.matrix-highlight {
  position: relative;
  z-index: 1;
  outline: 4px solid var(--coral);
  outline-offset: -3px;
  animation: matrix-pulse 1s ease-in-out 3;
}

@keyframes matrix-pulse {
  0%, 100% { transform: scale(1); }
  50% {
    transform: scale(1.12);
    box-shadow: 0 0 0 5px rgb(255 112 82 / 28%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .matrix-highlight { animation: none; }
}