Scheda prezzi con effetto inclinazione 3D e anello energetico

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13 June 2025

<div class="card-container" id="cardContainer">
    <canvas id="energy-canvas"></canvas>
    <div class="card" data-tilt data-tilt-max="10" data-tilt-speed="400" data-tilt-perspective="1000" data-tilt-glare data-tilt-max-glare="0.2">
        <h2 class="card-title">Nova Tier Access</h2>
        <p class="card-price">
            <span class="currency">$</span>39<span class="text-3xl align-baseline">.99</span>
            <span class="period">/cycle</span>
        </p>
        <p class="card-description">
            Ignite your potential with the Nova Tier. Experience unparalleled access and cosmic-grade features.
        </p>
        <ul class="features-list">
            <li>
                <svg class="rotating-disc-svg" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
                    <circle cx="12" cy="12" r="8"/>
                </svg>
                Hyper-Dimensional Storage
            </li>
            <li>
                <svg class="rotating-disc-svg" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
                    <circle cx="12" cy="12" r="8"/>
                </svg>
                Quantum Entangled Support
            </li>
            <li>
                <svg class="rotating-disc-svg" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
                    <circle cx="12" cy="12" r="8"/>
                </svg>
                Nebula Streaming (4K)
            </li>
            <li>
                <svg class="rotating-disc-svg" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
                    <circle cx="12" cy="12" r="8"/>
                </svg>
                Celestial Analytics Suite
            </li>
            <li>
                <svg class="rotating-disc-svg" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
                    <circle cx="12" cy="12" r="8"/>
                </svg>
                Zero-G Feature Previews
            </li>
        </ul>
        <button class="cta-button">Ascend to Nova</button>
    </div>
</div>

.rotating-disc-svg {
        width: 20px;
        height: 20px;
        margin-right: 12px;
        animation: spin 3s linear infinite;
    }
    .rotating-disc-svg circle {
        stroke: #FDBA74;
        stroke-width: 2;
        stroke-dasharray: 10 5;
    }

@keyframes spin {
        from {
            transform: rotate(0deg);
        }
        to {
            transform: rotate(360deg);
        }
    }

.cta-button {
        background-color: rgba(255, 150, 80, 0.25);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        color: #FFFFFF;
        font-weight: 600;
        font-size: 1rem;
        padding: 14px 0;
        width: 100%;
        border: 1px solid rgba(255, 190, 120, 0.3);
        border-radius: 20px;
        cursor: pointer;
        transition: all 0.3s ease;
        box-shadow: 0 5px 15px rgba(255, 100, 0, 0.25);
        text-transform: uppercase;
        letter-spacing: 0.5px;
        transform: translateZ(20px);
    }
    .cta-button:hover {
        background-color: rgba(255, 160, 90, 0.40);
        border-color: rgba(255, 200, 140, 0.4);
        transform: translateY(-2px) scale(1.02) translateZ(20px);
        box-shadow: 0 7px 20px rgba(255, 100, 0, 0.35);
    }
    .cta-button:active {
        transform: translateY(-1px) scale(0.98) translateZ(20px);
        background-color: rgba(255, 140, 70, 0.45);
    }

#energy-canvas {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        z-index: 0;
        pointer-events: none;
    }
    @import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');
</style>

let scene, camera, renderer, fieryBandMesh;
    let uniforms;
    let material;

const cardContainer = document.getElementById('cardContainer');
    const canvas = document.getElementById('energy-canvas');

const bandVertexShader = `
        uniform float time;
        varying vec2 vUv;
        varying vec3 vPosition;
        
        float noise(vec2 p) {
            return fract(sin(dot(p, vec2(12.9898, 78.233))) * 43758.5453);
        }
        
        void main() {
            vUv = uv;
            vPosition = position;
            
            vec3 newPosition = position;
            
            float distortionAmount = 0.02; 
            float distortion = noise(vec2(position.x * 0.05 + time * 0.1, position.y * 0.05 - time * 0.15)) * distortionAmount;
            
            vec2 normalizedPos = normalize(position.xy);
            newPosition.x += normalizedPos.x * distortion;
            newPosition.y += normalizedPos.y * distortion;
            
            gl_Position = projectionMatrix * modelViewMatrix * vec4(newPosition, 1.0);
        }
    `;

const fieryBandFragmentShader = `
        uniform float time;
        uniform vec3 fireColorBase;
        uniform vec3 fireColorHot;
        uniform vec3 fireColorCool;
        varying vec2 vUv;
        varying vec3 vPosition;

