/* Skeleton shimmer */
.skeleton {
  background: linear-gradient(
    90deg,
    #e0e0e0 0%,
    #f0f0f0 50%,
    #e0e0e0 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1500ms ease-in-out infinite;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Spinner with smooth rotation */
.spinner {
  animation: spin 700ms linear infinite;
  opacity: 0;
  animation: fade-in 200ms 200ms ease-out forwards, spin 700ms linear infinite;
}

/* Progress bar with easing */
.progress-fill {
  transition: width 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

.content-enter {
  animation: content-reveal 300ms ease-out forwards;
}

@keyframes content-reveal {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}