/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
}

/* 主色调 */
:root {
    --color-primary: #800080; /* 正紫色 - 主色调 */
    --color-secondary: #FF69B4; /* 桃红色 - 强调元素 */
    --color-background: #FFFFFF; /* 白色 - 背景和文本区域 */
    --color-interactive: #0000FF; /* 蓝色 - 交互元素 */
    --color-text: #000000; /* 黑色 - 文字部分 */
    --color-text-light: #666666; /* 浅灰色 - 辅助文字 */
    --color-text-lighter: #999999; /* 更浅的灰色 - 次要文字 */
    --color-border: #E0E0E0; /* 边框颜色 */
    --color-hover: #F0F0F0; /* 悬停背景色 */
    --color-highlight: #FFF3CD; /* 高亮背景色 */
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部 */
header {
    background-color: var(--color-primary);
    color: var(--color-background);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    text-decoration: none;
    color: var(--color-background);
}

.logo span {
    color: var(--color-secondary);
}

.tagline {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 5px;
}

/* 导航 */
nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    color: var(--color-background);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: var(--color-secondary);
}

/* 搜索框 */
.search-container {
    margin-top: 15px;
    display: flex;
    justify-content: center;
}

.search-box {
    width: 100%;
    max-width: 600px;
    position: relative;
}

.search-box input {
    width: 100%;
    padding: 10px 40px 10px 15px;
    border: 1px solid var(--color-border);
    border-radius: 25px;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s ease;
}

.search-box input:focus {
    border-color: var(--color-secondary);
}

.search-box button {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-lighter);
    font-size: 1.2rem;
    transition: color 0.3s ease;
}

.search-box button:hover {
    color: var(--color-secondary);
}

/* 主要内容 */
main {
    padding: 40px 0;
}

.content-wrapper {
    display: flex;
    gap: 30px;
}

/* 博文列表 */
.blog-posts {
    flex: 3;
}

.post-card {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    padding: 30px;
    margin-bottom: 30px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.post-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.post-title {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--color-text);
}

.post-title a {
    text-decoration: none;
    color: var(--color-text);
    transition: color 0.3s ease;
}

.post-title a:hover {
    color: var(--color-secondary);
}

.post-meta {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.post-excerpt {
    margin-bottom: 20px;
    color: var(--color-text-light);
}

.read-more {
    display: inline-block;
    padding: 8px 16px;
    background-color: var(--color-secondary);
    color: var(--color-background);
    text-decoration: none;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.read-more:hover {
    background-color: var(--color-primary);
}

/* 侧边栏 */
.sidebar {
    flex: 1;
}

.widget {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    padding: 20px;
    margin-bottom: 30px;
}

.widget-title {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: var(--color-text);
    border-bottom: 2px solid var(--color-secondary);
    padding-bottom: 10px;
}

/* 分类和标签 */
.category-list, .tag-list {
    list-style: none;
}

.category-list li, .tag-list li {
    margin-bottom: 10px;
}

.category-list li a, .tag-list li a {
    text-decoration: none;
    color: var(--color-text-light);
    transition: color 0.3s ease;
    display: flex;
    justify-content: space-between;
}

.category-list li a:hover, .tag-list li a:hover {
    color: var(--color-secondary);
}

.tag-list li a {
    background-color: var(--color-hover);
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 0.8rem;
    margin-right: 5px;
    margin-bottom: 5px;
    display: inline-block;
}

.tag-list li a:hover {
    background-color: var(--color-secondary);
    color: var(--color-background);
}

/* 页脚 */
footer {
    background-color: var(--color-primary);
    color: var(--color-background);
    padding: 30px 0;
    margin-top: 50px;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.footer-links {
    margin: 20px 0;
}

.footer-links a {
    color: var(--color-background);
    text-decoration: none;
    margin: 0 10px;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--color-secondary);
}

.beian-links {
    margin-top: 20px;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

.beian-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.beian-links a:hover {
    color: var(--color-secondary);
}

/* 响应式设计 */
@media (max-width: 1199px) {
    .container {
        max-width: 960px;
    }
}

@media (max-width: 991px) {
    .container {
        max-width: 720px;
    }
    
    .content-wrapper {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .container {
        max-width: 540px;
    }
    
    .header-content {
        flex-direction: column;
        text-align: center;
    }

    nav ul {
        margin-top: 15px;
        justify-content: center;
    }

    nav ul li {
        margin: 0 10px;
    }

    .post-card {
        padding: 20px;
    }

    .search-box {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        max-width: 100%;
        padding: 0 15px;
    }
    
    .logo {
        font-size: 1.5rem;
    }

    .tagline {
        font-size: 0.9rem;
    }

    .post-title {
        font-size: 1.3rem;
    }

    .post-meta {
        flex-direction: column;
        gap: 5px;
    }
}

/* 高亮样式 */
.highlight {
    background-color: var(--color-highlight);
    padding: 0 3px;
    border-radius: 3px;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 回到顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: var(--color-secondary);
    color: var(--color-background);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.3s ease, background-color 0.3s ease;
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
}

.back-to-top:hover {
    background-color: var(--color-primary);
}

/* 面包屑导航 */
.breadcrumb {
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.breadcrumb a {
    color: var(--color-interactive);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb span {
    color: var(--color-text-light);
    margin: 0 5px;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-secondary);
}

.form-group textarea {
    height: 150px;
    resize: vertical;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-background);
}

.btn-primary:hover {
    background-color: #6a006a;
}

.btn-secondary {
    background-color: var(--color-secondary);
    color: var(--color-background);
}

.btn-secondary:hover {
    background-color: #ff4da6;
}

.btn-interactive {
    background-color: var(--color-interactive);
    color: var(--color-background);
}

.btn-interactive:hover {
    background-color: #0000cc;
}

/* 通知提示 */
.alert {
    padding: 15px;
    border-radius: 4px;
    margin-bottom: 20px;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeeba;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}