bottom: calc(38.2% - .5em);
  }
}

h1 {
  position: absolute;
  font-size: 300%;
  bottom: 0;
  left: 0;
  line-height: 115%;
  vertical-align: bottom;
  max-width: var(--square);
  padding: 0 calc(var(--margin) * var(--square)) .5em;
}

h2 {
  line-height: 1.2;
}

h2[data-category]::before {
  content: attr(data-category);
  font-size: .7em;
  font-variant: small-caps;
  text-transform: lowercase;
  background: black;
  color: white;
  padding: .1em .5em;
  display: inline-block;
  vertical-align: baseline;
  letter-spacing: .1em;
  position: relative;
  // left: calc(-1 * var(--margin) * var(--square));
  // margin-right: calc(-1 * var(--margin) * var(--square) + 1em);
  margin-left: calc(-1 * var(--margin) * var(--square));
  padding-left: calc(var(--margin) * var(--square));
  margin-right: .5em;
}

img {
  width: auto;
  max-width: 100%;
}

table {
  width: calc(var(--square) - var(--margin) * var(--square));
  margin-left: calc(-1 * var(--margin) * var(--square));
  border-spacing: 0;
  tr:nth-child(2n-1) {
    background: var(--secondary);
  }
  tr>*:first-child {
    padding-left: calc(var(--margin) * var(--square));
  }
  th, td {
    text-align: left;
    vertical-align: top;
    padding: .3em 0;
  }
}

.box, blockquote {
  margin-left: calc(-1 * var(--margin) * var(--square));
  padding: .8em .1em .1em calc(var(--margin) * var(--square));
}

.box.warning {
  background: var(--primary);
}

blockquote {
  color: var(--secondary-dark);
  text-indent: -.55em;
  padding-bottom: .8em;
  &::before {
    content: '»';
    color: var(--secondary-dark);
  }
  cite::before {
    content: ' – '
  }
}