header {
  position: sticky;
  top: 0;
  z-index: 2000;
}
.navbar {
  background-color: var(--color-surface-dark);
}
  
.navbar-list {
  list-style: none;
  margin: 0;
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  min-height: var(--navbar-height);
}
  
.navbar-list li {
  position: relative;
}
 
.navbar-list a {
  display: flex;
  align-items: center;
  height: var(--navbar-height);
  padding: 0 var(--space-sm);
  color: var(--color-footer-text);
  text-decoration: none;
}
 
.navbar-list a:hover {
  background-color: var(--color-surface-dark-hover);
}

.navbar-logo a {
  width: var(--navbar-height);
  height: var(--navbar-height);
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
  
.navbar-logo img {
  width: var(--logo-size);
  height: var(--logo-size);
  display: block;
  transition: transform var(--transition-standard);
  transform-origin: center;
}
  
.navbar-logo:hover img {
  transform: rotate(90deg);
}
  
.dropbtn {
  background: none;
  color: var(--color-footer-text);
  border: none;
  font: inherit;
  cursor: pointer;
}
  
.dropdown-content {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: var(--dropdown-min-width);
  background-color: var(--color-dropdown-bg);
  box-shadow: var(--shadow-dropdown);
  z-index: 1000;
}

.dropdown-content a {
  display: block;
  height: auto;
  color: var(--color-dropdown-text);
  padding: 0.75rem 1rem;
  text-decoration: none;
}
  
.dropdown-content a:hover {
  background-color: var(--color-dropdown-hover);
}
  
.dropdown:hover .dropdown-content {
  display: block;
}