float random(vec2 st) {
            return fract(sin(dot(st.xy, vec2(12.9898, 78.233))) * 43758.5453123);
        }
        
        float noise(vec2 st) {
            vec2 i = floor(st);
            vec2 f = fract(st);
            
            float a = random(i);
            float b = random(i + vec2(1.0, 0.0));
            float c = random(i + vec2(0.0, 1.0));
            float d = random(i + vec2(1.0, 1.0));
            
            vec2 u = f * f * (3.0 - 2.0 * f);
            
            return mix(a, b, u.x) + (c - a) * u.y * (1.0 - u.x) + (d - b) * u.x * u.y;
        }
        
        float turbulence(vec2 st, float baseFreq, int octaves) {
            float value = 0.0;
            float amplitude = 1.0;
            float frequency = baseFreq;
            
            for (int i = 0; i < octaves; i++) {
                value += amplitude * abs(noise(st * frequency));
                st = st * 1.4 + vec2(3.2, 1.7); 
                frequency *= 2.0;
                amplitude *= 0.5;
            }
            
            return value;
        }

void main() {
            float slowTime = time * 0.4;
            float mediumTime = time * 0.8;
            float fastTime = time * 1.6;
            
            vec2 centeredUv = vUv - vec2(0.5);
            float angle = atan(centeredUv.y, centeredUv.x);
            float normalizedAngle = (angle / (2.0 * 3.14159)) + 0.5;
            float radius = length(centeredUv) * 2.0;
            
            
            float flowSpeed = 2.0;
            float flowFrequency = 3.0;
            float baseFlow = sin(normalizedAngle * flowFrequency * 6.28318 + mediumTime * flowSpeed);
            baseFlow = baseFlow * 0.5 + 0.5; 
            
            vec2 noiseCoord1 = vec2(
                normalizedAngle * 8.0 + mediumTime * 0.3,
                vUv.y * 4.0 - mediumTime * 0.4
            );
            float fireDetail1 = turbulence(noiseCoord1, 1.0, 4);
            
            vec2 noiseCoord2 = vec2(
                normalizedAngle * 6.0 - mediumTime * 0.5,
                vUv.y * 3.0 + mediumTime * 0.3
            );
            float fireDetail2 = turbulence(noiseCoord2, 1.5, 3);
            
            vec2 emberCoord = vec2(
                normalizedAngle * 10.0,
                mod(vUv.y * 3.0 - fastTime * 0.5, 3.0)
            );
            float embers = noise(emberCoord * 8.0);
            embers = pow(embers, 3.0) * smoothstep(0.4, 0.6, vUv.y);
            
            float widthModulation = 1.0 - pow(abs(vUv.y - 0.5) * 1.8, 2.0);
            widthModulation = clamp(widthModulation, 0.3, 1.0);
            
            float mainFlicker = 0.92 + 0.08 * sin(fastTime * 7.7);
            float microFlicker = 0.95 + 0.05 * sin(fastTime * 30.0) * sin(fastTime * 17.3);
            float combinedFlicker = mainFlicker * microFlicker;
            
            float fireDetail = fireDetail1 * 0.6 + fireDetail2 * 0.4;
            fireDetail = pow(fireDetail, 1.2); 
            
            float baseIntensity = 0.7 + 0.3 * baseFlow;
            float turbulentIntensity = baseIntensity * fireDetail * widthModulation * combinedFlicker;
            
            float fineDetail = noise(noiseCoord1 * 3.0 + fastTime * 0.1) * 0.2;
            turbulentIntensity += fineDetail * widthModulation;
            
            turbulentIntensity += embers * 0.2;
            
            float finalIntensity = smoothstep(0.1, 0.9, turbulentIntensity);
            
            vec3 deepRed = vec3(0.7, 0.05, 0.01);    
            vec3 midOrange = fireColorBase;          
            vec3 brightYellow = vec3(1.0, 0.9, 0.3);   
            vec3 hotWhite = vec3(1.0, 1.0, 0.95);    
            
            vec3 finalColor;
            
            if (finalIntensity < 0.3) {
                float t = finalIntensity / 0.3;
                finalColor = mix(deepRed, midOrange, t);
            } 
            else if (finalIntensity < 0.7) {
                float t = (finalIntensity - 0.3) / 0.4;
                finalColor = mix(midOrange, brightYellow, t);
            }
            else {
                float t = (finalIntensity - 0.7) / 0.3;
                finalColor = mix(brightYellow, hotWhite, t);
            }
            
