/**
 * Loading states — skeleton shimmer, spinners, empty states
 * Split from components.css — Phase 3.2
 */

/* ========================================
   LOADING STATES
   ======================================== */

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-surface-secondary) 25%,
    var(--color-border) 50%,
    var(--color-surface-secondary) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

.loading-spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* Spinning animation for regenerate button */
.btn--icon.is-spinning {
  animation: spin 0.5s ease-out;
}

/* ========================================
   EMPTY STATES
   ======================================== */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-6);
  text-align: center;
}

.empty-state__icon {
  font-size: 48px;
  margin-bottom: var(--space-4);
}

.empty-state__title {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-2);
}

.empty-state__message {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  max-width: 320px;
}