What is the main problem in structuring requirements in this case? - No clear performance metrics - Requirements should be clearly separated for easier analysis and implementation - Data analysis does not consider all scenarios - Encryption methods are not defined - Security requirements are not highlighted separately - No structure for styling requirements

The main problem with structuring requirements in this case is the lack of a clear hierarchy and categorization of requirements. All requirements are mixed without separation into functional, non-functional, production, security, and styling categories. This complicates analysis, prioritization, and subsequent implementation.

For example, security requirements (encryption, security) should be highlighted in a separate section with specific criteria and methods. Similarly, performance requirements should contain clear metrics to evaluate their fulfillment. Styling requirements should also be structured separately to avoid mixing them with functionality.

Such separation facilitates communication between teams, helps identify gaps and contradictions, and simplifies testing and validation of requirements.