            float blueHint = pow(finalIntensity, 5.0) * 0.1;
            finalColor = mix(finalColor, vec3(0.7, 0.8, 1.0), blueHint);
            
            float alpha = finalIntensity * 2.0; 
            alpha = clamp(alpha, 0.0, 1.0);
            
            gl_FragColor = vec4(finalColor, alpha);
        }
    `;

function initThree() {
        log("Initializing Three.js");
        
        scene = new THREE.Scene();
        log("Scene created");
        
        camera = new THREE.OrthographicCamera(-1000, 1000, 1000, -1000, 0.1, 2000);
        camera.position.z = 100; 
        log("Camera created");

try {
            renderer = new THREE.WebGLRenderer({ 
                canvas: canvas, 
                alpha: true, 
                antialias: true 
            });
            
            renderer.setSize(800, 800); 
            log("Renderer created and sized to 800x800");
            
            uniforms = {
                time: { value: 0.0 },
                fireColorBase: { value: new THREE.Color(0xff6600) }, 
                fireColorHot: { value: new THREE.Color(0xffffaa) },  
                fireColorCool: { value: new THREE.Color(0xcc2200) }  
            };
            
            material = new THREE.ShaderMaterial({
                vertexShader: bandVertexShader,
                fragmentShader: fieryBandFragmentShader,
                uniforms: uniforms,
                transparent: true,
                blending: THREE.AdditiveBlending, 
                depthWrite: false, 
                depthTest: false,  
                side: THREE.DoubleSide 
            });
            log("Material created with shader");
            
            const placeHolderGeometry = new THREE.PlaneGeometry(50, 50); 
            fieryBandMesh = new THREE.Mesh(placeHolderGeometry, material);
            scene.add(fieryBandMesh);
            log("Initial mesh created and added to scene");
            
            createRingGeometry(); 
            
            animate();
            log("Animation started");
        } catch (error) {
            warn("Error in Three.js initialization:", error);
            const ctx = canvas.getContext('2d');
            if (ctx) {
                ctx.fillStyle = 'red';
                ctx.font = '16px Arial';
                ctx.fillText('Error initializing 3D graphics.', 10, 50);
            }
        }
    }

function createRingGeometry() {
        log("Creating ring geometry...");
        
        try {
            const cardRect = cardContainer.getBoundingClientRect(); 
            const cardWidth = cardRect.width;
            const cardHeight = cardRect.height;

if (cardWidth === 0 || cardHeight === 0) {
                warn("Card dimensions are zero. Retrying geometry creation shortly or check layout.");
                return; 
            }
            log("Card dimensions (px):", cardWidth, cardHeight);
            
            const gap = 10;          
            const ringThickness = 20;   
            const cornerRadius = 24;    
            
            const outerWidth = cardWidth + 2 * (gap + ringThickness);
            const outerHeight = cardHeight + 2 * (gap + ringThickness);
            const outerRadius = cornerRadius + gap + ringThickness;
            
            const innerWidth = cardWidth + 2 * gap;
            const innerHeight = cardHeight + 2 * gap;
            const innerRadius = cornerRadius + gap;
            
            log("Ring dimensions:", {
                outerWidth, outerHeight, outerRadius,
                innerWidth, innerHeight, innerRadius
            });

const canvasPadding = 40; 
            const canvasWidth = outerWidth + canvasPadding;
            const canvasHeight = outerHeight + canvasPadding;
            
            if (renderer) { 
                renderer.setSize(canvasWidth, canvasHeight);
                log("Canvas sized to:", canvasWidth, canvasHeight);
            }

if (camera) { 
                camera.left = -canvasWidth / 2;
                camera.right = canvasWidth / 2;
                camera.top = canvasHeight / 2;
                camera.bottom = -canvasHeight / 2;
                camera.updateProjectionMatrix();
                log("Camera projection updated");
            }
            
            if (fieryBandMesh && fieryBandMesh.geometry) {
                fieryBandMesh.geometry.dispose();
            }
            
