.screen { display: none; }
.screen.active { display: block; animation: fadeIn 0.3s ease-out; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

*:focus { outline: none; }
*:focus-visible { box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.5); }

textarea:focus, input:focus, select:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.word-page {
  aspect-ratio: 210 / 297;
  box-shadow: 0 4px 24px rgba(0,0,0,0.08), 0 1px 4px rgba(0,0,0,0.04);
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
.skeleton {
  background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 0.75rem;
}

@keyframes pulse-ring {
  0% { transform: scale(0.9); opacity: 1; }
  100% { transform: scale(1.4); opacity: 0; }
}
.pulse-dot::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: rgba(34, 197, 94, 0.3);
  animation: pulse-ring 2s ease-out infinite;
}

.loading-overlay {
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 1rem;
  z-index: 10;
}