// 导航栏滚动效果
window.addEventListener('scroll', () => {
    const header = document.querySelector('.header');
    if (window.scrollY > 50) {
        header.style.backgroundColor = 'rgba(255, 255, 255, 0.95)';
    } else {
        header.style.backgroundColor = '#fff';
    }
});

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

// 表单提交处理
const contactForm = document.querySelector('.contact-form');
if (contactForm) {
    contactForm.addEventListener('submit', (e) => {
        e.preventDefault();
        
        // 获取表单数据
        const formData = new FormData(contactForm);
        const data = Object.fromEntries(formData);
        
        // 这里可以添加表单验证逻辑
        
        // 模拟表单提交
        alert('感谢您的留言！我们会尽快与您联系。');
        contactForm.reset();
    });
}

// 价格方案卡片悬停效果
const pricingCards = document.querySelectorAll('.pricing-card');
pricingCards.forEach(card => {
    card.addEventListener('mouseenter', () => {
        if (!card.classList.contains('featured')) {
            card.style.transform = 'translateY(-10px)';
        }
    });
    
    card.addEventListener('mouseleave', () => {
        if (!card.classList.contains('featured')) {
            card.style.transform = 'translateY(0)';
        }
    });
});

// 添加页面加载动画
document.addEventListener('DOMContentLoaded', () => {
    const elements = document.querySelectorAll('.hero-content, .feature-card, .security-content, .pricing-card');
    elements.forEach((element, index) => {
        setTimeout(() => {
            element.style.opacity = '1';
            element.style.transform = 'translateY(0)';
        }, index * 200);
    });
});

// 初始化页面元素的样式
const initElements = () => {
    const elements = document.querySelectorAll('.hero-content, .feature-card, .security-content, .pricing-card');
    elements.forEach(element => {
        element.style.opacity = '0';
        element.style.transform = 'translateY(20px)';
        element.style.transition = 'opacity 0.5s ease, transform 0.5s ease';
    });
};

// 页面加载时初始化
initElements();