// Keyboard paddle movement (continuous while held)
  function keyboardMove() {
    if (keys['ArrowLeft']) { state.paddle.x -= 8; clampPaddle(); }
    if (keys['ArrowRight']) { state.paddle.x += 8; clampPaddle(); }
  }

  // ---- Main loop ----
  function loop() {
    keyboardMove();
    update();
    draw();
    requestAnimationFrame(loop);
  }

  // Start
  state = newGame();
  initBricks();
  launchBall();
  loop();