Presentation Builder

Create zero-dependency, animation-rich HTML presentations that run entirely in the browser.

Based on zarazhangrui/frontend-slides, restructured for OrchestKit.

Core Philosophy

Zero Dependencies -- Single HTML files with inline CSS/JS. No npm, no build tools.
Show, Don't Tell -- Generate visual previews, not abstract choices. People discover preferences by seeing.
Distinctive Design -- Avoid generic "AI slop" aesthetics. Every presentation should feel custom-crafted.
Production Quality -- Well-commented, accessible, performant code.
Viewport Fitting -- Every slide MUST fit exactly within the viewport. No scrolling within slides, ever.

Phase 0: Detect Mode

Determine what the user wants:

Mode	Trigger	Next Phase
A: New Presentation	Create slides from scratch	Phase 1
B: PPT Conversion	Has a .ppt/.pptx file	PPT Conversion then Phase 2
C: Enhancement	Has existing HTML presentation	Read file, understand structure, enhance

Phase 1: Content Discovery

Before designing, understand the content. Use AskUserQuestion:

Question 1: Purpose

Header: "Purpose"
Options: "Pitch deck", "Teaching/Tutorial", "Conference talk", "Internal presentation"

Question 2: Slide Count

Header: "Length"
Options: "Short (5-10)", "Medium (10-20)", "Long (20+)"

Question 3: Content Readiness

Header: "Content"
Options: "I have all content ready", "I have rough notes", "I have a topic only"

If user has content, ask them to share it. If topic only, help structure an outline.

Phase 2: Style Discovery

This is the "show, don't tell" phase.

Step 2.0: Style Path Selection

Ask how the user wants to choose their style:

"Show me options" -- Generate 3 previews based on mood (recommended)
"I know what I want" -- Pick from preset list directly

Available Presets (see Style Presets for full details):

Preset	Vibe	Best For
Bold Signal	Confident, high-impact	Pitch decks, keynotes
Electric Studio	Clean, professional	Agency presentations
Creative Voltage	Energetic, retro-modern	Creative pitches
Dark Botanical	Elegant, sophisticated	Premium brands
Notebook Tabs	Editorial, organized	Reports, reviews
Pastel Geometry	Friendly, approachable	Product overviews
Split Pastel	Playful, modern	Creative agencies
Vintage Editorial	Witty, personality-driven	Personal brands
Neon Cyber	Futuristic, techy	Tech startups
Terminal Green	Developer-focused	Dev tools, APIs
Swiss Modern	Minimal, precise	Corporate, data
Paper & Ink	Literary, thoughtful	Storytelling

Step 2.1: Mood Selection (Guided Discovery)

If "Show me options", ask via AskUserQuestion:

Question: Vibe

"What feeling should the audience have?"
Options (multiSelect: true, pick up to 2):
- "Impressed/Confident" -- Professional, trustworthy
- "Excited/Energized" -- Innovative, bold
- "Calm/Focused" -- Clear, easy to follow
- "Inspired/Moved" -- Emotional, memorable

Mood-to-Style Mapping:

Mood	Suggested Styles
Impressed/Confident	Bold Signal, Electric Studio, Dark Botanical
Excited/Energized	Creative Voltage, Neon Cyber, Split Pastel
Calm/Focused	Notebook Tabs, Paper & Ink, Swiss Modern
Inspired/Moved	Dark Botanical, Vintage Editorial, Pastel Geometry

Step 2.2: Generate Style Previews

Generate 3 distinct mini HTML files in .claude-design/slide-previews/:

.claude-design/slide-previews/
├── style-a.html   # ~50-100 lines, single title slide
├── style-b.html
└── style-c.html

Each preview: self-contained, inline CSS/JS, animated title slide showing typography, colors, and motion style.

Step 2.3: Present Previews

Show user the 3 options and ask via AskUserQuestion:

"Which style preview do you prefer?"
Options: Style A, Style B, Style C, "Mix elements"

Phase 3: Generate Presentation

Generate the full presentation based on content (Phase 1) and style (Phase 2).

