I'll create an analytics dashboard with report templates and custom report building functionality.

This analytics dashboard provides users with both pre-built report templates and the ability to create custom reports. Here's what I've built:

1. Main Dashboard Page:

   • Overview metrics showing total users, active sessions, conversion rate, and revenue
   • Tabbed interface to switch between report templates and custom reports
   • Suggested report templates with different visualization types

2. Report Templates Section:

   • Six template cards for common analytics needs (User Acquisition, Revenue Breakdown, etc.)
   • Each template has a description and relevant chart icon
   • Search functionality to find specific templates

3. Custom Reports Section:

   • Display of existing custom reports
   • Quick access to create a new report
   • Last updated information for each report

4. Report Builder Page:

   • Form to name and describe your custom report
   • Interactive builder area where charts appear as you add them

   • Component panel to add different visualization types:

     • Charts (Line, Bar, Pie)
     • Tables
     • KPI metrics
   • Data source selection and date range options

The interface is fully responsive and uses shadcn/ui components for a clean, professional look. Users can easily navigate between templates and custom reports, and the report builder provides a visual preview of each chart type as it's added to the report.

To use this dashboard, you can click on any template to use it as a starting point, or create a completely custom report by clicking the "New Report" button.