# Active Context

## Current Status
- Initializing the project environment.
- Documentation phase (Memory Bank & Blueprint).

## Recent Changes
- Created `memory-bank/projectBrief.md`.
- Created `memory-bank/productContext.md`.
- Implemented unit conversion on toggle in `src/main.ts`.
- Extracted `convertUnits` utility and added tests.

## Current Focus
- Completing Memory Bank initialization.
- Drafting PRD and Architecture.
- Setting up the Vite/TypeScript/Tailwind environment.

## Active Decisions
- **Dark Mode Implementation**: Adopted a Dracula Midnight theme (`#21222c` background) as the primary interface style. Added custom Dracula color palette to `tailwind.config.js`.
- Using **Vite** for the build tool.
- Using **Vanilla TypeScript** to avoid framework overhead.
- Using **Vitest** for unit testing calculation logic.
- Target: A single-page application that can be built into a self-contained output.
- **Unit Toggle Behavior**: Switching units now automatically converts existing input values using a factor of 25.4. MM values are rounded to 1 decimal, Inches to 2 decimals.