---
---

$link-color: #0099ff;
$border-color: #dedede;

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  color: #222;
  font-family: 'Open Sans',Arial,Helvetica,sans-serif;
  line-height: 2;
}

a {
  &:link, &:active {
    color: $link-color;
    text-decoration: none;
  }
  &:hover, &:visited {
    color: $link-color;
    text-decoration: underline;
  }
}

h1, h2, h3, h4, h5 {
  font-family: 'Zilla Slab','Open Sans',X-LocaleSpecific,sans-serif;
  font-weight: bold;
  color: #222;

  a:link, a:visited, a:hover, a:active {
    color: #222;
  }
}

.header-wide {
  border-bottom: 1px solid $border-color;
  position: fixed;
  width: 100%;
  background-color: white;

  h1 {
    padding: 0 1.5rem;
    float: left;
    line-height: 4rem;
  }

  ul {
    display: inline-block;
    float: right;
    padding: 0 1rem;
    li {
      display: inline-block;
      padding: 0 1rem;
      a {
        line-height: 4rem;
      }
    }
  }
}

.header-mobile {
  border-bottom: 1px solid $border-color;
  position: fixed;
  width: 100%;
  background-color: white;

  h1 {
    padding: 0 1.5rem;
    line-height: 4rem;
    text-align: center;
  }
}

aside {
  width: 15rem;
  position: fixed;
  top: 4rem;
  left: 0;
  bottom: 0;
  border-right: 1px solid $border-color;
  padding: 1rem 0;

  h1 {
    font-size: 1.2rem;
    line-height: 2.5;
    padding: 0 1.5rem;
  }

  ul {
    li {
      display: block;
      a {
        padding: .35rem 1.5rem .35rem 1.5rem;
        line-height: 2.5;
        display: block;
      }
    }

    .separator {
      height: 0;
      border-bottom: 1px solid $border-color;
    }
  }
}

.aside-wide {
  width: 15rem;
  position: fixed;
  top: 4rem;
  left: 0;
  bottom: 0;
}

.aside-mobile {
  width: 15rem;
  position: fixed;
  top: 0;
  bottom: 0;
  left: -16rem;
  bottom: 0;
  border-right: 1px solid $border-color;
  padding: 4rem 0;
  background-color: white;
  box-shadow: 0 0 1rem #aaa;
  transition-property: left;
  transition-duration: 0.3s;
}

main {
  padding: 4rem 4rem 4rem 20rem;
  margin: 0 auto;

  article {

    h1, h2, h3, h4, h5 {
      font-family: 'Zilla Slab','Open Sans',X-LocaleSpecific,sans-serif;
      font-weight: bold;
    }

    h1 {
      font-size: 3rem;
      line-height: 2;
    }

    h2 {
      border-top: 1px dotted #c1c5c8;
      font-size: 1.8;
      margin-top: 36px;
      padding-top: 36px;
      font-family: 'Zilla Slab','Open Sans',X-LocaleSpecific,sans-serif;
    }

    kbd {
      display: inline-block;
      padding: 3px 5px;
      line-height: 10px;
      color: #444d56;
      vertical-align: middle;
      background-color: #fafbfc;
      border: 1px solid #c6cbd1;
      border-bottom-color: rgb(198, 203, 209);
      border-bottom-color: #959da5;
      border-radius: 3px;
      box-shadow: inset 0 -1px 0 #959da5;
    }

    pre {
      padding: 16px;
      overflow: auto;
      line-height: 1.45;
      background-color: #f6f8fa;
      border-radius: 3px;
    }

    pre > code {
      background: none;
      padding: .2em 0;
    }

    code {
      padding: .2em .4em;
      margin: 0;
      background-color: rgba(27,31,35,.05);
      border-radius: 3px;
    }

    ul {
      li {
        padding: .25rem 0;
        margin-left: 1rem;
      }
    }

    p {
      margin-bottom: 1rem;
    }
  }
}

footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: lightgreen;
}

.open-menu-checkbox {
  display: inline-block;
  width: 32px;
  height: 32px;
  position: fixed;
  left: 16px;
  top: 16px;
  opacity: 0;
  z-index: 4;
  cursor: pointer;
}

.open-menu-bar-container {
  position: fixed;
  top: 16px;
  left: 16px;
  width: 32px;
  height: 32px;
  display: inline-block;
  z-index: 2;
}

.open-menu-bar {
  display: block;
  width: 32px;
  height: 4px;
  margin: 5px 0;
  background: #444;
  border-radius: 2px;
  transition-duration: 0.3s;

  &:nth-of-type(1) {
    transform-origin: 3px 50%;
  }

  &:nth-of-type(2) {
    transform-origin: 0% 100%;
  }

  &:nth-of-type(3) {
    transform-origin: 3px 50%;
  }
}

.open-menu-checkbox:checked ~ .aside-mobile {
  left: 0;
}

.open-menu-checkbox:checked ~ .open-menu-bar-container > .open-menu-bar {
  &:nth-of-type(1) {
    transform: rotate(45deg) translate(3px, -3px);
  }

  &:nth-of-type(2) {
    opacity: 0;
    transform: scale(0.2, 0.2);
  }

  &:nth-of-type(3) {
    transform: rotate(-45deg) translate(3px, 3px);
  }
}

// for PC
@media (min-width: 769px) {
  .header-mobile {
    display: none;
  }
  .aside-mobile {
    display: none;
  }
  .open-menu-checkbox, .open-menu-bar-container {
    display: none;
  }
}

// for mobile
@media (max-width: 768px) {
  .header-wide {
    display: none;
  }
  .aside-wide {
    display: none;
  }

  main {
    padding: 4rem 2rem 2rem 2rem;
  }
}