/* 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: #333;
    background-color: #f5f5f5;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

a {
    color: #007bff;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* 头部样式 */
.main-header {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 15px 0;
}

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

.site-title {
    font-size: 24px;
    font-weight: 700;
}

.site-title a {
    color: #333;
    text-decoration: none;
}

.main-nav ul {
    display: flex;
    list-style: none;
}

.main-nav li {
    margin-left: 20px;
}

.main-nav a {
    color: #333;
    text-decoration: none;
    font-weight: 500;
}

.main-nav a:hover {
    color: #007bff;
}

/* 主内容区域 */
.main-content {
    padding: 30px 0;
}

.welcome-section {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.welcome-section h2 {
    font-size: 28px;
    margin-bottom: 10px;
    color: #007bff;
}

/* 分类部分 */
.category-section {
    margin-bottom: 30px;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 20px;
}

.category-title {
    font-size: 22px;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
    color: #333;
}

.sites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
}

.site-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 15px;
    background-color: #f9f9f9;
    border-radius: 5px;
    transition: transform 0.2s, box-shadow 0.2s;
    text-decoration: none;
    color: #333;
}

.site-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    text-decoration: none;
}

.site-icon {
    margin-bottom: 10px;
}

.site-icon img {
    width: 50px;
    height: 50px;
    object-fit: contain;
    border-radius: 5px;
}

.site-info {
    text-align: center;
}

.site-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 5px;
}

.site-description {
    font-size: 12px;
    color: #666;
}

/* 页脚样式 */
.main-footer {
    background-color: #333;
    color: #fff;
    padding: 20px 0;
    text-align: center;
    margin-top: 30px;
}

/* 管理员登录页面 */
.admin-login {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #f5f5f5;
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 30px;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.login-container h1 {
    text-align: center;
    margin-bottom: 20px;
    color: #333;
}

.login-form {
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: #007bff;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    text-align: center;
}

.btn-primary {
    background-color: #007bff;
}

.btn-secondary {
    background-color: #6c757d;
}

.btn-danger {
    background-color: #dc3545;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 14px;
}

.btn:hover {
    opacity: 0.9;
    text-decoration: none;
}

.alert {
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 4px;
}

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

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

.back-link {
    text-align: center;
    margin-top: 20px;
}

/* 管理页面样式 */
.admin-page {
    background-color: #f5f5f5;
    min-height: 100vh;
}

.admin-container {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: 250px;
    background-color: #343a40;
    color: #fff;
    padding: 20px 0;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
}

.admin-logo {
    padding: 0 20px;
    margin-bottom: 20px;
    text-align: center;
}

.admin-logo h2 {
    font-size: 20px;
    font-weight: 700;
}

.admin-nav ul {
    list-style: none;
}

.admin-nav li {
    margin-bottom: 5px;
}

.admin-nav a {
    display: block;
    padding: 10px 20px;
    color: #fff;
    text-decoration: none;
    transition: background-color 0.2s;
}

.admin-nav a:hover {
    background-color: #495057;
}

.admin-footer {
    padding: 20px;
    margin-top: auto;
    font-size: 14px;
    color: #adb5bd;
    text-align: center;
}

.admin-content {
    flex: 1;
    padding: 20px;
    margin-left: 250px;
}

.admin-content h1 {
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid #ddd;
}

.action-buttons {
    margin-bottom: 20px;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

.admin-table th,
.admin-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.admin-table th {
    background-color: #f8f9fa;
    font-weight: 600;
}

.admin-table tr:hover {
    background-color: #f5f5f5;
}

.admin-form {
    background-color: #fff;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    max-width: 800px;
}

.current-icon {
    margin-bottom: 10px;
}

/* 统计卡片 */
.stats-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background-color: #fff;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.stat-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #6c757d;
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: #007bff;
}

.chart-container {
    background-color: #fff;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(
.chart-container {
    background-color: #fff;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}

.chart-container h2 {
    margin-bottom: 15px;
    font-size: 20px;
}

.stats-tables {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
}

.stats-table {
    background-color: #fff;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.stats-table h2 {
    margin-bottom: 15px;
    font-size: 20px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .sites-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
    
    .admin-container {
        flex-direction: column;
    }
    
    .admin-sidebar {
        width: 100%;
        position: static;
        padding: 10px 0;
    }
    
    .admin-content {
        margin-left: 0;
    }
    
    .admin-nav a {
        padding: 8px 15px;
    }
    
    .stats-cards {
        grid-template-columns: 1fr;
    }
    
    .stats-tables {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .main-header .container {
        flex-direction: column;
        text-align: center;
    }
    
    .main-nav {
        margin-top: 15px;
    }
    
    .main-nav ul {
        justify-content: center;
    }
    
    .main-nav li {
        margin: 0 10px;
    }
    
    .site-card {
        padding: 10px;
    }
    
    .site-icon img {
        width: 40px;
        height: 40px;
    }
    
    .site-title {
        font-size: 14px;
    }
    
    .site-description {
        font-size: 11px;
    }
}
.site-clicks {
    font-size: 12px;
    color: #888;
    margin-top: 5px;
}