/* ─── Debug overlay — toggle with D key ─────────────────────────────────── */

/* 8px baseline grid */
body.debug {
  background-image: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent calc(var(--sp-1) - 1px),
    rgba(220, 0, 0, 0.06) calc(var(--sp-1) - 1px),
    rgba(220, 0, 0, 0.06) var(--sp-1)
  );
}

/* Container boundary — blue */
body.debug .wrap {
  outline: 1px solid rgba(0, 80, 255, 0.5);
}

/* Sections and intro — green */
body.debug .site-header,
body.debug .intro,
body.debug .section,
body.debug .site-footer {
  outline: 1px solid rgba(0, 180, 60, 0.55);
}

/* Grids and lists — orange dashed */
body.debug .intro-grid,
body.debug .research-list,
body.debug .pub-list,
body.debug .pub,
body.debug .ext-links {
  outline: 1px dashed rgba(255, 120, 0, 0.65);
}

/* Text nodes — purple */
body.debug h1,
body.debug h2,
body.debug h3,
body.debug p {
  outline: 1px solid rgba(160, 0, 200, 0.25);
}

/* Photo */
body.debug .intro-photo img {
  outline: 2px solid rgba(0, 180, 60, 0.6);
  outline-offset: 3px;
}

/* Label in corner */
body.debug::before {
  content: "DEBUG";
  position: fixed;
  bottom: 1rem;
  right: 1rem;
  font-family: "Manrope", monospace;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: rgba(220, 0, 0, 0.6);
  pointer-events: none;
  z-index: 9999;
}