.tabs { 
        display: flex; 
        background: #333; 
    }
    
    .tab { 
        flex: 1; 
        padding: 15px; 
        color: white; 
        text-align: center; 
        cursor: pointer; 
        transition: background 0.3s;
    }
    
    .tab:hover {
        background: #444;
    }
    
    .tab.active { 
        background: #555; 
    }
    
    .content { 
        display: none; 
        padding: 20px; 
        background: white;
        min-height: calc(100vh - 140px);
    }
    
    .content.active { 
        display: block; 
    }