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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: #f0f2f5;
    color: #333;
}

/* 登录页面 */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-card {
    background: #fff;
    border-radius: 12px;
    padding: 40px;
    width: 400px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    text-align: center;
}

.login-card h1 {
    font-size: 28px;
    margin-bottom: 8px;
    color: #1a1a2e;
}

.login-card p {
    color: #888;
    margin-bottom: 30px;
}

/* 主布局 */
.main-app {
    display: flex;
    min-height: 100vh;
}

/* 侧边栏 */
.sidebar {
    width: 220px;
    background: #1a1a2e;
    color: #fff;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header h2 {
    font-size: 20px;
    font-weight: 600;
}

.sidebar-menu {
    list-style: none;
    flex: 1;
    padding: 10px 0;
}

.sidebar-menu li {
    padding: 12px 20px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.7);
}

.sidebar-menu li:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.sidebar-menu li.active {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    border-left: 3px solid #667eea;
}

.sidebar-menu .icon {
    font-size: 16px;
    width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: 15px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* 内容区 */
.content {
    margin-left: 220px;
    flex: 1;
    padding: 30px;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.page-header h2 {
    margin: 0;
}

h2 {
    font-size: 22px;
    margin-bottom: 20px;
    color: #1a1a2e;
}

/* 统计卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
}

.stat-card {
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.stat-card.wide {
    grid-column: span 3;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 13px;
    color: #888;
}

/* 表格 */
.data-table {
    width: 100%;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    border-collapse: collapse;
}

.data-table th {
    background: #f8f9fa;
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 13px;
    color: #666;
    border-bottom: 2px solid #eee;
}

.data-table td {
    padding: 10px 16px;
    border-bottom: 1px solid #f0f0f0;
    font-size: 14px;
}

.data-table tr:hover td {
    background: #f8f9fa;
}

.data-table .status-enabled {
    color: #52c41a;
    font-weight: 600;
}

.data-table .status-disabled {
    color: #ff4d4f;
    font-weight: 600;
}

/* 按钮 */
.btn {
    padding: 8px 16px;
    border: 1px solid #d9d9d9;
    border-radius: 6px;
    background: #fff;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s;
}

.btn:hover {
    border-color: #667eea;
    color: #667eea;
}

.btn-primary {
    background: #667eea;
    color: #fff;
    border-color: #667eea;
}

.btn-primary:hover {
    background: #5a6fd6;
    color: #fff;
}

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

.btn-danger:hover {
    background: #e04346;
    color: #fff;
}

.btn-sm {
    padding: 4px 12px;
    font-size: 13px;
}

.btn-block {
    width: 100%;
    padding: 12px;
    font-size: 16px;
}

/* 表单 */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    font-size: 14px;
    color: #333;
}

.form-group small {
    display: block;
    margin-top: 4px;
    color: #999;
    font-size: 12px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #d9d9d9;
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.2);
}

.input-sm {
    padding: 6px 10px;
    border: 1px solid #d9d9d9;
    border-radius: 6px;
    font-size: 13px;
}

.input-sm:focus {
    outline: none;
    border-color: #667eea;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

/* 对话框 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: #fff;
    border-radius: 12px;
    width: 520px;
    max-width: 90vw;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    border-bottom: 1px solid #f0f0f0;
}

.modal-header h3 {
    margin: 0;
    font-size: 18px;
}

.modal-close {
    font-size: 24px;
    cursor: pointer;
    color: #999;
    line-height: 1;
}

.modal-close:hover {
    color: #333;
}

.modal-content form {
    padding: 24px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 20px;
}

/* 面包屑 */
.breadcrumb {
    background: #fff;
    padding: 10px 16px;
    border-radius: 6px;
    margin-bottom: 12px;
    font-size: 14px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

.breadcrumb span {
    cursor: pointer;
    color: #667eea;
}

.breadcrumb span:hover {
    text-decoration: underline;
}

/* 过滤栏 */
.filter-bar {
    display: flex;
    gap: 10px;
    align-items: center;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
}

.pagination button {
    padding: 6px 14px;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    background: #fff;
    cursor: pointer;
    font-size: 13px;
}

.pagination button.active {
    background: #667eea;
    color: #fff;
    border-color: #667eea;
}

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

/* 文件操作 */
.file-actions {
    display: flex;
    gap: 10px;
}

/* 设置 */
.settings-section {
    background: #fff;
    border-radius: 8px;
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.settings-section h3 {
    margin-bottom: 16px;
    font-size: 16px;
    color: #1a1a2e;
    border-bottom: 1px solid #eee;
    padding-bottom: 8px;
}

/* Toast提示 */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 12px 24px;
    border-radius: 8px;
    color: #fff;
    font-size: 14px;
    z-index: 2000;
    display: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.toast.success {
    background: #52c41a;
    display: block;
}

.toast.error {
    background: #ff4d4f;
    display: block;
}

/* 操作按钮组 */
.action-btns {
    display: flex;
    gap: 4px;
}

.action-btns .btn {
    padding: 4px 8px;
    font-size: 12px;
}

/* 文件图标 */
.file-icon {
    margin-right: 6px;
}

.dir-link {
    color: #667eea;
    cursor: pointer;
}

.dir-link:hover {
    text-decoration: underline;
}