.bb-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  width: 100%;
}

.bb-level-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 10px;
}
.bb-level-btn {
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  font-weight: 800;
  font-size: 0.9rem;
  cursor: pointer;
}
.bb-level-btn[aria-pressed="true"] {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-on-accent);
}
.bb-level-btn:disabled { cursor: default; opacity: 0.45; }

.bb-canvas { background: linear-gradient(180deg, #cfeeff, #eaf7ff); }

.bb-plank-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 12px;
}
.bb-plank-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 12px;
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: inherit;
  font-weight: 700;
  font-size: 0.88rem;
  cursor: pointer;
}
.bb-plank-btn:hover:not(:disabled) { border-color: var(--color-primary); }
.bb-plank-btn:disabled { opacity: 0.4; cursor: default; }

.bb-send-row {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 10px;
}