Style: Flat Design. Type: General. Keywords: 2D, minimalist, bold colors, no shadows, clean lines, simple shapes, typography-focused, modern, icon-heavy. Primary Colors: Solid bright: Red, Orange, Blue, Green, limited palette (4-6 max). Secondary Colors: Complementary colors, muted secondaries, high saturation, clean accents. Effects & Animation: No gradients/shadows, simple hover (color/opacity shift), fast loading, clean transitions (150-200ms ease), minimal icons. Best For: Web apps, mobile apps, cross-platform, startup MVPs, user-friendly, SaaS, dashboards, corporate. Do Not Use For: Complex 3D, premium/luxury, artistic portfolios, immersive experiences, high-detail. Light Mode: ✓ Full. Dark Mode: ✓ Full. Performance: ⚡ Excellent. Accessibility: ✓ WCAG AAA. Mobile-Friendly: ✓ High. Conversion-Focused: ✓ High. Framework Compatibility: Tailwind 10/10, Bootstrap 10/10, MUI 9/10. Era/Origin: 2010s Modern. Complexity: Low. AI Prompt Keywords: Create a flat, 2D interface with bold colors, no shadows/gradients, clean lines, simple geometric shapes, icon-heavy, typography-focused, minimal ornamentation. Use 4-6 solid, bright colors in a limited palette with high saturation.. CSS/Technical: box-shadow: none, background: solid color, border-radius: 0-4px, color: solid (no gradients), fill: solid, stroke: 1-2px, font: bold sans-serif, icons: simplified SVG. Implementation Checklist: ☐ No shadows/gradients, ☐ 4-6 solid colors max, ☐ Clean lines consistent, ☐ Simple shapes used, ☐ Icon-heavy layout, ☐ High saturation colors, ☐ Fast loading verified. Design System Variables: --shadow: none, --color-palette: 4-6 solid, --border-radius: 2px, --gradient: none, --icons: simplified SVG, --animation: minimal 150-200ms.