/* 全局样式 */
/* 全局样式 - CSS变量定义 */



:root {
    /* 主色调 */
    --primary-color: #667EEA;
    --primary-light: #8F9BE9;
    --primary-dark: #5064CE;
    --primary-gradient: linear-gradient(135deg, #667EEA 0%, #764BA2 100%);
    
    /* 中性色 */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --bg-tertiary: #F1F3F5;
    
    /* 文本颜色 */
    --text-primary: #2C3E50;
    --text-secondary: #6C757D;
    --text-tertiary: #ADB5BD;
    
    /* 边框和阴影 */
    --border-color: #DEE2E6;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.08);
    
    /* 功能色 - 简化版 */
    --success-color: #2ECC71;
    --warning-color: #F39C12;
    --danger-color: #E74C3C;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
}

/* 头部导航 */
header {
    background: var(--primary-gradient);
    color: white;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

/* 用户管理页面特定样式 */
.country-stats {
    margin-bottom: 20px;
}

.country-stats h5 {
    margin-bottom: 15px;
    color: var(--text-primary);
    font-weight: 600;
}

.country-stats .badge {
    display: inline-block;
    padding: 8px 12px;
    border-radius: 20px;
    font-size: 14px;
    margin: 4px;
    background-color: var(--primary-color);
    color: white;
    cursor: pointer;
    transition: all 0.2s ease;
}

.country-stats .badge:hover {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
}

/* 搜索框美化样式 */
.filter-form {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filter-form .row {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 15px;
}

.filter-form .col-md-4,
.filter-form .col-md-3,
.filter-form .col-md-2 {
    display: flex;
    align-items: center;
    margin: 0;
    padding: 0;
}

/* 搜索框样式 */
.filter-form input[type="text"],
.filter-form input[type="search"] {
    padding: 8px 16px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    transition: all 0.3s ease;
    background-color: white;
    width: 100%;
    box-shadow: var(--shadow-sm);
    height: 40px;
    line-height: 24px;
}

.filter-form input[type="text"]:focus,
.filter-form input[type="search"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    transform: translateY(-1px);
}

/* 搜索按钮样式 */
.filter-form .btn {
    margin-right: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 500;
    font-size: 14px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
    border: none;
}

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

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

.filter-form .btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.filter-form .btn-secondary:hover {
    background-color: var(--border-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .filter-form .row {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-form .col-md-4,
    .filter-form .col-md-3,
    .filter-form .col-md-2 {
        width: 100%;
        margin-bottom: 10px;
    }
    
    .filter-form .btn {
        width: 100%;
        margin-right: 0;
        margin-bottom: 8px;
    }
}

.table-responsive {
    margin-top: 20px;
}

.table {
    width: 100%;
    border-collapse: collapse;
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    table-layout: fixed;
}

.table th,
.table td {
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.table th {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    font-weight: 600;
    border-bottom: 2px solid var(--border-color);
}

.table tbody tr:hover {
    background-color: var(--bg-tertiary);
}

/* 固定列宽，确保表格布局稳定 - 6列布局 
.table th:nth-child(1),
.table td:nth-child(1) {
    width: 10%;
    text-align: center;
}

.table th:nth-child(2),
.table td:nth-child(2) {
    width: 16%;
}

.table th:nth-child(3),
.table td:nth-child(3) {
    width: 12%;
    text-align: center;
}

.table th:nth-child(4),
.table td:nth-child(4) {
    width: 15%;
}

.table th:nth-child(5),
.table td:nth-child(5) {
    width: auto;
}

.table th:nth-child(6),
.table td:nth-child(6) {
    width: 100px;
    text-align: center;
}
*/
.table-actions {
    display: flex;
    gap: 8px;
    justify-content: center;
}

.table-actions .btn {
    padding: 6px 12px;
    font-size: 13px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.table-actions .btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

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

.table-actions .btn-warning {
    background-color: var(--warning-color);
    border-color: var(--warning-color);
}

.table-actions .btn-warning:hover {
    background-color: #e67e22;
}

.table-actions .btn-danger {
    background-color: var(--danger-color);
    border-color: var(--danger-color);
}

