/* Mobile-only: When the drawer is closed, make the entire sidebar non-interactive */
@media screen and (max-width: 76.1875em) {
  #__drawer:not(:checked) ~ .md-container .md-sidebar--primary {
    display: none !important;
  }

  /* When a submenu is open at any level, hide siblings that aren't open */
    .md-nav:has(> .md-nav__list > .md-nav__item > .md-nav__toggle:checked) {
      > .md-nav__list > .md-nav__item:not(:has(> .md-nav__toggle:checked)) {
        display: none !important;
      }

  /* Hide the parent link (label or div) when a child submenu is open */
    > .md-nav__list > .md-nav__item:has(> .md-nav__toggle:checked) {
      > .md-nav__container > .md-nav__link:first-child,
      > label.md-nav__link:first-child {
        display: none !important;
      }

  /* Hide back button when a deeper submenu is open */
      &:has(> .md-nav > .md-nav__list > .md-nav__item > .md-nav__toggle:checked) {
        > .md-nav > .md-nav__title {
          display: none !important;
        }
      }
    }
  }
}

/* Hide navigation checkboxes */
.md-nav__toggle {
  display: none !important;
}

/* Hide child nav when parent checkbox is not checked */
.md-nav__item:has(> .md-nav__toggle:not(:checked)) > .md-nav {
  display: none !important;
}

/* Ensure keyboard focus is visible */
.md-nav__link:focus-visible {
  outline: 2px solid var(--md-primary-fg-color) !important;
  outline-offset: 2px !important;
}

/* Remove quirky line in front of active link */
.md-nav__link--active::before {
  width: 0 !important;
}

/* Show focus indicator on visible back button when hidden link has focus */
.md-nav__item:has(> .md-nav__container > .md-nav__link[id$="_label"]:focus-visible) > .md-nav > .md-nav__title[for] {
  outline: 2px solid var(--md-primary-fg-color) !important;
  outline-offset: 2px !important;
}

/* Focus indicator for back buttons when they receive direct focus */
.md-nav__title[for]:focus-visible .md-nav__icon {
  outline: 2px solid var(--md-primary-fg-color) !important;
  outline-offset: 2px !important;
  border-radius: 4px;
}

/* Remove focus indicator from the label itself */
.md-nav__title[for]:focus-visible {
  outline: none !important;
}

/* Focus-visible close button for mobile sidebar */
.md-nav__close-button {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--md-default-fg-color);
  color: var(--md-default-bg-color);
  border: none;
  border-radius: 0.2rem;
  font: 500 0.64rem/1 inherit;
  cursor: pointer;
  opacity: 0;
  transform: translateY(-0.5rem);
  transition: opacity 0.2s, transform 0.2s;
  pointer-events: none;
  z-index: 2;
}

.md-nav__close-button:focus,
.md-nav__close-button:focus-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
  outline: 2px solid var(--md-accent-fg-color);
  outline-offset: 2px;
}