.p4-stage {
  position: relative;
}

.p4-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.p4-box {
  position: absolute;
  display: none;
}

/* Cada caja usa un trazo distinto: el color no puede ser el único canal (WCAG 1.4.1). */
.p4-box--line {
  color: var(--p4-color-line-box);
  outline: var(--p4-core-hairline) solid currentcolor;
  background: color-mix(in srgb, currentcolor 6%, transparent);
}

.p4-box--content {
  color: var(--p4-color-content-box);
  outline: var(--p4-core-hairline) dashed currentcolor;
}

.p4-box--ink {
  color: var(--p4-color-ink-box);
  outline: var(--p4-core-hairline) dotted currentcolor;
}

.p4-box--baseline {
  height: 0;
  color: var(--p4-color-baseline);
  border-top: var(--p4-core-hairline) solid currentcolor;
}

[data-show-line="on"] .p4-box--line,
[data-show-content="on"] .p4-box--content,
[data-show-ink="on"] .p4-box--ink,
[data-show-baseline="on"] .p4-box--baseline {
  display: block;
}

/* El run inline es lo que se mide: sus client rects dan el área de contenido por línea. */
.p4-run {
  position: relative;
  z-index: 2;
}

/* Un inline-block de alto 0 se apoya exactamente sobre la baseline de su línea. */
.p4-baseline-probe {
  display: inline-block;
  width: 0;
  height: 0;
  overflow: hidden;
}

.p4-legend {
  display: grid;
  gap: var(--p4-spacing-4);
  font-size: var(--p4-core-font-size-11);
}

.p4-legend__item {
  display: flex;
  align-items: center;
  gap: var(--p4-spacing-8);
  min-height: 24px;
}

.p4-legend__item label {
  display: flex;
  align-items: center;
  gap: var(--p4-spacing-8);
  min-height: 24px;
  cursor: pointer;
}

.p4-legend__item input {
  accent-color: var(--p4-color-black);
  margin: 0;
}

.p4-legend__swatch {
  width: 14px;
  height: 10px;
  background: currentcolor;
}

.p4-legend__item--line {
  color: var(--p4-color-line-box);
}

.p4-legend__item--content {
  color: var(--p4-color-content-box);
}

.p4-legend__item--ink {
  color: var(--p4-color-ink-box);
}

.p4-legend__item--baseline {
  color: var(--p4-color-baseline);
}