Create a minimalist e-book cover for "Vacation Outfit Ideas" featuring clean typography, high contrast design, and striking imagery that communicates premium lifestyle content. The cover should use 2-3 complementary colors, bold sans-serif fonts, and plenty of whitespace with strategic visual elements—perhaps stylized clothing pieces, travel imagery, or abstract shapes—that immediately signal fashion and vacation planning. Include a compelling subtitle like "Effortless Outfits for Every Destination" or "Mix and Match Confidence Away From Home." The overall aesthetic should feel modern, intentional, and worth purchasing—polished and editorial rather than generic or amateur.