/* --- Bottoni: primario pieno indigo, secondario outline --- */
.cta-button,
.submit-btn,
.year-ok-btn {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border: none;
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
  color: #fff;
  font-weight: 600;
}