#pragma once

// KPI card — displays a key metric with trend.
// Usage:
//   float history[] = {10, 12, 11, 15, 18, 17, 20};
//   kpi_card("Revenue", 20000.0f, 12.5f, history, 7, "$%.0f");
//
// Shows:
//   - Label (small, muted)
//   - Value (large font)
//   - Delta badge (green up / red down)
//   - Sparkline of history

void kpi_card(const char* label, float value, float delta_percent,
              const float* history = nullptr, int history_count = 0,
              const char* format = "%.1f");