* {
  border: 0;
  font: inherit;
  font-size: 100%;
  vertical-align: baseline;
  line-height: 1.5em;
  margin: 0;
  padding: 0;
  background-color: #f8f8f8;
  color: #222;
}

body {
  font-family: Charter, 'Bitstream Charter', 'Sitka Text', Cambria, serif; 
  font-size: 16px;
  font-style: normal;
}

cols {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 20em 1fr;

  sidebar {
    display: block;
    margin-left: 2em;
    margin-right: 4em;
  }

  content {
    display: block;
    margin-right: 4em;
  }
}

single {
  display: block;
  max-width: 1000px;
  margin: 0 auto;
}

h1, h2, h3, h4 {
  font-weight: bold;
}

h1 {
  font-size: 1.8em;
  margin-bottom: 0.5em;
}

h2 {
  font-size: 1.33em;
  margin-bottom: 0.5em;
}

h3 {
  font-size: 1.25em;
  margin-bottom: 0.5em;
}

p {
  margin-bottom: 1em;
}

ul {
  margin-bottom: 1em;
  padding-left: 1.25rem;
}

strong {
  font-weight: bold;
}

header {
  display: block;
  height: 3em;
  /* position: fixed; */
  top: 0;
  left: 0;
  right: 0;
  cols {
    margin-top: 1em;
  }
  border-bottom: 1px solid #ccc;

  #sidebar-menu-button {
    display: none;
  }

  sidebar {
    a {
      display: grid;
      grid-template-columns: auto 1fr;
      text-decoration: none;
      img {
        height: 2em;
        margin-right: 1em;
      }
    }
  }

  top {
    max-width: 900px;
    margin-right: 4em;

    display: grid;
    grid-template-columns: 1fr auto;
    links {
      a {
        text-decoration: none;
      }

      span {
        display: inline-block;
        margin-right: 1em;
        font-weight: bold;

        a:hover { color: #225486 }
      }

      img {
        height: 1.7em;
        align-self: end;
      }
    }
  }
}

main {
  margin-top: 1em;
  display: block;

  #sidebar-toggle {
    display: none;
  }

  sidebar {
    margin-top: 1em;
    
    h2 {
      &:not(:first-child) {
        border-top: 1px solid #ddd;
      }
      padding-top: 0.5em;
      font-size: 1.1em;
    }

    p {
      margin-bottom: 0.5em;

      a {
        text-decoration: none;
        font-weight: bold;
        color: #666;

        &.current, &:hover {
          color: #36a;
        }
      }
    }
  }

  article {
    display: block;
    max-width: 900px;

    headings {
      margin-top: 2em;
      h2 {
        font-size: 1em;
      }
    }

    content {
      margin-bottom: 3em;

      a {
        font-weight: bold;
        text-decoration: none;
        color: #158;

        &:hover {
          text-decoration: underline;
        }
      }

      nav {
        margin-top: 2em;
        border-top: 1px solid #ccc;
        padding-top: 1em;
        display: grid;
        grid-template-columns: 1fr 1fr;
        column-gap: 1em;

        p, h2 { margin: 0 }
        h2 { font-size: 1.1em }

        a {
          display: inline-block;
          border: 1px solid #ccc;
          border-radius: 4px;
          padding: 0.5em;
          text-decoration: none;

          &:nth-child(2) {
            text-align: right;
          }

          &:hover {
            border: 1px solid #9ab;
            color: #158;

            * { color: inherit }
          }
        }
      }
    }
  }
}

main {
  single {
    hero {
      display: block;
      margin-top: 6em;
      text-align: center;

      logo {
        display: block;

        img {
          height: 4em;
        }
      }

      h1 {
        font-size: 4em;
        margin-bottom: 0;
      }

      h2 {
        font-size: 2em;
      }

      snippet {
        display: block;
        margin: 1em auto;
        font-size: 1.5em;
        width: 20em;

        & div.highlight {
          border-radius: 4px;
        }
      }

      links {
        display: flex;
        column-gap: 2em;
        justify-content: center;
        
        a {
          display: inline-block;
          text-decoration: none;
          padding: 0.75em 2em;
          background-color: #26a;
          border-radius: 2em;
          font-weight: bold;
          color: #eee;

