/**
 * Larmor-adjacent field rhythm — outline pulse ~1.726s (2×863ms half-period).
 * Native caret blink remains UA-controlled; this gives peripheral timing cue.
 */
@keyframes p31-larmor-field-glow {
  0%,
  100% {
    box-shadow: 0 0 0 1px rgba(77, 184, 168, 0.35);
  }
  50% {
    box-shadow: 0 0 0 1px rgba(77, 184, 168, 0.12);
  }
}

textarea.p31-larmor-field:focus,
input.p31-larmor-field:focus,
[contenteditable="true"].p31-larmor-field:focus {
  outline: none;
  animation: p31-larmor-field-glow 1.726s ease-in-out infinite;
}

@media (prefers-reduced-motion: reduce) {
  textarea.p31-larmor-field:focus,
  input.p31-larmor-field:focus,
  [contenteditable="true"].p31-larmor-field:focus {
    animation: none;
    box-shadow: 0 0 0 1px rgba(77, 184, 168, 0.22);
  }
}