body.has-demo-nav {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: stretch;
  padding: 0;
  min-height: 100vh;
}

.demo-nav {
  width: 100%;
  flex-shrink: 0;
  background: #fff;
  border-bottom: 2px solid #eee;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-sizing: border-box;
}

.demo-nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem;
  display: flex;
  align-items: center;
}

.demo-nav-back {
  color: #e60073;
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  transition: color 0.3s;
}

.demo-nav-back:hover {
  color: #e60073;
  opacity: 0.75;
}

.demo-content {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  padding: 2rem 1rem;
  box-sizing: border-box;
}

@media (min-width: 1200px) {
  .demo-nav-inner {
    max-width: 1400px;
    padding: 0.5rem;
  }
}

@media (max-width: 600px) {
  .demo-nav-inner {
    padding: 1rem;
  }
}