          &:hover {
            background-color: #26a;
          }
        }
      }
    }

    hr {
      display: block;
      margin: 2em 0;
      border-width: 0;
      text-align: center;
    }

    hr::after {
      content: "················";
    }
    features {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      max-width: 800px;
      margin: 0 auto 3em;
      column-gap: 2em;
      row-gap: 2em;
      
      a {
        display: inline-block;
        background-color: #bef;
        padding: 1em;
        border-radius: 6px;
        width: 11em;
        flex-shrink: 0;

        text-decoration: none;
        
        &:hover {
          background-color: #cef;
        }


        * { background-color: inherit; }

        h4 {
          margin-bottom: 0.3em;
        }

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

@media (max-width: 768px) {
  header {
    height: auto;

    cols {
      grid-template-columns: 1fr auto;
      margin: 1em 1em 0.5em 1em;
      }
    sidebar {
      margin: 0;
      h2 {
        margin: 0;
      }
    }
    top {
      display: block;
      margin: 0;

      h3 {
        display: none;
      }

      links {
        /* width: 8em; */
      }

      #sidebar-menu-button {
        margin-left: 1em;
        display: inline-block;
        cursor: pointer;

        img { display: inline }
      }
    }
  }

  main {
    margin-top: 0;
    position: relative;

    cols {
      display: block;
      sidebar {
        display: none;
      }
    }

    &:has(#sidebar-toggle:checked) {
      cols {
        sidebar {
          display: block;
          position: absolute;
          margin: 0;
          padding: 1em;
          border-right: 1px solid #ccc;
          top: 0;
          bottom: 0;
          left: 0;
          z-index: 1000;
          overflow-y: scroll;
          background-color: #f8fcff;

          * {
            background-color: inherit;
          }
        }
      }
    }

    article {
      margin-inline: 1em;
      padding-top: 1em;

      content {
        margin-inline: 0;

        nav {
          font-size: 0.8em;
        }
      }
    }

    single {
      hero {
        snippet {
          font-size: 1em;
        }

        links {
          column-gap: 1em;
          a {
            padding-inline: 1em;
          }
        }
      }
    }
  }
}


/* code snippet styling */


pre,
code {
  font-family: ui-monospace, 'Cascadia Code', 'Source Code Pro', Menlo, Consolas, 'DejaVu Sans Mono', monospace; 
  font-size: 0.95em;
}

div.highlight {
  margin-bottom: 1em;
  padding: 1em;

  pre {
    padding: 0;
    overflow-x: scroll;
    scrollbar-width: none;
    text-align: left;
  }

