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roman-cyber-garage

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更新日2026年3月21日 19:54

Dark cyberpunk design system with complete theme reference — colors, typography, components, modals, tables, cards, badges, buttons, and layout patterns. Use this skill when building dark-themed dashboards, admin panels, trading UIs, or any cyberpunk-aesthetic web interface. Production-tested on real SaaS products.

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roman-rr/roman-cyber-garage

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Roman Cyber Garage

A production-tested dark cyberpunk design system extracted from a live SaaS trading platform. Provides exact design tokens, component CSS, and layout patterns for building visually consistent, professional dark-themed web UIs.

The user provides a frontend task — a page, component, modal, dashboard, or UI element to build. Apply the design system below to produce pixel-consistent output matching the cyberpunk aesthetic.

Fonts

<link rel="preconnect" href="https://fonts.googleapis.com">
<link href="https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@300;400;500;700&display=swap" rel="stylesheet">

Usage	Font	Weight	Size
Body text	`Inter`	400	14px
Headings	`Inter`	600-700	18-36px
Code / Data / Labels	`JetBrains Mono`	400-700	11-13px
Nav brand	`JetBrains Mono`	700	16-18px
Section titles	`JetBrains Mono`	600	12px `uppercase` `letter-spacing: 0.1em`
Badges / Buttons	`JetBrains Mono`	500-700	11-12px
Big metric values	`JetBrains Mono`	700	24-32px

Color Palette

Backgrounds

Token	Value	Usage
`--bg-body`	`#030710`	Page background
`--bg-nav`	`rgba(3,7,16,0.85)`	Nav (+ `backdrop-filter: blur(16px)`)
`--bg-card`	`rgba(127,200,255,0.02)`	Cards, sections
`--bg-card-hover`	`rgba(127,200,255,0.06)`	Card/row hover
`--bg-modal`	`#0d1117`	Modal body
`--bg-modal-alt`	`#0a0f1e`	Alt modal body
`--bg-input`	`#0a0e1a`	Inputs, selects
`--bg-panel`	`#161b22`	Inset panels
`--bg-overlay`	`rgba(0,0,0,0.75)`	Modal overlay (+ `backdrop-filter: blur(6px)`)

Text

Token	Value	Usage
`--text-primary`	`#e2e8f0`	Body text
`--text-secondary`	`#c8d6e5`	Table cells
`--text-muted`	`#6b8299`	Labels, subtitles
`--text-dim`	`#4a6278`	Hints, fine print
`--text-dimmer`	`#3d4f63`	Footer notes

Accents

Token	Value	Usage
`--accent-blue`	`#7fc8ff`	Primary — links, values, brand
`--accent-gold`	`#facc15`	Admin — titles, active states

Semantic / Status Colors

Token	Value	Usage
`--color-success`	`#4ade80`	Green — success, bullish, profit, ON
`--color-warning`	`#facc15`	Yellow — partial, caution
`--color-warning-amber`	`#f59e0b`	Amber — alerts
`--color-danger`	`#f87171`	Red — failed, bearish, loss, OFF
`--color-info`	`#7fc8ff`	Blue — pending
`--color-purple`	`#c084fc`	Purple — features
`--color-cyan`	`#06b6d4`	Cyan — secondary features
`--color-sky`	`#38bdf8`	Sky blue — tertiary
`--color-teal`	`#34d399`	Teal — accents
`--color-emerald`	`#10b981`	Emerald — positive accents
`--color-rose`	`#f43f5e`	Rose — alerts
`--color-indigo`	`#6366f1`	Indigo — gradients

Border Opacity Scale

Level	Value	Usage
subtle	`rgba(127,200,255,0.06)`	Cards, sections
light	`rgba(127,200,255,0.08)`	Table headers
medium	`rgba(127,200,255,0.12)`	Modals
strong	`rgba(127,200,255,0.15)`	Buttons, inputs
glow	`rgba(127,200,255,0.3)`	Hover states

Neon Top Line

Every page starts with a fixed 2px neon gradient:

.neon-line {
  position: fixed; top: 0; left: 0; right: 0; height: 2px; z-index: 101;
  background: linear-gradient(90deg, transparent, #1E88E5 20%, #42A5F5 80%, transparent);
}

Components

Nav Bar

.nav {
  position: fixed; top: 2px; left: 0; right: 0; z-index: 100;
  backdrop-filter: blur(16px); background: rgba(3,7,16,0.85);
  border-bottom: 1px solid rgba(127,200,255,0.06);
  padding: 0 24px; height: 56px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-brand {
  font-family: 'JetBrains Mono', monospace; font-weight: 700;
  font-size: 18px; color: #7fc8ff; letter-spacing: 2px; text-decoration: none;
}
.nav-links { display: flex; gap: 16px; }
.nav-links a { font-size: 14px; color: #6b8299; text-decoration: none; transition: color 0.2s; }
.nav-links a:hover, .nav-links a.active { color: #7fc8ff; }

