/**
 * @file
 * Functional desktop foundation for the TFK main navigation.
 *
 * This file provides the structural presentation required for the
 * Menu-Block-based desktop navigation.
 *
 * Final visual design, typography, spacing and animation will be
 * developed in a later design phase.
 *
 * Neutral colors are inherited from TheMAG's semantic navigation tokens
 * so the component follows Light and Dark Mode automatically.
 */

/* --------------------------------------------------------------------------
 * Desktop navigation base
 * -------------------------------------------------------------------------- */

.tfk-navigation-desktop {
  display: none;
}

/* --------------------------------------------------------------------------
 * Desktop navigation
 * -------------------------------------------------------------------------- */

@media (min-width: 992px) {
  .header--custom-header .header__main__left {
    flex: 1 1 auto;
    min-width: 0;
  }

  .header--custom-header .header__main__right {
    flex: 0 0 auto;
  }

  .tfk-navigation-desktop {
    display: block;
    min-width: 0;
    margin-left: 1rem;
  }

  .tfk-navigation-desktop .region,
  .tfk-navigation-desktop .block,
  .tfk-navigation-desktop nav {
    margin: 0;
    padding: 0;
  }

  .tfk-navigation-desktop .tfk-menu__list {
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .tfk-navigation-desktop .tfk-menu__list--root {
    display: flex;
    align-items: center;
    gap: 0.15rem;
  }

  .tfk-navigation-desktop .tfk-menu__item--level-0 {
    position: relative;
    flex: 0 0 auto;
    margin: 0;
    padding: 0;
  }

  .tfk-navigation-desktop .tfk-menu__entry {
    display: flex;
    align-items: center;
  }

  /* ------------------------------------------------------------------------
   * Top-level links
   * ------------------------------------------------------------------------ */

  .tfk-navigation-desktop .tfk-menu__link--level-0 {
    display: inline-flex;
    align-items: center;
    min-height: 2.5rem;
    padding: 0.45rem;
    color: var(--mag-navigation-color);
    background: transparent;
    font-size: 1.125rem;
    font-weight: 400;
    line-height: 1.2;
    text-align: left;
    text-decoration: none;
    white-space: nowrap;
  }

  .tfk-navigation-desktop
    .tfk-menu__item--level-0:hover
    > .tfk-menu__entry
    > .tfk-menu__link--level-0,
  .tfk-navigation-desktop .tfk-menu__link--level-0:focus-visible,
  .tfk-navigation-desktop .tfk-menu__link--level-0.is-active {
    color: var(--mag-navigation-color-hover);
  }

  /* ------------------------------------------------------------------------
   * Separate submenu toggle
   * ------------------------------------------------------------------------ */

  .tfk-navigation-desktop .tfk-menu__toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    width: 1.75rem;
    min-width: 1.75rem;
    height: 2.5rem;
    margin: 0 0 0 -0.2rem;
    padding: 0;
    color: var(--mag-navigation-color);
    background: transparent;
    border: 0;
  }

  .tfk-navigation-desktop
    .tfk-menu__item--level-0:hover
    > .tfk-menu__entry
    > .tfk-menu__toggle,
  .tfk-navigation-desktop .tfk-menu__toggle:focus-visible,
  .tfk-navigation-desktop .tfk-menu__toggle[aria-expanded="true"] {
    color: var(--mag-navigation-color-hover);
  }

  .tfk-navigation-desktop .tfk-menu__toggle:focus-visible,
  .tfk-navigation-desktop .tfk-menu__link:focus-visible {
    outline: 2px solid var(--mag-primary);
    outline-offset: 2px;
  }

  /*
   * Decorative CSS chevron.
   */
  .tfk-navigation-desktop .tfk-menu__toggle-icon {
    display: block;
    width: 0.45rem;
    height: 0.45rem;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: translateY(-0.1rem) rotate(45deg);
    transform-origin: center;
    transition: transform 160ms ease;
  }

  .tfk-navigation-desktop
    .tfk-menu__toggle[aria-expanded="true"]
    .tfk-menu__toggle-icon {
    transform: translateY(0.1rem) rotate(225deg);
  }

  /* ------------------------------------------------------------------------
   * Dropdown
   * ------------------------------------------------------------------------ */

  .tfk-navigation-desktop .tfk-menu__submenu {
    position: absolute;
    z-index: 40;
    top: 100%;
    left: 0;
    width: max-content;
    min-width: 16rem;
    max-width: 22rem;
    margin: 0;
    padding: 0.4rem 0;
    color: var(--mag-navigation-color);
    background: var(--mag-bg-default);
    border: 1px solid var(--mag-border);
    border-radius: 0.25rem;
    box-shadow: 0 0.5rem 1.25rem rgba(0, 0, 0, 0.16);
    text-align: left;
  }

  .tfk-navigation-desktop .tfk-menu__submenu[hidden] {
    display: none !important;
  }

  .tfk-navigation-desktop .tfk-menu__item--level-1 {
    display: block;
    width: 100%;
    margin: 0;
    padding: 0;
    text-align: left;
  }

  .tfk-navigation-desktop
    .tfk-menu__item--level-1
    > .tfk-menu__entry {
    display: block;
    width: 100%;
  }

  /*
   * Level-two items may be anchors or spans, depending on whether the
   * Drupal menu item is a link or a <nolink> entry.
   */
  .tfk-navigation-desktop .tfk-menu__link--level-1 {
    display: block;
    width: 100%;
    padding: 0.6rem 1rem;
    color: var(--mag-navigation-color);
    background: transparent;
    font-size: 0.9rem;
    font-weight: 400;
    line-height: 1.35;
    text-align: left;
    text-decoration: none;
    white-space: normal;
  }

  .tfk-navigation-desktop
    .tfk-menu__item--level-1:hover
    > .tfk-menu__entry
    > .tfk-menu__link--level-1,
  .tfk-navigation-desktop a.tfk-menu__link--level-1:focus-visible,
  .tfk-navigation-desktop a.tfk-menu__link--level-1.is-active {
    color: var(--mag-navigation-color-hover);
    background: var(--mag-navigation-bg-hover);
  }

  .tfk-navigation-desktop .tfk-menu__item.is-submenu-open {
    z-index: 41;
  }
}

/* --------------------------------------------------------------------------
 * Reduced motion
 * -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  .tfk-navigation-desktop .tfk-menu__toggle-icon {
    transition: none;
  }
}