// --- Initialization ---
function init() {
    // 1. Scene Setup (Dark, Ambient)
    scene = new THREE.Scene();
    scene.background = new THREE.Color(0x000000); 

    // 2. Camera Setup
    const FOV = 65;
    camera = new THREE.PerspectiveCamera(FOV, window.innerWidth / window.innerHeight, 0.1, 1000);
    camera.position.set(0, 1.5, 4);
    
    // 3. Renderer Setup
    renderer = new THREE.WebGLRenderer({ antialias: true });
    renderer.setSize(window.innerWidth, window.innerHeight);
    renderer.setPixelRatio(window.devicePixelRatio);
    // Enable shadows on the renderer
    renderer.shadowMap.enabled = true;
    renderer.shadowMap.type = THREE.PCFSoftShadowMap; // Softer shadows
    
    container.appendChild(renderer.domElement);

    // 4. Lighting (Minimal and focused)
    const ambientLight = new THREE.AmbientLight(0x111111); 
    scene.add(ambientLight);

    const roomLight = new THREE.PointLight(0xffaa55, 0.05, roomSize); 
    roomLight.position.set(0, 1.8, 0); 
    scene.add(roomLight);

    // 5. Build the entire scene with TV and surrounding objects
    createSceneObjects();

    // 6. Initialize all visual effects via the manager
    effectsManager = new EffectsManager(scene);
    
    // 7. Create the Room Walls and Ceiling
    createRoomWalls();

    // --- 8. Debug Visualization Helpers ---
    // Visual aids for the light source positions
    if (debugLight && THREE.PointLightHelper) {
        const screenHelper = new THREE.PointLightHelper(screenLight, 0.1, 0xff0000); // Red for screen
        scene.add(screenHelper);

        // Lamp Helper will now work since lampLight is added to the scene
        const lampHelperPoint = new THREE.PointLightHelper(lampLightPoint, 0.1, 0x00ff00); // Green for lamp
        scene.add(lampHelperPoint);
    }
    
    // 9. Event Listeners
    window.addEventListener('resize', onWindowResize, false);
    fileInput.addEventListener('change', loadVideoFile); 
    
    // Button logic
    loadTapeButton.addEventListener('click', () => {
        fileInput.click(); 
    });
    
    // Auto-advance to the next video when the current one finishes.
    videoElement.addEventListener('ended', playNextVideo);
    
    // Start the animation loop
    animate();
}

// Start everything on window load
window.onload = init;