/* Deutlicher Hinweis, wenn einzelne Dateien beim Upload ausgelassen wurden. */
.form-message.is-error {
  color: #8f231e;
  background: #fff0ed;
  border-left: 4px solid #b33a31;
  padding: .85rem 1rem;
  font-weight: 600;
  line-height: 1.55;
}

.button:disabled {
  opacity: .55;
  cursor: not-allowed;
}
.button.is-loading {
  position: relative;
  padding-right: 2.7rem;
}
.button.is-loading::after {
  content: '';
  position: absolute;
  right: 1rem;
  top: 50%;
  width: 14px;
  height: 14px;
  margin-top: -7px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: button-spin .7s linear infinite;
}
@keyframes button-spin {
  to { transform: rotate(360deg); }
}
.form-message.is-busy {
  font-weight: 700;
}