/* 3D动态交互风格全局样式 */
:root {
    --primary-3d: #4361ee;
    --secondary-3d: #3a0ca3;
    --accent-3d: #f72585;
    --dark-3d: #1a1a2e;
    --light-3d: #e2eafc;
    --text-3d: #ffffff;
    --neon-glow: 0 0 10px rgba(67, 97, 238, 0.8);
    --perspective: 1000px;
    --transition-3d: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

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

body {
    background: linear-gradient(-45deg, #1a1a2e, #16213e, #0f3460);
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
    color: var(--text-3d);
    perspective: var(--perspective);
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: var(--light-3d);
    transition: var(--transition-3d);
}

a:hover {
    color: var(--accent-3d);
    text-shadow: var(--neon-glow);
}

.container {
    width: 95%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 3D头部样式 */
header {
    background: rgba(26, 26, 46, 0.7);
    backdrop-filter: blur(10px);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(67, 97, 238, 0.3);
    box-shadow: 0 5px 30px rgba(0, 0, 0, 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, #4361ee, #4cc9f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 20px rgba(67, 97, 238, 0.5);
    letter-spacing: 2px;
    transform-style: preserve-3d;
}

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

nav ul li {
    transform-style: preserve-3d;
    perspective: 500px;
}

nav ul li a {
    padding: 10px 20px;
    border-radius: 30px;
    font-weight: 500;
    background: rgba(67, 97, 238, 0.2);
    border: 1px solid var(--primary-3d);
    display: inline-block;
    transform: translateZ(20px);
}

nav ul li a:hover {
    background: var(--primary-3d);
    transform: translateZ(30px) scale(1.1);
    box-shadow: var(--neon-glow);
}

/* 3D卡片内容区域 */
.main-content {
    background: rgba(26, 26, 46, 0.6);
    border-radius: 20px;
    padding: 40px;
    margin: 40px 0;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(67, 97, 238, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transform-style: preserve-3d;
    transform: translateZ(0);
    transition: var(--transition-3d);
}

.main-content:hover {
    transform: translateZ(10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.section-title {
    font-size: 32px;
    margin-bottom: 30px;
    position: relative;
    display: inline-block;
    transform: translateZ(30px);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(to right, var(--primary-3d), var(--accent-3d));
    border-radius: 3px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s ease;
}

.main-content:hover .section-title::after {
    transform: scaleX(1);
}

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

.article-3d-card {
    background: linear-gradient(145deg, #1a1a2e, #16213e);
    border-radius: 15px;
    overflow: hidden;
    transform-style: preserve-3d;
    transform: translateZ(0);
    transition: var(--transition-3d);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(67, 97, 238, 0.3);
    animation: float 6s ease-in-out infinite;
}

.article-3d-card:nth-child(2n) {
    animation-delay: 0.3s;
}

.article-3d-card:nth-child(3n) {
    animation-delay: 0.6s;
}

.article-3d-card:hover {
    transform: translateZ(20px) rotateX(5deg) rotateY(5deg);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), var(--neon-glow);
    animation-play-state: paused;
}

.card-3d-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 1px solid rgba(67, 97, 238, 0.3);
    transform: translateZ(0);
    transition: var(--transition-3d);
}

.article-3d-card:hover .card-3d-image {
    transform: translateZ(10px) scale(1.05);
}

.card-3d-body {
    padding: 25px;
    transform: translateZ(0);
    transition: var(--transition-3d);
}

.article-3d-card:hover .card-3d-body {
    transform: translateZ(15px);
}

.card-3d-title {
    font-size: 20px;
    margin-bottom: 15px;
    font-weight: 600;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transform: translateZ(0);
}

.card-3d-meta {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    color: var(--light-3d);
    margin-top: 20px;
    opacity: 0.8;
    transform: translateZ(0);
}

/* 3D分类标签 */
.a3d-category-tag {
    display: inline-block;
    padding: 5px 15px;
    background: linear-gradient(to right, var(--primary-3d), var(--secondary-3d));
    color: white;
    border-radius: 20px;
    font-size: 12px;
    margin-bottom: 15px;
    transform: translateZ(10px);
    box-shadow: 0 4px 10px rgba(67, 97, 238, 0.3);
}

