/* 怀旧风格全局样式 */
:root {
    --vintage-brown: #8B6B4E;
    --vintage-dark: #3E2D1E;
    --vintage-light: #E8D8C0;
    --vintage-red: #B85C3C;
    --vintage-yellow: #D4A76A;
    --vintage-border: 2px solid var(--vintage-brown);
    --vintage-shadow: 5px 5px 0 rgba(0, 0, 0, 0.1);
}

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

body {
    background-color: var(--vintage-light);
    color: var(--vintage-dark);
    line-height: 1.6;
    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 d="M0 0h100v100H0z" fill="none"/><path d="M20 20h10v10H20zM60 60h10v10H60z" fill="rgba(139,107,78,0.1)"/></svg>');
}

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

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

.container {
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 - 复古报纸风格 */
header {
    background-color: var(--vintage-dark);
    padding: 20px 0;
    border-bottom: var(--vintage-border);
    box-shadow: var(--vintage-shadow);
    position: relative;
}

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

.logo {
    font-size: 32px;
    font-weight: bold;
    font-family: 'Palatino Linotype', 'Book Antiqua', serif;
    color: var(--vintage-yellow);
    text-shadow: 2px 2px 0 var(--vintage-brown);
    letter-spacing: 2px;
}

/* 复古导航菜单 */
nav ul {
    display: flex;
    list-style: none;
    gap: 15px;
    flex-wrap: wrap;
}

nav ul li a {
    padding: 8px 15px;
    background-color: var(--vintage-light);
    color: var(--vintage-dark);
    border: 1px solid var(--vintage-brown);
    font-weight: bold;
    text-transform: uppercase;
    font-size: 14px;
    letter-spacing: 1px;
}

nav ul li a:hover {
    background-color: var(--vintage-red);
    color: white;
    text-decoration: none;
}

/* 主要内容区域 - 复古卡片 */
.main-content {
    background-color: white;
    padding: 30px;
    margin: 30px 0;
    border: var(--vintage-border);
    box-shadow: var(--vintage-shadow);
    position: relative;
}

.main-content::before {
    content: '';
    position: absolute;
    top: 5px;
    left: 5px;
    right: 5px;
    bottom: 5px;
    border: 1px dashed var(--vintage-brown);
    pointer-events: none;
}

.section-title {
    font-size: 26px;
    margin-bottom: 25px;
    padding-bottom: 10px;
    border-bottom: 3px double var(--vintage-brown);
    color: var(--vintage-red);
    font-family: 'Palatino Linotype', 'Book Antiqua', serif;
    letter-spacing: 1px;
}

/* 复古文章列表 */
.article-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 25px;
}

.article-item {
    background-color: var(--vintage-light);
    border: var(--vintage-border);
    padding: 20px;
    transition: all 0.3s ease;
    position: relative;
}

.article-item:hover {
    transform: translate(-3px, -3px);
    box-shadow: 5px 5px 0 var(--vintage-brown);
}

.article-item::before {
    content: '';
    position: absolute;
    top: 5px;
    right: 5px;
    width: 30px;
    height: 30px;
    background-image: url('data:image/svg+xml;utf8,<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><path d="M50 10L60 40H90L65 60L75 90L50 70L25 90L35 60L10 40H40Z" fill="%23B85C3C"/></svg>');
    background-size: contain;
    opacity: 0.3;
}

.article-image {
    width: 100%;
    height: 160px;
    object-fit: cover;
    border: 1px solid var(--vintage-brown);
    margin-bottom: 15px;
}

.article-title {
    font-size: 18px;
    margin-bottom: 10px;
    font-weight: bold;
    color: var(--vintage-dark);
    font-family: 'Palatino Linotype', 'Book Antiqua', serif;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: var(--vintage-brown);
    margin-top: 15px;
    border-top: 1px dotted var(--vintage-brown);
    padding-top: 10px;
}

/* 分类标签 */
.category-tag {
    display: inline-block;
    padding: 3px 10px;
    background-color: var(--vintage-red);
    color: white;
    font-size: 12px;
    margin-bottom: 10px;
    border-radius: 0;
    font-weight: bold;
}

/* 文章详情页样式 */
.article-detail {
    max-width: 800px;
    margin: 0 auto;
}

.article-header {
    margin-bottom: 40px;
    text-align: center;
    border-bottom: 3px double var(--vintage-brown);
    padding-bottom: 20px;
}

.article-title {
    font-size: 32px;
    margin-bottom: 20px;
    color: var(--vintage-dark);
    font-family: 'Palatino Linotype', 'Book Antiqua', serif;
    line-height: 1.3;
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 25px;
    color: var(--vintage-brown);
    margin-bottom: 25px;
    flex-wrap: wrap;
    font-style: italic;
}

.article-image {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
    border: var(--vintage-border);
    margin-bottom: 30px;
}

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

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

.article-content img {
    max-width: 100%;
    height: auto;
    border: 1px solid var(--vintage-brown);
    margin: 20px auto;
    display: block;
}

/* 复古分页导航 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 40px;
}

.pagination a {
    padding: 10px 20px;
    background-color: var(--vintage-light);
    border: var(--vintage-border);
    font-weight: bold;
    color: var(--vintage-dark);
}

.pagination a:hover {
    background-color: var(--vintage-red);
    color: white;
}

/* 复古友情链接 */
.friend-links {
    background-color: white;
    padding: 25px;
    margin: 30px 0;
    border: var(--vintage-border);
    box-shadow: var(--vintage-shadow);
}

.friend-links h3 {
    margin-bottom: 20px;
    color: var(--vintage-red);
    font-size: 20px;
    font-family: 'Palatino Linotype', 'Book Antiqua', serif;
    border-bottom: 1px solid var(--vintage-brown);
    padding-bottom: 10px;
}

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

.friend-links-container a {
    padding: 8px 15px;
    background-color: var(--vintage-light);
    border: 1px solid var(--vintage-brown);
    font-size: 14px;
}

.friend-links-container a:hover {
    background-color: var(--vintage-red);
    color: white;
}

/* 复古页脚样式 */
footer {
    background-color: var(--vintage-dark);
    padding: 30px 0;
    text-align: center;
    margin-top: 50px;
    border-top: var(--vintage-border);
    color: var(--vintage-light);
}

.copyright {
    font-size: 14px;
    font-style: italic;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 20px;
    }
    
    nav ul {
        justify-content: center;
    }
    
    .article-list {
        grid-template-columns: 1fr;
    }
    
    .article-title {
        font-size: 24px;
    }
    
    .article-meta {
        gap: 15px;
    }
}