/* Navigation Styles */
header {
  position: sticky;
  top: 0;
  background: var(--color-white);
  z-index: 1000;
  border-bottom: 1px solid var(--color-gray);
  transition: var(--transition);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  max-width: 1400px;
  margin: 0 auto;
}

.logo {
  font-family: var(--font-primary);
  font-size: 1.5rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
  align-items: center;
}

.nav-item {
  position: relative;
}

.nav-link {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: var(--spacing-xs) 0;
  display: block;
  transition: var(--transition);
}

.nav-link:hover {
  opacity: 0.7;
}

/* Dropdown Menu */
.dropdown {
  position: relative;
}

.dropdown-toggle::after {
  content: '▼';
  font-size: 0.6rem;
  margin-left: 0.5rem;
  display: inline-block;
  transition: var(--transition);
}

.dropdown:hover .dropdown-toggle::after {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-white);
  min-width: 200px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--transition);
  list-style: none;
  padding: var(--spacing-sm) 0;
  margin-top: var(--spacing-xs);
}

.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  padding: var(--spacing-xs) var(--spacing-sm);
}

.dropdown-link {
  font-size: 0.875rem;
  text-transform: capitalize;
  transition: var(--transition);
}

.dropdown-link:hover {
  padding-left: var(--spacing-sm);
}

/* Nested Dropdown (Tables) */
.dropdown-menu .dropdown {
  position: relative;
}

.dropdown-menu .dropdown-menu {
  left: 100%;
  top: 0;
  margin-left: var(--spacing-xs);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  flex-direction: column;
  gap: 4px;
}

.mobile-menu-toggle span {
  width: 25px;
  height: 2px;
  background: var(--color-primary);
  transition: var(--transition);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Mobile Menu */
@media (max-width: 968px) {
  .mobile-menu-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 60px;
    left: 0;
    width: 100%;
    background: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-md);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transform: translateX(-100%);
    transition: var(--transition);
    align-items: flex-start;
    max-height: calc(100vh - 60px);
    overflow-y: auto;
  }

  .nav-menu.active {
    transform: translateX(0);
  }

  .nav-item {
    width: 100%;
    border-bottom: 1px solid var(--color-gray);
    padding: var(--spacing-sm) 0;
  }

  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    padding-left: var(--spacing-md);
    margin-top: var(--spacing-xs);
    display: none;
  }

  .dropdown.active .dropdown-menu {
    display: block;
  }

  .dropdown-toggle::after {
    float: right;
  }
}