 },
            tooltip: {
                x: {
                    show: true
                },
                y: {
                    title: {
                        formatter: function(seriesName) {
                            return seriesName;
                        }
                    }
                },
                marker: {
                    show: false
                },
                theme: 'light'
            }
        };
        
        // Initialize Activity Chart
        const