# Data Leak Casefile

Build a single-file interactive investigation board for a cyber incident: a high-stakes corporate data leak.

## Requirements
- **Theme**: Cyber incident evidence wall. Dark mode, terminal-inspired accents, red string connections.
- **Evidence Types**: Chat extracts (logs), packet captures (PCAP summaries), internal memos, and credential dumps.
- **Interactions**:
  - Click to open a focused reading pane for detailed evidence view.
  - Drag and arrange clues on a canvas.
  - Draw connections between clues to map the incident.
  - Progress tracker showing the percentage of the case solved.
- **Reveal Hook**: Discovering a specific compromised credential links the initial phishing memo to the final database exfiltration, unlocking the true narrative and the "Solved" state.
- **Layout**: A draggable visual node board (the caseboard) taking up most of the screen, with a sidebar for timeline/evidence inventory, and a modal/pane for focused reading.
- **Responsiveness**: Mobile mode provides a touch-friendly alternate list-based investigation view or a pannable canvas.

Implement entirely in `index.html` with inline CSS and JS. Do not use external image files (use CSS/SVG for icons).