.table-actions .btn-danger:hover {
    background-color: #c0392b;
}

.pagination-container {
    margin-top: 20px;
    text-align: center;
}

.pagination {
    display: inline-flex;
    padding-left: 0;
    list-style: none;
    border-radius: 4px;
}

.pagination .page-item {
    margin: 0 2px;
}

.pagination .page-link {
    position: relative;
    display: block;
    padding: 8px 16px;
    margin-left: -1px;
    line-height: 1.25;
    color: var(--primary-color);
    background-color: white;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.pagination .page-link:hover {
    color: var(--primary-dark);
    background-color: var(--bg-tertiary);
    border-color: var(--primary-light);
}

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

.pagination .page-item.disabled .page-link {
    color: var(--text-tertiary);
    pointer-events: none;
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}


.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 600;
    
}

.logo-icon {
    font-size: 2rem;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 20px;
}

nav a {
    color: white;
    text-decoration: none;
    padding: 8px 15px;
    border-radius: 4px;
    transition: background 0.3s;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
}

nav a:hover, nav a.active {
    background: rgba(255, 255, 255, 0.1);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-info span {
    font-size: 0.9rem;
}

.logout-btn {
    background: var(--danger-color);
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s;
}

.logout-btn:hover {
    background: #c0392b;
}

/* 主内容区 */
.container {
    display: flex;
    min-height: calc(100vh - 70px);
    background-color: var(--bg-secondary);
}

.sidebar {
    width: 250px;
    background: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    padding: 20px 0;
    box-shadow: var(--shadow-sm);
}

.sidebar-menu {
    list-style: none;
}

.sidebar-menu li {
    margin-bottom: 5px;
}

.sidebar-menu a {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s;
    gap: 10px;
    font-weight: 500;
}

.sidebar-menu a:hover, .sidebar-menu a.active {
    background: rgba(102, 126, 234, 0.08);
    color: var(--primary-color);
    border-left: 4px solid var(--primary-color);
}

.sidebar-menu i {
    font-size: 1.2rem;
}

.main-content {
    flex: 1;
    padding: 25px;
    overflow-y: auto;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.page-header h2 {
    font-size: 1.8rem;
    color: var(--text-primary);
    font-weight: 600;
}

.btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: background 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

/* 统计卡片 */
.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--bg-primary);
    border-radius: 8px;
    padding: 20px;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s, box-shadow 0.3s;
    border-top: 4px solid var(--primary-color);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stat-card.offline {
    border-top-color: var(--danger-color);
}

.stat-card.warning {
    border-top-color: var(--warning-color);
}

.stat-card.success {
    border-top-color: var(--success-color);
}

.stat-title {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.stat-info {
    display: flex;
    align-items: center;
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

/* 卡片样式 */
.card {
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    margin-bottom: 30px;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-header {
    padding: 25px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.card-header h3,
.card-header h4 {
    font-size: 1.4rem;
    color: var(--text-primary);
    font-weight: 600;
    margin: 0;
}

.card-body {
    padding: 30px;
    overflow-x: auto;
}

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

th {
    background: var(--bg-secondary) !important;
    padding: 15px 20px;
    text-align: left;
    color: var(--text-secondary);
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
}

td {
    padding: 12px 20px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

tr:hover td {
    background: rgba(102, 126, 234, 0.05);
}

.status {
    display: inline-flex;
    align-items: center;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.status.online {
    background: rgba(46, 204, 113, 0.1);
    color: var(--success-color);
}

.status.offline {
    background: rgba(231, 76, 60, 0.1);
    color: var(--danger-color);
}

.status.warning {
    background: rgba(243, 156, 18, 0.1);
    color: var(--warning-color);
}

.action-btn {
    padding: 6px 12px;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s;
    font-size: 0.9rem;
}

.action-btn:hover {
    background: rgba(102, 126, 234, 0.2);
}

/* 登录页面 */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: var(--primary-gradient);
}

.login-box {
    width: 400px;
    background: var(--bg-primary);
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.login-header {
    background: var(--primary-color);
    color: white;
    text-align: center;
    padding: 25px;
}

