/* 科幻主题全局样式 */
:root {
    --neon-blue: #0ff0fc;
    --neon-purple: #bc13fe;
    --neon-pink: #ff44cc;
    --dark-space: #0a0a1a;
    --deep-space: #121230;
    --star-light: rgba(255, 255, 255, 0.8);
    --text-glow: 0 0 10px var(--neon-blue), 0 0 20px var(--neon-purple);
    --box-glow: 0 0 15px rgba(188, 19, 254, 0.7);
    --font-main: 'Orbitron', 'Arial Narrow', sans-serif;
}

@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700&display=swap');

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

body {
    font-family: var(--font-main);
    background-color: var(--dark-space);
    color: var(--star-light);
    line-height: 1.6;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(188, 19, 254, 0.1) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(15, 240, 252, 0.1) 0%, transparent 20%);
    min-height: 100vh;
}

a {
    text-decoration: none;
    color: var(--neon-blue);
    transition: all 0.3s ease;
    text-shadow: var(--text-glow);
}

a:hover {
    color: var(--neon-pink);
}

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

/* 头部样式 - 科幻导航 */
header {
    background-color: rgba(10, 10, 26, 0.9);
    backdrop-filter: blur(8px);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--neon-purple);
    box-shadow: 0 0 20px rgba(188, 19, 254, 0.3);
}

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

.logo {
    font-size: 28px;
    font-weight: 700;
    background: linear-gradient(to right, var(--neon-blue), var(--neon-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 2px;
    text-shadow: var(--text-glow);
    position: relative;
}

.logo::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(to right, var(--neon-blue), var(--neon-pink));
    box-shadow: var(--box-glow);
}

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

nav ul li a {
    padding: 8px 15px;
    border-radius: 4px;
    font-weight: 500;
    letter-spacing: 1px;
    position: relative;
}

nav ul li a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--neon-blue);
    transition: width 0.3s ease;
}

nav ul li a:hover::before {
    width: 100%;
}

/* 主要内容区域 */
.main-content {
    background-color: rgba(18, 18, 48, 0.7);
    border-radius: 8px;
    padding: 30px;
    margin: 30px 0;
    border: 1px solid var(--neon-purple);
    box-shadow: var(--box-glow);
    position: relative;
    overflow: hidden;
}

.main-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(45deg, transparent 48%, var(--neon-purple) 49%, var(--neon-purple) 51%, transparent 52%),
        linear-gradient(-45deg, transparent 48%, var(--neon-purple) 49%, var(--neon-purple) 51%, transparent 52%);
    background-size: 10px 10px;
    opacity: 0.1;
    pointer-events: none;
}

.section-title {
    font-size: 26px;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--neon-blue);
    color: var(--neon-blue);
    text-shadow: var(--text-glow);
    letter-spacing: 1px;
    position: relative;
}

.section-title::after {
    content: '//';
    position: absolute;
    right: 0;
    bottom: 10px;
    color: var(--neon-pink);
    font-weight: bold;
}

/* 网格布局 - 科幻文章列表 */
.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.article-card {
    background-color: rgba(18, 18, 48, 0.9);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid var(--neon-blue);
    box-shadow: 0 0 10px rgba(15, 240, 252, 0.3);
    position: relative;
}

.article-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 0 20px rgba(15, 240, 252, 0.5);
    border-color: var(--neon-pink);
}

.article-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(45deg, transparent 48%, var(--neon-blue) 49%, var(--neon-blue) 51%, transparent 52%),
        linear-gradient(-45deg, transparent 48%, var(--neon-blue) 49%, var(--neon-blue) 51%, transparent 52%);
    background-size: 10px 10px;
    opacity: 0.1;
    pointer-events: none;
}

.card-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-bottom: 1px solid var(--neon-blue);
    filter: grayscale(30%) contrast(120%);
    transition: filter 0.3s ease;
}

.article-card:hover .card-image {
    filter: grayscale(0%) contrast(100%);
}

.card-body {
    padding: 20px;
}

.card-title {
    font-size: 18px;
    margin-bottom: 12px;
    font-weight: 600;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    color: var(--star-light);
}

.card-meta {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: var(--neon-blue);
    margin-top: 15px;
}

/* 分类标签 */
.category-tag {
    display: inline-block;
    padding: 3px 10px;
    background-color: var(--neon-purple);
    color: white;
    border-radius: 15px;
    font-size: 12px;
    margin-bottom: 10px;
    text-shadow: 0 0 5px rgba(255, 255, 255, 0.8);
}

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

.article-header {
    margin-bottom: 40px;
    text-align: center;
    position: relative;
}

.article-header::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--neon-blue), transparent);
}

.article-title {
    font-size: 32px;
    margin-bottom: 20px;
    line-height: 1.3;
    color: var(--neon-blue);
    text-shadow: var(--text-glow);
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 25px;
    color: var(--neon-pink);
    margin-bottom: 25px;
    flex-wrap: wrap;
    font-size: 14px;
}

.article-image {
    width: 100%;
    max-height: 450px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 30px;
    border: 1px solid var(--neon-blue);
    box-shadow: var(--box-glow);
    filter: contrast(110%) saturate(120%);
}

.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-radius: 8px;
    margin: 20px 0;
    border: 1px solid var(--neon-blue);
    box-shadow: var(--box-glow);
}

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

.pagination a {
    padding: 10px 20px;
    border-radius: 4px;
    background-color: rgba(18, 18, 48, 0.9);
    border: 1px solid var(--neon-blue);
    transition: all 0.3s;
    font-size: 14px;
}

.pagination a:hover {
    background-color: var(--neon-blue);
    color: var(--dark-space);
    text-shadow: none;
}

/* 友情链接 */
.friend-links {
    background-color: rgba(18, 18, 48, 0.9);
    border-radius: 8px;
    padding: 25px;
    margin: 30px 0;
    border: 1px solid var(--neon-purple);
    box-shadow: var(--box-glow);
}

.friend-links h3 {
    margin-bottom: 20px;
    color: var(--neon-blue);
    font-size: 20px;
    text-shadow: var(--text-glow);
}

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

.friend-links-container a {
    padding: 8px 15px;
    background-color: rgba(18, 18, 48, 0.9);
    border-radius: 4px;
    font-size: 14px;
    border: 1px solid var(--neon-blue);
}

.friend-links-container a:hover {
    background-color: var(--neon-blue);
    color: var(--dark-space);
    text-shadow: none;
}

/* 页脚样式 */
footer {
    background-color: rgba(10, 10, 26, 0.9);
    padding: 30px 0;
    text-align: center;
    margin-top: 50px;
    border-top: 1px solid var(--neon-purple);
    box-shadow: 0 0 20px rgba(188, 19, 254, 0.3);
}

.copyright {
    font-size: 14px;
    color: var(--neon-blue);
}

/* 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-grid {
        grid-template-columns: 1fr;
    }
    
    .article-title {
        font-size: 26px;
    }
    
    .article-meta {
        gap: 15px;
    }
}