/* Demo iframe wrapper — fullscreen iframe with floating Back-to-demo. */
html, body { margin: 0; padding: 0; height: 100%; background: #f5f7fa; font-family: "Source Sans 3", -apple-system, BlinkMacSystemFont, sans-serif; }

.demo-wrap-bar {
  position: fixed; top: 0; left: 0; right: 0; height: 40px;
  background: #0a0a0a; color: white;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 16px; z-index: 10000;
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}
.demo-wrap-bar a {
  color: white; text-decoration: none; font-size: 13px; font-weight: 500;
  display: inline-flex; align-items: center; gap: 6px;
}
.demo-wrap-bar a:hover { opacity: 0.8; }
.demo-wrap-bar .label { font-size: 12px; color: #b8b8b8; letter-spacing: 0.04em; }

.demo-wrap-frame {
  position: fixed; top: 40px; left: 0;
  width: 100vw;
  height: calc(100vh - 40px);
  border: 0;
  display: block;
  background: white;
}
.demo-wrap-frame.hidden { visibility: hidden; }

/* Subpage variant — non-iframe demo subpages share the same top bar.
   Body content scrolls normally below (not a fixed iframe). */
body.demo-subpage { margin: 0; padding-top: 40px; background: #f5f7fa; color: #1a1a1a;
  font-family: "Source Sans 3", -apple-system, BlinkMacSystemFont, sans-serif; }