/* Subtle transition effects and section entrance animation */
.section-panel {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 280ms ease, transform 280ms ease;
}

.section-panel.hidden {
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

.welcome-card,
#catalogue {
  animation: fadeSlideIn 320ms ease;
}