/* 拟物化设计风格 - 基于青金石蓝色调 */
:root {
    --main-color: #1e3d8f; /* 青金石蓝 */
    --secondary-color: #3a5fcd;
    --highlight-color: #5d7eff;
    --text-color: #333;
    --light-bg: #f0f4ff;
    --dark-bg: #e0e8ff;
    --border-color: #b0c4de;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Georgia', 'Times New Roman', serif;
}

body {
    background-color: var(--light-bg);
    color: var(--text-color);
    background-image: url('data:image/svg+xml;utf8,<svg width="100" height="100" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><path fill="rgba(30, 61, 143, 0.03)" d="M0 0h100v100H0z"/></svg>');
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: var(--main-color);
    transition: all 0.3s;
}

a:hover {
    color: var(--highlight-color);
    text-decoration: underline;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 拟物化头部设计 */
header {
    background: linear-gradient(to bottom, #f8f9fa, #e9ecef);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    padding: 15px 0;
    position: relative;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 28px;
    font-weight: bold;
    color: var(--main-color);
    text-shadow: 1px 1px 1px rgba(0,0,0,0.1);
    padding: 10px 15px;
    background: linear-gradient(to bottom, #fff, #e9ecef);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.8), 0 2px 3px rgba(0,0,0,0.1);
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 15px;
    position: relative;
}

nav ul li a {
    padding: 8px 15px;
    background: linear-gradient(to bottom, #fff, #e9ecef);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.8), 0 1px 2px rgba(0,0,0,0.1);
    font-weight: 500;
    transition: all 0.3s;
}

nav ul li a:hover {
    background: linear-gradient(to bottom, var(--secondary-color), var(--main-color));
    color: white;
    text-decoration: none;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.2), 0 1px 2px rgba(0,0,0,0.2);
}

/* 拟物化内容区域 */
.main-content {
    background: white;
    padding: 30px;
    margin: 30px 0;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    background-image: url('data:image/svg+xml;utf8,<svg width="100" height="100" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><path fill="rgba(30, 61, 143, 0.02)" d="M0 0h100v100H0z"/></svg>');
}

.section-title {
    font-size: 24px;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
    color: var(--main-color);
    text-shadow: 1px 1px 1px rgba(0,0,0,0.1);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100px;
    height: 2px;
    background: linear-gradient(to right, var(--main-color), transparent);
}

/* 拟物化文章卡片 */
.article-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.article-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    background-image: url('data:image/svg+xml;utf8,<svg width="100" height="100" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><path fill="rgba(30, 61, 143, 0.03)" d="M0 0h100v100H0z"/></svg>');
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.card-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-bottom: 1px solid var(--border-color);
}

.card-body {
    padding: 20px;
}

.card-title {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--main-color);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: #666;
    margin-top: 15px;
    border-top: 1px dashed var(--border-color);
    padding-top: 10px;
}

/* 分类标签 - 拟物化按钮 */
.category-tag {
    display: inline-block;
    padding: 3px 12px;
    background: linear-gradient(to bottom, #fff, #e9ecef);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    font-size: 12px;
    margin-bottom: 10px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.8), 0 1px 2px rgba(0,0,0,0.1);
}

/* 文章详情页 - 拟物化设计 */
.article-detail {
    max-width: 800px;
    margin: 0 auto;
}

.article-header {
    margin-bottom: 40px;
    text-align: center;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.article-title {
    font-size: 32px;
    margin-bottom: 20px;
    color: var(--main-color);
    text-shadow: 1px 1px 1px rgba(0,0,0,0.1);
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 25px;
    color: #666;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.article-image {
    width: 100%;
    max-height: 450px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.article-content {
    line-height: 1.8;
    font-size: 17px;
}

.article-content p {
    margin-bottom: 20px;
}

.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 20px 0;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

/* 拟物化分页按钮 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 40px;
}

.pagination a {
    padding: 10px 20px;
    border-radius: 30px;
    background: linear-gradient(to bottom, #fff, #e9ecef);
    border: 1px solid var(--border-color);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.8), 0 1px 2px rgba(0,0,0,0.1);
    transition: all 0.3s;
}

.pagination a:hover {
    background: linear-gradient(to bottom, var(--secondary-color), var(--main-color));
    color: white;
    text-decoration: none;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.2), 0 1px 2px rgba(0,0,0,0.2);
}

/* 拟物化友情链接 */
.friend-links {
    background: white;
    border-radius: 8px;
    padding: 25px;
    margin: 30px 0;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    background-image: url('data:image/svg+xml;utf8,<svg width="100" height="100" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><path fill="rgba(30, 61, 143, 0.03)" d="M0 0h100v100H0z"/></svg>');
}

.friend-links h3 {
    margin-bottom: 20px;
    color: var(--main-color);
    font-size: 20px;
    text-shadow: 1px 1px 1px rgba(0,0,0,0.1);
}

.friend-links-container {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.friend-links-container a {
    padding: 8px 15px;
    background: linear-gradient(to bottom, #fff, #e9ecef);
    border-radius: 20px;
    font-size: 14px;
    border: 1px solid var(--border-color);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.8), 0 1px 2px rgba(0,0,0,0.1);
    transition: all 0.3s;
}

.friend-links-container a:hover {
    background: linear-gradient(to bottom, var(--secondary-color), var(--main-color));
    color: white;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.2), 0 1px 2px rgba(0,0,0,0.2);
}

/* 拟物化页脚 */
footer {
    background: linear-gradient(to bottom, #f8f9fa, #e9ecef);
    padding: 30px 0;
    text-align: center;
    margin-top: 50px;
    border-top: 1px solid var(--border-color);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.8);
}

.copyright {
    font-size: 14px;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 20px;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    
    .article-container {
        grid-template-columns: 1fr;
    }
    
    .article-title {
        font-size: 26px;
    }
    
    .article-meta {
        gap: 15px;
    }
}