using UnityEngine;

public class BgFit : MonoBehaviour
{
    void Start()
    {
        SpriteRenderer sr = GetComponent<SpriteRenderer>();
        if (sr == null) return;

        float width = sr.bounds.size.x;
        float height = sr.bounds.size.y;

        float worldHeight = Camera.main.orthographicSize * 2f;
        float worldWidth = worldHeight * Screen.width / Screen.height;

        transform.localScale = new Vector3(
            worldWidth / width,
            worldHeight / height,
            1);
    }
}