// 平滑滚动效果
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'
            });
        }
    });
});

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

// 页面加载时触发数字动画
window.addEventListener('load', () => {
    const statNumbers = document.querySelectorAll('.stat-number');
    statNumbers.forEach(stat => {
        const text = stat.textContent;
        if (text.includes('%')) {
            const value = parseInt(text);
            stat.textContent = '0%';
            animateValue(stat, 0, value, 2000);
            setTimeout(() => {
                stat.textContent = value + '%';
            }, 2000);
        } else if (text.includes('x')) {
            stat.textContent = '0x';
            setTimeout(() => {
                stat.textContent = text;
            }, 1500);
        } else {
            const value = parseInt(text);
            animateValue(stat, 0, value, 2000);
        }
    });
});

// 滚动时的淡入效果
const observerOptions = {
    threshold: 0.1,
    rootMargin: '0px 0px -100px 0px'
};

const observer = new IntersectionObserver((entries) => {
    entries.forEach(entry => {
        if (entry.isIntersecting) {
            entry.target.classList.add('visible');
        }
    });
}, observerOptions);

// 监听需要动画的元素
document.querySelectorAll('.chart-card, .pricing-card, .testimonial-card').forEach(el => {
    el.style.opacity = '0';
    el.style.transform = 'translateY(30px)';
    observer.observe(el);
});

// 添加visible类的样式
const style = document.createElement('style');
style.textContent = `
    .visible {
        opacity: 1 !important;
        transform: translateY(0) !important;
        transition: opacity 0.6s ease, transform 0.6s ease;
    }
`;
document.head.appendChild(style);

// 导航栏滚动效果
let lastScroll = 0;
const header = document.querySelector('header');

window.addEventListener('scroll', () => {
    const currentScroll = window.pageYOffset;
    
    if (currentScroll > 100) {
        header.style.boxShadow = '0 2px 10px rgba(0,0,0,0.1)';
    } else {
        header.style.boxShadow = 'var(--shadow-sm)';
    }
    
    lastScroll = currentScroll;
});

// 按钮点击效果
document.querySelectorAll('.primary-button, .secondary-button, .pricing-button').forEach(button => {
    button.addEventListener('click', function(e) {
        // 创建涟漪效果
        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);
    });
});

// 添加涟漪效果样式
const rippleStyle = document.createElement('style');
rippleStyle.textContent = `
    .primary-button, .secondary-button, .pricing-button {
        position: relative;
        overflow: hidden;
    }
    
    .ripple {
        position: absolute;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.5);
        transform: scale(0);
        animation: ripple-animation 0.6s ease-out;
    }
    
    @keyframes ripple-animation {
        to {
            transform: scale(4);
            opacity: 0;
        }
    }
`;
document.head.appendChild(rippleStyle);

// 表格行悬停效果
document.querySelectorAll('tbody tr').forEach(row => {
    row.addEventListener('mouseenter', function() {
        this.style.transform = 'scale(1.02)';
        this.style.transition = 'transform 0.3s ease';
    });
    
    row.addEventListener('mouseleave', function() {
        this.style.transform = 'scale(1)';
    });
});

// 加载进度条动画
window.addEventListener('load', () => {
    const bars = document.querySelectorAll('.bar');
    bars.forEach(bar => {
        const width = bar.style.width;
        bar.style.width = '0';
        setTimeout(() => {
            bar.style.width = width;
        }, 500);
    });
});

// 演示画廊交互
const galleryItems = document.querySelectorAll('.gallery-item');
const prevBtn = document.querySelector('.demo-nav.prev');
const nextBtn = document.querySelector('.demo-nav.next');
let currentIndex = 0;

function updateGallery(index) {
    galleryItems.forEach((item, i) => {
        item.classList.toggle('active', i === index);
    });
}

if (prevBtn && nextBtn) {
    prevBtn.addEventListener('click', () => {
        currentIndex = (currentIndex - 1 + galleryItems.length) % galleryItems.length;
        updateGallery(currentIndex);
    });

    nextBtn.addEventListener('click', () => {
        currentIndex = (currentIndex + 1) % galleryItems.length;
        updateGallery(currentIndex);
    });
}

galleryItems.forEach((item, index) => {
    item.addEventListener('click', () => {
        currentIndex = index;
        updateGallery(currentIndex);
    });
});