Design System: High-Contrast Tech

1. Visual Theme & Atmosphere

High-contrast tech interface with strict 60/30/10 color distribution. Ideal for ux/ui de produto digital, dashboards analytics, saas platforms, conteúdo tecnológico, apps b2b. AI-ready template.

• Density: 8/10 — Dense
• Variance: 4/10 — Moderate
• Motion: 4/10 — Subtle

2. Color Palette & Roles

• Night Black (#1E272E) — Dark surface, primary background
• Cloud White (#F5F6FA) — Secondary surface
• Electric Blue (#0984E3) — Secondary accent

3. Typography Rules

• Display / Hero: System UI stack (-apple-system, sans-serif) — Weight 700, tight tracking, used for headline impact
• Body: System UI stack (-apple-system, sans-serif) — Weight 400, 16px/1.6 line-height, max 72ch per line
• UI Labels / Captions: System UI stack (-apple-system, sans-serif) — 0.875rem, weight 500, slight letter-spacing
• Monospace: JetBrains Mono — Used for code, metadata, and technical values

Scale:

• Hero: clamp(2.5rem, 5vw, 4rem)
• H1: 2.25rem
• H2: 1.5rem
• Body: 1rem / 1.6
• Small: 0.875rem

4. Component Stylings

• Primary Button: Generously rounded (1.5rem) shape. Accent color fill. Hover: 8% darken + subtle lift shadow. Active: -1px translate tactile press. Font weight 600. No outer glows.
• Secondary / Ghost Button: Outline variant. 1.5px border in muted color. Text in primary color. Hover: subtle background fill.
• Cards: Generously rounded (1.5rem) corners. Surface background. Subtle shadow (0 2px 12px rgba(0,0,0,0.06)). 1px border stroke.
• Inputs: Label above input. 1px border stroke. Focus ring: 2px accent color offset 2px. Error text below in semantic red. No floating labels.
• Navigation: Primary surface background. Active item: accent color indicator. Font weight 500 when active.
• Skeletons: Shimmer animation matching component dimensions. No circular spinners.
• Empty States: Icon-based composition with descriptive text and action button.

5. Layout Principles

• Grid: CSS Grid primary. Max-width containment: 1280px centered with 1.5rem side padding.
• Spacing rhythm: Balanced. Base unit: 0.5rem (8px).
• Section vertical gaps: clamp(4rem, 8vw, 8rem).
• Hero layout: Split-screen (text left, visual right).
• Feature sections: Zig-zag alternating text+image rows. No 3-equal-columns.
• Mobile collapse: All multi-column layouts collapse below 768px. No horizontal overflow.
• z-index contract: base (0) / sticky-nav (100) / overlay (200) / modal (300) / toast (500).

6. Motion & Interaction

• Physics: Ease-out curves, 200-300ms duration. Smooth and predictable.
• Entry animations: Fade + translate-Y (16px → 0) over 420ms ease-out. Staggered cascades for lists: 80ms between items.
• Hover states: Subtle color shift + shadow adjustment over 200ms.
• Page transitions: Fade only (200ms).
• Performance: Only transform and opacity animated. No layout-triggering properties.

7. Anti-Patterns (Banned)

• No emojis in UI — use icon system only (Lucide, Heroicons)
• No pure white (#FFFFFF) backgrounds — use off-white or dark surfaces
• No oversaturated accent colors (saturation cap: 80%)
• No 3-column equal-width feature layouts — use zig-zag or asymmetric grid
• No h-screen — use min-h-[100dvh]
• No AI copywriting clichés: "Elevate", "Seamless", "Unleash", "Next-Gen"
• No broken external image links — use picsum.photos or inline SVG
• No generic lorem ipsum in demos

Act as a Senior Frontend Engineer and Expert UI Designer. Your task is to code a complete Landing Page on the first attempt.

• Landing Page Theme:
• Sections to add:

Generate the final code immediately following these definitions:

Style

• Name: High-Contrast Tech
• Type: Dark, Precise, High-Contrast, Conversion-Focused
• Keywords: tech, dark mode, contrast, neon, dashboards, product UI, high readability, modern, digital, performance
• Era: 2020s Tech Product Design
• Light/Dark: ✓ Full / ✓ Full

Color Palette

• Primary: 60%: Night Black #1E272E como base de dark mode para fundos principais e áreas de profundidade
• Secondary: 30%: Cloud White #F5F6FA para textos/ícones + Electric Blue #0984E3 para navegação secundária e blocos informativos

Visual Effects

10%: Cyan Neon #00CEC9 para botões primários, notificações e elementos interativos; brilho controlado, bordas técnicas e transições rápidas (180-220ms)

AI Visual Direction

Create a high-contrast tech interface with strict 60/30/10 color distribution. Use 60% night black (#1E272E) as the dark-mode foundation, 30% cloud white (#F5F6FA) plus electric blue (#0984E3) for readability and structural hierarchy, and 10% cyan neon (#00CEC9) for primary actions and interaction cues. Emphasize clarity, data-driven hierarchy, and crisp UI components.

CSS Technical

background: #1E272E; color: #F5F6FA; --blue-struct: #0984E3; --accent-neon: #00CEC9; border: 1px solid rgba(245,246,250,0.12); box-shadow: 0 0 0 1px rgba(0,206,201,0.15), 0 8px 24px rgba(0,0,0,0.35); transition: all 0.2s ease;

Design System Variables

--color-dominant-60: #1E272E; --color-secondary-30-text: #F5F6FA; --color-secondary-30-struct: #0984E3; --color-accent-10: #00CEC9; --radius-md: 10px; --focus-ring: 0 0 0 3px rgba(0,206,201,0.35); --shadow-tech: 0 8px 24px rgba(0,0,0,0.35);

Implementation Checklist

• ☐ Base dark #1E272E predominante (60%)
• ☐ Leitura forte com #F5F6FA
• ☐ Estrutura secundária em #0984E3
• ☐ Destaque neon #00CEC9 limitado a 10%
• ☐ Contraste AA/AAA validado
• ☐ Responsivo

Execution Rules

1. Strictly follow the defined visual style.
2. Use high-quality inline SVG icons (Heroicons or Lucide style) — NEVER use emojis as icons.
3. Add cursor-pointer and smooth hover states (transition-all) on all interactive elements.
4. Required Page Structure:
   • Navbar (Logo + Links + CTA)
   • Hero Section (Impactful Headline + Subtitle + 2 buttons + 3D/Abstract visual element via CSS)
   • Features (3 cards with icons)
   • Testimonials (3 cards)
   • Pricing (3 tiers, highlight the middle one)
   • Final CTA
   • Full Footer with social links, privacy policy, terms of use, contact and SEO links.
5. All text content must be in English.
6. The visual must be CLEARLY distinct — do not create a "default Bootstrap" design. Force the use of the provided design system variables.
7. Use <style> tags in the head for custom classes (especially for complex backdrop-filter effects and animations) that Tailwind CDN doesn't cover.
8. Full Responsiveness: Layout must adapt perfectly to Mobile, Tablet and Desktop (vertical stack on mobile).
9. Include basic SEO, Viewport and Open Graph meta tags in <head>.
10. Footer must contain: Copyright 2026, Secondary navigation links and Social media icons.
11. Make the creative decisions needed to deliver the complete, functional result now.