:root {
    --primary-color: #1a1a2e;
    --secondary-color: #16213e;
    --accent-color: #0099ff;
    --text-color: #ffffff;
    --text-secondary: #e2e2e2;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--primary-color);
    color: var(--text-color);
    line-height: 1.6;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: var(--secondary-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent-color);
}

.nav-menu {
    display: flex;
    list-style: none;
}

.nav-menu li a {
    color: var(--text-color);
    text-decoration: none;
    padding: 0.5rem 1rem;
    transition: color 0.3s ease;
}

.nav-menu li a:hover {
    color: var(--accent-color);
}

/* 英雄区域样式 */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 2rem;
    background: linear-gradient(
        45deg,
        var(--primary-color),
        var(--secondary-color)
    );
}

.profile-img {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    margin-bottom: 2rem;
    border: 3px solid var(--accent-color);
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.tagline {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.social-links a {
    color: var(--text-color);
    font-size: 1.5rem;
    margin: 0 1rem;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: var(--accent-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--secondary-color);
        padding: 1rem 0;
    }

    .nav-menu.active {
        display: block;
    }

    .nav-menu li {
        display: block;
        text-align: center;
    }

    .nav-toggle {
        display: block;
        cursor: pointer;
    }
}

/* 在现有样式后添加以下内容 */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background-color: var(--accent-color);
}

/* About Section */
.about {
    padding: 6rem 0;
    background-color: var(--secondary-color);
}

.skills {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.skill-item {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.skill-item:hover {
    transform: translateY(-5px);
}

.skill-item i {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

/* Projects Section */
.projects {
    padding: 6rem 0;
}

.project-carousel {
    position: relative;
    overflow: hidden;
}

.project-item {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
}

.project-item img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.project-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 2rem;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: var(--text-color);
}

.btn {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    background-color: var(--accent-color);
    color: var(--text-color);
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background-color: #007acc;
}

/* Blog Section */
.blog {
    padding: 6rem 0;
    background-color: var(--secondary-color);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.blog-card {
    background: var(--primary-color);
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.blog-card:hover {
    transform: translateY(-5px);
}

.blog-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.blog-content {
    padding: 1.5rem;
}

.blog-tags span {
    background: var(--accent-color);
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    margin-right: 0.5rem;
}

/* Contact Section */
.contact {
    padding: 6rem 0;
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.contact-info {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-item i {
    font-size: 2rem;
    color: var(--accent-color);
}

.contact-item h3 {
    font-size: 1.5rem;
    color: var(--text-color);
}

.contact-item p {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.contact-item a {
    color: inherit;
    text-decoration: none;
}

.contact-item a:hover {
    text-decoration: underline;
}

/* Footer */
.footer {
    text-align: center;
    padding: 2rem 0;
    background-color: var(--secondary-color);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .section-title {
        font-size: 2rem;
    }
    
    .skills {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
}

/* 添加 Unity 技能图片弹出效果 */
.unity-skill {
    position: relative;
    cursor: pointer;
}

.unity-popup {
    display: none;
    position: absolute;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0,0,0,0.5);
    z-index: 1000;
}

.unity-skill:hover .unity-popup {
    display: block;
}

/* 修改项目轮播图样式 */
.project-item img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

/* 添加 bilibili 图标 */
.fa-bilibili:before {
    content: "B站";
    font-style: normal;
    font-weight: bold;
    color: var(--text-color);
}

/* 社交链接悬停效果 */
.social-links a:hover {
    transform: translateY(-3px);
    transition: transform 0.3s ease;
}

/* 删除这些样式 */
.wechat-qr {
    display: none;
    position: absolute;
    width: 150px;
    height: 150px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0,0,0,0.3);
}

.wechat-link:hover + .wechat-qr {
    display: block;
}