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

body {
    font-family: 'Microsoft YaHei', sans-serif;
    background: #f5f7fa;
    color: #333;
}

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

.login-box {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 400px;
}

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

.login-box .subtitle {
    text-align: center;
    color: #999;
    margin-bottom: 30px;
    font-size: 14px;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: #555;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    transition: border-color 0.3s;
}

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

.login-footer {
    margin-top: 20px;
    text-align: center;
    font-size: 13px;
    color: #999;
}

.login-footer a {
    color: #667eea;
}

/* 按钮样式 */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #f0f0f0;
    color: #666;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-block {
    width: 100%;
}

/* 导航栏 */
.navbar {
    background: white;
    padding: 0 30px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-brand {
    display: flex;
    align-items: center;
}

.nav-brand img {
    height: 40px;
    width: auto;
}

.nav-menu {
    display: flex;
    gap: 10px;
    align-items: center;
}

.nav-link {
    padding: 10px 20px;
    color: #666;
    text-decoration: none;
    border-radius: 5px;
    transition: all 0.3s;
    cursor: pointer;
}

.nav-link:hover,
.nav-link.active {
    background: #f0f0ff;
    color: #667eea;
}

/* 下拉菜单样式 */
.nav-dropdown {
    position: relative;
}

.nav-dropdown .dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 5px;
}

/* 下拉菜单 - 使用 opacity 和 visibility 实现延迟隐藏 */
.nav-dropdown .dropdown-menu {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    min-width: 180px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
    border-radius: 8px;
    padding: 8px 0;
    z-index: 1000;
    margin-top: 5px;
    border: 1px solid #e0e0e0;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
}

/* 鼠标在菜单上时也保持显示 */
.nav-dropdown .dropdown-menu:hover {
    opacity: 1;
    visibility: visible;
}

.nav-dropdown .dropdown-item {
    display: block;
    padding: 10px 20px;
    color: #666;
    text-decoration: none;
    transition: all 0.3s;
    font-size: 14px;
}

.nav-dropdown .dropdown-item:hover {
    background: #f0f0ff;
    color: #667eea;
}

.nav-dropdown .dropdown-item[data-page] {
    cursor: pointer;
}

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

/* 主容器 */
.main-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 30px;
}

.content-page h2 {
    margin-bottom: 20px;
    color: #333;
}

/* 统计卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.stat-value {
    font-size: 36px;
    font-weight: bold;
    color: #667eea;
    margin-bottom: 10px;
}

.stat-label {
    color: #999;
    font-size: 14px;
}

/* Dashboard 网格 */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.card h3 {
    margin-bottom: 15px;
    color: #333;
    font-size: 16px;
}

/* 筛选栏 */
.filter-bar {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.search-input {
    padding: 10px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    min-width: 200px;
}

/* 数据表格 */
.data-table {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.data-table-item {
    padding: 15px 20px;
    border-bottom: 1px solid #eee;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 10px;
    align-items: center;
}

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

.data-table-header {
    background: #f8f9fa;
    font-weight: 600;
    color: #555;
}

/* 状态标签 */
.status-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.status-pending {
    background: #fff3e0;
    color: #ff9800;
}

.status-active,
.status-verified {
    background: #e8f5e9;
    color: #4caf50;
}

.status-rejected {
    background: #ffebee;
    color: #f44336;
}

.status-completed {
    background: #e3f2fd;
    color: #2196f3;
}

.status-featured {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    padding: 30px;
    border-radius: 10px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 24px;
    cursor: pointer;
    color: #999;
}

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

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

/* 专家卡片列表 */
.expert-card {
    padding: 15px;
    border: 1px solid #eee;
    border-radius: 8px;
    margin-bottom: 15px;
    background: #fafafa;
}

.expert-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.expert-name {
    font-size: 16px;
    font-weight: 600;
}

.expert-info {
    font-size: 13px;
    color: #666;
    margin-bottom: 5px;
}

/* 操作按钮组 */
.action-buttons {
    display: flex;
    gap: 8px;
}

.action-buttons .btn {
    padding: 5px 10px;
    font-size: 12px;
}

/* 响应式 */
@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .navbar {
        padding: 0 15px;
    }
    
    .nav-menu {
        display: none;
    }
}