/* 3D霓虹主题全局样式 */
:root {
    --neon-pink: #ff2a6d;
    --neon-blue: #05d9e8;
    --neon-purple: #d300c5;
    --dark-bg: #0d0221;
    --darker-bg: #070115;
    --text-light: #ffffff;
    --text-glow: 0 0 10px var(--neon-pink), 0 0 20px var(--neon-blue);
    --box-glow: 0 0 15px var(--neon-pink), 0 0 30px var(--neon-purple);
    --transition: all 0.5s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Rajdhani', 'Arial Narrow', sans-serif;
}

body {
    background-color: var(--dark-bg);
    color: var(--text-light);
    min-height: 100vh;
    overflow-x: hidden;
    perspective: 1000px;
}

/* 3D浮动背景元素 */
.bg-element {
    position: fixed;
    border-radius: 50%;
    background: radial-gradient(circle, var(--neon-pink), transparent 70%);
    opacity: 0.3;
    z-index: -1;
    animation: float 15s infinite linear;
}

@keyframes float {
    0%, 100% { transform: translate3d(0,0,0) rotate(0deg); }
    25% { transform: translate3d(50px,50px,50px) rotate(90deg); }
    50% { transform: translate3d(0,100px,100px) rotate(180deg); }
    75% { transform: translate3d(-50px,50px,50px) rotate(270deg); }
}

/* 动态头部样式 */
header {
    background-color: rgba(13, 2, 33, 0.85);
    backdrop-filter: blur(10px);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--neon-blue);
    box-shadow: 0 0 20px rgba(5, 217, 232, 0.3);
    transform-style: preserve-3d;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.logo {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(45deg, var(--neon-pink), var(--neon-blue));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: var(--text-glow);
    transition: var(--transition);
}

.logo:hover {
    transform: rotateY(20deg) scale(1.1);
}

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

nav ul li a {
    color: var(--text-light);
    padding: 10px 15px;
    border-radius: 30px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

nav ul li a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--neon-pink), transparent);
    transition: 0.5s;
}

nav ul li a:hover {
    background: var(--neon-pink);
    box-shadow: 0 0 10px var(--neon-pink), 0 0 20px var(--neon-purple);
    transform: translateY(-5px);
}

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

/* 3D卡片内容区 */
.main-container {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
    transform-style: preserve-3d;
}

.main-content {
    background: rgba(7, 1, 21, 0.7);
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 40px;
    backdrop-filter: blur(5px);
    border: 1px solid var(--neon-blue);
    box-shadow: var(--box-glow);
    transition: var(--transition);
    transform: translateZ(30px);
}

.main-content:hover {
    transform: translateZ(50px) rotateX(5deg);
    box-shadow: 0 0 30px var(--neon-pink), 0 0 60px var(--neon-purple);
}

.section-title {
    font-size: 2.2rem;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--neon-blue);
    background: linear-gradient(90deg, var(--neon-pink), var(--neon-blue));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: var(--text-glow);
}

/* 3D文章网格 */
.article-grid-3d {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    perspective: 1000px;
}

.article-card-3d {
    background: rgba(13, 2, 33, 0.8);
    border-radius: 15px;
    overflow: hidden;
    transition: var(--transition);
    transform-style: preserve-3d;
    border: 1px solid var(--neon-purple);
    box-shadow: 0 0 15px rgba(211, 0, 197, 0.3);
    position: relative;
}

.article-card-3d::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--neon-pink), var(--neon-blue));
}

.article-card-3d:hover {
    transform: rotateY(15deg) translateY(-10px) scale(1.05);
    box-shadow: 0 10px 30px var(--neon-purple), 0 15px 40px var(--neon-pink);
}

.card-image-3d {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 1px solid var(--neon-blue);
    transition: var(--transition);
}

.article-card-3d:hover .card-image-3d {
    transform: scale(1.1);
}

.card-body-3d {
    padding: 20px;
    transform: translateZ(30px);
}

.card-title-3d {
    font-size: 1.3rem;
    margin-bottom: 15px;
    background: linear-gradient(45deg, var(--neon-pink), var(--neon-blue));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    transition: var(--transition);
}

.article-card-3d:hover .card-title-3d {
    text-shadow: var(--text-glow);
}

.card-meta-3d {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    color: var(--neon-blue);
    margin-top: 15px;
}

/* 3D分类标签 */
.category-tag-3d {
    display: inline-block;
    padding: 5px 15px;
    background: linear-gradient(45deg, var(--neon-purple), var(--neon-pink));
    color: white;
    border-radius: 30px;
    font-size: 0.8rem;
    margin-bottom: 15px;
    transform: translateZ(20px);
    box-shadow: 0 0 10px var(--neon-purple);
}

