/* 关于我们页面样式 */
.about-us-container {
    display: flex;
    max-width: 1200px;
    margin: 20px auto;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    overflow: hidden;
    min-height: 600px;
}

/* 左侧导航栏样式 */
.sidebar {
    width: 200px;
    background: linear-gradient(180deg, #f8f9fa 0%, #e9ecef 100%);
    border-right: 1px solid #dee2e6;
    flex-shrink: 0;
}

.sidebar-nav {
    padding: 0;
}

.nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-item {
    border-bottom: 1px solid #dee2e6;
    width: 160px;
}

.nav-item:last-child {
    border-bottom: none;
}

.nav-item a {
    display: block;
    padding: 20px 25px;
    color: #495057;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border-left: 4px solid transparent;
}

.nav-item:hover a,
.nav-item.active a {
    background-color: #2a5298;
    color: white;
    border-left-color: #1e3c72;
    transform: translateX(5px);
}

/* 右侧内容区域样式 */
.content-area {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
}

.content-section {
    display: none;
    animation: fadeInUp 0.5s ease;
}

.content-section.active {
    display: block;
}

.content-section h2 {
    color: #2a5298;
    margin-bottom: 30px;
    font-size: 28px;
    border-bottom: 3px solid #2a5298;
    padding-bottom: 10px;
}

/* 课题组简介特殊布局 */
.intro-layout {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.intro-top {
    display: flex;
    gap: 30px;
    align-items: flex-start;
}

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

.intro-image img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.intro-text {
    flex: 1;
}

.intro-text h2 {
    margin-bottom: 20px;
    font-size: 24px;
}

.intro-text p {
    margin-bottom: 15px;
    line-height: 1.8;
    color: #555;
    text-align: justify;
}

.intro-bottom {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 10px;
    border-left: 4px solid #2a5298;
}

.research-areas h3 {
    color: #2a5298;
    margin-bottom: 20px;
    font-size: 20px;
}

.areas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.area-item {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

.area-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.area-item h4 {
    color: #2a5298;
    margin-bottom: 10px;
    font-size: 16px;
}

.area-item p {
    color: #666;
    font-size: 14px;
    margin: 0;
}

/* 招生招聘样式 */
.recruitment-section {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 10px;
    border-left: 4px solid #2a5298;
}

.recruitment-content {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}
.recruitment-content:hover{
    transform: translateY(-5px);
}

.recruitment-content p {
    color: #495057;
    line-height: 1.8;
    margin-bottom: 15px;
    font-size: 15px;
}

.recruitment-content p:last-child {
    margin-bottom: 0;
}

/* 成员卡片样式 */
.members-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
    margin-top: 20px;
}

.member-card {
    background: white;
    border-radius: 15px;
    padding: 50px 25px 25px 25px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
    width: 460px;
    height: 450px;
}

.member-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

.member-photo {
    width: 120px;
    height: 120px;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid #2a5298;
    box-shadow: 0 4px 15px rgba(42, 82, 152, 0.3);
}

.member-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.member-info {
    text-align: center;
}

.member-info h3 {
    color: #2a5298;
    margin-bottom: 8px;
    font-size: 20px;
    font-weight: 600;
}

.member-title {
    color: #6c757d;
    font-weight: 500;
    margin-bottom: 15px;
    font-size: 14px;
}

.member-intro {
    color: #555;
    line-height: 1.6;
    margin-bottom: 20px;
    text-align: center;
    font-size: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
}

.member-links {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
    padding-top: 20px;
}

.member-links a {
    color: #2a5298;
    text-decoration: none;
    padding: 8px 16px;
    border: 1px solid #2a5298;
    border-radius: 20px;
    font-size: 12px;
    transition: all 0.3s ease;
    background: white;
}

.member-links a:hover {
    background: #2a5298;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(42, 82, 152, 0.3);
}

