:root {
  --black: #080808;
}

html {
  font-family: sans-serif;
  color: var(--black);
}

body {
  max-width: 920px;
  margin: 0 auto;
  padding: 1rem;
}

h1 {
  margin-top: 0;
  font-size: 1.5rem;

  small {
    display: block;
    font-size: 1rem;
  }
}

.index {
  display: flex;
  flex-direction: row;

  .article-list {
    flex-grow: 1;
    padding: 0 1rem;

    .article {
      margin-bottom: 1rem;
    }

    .date {
      display: block;
      color: #333;
    }
  }

  aside {
    width: 40%;

    .avatar {
      display: block;
      margin: 0 auto 1rem;
      border-radius: 5px;
    }

    dt {
      font-size: 0.9rem;
    }

    dd {
      margin-left: 0;

      &:not(:last-child) {
        margin-bottom: 0.5rem;
      }
    }
  }
}

@media(max-width: 640px) {
  .index {
    display: block;

    aside {
      width: 100%;
    }
  }
}

article {
  margin: 0 auto;
  max-width: 720px;
  line-height: 1.3;

  img, video, iframe {
    /* !important for asciinema frames */
    display: block !important;
    margin: 1rem auto !important;
    max-width: 90%;

    @media(max-width: 640px) {
      max-width: calc(100% - 2rem);
    }
  }

  sup {
    line-height: 1;
  }

  .comment {
    margin: 2rem auto 0;
    max-width: 80%;
    color: #333;
  }
}

.footnotes {
  font-size: 0.85rem;
}

footer {
  margin-top: 2rem;
  text-align: center;
  font-size: 0.8rem;
  color: #333;
}

.float-img {
  float: right;
  display: inline;
  padding-left: 1rem;

  @media(max-width: 640px) {
    display: block;
    float: none;
    padding-left: inherit;
  }
}

pre {
  background-color: #ddd;
  padding: 0.25rem 1rem;
  margin: 0 -1rem;
  max-width: 100%;
  overflow-x: auto;

  .include {
    color: #800;
  }

  .keyword, .repeat, .type_qualifier, .keyword_function {
    color: #008;
  }

  .type, .type, .type {
    color: #44F;
  }

  .string {
    color: #484;
    font-style: italic;
  }

  .comment {
    color: #333;
    font-style: italic;
  }

  .gi {
    color: green;
  }

  .gd {
    color: red;
  }

  .gu {
    color: blue;
  }

  .variable {
    color: black;
  }

  .function_builtin {
    color: #008;
  }
}

.webring {
  margin-top: 2rem;

  h2 {
    font-size: 1.2rem;
  }

  .articles {
    display: flex;

    @media(max-width: 640px) {
      flex-direction: column;
    }
  }

  .title {
    margin: 0;
  }

  .article {
    flex: 1 1 0;
    display: flex;
    flex-direction: column;
    background: #eee;
    padding: 0.5rem;

    margin: 0 0.5rem;

    @media(max-width: 640px) {
      margin: 0.5rem 0;
    }
  }

  .article:first-child {
    margin-left: 0;
  }

  .article:last-child {
    margin-right: 0;
  }

  .summary {
    font-size: 0.8rem;
    flex: 1 1 0;
  }

  .attribution {
    float: right;
    font-size: 0.8rem;
    color: #555;
    line-height: 3;
  }

  .date {
    color: var(--black);
  }
}

summary {
  cursor: pointer;
  background-color: #eee;
  padding: 0.25rem 1rem;
  margin: 0 -1rem;
}

details[open] {
  border-bottom: 1rem solid #eee;
  margin: 0 -1rem 1rem;
  padding: 0 1rem;
}

.text-center {
  text-align: center;
}

blockquote {
  border-left: 5px solid #777;
  background-color: #ddd;
  padding: 0 1rem;
  margin-top: 1rem;
  margin-bottom: 1rem;
  margin-left: calc(-1rem - 5px);
  margin-right: -1rem;

  blockquote {
    margin-right: 0;
    margin-left: 0;
  }
}

dl {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-gap: 0.2rem 1rem;

  dt {
    font-weight: bold;
    grid-column-start: 1;
  }

  dd {
    grid-column-start: 2;
    margin: 0;
  }
}

.alert {
  padding: 0.5rem;
  border: 1px solid transparent;
  margin-bottom: 1rem;

  &.alert-danger {
    background: #f8d7da;
    color: #721c24;
    border-color: #f5c6cb;
  }

  &.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border-color: #bee5eb;
  }
}

table {
	color: #333;
	background: white;
	border: 1px solid grey;
	font-size: 12pt;
	border-collapse: collapse;
	margin-bottom: 1rem;
}
table thead th,
table tfoot th {
	background: rgba(0,0,0,.1);
}
table caption {
	padding:.5em;
}
table th,
table td {
	padding: .5em;
	border: 1px solid lightgrey;
}
td.red {
	background: #F8D7DA;
}
td.yellow {
	background: #FFF3CD;
}
td.blue {
	background: #CFE2FF;
}

hr {
	border: 1px dashed #888;
	margin: 0 25%;
}

.next-prev {
  display: grid;
  grid-template-columns: 50% 50%;
  margin: 2rem auto;

  .prev {
    grid-column: 1;
  }

  .next {
    grid-column: 2;
    text-align: right;
  }
}

p img {
  display: block;
  margin: 0 auto;
}

figure {
  img {
    display: block;
    margin: 0 auto;
    box-shadow: 0 0 2px 2px #888;
  }

  figcaption {
    text-align: center;
    font-size: 0.8rem;
  }
}

.superscript {
  vertical-align: top;
  font-size: 0.75rem;
}