.login-header h2 {
    font-size: 1.8rem;
}

.login-body {
    padding: 30px;
}

.form-group {
    margin-bottom: 20px;
}

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

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    transition: border 0.3s;
    background-color: var(--bg-primary);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.login-btn {
    width: 100%;
    padding: 12px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 1.1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.3s;
}

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

/* 必填字段样式 */
.text-danger {
    color: var(--danger-color);
    font-weight: 600;
}

.error-message {
    color: var(--danger-color);
    margin-top: 15px;
    text-align: center;
    font-size: 0.95rem;
}

/* 表单提交按钮区域 */
.form-actions {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 15px;
    align-items: center;
}

/* 提交按钮动画效果 */
.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(102, 126, 234, 0.2);
}

/* 卡片和表单在移动端的优化 */
@media (max-width: 768px) {
    .main-content {
        padding: 15px;
    }
    
    .card {
        border-radius: 8px;
    }
    
    .card-header {
        padding: 15px 20px;
    }
    
    .card-header h3,
    .card-header h4 {
        font-size: 1.2rem;
    }
    
    .card-body {
        padding: 20px;
    }
    
    .form-control {
        padding: 10px 12px;
        font-size: 0.95rem;
    }
    
    .form-check {
        min-height: 2.5rem;
    }
    
    .btn-primary,
    .btn-secondary {
        padding: 10px 20px;
        font-size: 0.95rem;
        width: 100%;
        justify-content: center;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .mr-3 {
        margin-right: 0;
        margin-bottom: 10px;
    }
}

/* 数据库连接状态 */
.db-status {
    position: fixed;
    bottom: 10px;
    right: 10px;
    padding: 8px 15px;
    background: rgba(46, 204, 113, 0.9);
    color: white;
    border-radius: 20px;
    font-size: 0.85rem;
    z-index: 1000;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .sidebar {
        width: 200px;
    }
}

@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .sidebar-menu {
        display: flex;
        overflow-x: auto;
        padding-bottom: 10px;
    }
    
    .sidebar-menu li {
        margin-bottom: 0;
        margin-right: 10px;
    }
    
    .sidebar-menu a {
        white-space: nowrap;
    }
    
    nav ul {
        display: none;
    }
}
/* 分页样式 - 修复显示问题 */
.pagination {
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    list-style: none !important;
    padding: 15px 0 !important;
    margin-top: 20px !important;
    width: 100% !important;
}

.pagination .page-item {
    margin: 0 3px !important;
    display: flex !important;
}

.pagination .page-link {
    color: var(--primary-color) !important;
    background-color: var(--bg-primary) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: 4px !important;
    padding: 8px 12px !important;
    text-decoration: none !important;
    font-size: 14px !important;
    transition: all 0.3s ease !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    min-width: 36px !important;
    height: 36px !important;
    line-height: 1 !important;
    opacity: 1 !important;
    visibility: visible !important;
}

.pagination .page-link:hover:not(.active):not(.disabled) {
    background-color: rgba(102, 126, 234, 0.1) !important;
    border-color: var(--primary-color) !important;
    transform: translateY(-1px) !important;
    box-shadow: 0 2px 4px rgba(102, 126, 234, 0.15) !important;
}

.pagination .page-item.active .page-link {
    background: var(--primary-gradient) !important;
    color: white !important;
    border-color: var(--primary-color) !important;
    font-weight: 600 !important;
}

.pagination .page-item.disabled .page-link {
    background-color: var(--bg-tertiary) !important;
    color: var(--text-tertiary) !important;
    cursor: not-allowed !important;
    opacity: 0.6 !important;
}
    cursor: not-allowed;
    opacity: 0.6;
}

/* 表单样式 */
.form-control {
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 12px 15px;
    width: 100%;
    transition: all 0.3s ease;
    background-color: var(--bg-primary);
    font-size: 1rem;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    outline: none;
    transform: translateY(-1px);
}

.form-select {
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 10px 12px;
    width: 100%;
    transition: all 0.3s;
    background-color: var(--bg-primary);
}

.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.1);
    outline: none;
}

/* Bootstrap 表单行样式 */
.form-row {
    display: flex;
    flex-wrap: wrap;
    margin-right: -5px;
    margin-left: -5px;
}

