/* ---------- Base tweaks ---------- */

.menu-bar {
  display: flex;
  align-items: stretch;
  gap: 0;
}

.menu-bar > li {
  position: relative;
}

.menu-link {
  text-decoration: none;
}

/* ---------- Compact dropdowns ----------
   Applied to top-level items with class: menu-compact
   Keeps Research as full mega-menu, but makes About/News/Join us compact.
--------------------------------------- */

.menu-bar > li.menu-compact > .mega-menu,
.menu-bar > li.menu-compact .mega-menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: auto;
  width: 18rem;
  min-width: 16rem;
  max-width: 22rem;
  display: none;
  padding: 0.4rem 0;
  margin: 0;
  z-index: 1000;
  box-sizing: border-box;
}

/* Show on hover and keyboard focus */
.menu-bar > li.menu-compact:hover > .mega-menu,
.menu-bar > li.menu-compact:focus-within > .mega-menu {
  display: block;
}

/* Neutralise the multi-column layout for compact menus */
.menu-bar > li.menu-compact > .mega-menu {
  grid-template-columns: none !important;
  column-count: 1 !important;
}

.menu-bar > li.menu-compact > .mega-menu > li,
.menu-bar > li.menu-compact > .mega-menu .menu-list {
  display: block;
  width: 100%;
  margin: 0;
  padding: 0;
}

/* Compact item styling */
.menu-bar > li.menu-compact > .mega-menu .mega-menu-header,
.menu-bar > li.menu-compact > .mega-menu .menu-link {
  display: block;
  width: 100%;
  box-sizing: border-box;
  text-transform: none;
  white-space: normal;
  line-height: 1.35;
  padding: 0.55rem 0.9rem;
}

/* Remove heavy section-header feel inside compact menus */
.menu-bar > li.menu-compact > .mega-menu .mega-menu-header {
  font-weight: 500;
  font-size: 1rem;
}

/* Hide mobile back item on desktop compact menus */
.menu-bar > li.menu-compact > .mega-menu .mobile-menu-back-item {
  display: none;
}

/* ---------- Wider dropdown for Research ----------
   Leave it as a mega-menu, but make wrapping cleaner.
--------------------------------------- */

.menu-bar > li:not(.menu-compact) > .mega-menu .mega-menu-header {
  text-transform: none;
  white-space: normal;
  line-height: 1.35;
}

.menu-bar > li:not(.menu-compact) > .mega-menu .menu-link {
  white-space: normal;
  line-height: 1.35;
}

/* ---------- Optional visual polish ----------
   Only add these if your skin does not already handle colors/backgrounds well.
--------------------------------------- */

.menu-bar > li.menu-compact > .mega-menu {
  background: #fff;
  border: 1px solid rgba(0,0,0,0.12);
  box-shadow: 0 8px 20px rgba(0,0,0,0.12);
  border-radius: 0.35rem;
}

.menu-bar > li.menu-compact > .mega-menu .menu-link:hover,
.menu-bar > li.menu-compact > .mega-menu .menu-link:focus {
  background: rgba(0,0,0,0.05);
}

/* ---------- Mobile ----------
   Fall back to block layout.
--------------------------------------- */

@media (max-width: 900px) {
  .menu-bar {
    display: block;
  }

  .menu-bar > li.menu-compact > .mega-menu,
  .menu-bar > li.menu-compact .mega-menu {
    position: static;
    width: auto;
    min-width: 0;
    max-width: none;
    display: block;
    border: 0;
    box-shadow: none;
    border-radius: 0;
    padding: 0;
  }

  .menu-bar > li.menu-compact > .mega-menu .mobile-menu-back-item {
    display: list-item;
  }
}