/* Navigation Menu Styles */
#navigation-menu {
  position: sticky;
  top: 0;
  z-index: 50;
}

/* Mobile menu overlay */
#overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.3);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

#overlay.visible {
  opacity: 1;
  visibility: visible;
}