/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.navbar nav ul {
    display: flex;
    list-style: none;
    justify-content: center;
    padding: 20px 0;
}

.navbar nav ul li {
    margin: 0 20px;
}

.navbar nav ul li a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.navbar nav ul li a:hover {
    color: #6c5ce7;
}

/* 首页大屏 */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    text-align: center;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
}

.hero h1 span {
    color: #f1f1f1;
}

.hero p {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.hero .subtitle {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.btn-primary {
    display: inline-block;
    padding: 12px 30px;
    background-color: #fff;
    color: #6c5ce7;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.btn-secondary {
    display: inline-block;
    padding: 12px 30px;
    background-color: transparent;
    color: #fff;
    text-decoration: none;
    border: 2px solid #fff;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background-color: #fff;
    color: #6c5ce7;
}

/* 关于我 */
.about {
    padding: 100px 0;
    background-color: #fff;
}

.about h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: #333;
}

.about-content {
    display: flex;
    align-items: center;
    gap: 60px;
}

.about-text {
    flex: 1;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 1.1rem;
    line-height: 1.8;
}

.about-image {
    flex: 0 0 300px;
}

.about-image img {
    width: 100%;
    border-radius: 50%;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* 技能栈 */
.skills {
    padding: 100px 0;
    background-color: #f9f9f9;
}

.skills h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: #333;
}

.skills-container {
    display: flex;
    gap: 60px;
    justify-content: center;
}

.skill-category {
    flex: 1;
    max-width: 400px;
}

.skill-category h3 {
    font-size: 1.5rem;
    margin-bottom: 30px;
    color: #6c5ce7;
    text-align: center;
}

.skill-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

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

.skill-item i {
    font-size: 2rem;
    color: #6c5ce7;
}

.skill-item span {
    font-weight: 500;
}

/* 项目展示 */
.projects {
    padding: 100px 0;
    background-color: #fff;
}

.projects h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: #333;
}

.projects-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.project-card {
    background-color: #f9f9f9;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.project-image {
    height: 200px;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-content {
    padding: 25px;
}

.project-content h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #333;
}

.project-content p {
    margin-bottom: 20px;
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.project-tech span {
    padding: 5px 15px;
    background-color: #6c5ce7;
    color: #fff;
    border-radius: 20px;
    font-size: 0.8rem;
}

.project-links {
    display: flex;
    gap: 20px;
}

.project-links a {
    display: flex;
    align-items: center;
    gap: 5px;
    text-decoration: none;
    color: #6c5ce7;
    font-weight: 500;
    transition: color 0.3s ease;
}

.project-links a:hover {
    color: #764ba2;
}

/* 联系我 */
.contact {
    padding: 100px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
}

.contact h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
}

.contact-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
    align-items: center;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 1.1rem;
}

.contact-item i {
    font-size: 1.5rem;
}

.contact-item a {
    color: #fff;
    text-decoration: none;
    transition: text-decoration 0.3s ease;
}

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

.resume-download .btn-primary {
    background-color: #fff;
    color: #6c5ce7;
}

.resume-download .btn-primary:hover {
    background-color: #f1f1f1;
}

/* 页脚 */
.footer {
    padding: 30px 0;
    background-color: #333;
    color: #fff;
    text-align: center;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar nav ul {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.2rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .about-content {
        flex-direction: column;
        text-align: center;
    }

    .skills-container {
        flex-direction: column;
        align-items: center;
    }

    .skill-list {
        grid-template-columns: 1fr;
    }

    .projects-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .about-image {
        flex: 0 0 200px;
    }

    .project-card {
        margin: 0 20px;
    }
}