void mainImage(out vec4 fragColor, in vec2 fragCoord) {
    vec2 uv = fragCoord.xy / iResolution.xy;
    vec2 p = uv * 2.0 - 1.0;
    p.x *= uAspect;

    vec2 m = uPointer * 2.0 - 1.0;
    m.x *= uAspect;

    float t = iTime;

    float bass = uAudioBass;
    float mid = uAudioMid;
    float high = uAudioHigh;
    float level = uAudioLevel;

    float d = length(p - m);

    vec2 q = p;
    q += uPointerDelta * vec2(uAspect, 1.0) * exp(-d * 4.0) * 20.0;

    float rings = sin(length(q) * (18.0 + bass * 18.0) - t * (4.0 + bass * 8.0));
    rings = smoothstep(0.25, 1.0, rings * 0.5 + 0.5);

    float grid = abs(sin(q.x * (10.0 + mid * 18.0) + t));
    grid *= abs(sin(q.y * (10.0 + high * 24.0) - t));
    grid = smoothstep(0.82, 1.0, grid);

    float core = 0.035 + bass * 0.18;
    float orb = smoothstep(core, 0.0, length(p));
    float mouseGlow = 0.02 / max(d, 0.02);

    vec3 bg = vec3(0.006, 0.01, 0.035);
    vec3 blue = vec3(0.05, 0.25, 1.0);
    vec3 cyan = vec3(0.2, 0.85, 1.0);
    vec3 violet = vec3(0.75, 0.15, 1.0);
    vec3 hot = vec3(1.0, 0.35, 0.8);

    vec3 col = bg;
    col += blue * grid * (0.25 + mid);
    col += cyan * rings * (0.25 + bass);
    col += violet * orb * (0.6 + level * 2.0);
    col += hot * high * smoothstep(0.6, 0.0, length(p));
    col += cyan * mouseGlow * 0.16;

    col *= 1.0 + level * 1.6;
    col = pow(max(col, 0.0), vec3(0.82));

    fragColor = vec4(col, 1.0);
}