/* 自然极光主题 - 全新风格 */
:root {
    --aurora-green: #50e3c2;
    --aurora-blue: #4a90e2;
    --aurora-purple: #b06ab3;
    --deep-night: #0f172a;
    --midnight: #1e293b;
    --twilight: #334155;
    --dawn: #f8fafc;
    --transition: all 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

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

body {
    background-color: var(--deep-night);
    color: var(--dawn);
    line-height: 1.7;
    background-image: 
        radial-gradient(at 80% 0%, hsla(189, 100%, 56%, 0.15) 0px, transparent 50%),
        radial-gradient(at 0% 50%, hsla(355, 100%, 93%, 0.1) 0px, transparent 50%);
    min-height: 100vh;
}

::selection {
    background: var(--aurora-green);
    color: var(--deep-night);
}

/* 有机形状头部 */
header {
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(74, 144, 226, 0.2);
    clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%);
    padding-bottom: 2rem;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--aurora-green), var(--aurora-blue));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 1px;
    position: relative;
}

.logo::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--aurora-green), transparent);
    border-radius: 3px;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
}

.nav-links a {
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-weight: 500;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.nav-links a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(80, 227, 194, 0.2), transparent);
    transform: translateX(-100%);
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--aurora-green);
}

.nav-links a:hover::before {
    transform: translateX(0);
}

/* 波浪形内容容器 */
.main-container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.content-wave {
    background: rgba(30, 41, 59, 0.6);
    border-radius: 3rem;
    padding: 3rem;
    margin-bottom: 3rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: var(--transition);
}

.content-wave::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 0%,
        rgba(80, 227, 194, 0.05) 50%,
        transparent 100%
    );
    animation: aurora 20s linear infinite;
}

@keyframes aurora {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.content-wave:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.section-title {
    font-size: 2rem;
    margin-bottom: 2rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 50%;
    height: 4px;
    background: linear-gradient(90deg, var(--aurora-green), transparent);
    border-radius: 2px;
}

/* 有机卡片网格 */
.organic-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.organic-card {
    background: rgba(51, 65, 85, 0.4);
    border-radius: 2rem;
    padding: 1.5rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(80, 227, 194, 0.1);
}

.organic-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(80, 227, 194, 0.1) 0%,
        rgba(74, 144, 226, 0.1) 100%
    );
    opacity: 0;
    transition: var(--transition);
}

.organic-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(80, 227, 194, 0.2);
    border-color: rgba(80, 227, 194, 0.3);
}

.organic-card:hover::before {
    opacity: 1;
}

.card-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 1.5rem;
    margin-bottom: 1.5rem;
    transition: var(--transition);
}

.organic-card:hover .card-image {
    transform: scale(1.03);
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    position: relative;
    z-index: 2;
}

.card-excerpt {
    color: rgba(248, 250, 252, 0.7);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    position: relative;
    z-index: 2;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--aurora-green);
    position: relative;
    z-index: 2;
}

/* 文章详情页 */
.article-header {
    text-align: center;
    margin-bottom: 3rem;
}

.article-title {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(90deg, var(--aurora-green), var(--aurora-blue));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.3;
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.article-meta span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: rgba(248, 250, 252, 0.7);
}

.article-image {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    border-radius: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.article-content {
    line-height: 1.8;
    font-size: 1.1rem;
}

.article-content p {
    margin-bottom: 1.5rem;
}

.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 1.5rem;
    margin: 2rem 0;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

/* 分页导航 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 3rem;
}

.pagination a {
    padding: 0.75rem 1.5rem;
    border-radius: 2rem;
    background: rgba(51, 65, 85, 0.6);
    border: 1px solid rgba(80, 227, 194, 0.2);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pagination a:hover {
    background: rgba(80, 227, 194, 0.2);
    border-color: var(--aurora-green);
    transform: translateY(-3px);
}

/* 友情链接 */
.friend-links {
    margin: 3rem 0;
}

.friend-links h3 {
    margin-bottom: 1.5rem;
}

.friend-links-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.friend-links-grid a {
    padding: 0.5rem 1.5rem;
    border-radius: 2rem;
    background: rgba(51, 65, 85, 0.6);
    border: 1px solid rgba(74, 144, 226, 0.2);
    transition: var(--transition);
    font-size: 0.9rem;
}

.friend-links-grid a:hover {
    background: rgba(74, 144, 226, 0.2);
    border-color: var(--aurora-blue);
    transform: translateY(-3px);
}

/* 页脚 */
footer {
    background: linear-gradient(180deg, transparent, rgba(15, 23, 42, 0.8));
    padding: 3rem 0;
    text-align: center;
    margin-top: 5rem;
    clip-path: polygon(0 20%, 100% 0, 100% 100%, 0 100%);
    padding-top: 5rem;
}

.copyright {
    font-size: 0.9rem;
    color: rgba(248, 250, 252, 0.6);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .content-wave {
        padding: 2rem;
        border-radius: 2rem;
    }
    
    .organic-grid {
        grid-template-columns: 1fr;
    }
    
    .article-title {
        font-size: 2rem;
    }
}