.nav {
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
}

.nav__header {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

.nav__logo {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
}

.nav__logo-link {
  color: var(--color-text);
  text-decoration: none;
}

.nav__menu {
  flex: 1;
  padding: var(--spacing-sm);
  overflow-y: auto;
  /* Add class="custom-scrollbar" in markup to apply scrollbar utility */
}

.nav__section {
  margin-bottom: var(--spacing-md);
}

.nav__section-header {
  padding: var(--spacing-xs) var(--spacing-md);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav__item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-text-muted);
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.2s ease;
  margin: 2px 0;
}

.nav__item:hover {
  background: var(--color-surface-raised);
  color: var(--color-text);
  transform: translateX(2px);
}

.nav__item--active {
  background: var(--color-surface-elevated);
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
}

.nav__icon {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  stroke-width: 1.5;
  fill: none;
  transition: transform 0.2s ease;
}

.nav__item:hover .nav__icon {
  transform: scale(1.1);
}

.nav__footer {
  padding: var(--spacing-sm);
  border-top: 1px solid var(--color-border);
}

.nav__user {
  padding: var(--spacing-xs);
}

.nav__user-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-text);
  text-decoration: none;
  padding: var(--spacing-xs);
  border-radius: var(--radius-md);
  transition: background-color 0.2s;
}

.nav__user-link:hover {
  background: var(--color-surface-raised);
}

.nav__user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--color-surface-raised);
}

.nav__user-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.nav__user-info {
  min-width: 0;
}

.nav__user-name {
  font-weight: var(--font-medium);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav__user-email {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Navigation sections */
.nav__section {
  margin-bottom: var(--spacing-md);
}

.nav__section--primary {
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
}

.nav__section--secondary {
  margin-top: var(--spacing-md);
}

/* Enhanced user menu */
.nav__user-menu {
  position: relative;
}

.nav__user-trigger {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  width: 100%;
  background: transparent;
  border: none;
  padding: var(--spacing-xs);
  border-radius: var(--radius-md);
  color: var(--color-text);
  cursor: pointer;
  transition: background-color 0.2s;
}

.nav__user-trigger:hover {
  background: var(--color-surface-raised);
}

.nav__user-trigger:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.nav__user-chevron {
  width: 16px;
  height: 16px;
  margin-left: auto;
  transition: transform 0.2s;
}

.nav__user-trigger[aria-expanded="true"] .nav__user-chevron {
  transform: rotate(180deg);
}

/* User dropdown menu */
.nav__user-dropdown {
  position: absolute;
  bottom: 100%;
  left: 0;
  right: 0;
  margin-bottom: var(--spacing-xs);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

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

.nav__user-dropdown-header {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

.nav__user-dropdown-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.nav__user-dropdown-email {
  font-size: var(--text-sm);
  color: var(--color-text);
  font-weight: var(--font-medium);
}

.nav__user-dropdown-account {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.nav__user-dropdown-menu {
  padding: var(--spacing-xs);
}

.nav__user-dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-text);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: background-color 0.2s;
}

.nav__user-dropdown-item:hover,
.nav__user-dropdown-item:focus {
  background: var(--color-surface-raised);
}

.nav__user-dropdown-item--danger {
  color: var(--color-danger);
}

.nav__user-dropdown-item--danger:hover {
  background: var(--color-danger-light);
}

.nav__user-dropdown-icon {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  stroke-width: 1.5;
  fill: none;
}

.nav__user-dropdown-divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--spacing-xs) 0;
}

/* Theme toggle mobile only */
.nav__theme-toggle--mobile-only {
  display: none;
}

/* Responsive adjustments */
@media (max-width: var(--breakpoint-mobile)) {
  .nav {
    display: none;
  }
  
  .nav__theme-toggle--mobile-only {
    display: flex;
  }
  
  /* Adjust user dropdown for mobile */
  .nav__user-dropdown {
    position: absolute;
    bottom: auto;
    top: 100%;
    left: var(--spacing-md);
    right: var(--spacing-md);
    margin-bottom: 0;
    margin-top: var(--spacing-xs);
  }
}