/* Accessible primary navigation and full-width mega-menu presentation. */

.site-header {
  isolation: isolate;
  overflow: visible;
  z-index: 1000;
}

.site-header__bar,
.primary-navigation,
.primary-menu {
  position: static;
  overflow: visible;
}

.primary-menu > li {
  display: flex;
  align-items: center;
}

.primary-menu > li > a {
  flex: 1 1 auto;
}

.submenu-toggle {
  display: inline-grid;
  width: 2rem;
  height: 2rem;
  flex: 0 0 auto;
  place-items: center;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
}

.submenu-toggle__icon {
  width: .48rem;
  height: .48rem;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: translateY(-.12rem) rotate(45deg);
  transition: transform .2s ease;
}

.menu-item-has-children.is-submenu-open > .submenu-toggle .submenu-toggle__icon {
  transform: translateY(.12rem) rotate(225deg);
}

.primary-menu .menu-item-has-children.is-submenu-open > .sub-menu {
  display: block;
}

.primary-menu > .menu-item--mega {
  position: static;
}

.primary-menu > .menu-item--mega > .sub-menu {
  position: absolute;
  z-index: 80;
  top: 100%;
  right: 0;
  left: 0;
  display: grid;
  visibility: hidden;
  width: 100%;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 0;
  padding: clamp(1.65rem, 3vw, 2.5rem) max(1.25rem, calc((100% - 78rem) / 2));
  border: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(251, 250, 247, .995);
  box-shadow: 0 28px 60px rgba(16, 27, 43, .16);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-.35rem);
  transition: opacity .16s ease, transform .16s ease, visibility 0s linear .16s;
}

/* Descendants must inherit the panel's interaction state. Without this, the
 * nested columns from every hidden mega panel can still intercept pointer
 * events and cover the links in the panel that is visibly open. */
.primary-menu > .menu-item--mega > .sub-menu * {
  visibility: inherit;
  pointer-events: inherit;
}

.primary-menu > .menu-item--mega:hover > .sub-menu,
.primary-menu > .menu-item--mega:focus-within > .sub-menu,
.primary-menu > .menu-item--mega.is-submenu-open > .sub-menu {
  display: grid;
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
  transform: none;
  transition-delay: 0s;
}

.primary-menu > .menu-item--mega > .sub-menu > li {
  min-width: 0;
  padding-inline: clamp(1rem, 2.5vw, 2.25rem);
  border-left: 1px solid var(--line);
}

.primary-menu > .menu-item--mega > .sub-menu > li:first-child {
  padding-left: 0;
  border-left: 0;
}

.primary-menu > .menu-item--mega > .sub-menu > li:last-child {
  padding-right: 0;
}

.mega-menu__heading {
  display: block;
  margin-bottom: .75rem;
  color: var(--red-dark);
  font-size: clamp(.78rem, .18vw + .74rem, .86rem);
  font-weight: 850;
  letter-spacing: .13em;
  line-height: 1.35;
  text-transform: uppercase;
}

.primary-menu > .menu-item--mega > .sub-menu > .menu-item--mega-group > .sub-menu {
  position: static;
  display: block;
  visibility: inherit;
  width: auto;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  opacity: 1;
  pointer-events: inherit;
  transform: none;
}

.primary-menu > .menu-item--mega > .sub-menu > .menu-item--mega-group > .sub-menu a {
  position: relative;
  display: block;
  padding: .58rem 1.25rem .58rem 0;
  color: var(--ink);
  font-size: clamp(.96rem, .18vw + .92rem, 1.05rem);
  font-weight: 700;
  letter-spacing: .005em;
  line-height: 1.45;
  text-transform: none;
}

.primary-menu > .menu-item--mega > .sub-menu > .menu-item--mega-group > .sub-menu a::after {
  content: "→";
  position: absolute;
  top: .55rem;
  right: 0;
  color: var(--red-dark);
  opacity: 0;
  transform: translateX(-.35rem);
  transition: opacity .2s ease, transform .2s ease;
}

.primary-menu > .menu-item--mega > .sub-menu > .menu-item--mega-group > .sub-menu a:hover,
.primary-menu > .menu-item--mega > .sub-menu > .menu-item--mega-group > .sub-menu a:focus-visible,
.primary-menu > .menu-item--mega > .sub-menu > .menu-item--mega-group > .sub-menu .current-menu-item > a {
  color: var(--red-dark);
}

.primary-menu > .menu-item--mega > .sub-menu > .menu-item--mega-group > .sub-menu a:hover::after,
.primary-menu > .menu-item--mega > .sub-menu > .menu-item--mega-group > .sub-menu a:focus-visible::after {
  opacity: 1;
  transform: none;
}

@media (max-width: 70rem) {
  .site-header__bar,
  .primary-menu {
    position: static;
  }

  .primary-navigation {
    position: fixed;
  }

  .primary-menu > li {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .primary-menu > li > .sub-menu {
    grid-column: 1 / -1;
  }

  .primary-menu > li > a {
    font-size: clamp(.9rem, 2.1vw, 1rem);
    letter-spacing: .06em;
  }

  .primary-menu .sub-menu a {
    font-size: clamp(.94rem, 2vw, 1rem);
    line-height: 1.5;
  }

  .submenu-toggle {
    width: 3rem;
    height: 3rem;
    border-bottom: 1px solid var(--line);
  }

  .js .primary-menu .menu-item-has-children > .sub-menu {
    display: none;
  }

  .js .primary-menu .menu-item-has-children.is-submenu-open > .sub-menu {
    display: block;
  }

  .js .primary-menu .menu-item--mega.is-submenu-open > .sub-menu {
    display: grid;
  }

  .primary-menu > .menu-item--mega > .sub-menu {
    position: static;
    visibility: visible;
    width: auto;
    grid-template-columns: 1fr;
    padding: .35rem 0 .75rem 1rem;
    border-top: 0;
    border-bottom: 1px solid var(--line);
    background: transparent;
    box-shadow: none;
    opacity: 1;
    pointer-events: auto;
    transform: none;
    transition: none;
  }

  .primary-menu > .menu-item--mega > .sub-menu > li,
  .primary-menu > .menu-item--mega > .sub-menu > li:first-child,
  .primary-menu > .menu-item--mega > .sub-menu > li:last-child {
    padding: 1rem 0;
    border: 0;
    border-top: 1px solid var(--line);
  }

  .primary-menu > .menu-item--mega > .sub-menu > li:first-child {
    border-top: 0;
  }

  .primary-menu > .menu-item--mega > .sub-menu > .menu-item--mega-group > .sub-menu {
    display: block !important;
    visibility: visible;
    margin-left: 0;
    pointer-events: auto;
  }

  .mega-menu__heading {
    margin-bottom: .45rem;
    font-size: .8rem;
  }

  .primary-menu > .menu-item--mega > .sub-menu > .menu-item--mega-group > .sub-menu a {
    padding-block: .55rem;
    font-size: clamp(.94rem, 2vw, 1rem);
  }
}