/* 全局样式 */
body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}

/* 导航栏样式 */
.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}

/* 轮播图样式 */
.carousel {
    margin-top: 76px;
}

.carousel-item {
    height: 500px;
    background-color: #f8f9fa;
}

.carousel-item img {
    object-fit: cover;
    height: 100%;
}

.carousel-caption {
    background: rgba(0,0,0,0.5);
    padding: 20px;
    border-radius: 10px;
    bottom: 50px;
}

.carousel-caption h1 {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 15px;
}

.carousel-caption p {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

/* 卡片样式 */
.card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: none;
    border-radius: 15px;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15) !important;
}

.card-img-top {
    height: 200px;
    object-fit: cover;
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    color: #2c3e50;
    font-weight: bold;
    margin-bottom: 1rem;
}

/* 特色内容样式 */
.feature-item {
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
    border-left: 4px solid #007bff;
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: #e9ecef;
    transform: translateX(5px);
}

.feature-item h5 {
    color: #2c3e50;
    font-weight: bold;
    margin-bottom: 10px;
}

/* 按钮样式 */
.btn {
    border-radius: 25px;
    padding: 10px 25px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(45deg, #007bff, #0056b3);
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(45deg, #0056b3, #004085);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,123,255,0.3);
}

.btn-outline-primary {
    border-color: #007bff;
    color: #007bff;
}

.btn-outline-primary:hover {
    background: #007bff;
    border-color: #007bff;
    transform: translateY(-2px);
}

/* 页脚样式 */
footer {
    margin-top: auto;
}

footer h5 {
    color: #fff;
    font-weight: bold;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .carousel-item {
        height: 300px;
    }
    
    .carousel-caption h1 {
        font-size: 1.8rem;
    }
    
    .carousel-caption p {
        font-size: 1rem;
    }
    
    .display-4 {
        font-size: 2rem;
    }
}

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

.card, .feature-item {
    animation: fadeInUp 0.6s ease-out;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 文章列表样式 */
.article-list {
    margin-top: 100px;
}

.article-card {
    margin-bottom: 30px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.15);
}

.article-image {
    height: 250px;
    object-fit: cover;
}

.article-meta {
    color: #6c757d;
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.article-excerpt {
    color: #666;
    line-height: 1.6;
}

/* 面包屑导航 */
.breadcrumb {
    background: transparent;
    padding: 0;
    margin-bottom: 30px;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: ">";
    color: #6c757d;
}

/* 分页样式 */
.pagination .page-link {
    border-radius: 50%;
    margin: 0 5px;
    border: none;
    color: #007bff;
}

.pagination .page-item.active .page-link {
    background: #007bff;
    border-color: #007bff;
}

/* 搜索框样式 */
.search-box {
    position: relative;
    margin-bottom: 30px;
}

.search-box input {
    border-radius: 25px;
    padding: 12px 20px;
    border: 2px solid #e9ecef;
    transition: all 0.3s ease;
}

.search-box input:focus {
    border-color: #007bff;
    box-shadow: 0 0 0 0.2rem rgba(0,123,255,0.25);
}

.search-box .btn {
    position: absolute;
    right: 5px;
    top: 5px;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    padding: 0;
}