/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Microsoft YaHei', Arial, sans-serif;
}

:root {
    --primary-color: #1890ff;
    --dark-color: #001529;
    --text-color: #333;
    --light-text: #999;
    --border-color: #e8e8e8;
    --success-color: #52c41a;
    --warning-color: #faad14;
    --error-color: #f5222d;
    --bg-gray: #f0f2f5;
}

body {
    background-color: var(--bg-gray);
    color: var(--text-color);
    min-height: 100vh;
}

/* 布局 */
.container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 220px;
    background-color: var(--dark-color);
    color: white;
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    overflow-y: auto;
}

.main-content {
    flex: 1;
    margin-left: 220px;
    padding: 20px;
}

/* 顶部导航栏 */
.header {
    height: 64px;
    background: white;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 1px 4px rgba(0, 21, 41, 0.08);
    position: sticky;
    top: 0;
    z-index: 10;
}

.header .logo {
    height: 32px;
    margin-right: 24px;
    font-weight: bold;
    font-size: 18px;
    color: var(--primary-color);
}

.user-info {
    display: flex;
    align-items: center;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    margin-right: 8px;
    background-color: #ccc;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* 侧边栏菜单 */
.menu {
    padding: 16px 0;
}

.menu-header {
    padding: 16px;
    font-size: 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 16px;
}

.menu-item {
    padding: 12px 24px;
    cursor: pointer;
    transition: all 0.3s;
}

.menu-item:hover, .menu-item.active {
    background-color: #1a2d3c;
    color: var(--primary-color);
}

.menu-item i {
    margin-right: 10px;
}

/* 卡片组件 */
.card {
    background-color: white;
    border-radius: 4px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    margin-bottom: 20px;
}

.card-header {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    font-weight: bold;
}

.card-body {
    padding: 16px;
}

/* 表格样式 */
.table-responsive {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

table th, table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

table th {
    background-color: #fafafa;
    font-weight: 500;
}

table tr:hover {
    background-color: #fafafa;
}

/* 按钮样式 */
.btn {
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
    border: none;
}

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

.btn-primary:hover {
    background-color: #40a9ff;
}

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

.btn-success:hover {
    background-color: #73d13d;
}

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

.btn-warning:hover {
    background-color: #ffc53d;
}

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

.btn-danger:hover {
    background-color: #ff4d4f;
}

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

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    transition: all 0.3s;
}

.form-control:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
}

/* 提示消息 */
.alert {
    padding: 10px 16px;
    border-radius: 4px;
    margin-bottom: 16px;
}

.alert-success {
    background-color: #f6ffed;
    border: 1px solid #b7eb8f;
    color: var(--success-color);
}

.alert-warning {
    background-color: #fffbe6;
    border: 1px solid #ffe58f;
    color: var(--warning-color);
}

.alert-error {
    background-color: #fff2f0;
    border: 1px solid #ffccc7;
    color: var(--error-color);
}

/* 面包屑导航 */
.breadcrumb {
    margin-bottom: 16px;
    display: flex;
    align-items: center;
}

.breadcrumb-item {
    display: inline-block;
}

.breadcrumb-item:not(:last-child)::after {
    content: '/';
    margin: 0 8px;
    color: var(--light-text);
}

/* 标签页 */
.tabs {
    border-bottom: 1px solid var(--border-color);
    display: flex;
    margin-bottom: 16px;
}

.tab {
    padding: 12px 16px;
    cursor: pointer;
    transition: all 0.3s;
    margin-right: 32px;
}

.tab.active {
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: flex-end;
    margin-top: 16px;
}

.page-item {
    margin: 0 4px;
}

.page-link {
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
}

.page-link:hover, .page-link.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* 登录页样式 */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: var(--bg-gray);
}

.login-form {
    width: 380px;
    background-color: white;
    padding: 24px;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.login-title {
    text-align: center;
    margin-bottom: 24px;
    font-size: 24px;
    color: var(--dark-color);
}

/* 网格系统 */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -10px;
}

.col {
    padding: 0 10px;
}

.col-4 {
    flex: 0 0 33.333333%;
    max-width: 33.333333%;
}

.col-6 {
    flex: 0 0 50%;
    max-width: 50%;
}

.col-8 {
    flex: 0 0 66.666667%;
    max-width: 66.666667%;
}

.col-12 {
    flex: 0 0 100%;
    max-width: 100%;
}

/* 工具类 */
.text-right {
    text-align: right;
}

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

.mb-2 {
    margin-bottom: 10px;
}

.mt-2 {
    margin-top: 10px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .sidebar {
        width: 80px;
    }
    
    .main-content {
        margin-left: 80px;
    }
    
    .menu-item span {
        display: none;
    }
    
    .col-4, .col-6, .col-8 {
        flex: 0 0 100%;
        max-width: 100%;
    }
}