.chatgpt-measurement {
  position: fixed;
  inset: auto 0 0;
  z-index: 1000;
  color: var(--color-text);
  background: var(--color-bg-paper);
  border-top: 1px solid var(--color-border-warm);
  box-shadow: 0 -2px 10px #1727220c;
  font: .8rem/1.45 var(--font-body);
  max-height: 60vh;
  overflow-y: auto;
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
.chatgpt-measurement-inner {
  max-width: var(--max-width);
  margin-inline: auto;
  padding: .65rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.chatgpt-measurement-copy { flex: 1; min-width: 0; }
.chatgpt-measurement p { margin: 0 0 .2rem; }
.chatgpt-measurement a,
.chatgpt-measurement summary { color: var(--color-accent); text-decoration: underline; text-underline-offset: .18em; }
.chatgpt-measurement a { margin-right: 1rem; }
.chatgpt-measurement details { display: inline; }
.chatgpt-measurement details[open] { display: block; margin-top: .4rem; }
.chatgpt-measurement summary { display: inline; cursor: pointer; }
.chatgpt-measurement-detail { margin-top: .6rem !important; max-width: 65rem; }
.chatgpt-measurement label { display: inline-flex; align-items: center; gap: .4rem; margin: .4rem 1.1rem .2rem 0; }
.chatgpt-measurement input { accent-color: var(--color-accent); }
.chatgpt-measurement-actions { display: flex; flex-shrink: 0; gap: .5rem; }
.chatgpt-measurement button {
  padding: .5rem 1.2rem;
  min-height: 2.5rem;
  min-width: 5.5rem;
  color: var(--color-text);
  background: transparent;
  border: 1px solid var(--color-text);
  border-radius: 0;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.chatgpt-measurement button:hover { background: var(--color-bg-alt); }
.chatgpt-measurement button:disabled { opacity: .5; cursor: not-allowed; }
.chatgpt-measurement button:focus-visible,
.chatgpt-measurement summary:focus-visible,
.chatgpt-measurement-preferences:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 3px; }
.chatgpt-measurement-preferences {
  position: fixed;
  right: .75rem;
  bottom: max(.4rem, env(safe-area-inset-bottom, 0px));
  z-index: 999;
  padding: .2rem .6rem;
  color: var(--color-text-muted);
  background: var(--color-bg-paper);
  border: 1px solid var(--color-border);
  border-radius: 0;
  font: .7rem/1.4 var(--font-body);
  cursor: pointer;
}
body:has(.chatgpt-measurement) .chatgpt-measurement-preferences { display: none; }
@media (max-width: 640px) {
  .chatgpt-measurement-inner { padding: .65rem 1rem; gap: .6rem; flex-wrap: wrap; }
  .chatgpt-measurement-copy { flex-basis: 100%; }
  .chatgpt-measurement-actions { margin-left: auto; }
  .chatgpt-measurement button { min-height: 44px; }
}