/* CSS Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* CSS 变量 */
:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #eef2ff;
    --danger-color: #ef4444;
    --danger-hover: #dc2626;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --radius: 0.5rem;
    --radius-sm: 0.375rem;
    --radius-lg: 0.75rem;
    --transition: all 0.2s ease;
}

/* 基础样式 */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--gray-700);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.hidden {
    display: none !important;
}

/* 初始加载遮罩 */
#initialLoader {
    position: fixed;
    inset: 0;
    background: white;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.3s ease;
}

#initialLoader.fade-out {
    opacity: 0;
}

/* 加载动画 */
.loading-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.spinner-icon {
    width: 48px;
    height: 48px;
    animation: rotate 1s linear infinite;
}

.spinner-circle {
    stroke: var(--primary-color);
    stroke-dasharray: 89, 200;
    stroke-dashoffset: -35;
    stroke-linecap: round;
    animation: dash 1.5s ease-in-out infinite;
}

@keyframes rotate {
    100% { transform: rotate(360deg); }
}

@keyframes dash {
    0% {
        stroke-dasharray: 1, 200;
        stroke-dashoffset: 0;
    }
    50% {
        stroke-dasharray: 89, 200;
        stroke-dashoffset: -35;
    }
    100% {
        stroke-dasharray: 89, 200;
        stroke-dashoffset: -124;
    }
}

/* 通知容器 */
#notificationContainer {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 9000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
}

.notification {
    background: white;
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-width: 250px;
    transform: translateX(400px);
    transition: transform 0.3s ease;
    pointer-events: all;
}

.notification.show {
    transform: translateX(0);
}

.notification::before {
    content: '';
    width: 4px;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    border-radius: var(--radius) 0 0 var(--radius);
}

.notification-success::before {
    background: var(--success-color);
}

.notification-error::before {
    background: var(--danger-color);
}

.notification-warning::before {
    background: var(--warning-color);
}

.notification-info::before {
    background: var(--info-color);
}

/* 登录页面 */
#loginPage {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.login-card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: 3rem 2rem;
    width: 100%;
    max-width: 400px;
}

.login-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.login-subtitle {
    text-align: center;
    color: var(--gray-500);
    margin-bottom: 2rem;
}

/* 表单样式 */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-hint {
    display: block;
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: 0.25rem;
}

.required {
    color: var(--danger-color);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.form-section {
    margin: 2rem 0;
}

.form-section h3,
.form-section h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

/* 按钮样式 */
.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
}

.btn svg {
    width: 16px;
    height: 16px;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: white;
    color: var(--gray-700);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    background: var(--gray-50);
}

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

.btn-danger:hover {
    background: var(--danger-hover);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-icon {
    padding: 0.5rem;
    background: transparent;
    border: 1px solid var(--border-color);
}

.btn-icon:hover {
    background: var(--gray-50);
}

.btn-block {
    width: 100%;
    justify-content: center;
}

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

/* 导航栏 */
.navbar {
    background: white;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
}

.brand-icon {
    width: 28px;
    height: 28px;
    color: var(--primary-color);
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0 1rem;
    border-right: 1px solid var(--border-color);
}

.user-role {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    font-weight: 600;
    text-transform: uppercase;
}

.user-role.admin {
    background: var(--danger-light, #fef2f2);
    color: var(--danger-color);
}

.user-role.manager {
    background: var(--primary-light);
    color: var(--primary-color);
}

.user-role.user {
    background: var(--gray-100);
    color: var(--gray-600);
}

/* 主容器 */
.main-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    background: var(--gray-50);
    min-height: calc(100vh - 73px);
}

/* 统计卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    display: flex;
    gap: 1rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-hover));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.stat-card:hover::before {
    transform: scaleX(1);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    background: var(--primary-light);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon.success {
    background: #dcfce7;
    color: var(--success-color);
}