.form-row > .col,
.form-row > [class*="col-"] {
    padding-right: 5px;
    padding-left: 5px;
}

/* 表单组样式增强 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* 表单复选框样式 */
.form-check {
    display: block;
    min-height: 3rem;
    padding-left: 2em;
    margin-bottom: 1rem;
    position: relative;
}

.form-check-input {
    width: 1.25em;
    height: 1.25em;
    margin-top: 0.25em;
    margin-left: -2em;
    vertical-align: top;
    background-color: var(--bg-primary);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='white'%3e%3cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z' clip-rule='evenodd'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: center;
    background-size: 60%;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    transition: all 0.3s ease;
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.form-check-input:focus {
    border-color: var(--primary-color);
    outline: 0;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

.form-check-label {
    margin-bottom: 0;
    cursor: pointer;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 1rem;
    line-height: 1.5;
}

/* 输入组 */
.input-group {
    display: flex;
    align-items: stretch;
    width: 100%;
}

.input-group-text {
    display: flex;
    align-items: center;
    padding: 0.375rem 0.75rem;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: var(--text-secondary);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-right: none;
    border-radius: 4px 0 0 4px;
}

.input-group > .form-control {
    border-radius: 0 4px 4px 0;
}

/* 徽章样式 */
.badge {
    display: inline-block;
    padding: 0.35em 0.65em;
    font-size: 0.75em;
    font-weight: 500;
    line-height: 1;
    color: #fff;
    background-color: var(--primary-color);
    text-align: center;
    white-space: nowrap;
    vertical-align: baseline;
    border-radius: 0.375rem;
    transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out;
}

.badge.bg-primary { background-color: var(--primary-color); }
.badge.bg-success { background-color: var(--success-color); }
.badge.bg-warning { background-color: var(--warning-color); }
.badge.bg-danger { background-color: var(--danger-color); }

/* 表格响应式 */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* 按钮变体 */
.btn-primary { 
    background: var(--primary-gradient); 
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
    .table-dark{
       --bs-table-color:  var(--bs-heading-color)
    }

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
    background: var(--text-secondary);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-secondary:hover {
    background: #5a6268;
    transform: translateY(-1px);
}

.btn-success { background: var(--success-color); color: white; }
.btn-warning { background: var(--warning-color); color: white; }
.btn-danger { background: var(--danger-color); color: white; }
.btn-info { background: var(--primary-light); color: white; }

/* 按钮间距 */
.mr-3 {
    margin-right: 1rem;
}

/* 表格操作按钮布局 */
.table-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

/* 页脚样式 */
.db-status {
    text-align: center;
    padding: 15px;
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
}
    .page-info {
        text-align: center;
        margin-bottom: 15px;
        color: var(--text-secondary);
    }
    .container {
        background-color: var(--bg-primary);
        padding: 25px;
        border-radius: 10px;
        box-shadow: var(--shadow-md);
        max-width: 100%;
    }

    .search-result {
            padding: 20px;
        }
        
        .device-detail {
            background: var(--bg-tertiary);
            border-radius: 8px;
            padding: 20px;
            margin-bottom: 20px;
        }
        
        .device-detail h3 {
            color: var(--primary-color);
            margin-bottom: 15px;
            border-bottom: 2px solid var(--primary-color);
            padding-bottom: 10px;
        }
        
        .device-info {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 15px;
        }
        
        .info-item {
            display: flex;
            flex-direction: column;
        }
        
        .info-label {
            font-weight: bold;
            color: var(--text-secondary);
            margin-bottom: 5px;
            font-size: 14px;
        }
        
        .info-value {
            font-size: 16px;
        }

        
        
        .device-list h3 {
            color: var(--text-primary);
            margin-bottom: 15px;
        }
        
        .device-table {
            width: 100%;
            border-collapse: collapse;
        }
        
        .device-table th {
            background-color: var(--bg-tertiary);
            padding: 12px;
            text-align: left;
            font-weight: 600;
            border-bottom: 2px solid var(--border-color);
        }
        
        .device-table td {
            padding: 12px;
            border-bottom: 1px solid var(--border-color);
        }
        
        .device-table tr:hover {
            background-color: var(--bg-tertiary);
        }

