:root {
            --primary-color: #4f46e5;
            --secondary-color: #6366f1;
            --text-color: #1e293b;
            --bg-color: #f8fafc;
            --border-radius: 8px;
            --transition: all 0.3s ease;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        

        
        .nav-plugin {
            position: fixed;
            line-height:30px;
            top: 0;
            left: 0;
            width: 180px;
            height: 100vh;
            background: white;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            transition: var(--transition);
            overflow: hidden;font-size:14px;text-align:left;
        }
        .nav-plugin.expanded {
            width: 180px;height:50px;
        }
            
        .nav-header {
            padding: 16px;
            background: var(--primary-color);
            color: white;
            font-weight: bold;
            font-size: 18px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .nav-toggle {
            /*display: none;*/
            background: none;
            border: none;
            color: white;
            font-size: 20px;
            cursor: pointer;
        }
        
        .nav-content {
            flex: 1;
            overflow-y: auto;
            padding: 8px 0;
        }
        
        .category {
            margin-bottom: 4px;
        }
        
        .category-header {
        	background: rgba(79, 70, 229, 0.1);
            padding: 12px 16px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 500;
            color: var(--text-color);
            transition: var(--transition);
        }
        
        .category-header:hover {
            background: rgba(79, 70, 229, 0.1);
        }
        
        .category-header i {
            transition: var(--transition);
        }
        
        .category-header.collapsed i {
            transform: rotate(-90deg);
        }
        
        .nav-links {
            padding-left: 8px;
            overflow: hidden;
            transition: var(--transition);
            max-height: 500px;
        }
        
        .nav-links.collapsed {
            max-height: 0;
        }
        
        .link-item {
            padding: 10px 16px 10px 24px;
            cursor: pointer;
            color: var(--text-color);
            transition: var(--transition);
            display: block;
            text-decoration: none;
            height:40px;overflow: hidden;
        }
        
        .link-item:hover {
            background: rgba(79, 70, 229, 0.1);
            color: var(--primary-color);
        }
        
        @media (max-width: 1024px) {
            .nav-plugin {
                width: 60px;height:50px;
            }
            
            .nav-header span {
                display: none;
            }
            
            .nav-toggle {
                display: block;
            }
            
            .category-header span {
                display: none;
            }
            
            .nav-links {
                display: none;
            }
            
            
            .nav-plugin.expanded {
                width: 180px;height:100vh;
            }
            
            .nav-plugin.expanded .nav-header span {
                display: inline;
            }
            
            .nav-plugin.expanded .category-header span {
                display: inline;
            }
            
            .nav-plugin.expanded .nav-links {
                display: block;
            }
        }