@if (!showChat()) {
  <div class="px-4 pt-4 pb-6">
    <app-practice-summary></app-practice-summary>
    <app-practice-stats></app-practice-stats>
    <app-category-filter (categoryChange)="onCategoryChange($event)"></app-category-filter>
    <app-scene-grid [activeCategory]="selectedCategory()" (startPractice)="onStartPractice($event)"></app-scene-grid>
  </div>
} @else {
  <app-chat-interface [sceneId]="currentScene()" [show]="showChat()" (closeChat)="onCloseChat()"></app-chat-interface>
}