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blueprinter

Name: Blueprinter
Author: yofine

// Generate technical diagrams using HTML/CSS in Flat Engineering Blueprint style. Use when the user wants to create architecture diagrams, system diagrams, flowcharts, or technical specification sheets that look like engineering blueprints. Triggers on requests for flat diagrams, blueprint-style visualizations, or technical drawings.

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updated:April 1, 2026 at 15:20

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"repository": "yofine/skills"

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Graphic DesignersArts, Design, Entertainment, Sports, and Media Occupations27-1024L4

Run any Skill with one click

name	blueprinter
description	Generate technical diagrams using HTML/CSS in Flat Engineering Blueprint style. Use when the user wants to create architecture diagrams, system diagrams, flowcharts, or technical specification sheets that look like engineering blueprints. Triggers on requests for flat diagrams, blueprint-style visualizations, or technical drawings.

Blueprinter

Generate technical diagrams using HTML/CSS following the "Flat Engineering Blueprint" style guidelines.

Core Philosophy

Precise, Objective, High Data-Ink Ratio. The output should look like a technical specification sheet or an architectural diagram, NOT a marketing landing page.

Visual Rules

1. No Decorations

NO drop shadows
NO gradients
NO glassmorphism/blur
NO rounded buttons

2. Flat & Outlined

Use 1px or 2px solid borders for structure
Use white backgrounds for content blocks

3. Monochrome Base

Element	Color
Background	Light Gray (#f8fafc)
Canvas	White (#ffffff) with Slate Border (#cbd5e1)
Text (Main)	High contrast Black (#0f172a)
Text (Sub)	Slate Gray (#64748b)
Accent	Use BLACK or ONE semantic color (e.g., Red for Error) sparingly

4. Typography

Headings/Labels: Sans-serif (Inter/Helvetica)
Data/Paths/Code: Monospace (JetBrains Mono/Consolas)

5. Layout Structure

The diagram must be contained within a diagram-canvas (a bordered box with padding)
Header: Title + Uppercase Subtitle, separated by a solid bottom border
Grid/Flexbox alignment: Everything must be strictly aligned

6. Elements

Connectors: Thin, straight or orthogonal lines. Dashed lines for abstract relationships.
Icons: Simple stroke SVG icons (no fill or complex details)
Badges: Outlined or solid black/gray blocks. Small font size.

CSS Variable Reference

:root {
  --c-bg: #f8fafc;         /* Outer Background */
  --c-canvas: #ffffff;     /* Diagram Background */
  --c-border: #cbd5e1;     /* Slate-300 */
  --c-text-main: #0f172a;  /* Slate-900 */
  --c-text-sub: #64748b;   /* Slate-500 */
  --font-ui: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

HTML Structure Template

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>[Diagram Title]</title>
  <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap" rel="stylesheet">
  <style>
    :root {
      --c-bg: #f8fafc;
      --c-canvas: #ffffff;
      --c-border: #cbd5e1;
      --c-text-main: #0f172a;
      --c-text-sub: #64748b;
      --c-accent: #dc2626;  /* Optional: for errors/warnings only */
      --font-ui: 'Inter', sans-serif;
      --font-mono: 'JetBrains Mono', monospace;
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: var(--font-ui);
      background: var(--c-bg);
      padding: 40px;
      min-height: 100vh;
    }

    .diagram-container {
      max-width: 1200px;
      margin: 0 auto;
    }

    .diagram-canvas {
      background: var(--c-canvas);
      border: 1px solid var(--c-border);
      padding: 32px;
    }

    .diagram-header {
      border-bottom: 1px solid var(--c-border);
      padding-bottom: 16px;
      margin-bottom: 24px;
    }

    .diagram-title {
      font-size: 20px;
      font-weight: 600;
      color: var(--c-text-main);
      margin-bottom: 4px;
    }

    .diagram-subtitle {
      font-size: 11px;
      font-weight: 500;
      color: var(--c-text-sub);
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }

    /* Component styles */
    .component {
      border: 1px solid var(--c-border);
      padding: 16px;
      background: var(--c-canvas);
    }

    .component-label {
      font-family: var(--font-mono);
      font-size: 12px;
      color: var(--c-text-sub);
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }

    .component-value {
      font-family: var(--font-mono);
      font-size: 14px;
      color: var(--c-text-main);
      font-weight: 500;
    }

    /* Connector lines */
    .connector {
      stroke: var(--c-border);
      stroke-width: 1;
    }

    .connector-dashed {
      stroke: var(--c-border);
      stroke-width: 1;
      stroke-dasharray: 4 4;
    }

    /* Badges */
    .badge {
      display: inline-block;
      font-family: var(--font-mono);
      font-size: 10px;
      padding: 2px 6px;
      border: 1px solid var(--c-border);
      color: var(--c-text-sub);
    }

    .badge-solid {
      background: var(--c-text-main);
      color: var(--c-canvas);
      border-color: var(--c-text-main);
    }
  </style>
</head>
<body>
  <div class="diagram-container">
    <div class="diagram-canvas">
      <div class="diagram-header">
        <div class="diagram-title">[Diagram Title]</div>
        <div class="diagram-subtitle">[Diagram Type / Version]</div>
      </div>
      <!-- Diagram content goes here -->
    </div>
  </div>
</body>
</html>

Usage Guidelines

Always use the CSS variables - never hardcode colors
Keep it flat - no shadows, no gradients, no blur effects
Use monospace for data - any technical values, paths, codes should use --font-mono
Align strictly - use CSS Grid or Flexbox with consistent gaps
Connect with lines - use SVG for connectors between components
Minimal icons - if icons are needed, use simple stroke-only SVGs

Example: Simple System Diagram

<div class="diagram-canvas">
  <div class="diagram-header">
    <div class="diagram-title">System Architecture</div>
    <div class="diagram-subtitle">v1.0 / Overview</div>
  </div>
  
  <div style="display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 24px;">
    <div class="component">
      <div class="component-label">Client</div>
      <div class="component-value">Web App</div>
    </div>
    <div class="component">
      <div class="component-label">API</div>
      <div class="component-value">REST Gateway</div>
    </div>
    <div class="component">
      <div class="component-label">Database</div>
      <div class="component-value">PostgreSQL</div>
    </div>
  </div>
</div>

name	blueprinter
description	Generate technical diagrams using HTML/CSS in Flat Engineering Blueprint style. Use when the user wants to create architecture diagrams, system diagrams, flowcharts, or technical specification sheets that look like engineering blueprints. Triggers on requests for flat diagrams, blueprint-style visualizations, or technical drawings.