/* Info controls reserve their space before enhancement; opening never reflows cards. */
.ac-material-page .ac-spec-help-button {
  display: inline-flex;
  flex: 0 0 28px;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  margin: -3px 0;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 50%;
  background: transparent;
  color: var(--ac-muted, #a4b2c1);
  font: inherit;
  vertical-align: middle;
  cursor: pointer;
  visibility: hidden;
  transition: color .15s, background-color .15s, border-color .15s;
}

.ac-material-page .ac-spec-help-button[data-spec-help-ready] {
  visibility: visible;
}

.ac-material-page .ac-spec-help-button > .ac-icon {
  width: 16px;
  height: 16px;
  flex: 0 0 16px;
  margin: 0;
}

.ac-material-page .ac-spec-help-button:hover,
.ac-material-page .ac-spec-help-button[aria-expanded="true"] {
  color: var(--ac-text, #e8edf2);
  background: #ffffff08;
  border-color: var(--ac-border, #2c3742);
}

.ac-material-page .ac-spec-help-button:focus-visible {
  outline: 2px solid var(--ac-accent, #d42b32);
  outline-offset: 2px;
}

.ac-material-page .ac-spec-tile dt,
.ac-material-page .ac-spec-row dt {
  gap: 7px;
}

.ac-material-page .ac-spec-tile dt > span,
.ac-material-page .ac-spec-row dt > span {
  flex: 1;
  min-width: 0;
  overflow-wrap: anywhere;
}

.ac-spec-help-popover {
  position: fixed;
  z-index: 2100;
  box-sizing: border-box;
  width: min(330px, calc(100vw - 32px));
  max-height: calc(100vh - 32px);
  max-height: calc(100dvh - 32px);
  overflow: auto;
  overscroll-behavior: contain;
  padding: 16px 18px;
  border: 1px solid var(--ac-border, #2c3742);
  border-radius: 12px;
  background: var(--ac-panel, #172029);
  box-shadow: 0 12px 36px #0005;
  color: var(--ac-text, #e8edf2);
  font-family: inherit;
  text-align: left;
  overflow-wrap: anywhere;
  animation: ac-spec-help-in .13s ease-out;
}

.ac-spec-help-popover[hidden] {
  display: none;
}

.ac-spec-help-popover strong {
  display: block;
  margin-bottom: 7px;
  font-size: 15px;
  line-height: 1.4;
  font-weight: 600;
}

.ac-spec-help-popover p {
  margin: 0;
  color: var(--ac-muted, #a4b2c1);
  font-size: 14px;
  line-height: 1.65;
}

@keyframes ac-spec-help-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .ac-spec-help-popover { animation: none; }
  .ac-material-page .ac-spec-help-button { transition: none; }
}