Create distinctive, production-grade terminal user interfaces with high design quality. Use this skill when building CLI tools, TUI applications, or terminal-based interfaces. Generate creative, polished code that avoids generic terminal aesthetics.
Design Thinking
Before coding, understand the context and commit to a BOLD aesthetic direction:
1- Purpose: What problem does this interface solve? Who uses it? What's the workflow? 2- Tone: Pick an extreme: hacker/cyberpunk, retro-computing (80s/90s), minimalist zen, maximalist dashboard, synthwave neon, monochrome brutalist, corporate mainframe, playful/whimsical, matrix-style, steampunk terminal, vaporwave, military/tactical, art deco, paper-tape nostalgic 3- Constraints: Technical requirements (Python Rich, Go bubbletea, Rust ratatui, Node.js blessed/ink, pure ANSI escape codes, ncurses) 4- Differentiation: What makes this UNFORGETTABLE? What's the one thing someone will remember about this terminal experience?
Choose a clear conceptual direction and execute it with precision. A dense information dashboard and a zen single-focus interface both work—the key is intentionality, not intensity.
Box Drawing & Borders
Choose border styles that match your aesthetic:
Single line: ┌─┐│└┘ — Clean, modern Double line: ╔═╗║╚╝ — Bold, formal, retro-mainframe Rounded: ╭─╮│╰╯ — Soft, friendly, modern Heavy: ┏━┓┃┗┛ — Strong, industrial Dashed/Dotted: ┄┆ — Light, airy, informal ASCII only: +-+| — Retro, universal compatibility Block characters: █▀▄▌▐ — Chunky, bold, brutalist Custom Unicode: Mix symbols like ◢◣◤◥, ●○◐◑, ▲▼◀▶ for unique frames
Avoid defaulting to simple single-line boxes. Consider asymmetric borders, double-thick headers, or decorative corners like ◆, ◈, ✦, ⬡.
Color & Theme
Commit to a cohesive palette. Terminal color strategies:
ANSI 16: Classic, universal. Craft distinctive combinations beyond default red/green/blue 256-color: Rich palettes. Use color gradients, subtle background variations True color (24-bit): Full spectrum. Gradient text, smooth color transitions Monochrome: Single color with intensity variations (dim, normal, bold, reverse). Elegant constraint
Create atmosphere with:
Background color blocks for sections Gradient fills using block characters ░▒▓█ Color-coded semantic meaning (but avoid cliché red=bad, green=good) Inverted/reverse video for emphasis Dim text for secondary information, bold for primary
Palette examples (invent your own):
Cyberpunk: Hot pink #ff00ff, electric cyan #00ffff, deep purple #1a0a2e background Amber terminal: #ffb000 on black, like vintage CRTs Nord-inspired: Cool blues and muted greens on dark blue-gray Hot Dog Stand: Intentionally garish yellow/red (for playful/ironic UIs) Typography & Text Styling
The terminal is ALL typography. Make it count:
ASCII art headers: Use figlet-style banners, custom letterforms, or Unicode art Text weight: Bold, dim, normal — create visual hierarchy Text decoration: Underline, strikethrough, italic (where supported) Letter spacing: Simulate with spaces for headers: H E A D E R Case: ALL CAPS for headers, lowercase for body, mixed for emphasis Unicode symbols: Enrich text with → • ◆ ★ ⚡ λ ∴ ≡ ⌘ Custom bullets: Replace - with ▸ ◉ ✓ ⬢ › or themed symbols
ASCII Art Styles: Block: ███████╗██╗██╗ ███████╗ Slant: / / / // / / _/ Small: ╔═╗┌─┐┌─┐ Minimal: [ HEADER ]
Layout & Spatial Composition
Break free from single-column output:
Panels & Windows: Create distinct regions with borders Columns: Side-by-side information using careful spacing Tables: Align data meaningfully, use Unicode table characters Whitespace: Generous padding inside panels, breathing room between sections Density: Match to purpose — dashboards can be dense, wizards should be sparse Hierarchy: Clear visual distinction between primary content, secondary info, and chrome Asymmetry: Off-center titles, weighted layouts, unexpected alignments Motion & Animation
Terminals support dynamic content:
Spinners: Beyond basic |/-. Use Braille patterns ⠋⠙⠹⠸⠼⠴⠦⠧⠇⠏, dots ⣾⣽⣻⢿⡿⣟⣯⣷, custom sequences Progress bars: ▓░, █▒, [=====> ], or creative alternatives like ◐◓◑◒ Typing effects: Reveal text character-by-character for drama Transitions: Wipe effects, fade in/out with color intensity Live updates: Streaming data, real-time charts Data Display Sparklines: ▁▂▃▄▅▆▇█ for inline mini-charts Bar charts: Horizontal bars with block characters Tables: Smart column sizing, alternating row colors, aligned numbers Trees: ├── └── │ for hierarchies Status indicators: ● green, ○ empty, ◐ partial, ✓ complete, ✗ failed Gauges: [████████░░] with percentage Decorative Elements Add character without clutter: Dividers: ───── ═════ •••••• ░░░░░░ ≋≋≋≋≋≋ Section markers: ▶ SECTION, [ SECTION ], ─── SECTION ───, ◆ SECTION Background textures: Patterns using light characters like · ∙ ░ Icons: Nerd Font icons if available: Anti-Patterns to Avoid
NEVER use generic terminal aesthetics like:
Plain unformatted text output Default colors without intentional palette Basic [INFO], [ERROR] prefixes without styling Simple ---- dividers Walls of unstructured text Generic progress bars without personality Boring help text formatting Inconsistent spacing and alignment
Library Quick Reference Python: Rich, Textual Go: Bubbletea, Lipgloss Rust: Ratatui Node.js: Ink, Blessed
ANSI Escape Codes: \x1b[1m Bold \x1b[3m Italic \x1b[4m Underline \x1b[31m Red foreground \x1b[38;2;R;G;Bm True color \x1b[2J Clear screen
The terminal is a canvas with unique constraints and possibilities. Don't just print text—craft an experience.
Match implementation complexity to the aesthetic vision. A dense monitoring dashboard needs elaborate panels and live updates. A minimal CLI needs restraint, precision, and perfect alignment. Elegance comes from executing the vision well.