        /* 设备详情卡片样式优化 */
.device-detail {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
}

.device-detail h4 {
    color: var(--text-primary);
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-color);
    font-size: 18px;
}

.device-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
}

.info-item {
    display: flex;
    flex-direction: column;
    padding: 12px;
    background: var(--bg-primary);
    border-radius: 6px;
    border-left: 4px solid var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.info-label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 5px;
}

.info-value {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 500;
}

/* 状态样式优化 */
.status {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status.online {
    background-color: rgba(46, 204, 113, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(46, 204, 113, 0.2);
}

.status.offline {
    background-color: rgba(231, 76, 60, 0.1);
    color: var(--danger-color);
    border: 1px solid rgba(231, 76, 60, 0.2);
}

/* 消息提示样式优化 */
.alert {
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 20px;
    border: 1px solid transparent;
}

.alert-success {
    background-color: rgba(46, 204, 113, 0.1);
    color: var(--success-color);
    border-color: rgba(46, 204, 113, 0.2);
}

.alert-danger {
    background-color: rgba(231, 76, 60, 0.1);
    color: var(--danger-color);
    border-color: rgba(231, 76, 60, 0.2);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .device-info-grid {
        grid-template-columns: 1fr;
    }
    
    .card-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .page-header {
        flex-direction: column;
        gap: 15px;
    }
    
    .filter-buttons {
        justify-content: center;
    }
    
    .info-item {
        border-left-width: 3px;
    }
}

.last-heartbeat {
    font-size: 12px;
    color: var(--text-tertiary);
}

.no-devices {
    text-align: center;
    padding: 40px;
    color: var(--text-tertiary);
    font-style: italic;
}




        
       .c { max-width: 1400px; margin: 0 auto; }
       .c .filters { background: var(--bg-tertiary); padding: 15px; border-radius: 5px; margin-bottom: 20px; }
       .c .filter-group { margin-bottom: 10px; display: flex; align-items: center; gap: 10px; }
       .c .filter-group label { min-width: 80px; color: var(--text-secondary); }
       .c input, select, button { padding: 8px; border: 1px solid var(--border-color); border-radius: 4px; background-color: var(--bg-primary); }
       .c button { background: var(--primary-color); color: white; border: none; cursor: pointer; }
       .c button:hover { background: var(--primary-dark); }
       .c table { width: 100%; border-collapse: collapse; margin-top: 20px; font-size: 14px; box-shadow: var(--shadow-sm); border-radius: 6px; overflow: hidden; }
       .c th, td { border: 1px solid var(--border-color); padding: 12px 15px; text-align: left; color: var(--text-primary); }
       .c th { background: var(--primary-light); position: sticky; top: 0; color: white; font-weight: 600; border-bottom: 2px solid var(--primary-dark); }
       .c .pagination { margin-top: 20px !important; display: flex !important; gap: 3px !important; align-items: center !important; }
       .c .loading { text-align: center; padding: 20px; color: var(--text-secondary); }
       .c .error { color: var(--danger-color); padding: 10px; background: rgba(231, 76, 60, 0.1); border-radius: 4px; border: 1px solid rgba(231, 76, 60, 0.2); }
       .c .status-alarm { color: var(--danger-color); font-weight: bold; }
       .c .status-resolved { color: var(--success-color); font-weight: bold; }
       .c tr { transition: background-color 0.2s ease; }
       .c tr:nth-child(even) { background-color: var(--bg-secondary); }
       .c tr:hover { background-color: rgba(102, 126, 234, 0.1) !important; }
       .c tr:hover td { color: var(--primary-dark); }

       .c .search-box { display: flex; gap: 10px; align-items: center; }
       .c .search-box input { width: 200px; }
       .c .search-info { margin: 10px 0; padding: 10px; background: rgba(102, 126, 234, 0.1); border-radius: 4px; display: none; }
       .c .filter-row { display: flex; flex-wrap: wrap; gap: 15px; align-items: center; margin-bottom: 10px; }
       .c .filter-item { display: flex; align-items: center; gap: 5px; }
       .c .filter-item label { min-width: auto; margin-right: 5px; color: var(--text-secondary); }