Design a book cover for a comprehensive guide for beginners entering the bodybuilding world. The cover should evoke a sense of inspiration, motivation, and the transformative journey of bodybuilding. Use a bold and dynamic color scheme incorporating red, black, and silver to convey passion, strength, and sophistication. The cover should feature an abstract or stylized illustration representing the concept of transformation and growth, such as a silhouette of a bodybuilder transitioning from a beginner's physique to a more developed form, symbolizing the reader's potential journey. Incorporate geometric shapes or lines to add depth and movement, suggesting progression and dynamism. Include a subtle texture or pattern in the background to give the cover depth without overwhelming the main design elements. The overall look should be sleek and professional but also accessible, appealing to beginners who are just starting their bodybuilding journey.