3D Animated Blob Interactive Background

<div class="w-full h-full min-h-screen bg-white">
  <style>.blob-container {
      width: 100%;
      height: 100%;
      min-height: 100vh;
      position: relative;
      overflow: hidden;
    }
    .blob-canvas {
      display: block;
      width: 100%;
      height: 100%;
    }</style>
  <div id="blobContainer" class="blob-container"></div>
  <script type="importmap">{
      "imports": {
        "three": "https://cdn.jsdelivr.net/npm/three@0.160.0/build/three.module.js"
      }
    }</script>
  <script type="module">import * as THREE from 'three';
    
    const vertexShader = `
      uniform float u_intensity;
      uniform float u_time;
      
      varying vec2 vUv;
      varying float vDisplacement;
      
      vec4 permute(vec4 x) {
        return mod(((x*34.0)+1.0)*x, 289.0);
      }
      
      vec4 taylorInvSqrt(vec4 r) {
        return 1.79284291400159 - 0.85373472095314 * r;
      }
      
      vec3 fade(vec3 t) {
        return t*t*t*(t*(t*6.0-15.0)+10.0);
      }
      
      float cnoise(vec3 P) {
        vec3 Pi0 = floor(P);
        vec3 Pi1 = Pi0 + vec3(1.0);
        Pi0 = mod(Pi0, 289.0);
        Pi1 = mod(Pi1, 289.0);
        vec3 Pf0 = fract(P);
        vec3 Pf1 = Pf0 - vec3(1.0);
        vec4 ix = vec4(Pi0.x, Pi1.x, Pi0.x, Pi1.x);
        vec4 iy = vec4(Pi0.yy, Pi1.yy);
        vec4 iz0 = Pi0.zzzz;
        vec4 iz1 = Pi1.zzzz;
        
        vec4 ixy = permute(permute(ix) + iy);
        vec4 ixy0 = permute(ixy + iz0);
        vec4 ixy1 = permute(ixy + iz1);
        
        vec4 gx0 = ixy0 / 7.0;
        vec4 gy0 = fract(floor(gx0) / 7.0) - 0.5;
        gx0 = fract(gx0);
        vec4 gz0 = vec4(0.5) - abs(gx0) - abs(gy0);
        vec4 sz0 = step(gz0, vec4(0.0));
        gx0 -= sz0 * (step(0.0, gx0) - 0.5);
        gy0 -= sz0 * (step(0.0, gy0) - 0.5);
        
        vec4 gx1 = ixy1 / 7.0;
        vec4 gy1 = fract(floor(gx1) / 7.0) - 0.5;
        gx1 = fract(gx1);
        vec4 gz1 = vec4(0.5) - abs(gx1) - abs(gy1);
        vec4 sz1 = step(gz1, vec4(0.0));
        gx1 -= sz1 * (step(0.0, gx1) - 0.5);
        gy1 -= sz1 * (step(0.0, gy1) - 0.5);
        
        vec3 g000 = vec3(gx0.x,gy0.x,gz0.x);
        vec3 g100 = vec3(gx0.y,gy0.y,gz0.y);
        vec3 g010 = vec3(gx0.z,gy0.z,gz0.z);
        vec3 g110 = vec3(gx0.w,gy0.w,gz0.w);
        vec3 g001 = vec3(gx1.x,gy1.x,gz1.x);
        vec3 g101 = vec3(gx1.y,gy1.y,gz1.y);
        vec3 g011 = vec3(gx1.z,gy1.z,gz1.z);
        vec3 g111 = vec3(gx1.w,gy1.w,gz1.w);
        
        vec4 norm0 = taylorInvSqrt(vec4(dot(g000, g000), dot(g010, g010), dot(g100, g100), dot(g110, g110)));
        g000 *= norm0.x;
        g010 *= norm0.y;
        g100 *= norm0.z;
        g110 *= norm0.w;
        vec4 norm1 = taylorInvSqrt(vec4(dot(g001, g001), dot(g011, g011), dot(g101, g101), dot(g111, g111)));
        g001 *= norm1.x;
        g011 *= norm1.y;
        g101 *= norm1.z;
        g111 *= norm1.w;
        
        float n000 = dot(g000, Pf0);
        float n100 = dot(g100, vec3(Pf1.x, Pf0.yz));
        float n010 = dot(g010, vec3(Pf0.x, Pf1.y, Pf0.z));
        float n110 = dot(g110, vec3(Pf1.xy, Pf0.z));
        float n001 = dot(g001, vec3(Pf0.xy, Pf1.z));
        float n101 = dot(g101, vec3(Pf1.x, Pf0.y, Pf1.z));
        float n011 = dot(g011, vec3(Pf0.x, Pf1.yz));
        float n111 = dot(g111, Pf1);
        