/* 3D文章详情 */
.article-detail-3d {
    max-width: 800px;
    margin: 0 auto;
    transform-style: preserve-3d;
}

.article-header-3d {
    margin-bottom: 40px;
    text-align: center;
    transform: translateZ(40px);
}

.article-title-3d {
    font-size: 2.5rem;
    margin-bottom: 20px;
    background: linear-gradient(45deg, var(--neon-pink), var(--neon-blue));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: var(--text-glow);
}

.article-meta-3d {
    display: flex;
    justify-content: center;
    gap: 25px;
    color: var(--neon-blue);
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.article-image-3d {
    width: 100%;
    max-height: 450px;
    object-fit: cover;
    border-radius: 15px;
    margin-bottom: 30px;
    border: 1px solid var(--neon-blue);
    box-shadow: var(--box-glow);
    transition: var(--transition);
}

.article-image-3d:hover {
    transform: rotateY(10deg) scale(1.02);
}

.article-content-3d {
    line-height: 1.8;
    font-size: 1.1rem;
    transform: translateZ(30px);
}

.article-content-3d p {
    margin-bottom: 20px;
}

.article-content-3d img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    margin: 20px 0;
    border: 1px solid var(--neon-blue);
    box-shadow: 0 0 15px var(--neon-purple);
}

/* 3D分页导航 */
.pagination-3d {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 40px;
    transform-style: preserve-3d;
}

.pagination-3d a {
    padding: 12px 25px;
    border-radius: 30px;
    background: rgba(13, 2, 33, 0.8);
    border: 1px solid var(--neon-blue);
    color: var(--neon-blue);
    transition: var(--transition);
    transform: translateZ(20px);
    position: relative;
    overflow: hidden;
}

.pagination-3d a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--neon-blue), transparent);
    transition: 0.5s;
}

.pagination-3d a:hover {
    background: var(--neon-blue);
    color: var(--dark-bg);
    box-shadow: 0 0 15px var(--neon-blue), 0 0 30px var(--neon-purple);
    transform: translateZ(40px) rotateX(15deg);
}

.pagination-3d a:hover::before {
    left: 100%;
}

/* 3D友情链接 */
.friend-links-3d {
    background: rgba(13, 2, 33, 0.8);
    border-radius: 15px;
    padding: 25px;
    margin: 40px 0;
    backdrop-filter: blur(5px);
    border: 1px solid var(--neon-purple);
    box-shadow: var(--box-glow);
    transform-style: preserve-3d;
    transform: translateZ(30px);
}

.friend-links-3d h3 {
    margin-bottom: 20px;
    font-size: 1.5rem;
    background: linear-gradient(45deg, var(--neon-pink), var(--neon-blue));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: var(--text-glow);
}

.friend-links-container-3d {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    transform-style: preserve-3d;
}

.friend-links-container-3d a {
    padding: 10px 20px;
    background: rgba(13, 2, 33, 0.8);
    border-radius: 30px;
    font-size: 0.9rem;
    border: 1px solid var(--neon-pink);
    color: var(--neon-pink);
    transition: var(--transition);
    transform: translateZ(20px);
}

.friend-links-container-3d a:hover {
    background: var(--neon-pink);
    color: var(--dark-bg);
    box-shadow: 0 0 15px var(--neon-pink), 0 0 30px var(--neon-purple);
    transform: translateZ(40px) rotateY(15deg);
}

/* 3D页脚 */
footer {
    background-color: var(--darker-bg);
    padding: 30px 0;
    text-align: center;
    margin-top: 50px;
    border-top: 1px solid var(--neon-blue);
    box-shadow: 0 0 20px rgba(5, 217, 232, 0.3);
    transform-style: preserve-3d;
}

.copyright {
    font-size: 0.9rem;
    color: var(--neon-blue);
    text-shadow: 0 0 5px var(--neon-blue);
}

/* 3D背景元素 */
.bg-element-1 {
    width: 300px;
    height: 300px;
    top: -150px;
    left: -150px;
    animation-duration: 20s;
}

.bg-element-2 {
    width: 200px;
    height: 200px;
    bottom: -100px;
    right: -100px;
    animation-duration: 25s;
    animation-delay: 5s;
}

.bg-element-3 {
    width: 150px;
    height: 150px;
    top: 30%;
    right: -75px;
    animation-duration: 18s;
    animation-delay: 10s;
}

/* 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-3d {
        grid-template-columns: 1fr;
    }
    
    .article-title-3d {
        font-size: 1.8rem;
    }
    
    .article-meta-3d {
        gap: 15px;
    }
    
    .pagination-3d {
        flex-direction: column;
        align-items: center;
    }
}