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

body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: #f0f2f5;
    min-height: 100vh;
}

/* 应用布局 */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    width: 100%;
}

.header {
    background-color: #fff;
    padding: 1rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    width: 100%;
}

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

.user-info .material-icons {
    font-size: 24px;
    color: #666;
}

.username {
    font-weight: 500;
    color: #333;
}

.department {
    color: #666;
}

.logout-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #666;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.logout-btn:hover {
    background-color: #f0f2f5;
}

.logout-btn .material-icons {
    font-size: 20px;
}

.main-container {
    display: flex;
    flex: 1;
    min-height: 0;
    width: 100%;
}

.side-menu {
    width: 250px;
    background-color: #fff;
    border-right: 1px solid #e0e0e0;
    overflow-y: auto;
    flex-shrink: 0;
    height: calc(100vh - 64px);
}

.main-content {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
    background-color: #f0f2f5;
    height: calc(100vh - 64px);
}

/* 欢迎面板 */
.welcome-panel {
    background-color: #fff;
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin: 2rem auto;
    max-width: 800px;
}

.welcome-panel h1 {
    color: #333;
    font-size: 2rem;
    margin-bottom: 1rem;
}

.welcome-panel p {
    color: #666;
    font-size: 1.1rem;
    line-height: 1.5;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
}

.btn i {
    margin-right: 6px;
}

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

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

.btn-secondary {
    background-color: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background-color: #5a6268;
}

.btn-danger {
    background-color: #dc3545;
    color: white;
}

.btn-danger:hover {
    background-color: #c82333;
}

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

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 9999;
    overflow: visible;
}

.modal.show {
    display: block;
}

.modal-content {
    position: relative;
    background-color: #fff;
    margin: 15vh auto;
    padding: 20px;
    width: 90%;
    max-width: 500px;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    animation: modalFadeIn 0.3s ease-out;
    z-index: 10000;
}

.modal-body {
    position: relative;
    z-index: 10001;
}

.form-group {
    position: relative;
    z-index: 10002;
}

.form-group input {
    position: relative;
    z-index: 10003;
}

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

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

.modal-header h3 {
    margin: 0;
    color: #333;
}

.modal-body {
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #666;
}

.form-group input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    background: white;
}

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

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.close {
    background: none;
    border: none;
    font-size: 24px;
    color: #999;
    cursor: pointer;
    padding: 0;
}

.close:hover {
    color: #666;
}

/* 管理面板样式 */
.admin-panel {
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
}

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

.panel-header h2 {
    margin: 0;
    font-size: 18px;
    color: var(--text-primary);
    font-weight: 500;
}

.action-bar {
    display: flex;
    gap: 10px;
}

/* 全局变量 */
:root {
    /* 主色调 */
    --primary-color: #4a90e2;
    --primary-light: #6ba4e7;
    --primary-dark: #357abd;
    --secondary-color: #f5f7fa;
    --success-color: #2ecc71;
    --danger-color: #e74c3c;
    
    /* 文字颜色 */
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --text-light: #95a5a6;
    
    /* 边框和背景 */
    --border-color: #e0e6ed;
    --bg-light: #f8f9fa;
    --bg-dark: #2c3e50;
    
    /* 阴影 */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #4a90e2 0%, #357abd 100%);
    --gradient-success: linear-gradient(135deg, #2ecc71 0%, #27ae60 100%);
    --gradient-danger: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    
    /* 圆角 */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    
    /* 动画时间 */
    --transition-fast: 0.2s;
    --transition-normal: 0.3s;
    --transition-slow: 0.5s;
}

/* 布局样式 */
.layout {
    display: flex;
    min-height: 100vh;
}

.side-menu {
    width: 250px;
    background: #fff;
    border-right: 1px solid #eee;
    box-shadow: 2px 0 5px rgba(0,0,0,0.1);
    z-index: 100;
}

.menu-group-header {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.menu-group-header:hover {
    background-color: #f5f5f5;
}

.menu-title {
    margin-left: 10px;
    flex: 1;
}

.submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.submenu-item {
    display: flex;
    align-items: center;
    padding: 10px 15px 10px 40px;
    text-decoration: none;
    color: #333;
    transition: background-color 0.3s;
}

.submenu-item:hover {
    background-color: #f5f5f5;
}

.menu-icon {
    font-size: 16px;
    width: 20px;
    text-align: center;
    margin-right: 8px;
    color: #666;
}

