/* Preloader overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  pointer-events: auto;
  opacity: 1;
  transition: opacity 0.4s ease-out, z-index 0s linear 0.4s;
}

.loading-overlay.hidden {
  opacity: 0;
  pointer-events: none;
  z-index: -1;
}

/* Spinner animation */
.spinner {
  width: 48px;
  height: 48px;
  border: 3px solid rgba(27, 217, 111, 0.2);
  border-top: 3px solid var(--accent-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}