        vec3 fade_xyz = fade(Pf0);
        vec4 n_z = mix(vec4(n000, n100, n010, n110), vec4(n001, n101, n011, n111), fade_xyz.z);
        vec2 n_yz = mix(n_z.xy, n_z.zw, fade_xyz.y);
        float n_xyz = mix(n_yz.x, n_yz.y, fade_xyz.x);
        return 2.2 * n_xyz;
      }
      
      void main() {
        vUv = uv;
        vDisplacement = cnoise(position + vec3(2.0 * u_time));
        vec3 newPosition = position + normal * (u_intensity * vDisplacement);
        vec4 modelPosition = modelMatrix * vec4(newPosition, 1.0);
        vec4 viewPosition = viewMatrix * modelPosition;
        vec4 projectedPosition = projectionMatrix * viewPosition;
        gl_Position = projectedPosition;
      }
    `;
    
    const fragmentShader = `
      uniform float u_intensity;
      uniform float u_time;
      uniform vec3 u_color;
      
      varying vec2 vUv;
      varying float vDisplacement;
      
      void main() {
        float distort = 2.0 * vDisplacement * u_intensity * sin(vUv.y * 10.0 + u_time);
        vec3 color = mix(u_color, vec3(1.0, 1.0, 1.0), distort);
        gl_FragColor = vec4(color, 1.0);
      }
    `;
    
    const container = document.getElementById('blobContainer');
    const width = container.clientWidth;
    const height = container.clientHeight;
    
    // Configuration
    const config = {
      blobColor: '#000000',
      backgroundColor: '#ffffff',
      scale: 1.5,
      speed: 0.4,
      intensity: 0.5,
      followMouse: true,
      cameraZ: 8
    };
    
    // Scene
    const scene = new THREE.Scene();
    
    // Camera
    const camera = new THREE.PerspectiveCamera(75, width / height, 0.1, 1000);
    camera.position.z = config.cameraZ;
    
    // Renderer
    const renderer = new THREE.WebGLRenderer({ antialias: true, alpha: true });
    renderer.setSize(width, height);
    renderer.setPixelRatio(Math.min(window.devicePixelRatio, 2));
    renderer.setClearColor(config.backgroundColor, 1);
    container.appendChild(renderer.domElement);
    
    // Uniforms
    const uniforms = {
      u_time: { value: 0 },
      u_intensity: { value: config.intensity },
      u_color: { value: new THREE.Color(config.blobColor) }
    };
    
    // Geometry & Material
    const geometry = new THREE.IcosahedronGeometry(2, 20);
    const material = new THREE.ShaderMaterial({
      vertexShader,
      fragmentShader,
      uniforms
    });
    
    // Mesh
    const mesh = new THREE.Mesh(geometry, material);
    mesh.scale.setScalar(config.scale);
    scene.add(mesh);
    
    // Mouse tracking
    const mouse = new THREE.Vector2(0, 0);
    const targetPos = new THREE.Vector3(0, 0, 0);
    const currentPos = new THREE.Vector3(0, 0, 0);
    
    const handleMouseMove = (event) => {
      const rect = container.getBoundingClientRect();
      mouse.x = ((event.clientX - rect.left) / rect.width) * 2 - 1;
      mouse.y = -((event.clientY - rect.top) / rect.height) * 2 + 1;
    };
    
    container.addEventListener('mousemove', handleMouseMove);
    
    // Clock
    const clock = new THREE.Clock();
    
    // Animation
    function animate() {
      requestAnimationFrame(animate);
      
      const elapsed = clock.getElapsedTime();
      uniforms.u_time.value = config.speed * elapsed;
      
      if (config.followMouse) {
        targetPos.set(mouse.x * 2, mouse.y * 2, 0);
        currentPos.lerp(targetPos, 0.1);
        mesh.position.copy(currentPos);
      }
      
      renderer.render(scene, camera);
    }
    
    animate();
    
    // Resize handler
    const handleResize = () => {
      const w = container.clientWidth;
      const h = container.clientHeight;
      camera.aspect = w / h;
      camera.updateProjectionMatrix();
      renderer.setSize(w, h);
    };
    
    window.addEventListener('resize', handleResize);</script>
</div>