Film Noir

STYLEKIT_STYLE_REFERENCE
style_name: Film Noir
style_slug: film-noir
style_source: /styles/film-noir

# Hard Prompt

## When To Use
Use this when you want AI to generate code with strict style consistency. It is the safest default for production UI.

## How To Use
- Copy the full prompt into ChatGPT, Claude, Cursor, or another coding assistant.
- Append the concrete product/page requirement after the prompt.
- After generation, check the forbidden rules and interaction states before accepting the output.

Strictly follow the style rules below and maintain consistency. No style drift allowed.

## Requirements

- Prioritize style consistency first, then creative extension.
- When conflicts arise, treat prohibitions as the highest priority.
- Self-check before output: verify colors, typography, spacing, and interactions still match this style.

## Style Rules

STYLE: Film Noir
TYPE: Dramatic high-contrast monochrome interface

MUST USE:
- Deep black background: bg-[#0a0a0a] or bg-neutral-950
- Grayscale palette: neutral-100 through neutral-950
- Serif italic headings: font-serif italic
- Extremely subtle layer separation: bg-neutral-900 vs bg-neutral-800
- Minimal crimson accent: text-[#c41e3a] / bg-[#c41e3a] (sparingly)
- Diagonal gradient light effects for drama
- Thin or no borders: border-neutral-800
- Uppercase small tracking labels: text-xs uppercase tracking-[0.2em]

MUST AVOID:
- Colorful backgrounds
- High saturation colors (crimson only as rare accent)
- Large rounded corners (rounded-2xl+)
- Cartoon/cute elements
- Glow effects (forbidden — breaks the noir darkness)
- Gradient buttons
- Emoji or playful iconography
- Buttons without active:scale-[0.98]
- focus:ring without focus:ring-offset-neutral-950
- Animation duration below 300ms (Noir is slow and dramatic, not snappy)

COLOR SYSTEM:
- Background: #0a0a0a (near black)
- Card: neutral-900
- Card border hover: neutral-600 (from neutral-800)
- Text primary: neutral-100 → white on group-hover
- Text secondary: neutral-400 → neutral-300 on group-hover
- Text muted: neutral-500
- Crimson accent: #c41e3a (very sparingly)
- Gold accent: #d4af37 (very sparingly)
- Borders: neutral-700 to neutral-800

## Animation & Interaction Rules

- Light Shaft Sweep: ALL buttons use group class. Inside, an absolute div with bg-gradient-to-r from-transparent via-white/30 to-transparent starts at -translate-x-[200%] skew-x-[-20deg] and sweeps to translate-x-[200%] on group-hover. Use transition-transform duration-700 ease-in-out. The skew creates a diagonal "flashlight beam" effect. The sweep is slow and deliberate — this is noir, not a sprint.
- Harsh Monochrome Swap: Primary button hover does hover:bg-neutral-100 hover:text-neutral-950 hover:border-neutral-100. This is a complete binary inversion (dark→light), not a gradual shade change. The abruptness reflects 40s film drama where scenes cut hard between shadow and light.
- Venetian Blinds Pattern: Cards have an absolute overlay with bg-[repeating-linear-gradient(180deg,transparent,transparent_4px,#fff_4px,#fff_6px)] at opacity-0, transitioning to group-hover:opacity-[0.06]. This is barely perceptible — like light filtering through half-closed window blinds in a detective's office.
- Crimson Bleed: Cards include a horizontal line w-12 h-[2px] bg-[#c41e3a] that expands to group-hover:w-full over duration-700 ease-out. Simulates blood spreading, or a film title card's crimson underline unfurling.
- Text Reveal: Card headings and body text brighten on group-hover (neutral-100→white, neutral-400→neutral-300) using transition-colors duration-500. Combined with venetian blinds pattern, creates the effect of light falling on text.
- Tactile Confirmation: ALL buttons must use active:scale-[0.98].
- Focus Ring Dark: Always use focus:ring-2 focus:ring-neutral-400 focus:ring-offset-2 focus:ring-offset-neutral-950.
- Slow Easing: Buttons use duration-500. Cards use duration-700. The sweeping light shaft uses duration-700 ease-in-out. NEVER use duration below 300ms — slowness is inherent to noir's dramatic weight.

