/**
 * Navigation Component Styles
 * 
 * Main site navigation menu.
 * Uses CSS variables for colors - no hardcoded values.
 */

.nav {
  display: flex;
  align-items: center;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__item {
  margin: 0;
}

.nav__link {
  display: block;
  padding: var(--spacing-sm) 0;
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-base);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent-primary);
  transition: width var(--transition-base);
}

.nav__link:hover,
.nav__link:focus {
  color: var(--color-text-primary);
  outline: none;
}

.nav__link:focus-visible {
  outline: 2px solid var(--color-accent-primary);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

.nav__link:hover::after,
.nav__link:focus::after,
.nav__link[aria-current="page"]::after {
  width: 100%;
}

.nav__link[aria-current="page"] {
  color: var(--color-text-primary);
}

/* Logout form: button styled as nav link */
.nav__logout-form {
  display: inline;
  margin: 0;
  padding: 0;
}

.nav__link--btn {
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
  font-weight: inherit;
  color: inherit;
  padding: var(--spacing-sm) 0;
  text-align: left;
  width: 100%;
}

/* Mobile Navigation */
.nav--mobile {
  flex-direction: column;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.nav--mobile .nav__list {
  flex-direction: column;
  align-items: flex-start;
  gap: var(--spacing-md);
  width: 100%;
}

.nav--mobile .nav__link {
  width: 100%;
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--color-border-subtle);
}

.nav--mobile .nav__link::after {
  display: none;
}

/* Responsive */
@media (max-width: 768px) {
  .nav__list {
    gap: var(--spacing-md);
  }

  .nav__link {
    font-size: var(--font-size-sm);
  }
}