// 标签页切换
document.addEventListener('DOMContentLoaded', function() {
    const tabItems = document.querySelectorAll('.tab-item');
    
    tabItems.forEach(item => {
        item.addEventListener('click', function() {
            // 移除所有active状态
            tabItems.forEach(tab => tab.classList.remove('active'));
            // 为当前点击项添加active状态
            this.classList.add('active');
        });
    });

    // 轮播图功能
    const carouselItems = document.querySelectorAll('.carousel-item');
    const carouselIndicators = document.querySelectorAll('.carousel-indicator');
    const prevBtn = document.querySelector('.carousel-control.prev');
    const nextBtn = document.querySelector('.carousel-control.next');
    let currentIndex = 0;
    let interval;

    // 初始化轮播
    function initCarousel() {
        // 启动自动轮播
        startCarousel();

        // 绑定控制按钮事件
        if (prevBtn && nextBtn) {
            prevBtn.addEventListener('click', prevSlide);
            nextBtn.addEventListener('click', nextSlide);
        }

        // 绑定指示点事件
        carouselIndicators.forEach((indicator, index) => {
            indicator.addEventListener('click', () => {
                goToSlide(index);
            });
        });

        // Lines 39-45
        
        // 鼠标悬停时暂停轮播
        const carousel = document.querySelector('.carousel');
        if (carousel) {
            carousel.addEventListener('mouseenter', pauseCarousel);
            carousel.addEventListener('mouseleave', startCarousel);
        }
    }

    // 显示指定幻灯片
    function goToSlide(index) {
        // 移除当前激活状态
        carouselItems[currentIndex].classList.remove('active');
        carouselIndicators[currentIndex].classList.remove('active');

        // 更新索引
        currentIndex = (index + carouselItems.length) % carouselItems.length;

        // 添加新激活状态
        carouselItems[currentIndex].classList.add('active');
        carouselIndicators[currentIndex].classList.add('active');
    }

    // 下一张幻灯片
    function nextSlide() {
        goToSlide(currentIndex + 1);
    }

    // 上一张幻灯片
    function prevSlide() {
        goToSlide(currentIndex - 1);
    }

    // 暂停轮播
    function pauseCarousel() {
        clearInterval(interval);
    }

    // 开始轮播
    function startCarousel() {
        interval = setInterval(nextSlide, 5000);
    }

    // 初始化轮播
    initCarousel();
});