.menu-text {
    flex: 1;
}

/* 顶部栏样式 */
.header {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    padding: 10px 20px;
    background-color: #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 1000;
}

.user-info {
    display: flex;
    align-items: center;
    margin-right: 20px;
}

.user-info .material-icons {
    margin-right: 5px;
}

.username {
    font-weight: 500;
    margin-right: 5px;
}

.department {
    color: #666;
}

.logout-btn {
    display: flex;
    align-items: center;
    padding: 6px 12px;
    color: #666;
    text-decoration: none;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.logout-btn:hover {
    background-color: #f0f0f0;
}

.logout-btn .material-icons {
    margin-right: 5px;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: #f5f5f5;
}

.header {
    background: #fff;
    padding: 15px 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#mainContentArea {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
}

.welcome-image {
    text-align: center;
    margin-top: 20px;
}

.welcome-image img {
    max-width: 100%;
    height: auto;
}

/* 登录页样式 */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    text-align: center;
    max-width: 400px;
    width: 100%;
}

.login-box h1 {
    color: #333;
    margin-bottom: 30px;
}

.login-tip {
    font-size: 18px;
    color: #666;
    margin-bottom: 30px;
}

.qr-tip {
    text-align: left;
    margin-top: 30px;
    padding: 20px;
    background: #f8f8f8;
    border-radius: 4px;
}

.qr-tip ol {
    margin: 10px 0 0 20px;
    padding: 0;
}

.qr-tip li {
    margin-bottom: 10px;
    color: #666;
}

.scan-button {
    margin: 30px 0;
}

.scan-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    background-color: #07C160;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-size: 16px;
    transition: background-color 0.3s;
}

.scan-btn:hover {
    background-color: #06AD56;
}

.wechat-icon {
    width: 24px;
    height: 24px;
    margin-right: 8px;
}

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

.modal.show {
    display: block;
}

.modal-content {
    position: relative;
    background-color: #fff;
    margin: 10% auto;
    padding: 20px;
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .side-menu {
        position: fixed;
        left: -250px;
        top: 0;
        height: 100%;
        transition: left 0.3s ease;
    }
    
    .side-menu.expanded {
        left: 0;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .layout {
        flex-direction: column;
    }
    
    .header {
        padding: 12px;
    }
    
    #mainContentArea {
        padding: 12px;
    }
    
    .welcome-image {
        margin: 10px -12px;
    }
}

/* 管理页面样式 */
.admin-container {
    padding: 40px;
    max-width: 1400px;
    margin: 0 auto;
    background: var(--secondary-color);
    min-height: calc(100vh - 60px);
    animation: fadeIn var(--transition-normal) ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* 添加网格背景 */
.admin-container::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(var(--secondary-color) 2px, transparent 2px),
        linear-gradient(90deg, var(--secondary-color) 2px, transparent 2px);
    background-size: 50px 50px;
    background-position: -2px -2px;
    opacity: 0.4;
    z-index: -1;
    pointer-events: none;
}

/* 面板样式 */
.admin-panel {
    background: #fff;
    border-radius: var(--border-radius-lg);
    padding: 32px;
    margin-bottom: 48px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal) ease;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.admin-panel::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-normal) ease;
}

.admin-panel:hover::after {
    opacity: 1;
}

.admin-panel:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}
/* 面板头部样式 */
.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--border-color);
}

.panel-header h2 {
    margin: 0;
    font-size: 20px;
    color: var(--text-primary);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.panel-header h2::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 20px;
    background: var(--gradient-primary);
    border-radius: 2px;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}
.stat-card {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 6px;
    text-align: center;
}
.stat-number {
    font-size: 24px;
    font-weight: bold;
    color: #007bff;
}
.stat-label {
    color: #6c757d;
    margin-top: 5px;
}
/* 表格样式 */
.data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin-top: 20px;
    background: #fff;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    animation: slideUp var(--transition-normal) ease;
}

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

.data-table tbody tr {
    transition: all var(--transition-fast) ease;
}

.data-table tbody tr:hover {
    transform: translateX(5px);
}

.data-table th,
.data-table td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s ease;
}

.data-table th {
    background: var(--gradient-primary);
    color: #fff;
    font-weight: 500;
    text-transform: uppercase;
    font-size: 13px;
    letter-spacing: 0.5px;
}

