/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('bg.jpg'); /* 请替换为您的背景图片路径 */
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0.2; /* 20% 透明度 */
    z-index: -1; /* 确保背景在内容后面 */
}

/* 头部样式 */
header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.blog-title {
    font-size: 2.5rem;
    font-weight: 300;
    margin-bottom: 10px;
    color: #222;
}

.blog-description {
    font-size: 1rem;
    color: #666;
    font-weight: 300;
}

/* 导航样式 */
nav {
    margin: 20px 0 40px;
}

nav ul {
    display: flex;
    justify-content: center;
    list-style: none;
}

nav li {
    margin: 0 15px;
}

nav a {
    text-decoration: none;
    color: #555;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color 0.3s;
}

nav a:hover {
    color: #9873f7; /* 紫色悬停效果 */
}

/* 主要内容区域 */
main {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
}

/* 文章列表样式 */
.posts {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.post {
    background: white;
    padding: 30px;
    border-radius: 4px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    transition: transform 0.3s, box-shadow 0.3s;
    border-left: 3px solid #9873f7; /* 添加紫色左侧边框 */
}

.post:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(152, 115, 247, 0.1); /* 紫色阴影效果 */
}

.post-title {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: #222;
}

.post-meta {
    font-size: 0.8rem;
    color: #888;
    margin-bottom: 15px;
}

.post-excerpt {
    margin-bottom: 15px;
    color: #555;
}

.read-more {
    display: inline-block;
    color: #9873f7; /* 紫色链接 */
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px solid #ddd;
    padding-bottom: 2px;
    transition: border-color 0.3s;
}

.read-more:hover {
    border-bottom-color: #9873f7; /* 紫色下划线 */
}

/* 侧边栏样式 */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.sidebar-section {
    background: white;
    padding: 25px;
    border-radius: 4px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    border-top: 2px solid #9873f7; /* 紫色顶部边框 */
}

.sidebar-title {
    font-size: 1.1rem;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
    color: #222;
}

.about-text {
    font-size: 0.9rem;
    color: #555;
    line-height: 1.5;
}

.categories-list {
    list-style: none;
}

.categories-list li {
    margin-bottom: 8px;
}

.categories-list a {
    color: #555;
    text-decoration: none;
    transition: color 0.3s;
    display: block;
    padding: 5px 0;
}

.categories-list a:hover {
    color: #9873f7; /* 紫色悬停效果 */
    padding-left: 5px;
}

/* 订阅表单样式 */
.subscribe-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 15px;
}

.subscribe-form input {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 0.9rem;
}

.subscribe-form button {
    padding: 10px;
    background-color: #9873f7; /* 紫色按钮 */
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background-color 0.3s;
}

.subscribe-form button:hover {
    background-color: #7a5bd6; /* 深紫色悬停效果 */
}

/* 页脚样式 */
footer {
    text-align: center;
    margin-top: 60px;
    padding-top: 20px;
    border-top: 1px solid #eee;
    color: #888;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    main {
        grid-template-columns: 1fr;
    }
    
    nav ul {
        flex-direction: column;
        align-items: center;
    }
    
    nav li {
        margin: 5px 0;
    }
    
    .post {
        padding: 20px;
    }
    
    .sidebar-section {
        padding: 20px;
    }
}