.demo {
  background: var(--q-surface);
  border-top: 1px solid var(--q-stroke);
  border-bottom: 1px solid var(--q-stroke);
}

.demo .container {
  max-width: 960px;
}

.demo-header {
  margin-bottom: var(--space-2xl);
}

.demo-header h2 {
  margin-bottom: var(--space-sm);
}

.demo-editor-wrapper {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--q-stroke);
  background: var(--q-surface-alt);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.25);
}

.demo-editor-frame {
  width: 100%;
  height: 520px;
  border: none;
  display: block;
}

.demo-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 520px;
  color: var(--q-text-secondary);
  gap: var(--space-sm);
  font-size: var(--text-caption);
}

.demo-footer {
  text-align: center;
  margin-top: var(--space-2xl);
}

.demo-footer p {
  font-size: var(--text-caption);
  margin: 0 auto var(--space-md);
}

@media (max-width: 768px) {
  .demo-editor-frame,
  .demo-placeholder {
    height: 380px;
  }
}