.stat-icon.warning {
    background: #fef3c7;
    color: var(--warning-color);
}

.stat-icon.info {
    background: #dbeafe;
    color: var(--info-color);
}

.stat-icon svg {
    width: 24px;
    height: 24px;
}

.stat-content {
    flex: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-bottom: 0.5rem;
    letter-spacing: 0.025em;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1;
    background: linear-gradient(135deg, var(--gray-900), var(--gray-700));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: transform 0.2s ease;
}

.stat-card:hover .stat-value {
    transform: scale(1.05);
}

/* 特殊样式：金额显示 */
.stat-content:has(#totalBalance) .stat-value {
    background: linear-gradient(135deg, #10b981, #059669);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-change {
    font-size: 0.8125rem;
    color: var(--gray-500);
    margin-top: 0.5rem;
    font-weight: 500;
}

.stat-change.positive {
    color: var(--success-color);
}

.stat-change.negative {
    color: var(--danger-color);
}

/* 用户管理区域 */
.users-section {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

/* 工具栏 */
.toolbar {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.toolbar-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.toolbar-left h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
}

.toolbar-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.search-box {
    position: relative;
}

.search-icon {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    color: var(--gray-400);
}

.search-box input {
    padding: 0.5rem 0.75rem 0.5rem 2.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    width: 250px;
    font-size: 0.875rem;
    transition: var(--transition);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.filter-select {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    background: white;
    cursor: pointer;
    transition: var(--transition);
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* 徽章 */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.125rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--gray-100);
    color: var(--gray-700);
}

.badge-admin {
    background: var(--danger-light, #fef2f2);
    color: var(--danger-color);
}

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

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

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

.users-table thead {
    background: var(--gray-50);
}

.users-table th {
    padding: 0.75rem 1rem;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-700);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-color);
}

.users-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--gray-100);
}

.users-table tbody tr:hover {
    background: var(--gray-50);
}

.checkbox {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

/* 用户单元格 */
.user-cell {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-avatar-sm {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.user-details {
    flex: 1;
}

.user-name {
    font-weight: 600;
    color: var(--gray-900);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.user-email {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.user-meta {
    font-size: 0.75rem;
    color: var(--gray-400);
}

/* 等级信息 */
.level-info {
    display: flex;
    gap: 0.5rem;
}

.level-badge {
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--gray-100);
    color: var(--gray-700);
}

.level-badge.level-0 {
    background: var(--gray-100);
    color: var(--gray-700);
}

.level-badge.level-1 {
    background: #dbeafe;
    color: #1e40af;
}

.level-badge.level-2 {
    background: #dcfce7;
    color: #166534;
}

.level-badge.level-3 {
    background: #fef3c7;
    color: #92400e;
}

.level-badge.level-4 {
    background: #fce7f3;
    color: #9f1239;
}

.level-badge.level-5,
.level-badge.level-6,
.level-badge.level-7,
.level-badge.level-8,
.level-badge.level-9 {
    background: #e0e7ff;
    color: #3730a3;
}

.role-badge {
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--gray-600);
    background: var(--gray-50);
}

/* 余额单元格 */
.balance-cell {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.balance-value {
    font-weight: 600;
    color: var(--gray-900);
}

.balance-used {
    font-size: 0.75rem;
    color: var(--gray-500);
}

/* 配额单元格 */
.quota-cell {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.quota-item {
    display: flex;
    gap: 0.5rem;
    font-size: 0.75rem;
}

.quota-label {
    color: var(--gray-500);
}

.quota-value {
    color: var(--gray-700);
    font-weight: 500;
}

/* 使用情况单元格 */
.usage-cell {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.usage-item {
    display: flex;
    gap: 0.5rem;
    font-size: 0.75rem;
}

.usage-label {
    color: var(--gray-500);
}

.usage-value {
    color: var(--gray-700);
    font-weight: 500;
}

/* 状态徽章 */
.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-block;
}

.status-active {
    background: #dcfce7;
    color: var(--success-color);
}

.status-disabled {
    background: var(--gray-100);
    color: var(--gray-500);
}

