Interactive Power BI Sales Dashboard

I have a collection of sales files in Excel/CSV format and I need them transformed into a single, interactive Power BI dashboard that lets me see exactly how the business is performing at a glance. The dashboard must surface: • Overall revenue, order counts, and profit—with the ability to filter by date ranges and compare period-over-period. • Detailed breakdowns by product, category, and region so I can spot high-performing lines and under-performers quickly. Data preparation is part of the job: please clean, model, and relate the raw sheets so future file refreshes are one-click simple. Clear DAX measures, Power Query steps, and thoughtful naming conventions are important because I’ll be maintaining the report after hand-off. Deliverables: • .pbix file with a well-structured data model • Set of polished report pages covering the metrics above (including slicers, tooltips, and drill-through views) • Brief hand-off video or document showing how to refresh data and adjust visuals If you can add subtle enhancements—forecasting lines, dynamic KPIs, or mobile-friendly layouts—that would be a plus, though the essentials listed are the priority.