.dark-theme {
  background-color: #333;
  color: #fff;
}
.dark-theme .sidebar-link,
.dark-theme .submenu-link,
.dark-theme .sidebar-link span,
.dark-theme .submenu-link span {
  color: #fff;
}
.dark-theme .sidebar-link:hover,
.dark-theme .submenu-link:hover {
  background-color: #666;
}
.dark-theme .sidebar-link:hover span,
.dark-theme .submenu-link:hover span {
  color: #000;
}