/* Reset-ish */
* {
  box-sizing: border-box;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  padding: 0;
  background: var(--hu-flag-red);
}

nav a {
  text-decoration: none;
  color: white;
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.brand {
  font-size: 1.5em;
  padding: 0.5em;
  color: white;
}

.selected {
  background: var(--hu-flag-green);
}

.content {
  display: none;
}

.content:target {
  display: inline;
}

#nav-toggle {
  display: none;
}

.hamburger {
  display: none;
  font-size: 2em;
  color: white;
  margin-right: 0.5em;
  cursor: pointer;
}

.nav-menu {
  display: flex;
}

.nav-menu > li {
  position: relative;
  margin: 0;
  padding: 1.5em;
}

.nav-menu > li:hover {
  background: var(--hu-flag-green);
}

.submenu {
  display: none;
}

.sub {
  background: var(--hu-flag-green);
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 180px;
  padding: 1em;
}

.sub > li:not(:last-child) {
  padding-bottom: 1em;
}

.subsub > li:first-child {
  padding-top: 1em;
}

.subsub > li:not(:last-child) {
  padding-bottom: 1em;
}

.subsub a {
  color: tomato;
}

.has-submenu > span {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.has-submenu > span b {
  color: white;
  font-weight: bold;
}

.nav-menu > .has-submenu > span b {
  display: none;
}

.has-submenu:hover > .submenu {
  display: block;
}

@media (max-width: 900px) {
  .hamburger {
    display: block;
  }
  
  .nav-menu {
    display: none;
    flex-direction: column;
    position: absolute;
    background: var(--hu-flag-red);
    padding: 0;
    right: 0;
    top: 100%;
    min-width: 250px;
  }
  
  .nav-menu > li:not(:last-child) {
    border-bottom: 2px solid gray;
  }

  .submenu {
    display: none;
  }
  
  .sub {
    position: relative;
    padding: 0;
  }

  .sub > li {
    padding-top: 1em;
  }
  
  .sub > li:not(:last-child) {
    border-bottom: 2px solid tomato;
  }

  .subsub {
    background: var(--hu-flag-green);
  }

  .subsub a { 
    padding: 1em;
    color: tomato;
  }

  #nav-toggle:checked ~ .nav-menu {
    display: flex;
  }

  .submenu.is-open {
    display: block;
  }

  .nav-menu > .has-submenu > span b {
    display: inline;
  }
}