Page Layout

.container { max-width: 1200px; margin: 0 auto; padding: 80px 20px 40px; }
.page-title {
  font-family: 'JetBrains Mono', monospace; font-size: clamp(24px, 4vw, 36px);
  font-weight: 700; margin-bottom: 8px;
  background: linear-gradient(135deg, #7fc8ff, #a78bfa);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.page-subtitle { color: #6b8299; font-size: 14px; margin-bottom: 24px; }

Summary Card

.summary-card {
  background: rgba(127,200,255,0.02); border: 1px solid rgba(127,200,255,0.06);
  border-radius: 12px; padding: 20px; transition: border-color 0.3s;
}
.summary-card:hover { border-color: rgba(127,200,255,0.15); }
.summary-label {
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.1em; color: #6b8299; margin-bottom: 8px;
}
.summary-value {
  font-family: 'JetBrains Mono', monospace; font-size: 32px; font-weight: 700;
  color: #7fc8ff; text-shadow: 0 0 30px rgba(127,200,255,0.15);
}
.summary-value.green { color: #4ade80; text-shadow: 0 0 30px rgba(74,222,128,0.15); }
.summary-value.red { color: #f87171; }

Content Card / Chart Section

.chart-section {
  background: rgba(127,200,255,0.02); border: 1px solid rgba(127,200,255,0.06);
  border-radius: 12px; padding: 24px; margin-bottom: 32px;
}
.section-title {
  font-family: 'JetBrains Mono', monospace; font-size: 12px;
  text-transform: uppercase; letter-spacing: 0.1em; color: #7fc8ff; margin-bottom: 16px;
}

Data Table

.data-table { width: 100%; border-collapse: collapse; }
.data-table th {
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.05em; color: #6b8299;
  padding: 12px 8px; text-align: left; border-bottom: 1px solid rgba(127,200,255,0.08);
}
.data-table td {
  font-family: 'JetBrains Mono', monospace; font-size: 13px;
  padding: 12px 8px; color: #c8d6e5; border-bottom: 1px solid rgba(127,200,255,0.04);
}
.data-table tr:hover td { background: rgba(127,200,255,0.02); }

Badges

.badge {
  display: inline-block; padding: 3px 10px; border-radius: 6px;
  font-size: 11px; font-weight: 600; font-family: 'JetBrains Mono', monospace;
}
.badge-success { background: rgba(34,197,94,0.15);  color: #4ade80; }
.badge-danger  { background: rgba(239,68,68,0.15);  color: #f87171; }
.badge-warning { background: rgba(234,179,8,0.15);  color: #facc15; }
.badge-info    { background: rgba(127,200,255,0.1);  color: #7fc8ff; }
.badge-muted   { background: rgba(107,130,153,0.15); color: #6b8299; }

Buttons — Tab Switcher

.tab-btn {
  background: rgba(127,200,255,0.04); border: 1px solid rgba(127,200,255,0.08);
  color: #6b8299; padding: 7px 16px; border-radius: 6px;
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  cursor: pointer; transition: all 0.2s;
}
.tab-btn:hover { border-color: rgba(127,200,255,0.2); color: #e2e8f0; }
.tab-btn.active { background: rgba(127,200,255,0.1); border-color: #7fc8ff; color: #7fc8ff; }

Buttons — Color-Coded Action

Replace COLOR_RGB and COLOR_HEX with any semantic color:

.action-btn {
  background: rgba(COLOR_RGB, 0.1); border: 1px solid rgba(COLOR_RGB, 0.25);
  color: COLOR_HEX; padding: 6px 16px; border-radius: 6px;
  font-size: 12px; font-family: 'JetBrains Mono', monospace;
  cursor: pointer; transition: all 0.15s;
}
.action-btn:hover { background: rgba(COLOR_RGB, 0.2); }

Buttons — Toggle (ON/OFF)

.toggle-btn {
  padding: 4px 14px; border-radius: 6px; font-size: 11px; font-weight: 700;
  font-family: 'JetBrains Mono', monospace; border: 1px solid rgba(127,200,255,0.15);
  cursor: pointer; transition: all 0.15s; min-width: 50px; text-align: center;
}
.toggle-btn.on  { background: rgba(74,222,128,0.15); color: #4ade80; border-color: rgba(74,222,128,0.3); }
.toggle-btn.off { background: rgba(248,113,113,0.1);  color: #f87171; border-color: rgba(248,113,113,0.2); }

Buttons — CTA

.btn-cta {
  padding: 10px 24px; border-radius: 10px; border: none;
  background: linear-gradient(135deg, #3b82f6, #6366f1);
  color: #fff; font-size: 14px; font-weight: 500; cursor: pointer;
}
.btn-outline {
  padding: 10px 24px; border-radius: 10px;
  background: rgba(127,200,255,0.08); color: #7fc8ff;
  border: 1px solid rgba(127,200,255,0.15);
  font-family: 'JetBrains Mono', monospace; font-size: 13px; font-weight: 600;
  cursor: pointer; transition: all 0.2s;
}
.btn-outline:hover { background: rgba(127,200,255,0.15); }

