#version 3.7;

global_settings {
  assumed_gamma 1.0
  max_trace_level 8
}

background { color rgb <0.06, 0.07, 0.10> }

// --- Sky (sky_sphere supports pigment/normal/finish; not a texture{} wrapper) ---
sky_sphere {
  pigment {
    gradient y
    color_map {
      [0.00 color rgb <0.04, 0.05, 0.08>]
      [0.35 color rgb <0.07, 0.08, 0.12>]
      [0.70 color rgb <0.15, 0.11, 0.16>]
      [1.00 color rgb <0.35, 0.20, 0.22>]
    }
    scale 1
  }
  finish { emission 0 diffuse 0 }
}

camera {
  location  <0.0, 1.55, -5.6>
  look_at   <0.0, 0.65, 0.0>
  angle 42
}

light_source {
  <4.5, 6.5, -6.0>
  color rgb <1.00, 0.92, 0.85>*1.10
  area_light <0.85,0,0>, <0,0.85,0>, 5, 5
  adaptive 1
  jitter
}

light_source {
  <-6.0, 3.0, -2.0>
  color rgb <0.55, 0.70, 1.00>*0.35
}

fog {
  fog_type 2
  distance 26
  color rgb <0.12, 0.12, 0.16>
  fog_alt 0.9
  turbulence 0.08
}

#declare GroundTex =
texture {
  pigment {
    bozo
    color_map {
      [0.00 color rgb <0.09, 0.10, 0.12>]
      [0.55 color rgb <0.06, 0.07, 0.09>]
      [1.00 color rgb <0.03, 0.04, 0.05>]
    }
    scale 0.8
  }
  normal { bumps 0.35 scale 0.15 }
  finish { diffuse 0.85 specular 0.10 roughness 0.06 }
}

plane {
  y, 0
  texture { GroundTex }
}

#declare HillSil =
difference {
  sphere { <0,0.0,0>, 1.0 scale <12,2.4,6> translate <0,0.8,10> }
  plane { y, 0.0 translate <0,0.95,0> }
  texture {
    pigment { color rgb <0.05, 0.06, 0.09> }
    finish { diffuse 0.4 specular 0 }
  }
}

object { HillSil }

#declare MoodBall =
sphere {
  <0, 0.75, 0>, 0.75
  texture {
    pigment { color rgb <0.18, 0.20, 0.26> }
    normal { wrinkles 0.10 scale 0.25 }
    finish {
      diffuse 0.15
      specular 0.85
      roughness 0.02
      reflection 0.22
      conserve_energy
    }
  }
}

object { MoodBall }

#declare BeamMedia =
media {
  scattering { 1, rgb <0.22, 0.23, 0.28>*0.25 }
  absorption rgb <0.05, 0.05, 0.06>
  density {
    cylindrical
    color_map {
      [0.00 rgb 0.0]
      [0.30 rgb 0.0]
      [0.55 rgb 0.7]
      [1.00 rgb 0.0]
    }
    scale <1.0, 1.0, 1.0>
  }
}

cylinder {
  <4.5, 6.5, -6.0>, <0.2, 0.6, 0.4>, 1.05
  open
  hollow
  texture { pigment { color rgbt 1 } }
  interior { media { BeamMedia } }
  no_shadow
}

#declare SmallPebbleTex =
texture {
  pigment { color rgb <0.06, 0.065, 0.075> }
  finish { diffuse 0.75 specular 0.06 roughness 0.08 }
}

#declare S1 = seed(1234);
#declare S2 = seed(5678);
#declare S3 = seed(91011);

#declare i = 0;
#while (i < 18)
  #declare px = (rand(S1)*2 - 1)*2.8;
  #declare pz = (rand(S2)*2 - 1)*2.0 + 0.7;
  #declare pr = 0.05 + rand(S3)*0.08;
  sphere {
    <px, pr, pz>, pr
    texture { SmallPebbleTex }
  }
  #declare i = i + 1;
#end

// Soft contact shadow / darkening under the ball
disc {
  <0,0.001,0>, y, 1.35, 0
  texture {
    pigment {
      radial
      color_map {
        [0.00 color rgbt <0.00,0.00,0.00, 0.55>]
        [0.35 color rgbt <0.00,0.00,0.00, 0.78>]
        [1.00 color rgbt <0.00,0.00,0.00, 1.00>]
      }
      scale 1.35
    }
    finish { diffuse 0 specular 0 }
  }
  no_shadow
}

// A ring of subtle “thought sparks” orbiting the mood ball
#declare SparkTex =
texture {
  pigment { color rgb <0.75, 0.82, 1.00> }
  finish { emission 0.75 diffuse 0 }
}

#declare S4 = seed(2026);
#declare j = 0;
#while (j < 22)
  #declare a = 2*pi*rand(S4);
  #declare h = (rand(S4)*2 - 1)*0.22;
  #declare rr = 1.05 + rand(S4)*0.18;
  #declare sx = cos(a)*rr;
  #declare sz = sin(a)*rr;
  #declare sr = 0.018 + rand(S4)*0.020;

  sphere {
    <sx, 0.75 + h, sz>, sr
    texture { SparkTex }
    no_shadow
  }
  #declare j = j + 1;
#end

// Distant glow to deepen the imagined mood
sphere {
  <0.0, 2.1, 12.5>, 2.2
  texture {
    pigment { color rgbt <0.85, 0.55, 0.60, 0.92> }
    finish { emission 0.55 diffuse 0 }
  }
  no_shadow
}