body { --accent: var(--orange); }

#pvt-target {
  display: grid;
  place-items: center;
  width: 120px;
  height: 120px;
  border: 4px solid var(--orange);
  border-radius: 50%;
  color: var(--orange);
  font-size: 18px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0;
  transform: scale(0.85);
  transition: opacity 60ms linear, transform 60ms linear;
}

#pvt-target.visible { opacity: 1; transform: scale(1); }
#pvt-target.waiting { opacity: 0.25; border-color: var(--border-bright); color: var(--muted); }

.single-response { grid-template-columns: 1fr; }
.single-response .response-key { width: 100%; }

.pvt-clock {
  min-height: 20px;
  color: var(--orange);
  font-size: 12px;
  text-align: center;
}