Curve shader with lights

Hi, i dont speak english, but, i try.

In this moment i develp curve game, and i fond the curve shader.

But this shader is not affect for lights in game.

need some help.

thanx to all.

 Shader "Custom/Curved" {
     Properties {
         _MainTex ("Base (RGB)", 2D) = "white" {}
         _QOffset ("Offset", Vector) = (0,0,0,0)
         _Dist ("Distance", Float) = 100.0
         _Color ("Color", Color) = (1,1,1,1)
     }
     SubShader {
         Tags { "RenderType"="Opaque" }
             Pass
         {
         
             CGPROGRAM
             
             #pragma vertex vert
             #pragma fragment frag
             #include "UnityCG.cginc"
  
             sampler2D _MainTex;
             float4 _QOffset;
             float _Dist;
                fixed4 _Color;
              
             struct v2f {
                 float4 pos : SV_POSITION;
                 float4 uv : TEXCOORD0;
             };           
                                                 
       
             v2f vert (appdata_base v)
             {
                 v2f o;
                 float4 vPos = mul (UNITY_MATRIX_MV, v.vertex);
                 float zOff = vPos.z/_Dist;
                 vPos += _QOffset*zOff*zOff;
                 o.pos = mul (UNITY_MATRIX_P, vPos);
                 o.uv = mul( UNITY_MATRIX_TEXTURE0, v.texcoord );
                 return o;
             }
              
              half4 frag (v2f i) : COLOR
             {
                    half4 col = tex2D(_MainTex, i.uv.xy) * _Color;
                    return col;
              }
             
             
             ENDCG
         }
     }
     FallBack "Diffuse"
 }