/* 操作按钮 */
.action-buttons {
    display: flex;
    gap: 0.25rem;
}

.action-buttons .btn-icon {
    padding: 0.375rem;
}

.action-buttons .btn-icon svg {
    width: 14px;
    height: 14px;
}

.action-buttons .btn-danger {
    background: transparent;
    color: var(--danger-color);
}

.action-buttons .btn-danger:hover {
    background: var(--danger-light, #fef2f2);
}

/* 批量操作栏 */
.bulk-actions {
    padding: 1rem 1.5rem;
    background: var(--primary-light);
    border-top: 2px solid var(--primary-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.bulk-info {
    font-weight: 500;
    color: var(--gray-700);
}

.bulk-buttons {
    display: flex;
    gap: 0.5rem;
}

/* 分页 */
.pagination {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: center;
    gap: 0.25rem;
}

.pagination button {
    padding: 0.375rem 0.75rem;
    border: 1px solid var(--border-color);
    background: white;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
}

.pagination button:hover {
    background: var(--gray-50);
}

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

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

/* 无数据状态 */
.no-data {
    text-align: center;
    padding: 3rem;
    color: var(--gray-500);
}

.loading-row td {
    padding: 2rem;
}

.table-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.table-loading p {
    color: var(--gray-500);
}

/* 模态框 */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: white;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow: auto;
    box-shadow: var(--shadow-xl);
}

.modal-content.modal-large {
    max-width: 900px;
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
}

.modal-close {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--gray-400);
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--gray-100);
    color: var(--gray-700);
}

.modal-body {
    padding: 1.5rem;
}

/* 用户头部信息 */
.user-header {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--gray-50);
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
}

.user-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.user-info h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.25rem;
}

.user-info p {
    color: var(--gray-600);
    margin-bottom: 0.5rem;
}

.user-meta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.meta-item {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.meta-item strong {
    color: var(--gray-700);
}

/* 标签页 */
.tabs {
    display: flex;
    gap: 0.25rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--gray-600);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.tab-btn:hover {
    color: var(--gray-900);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* 余额信息 */
.credit-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.credit-card {
    padding: 1rem;
    background: var(--gray-50);
    border-radius: var(--radius);
    text-align: center;
}

.credit-label {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-bottom: 0.5rem;
}

.credit-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
}

.credit-history {
    margin-top: 2rem;
}

.history-list {
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1rem;
}

/* 资源权限复选框 */
.resource-checkboxes {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0.75rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
}

.checkbox-label span {
    font-size: 0.875rem;
    color: var(--gray-700);
}

/* 账户信息 */
.account-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--gray-50);
    border-radius: var(--radius-sm);
}

.info-label {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.info-value {
    font-weight: 500;
    color: var(--gray-900);
}

.key-display {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.key-display span {
    font-family: monospace;
    background: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

/* 危险区域 */
.danger-zone {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--danger-color);
}

.danger-zone h3 {
    color: var(--danger-color);
    font-size: 1rem;
    margin-bottom: 1rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .stat-value {
        font-size: 1.5rem;
    }

    .stat-card {
        padding: 1rem;
    }

    .stat-icon {
        width: 40px;
        height: 40px;
    }

    .stat-icon svg {
        width: 20px;
        height: 20px;
    }
    .navbar-container {
        padding: 1rem;
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }

    .navbar-actions {
        justify-content: space-between;
    }

    .user-info {
        border-right: none;
        padding: 0;
    }

    .main-container {
        padding: 1rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .toolbar-left,
    .toolbar-right {
        width: 100%;
    }

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

    .table-container {
        overflow-x: auto;
    }

    .users-table {
        min-width: 800px;
    }

    .bulk-actions {
        flex-direction: column;
        gap: 1rem;
    }

    .modal-content {
        max-width: calc(100vw - 2rem);
    }

    .user-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .tabs {
        overflow-x: auto;
    }
}