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

.data-table tbody tr:hover td {
    background-color: var(--secondary-color);
}

.data-table tbody tr:nth-child(even) {
    background-color: rgba(245, 247, 250, 0.5);
}
/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(44, 62, 80, 0.85);
    overflow-y: auto;
    backdrop-filter: blur(4px);
    transition: all 0.3s ease;
}
/* 模态框内容样式 */
.modal-content {
    background-color: #fff;
    margin: 5% auto;
    padding: 40px;
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 500px;
    position: relative;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
    animation: modalSlideIn var(--transition-normal) cubic-bezier(0.68, -0.55, 0.265, 1.55);
    border: 1px solid var(--border-color);
}

.modal-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--border-radius-lg);
    padding: 2px;
    background: var(--gradient-primary);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, 
                 linear-gradient(#fff 0 0);
    -webkit-mask-composite: destination-out;
    mask-composite: exclude;
}

@keyframes modalSlideIn {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}
.modal-header h3 {
    margin: 0;
    font-size: 18px;
    color: #333;
}
.close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #666;
}
.modal-body {
    flex: 1;
    overflow-y: auto;
    padding-right: 10px;
}
/* 表单样式 */
.form-group {
    margin-bottom: 24px;
}

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

.form-group input,
.form-group select {
    width: 100%;
    padding: 14px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-md);
    font-size: 14px;
    transition: all var(--transition-normal) ease;
    color: var(--text-primary);
    background-color: #fff;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
}

.form-group input:hover,
.form-group select:hover {
    border-color: var(--primary-light);
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1), 
                inset 0 2px 4px rgba(0, 0, 0, 0.05);
    outline: none;
    transform: translateY(-1px);
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
    outline: none;
}

.form-group input::placeholder {
    color: var(--text-secondary);
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%237f8c8d' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}
.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 20px;
    padding-top: 10px;
    border-top: 1px solid #eee;
    background: #fff;
    position: sticky;
    bottom: 0;
}
/* 按钮样式 */
.btn {
    padding: 12px 24px;
    border-radius: var(--border-radius-md);
    border: none;
    cursor: pointer;
    min-width: 120px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all var(--transition-normal) ease;
    text-transform: uppercase;
    font-size: 13px;
    letter-spacing: 0.8px;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn:active::after {
    width: 300px;
    height: 300px;
    opacity: 0;
}

.btn i {
    transition: transform var(--transition-normal) ease;
}

.btn:hover i {
    transform: rotate(180deg);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 2px 4px rgba(74, 144, 226, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 4px 8px rgba(74, 144, 226, 0.4);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: #fff;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--secondary-color);
    border-color: var(--text-secondary);
}
.btn-danger {
    background-color: #dc3545;
    color: white;
}
.action-bar {
    margin-bottom: 20px;
}
@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .data-table {
        display: block;
        overflow-x: auto;
    }
    .modal-content {
        margin: 0;
        width: 100%;
        height: 100%;
        border-radius: 0;
        max-height: 100vh;
    }
    .form-actions {
        padding: 10px;
    }
    .btn {
        flex: 1;
        white-space: nowrap;
    }
}

/* 图标替换系统 - 使用Unicode字符替代Material Icons */
.icon-menu::before { content: '☰'; font-family: Arial, sans-serif; font-size: 18px; }
.icon-person::before { content: '👤'; font-family: Arial, sans-serif; font-size: 16px; }
.icon-logout::before { content: '⤴'; font-family: Arial, sans-serif; font-size: 16px; }
.icon-star::before { content: '★'; font-family: Arial, sans-serif; font-size: 16px; color: #ffd700; }
.icon-close::before { content: '✕'; font-family: Arial, sans-serif; font-size: 16px; }
.icon-chevron-right::before { content: '▶'; font-family: Arial, sans-serif; font-size: 12px; }

/* 隐藏Material Icons文本内容，只显示替换图标 */
.material-icons {
    font-size: 0 !important;
    line-height: 1;
    position: relative;
    display: inline-block;
    width: auto;
    height: auto;
    vertical-align: middle;
}

/* 根据内容显示对应的Unicode图标 */
.material-icons[data-icon="menu"]::after,
.material-icons:contains("menu")::after {
    content: '☰';
    font-family: Arial, sans-serif;
    font-size: 18px;
    color: #333;
}

