/* ==========================================================================
   NAVBAR MAIN CONTAINER
   ========================================================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem;
  background: rgba(253, 253, 253, 0.15);
  backdrop-filter: blur(0.875rem);
}

/* === Brand & Identity === */
.nav__brand {
  margin: -0.125rem 0;
  align-items: flex-start;
}

.nav__name {
  font-size: 1.125rem;
  line-height: 1.75rem;
  color: var(--color-primary-600);
}

.nav__role {
  margin-top: -0.25rem;
  font-size: 0.625rem;
  line-height: 1rem;
  color: var(--color-secondary);
}

/* === Desktop Navigation (Tablet and Desktop) === */
.nav__list {
  display: none; /* Hidden by default, shown in Media Query */
  gap: 2rem;
}

.nav__item {
  padding: 0.25rem 0.25rem 0 0.25rem;
  border-bottom: 0.25rem solid transparent;
}

.nav__item-link {
  font-size: var(--fs-sm);
  line-height: 1.5625rem;
  color: var(--color-neutral-12);
  text-decoration: none;
  gap: 0.5rem;
}

/* === Dropdown Components === */
.nav__dropdown {
  color: var(--color-neutral-300);
}

.dropdown__label {
  font-size: var(--fs-sm);
  line-height: 1.5625rem;
}

.dropdown__icon {
  font-size: 1.5rem;
  transition: transform 0.3s ease;
}

.dropdown__list {
  display: none;
  position: absolute;
  top: calc(100% + 0.125rem);
  left: 0;
  right: auto;
  z-index: 1001;
	border-radius: 0.125rem;
  background-color: var(--color-background);
  padding: 0.5rem;
  gap: 0.25rem;
  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.1);
}

.dropdown__link {
  font-size: var(--fs-xs);
  color: var(--color-neutral-12);
  white-space: nowrap;
  text-decoration: none;
}

/* === Action buttons (Contact & Mobile Toggle) === */
.nav__actions {
  gap: 0.5em;
}

.nav__menu-icon {
  font-size: 1.5rem;
  color: var(--color-secondary);
}

/* === Mobile Menu (Overlay) === */
.nav__mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  left: 0;
  z-index: 1000;
  padding: 0.5rem 1rem 1.5rem;
  background-color: var(--color-background);
}

.nav__mobile-list {
  gap: 2.0625rem;
}

/* Separator line for mobile items */
.nav__mobile-list > li:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1.25rem;
  width: 100%;
  height: 0.0625rem;
  background: var(--color-tertiary);
}

.nav__mobile-icon {
  font-size: 1.25rem;
  color: var(--color-secondary);
}

/* === Mobile Sub-groups === */
.nav__mobile-group {
  gap: 0.25rem;
}

.nav__item-link--group {
  padding: 0.25rem;
}

.nav__mobile-sublist {
  gap: 0.25rem;
}

.nav__item-link--subitem {
  font-size: var(--fs-xs);
}

/* === Dynamic states (Data Attributes) === */
/* Mobile Menu Toggle States */
body:has(.nav[data-open-mobile-menu="true"]) {
  overflow: hidden;
}

.nav[data-open-mobile-menu="true"] {
  background-color: var(--color-primary-50);
  padding-bottom: 0.9375rem;
  border-bottom: 0.0625rem solid var(--color-primary-200);
}

.nav[data-open-mobile-menu="true"] #navbar-menu-icon,
.nav[data-open-mobile-menu="false"] #navbar-close-icon {
  display: none;
}

.nav[data-open-mobile-menu="true"] #navbar-close-icon,
.nav[data-open-mobile-menu="false"] #navbar-menu-icon,
.nav[data-open-mobile-menu="true"] #mobile-menu {
  display: block;
}

/* Selection States */
.nav__item[data-selected="true"] {
  border-bottom-color: var(--color-primary-500);
}

.nav__item[data-selected="true"] .nav__item-link {
  color: var(--color-primary-500);
}

.nav__item[data-selected="true"] .nav__mobile-icon {
  display: none;
}

/* ==========================================================================
   MEDIA QUERIES (Tablet Overrides)
   ========================================================================== */
@media (min-width: 50rem) {
  .nav {
    padding: 1rem 2rem;
  }

  .nav__brand {
    margin: 0;
  }

  .nav__name {
    font-size: var(--fs-md);
    line-height: 2.375rem;
  }

  .nav__role {
    margin-top: -0.375rem;
    font-size: var(--fs-xs);
    line-height: 1.375rem;
  }

  .nav__list {
    display: flex;
  }

  .nav__item {
    padding: 0.125rem 0.125rem 0 0.125rem;
    border-bottom-width: 0.125rem;
  }

  .nav__item-link {
    font-weight: 500;
    color: var(--color-neutral-300);
  }

  .nav__menu-button,
  .nav__mobile-menu {
    display: none;
  }

  .nav__item[data-selected="true"] {
    border-bottom-color: var(--color-neutral-300);
  }

  .nav__item[data-selected="true"] .nav__item-link {
    color: var(--color-neutral-300);
    font-weight: 700;
  }

  .nav__item[data-open-dropdown="true"] .dropdown__list {
    display: flex;
  }

  .nav__item[data-open-dropdown="true"] .dropdown__icon {
    transform: rotate(180deg);
  }

  .nav__item[data-selected="true"] > .dropdown__link,
  .nav__item[data-selected="true"] .dropdown__label {
    font-weight: 700;
  }
}

/* ==========================================================================
   MEDIA QUERIES (Desktop Overrides)
   ========================================================================== */
@media (min-width: 90rem) {
  .nav {
    padding: 1rem var(--horizontal-padding-desktop);
  }
}