Design System: Terminal Green

1. Visual Theme & Atmosphere

Developer-focused, hacker aesthetic landing page. Ideal for portfolios de desenvolvedores, ferramentas cli, plataformas devops, technical documentation. AI-ready template.

• Density: 8/10 — Dense
• Variance: 4/10 — Moderate
• Motion: 6/10 — Expressive

2. Color Palette & Roles

• GitHub Dark (#0d1117) — Dark surface, primary background
• Terminal Green (#39d353) — Secondary surface or text color
• White Text (#e6edf3) — Light surface, card backgrounds
• Dark Border (#30363d) — Deep contrast surface
• Muted Green (#238636) — Secondary text, borders, muted elements
• Dim Text (#8b949e) — Primary text color
• Code BG (#161b22) — Primary background surface

3. Typography Rules

• Display / Hero: JetBrains Mono — Weight 700, tight tracking, used for headline impact
• Body: JetBrains Mono — Weight 400, 16px/1.6 line-height, max 72ch per line
• UI Labels / Captions: JetBrains Mono — 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: Rounded (6px) 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: Rounded (6px) 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: Spring — stiffness 120, damping 20. Confident, weighted transitions.
• Entry animations: Fade + translate-Y (16px → 0) over 480ms ease-out. Staggered cascades for lists: 100ms between items.
• Hover states: Scale(1.03) + shadow lift over 200ms.
• Page transitions: Fade + slide (300ms).
• 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: Terminal Green
• Type: Developer-Focused, Hacker Aesthetic, Monospace
• Keywords: terminal, green, hacker, developer, monospace, JetBrains Mono, scan lines, blinking cursor, code syntax, GitHub dark, CLI
• Era: 2024-2026 Developer Aesthetic
• Light/Dark: ✗ No / ✓ Only

Color Palette

• Primary: GitHub Dark #0d1117, Terminal Green #39d353, White Text #e6edf3
• Secondary: Dark Border #30363d, Muted Green #238636, Dim Text #8b949e, Code BG #161b22

Visual Effects

Scan lines overlay via CSS, blinking cursor animation, code syntax styling with colored tokens, terminal-style borders, monospace everything, smooth transitions 150ms

AI Visual Direction

Design a developer-focused, hacker aesthetic landing page. Use GitHub dark background (#0d1117) with terminal green (#39d353) as primary accent. JetBrains Mono as the ONLY font (monospace throughout). Add scan lines overlay using CSS. Include blinking cursor animation. Style code blocks with syntax coloring. Terminal-style borders and UI elements. Everything should feel like a CLI/terminal interface.

CSS Technical

font-family: 'JetBrains Mono', monospace, background: #0d1117, color: #e6edf3, .scan-lines { background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,0.1) 2px, rgba(0,0,0,0.1) 4px) }, .cursor-blink { animation: blink 1s step-end infinite }, @keyframes blink { 50% { opacity: 0 } }, .terminal-border { border: 1px solid #30363d }, .green-accent { color: #39d353 }, pre code { background: #161b22; padding: 16px; border-radius: 6px }

Design System Variables

--bg-primary: #0d1117, --accent-green: #39d353, --text-primary: #e6edf3, --text-muted: #8b949e, --border-color: #30363d, --code-bg: #161b22, --font-mono: 'JetBrains Mono', --scan-line-gap: 4px, --cursor-speed: 1s

Implementation Checklist

• ☐ JetBrains Mono como única fonte
• ☐ GitHub dark background #0d1117
• ☐ Terminal green #39d353 como accent
• ☐ Scan lines overlay
• ☐ Blinking cursor animation
• ☐ Code syntax styling
• ☐ Terminal-style borders
• ☐ Responsivo mobile/tablet/desktop

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.