/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 
                 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: #333;
    background: #f5f7fa;
}

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

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: white;
    border-radius: 8px;
    padding: 40px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}

.login-box h1 {
    font-size: 28px;
    margin-bottom: 10px;
    text-align: center;
    color: #667eea;
}

.login-box .subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 30px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #555;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="url"],
.form-group input[type="number"],
.form-group input[type="file"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.3s;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: #667eea;
}

.form-group input[readonly] {
    background-color: #f5f5f5;
    cursor: not-allowed;
}

.form-group small {
    display: block;
    margin-top: 5px;
    font-size: 12px;
}

.form-group input[type="checkbox"] {
    width: auto;
    margin-right: 8px;
    cursor: pointer;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    margin-right: 8px;
    cursor: pointer;
}

.error-message {
    padding: 10px;
    background: #fee;
    border: 1px solid #fcc;
    border-radius: 4px;
    color: #c33;
    margin-bottom: 15px;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

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

.btn-primary:hover {
    background: #5568d3;
}

.btn-secondary {
    background: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background: #7f8c8d;
}

.btn-danger {
    background: #e74c3c;
    color: white;
}

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

.btn-success {
    background: #27ae60;
    color: white;
}

.btn-success:hover {
    background: #229954;
}

.btn-info {
    background: #3498db;
    color: white;
}

.btn-info:hover {
    background: #2980b9;
}

.btn-block {
    width: 100%;
}

.btn-small {
    padding: 6px 12px;
    font-size: 12px;
}

.login-footer {
    margin-top: 30px;
    text-align: center;
    font-size: 13px;
    color: #666;
}

.login-footer .warning {
    color: #e67e22;
    font-weight: 500;
    margin-top: 10px;
}

/* 仪表板布局 */
.dashboard {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 250px;
    background: #2c3e50;
    color: white;
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 30px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-header h2 {
    font-size: 20px;
    margin-bottom: 10px;
}

.admin-name {
    font-size: 13px;
    color: #bdc3c7;
}

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

.nav-item {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    color: #ecf0f1;
    text-decoration: none;
    transition: background 0.3s;
}

.nav-item:hover {
    background: rgba(255,255,255,0.1);
}

.nav-item.active {
    background: #667eea;
}

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

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

.main-content {
    flex: 1;
    padding: 40px;
    overflow-y: auto;
}

.tab-content {
    display: none;
}

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

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

.tab-header h1 {
    font-size: 32px;
    color: #2c3e50;
}

/* 统计卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.stat-card {
    background: white;
    border-radius: 8px;
    padding: 30px;
    display: flex;
    align-items: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.stat-icon {
    font-size: 48px;
    margin-right: 20px;
}

.stat-info {
    flex: 1;
}

.stat-value {
    font-size: 36px;
    font-weight: bold;
    color: #667eea;
}

.stat-label {
    font-size: 14px;
    color: #7f8c8d;
    margin-top: 5px;
}

/* 信息框 */
.info-box {
    background: white;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.info-box h3 {
    margin-bottom: 15px;
    color: #2c3e50;
}

.info-box ul {
    list-style: none;
}

.info-box ul li {
    padding: 8px 0;
    border-bottom: 1px solid #ecf0f1;
}

.info-box ul li:last-child {
    border-bottom: none;
}

/* 表格 */
.table-container {
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    overflow-x: auto;
}

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

table th {
    background: #f8f9fa;
    padding: 15px;
    text-align: left;
    font-weight: 600;
    color: #2c3e50;
    border-bottom: 2px solid #dee2e6;
}

table td {
    padding: 15px;
    border-bottom: 1px solid #ecf0f1;
}

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

table tr:hover {
    background: #f8f9fa;
}

/* 节点排序数字样式 - 类似badge */
.order-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
    min-width: 40px;
    text-align: center;
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.badge-primary {
    background: #cfe2ff;
    color: #084298;
}

.badge-secondary {
    background: #e2e3e5;
    color: #41464b;
}

.badge-success {
    background: #d4edda;
    color: #155724;
}

.badge-danger {
    background: #f8d7da;
    color: #721c24;
}

.badge-info {
    background: #d1ecf1;
    color: #0c5460;
}

.action-buttons {
    display: flex;
    gap: 8px;
}

.url-display {
    font-family: 'Courier New', monospace;
    font-size: 12px;
    background: #f5f5f5;
    padding: 4px 8px;
    border-radius: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.copy-btn {
    background: #3498db;
    color: white;
    border: none;
    padding: 4px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    flex-shrink: 0;
}

.copy-btn:hover {
    background: #2980b9;
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    overflow-y: auto;
    padding: 20px 0;
}

.modal-content {
    background: white;
    margin: 0 auto;
    width: 90%;
    max-width: 500px;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
    max-height: calc(100vh - 40px);
    display: flex;
    flex-direction: column;
}

.modal-large {
    max-width: 700px;
}

.modal-header {
    padding: 20px 30px;
    border-bottom: 1px solid #ecf0f1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.modal-header h2 {
    margin: 0;
    font-size: 20px;
    color: #2c3e50;
}

.modal-body {
    padding: 30px;
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    padding: 20px 30px;
    border-top: 1px solid #ecf0f1;
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    flex-shrink: 0;
}

.close {
    color: #aaa;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
}

.close:hover {
    color: #000;
}

/* 节点选择 */
.node-selection {
    max-height: 400px;
    overflow-y: auto;
}

.node-item {
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    cursor: pointer;
    transition: background 0.3s;
}

.node-item:hover {
    background: #f8f9fa;
}

.node-item input[type="checkbox"] {
    margin-right: 12px;
    cursor: pointer;
}

.node-item-info {
    flex: 1;
}

.node-item-name {
    font-weight: 500;
    color: #2c3e50;
}

.node-item-meta {
    font-size: 12px;
    color: #7f8c8d;
    margin-top: 4px;
}

/* 设置页面 */
.settings-container {
    max-width: 800px;
}

.settings-section {
    background: white;
    border-radius: 8px;
    padding: 30px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.settings-section h2 {
    margin-bottom: 20px;
    color: #2c3e50;
    font-size: 18px;
}

.settings-form {
    max-width: 500px;
}

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

.settings-form .btn {
    margin-top: 10px;
}

.info-item {
    padding: 15px 0;
    border-bottom: 1px solid #ecf0f1;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.info-item:last-child {
    border-bottom: none;
}

.info-label {
    font-weight: 500;
    color: #555;
}

.info-value {
    color: #2c3e50;
    font-weight: 600;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .dashboard {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .main-content {
        padding: 20px;
    }
    
    .settings-container {
        max-width: 100%;
    }
    
    .info-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
}