/* 全局样式 */
body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: #333;
}

/* 主题色彩 */
:root {
    --primary-color: #28a745;
    --secondary-color: #20c997;
    --accent-color: #17a2b8;
    --dark-color: #343a40;
    --light-color: #f8f9fa;
}

/* 导航栏样式 */
.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
}

.navbar-nav .nav-link {
    font-weight: 500;
    transition: color 0.3s ease;
}

.navbar-nav .nav-link:hover {
    color: #fff !important;
}

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

.carousel-bg {
    height: 600px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.carousel-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
}

.carousel-caption {
    position: relative;
    z-index: 2;
    text-align: center;
}

.carousel-caption h1 {
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.carousel-caption p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

/* 背景图片 - 已替换为实际图片 */
/* 轮播图背景现在使用实际的图片文件 */

/* 章节标题 */
.section-title {
    color: var(--dark-color);
    font-weight: 700;
    margin-bottom: 2rem;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary-color);
}

/* 卡片样式 */
.card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-radius: 15px;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1) !important;
}

.card-title {
    font-weight: 600;
    color: var(--dark-color);
}

/* 特色图标 */
.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    color: white;
    font-size: 2rem;
}

/* 特色图标图片 */
.feature-icon-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

/* 图片样式 */
.card-img-top {
    transition: transform 0.3s ease;
}

.card-img-top:hover {
    transform: scale(1.05);
}

/* 作者头像 */
.author-avatar img {
    border: 3px solid var(--primary-color);
    transition: transform 0.3s ease;
}

.author-avatar img:hover {
    transform: scale(1.1);
}

/* 按钮样式 */
.btn-success {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: 25px;
    padding: 0.75rem 2rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(40, 167, 69, 0.3);
}

.btn-outline-success {
    border-color: var(--primary-color);
    color: var(--primary-color);
    border-radius: 25px;
    padding: 0.75rem 2rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-outline-success:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* 页脚样式 */
footer {
    margin-top: 3rem;
}

footer a:hover {
    color: var(--primary-color) !important;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .carousel-bg {
        height: 400px;
    }
    
    .carousel-caption h1 {
        font-size: 2rem;
    }
    
    .carousel-caption p {
        font-size: 1rem;
    }
    
    .feature-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
}

/* 文章列表样式 */
.article-card {
    border: none;
    border-radius: 15px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

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

.article-excerpt {
    color: #6c757d;
    line-height: 1.6;
}

/* 面包屑导航 */
.breadcrumb {
    background: transparent;
    padding: 0;
    margin-bottom: 2rem;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: ">";
    color: var(--primary-color);
}

/* 分页样式 */
.pagination .page-link {
    color: var(--primary-color);
    border-color: #dee2e6;
}

.pagination .page-item.active .page-link {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* 加载动画 */
.fade-in {
    animation: fadeIn 0.8s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 详情页面样式 */
.article-content {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.article-hero {
    position: relative;
    overflow: hidden;
}

.hero-image {
    transition: transform 0.3s ease;
}

.hero-image:hover {
    transform: scale(1.02);
}

.article-body h2 {
    color: var(--dark-color);
    font-weight: 700;
    margin-top: 2rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-color);
}

.article-body h3 {
    color: var(--dark-color);
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.article-body h4 {
    color: var(--dark-color);
    font-weight: 500;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}

.article-body p {
    line-height: 1.8;
    margin-bottom: 1rem;
    color: #555;
}

.article-body ul {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

.article-body li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.article-tags .badge {
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
}

/* 侧边栏样式 */
.sidebar .card {
    border-radius: 15px;
    overflow: hidden;
}

.sidebar .card-header {
    border-bottom: none;
    font-weight: 600;
}

.sidebar .list-unstyled li {
    border-bottom: 1px solid #f0f0f0;
    padding-bottom: 0.75rem;
}

.sidebar .list-unstyled li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.sidebar .list-unstyled a:hover h6 {
    color: var(--primary-color) !important;
}

/* 相关文章样式 */
.related-articles h3 {
    color: var(--dark-color);
    font-weight: 700;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-color);
}

.related-articles .card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.related-articles .card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15) !important;
}

/* 面包屑导航样式 */
.breadcrumb-item + .breadcrumb-item::before {
    color: rgba(255, 255, 255, 0.7);
}

.breadcrumb-item a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
}

.breadcrumb-item a:hover {
    color: white;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .article-content {
        padding: 1rem;
    }
    
    .article-body h2 {
        font-size: 1.5rem;
    }
    
    .article-body h3 {
        font-size: 1.3rem;
    }
    
    .sidebar {
        margin-top: 2rem;
    }
}