/* Short, optional motion: content stays usable throughout each transition. */
@media (prefers-reduced-motion: no-preference) {
  .nav button, .seg button, [data-management-tab], .calendar-btn, .pdf-btn, .theme-toggle {
    transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
  }
}
@media (prefers-reduced-motion: reduce) {
  .nav button, .seg button, [data-management-tab], .calendar-btn, .pdf-btn, .theme-toggle {
    transition: none;
  }
}