/* 全局变量定义 */
:root {
    --primary: #165DFF;
    --primary-light: #E8F3FF;
    --primary-dark: #0E42C3;
    --secondary: #0FC6C2;
    --accent: #722ED1;
    --success: #00B42A;
    --warning: #FF7D00;
    --danger: #F53F3F;
    --text-primary: #1D2129;
    --text-secondary: #4E5969;
    --text-tertiary: #86909C;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F2F3F5;
    --bg-tertiary: #E5E6EB;
    --border: #C9CDD4;
    --shadow: 0 2px 14px 0 rgba(0, 0, 0, 0.06);
    --radius: 6px;
    --transition: all 0.3s ease;
}

/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
}

body {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.5;
    font-size: 14px;
}

/* 布局组件 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部导航 */
.header {
    background-color: var(--bg-primary);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo img {
    width: 36px;
    height: 36px;
}

.logo-text {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary);
}

.nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-item a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.nav-item a:hover, .nav-item a.active {
    color: var(--primary);
}

.user-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 16px;
    font-weight: 500;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

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

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

.btn-outline {
    background-color: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

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

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: 50%;
    background-color: transparent;
    color: var(--text-secondary);
}

.btn-icon:hover {
    background-color: var(--bg-secondary);
    color: var(--primary);
}

/* 卡片组件 */
.card {
    background-color: var(--bg-primary);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
}

.card:hover {
    box-shadow: 0 4px 20px 0 rgba(0, 0, 0, 0.08);
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: 20px;
}

/* 搜索组件 */
.search-box {
    display: flex;
    position: relative;
    width: 100%;
    max-width: 600px;
}

.search-input {
    flex: 1;
    padding: 12px 16px 12px 44px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(22, 93, 255, 0.1);
}

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
}

.search-btn {
    margin-left: 8px;
    white-space: nowrap;
}

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

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(22, 93, 255, 0.1);
}

/* 列表样式 */
.list-group {
    list-style: none;
}

.list-item {
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.list-item:last-child {
    border-bottom: none;
}

/* 页脚样式 */
.footer {
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border);
    padding: 40px 0 20px;
    margin-top: 60px;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 30px;
}

.footer-column {
    flex: 1;
    min-width: 200px;
}

.footer-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.footer-links {
    list-style: none;
}

.footer-link {
    margin-bottom: 10px;
}

.footer-link a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-link a:hover {
    color: var(--primary);
}

.footer-bottom {
    padding-top: 20px;
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--text-tertiary);
    font-size: 12px;
}

/* 页面通用样式 */
.page {
    padding: 30px 0;
}

.page-header {
    margin-bottom: 30px;
}

.page-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.page-description {
    color: var(--text-secondary);
}

/* 网格布局 */
.grid {
    display: grid;
    gap: 20px;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .nav-text {
        display: none;
    }
    
    .nav-list {
        gap: 15px;
    }
}

/* 搜索结果样式 */
.result-item {
    padding: 20px;
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

.result-item:hover {
    background-color: var(--bg-secondary);
}

.result-title {
    font-size: 18px;
    margin-bottom: 8px;
}

.result-title a {
    color: var(--primary);
    text-decoration: none;
}

.result-title a:hover {
    text-decoration: underline;
}

.result-meta {
    color: var(--text-tertiary);
    font-size: 12px;
    margin-bottom: 8px;
    display: flex;
    gap: 16px;
}

.result-excerpt {
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.result-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.result-tag {
    background-color: var(--primary-light);
    color: var(--primary);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    margin-top: 30px;
    gap: 8px;
}

.pagination-item {
    width: 46px;
    height: 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.pagination-item:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.pagination-item.active {
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* 标签样式 */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

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

.badge-success {
    background-color: rgba(0, 180, 42, 0.1);
    color: var(--success);
}

.badge-warning {
    background-color: rgba(255, 125, 0, 0.1);
    color: var(--warning);
}

.badge-danger {
    background-color: rgba(245, 63, 63, 0.1);
    color: var(--danger);
}

/* 图表容器 */
.chart-container {
    width: 100%;
    height: 300px;
    position: relative;
}