/* Library selector ("Browse spectra") opens a tall menu (maxHeight 420) that
   overlaps the DataTable below it. dcc.Dropdown is the react-select v1 fork,
   whose menu ships with z-index: 1 — so the open menu lands *behind* the
   table's column filter inputs and sticky header, making scrolled library
   options appear to hide behind the search boxes. Lift the menu above that
   sibling content. (Scoped to #lib-select; other dropdowns are short enough
   not to overlap anything.) */
#lib-select .Select-menu-outer {
    z-index: 1100;
}