Case Conversion Guide:
• UPPERCASE — All letters capital, useful for emphasis
• lowercase — All letters lowercase, default text
• Title Case — First letter of each word capitalized
• aLtErNaTiNg — Alternating case letters
• camelCase — First word lowercase, rest capitalized (JavaScript variables)
• snake_case — Words separated by underscores (Python variables)
• kebab-case — Words separated by hyphens (CSS classes, URLs)