  pre * {
    line-height: 1em;
  }

  pre + p {
    margin-top: 1em;
  }

  pre code {
    /* margin: 10px; */
    word-wrap: no;
  }

  &, * {
    background: #f0f0f0;
  }
  .hll {
    background-color: #ffffcc;
  }
  .c {
    color: #408080;
    font-style: italic;
  } /* Comment */
  .err {
    border: 1px solid #ff0000;
  } /* Error */
  .k {
    color: #008000;
    font-weight: bold;
  } /* Keyword */
  .o {
    color: #666666;
  } /* Operator */
  .ch {
    color: #408080;
    font-style: italic;
  } /* Comment.Hashbang */
  .cm {
    color: #408080;
    font-style: italic;
  } /* Comment.Multiline */
  .cp {
    color: #bc7a00;
  } /* Comment.Preproc */
  .cpf {
    color: #408080;
    font-style: italic;
  } /* Comment.PreprocFile */
  .c1 {
    color: #408080;
    font-style: italic;
  } /* Comment.Single */
  .cs {
    color: #408080;
    font-style: italic;
  } /* Comment.Special */
  .gd {
    color: #a00000;
  } /* Generic.Deleted */
  .ge {
    font-style: italic;
  } /* Generic.Emph */
  .gr {
    color: #ff0000;
  } /* Generic.Error */
  .gh {
    color: #000080;
    font-weight: bold;
  } /* Generic.Heading */
  .gi {
    color: #00a000;
  } /* Generic.Inserted */
  .go {
    color: #888888;
  } /* Generic.Output */
  .gp {
    color: #000080;
    font-weight: bold;
  } /* Generic.Prompt */
  .gs {
    font-weight: bold;
  } /* Generic.Strong */
  .gu {
    color: #800080;
    font-weight: bold;
  } /* Generic.Subheading */
  .gt {
    color: #0044dd;
  } /* Generic.Traceback */
  .kc {
    color: #008000;
    font-weight: bold;
  } /* Keyword.Constant */
  .kd {
    color: #008000;
    font-weight: bold;
  } /* Keyword.Declaration */
  .kn {
    color: #008000;
    font-weight: bold;
  } /* Keyword.Namespace */
  .kp {
    color: #008000;
  } /* Keyword.Pseudo */
  .kr {
    color: #008000;
    font-weight: bold;
  } /* Keyword.Reserved */
  .kt {
    color: #b00040;
  } /* Keyword.Type */
  .m {
    color: #666666;
  } /* Literal.Number */
  .s {
    color: #ba2121;
  } /* Literal.String */
  .na {
    color: #7d9029;
  } /* Name.Attribute */
  .nb {
    color: #008000;
  } /* Name.Builtin */
  .nc {
    color: #0000ff;
    font-weight: bold;
  } /* Name.Class */
  .no {
    color: #880000;
  } /* Name.Constant */
  .nd {
    color: #aa22ff;
  } /* Name.Decorator */
  .ni {
    color: #999999;
    font-weight: bold;
  } /* Name.Entity */
  .ne {
    color: #d2413a;
    font-weight: bold;
  } /* Name.Exception */
  .nf {
    color: #0000ff;
  } /* Name.Function */
  .nl {
    color: #a0a000;
  } /* Name.Label */
  .nn {
    color: #0000ff;
    font-weight: bold;
  } /* Name.Namespace */
  .nt {
    color: #008000;
    font-weight: bold;
  } /* Name.Tag */
  .nv {
    color: #19177c;
  } /* Name.Variable */
  .ow {
    color: #aa22ff;
    font-weight: bold;
  } /* Operator.Word */
  .w {
    color: #bbbbbb;
  } /* Text.Whitespace */
  .mb {
    color: #666666;
  } /* Literal.Number.Bin */
  .mf {
    color: #666666;
  } /* Literal.Number.Float */
  .mh {
    color: #666666;
  } /* Literal.Number.Hex */
  .mi {
    color: #666666;
  } /* Literal.Number.Integer */
  .mo {
    color: #666666;
  } /* Literal.Number.Oct */
  .sa {
    color: #ba2121;
  } /* Literal.String.Affix */
  .sb {
    color: #ba2121;
  } /* Literal.String.Backtick */
  .sc {
    color: #ba2121;
  } /* Literal.String.Char */
  .dl {
    color: #ba2121;
  } /* Literal.String.Delimiter */
  .sd {
    color: #ba2121;
    font-style: italic;
  } /* Literal.String.Doc */
  .s2 {
    color: #ba2121;
  } /* Literal.String.Double */
  .se {
    color: #bb6622;
    font-weight: bold;
  } /* Literal.String.Escape */
  .sh {
    color: #ba2121;
  } /* Literal.String.Heredoc */
  .si {
    color: #bb6688;
    font-weight: bold;
  } /* Literal.String.Interpol */
  .sx {
    color: #008000;
  } /* Literal.String.Other */
  .sr {
    color: #bb6688;
  } /* Literal.String.Regex */
  .s1 {
    color: #ba2121;
  } /* Literal.String.Single */
  .ss {
    color: #19177c;
  } /* Literal.String.Symbol */
  .bp {
    color: #008000;
  } /* Name.Builtin.Pseudo */
  .fm {
    color: #0000ff;
  } /* Name.Function.Magic */
  .vc {
    color: #19177c;
  } /* Name.Variable.Class */
  .vg {
    color: #19177c;
  } /* Name.Variable.Global */
  .vi {
    color: #19177c;
  } /* Name.Variable.Instance */
  .vm {
    color: #19177c;
  } /* Name.Variable.Magic */
  .il {
    color: #666666;
  } /* Literal.Number.Integer.Long */
}