style.less

// Main colors
@primary-darkest: #2581B7;    // Navigation selected state
@primary-dark: #2F8DBC;       // Navigation hover state
@primary: #4F99C4;            // Section headings and side-bar background
@primary-light: #CAE8FA;      // Borders & horizontal rules
@primary-lightest: #E0F3FF;   // Background for Example

// Neutral Text
@text-dark: #273D44;            // Dark headings and bold items
@text-medium: rgba(0,0,0,.45);  // Body copy (paragraphs, lists, etc.)

// Links
@link-color: #089970;         // Link text
@link-background: #E4F7F0;    // Link background when hovered

// Layout
@aside-width: 230px;          // Width of the navigation side bar
@base-font-size: 16px;        // Base font size for body copy

body {
  font-family: "Fira Sans","Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 16px;
  padding: 0;
  margin: 0;

  * {
    padding: 0;
    margin: 0;
    font-size: inherit;
    font-weight: 400;
  }
}

// Basic content & tags

h1 {
  font-size: 32px;
  margin: 0 0 35px 0;
  color: @text-dark;
  position: relative;
  line-height: 120%;
}

h2 {
  font-size: 32px;
  font-style: italic;
  color: @primary-darkest;
  margin: 30px 0 20px 0;
}

h3 {
  color: @primary-darkest;
  font-size: 20px;
  font-weight: 500;
  margin: 20px 0 8px 0;
}

h4 {
  color: @text-dark;
  margin: 0 0 10px 0;
  font-size: 18px;
}

p, li {
  color: @text-medium;
  line-height: 160%;
}

ul, ol {
  margin: 0 0 30px 0;

  li {
    margin-bottom: 6px;
  }
}

ul {
  li {
    list-style-type: none;
    position: relative;

    &:before {
      content: ".";
      position: absolute;
      left: -15px;
      font-weight: 700;
      color: inherit;
      font-size: 25px;
      top: -6px;
    }
  }
}

strong {
  font-weight: 500;
  color: @text-dark;
}

p {
  margin: 0 0 30px 0;
}

a {
  color: @link-color;
  transition: background .05s ease-out;

  &:hover {
    background: @link-background;
  }
}


// The main conent wrapper

article {
  max-width: 750px;
  min-width: 500px;
  position: relative;
  padding: 20px 0 40px @aside-width + 65;
  margin-right: 55px;
  z-index: 1;
}

.logo {
  position: relative;
  left: -12px;
  width: 175px;
  margin-bottom: 10px;

  a:hover {
    background: none;
    opacity: .8;
  }
}

// Example callout box

.example {
  display: flex;
  margin: 35px 0 40px 0;
  background: @primary-lightest;
  color: @primary-darkest;
  padding: 30px 35px;

  .title {
    flex: 1;
    color: inherit;

    h1 {
      width: 100%;
      padding: 0 0 2px 0;
      font-size: 20px;
      font-style: italic;
      position: relative;
      top: 3px;
      color: inherit;
    }
  }

  .content {
    flex: 2;
    color: inherit;
    position: relative;
    padding-left: 22px;

    &:after {
      content: "";
      width: 2px;
      left: -2px;
      top: 4px;
      height: ~"calc(100% - 8px)";
      position: absolute;
      background: @primary-light;
    }

    p:last-child {
      margin: 0;
    }

    * {
      color: inherit;
    }
  }

}

// Summary, audience and duration
.meta-information {
  display: flex;
  margin: 0 -20px 50px -20px;

  .summary, .details {
    margin: 0 20px;
  }

  .summary {
    flex: 2;
    font-size: 18px;
    line-height: 145%;
    padding: 0 0 0 28px;
    font-style: italic;
    position: relative;

    &:after {
      content: "";
      width: 3px;
      height: ~"calc(100% - 10px)";
      left: 0;
      top: 5px;
      position: absolute;
      background: @primary-light;
    }
  }

  .details {
    flex: 1;

    time, .difficulty {
      color: @primary-darkest;
      font-weight: 700;
      margin-bottom: 3px;
      display: block;
    }

    time:before {
      content:   "\f017";
      font-family: FontAwesome;
      margin-right: 6px;
    }

    .difficulty:before {
      content:   "\f007";
      font-family: FontAwesome;
      margin-right: 6px;
    }
  }
}

// Format, target audience & materials
.presentation-details {
  display: flex;
  margin: 0 -20px 35px -20px;

  section {
    flex: 1;
    margin: 0 20px;

