:root { /* default theme (light) */
  --fg: #333;
  --bg: #f4f0f0;
  --subtitle: #777;
  --pre-fg: #111;
  --pre-bg: #eaeaea;
  --border1: #ccc;
  --code-bg: #e8e8e8;
  --border2: #999;
  --a-fg: #B34A00;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #cbb;
    --bg: #211e1f;
    --subtitle: #888;
    --pre-fg: #eaeaea;
    --pre-bg: #262327;
    --border1: #444;
    --code-bg: #222;
    --border2: #555;
    --a-fg: #FF9447;
  }
}

body {
  margin: auto;
  max-width: 820px;
  line-height: 1.6;
  font-family: "Trebutchet MS", Sans-Serif;
  padding: 0 10px;
  font-size: 18px;
  color: var(--fg);
  background: var(--bg);
}

p {
  text-align: justify;
}

nav.navbar {
  padding-top: 10px;
}

nav.navbar > a {
  padding: 1px 20px;
  background: var(--pre-bg);
  border: 1px solid var(--border1);
  border-radius: 6px;
}

h1.title {
  line-height: 1.2;
  font-size: 1.6em;
}

h1 {
  line-height: 1;
  font-size: 1.2em;
}

h2 {
  line-height: 1;
  font-size: 1.2em;
}

p.subtitle {
  font-size: 16px;
  color: var(--subtitle);
}

pre {
  padding: 8px 8px 8px 8px;
  border-radius: 3px;
  border: 1px solid var(--border1);
  font-size: 14px;
  font-family: Courier, Monospace;
  overflow-x: auto;
  background: var(--pre-bg);
  color: var(--pre-fg);
}

pre > code {
  background: var(--pre-bg);
  font-size: 14px;
  border: none;
  padding: 0px;
}

code  {
  background: var(--code-bg);
  border: 1px solid var(--border1);
  font-size: 14px;
  border-radius: 3px;
  padding: 2px 2px;
}

a {
  color: var(--a-fg);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
  text-decoration-style: dotted;
}
/*external links*/
a.external_link::after {
    content: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAIpJREFUeNqEkIEJwCAMBGPpEs7hHK6hY+gauoZr6Bo6RtqEWkxb6EMQnuM/USEirIoxSmOKwDkhBEwp4VPkb4801Xun9xW4e+9FldYarLUvkBPPOp4JGWOgtSaSt6VWQKUU9nPOEiSIgAmNMdadFTjn7utqrXwh6fLvH9nXhamW5ksMnpfDnw4BBgBfunO056MmqAAAAABJRU5ErkJggg==);

}

td,th {
  vertical-align:top;
  padding: 5px 5px 5px;
  text-align:center;
  border: solid 1px var(--border2);
}

span.date {
  font-size: 80%;
  
}

table { 
  border: solid 1px var(--border1);
  background: var(--code-bg);
  font-size: 15px;
}

p > img {
  width: 90%;
  display: block;
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}