Modal

.modal-overlay {
  display: none; position: fixed; inset: 0; z-index: 10000;
  background: rgba(0,0,0,0.75); backdrop-filter: blur(6px);
  align-items: flex-start; justify-content: center;
  padding: 40px 20px; overflow-y: auto;
}
.modal-overlay.open { display: flex; }
.modal-body {
  background: #0d1117; border: 1px solid rgba(ACCENT_RGB, 0.15);
  border-radius: 14px; max-width: 640px; width: 100%;
  padding: 24px; position: relative;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.modal-close {
  position: absolute; top: 14px; right: 14px;
  background: none; border: none; color: #6b8299;
  font-size: 22px; cursor: pointer; padding: 4px 8px; line-height: 1;
}
.modal-title {
  font-family: 'JetBrains Mono', monospace; font-size: 16px;
  font-weight: 700; color: ACCENT_HEX;
}

Form Inputs

.form-input {
  background: rgba(ACCENT_RGB, 0.06); border: 1px solid rgba(ACCENT_RGB, 0.15);
  color: #e2e8f0; padding: 6px 10px; border-radius: 8px;
  font-size: 12px; font-family: 'JetBrains Mono', monospace; outline: none;
}
.form-select {
  background: #0a0e1a; color: #e2e8f0;
  border: 1px solid rgba(127,200,255,0.15); border-radius: 8px;
  padding: 6px 12px; font-family: 'JetBrains Mono', monospace; font-size: 12px;
}

Status Dots

.status-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; }
.status-dot.ok   { background: #4ade80; box-shadow: 0 0 8px rgba(74,222,128,0.5); }
.status-dot.fail { background: #f87171; }

Alert Banners

.banner-error {
  padding: 14px 18px; border-radius: 10px;
  background: rgba(248,113,113,0.12); border: 1px solid rgba(248,113,113,0.4);
  color: #f87171;
}
.banner-warn {
  padding: 14px 18px; border-radius: 12px;
  background: rgba(255,152,0,0.1); border: 1px solid rgba(255,152,0,0.25);
  color: #ffb74d;
}

Glow Effects

/* Text glow */
text-shadow: 0 0 30px rgba(127,200,255,0.15);
/* Box glow on hover */
box-shadow: 0 0 20px rgba(127,200,255,0.06);
/* Modal shadow */
box-shadow: 0 20px 60px rgba(0,0,0,0.5), 0 0 40px rgba(127,200,255,0.05);

Layout Grids

Pattern	CSS
Summary cards	`grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px`
2-column	`grid-template-columns: 1fr 1fr; gap: 16px`
3-column	`grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 16px`
Button row	`display: flex; gap: 6-8px; flex-wrap: wrap`

Mobile (max-width: 768px)

@media (max-width: 768px) {
  .container { padding: 72px 12px 24px; }
  .summary-grid { grid-template-columns: repeat(2, 1fr); }
  .summary-value { font-size: 24px; }
  .chart-container { height: 220px; }
  .hide-mobile { display: none; }
}

Page Skeleton

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>PAGE_TITLE</title>
  <link rel="preconnect" href="https://fonts.googleapis.com">
  <link href="https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@300;400;500;700&display=swap" rel="stylesheet">
  <style>
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    body { background: #030710; color: #e2e8f0; font-family: 'Inter', sans-serif; min-height: 100vh; }
    a { color: #7fc8ff; text-decoration: none; }
  </style>
</head>
<body>
  <div class="neon-line"></div>
  <nav class="nav">
    <a href="/" class="nav-brand">brand_</a>
    <div class="nav-links">
      <a href="/" class="active">PAGE_TITLE</a>
    </div>
  </nav>
  <div class="container">
    <h1 class="page-title">PAGE_TITLE</h1>
    <p class="page-subtitle">Description</p>
  </div>
</body>
</html>

Rules

JetBrains Mono for ALL data, numbers, labels, section titles, badges, buttons, code
Inter for body text, paragraphs, descriptions
NEVER use pure white #fff — max is #e2e8f0
NEVER use solid black borders — always rgba(127,200,255,...) with low opacity
Cards/sections: border-radius: 12px, 1px border
Modals: border-radius: 14px, accent-colored border
Buttons: border-radius: 6-8px
Background opacity: 0.02 rest, 0.04-0.06 hover, 0.1-0.15 active
Border opacity: 0.06 subtle, 0.08-0.12 normal, 0.15-0.3 prominent, 0.5 active
Each feature gets a unique accent color from the semantic palette
Modals close on overlay click
backdrop-filter: blur() — nav 16-20px, modal overlays 4-8px
Always include the neon-line at top of every page
Transition speeds: 0.15s buttons, 0.2s links, 0.3s cards

name	roman-cyber-garage
description	Dark cyberpunk design system with complete theme reference — colors, typography, components, modals, tables, cards, badges, buttons, and layout patterns. Use this skill when building dark-themed dashboards, admin panels, trading UIs, or any cyberpunk-aesthetic web interface. Production-tested on real SaaS products.
license	Complete terms in LICENSE.txt