    :last-child {
      margin-bottom: 0;
    }

  }
}

// Side-bar with navigation
aside {
  background: @primary;
  position:fixed;
  height: 100vh;
  width: @aside-width;
  top: 0;
  z-index: 2;

  .image {
    position: relative;

    img {
      width: ~"calc(100% - 20px)";
    }
  }
}

/* Left-side Navigation */

nav {
  padding: 0;
  margin: 15px 0 80px 0;
  list-style-type: none;
  position: relative;

  a {
    display: block;
    position: relative;
    text-decoration: none;
    color: rgba(255,255,255,.7);
    padding: 18px 34px;
    transition: background .05s ease-out;

    &.selected, &.selected:hover {
      background: @primary-darkest;
      color: white;
      font-weight: 500;
    }

    &:hover {
      background: @primary-dark;
      color: rgba(255,255,255,1);
    }

    &:after {
      content: "";
      background: ~"url(images/nav-selected-indicator.svg)";
      background-position: top left;
      background-repeat: no-repeat;
      background-size: contain;
      height: 100%;
      width: 20px;
      position: absolute;
      top: 0;
      right: 0;
      opacity: 0;
      transition: all .075s ease-out;
    }

    &.selected {
      color: rgba(255,255,255,1);

      &:after {
        opacity: 1;
        right: -20px;
      }

    }
  }
}

/*The steps to complete list*/

.steps {
  margin: 30px 0 50px 0;
  padding: 0 0 0 60px;

  h1 {
    font-weight: 500;
    font-size: 22px;
    margin: 0 0 6px 0;
    padding: 0;
    color: @primary-darkest;
  }

  time {
    margin: 0 0 10px 0;
    display: block;
    color: @text-medium;
    font-weight: 500;

    &:before {
      content:   "\f017";
      font-family: FontAwesome;
      margin-right: 6px;
      color: rgba(0,0,0,.25);
    }
  }

  > ol {
    padding: 0;
  }

  > li {
    list-style-type: none;
    position: relative;
    padding: 0 0 10px 0;
    margin: 0 0 40px 0;

    &:not(:last-child):after {
      content: "";
      position: absolute;
      bottom: -2px;
      height: 2px;
      background: @primary-light;
      width: 35%;
      left: ~"calc(22% + 50px)";
    }

    &:last-child {
      border: none;
      margin: 0;

      :last-child {
        margin: 0;
      }
    }

    &:before {
      position: absolute;
      left: -60px;
      top: -10px;
      font-weight: 400;
      font-size: 22px;
      color: @primary-darkest;
      border: solid 2px @primary-light;
      height: 43px;
      width: 43px;
      text-align: center;
      box-sizing: border-box;
      padding-top: 9px;
      border-radius: 0 50% 50% 50%;
    }

    // Creates fancy number elements for the Steps-to-Complete list
    .make-steps(@counter) when (@counter > 0) {
      .make-steps((@counter - 1));
      &:nth-child(@{counter}):before {
        content: ~"'"@counter~"'";
      }
    }
    .make-steps(10);
  }

  // Lists within the steps to complete list
  ul, ol {
    padding: 0;

    li {
      list-style-type: none;

      &:before {
        display: none;
      }

      h2 {
        font-size: 15px;
        color: @text-dark;
        font-style: normal;
        font-weight: 500;
        margin: 0;
      }
    }
  }

}

.glossary {
  -webkit-column-count: 2;
     -moz-column-count: 2;
          column-count: 2;
  -webkit-column-gap: 30px;
     -moz-column-gap: 30px;
          column-gap: 30px;

  margin: 0 0 40px 0;

  .term {
    -webkit-column-break-inside: avoid;
            column-break-inside: avoid;
    display: table; // Weird hack for Firefox

    h3 {
      font-weight: 500;
      font-size: @base-font-size;
      color: @text-dark;
      margin: 0;
    }

    p {
      margin-bottom: 20px;
      margin-left: 15px;
    }
  }

}

.resources {
  -webkit-column-count: 2;
     -moz-column-count: 2;
          column-count: 2;
  -webkit-column-gap: 30px;
     -moz-column-gap: 30px;
          column-gap: 30px;
  padding-bottom: 30px;

  .resource  {
    -webkit-column-break-inside: avoid;
    break-inside: avoid;
    padding-bottom: 25px;

    h4 {
      margin: 0;
      padding: 0;
      font-size: 15px;
      font-weight: 500;
      line-height: 17px;
    }

    p {
      margin: 10px 0 0 0;
    }
  }
}

// TODO: Print styles
@media print {}