/* Spectral Frequency Display: spectrogram lanes under the waveform, the
   divider between them, the frequency ruler and the settings button. */

.wf-lanes canvas.spec-gl,
.wf-lanes canvas.spec-overlay {
  left: 0;
  pointer-events: none;
}

.spec-gl[hidden],
.spec-overlay[hidden],
.spec-divider[hidden],
.spec-ruler[hidden],
.spec-ruler-hit[hidden],
.spec-settings[hidden],
.spec-readout[hidden] {
  display: none;
}

.spec-divider {
  position: absolute;
  left: 0;
  right: 0;
  z-index: 3;
  height: 8px;
  cursor: row-resize;
  touch-action: none;
  outline: none;
}

.spec-divider::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 3px;
  height: 2px;
}

.spec-divider:hover::after,
.spec-divider:focus-visible::after {
  background: var(--accent);
}

.spec-divider:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: -2px;
}

.wf-amp canvas.spec-ruler {
  inset: auto;
  left: 0;
}

.spec-ruler-hit {
  position: absolute;
  left: 0;
  right: 0;
  cursor: ns-resize;
  touch-action: none;
}

.icon-btn.spec-settings {
  position: absolute;
  right: 3px;
  z-index: 2;
}

.spec-readout {
  position: absolute;
  right: 6px;
  z-index: 2;
  padding: 1px 5px;
  border-radius: var(--radius-sm);
  background: var(--bg-raised);
  color: var(--text-strong);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  white-space: pre;
  pointer-events: none;
  opacity: 0.9;
}

@media (pointer: coarse) {
  .spec-divider {
    height: 16px;
    margin-top: -4px;
  }

  .spec-divider::after {
    top: 7px;
  }
}