:root {
  /* XXX: maybe use light-dark() once it's more widely supported */
  color-scheme: light dark;
  --highlight: rgb(255, 110, 0);
  --background: white;
  --text-color: black;
  --shadow: rgba(0,0,0,0.1);
  scrollbar-gutter: stable;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: black;
    --text-color: #f0f0f0;
    --shadow: rgba(255,255,255,0.2);
  }
}

body {
  font-family: Heebo, sans-serif;
  color: var(--text-color);
  background-color: var(--background);
  padding: 0 1em;
}

section {
  max-width: 50em;
  margin: auto;
}

h1, h2, h3, h4, h5, h6 {
  font-family: Signika, sans-serif;
}

h1 {
  font-size: 2em;
}

header > nav {
  margin: 1em;
  font-family: Signika, sans-serif;
}

a:visited,
a
{
  color: var(--highlight);
  text-decoration: none;
}

header a:visited,
header a
{
  color: var(--text-color);
}

header a {
  text-decoration: none;
}

header a:hover,
header span:hover
{
  color: var(--highlight);
}

header nav ul {
  padding: 0;
}

header > nav ul li {
  list-style-type: none;
}

header > nav > ul {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 60em;
  margin: auto;
}

header > nav > ul > li:first-child a {
  content: url('ngi-fediversity.svg');
  display: inline-block;
  height: 2em;
  margin-right: 4em;
}

header > nav > ul > li:last-child > a {
  border: 1pt solid var(--text-color);
  padding: 0.5em 1em 0.5em 1em;
  border-radius: 3pt;
  margin-left: 4em;
}

header > nav > ul > li:last-child:hover > a {
  color: var(--background);
  background-color: var(--highlight);
  border-color: var(--background);
}

header > nav > ul > li > span {
  position: relative;
  cursor: pointer;
  /* same as nav margin to bridge the gap for hovering */
  padding: 1em 0;
}

header > nav > ul > li > nav {
  display: none;
  position: absolute;
  margin-top: 1em;
  background: var(--background);
  min-width: max-content;
  padding: 0.5em;
  box-shadow: 0 0 1em var(--shadow);
  z-index: 1;
}

header > nav > ul > li > span:hover + nav,
header > nav > ul > li > nav:hover {
  display: block;
}

/* Optional: Style the dropdown items */
header > nav > ul > li > nav ul li {
  padding: 0.25em 0.5em;
}

/* Position the parent li relatively for absolute positioning context */
header > nav > ul > li {
  position: relative;
}