.material-icons[data-icon="person"]::after,
.material-icons:contains("person")::after {
    content: '👤';
    font-family: Arial, sans-serif;
    font-size: 16px;
    color: #4fc3f7;
}

.material-icons[data-icon="logout"]::after,
.material-icons:contains("logout")::after {
    content: '⤴';
    font-family: Arial, sans-serif;
    font-size: 16px;
    color: #4fc3f7;
}

.material-icons[data-icon="star"]::after,
.material-icons:contains("star")::after {
    content: '★';
    font-family: Arial, sans-serif;
    font-size: 16px;
    color: #ffd700;
}

.material-icons[data-icon="close"]::after,
.material-icons:contains("close")::after {
    content: '✕';
    font-family: Arial, sans-serif;
    font-size: 16px;
    color: #666;
}

.material-icons[data-icon="chevron_right"]::after,
.material-icons:contains("chevron_right")::after {
    content: '▶';
    font-family: Arial, sans-serif;
    font-size: 12px;
    color: #666;
    transition: transform 0.3s ease;
}

/* 箭头旋转动画 */
.material-icons.arrow[data-icon="chevron_right"]::after {
    transform-origin: center;
    transition: transform 0.3s ease;
}

/* 兜底方案：如果没有data-icon属性，根据文本内容显示图标 */
.material-icons:not([data-icon])::after {
    font-family: Arial, sans-serif;
    color: #4fc3f7;
}

.material-icons:not([data-icon])[class*="menu"]::after,
.material-icons:not([data-icon]):contains("menu")::after {
    content: '☰';
    font-size: 18px;
}

.material-icons:not([data-icon])[class*="person"]::after,
.material-icons:not([data-icon]):contains("person")::after {
    content: '👤';
    font-size: 16px;
}

.material-icons:not([data-icon])[class*="logout"]::after,
.material-icons:not([data-icon]):contains("logout")::after {
    content: '⤴';
    font-size: 16px;
}

.material-icons:not([data-icon])[class*="star"]::after,
.material-icons:not([data-icon]):contains("star")::after {
    content: '★';
    font-size: 16px;
    color: #ffd700;
}

.material-icons:not([data-icon])[class*="close"]::after,
.material-icons:not([data-icon]):contains("close")::after {
    content: '✕';
    font-size: 16px;
}

/* 确保图标在移动端也能正确显示 */
@media (max-width: 768px) {
    .material-icons::after {
        display: inline-block;
        vertical-align: middle;
    }
    
    .mobile-menu-btn .material-icons::after {
        color: #333 !important;
    }
}

/* 操作按钮图标样式 */
.material-icons[data-icon="edit"]::after,
.material-icons:not([data-icon]):contains("edit")::after {
    content: '✏';
    font-family: Arial, sans-serif;
    font-size: 16px;
    color: #4fc3f7;
}

.material-icons[data-icon="delete"]::after,
.material-icons:not([data-icon]):contains("delete")::after {
    content: '🗑';
    font-family: Arial, sans-serif;
    font-size: 16px;
    color: #dc3545;
}

.material-icons[data-icon="lock"]::after,
.material-icons:not([data-icon]):contains("lock")::after {
    content: '🔒';
    font-family: Arial, sans-serif;
    font-size: 14px;
    color: #6c757d;
}

/* 用户管理页面图标样式 */
.material-icons[data-icon="people"]::after,
.material-icons:not([data-icon]):contains("people")::after {
    content: '👥';
    font-family: Arial, sans-serif;
    font-size: 16px;
    color: #4fc3f7;
}

.material-icons[data-icon="add"]::after,
.material-icons:not([data-icon]):contains("add")::after {
    content: '➕';
    font-family: Arial, sans-serif;
    font-size: 16px;
    color: #4fc3f7;
}

.material-icons[data-icon="visibility"]::after,
.material-icons:not([data-icon]):contains("visibility")::after {
    content: '👁';
    font-family: Arial, sans-serif;
    font-size: 16px;
    color: #6c757d;
}

.material-icons[data-icon="visibility_off"]::after,
.material-icons:not([data-icon]):contains("visibility_off")::after {
    content: '🙈';
    font-family: Arial, sans-serif;
    font-size: 16px;
    color: #6c757d;
}