/* palette.css — 악기 팔레트 (우측 탭 패널 안에 들어감) */

.palette-group { margin-bottom: 14px; }
.palette-group:last-child { margin-bottom: 0; }
.palette-group .group-label {
  font-size: 10px;
  color: var(--dim);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 6px;
  padding-left: 2px;
}
.swatch-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}
.swatch {
  aspect-ratio: 1;
  border-radius: 10px;
  border: 2px solid transparent;
  cursor: pointer;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 4px 2px;
  font-size: 9px;
  font-weight: 700;
  color: #10161c;
  text-shadow: 0 1px 0 rgba(255,255,255,0.35);
  overflow: hidden;
  transition: transform 80ms, box-shadow 120ms, border-color 120ms;
  white-space: nowrap;
}
.swatch:active { transform: scale(0.94); }
.swatch.active {
  border-color: #fff;
  box-shadow: 0 0 0 2px rgba(255,255,255,0.3), 0 0 12px rgba(255,255,255,0.45);
}

/* ─── 빈 악기 토글 (팔레트 맨 위, 가로 풀폭) ─────────────────── */
.swatch-empty {
  width: 100%;
  aspect-ratio: auto;
  height: 36px;
  background: var(--panel-2);
  border: 1px dashed var(--line);
  color: var(--muted);
  text-shadow: none;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
  border-radius: 8px;
  letter-spacing: 0.3px;
}
.swatch-empty:hover {
  background: var(--bg-soft);
  color: var(--text);
}
.swatch-empty.active {
  background: var(--bg-soft);
  border-color: #fff;
  color: var(--text);
  box-shadow: 0 0 0 1px rgba(255,255,255,0.25);
}