.pcr-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  width: 100%;
}

.pcr-diff-row {
  display: flex;
  gap: 8px;
  justify-content: center;
}
.pcr-diff-btn {
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  border-radius: 999px;
  padding: 8px 16px;
  font-weight: 800;
  font-size: 0.85rem;
  cursor: pointer;
}
.pcr-diff-btn[aria-pressed="true"] {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
}

.pcr-board {
  display: grid;
  grid-template-columns: repeat(var(--pcr-size, 6), 1fr);
  gap: 4px;
  width: 100%;
  max-width: 420px;
  padding: 8px;
  border-radius: var(--radius-md);
  background: rgba(255,183,77,0.08);
  box-shadow: inset 0 0 0 2px var(--color-border);
}

.pcr-cell {
  aspect-ratio: 1 / 1;
  border-radius: 8px;
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  font-size: clamp(1rem, 3.6vw, 1.5rem);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
}
.pcr-cell:hover { border-color: var(--color-primary); }
.pcr-cell--selected {
  background: rgba(79,216,224,0.28);
  border-color: var(--color-primary);
}