/* 基础样式 */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

/* 导航栏样式 */
.portfolio-nav {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.portfolio-nav .logo {
    font-size: 1.5rem;
    font-weight: bold;
}

.portfolio-nav ul {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
}

.portfolio-nav li {
    margin-left: 1.5rem;
}

.portfolio-nav a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
}

.portfolio-nav a:hover {
    color: #3498db;
}

/* 通用容器样式 */
.home-container, 
.portfolio-container, 
.resume-container, 
.work-detail {
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

/* 首页样式 */
.hero {
    text-align: center;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, #3498db, #2c3e50);
    color: white;
    border-radius: 8px;
    margin-bottom: 3rem;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-button {
    display: inline-block;
    background-color: #e74c3c;
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 4px;
    text-decoration: none;
    margin-top: 1.5rem;
    transition: background-color 0.3s;
}

.cta-button:hover {
    background-color: #c0392b;
}

/* 网格布局 */
.work-grid, 
.portfolio-grid, 
.gallery-grid, 
.feature-grid,
.process-steps {
    display: grid;
    gap: 2rem;
    margin: 2rem 0;
}

.work-item, 
.portfolio-item, 
.gallery-item, 
.feature,
.step {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.work-item:hover, 
.portfolio-item:hover, 
.gallery-item:hover, 
.feature:hover,
.step:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

/* 履历页面样式 */
.resume-container section {
    margin-bottom: 3rem;
}

.profile-info, .education-item {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.timeline-item {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 2rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 12px;
    height: 12px;
    background: #3498db;
    border-radius: 50%;
}

.timeline-item::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 12px;
    bottom: 0;
    width: 2px;
    background: #3498db;
}

/* 作品详情样式 */
.project-overview {
    display: grid;
    gap: 2rem;
    margin-bottom: 3rem;
}

.project-meta, .project-image, .project-description {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.project-image img {
    max-width: 100%;
    border-radius: 4px;
}

.project-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 3rem;
}

.back-button, .next-button {
    padding: 0.8rem 1.5rem;
    background-color: #3498db;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.back-button:hover, .next-button:hover {
    background-color: #2980b9;
}

/* 响应式设计 */
@media (min-width: 768px) {
    .work-grid, .portfolio-grid, .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .gallery-grid, .process-steps {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .project-overview {
        grid-template-columns: 1fr 2fr;
    }
}

@media (min-width: 1024px) {
    .work-grid, .portfolio-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .project-overview {
        grid-template-columns: 1fr 1fr 2fr;
    }
}

@media (max-width: 767px) {
    .portfolio-nav {
        flex-direction: column;
        padding: 1rem;
    }
    
    .portfolio-nav ul {
        margin-top: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .portfolio-nav li {
        margin: 0.5rem;
    }
    
    .hero {
        padding: 2rem 1rem;
    }
    
    .project-navigation {
        flex-direction: column;
        gap: 1rem;
    }
}