.nav {
  display: none;
  list-style: none;
  gap: var(--xpress-spacing-md);
}

.nav.active {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--xpress-white);
  padding: var(--xpress-spacing-lg);
  box-shadow: var(--xpress-shadow-md);
  border-radius: 0 0 var(--xpress-border-radius) var(--xpress-border-radius);
  animation: slideDown 0.4s ease forwards;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.nav li a {
  font-size: 1.1rem;
  padding: var(--xpress-spacing-sm) var(--xpress-spacing-md);
  display: block;
  border-radius: var(--xpress-border-radius);
  position: relative;
  transition: var(--xpress-transition);
}

.nav li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--xpress-orange);
  transition: var(--xpress-transition);
  transform: translateX(-50%);
}

.nav li a:hover::after {
  width: 80%;
}

.nav li a:hover {
  background-color: var(--xpress-gray-light);
  transform: translateY(-2px);
}

.hamburger {
  display: none;
  background: none;
  border: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: var(--xpress-blue-dark);
  transition: var(--xpress-transition);
  padding: var(--xpress-spacing-sm);
  border-radius: var(--xpress-border-radius);
}

.hamburger:hover {
  background-color: var(--xpress-gray-light);
  transform: rotate(90deg);
}

@media (max-width: 768px) {
  .hamburger {
    display: block;
  }
}

@media (min-width: 769px) {
  .nav {
    display: flex;
    flex-direction: row;
    position: static;
    background: none;
    box-shadow: none;
  }
  
  .nav li a {
    padding: var(--xpress-spacing-sm) var(--xpress-spacing-md);
  }
}