            const outerShape = new THREE.Shape();
            outerShape.moveTo(-outerWidth/2 + outerRadius, -outerHeight/2); 
            outerShape.lineTo(outerWidth/2 - outerRadius, -outerHeight/2);  
            outerShape.quadraticCurveTo(outerWidth/2, -outerHeight/2, outerWidth/2, -outerHeight/2 + outerRadius); 
            outerShape.lineTo(outerWidth/2, outerHeight/2 - outerRadius);   
            outerShape.quadraticCurveTo(outerWidth/2, outerHeight/2, outerWidth/2 - outerRadius, outerHeight/2); 
            outerShape.lineTo(-outerWidth/2 + outerRadius, outerHeight/2);  
            outerShape.quadraticCurveTo(-outerWidth/2, outerHeight/2, -outerWidth/2, outerHeight/2 - outerRadius); 
            outerShape.lineTo(-outerWidth/2, -outerHeight/2 + outerRadius); 
            outerShape.quadraticCurveTo(-outerWidth/2, -outerHeight/2, -outerWidth/2 + outerRadius, -outerHeight/2); 
            
            const innerShapePath = new THREE.Path(); 
            innerShapePath.moveTo(-innerWidth/2 + innerRadius, -innerHeight/2);
            innerShapePath.lineTo(innerWidth/2 - innerRadius, -innerHeight/2);
            innerShapePath.quadraticCurveTo(innerWidth/2, -innerHeight/2, innerWidth/2, -innerHeight/2 + innerRadius);
            innerShapePath.lineTo(innerWidth/2, innerHeight/2 - innerRadius);
            innerShapePath.quadraticCurveTo(innerWidth/2, innerHeight/2, innerWidth/2 - innerRadius, innerHeight/2);
            innerShapePath.lineTo(-innerWidth/2 + innerRadius, innerHeight/2);
            innerShapePath.quadraticCurveTo(-innerWidth/2, innerHeight/2, -innerWidth/2, innerHeight/2 - innerRadius);
            innerShapePath.lineTo(-innerWidth/2, -innerHeight/2 + innerRadius);
            innerShapePath.quadraticCurveTo(-innerWidth/2, -innerHeight/2, -innerWidth/2 + innerRadius, -innerHeight/2);
            
            outerShape.holes.push(innerShapePath);
            log("Shapes with hole created");
            
            const ringGeometry = new THREE.ShapeGeometry(outerShape, 48); 
            log("Geometry created from shape");
            
            if (fieryBandMesh) { 
                fieryBandMesh.geometry = ringGeometry;
                fieryBandMesh.position.set(0, 0, 0); 
            }
            
            log("Ring geometry created successfully");

} catch (error) {
            warn("Error creating ring geometry:", error);
            if (fieryBandMesh) {
                const fallbackRadius = (cardContainer.offsetWidth || 360) / 2 + 15; 
                fieryBandMesh.geometry = new THREE.RingGeometry(fallbackRadius, fallbackRadius + ringThickness, 48);
                log("Created fallback circular ring geometry due to error.");
            }
        }
    }

let resizeTimeout;
    function onWindowResize() {
        clearTimeout(resizeTimeout);
        resizeTimeout = setTimeout(() => {
            log("Window resize detected, recreating ring geometry.");
            createRingGeometry();
        }, 150); 
    }

function init() {
        log("Starting initialization");
        try {
            initThree();
            window.addEventListener('resize', onWindowResize);

if (typeof VanillaTilt !== 'undefined') {
                VanillaTilt.init(document.querySelector(".card"), {
                    max: 10,    
                    speed: 400,   
                    glare: true,   
                    "max-glare": 0.2 
                });
                log("VanillaTilt.js initialized on .card");
            } else {
                warn("VanillaTilt.js not loaded.");
            }

} catch (error) {
            warn("Critical error during initialization:", error);
            if (document.body) {
                 document.body.innerHTML = "<div style='color:red; text-align:center; padding: 20px;'>Error loading visual elements. Please try refreshing.</div>" + document.body.innerHTML;
            } else {
                document.addEventListener('DOMContentLoaded', () => {
                    if(document.body) {
                        document.body.innerHTML = "<div style='color:red; text-align:center; padding: 20px;'>Error loading visual elements. Please try refreshing.</div>" + document.body.innerHTML;
                    }
                });
            }
        }
    }

if (document.readyState === 'complete' || (document.readyState !== 'loading' && !document.documentElement.doScroll)) {
        log("Document already complete, initializing now");
        init();
    } else {
        document.addEventListener('DOMContentLoaded', () => {
            log("DOMContentLoaded fired, initializing.");
            init();
        });
    }
</script>

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