Make a ridgid body move in the direction the camera is facing

So what I am trying to do is when I press foreword the player(a ridgidbody sphere) moves in the direction the camera is facing. Think something like marble blast ultra.

Player Code(Movement)

 using UnityEngine;
 using UnityEngine.UI;
 using System.Collections;
 
 public class PlayerController : MonoBehaviour {
 public float speed;
     
     private Rigidbody rb;
     
     void Start ()
     {
         rb = GetComponent<Rigidbody>();
     }
     
     void FixedUpdate ()
     {
         float moveHorizontal = Input.GetAxis ("Horizontal");
         float moveVertical = Input.GetAxis ("Vertical");
         
         Vector3 movement = new Vector3 (moveHorizontal, 0.0f, moveVertical);
         
         rb.AddForce (movement * speed);
     }
 }

Camera Code

 using UnityEngine;
 using System.Collections;
 
 public class CameraController : MonoBehaviour {
     public float turnSpeed;
     public GameObject player;
 
     public float height = 1f;
     public float distance = 2f;
 
     private Vector3 offset;
 
     void Start(){
         offset = new Vector3 (0, height, distance);
 
     }
     void LateUpdate(){
         offset = Quaternion.AngleAxis(Input.GetAxis("Mouse X") * turnSpeed, Vector3.up) * offset;
         transform.position = player.transform.position + offset;
         transform.LookAt(player.transform.position);
     }
 }
 

Thanks!