script.js

// Smooth scrolling for navigation links
document.querySelectorAll('a[href^="#"]').forEach(anchor => {
    anchor.addEventListener('click', function (e) {
        e.preventDefault();
        const target = document.querySelector(this.getAttribute('href'));
        if (target) {
            target.scrollIntoView({
                behavior: 'smooth',
                block: 'start'
            });
        }
    });
});

// Navbar background on scroll
const navbar = document.querySelector('.navbar');
let lastScroll = 0;

window.addEventListener('scroll', () => {
    const currentScroll = window.pageYOffset;
    
    if (currentScroll > 100) {
        navbar.style.background = 'rgba(10, 14, 39, 0.98)';
    } else {
        navbar.style.background = 'rgba(10, 14, 39, 0.95)';
    }
    
    lastScroll = currentScroll;
});

// Intersection Observer for fade-in animations
const observerOptions = {
    threshold: 0.1,
    rootMargin: '0px 0px -100px 0px'
};

const observer = new IntersectionObserver((entries) => {
    entries.forEach(entry => {
        if (entry.isIntersecting) {
            entry.target.style.opacity = '1';
            entry.target.style.transform = 'translateY(0)';
        }
    });
}, observerOptions);

// Observe feature cards
document.querySelectorAll('.feature-card, .security-item, .step').forEach(el => {
    el.style.opacity = '0';
    el.style.transform = 'translateY(30px)';
    el.style.transition = 'opacity 0.6s ease, transform 0.6s ease';
    observer.observe(el);
});

// Button interactions
document.querySelectorAll('.btn-primary, .btn-secondary').forEach(button => {
    button.addEventListener('click', function(e) {
        // Ripple effect
        const ripple = document.createElement('span');
        const rect = this.getBoundingClientRect();
        const size = Math.max(rect.width, rect.height);
        const x = e.clientX - rect.left - size / 2;
        const y = e.clientY - rect.top - size / 2;
        
        ripple.style.width = ripple.style.height = size + 'px';
        ripple.style.left = x + 'px';
        ripple.style.top = y + 'px';
        ripple.classList.add('ripple');
        
        this.appendChild(ripple);
        
        setTimeout(() => {
            ripple.remove();
        }, 600);
    });
});

// Add ripple effect styles
const style = document.createElement('style');
style.textContent = `
    .btn-primary, .btn-secondary {
        position: relative;
        overflow: hidden;
    }
    
    .ripple {
        position: absolute;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.3);
        transform: scale(0);
        animation: ripple-animation 0.6s ease-out;
        pointer-events: none;
    }
    
    @keyframes ripple-animation {
        to {
            transform: scale(4);
            opacity: 0;
        }
    }
`;
document.head.appendChild(style);

// Parallax effect for hero visual
window.addEventListener('scroll', () => {
    const scrolled = window.pageYOffset;
    const heroVisual = document.querySelector('.hero-visual');
    if (heroVisual && scrolled < window.innerHeight) {
        heroVisual.style.transform = `translateY(${scrolled * 0.3}px)`;
    }
});

// Animate stats on scroll
const statsObserver = new IntersectionObserver((entries) => {
    entries.forEach(entry => {
        if (entry.isIntersecting) {
            const statNumber = entry.target.querySelector('.stat-number');
            const finalValue = statNumber.textContent;
            
            if (finalValue === '100%') {
                animateValue(statNumber, 0, 100, 2000, '%');
            } else if (finalValue === '0') {
                statNumber.textContent = '0';
            } else if (finalValue === '∞') {
                statNumber.textContent = '∞';
            }
        }
    });
}, { threshold: 0.5 });

document.querySelectorAll('.stat').forEach(stat => {
    statsObserver.observe(stat);
});

function animateValue(element, start, end, duration, suffix = '') {
    let startTimestamp = null;
    const step = (timestamp) => {
        if (!startTimestamp) startTimestamp = timestamp;
        const progress = Math.min((timestamp - startTimestamp) / duration, 1);
        const current = Math.floor(progress * (end - start) + start);
        element.textContent = current + suffix;
        if (progress < 1) {
            window.requestAnimationFrame(step);
        }
    };
    window.requestAnimationFrame(step);
}