/* 复古风格全局样式 */
:root {
    --primary-color: #ff2d55; /* 鲜艳红色 */
    --secondary-color: #00cc99; /* 霓虹绿 */
    --accent-color: #ff9f1c; /* 橙色 */
    --bg-color: #1a1a2e; /* 深蓝背景 */
    --text-color: #e2e2e2;
    --retro-pattern: url('data:image/svg+xml;utf8,<svg width="20" height="20" xmlns="http://www.w3.org/2000/svg"><rect width="10" height="10" x="0" y="0" fill="%23ff2d55"/><rect width="10" height="10" x="10" y="10" fill="%23ff2d55"/></svg>');
    --retro-font: 'Courier New', Courier, monospace;
    --retro-font-heading: 'Arial Black', 'Arial Bold', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--retro-font);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    background-image: var(--retro-pattern);
    background-size: 20px 20px;
}

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

a:hover {
    color: var(--accent-color);
    text-shadow: 0 0 5px var(--accent-color);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 复古风格头部 */
header {
    background-color: rgba(26, 26, 46, 0.9);
    padding: 20px 0;
    border-bottom: 3px solid var(--primary-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    font-family: var(--retro-font-heading);
    font-size: 32px;
    font-weight: bold;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 2px;
    text-transform: uppercase;
    text-shadow: 3px 3px 0 rgba(0,0,0,0.3);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 25px;
    flex-wrap: wrap;
}

nav ul li a {
    font-family: var(--retro-font-heading);
    padding: 8px 15px;
    border: 2px solid var(--secondary-color);
    border-radius: 0;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    background-color: rgba(0,0,0,0.3);
}

nav ul li a:hover {
    background-color: var(--secondary-color);
    color: var(--bg-color);
    transform: translate(-3px, -3px);
    box-shadow: 3px 3px 0 var(--primary-color);
}

/* 主要内容区域 - 复古卡片 */
.main-content {
    background-color: rgba(26, 26, 46, 0.9);
    border: 3px solid var(--primary-color);
    border-radius: 0;
    padding: 30px;
    margin: 30px 0;
    box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.3);
}

.section-title {
    font-family: var(--retro-font-heading);
    font-size: 28px;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 3px dashed var(--accent-color);
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 100px;
    height: 3px;
    background-color: var(--secondary-color);
}

/* 复古网格布局 */
.retro-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.retro-card {
    background-color: rgba(26, 26, 46, 0.9);
    border: 3px solid var(--accent-color);
    border-radius: 0;
    overflow: hidden;
    transition: all 0.3s ease;
    position: relative;
}

.retro-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, transparent 0%, rgba(255, 45, 85, 0.1) 100%);
    z-index: 1;
}

.retro-card:hover {
    transform: translate(-5px, -5px);
    box-shadow: 8px 8px 0 var(--secondary-color);
}

.card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 3px solid var(--primary-color);
    filter: sepia(0.3) contrast(1.2);
}

.card-body {
    padding: 20px;
    position: relative;
    z-index: 2;
}

.card-title {
    font-family: var(--retro-font-heading);
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--accent-color);
    text-transform: uppercase;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    color: var(--secondary-color);
    margin-top: 15px;
    font-weight: bold;
}

/* 分类标签 */
.retro-tag {
    display: inline-block;
    padding: 3px 10px;
    background-color: var(--primary-color);
    color: white;
    font-weight: bold;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 15px;
    border: 2px solid white;
}

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

.article-header {
    margin-bottom: 40px;
    text-align: center;
    border: 3px solid var(--secondary-color);
    padding: 30px;
    background-color: rgba(26, 26, 46, 0.9);
    position: relative;
}

.article-header::before {
    content: '';
    position: absolute;
    top: 5px;
    left: 5px;
    right: 5px;
    bottom: 5px;
    border: 2px dashed var(--accent-color);
    pointer-events: none;
}

.article-title {
    font-family: var(--retro-font-heading);
    font-size: 36px;
    margin-bottom: 20px;
    color: var(--primary-color);
    text-transform: uppercase;
    line-height: 1.2;
    text-shadow: 3px 3px 0 rgba(0,0,0,0.3);
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 25px;
    color: var(--accent-color);
    margin-bottom: 25px;
    flex-wrap: wrap;
    font-weight: bold;
}

.article-image {
    width: 100%;
    max-height: 450px;
    object-fit: cover;
    border: 3px solid var(--primary-color);
    margin-bottom: 30px;
    filter: sepia(0.4) contrast(1.2);
}

.article-content {
    line-height: 1.8;
    font-size: 18px;
    background-color: rgba(26, 26, 46, 0.9);
    padding: 30px;
    border: 3px solid var(--accent-color);
}

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

.article-content img {
    max-width: 100%;
    height: auto;
    border: 3px solid var(--primary-color);
    margin: 20px 0;
    filter: sepia(0.3) contrast(1.2);
}

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

.retro-pagination a {
    padding: 12px 24px;
    font-family: var(--retro-font-heading);
    font-weight: bold;
    background-color: var(--primary-color);
    color: white;
    border: none;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.retro-pagination a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: all 0.5s ease;
}

.retro-pagination a:hover {
    background-color: var(--accent-color);
    transform: translate(-3px, -3px);
    box-shadow: 5px 5px 0 var(--secondary-color);
}

.retro-pagination a:hover::before {
    left: 100%;
}

/* 友情链接 */
.retro-links {
    background-color: rgba(26, 26, 46, 0.9);
    border: 3px solid var(--secondary-color);
    padding: 25px;
    margin: 30px 0;
}

.retro-links h3 {
    margin-bottom: 20px;
    color: var(--accent-color);
    font-family: var(--retro-font-heading);
    font-size: 24px;
    text-transform: uppercase;
}

.retro-links-container {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.retro-links-container a {
    padding: 8px 15px;
    background-color: var(--primary-color);
    color: white;
    font-weight: bold;
    border: 2px solid white;
    text-transform: uppercase;
    font-size: 14px;
    letter-spacing: 1px;
    transition: all 0.3s ease;
}

.retro-links-container a:hover {
    background-color: var(--accent-color);
    transform: translate(-2px, -2px);
    box-shadow: 4px 4px 0 var(--secondary-color);
}

/* 页脚样式 */
footer {
    background-color: rgba(26, 26, 46, 0.9);
    padding: 30px 0;
    text-align: center;
    margin-top: 50px;
    border-top: 3px solid var(--primary-color);
    font-family: var(--retro-font-heading);
}

.copyright {
    font-size: 16px;
    color: var(--accent-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 20px;
    }
    
    nav ul {
        justify-content: center;
        gap: 10px;
    }
    
    .retro-grid {
        grid-template-columns: 1fr;
    }
    
    .article-title {
        font-size: 28px;
    }
    
    .article-meta {
        gap: 15px;
    }
    
    .retro-pagination {
        flex-direction: column;
        align-items: center;
    }
}