/* Color Vision */
.cv-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  width: 100%;
}
.cv-grid {
  display: grid;
  gap: 8px;
  width: 100%;
  max-width: 340px;
  aspect-ratio: 1;
  background: var(--card);
  padding: 10px;
  border-radius: 16px;
  box-shadow: inset 0 2px 10px rgba(0,0,0,0.2);
}
.cv-tile {
  background: var(--primary);
  border-radius: 8px;
  cursor: pointer;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  transition: transform 0.1s;
}
.cv-tile:active {
  transform: scale(0.95);
}
.cv-message {
  font-size: 1.1rem;
  font-weight: 600;
  text-align: center;
  min-height: 1.5em;
}