:root {
  --toggle-width: 1.55rem;
  --submenu-indent: 0.5rem;
}

ul.menu { list-style: none; margin: 0; padding: 0; }
ul.menu li { margin: 0; padding: 0.25rem 0; display: block; }
.menu a { text-decoration: none; display: inline-block; vertical-align: middle; }

.submenu-toggle {
  background: transparent;
  border: 0;
  padding: 0 0.5rem 0 0;
  cursor: pointer;
  vertical-align: middle;
  color: #fff;
  display: inline-flex;
  align-items: center;
}

.submenu-toggle:after {
  content: '';
  display: inline-block;
  width: 10px;
  height: 10px;
  border-right: 3px solid currentColor;
  border-bottom: 3px solid currentColor;
  transform: rotate(-45deg);
  margin-left: 0.25rem;
  transition: transform 0.2s;
}

.submenu-toggle[aria-expanded="true"]:after {
  transform: rotate(45deg);
}

.submenu { list-style: none; margin: 0.25rem 0 0 1rem; padding: 0; display: none; }
.submenu.open { display: block; }
.collapse-btn { display: inline-block; margin-top: 0.5rem; cursor: pointer; }

ul.menu li {
  margin: 0;
  padding: 0.125rem 0;
}

.submenu {
  margin: 0 0 0 var(--submenu-indent);
  padding: 0;
}

ul.menu li, ul.submenu li {
  margin: 0;
  padding: 0;
  line-height: 1;
}
.submenu {
  display: none;
  margin: 0;
  padding: 0;
}
.submenu.open {
  display: block;
}

.depth-1 .nosub {
  margin-left: var(--toggle-width); 
}

.depth-2 .submenu-toggle {
  margin-left: var(--submenu-indent); 
}

.depth-2 .nosub {
  margin-left: calc(var(--submenu-indent) + var(--toggle-width));
}

.depth-3 .submenu-toggle {
  margin-left: calc(2 * var(--submenu-indent)); 
}

.depth-3 .nosub {
  margin-left: calc(2 * var(--submenu-indent) + var(--toggle-width));
}

.depth-4 .submenu-toggle {
  margin-left: calc(3 * var(--submenu-indent)); 
}
.depth-4 .nosub {
  margin-left: calc(3 * var(--submenu-indent) + var(--toggle-width));
}

ul.menu, ul.menu li, ul.menu li a, ul.submenu, ul.submenu li, ul.submenu li a {
  background-color: #786E64;
}

ul.menu li.active > a,
ul.submenu li.active > a {
  background-color: #be1e3c;
  text-decoration: none;
}

ul.menu li.active,
ul.submenu li.active {
  background-color: #be1e3c;
}