/* 拼贴艺术风格 - 石板灰色调 */
:root {
    --stone-dark: #3a3a3a;
    --stone-medium: #5a5a5a;
    --stone-light: #7a7a7a;
    --stone-accent: #8d6e63;
    --stone-text: #e0e0e0;
    --stone-highlight: #9e9e9e;
    --stone-border: 2px dashed rgba(255, 255, 255, 0.2);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Courier New', monospace;
}

body {
    background-color: var(--stone-dark);
    color: var(--stone-text);
    line-height: 1.6;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(255,255,255,0.05) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(255,255,255,0.05) 0%, transparent 20%);
}

a {
    text-decoration: none;
    color: var(--stone-highlight);
    transition: all 0.3s ease;
    position: relative;
}

a:hover {
    color: var(--stone-accent);
}

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

/* 拼贴风格头部 */
header {
    background-color: var(--stone-medium);
    padding: 25px 0;
    margin-bottom: 30px;
    border-bottom: var(--stone-border);
    position: relative;
    overflow: hidden;
}

header::before {
    content: "";
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    background: 
        linear-gradient(45deg, transparent 48%, var(--stone-accent) 49%, var(--stone-accent) 51%, transparent 52%),
        linear-gradient(-45deg, transparent 48%, var(--stone-accent) 49%, var(--stone-accent) 51%, transparent 52%);
    background-size: 20px 20px;
    opacity: 0.2;
    z-index: -1;
}

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

.logo {
    font-size: 28px;
    font-weight: bold;
    letter-spacing: 2px;
    background: linear-gradient(to right, var(--stone-highlight), var(--stone-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 15px;
    flex-wrap: wrap;
}

nav ul li a {
    padding: 8px 15px;
    background-color: rgba(0,0,0,0.2);
    border-radius: 3px;
    font-weight: bold;
    border: 1px solid var(--stone-light);
}

nav ul li a:hover {
    background-color: var(--stone-accent);
    color: white;
    transform: rotate(-2deg);
    box-shadow: 3px 3px 0 rgba(0,0,0,0.2);
}

/* 拼贴内容区域 */
.main-content {
    background-color: var(--stone-medium);
    padding: 30px;
    margin: 30px 0;
    border: var(--stone-border);
    position: relative;
    box-shadow: 5px 5px 0 rgba(0,0,0,0.2);
}

.main-content::after {
    content: "";
    position: absolute;
    top: 5px;
    left: 5px;
    right: 5px;
    bottom: 5px;
    border: 1px solid rgba(255,255,255,0.1);
    pointer-events: none;
}

.section-title {
    font-size: 24px;
    margin-bottom: 25px;
    padding-bottom: 10px;
    border-bottom: var(--stone-border);
    color: var(--stone-highlight);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* 拼贴网格布局 */
.collage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.collage-item {
    background-color: var(--stone-light);
    padding: 15px;
    border: 1px solid var(--stone-highlight);
    transition: all 0.3s ease;
    position: relative;
    transform-style: preserve-3d;
}

.collage-item:hover {
    transform: rotate(1deg) scale(1.02);
    box-shadow: 8px 8px 0 rgba(0,0,0,0.3);
    z-index: 2;
}

.collage-item:nth-child(odd) {
    background-color: var(--stone-medium);
}

.collage-item:nth-child(3n) {
    transform: rotate(-1deg);
}

.collage-item:nth-child(3n+1) {
    transform: rotate(2deg);
}

.collage-image {
    width: 100%;
    height: 160px;
    object-fit: cover;
    border: 1px solid var(--stone-dark);
    margin-bottom: 15px;
}

.collage-info {
    padding: 0 10px;
}

.collage-title {
    font-size: 18px;
    margin-bottom: 10px;
    font-weight: bold;
    color: white;
}

.collage-meta {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--stone-highlight);
    margin-top: 15px;
}

/* 分类标签 */
.category-label {
    display: inline-block;
    padding: 3px 10px;
    background-color: var(--stone-accent);
    color: white;
    border-radius: 3px;
    font-size: 12px;
    margin-bottom: 10px;
    transform: rotate(-2deg);
}

/* 文章详情页 */
.article-collage {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--stone-medium);
    padding: 30px;
    border: var(--stone-border);
    box-shadow: 5px 5px 0 rgba(0,0,0,0.2);
}

.article-header {
    margin-bottom: 30px;
    text-align: center;
    position: relative;
}

.article-header::after {
    content: "";
    display: block;
    width: 100px;
    height: 4px;
    background-color: var(--stone-accent);
    margin: 20px auto;
}

.article-title {
    font-size: 32px;
    margin-bottom: 15px;
    color: white;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    color: var(--stone-highlight);
    margin-bottom: 20px;
    font-size: 14px;
}

.article-image {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
    border: 1px solid var(--stone-dark);
    margin-bottom: 30px;
    box-shadow: 5px 5px 0 rgba(0,0,0,0.2);
}

.article-content {
    line-height: 1.8;
    font-size: 16px;
}

.article-content p {
    margin-bottom: 20px;
    padding: 0 10px;
}

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

.pagination a {
    padding: 10px 20px;
    background-color: var(--stone-light);
    color: var(--stone-text);
    border: 1px solid var(--stone-highlight);
    transform: rotate(-1deg);
}

.pagination a:hover {
    background-color: var(--stone-accent);
    color: white;
    transform: rotate(1deg) scale(1.1);
}

/* 友情链接 - 拼贴风格 */
.friend-links {
    background-color: var(--stone-medium);
    padding: 25px;
    margin: 30px 0;
    border: var(--stone-border);
    box-shadow: 5px 5px 0 rgba(0,0,0,0.2);
}

.friend-links h3 {
    margin-bottom: 20px;
    color: var(--stone-highlight);
    font-size: 20px;
    text-transform: uppercase;
}

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

.friend-links-container a {
    padding: 8px 15px;
    background-color: var(--stone-light);
    color: var(--stone-text);
    border: 1px solid var(--stone-highlight);
    transform: rotate(1deg);
    font-size: 14px;
}

.friend-links-container a:hover {
    background-color: var(--stone-accent);
    color: white;
    transform: rotate(-1deg) scale(1.1);
}

/* 页脚样式 */
footer {
    background-color: var(--stone-medium);
    padding: 30px 0;
    text-align: center;
    margin-top: 50px;
    border-top: var(--stone-border);
    position: relative;
}

footer::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 10px;
    background: 
        linear-gradient(45deg, transparent 33%, var(--stone-accent) 33%, var(--stone-accent) 66%, transparent 66%),
        linear-gradient(-45deg, transparent 33%, var(--stone-accent) 33%, var(--stone-accent) 66%, transparent 66%);
    background-size: 20px 40px;
    opacity: 0.3;
}

.copyright {
    font-size: 14px;
    color: var(--stone-highlight);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 20px;
    }
    
    nav ul {
        justify-content: center;
    }
    
    .collage-grid {
        grid-template-columns: 1fr;
    }
    
    .article-title {
        font-size: 26px;
    }
    
    .pagination {
        flex-wrap: wrap;
    }
}