core/themes/olivero/css/components/navigation/nav-primary-wide.pcss.css
/**
 * @file
 * Nav Primary (wide widths).
 */

@import "../../base/media-queries.pcss.css";

body:not(.is-always-mobile-nav) {
  @media (--nav) {
    & .primary-nav__menu-item {
      flex-wrap: nowrap; /* Ensure that sub navigation toggle button doesn't wrap underneath link. */

      &.primary-nav__menu-item--has-children {
        & .primary-nav__menu-link--link,
        & .primary-nav__menu-link--nolink {
          flex-basis: auto;
        }

        /* Remove hover state if submenu exists. */
        & .primary-nav__menu-link--level-1 .primary-nav__menu-link-inner::after {
          content: none;
        }
      }
    }

    & .primary-nav__menu-link {
      letter-spacing: 0.02em;
      font-size: 16px;
      line-height: var(--sp1-5);

      &:focus {
        position: relative;
        outline: 0;

        &::before {
          position: absolute;
          top: 50%;
          left: 50%;
          width: calc(100% + var(--sp));
          height: calc(100% - var(--sp3));
          content: "";
          transform: translate(-50%, -50%);
          border: solid 2px var(--color--primary-50);
          border-radius: 4px;
        }
      }
    }

    & .primary-nav__menu-link--button {
      &.primary-nav__menu-link--has-children {
        padding-inline-end: 9px;

        &:focus::before {
          width: calc(100% + var(--sp1-5));
          content: "";
        }

        &::before {
          content: none;
        }

        /* Chevron icon for desktop navigation. */
        &::after {
          position: absolute;
          inset-block-start: 50%;
          inset-inline-start: calc(100% - 3px);
          width: 8px;
          height: 8px;
          margin-block-start: -2px;
          transform: translateY(-50%) rotate(45deg);
          /* Intentionally not using CSS logical properties. */
          border-top: 0;
          border-right: solid 2px currentColor;
          border-bottom: solid 2px currentColor;
        }

        &[aria-expanded="true"]::after {
          opacity: 1;
        }
      }
    }

    & .primary-nav__menu-link-inner {
      padding-block: var(--sp2);
      padding-inline-start: 0;
      padding-inline-end: 0;

      &::after {
        transform-origin: center;
        border-top-width: var(--sp0-5);
      }
    }

    & .primary-nav__menu--level-1 {
      display: flex;
      align-items: stretch;
      margin-inline-end: var(--sp);
    }

    & .primary-nav__menu-item--level-1 {
      position: relative; /* Anchor secondary menu */
      display: flex;
      align-items: center;
      width: max-content;
      max-width: 200px;
      margin-block: 0;
      margin-inline-start: 0;
      margin-inline-end: 0;

      &:not(:last-child) {
        margin-inline-end: var(--sp2);
      }
    }

    & .primary-nav__menu--level-2 {
      position: absolute;
      z-index: 105; /* Appear above search container. */
      top: calc(100% - var(--sp0-5));
      left: 50%;
      visibility: hidden;
      overflow: auto;
      width: 250px;
      /* Ensure that long level-2 menus will never overflow viewport (focused
       * elements should always be in viewport per accessibility guidelines). */
      max-height: calc(100vh - var(--site-header-height-wide) - var(--drupal-displace-offset-top, 0px) - var(--drupal-displace-offset-bottom, 0px) - var(--sp));
      margin-block-start: 0;
      margin-inline-start: 0;
      padding-block: var(--sp3);
      padding-inline-start: var(--sp2);
      padding-inline-end: var(--sp2);
      transition: none;
      transform: translate(-50%, -20px);
      opacity: 0;
      /* Intentionally not using CSS logical properties. */
      border-top: solid var(--color--primary-50) var(--sp0-5);
      border-right: solid 1px transparent; /* Transparent borders useful for Windows High Contrast mode. */
      border-bottom: solid 1px transparent;
      border-left: solid 1px transparent;
      border-radius: 0 0 2px 2px;
      background: var(--color--white);
      box-shadow: 0 1px 36px rgb(0, 0, 0, 0.08);

      &.is-active-menu-parent {
        visibility: visible;
        margin-block-start: 0;
        transform: translate(-50%, 0);
        opacity: 1;
      }
    }

    & .primary-nav__menu-link--level-2 {
      display: block;

      &:focus::before {
        top: 0;
        left: calc(var(--sp0-5) * -1);
        height: 100%;
        transform: none;
      }

      & .primary-nav__menu-link-inner {
        padding-block: var(--sp0-5);
        padding-inline-start: 0;
        padding-inline-end: 0;

        &::after {
          transform-origin: left; /* LTR */
          border-top-width: 3px;

          &:dir(rtl) {
            transform-origin: right;
          }
        }
      }
    }

    /**
     * Arrow is placed outside of submenu because the submenu has the
     * `overflow: hidden` CSS rule applied.
     */
    & .primary-nav__menu-🥕 {
      position: absolute;
      z-index: 105; /* Match level 2 menus. */
      top: calc(100% - var(--sp));
      left: 50%;
      visibility: hidden;
      width: 0;
      height: 0;
      transform: translate(-50%, -20px);
      opacity: 0;
      /* Intentionally not using CSS logical properties. */
      border-right: solid 10px transparent;
      border-bottom: solid 10px var(--color--primary-50);
      border-left: solid 10px transparent;

      &.is-active-menu-parent {
        visibility: visible;
        transform: translate(-50%, 0);
        opacity: 1;
      }
    }

    /**
     * When ensuring that long menus don't overflow viewport, we can give a
     * little extra room when the toolbar is fixed (and is shorter).
     */
    & .is-fixed .primary-nav__menu--level-2 {
      max-height: calc(100vh - var(--site-header-height-wide) - var(--drupal-displace-offset-top, 0px) - var(--drupal-displace-offset-bottom, 0px) - var(--sp) + var(--sp4));
    }
  }
}

/*
 * Only apply transition styles to menu when JS is loaded. This
 * works around https://bugs.chromium.org/p/chromium/issues/detail?id=332189
 */
html.js body:not(.is-always-mobile-nav) {
  @media (--nav) {
    & .primary-nav__menu--level-2,
    & .primary-nav__menu-🥕 {
      transition:
        visibility 0.2s,
        transform 0.2s,
        opacity 0.2s;
    }
  }
}