/* 个人详细信息链接特殊样式 */
.member-links .detail-link {
    background: linear-gradient(135deg, #2a5298, #3d6bb3);
    color: white;
    font-weight: 600;
    border: none;
    box-shadow: 0 2px 8px rgba(42, 82, 152, 0.3);
}

.member-links .detail-link:hover {
    background: linear-gradient(135deg, #1a3d7a, #2a5298);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(42, 82, 152, 0.4);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .about-us-container {
        flex-direction: column;
        margin: 10px;
    }
    
    .sidebar {
        width: 100%;
        order: 2;
    }
    
    .nav-list {
        display: flex;
        overflow-x: auto;
    }
    
    .nav-item {
        flex: 0 0 auto;
        border-bottom: none;
        border-right: 1px solid #dee2e6;
    }
    
    .nav-item:last-child {
        border-right: none;
    }
    
    .nav-item a {
        white-space: nowrap;
        padding: 15px 20px;
        border-left: none;
        border-bottom: 4px solid transparent;
    }
    
    .nav-item:hover a,
    .nav-item.active a {
        transform: translateY(-5px);
        border-bottom-color: #1e3c72;
        border-left: none;
    }
    
    .content-area {
        order: 1;
        padding: 20px;
    }
    
    .intro-top {
        flex-direction: column;
    }
    
    .intro-image {
        flex: none;
        align-self: center;
    }
    
    .members-grid {
        grid-template-columns: 1fr;
    }
    
    .areas-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .content-area {
        padding: 15px;
    }
    
    .member-card {
        padding: 20px;
    }
    
    .member-photo {
        width: 100px;
        height: 100px;
    }
    
    .intro-image {
        flex: 0 0 250px;
    }
    
    .intro-image img {
        height: 150px;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 滚动条样式 */
.content-area::-webkit-scrollbar {
    width: 6px;
}

.content-area::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

.content-area::-webkit-scrollbar-thumb {
    background: #2a5298;
    border-radius: 3px;
}

.content-area::-webkit-scrollbar-thumb:hover {
    background: #1e3c72;
}

/* 分页控件样式 */
.pagination-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 30px 0 20px 0;
    gap: 8px;
    flex-wrap: wrap;
}

.pagination-btn {
    padding: 8px 12px;
    border: 1px solid #dee2e6;
    background: white;
    color: #495057;
    cursor: pointer;
    border-radius: 4px;
    font-size: 14px;
    transition: all 0.3s ease;
    min-width: 40px;
    text-align: center;
}

.pagination-btn:hover:not(.disabled):not(.active) {
    background: #f8f9fa;
    border-color: #2a5298;
    color: #2a5298;
}

.pagination-btn.active {
    background: #2a5298;
    border-color: #2a5298;
    color: white;
    cursor: default;
}

.pagination-btn.disabled {
    background: #f8f9fa;
    color: #6c757d;
    cursor: not-allowed;
    opacity: 0.6;
}

.pagination-ellipsis {
    padding: 8px 4px;
    color: #6c757d;
    font-size: 14px;
}

.pagination-info {
    text-align: center;
    color: #6c757d;
    font-size: 14px;
    margin-bottom: 20px;
}

/* 研究员内容区域样式调整 */
.researchers-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-bottom: 20px;
}

/* 响应式分页样式 */
@media (max-width: 768px) {
    .pagination-controls {
        gap: 4px;
        margin: 20px 0 15px 0;
    }
    
    .pagination-btn {
        padding: 6px 10px;
        font-size: 13px;
        min-width: 35px;
    }
    
    .pagination-info {
        font-size: 13px;
        margin-bottom: 15px;
    }
    
    /* 研究员网格响应式 */
    .researchers-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .pagination-controls {
        gap: 2px;
    }
    
    .pagination-btn {
        padding: 5px 8px;
        font-size: 12px;
        min-width: 30px;
    }
    
    .pagination-ellipsis {
        padding: 5px 2px;
        font-size: 12px;
    }
}