$content-padding: $spacing-unit / 2;
$post-margin-width: 2 * $spacing-unit;
$post-header-spacing: 3.5 * $spacing-unit;
$post-footer-spacing: 3 * $spacing-unit;

html {
  height: 100%;
  overflow-x: hidden;
}

body {
  min-height: 100%;
  width: 100%;
  overflow: hidden; // fixes margin-collapsing of body
}

.wrapper {
  width: 100%;
  max-width: $content-width;
  margin: 0 auto;
  padding-left: $content-padding;
  padding-right: $content-padding;
  @media screen and (min-width: $content-width) {
    padding-left: $content-padding + $post-margin-width;
    padding-right: $content-padding + $post-margin-width;
  }
}

article {

  $vspacing: $spacing-unit;
  $hspacing: $spacing-unit / 2;

  h1, h2, h3, h4, h5, h6, p, ul, ol, pre, hr, blockquote, img:only-child {
    display: block;
    margin: $vspacing auto;
  }

  li > ul, li > ol {
    margin-top: 0;
    margin-bottom: 0;
  }

  .task-list-item {
    list-style-type: none;
  }

  .task-list-item-checkbox {
    margin: 0 .5em .3em -1.6em;
    vertical-align: middle;
  }

  pre {
    position: relative;
    overflow: hidden;

    code {
      display: block;
      overflow-x: auto;
    }

    @include exdent-horizontally($hspacing, "code");
    @include exdent-vertically(0.5 * $vspacing, "code");

    @media screen and (min-width: $content-width) {
      @include exdent-horizontally(2 * $hspacing, "code");
    }
  }

  blockquote {
    margin-left: 0.5 * $spacing-unit;
    margin-right: 0.5 * $spacing-unit;
    @media screen and (min-width: $content-width) {
      margin-left: $spacing-unit;
      margin-right: $spacing-unit;
    }
    cite {
      display: block;
      text-align: right;
      margin-top: -$spacing-unit;
      white-space: nowrap;
    }
  }

  .aside, .sidenote, .side-note {
    width: 160px;
    float: left;
    margin-left: -$post-margin-width;
    margin-right: $vspacing;
    padding: 0;
  }

  @media screen and (max-width: $content-width) {
    h2, h3, h4, h5, h6 {
      &::before { color: rgba(0,0,0,0); }
    }
    .aside, .sidenote, .side-note {
      display: none;
    }
  }

  @media screen and (min-width: $content-width) {
    .hero-unit {
      margin-left: -$post-margin-width;
      margin-right: -$post-margin-width;
    }
  }

  h1, h2, h3, h4, h5, h6 { // reduce spacing after headings
    & + *,
    & + .aside + *,
    & + .sidenote + * { margin-top: -0.5 * $hspacing; }
  }

}

.post-header {
  margin-top: $post-header-spacing;
  margin-bottom: $post-header-spacing;
}

.post-cover {
  margin-top: -$post-header-spacing + $spacing-unit;
}

.post-footer, #disqus_thread {
  margin-top: $post-footer-spacing;
  margin-bottom: $post-footer-spacing;
}

.site-nav {
  display: flex;
  flex-flow: row wrap;
  align-items: top;
  justify-content: center;
  margin-left: -$post-margin-width;
  margin-right: -$post-margin-width;
}

@media screen and (min-width: $content-width) {
  .site-nav {
    height: 0;
    justify-content: flex-end;
  }
}

.page-link {
  display: block;
  padding: 0.5em;
}

.site-footer {
  padding-top: $spacing-unit;
  padding-bottom: $spacing-unit;
}

.site-footer .wrapper {
  display: flex;
  width: 100%;
  flex-flow: row-reverse wrap;
  justify-content: space-between;
  align-items: center;
}

.social-links {
  text-align: center;
  margin: 1em (-$content-padding);
  padding: 0 0.3em;
  white-space: nowrap;
}

.credits {
  margin-left: -0.256em;
  white-space: nowrap;
}

.post-list-item {
  position: relative;
  margin-top: $spacing-unit;
  margin-bottom: $spacing-unit;
}

.post-item-cover {
  width: 100vw;
  position: absolute;
  top: -.5 * $spacing-unit;
  bottom: -.5 * $spacing-unit;
  margin-left: 50%;
  transform: translateX(-50%);
  background-size: cover;
  background-position: center;
}

.post-item-label {
  position: relative;
}

.post-description {
  margin-top: 10px;
  margin-bottom: 10px;
}

.cover-meta {
  position: absolute;
  bottom: 0;
  right: 0;
  margin: 4px 8px;
  p { margin: 0; padding: 0; }
}