.auth-loading-card {
  overflow: hidden;
}

.auth-loading-line {
  height: 4px;
  margin-top: 18px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--soft) 0%, var(--red) 45%, var(--soft) 90%);
  background-size: 220% 100%;
  animation: auth-loading 1.1s ease-in-out infinite;
}

@keyframes auth-loading {
  from { background-position: 100% 0; }
  to { background-position: -100% 0; }
}

@media (prefers-reduced-motion: reduce) {
  .auth-loading-line { animation: none; }
}