/* Mobile menu scroll fix
   When the header nav expands into a full-screen mobile menu and its
   content exceeds the viewport height, allow internal scrolling so
   no items get clipped under the pinned Donate button.
   Does not affect the closed nav (80px) which never overflows. */
header nav.fixed.top-0,
nav.fixed.top-0.left-0.right-0 {
  max-height: 100vh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
}

/* Ensure the inner column inside the open mobile menu can grow and
   leaves breathing room at the bottom so the last menu item isn't
   visually covered by the sticky Donate button. */
header nav.fixed.top-0 > div,
nav.fixed.top-0.left-0.right-0 > div {
  min-height: 0;
}