:root {
    --primary-color: #1890ff;
    --secondary-color: #fa8c16;
    --text-color: #333333;
    --bg-color: #ffffff;
    --border-color: #d9d9d9;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --success-color: #52c41a;
    --error-color: #ff4d4f;
    --warning-color: #faad14;
    --info-color: #1890ff;
}

[data-theme="dark"] {
    --primary-color: #40a9ff;
    --secondary-color: #fa8c16;
    --text-color: #ffffff;
    --bg-color: #141414;
    --border-color: #434343;
    --shadow-color: rgba(0, 0, 0, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* 通用布局样式 */
.app-container {
    display: flex;
    height: 100vh;
}

/* 侧边栏样式 */
.sidebar {
    width: 240px;
    background-color: var(--bg-color);
    border-right: 1px solid var(--border-color);
    padding: 20px 0;
    display: flex;
    flex-direction: column;
    transition: all 0.3s ease;
}

.sidebar-header {
    padding: 0 20px 20px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h1 {
    color: var(--primary-color);
    font-size: 20px;
    font-weight: 600;
}

.nav-menu {
    flex: 1;
    padding: 20px 0;
}

.nav-item {
    padding: 12px 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    color: var(--text-color);
    text-decoration: none;
}

.nav-item:hover {
    background-color: rgba(24, 144, 255, 0.1);
    color: var(--primary-color);
}

.nav-item.active {
    background-color: rgba(24, 144, 255, 0.2);
    color: var(--primary-color);
    border-right: 3px solid var(--primary-color);
}

.nav-item-icon {
    margin-right: 12px;
    font-size: 18px;
}

/* 主内容区域 */
.main-layout {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.header {
    height: 64px;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 8px var(--shadow-color);
}

.header-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-color);
}

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

.user-info span {
    margin-right: 16px;
    color: var(--text-color);
}

.logout-btn {
    color: var(--error-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.logout-btn:hover {
    text-decoration: underline;
}

.main-content {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
}

/* 登录页面样式 */
.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-form-wrapper {
    background-color: var(--bg-color);
    border-radius: 8px;
    box-shadow: 0 4px 12px var(--shadow-color);
    padding: 30px;
    border: 1px solid var(--border-color);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    color: var(--primary-color);
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
}

.login-header p {
    color: var(--text-color);
    opacity: 0.8;
}

.login-form {
    display: flex;
    flex-direction: column;
}

.form-item {
    margin-bottom: 20px;
    position: relative;
}

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

.form-item input,
.form-item select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 14px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

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

.login-btn {
    width: 100%;
    padding: 10px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.login-btn:hover {
    background-color: #40a9ff;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(24, 144, 255, 0.3);
}

.login-btn:active {
    transform: translateY(0);
}

.error-message {
    color: var(--error-color);
    margin-top: 15px;
    font-size: 14px;
    text-align: center;
}

/* 主题切换按钮 */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 1000;
}

.theme-toggle:hover {
    background-color: var(--border-color);
    transform: scale(1.1);
}

/* 页面头部样式 */
.page-header {
    margin-bottom: 24px;
}

.page-header h2 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 8px;
}

.page-header p {
    color: var(--text-color);
    opacity: 0.8;
    font-size: 14px;
}

/* 搜索筛选区域 */
.search-filter-section {
    background-color: var(--bg-color);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 4px var(--shadow-color);
}

.search-filter-form {
    display: flex;
    gap: 16px;
    align-items: flex-end;
}

.form-group {
    flex: 1;
    min-width: 150px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
    font-size: 14px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.btn-group {
    display: flex;
    gap: 12px;
}

.btn {
    padding: 8px 16px;
    border-radius: 4px;
    border: 1px solid transparent;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

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

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

.btn-default {
    background-color: var(--bg-color);
    border-color: var(--border-color);
    color: var(--text-color);
}

.btn-default:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

.btn-danger:hover {
    background-color: #ff7875;
}

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

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

/* 表格样式 */
.table-container {
    background-color: var(--bg-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 4px var(--shadow-color);
    overflow: hidden;
}

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

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

.data-table th {
    background-color: rgba(24, 144, 255, 0.1);
    font-weight: 600;
    color: var(--text-color);
    font-size: 14px;
}

.data-table tr:hover {
    background-color: rgba(24, 144, 255, 0.05);
}

.data-table tr:last-child td {
    border-bottom: none;
}

/* 分页控件 */
.pagination {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    padding: 16px;
    background-color: var(--bg-color);
    border-top: 1px solid var(--border-color);
}

.pagination-info {
    margin-right: 16px;
    color: var(--text-color);
    opacity: 0.8;
    font-size: 14px;
}

.pagination-controls {
    display: flex;
    gap: 8px;
}

.pagination-btn {
    height: 32px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    color: var(--text-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.pagination-btn:hover:not(:disabled) {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 模态框样式 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal {
    background-color: var(--bg-color);
    border-radius: 8px;
    box-shadow: 0 4px 12px var(--shadow-color);
    width: 100%;
    max-width: 100%;
    max-height: 100%;
    overflow-y: auto;
    animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-color);
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.modal-close:hover {
    background-color: var(--border-color);
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    padding: 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* 统计卡片样式 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background-color: var(--bg-color);
    border-radius: 8px;
    padding: 20px;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 4px var(--shadow-color);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--shadow-color);
}

.stat-title {
    font-size: 14px;
    color: var(--text-color);
    opacity: 0.8;
    margin-bottom: 8px;
}

.stat-value {
    font-size: 24px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 4px;
}

.stat-desc {
    font-size: 12px;
    color: var(--text-color);
    opacity: 0.6;
}

/* 图表容器样式 */
.charts-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.chart-card {
    background-color: var(--bg-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 4px var(--shadow-color);
    overflow: hidden;
}

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

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

.chart-actions {
    display: flex;
    gap: 8px;
}

.chart-action-btn {
    padding: 4px 12px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    color: var(--text-color);
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.chart-action-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.chart-action-btn.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.chart-content {
    height: 300px;
    padding: 20px;
}

/* 用户信息卡片 */
.user-profile-card {
    background-color: var(--bg-color);
    border-radius: 8px;
    padding: 24px;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 4px var(--shadow-color);
    text-align: center;
    margin-bottom: 24px;
}

.avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    font-weight: 600;
    margin: 0 auto 16px;
}

.user-name {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 12px;
}

.user-info-item {
    font-size: 14px;
    color: var(--text-color);
    opacity: 0.8;
    margin-bottom: 4px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .sidebar {
        width: 60px;
    }
    
    .sidebar-header,
    .nav-item-text {
        display: none;
    }
    
    .nav-item {
        padding: 12px;
        justify-content: center;
    }
    
    .nav-item-icon {
        margin-right: 0;
    }
    
    .search-filter-form {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn-group {
        justify-content: flex-end;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .data-table {
        font-size: 12px;
    }
    
    .data-table th,
    .data-table td {
        padding: 8px 12px;
    }
}

@media (max-width: 480px) {
    .login-container {
        padding: 15px;
    }
    
    .login-form-wrapper {
        padding: 20px;
    }
    
    .main-content {
        padding: 16px;
    }
    
    .modal {
        width: 95%;
        margin: 10px;
    }
}