.alpha-btn {
  background-color: #ffffff;   /* Default: wie A */
  color: #004c97;
  border: 1px solid #004c97;
  border-radius: 0.375rem;
  font-family: 'Roboto', sans-serif;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  min-width: 36px;
  text-align: center;
  transition: all 0.2s ease;
}

/* Hover & Active: wie B */
.alpha-btn:hover:not(:disabled):not(.disabled),
.alpha-btn.active,
.alpha-btn:active {
  background-color: #004c97;
  color: #ffffff;
  border-color: #004c97;
}

/* Disabled: wie D */
.alpha-btn:disabled,
.alpha-btn.disabled {
  background-color: #edf4fb;
  color: #aac6e8;
  border-color: #edf4fb;
  cursor: not-allowed;
  pointer-events: none;
}