/* ============================================================
   Resources — Calculator page styles
   Tab button states + disabled-group (for when RBT is selected)
   ============================================================ */

.calc-btn {
  color: var(--color-gray-600);
  background: transparent;
  cursor: pointer;
  border: 0;
}
.calc-btn.active {
  color: var(--color-purple-600);
  background: #ffffff;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
}
.calc-btn:not(.active):hover {
  color: var(--color-gray-700);
}

/* Greyed-out group (Standard / Fieldwork Type go disabled when RBT is picked) */
.calc-group-disabled {
  opacity: 0.45;
  pointer-events: none;
}