.field-hint {
  margin: 7px 0 0;
  font-size: var(--text-xs);
  color: var(--text-dim);
  line-height: 1.45;
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transform: translateY(-2px);
  transition:
    opacity 0.38s cubic-bezier(0.22, 1, 0.36, 1),
    max-height 0.38s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.38s cubic-bezier(0.22, 1, 0.36, 1),
    margin 0.38s cubic-bezier(0.22, 1, 0.36, 1);
}

.field-hint.is-visible {
  opacity: 1;
  max-height: 40px;
  transform: translateY(0);
}

.field-hint.is-hidden {
  pointer-events: none;
}

.field.is-field-invalid input,
.login-field.is-field-invalid input {
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.025);
  transition:
    border-color 0.28s ease,
    background 0.28s ease,
    box-shadow 0.28s ease;
}

.field.is-field-invalid input:focus,
.login-field.is-field-invalid input:focus {
  border-color: rgba(255, 255, 255, 0.28);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.04);
}

.alert.alert-gentle {
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.035);
  color: var(--text-muted);
}

@media (prefers-reduced-motion: reduce) {
  .field-hint,
  .field.is-field-invalid input,
  .login-field.is-field-invalid input {
    transition: none !important;
    transform: none !important;
  }
}