File Output

presentation.html    # Self-contained presentation
assets/              # Images if any (PPT conversion)

HTML Architecture

Every presentation follows this structure:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Presentation Title</title>
    <!-- Fonts from Fontshare or Google Fonts -->
    <style>
        /* Theme variables in :root */
        /* Base styles + viewport fitting (see rules/viewport-fitting.md) */
        /* Slide container styles */
        /* Animations */
        /* Responsive breakpoints */
    </style>
</head>
<body>
    <div class="progress-bar"></div>
    <nav class="nav-dots"><!-- JS generated --></nav>
    <section class="slide title-slide">...</section>
    <section class="slide">...</section>
    <!-- More slides -->
    <script>
        /* SlidePresentation class with navigation */
    </script>
</body>
</html>

Critical: Viewport Fitting

Every slide MUST fit exactly in the viewport. See Viewport Fitting Rules.

Quick checklist:

Every .slide has height: 100vh; height: 100dvh; overflow: hidden;
All font sizes use clamp(min, preferred, max)
All spacing uses clamp() or viewport units
Content respects density limits
Breakpoints exist for heights: 700px, 600px, 500px
When content doesn't fit: split into multiple slides, never scroll

Also see responsive-patterns skill for advanced clamp()/container query patterns.

Required JavaScript Features

SlidePresentation Class -- Keyboard (arrows, space), touch/swipe, mouse wheel, progress bar, nav dots
Intersection Observer -- Add .visible class on scroll for CSS animations
Optional enhancements (style-dependent): Custom cursor, particle backgrounds, parallax, 3D tilt, magnetic buttons

Code Quality

Every CSS/JS section has clear comments explaining what, why, and how to modify
Semantic HTML (<section>, <nav>, <main>)
Keyboard navigation works
ARIA labels where needed
Reduced motion support: @media (prefers-reduced-motion: reduce)

Anti-Patterns (DO NOT USE)

Fonts: Inter, Roboto, Arial, system fonts as display
Colors: #6366f1 (generic indigo), purple gradients on white
Layouts: Everything centered, generic hero sections, identical card grids
Decorations: Realistic illustrations, gratuitous glassmorphism

Phase 4: Delivery

Clean up .claude-design/slide-previews/ if it exists
Open the presentation: open [filename].html
Provide summary:

Your presentation is ready!

File: [filename].html
Style: [Style Name]
Slides: [count]

Navigation:
- Arrow keys or Space to navigate
- Scroll/swipe also works
- Click dots on the right to jump

To customize:
- Colors: :root CSS variables at top
- Fonts: Change the font link
- Animations: Modify .reveal class timings

Style Reference: Effect-to-Feeling Mapping

Feeling	Animation Style	Visual Approach
Dramatic/Cinematic	Slow fade-ins (1-1.5s), large scale transitions	Dark BG, spotlight effects, parallax
Techy/Futuristic	Neon glow, glitch/scramble text	Particle systems, grid patterns, monospace accents
Playful/Friendly	Bouncy easing, floating animations	Pastel/bright colors, rounded corners
Professional/Corporate	Subtle fast animations (200-300ms)	Clean sans-serif, navy/slate, data viz focus
Calm/Minimal	Very slow subtle motion	High whitespace, muted palette, serif typography
Editorial/Magazine	Strong typography hierarchy	Pull quotes, grid-breaking layouts, B&W + accent

Troubleshooting

Issue	Solution
Fonts not loading	Check Fontshare/Google Fonts URL, verify font names match CSS
Animations not triggering	Verify Intersection Observer is running, check `.visible` class
Scroll snap not working	Ensure `scroll-snap-type` on html, `scroll-snap-align` on slides
Mobile issues	Disable heavy effects at 768px, test touch events, reduce particles
Performance	Use `will-change` sparingly, prefer `transform`/`opacity` animations

Related Skills

ork:responsive-patterns -- Advanced clamp(), container queries, responsive breakpoints
ork:accessibility -- WCAG 2.2 compliance, keyboard navigation, ARIA patterns
ork:ui-components -- shadcn/ui and Radix component patterns
ork:demo-producer -- Terminal recording and video demos

Rules

Viewport Fitting -- Mandatory CSS for viewport-locked slides
Content Density -- Maximum content per slide type

References

Style Presets -- 12 curated visual themes with CSS variables
PPT Conversion -- PowerPoint extraction and conversion workflow

presentation-builder