html { scrollbar-gutter: stable; }
html.demo-open { overflow: hidden; }
.open-demo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 9px 14px;
  border-radius: 8px;
  color: var(--on-accent);
  background: var(--accent);
  border-color: var(--accent);
  font-size: 12px;
  font-weight: 500;
  transition: background .18s ease, border-color .18s ease;
}
.open-demo:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.open-demo span { margin-left: 0; font-size: 16px; line-height: 1; }
.demo-modal {
  width: min(1180px, calc(100% - 48px));
  max-width: none;
  max-height: calc(100dvh - 48px);
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--page);
  color: var(--text);
  overflow: auto;
  overscroll-behavior: contain;
  box-shadow: 0 20px 70px #17182b33;
}
.demo-modal::backdrop { background: #191a2a99; backdrop-filter: blur(3px); }
.demo-modal[open] { animation: modal-enter .18s ease-out; }
.modal-toolbar {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  justify-content: flex-end;
  padding: 10px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.modal-close {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 13px;
  border-radius: 8px;
  font-size: 12px;
  background: var(--surface);
}
.modal-close span { font-size: 21px; line-height: 1; }
.demo-modal .demo-panel { border-top: 0; }
@keyframes modal-enter {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (max-width: 700px) {
  .demo-modal { width: calc(100% - 20px); max-height: calc(100dvh - 20px); border-radius: 12px; }
  .modal-toolbar { padding: 8px 12px; }
}
@media (prefers-reduced-motion: reduce) {
  .demo-modal[open] { animation: none; }
  .open-demo { transition: none; }
}