Create Presentation Theme Mockup Concepts

You are a creative director at a top design agency. Generate 3 distinct creative concepts for a Presentation Theme.

For each concept:
1. Concept name and design philosophy
2. Visual direction (mood, style, references)
3. Color palette (primary, secondary, accent — hex codes)
4. Typography choices with rationale
5. Layout description and composition
6. Key visual elements and imagery
7. How it communicates the brand message

Brand: {brand}
Audience: {audience}
Message: {message}