/* 3D文章详情页 */
.article-3d-detail {
    max-width: 900px;
    margin: 0 auto;
    transform-style: preserve-3d;
}

.article-3d-header {
    margin-bottom: 50px;
    text-align: center;
    transform: translateZ(0);
}

.article-3d-title {
    font-size: 42px;
    margin-bottom: 25px;
    line-height: 1.3;
    background: linear-gradient(to right, #fff, #a5b4fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 20px rgba(67, 97, 238, 0.3);
    transform: translateZ(30px);
}

.article-3d-meta {
    display: flex;
    justify-content: center;
    gap: 30px;
    color: var(--light-3d);
    margin-bottom: 30px;
    flex-wrap: wrap;
    transform: translateZ(20px);
}

.article-3d-image {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    border-radius: 15px;
    margin-bottom: 40px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
    transform: translateZ(0);
    transition: var(--transition-3d);
}

.article-3d-image:hover {
    transform: translateZ(20px) rotateX(5deg);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5), var(--neon-glow);
}

.article-3d-content {
    line-height: 1.9;
    font-size: 18px;
    transform: translateZ(0);
}

.article-3d-content p {
    margin-bottom: 25px;
    transform: translateZ(0);
}

.article-3d-content img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    margin: 30px 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transform: translateZ(0);
    transition: var(--transition-3d);
}

.article-3d-content img:hover {
    transform: translateZ(15px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), var(--neon-glow);
}

/* 3D分页导航 */
.pagination-3d {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 50px;
    transform-style: preserve-3d;
}

.pagination-3d a {
    padding: 12px 25px;
    border-radius: 30px;
    background: linear-gradient(145deg, #1a1a2e, #16213e);
    border: 1px solid var(--primary-3d);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transform: translateZ(0);
    transition: var(--transition-3d);
}

.pagination-3d a:hover {
    background: linear-gradient(to right, var(--primary-3d), var(--secondary-3d));
    transform: translateZ(20px) scale(1.05);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3), var(--neon-glow);
}

/* 3D友情链接 */
.friend-links-3d {
    background: linear-gradient(145deg, #1a1a2e, #16213e);
    border-radius: 15px;
    padding: 30px;
    margin: 40px 0;
    border: 1px solid rgba(67, 97, 238, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transform-style: preserve-3d;
    transform: translateZ(0);
    transition: var(--transition-3d);
}

.friend-links-3d:hover {
    transform: translateZ(10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4), var(--neon-glow);
}

.friend-links-3d h3 {
    margin-bottom: 25px;
    font-size: 24px;
    background: linear-gradient(to right, #fff, #a5b4fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transform: translateZ(20px);
}

.friend-links-3d-container {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    transform: translateZ(0);
}

.friend-links-3d-container a {
    padding: 10px 20px;
    background: rgba(67, 97, 238, 0.2);
    border-radius: 30px;
    font-size: 14px;
    border: 1px solid var(--primary-3d);
    transform: translateZ(0);
    transition: var(--transition-3d);
}

.friend-links-3d-container a:hover {
    background: var(--primary-3d);
    transform: translateZ(15px);
    box-shadow: var(--neon-glow);
}

/* 3D页脚样式 */
footer {
    background: linear-gradient(to right, #1a1a2e, #16213e);
    padding: 40px 0;
    text-align: center;
    margin-top: 60px;
    border-top: 1px solid rgba(67, 97, 238, 0.3);
    box-shadow: 0 -5px 30px rgba(0, 0, 0, 0.3);
    transform-style: preserve-3d;
}

.copyright {
    font-size: 14px;
    color: var(--light-3d);
    transform: translateZ(20px);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .article-3d-title {
        font-size: 36px;
    }
    
    .article-3d-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 20px;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    
    .article-3d-title {
        font-size: 28px;
    }
    
    .article-3d-meta {
        gap: 15px;
    }
    
    .main-content {
        padding: 30px 20px;
    }
}