## Self-Check

After generating code, verify:
1. All buttons are wrapped in group, have the light shaft sweep div inside
2. All buttons have active:scale-[0.98]
3. All focusable elements have focus:ring-offset-neutral-950
4. Cards have venetian blinds overlay (opacity-0 → group-hover:opacity-[0.06])
5. Cards have crimson bleed line (w-12 → group-hover:w-full)
6. No animation duration below 300ms
7. No rounded-2xl or larger

---

# Film Noir Design System

> A dramatic visual style drawn from classic 1940-50s film noir. Extreme light-dark contrast, deep grayscale layers, diagonal shadows, and a mysterious atmosphere, suited for story-driven products, photography portfolios, and premium brands.

## Design Philosophy

Film Noir style draws from the visual language of 1940-50s Hollywood film noir.

Core principles:
- Extreme contrast: almost no middle ground between deep black and bright white, creating dramatic tension
- Light and shadow narrative: diagonal shadows, window-blind light patterns, and spotlight effects tell stories
- Grayscale dominance: black, white, and gray as primary tones, with only minimal accent colors (crimson, gold)
- Classical typography: serif headings + sans-serif body text, echoing vintage newspaper aesthetics
- Mysterious atmosphere: information is barely visible, drawing users to explore deeper

---

## Token Dictionary (exact class mapping)

### Border
```
Width: border-b
Color: border-neutral-800
Radius: rounded-none
```

### Shadow
```
sm: shadow-sm
md: shadow-md
lg: shadow-lg
hover: shadow-lg
focus: ring-1 ring-neutral-600
```

### Interaction
```
Hover translate: (none)
Hover scale: hover:bg-neutral-800/80
Hover opacity: (none)
Transition: transition-colors duration-500
Active: active:scale-95
```

### Typefaces
```
Heading: font-serif italic
Body: font-sans
Mono: font-mono
```

### Type scale
```
Hero: text-5xl md:text-7xl lg:text-8xl
H1: text-4xl md:text-5xl
H2: text-2xl md:text-3xl
H3: text-xl md:text-2xl
Body: text-sm md:text-base
Small: text-xs
```

### Spacing
```
Section: py-20 md:py-32
Container: px-8 md:px-12
Card: p-8
Gap sm: gap-4
Gap md: gap-6
Gap lg: gap-10
```

### Color roles
```
Background primary: bg-[#0a0a0a]
Background secondary: bg-neutral-900
Background accent: bg-neutral-800, bg-[#c41e3a]
Text primary: text-neutral-100
Text secondary: text-neutral-400
Text muted: text-neutral-600
Button primary: bg-neutral-100 text-neutral-950
Button secondary: bg-transparent border border-neutral-500 text-neutral-300
```

---

## [FORBIDDEN]

These classes are banned in this style. Check for them before returning code:

### Banned classes
- `bg-blue-`
- `bg-green-`
- `bg-pink-`
- `bg-purple-`
- `bg-yellow-`
- `rounded-2xl`
- `rounded-3xl`
- `rounded-full`
- `shadow-[0_0_`
- `text-shadow`
- `bg-gradient-to-r from-pink`
- `bg-gradient-to-r from-blue`
- `animate-bounce`
- `animate-spin`

### Banned patterns
- matches `^bg-(?:blue|green|pink|purple|yellow|cyan|teal|indigo|violet|fuchsia)-`
- matches `^rounded-(?:2xl|3xl|full)`
- matches `^shadow-\[0_0_`
- matches `^animate-(?:bounce|spin|wiggle)`

### Why they are banned
- `bg-blue-`: Film Noir uses grayscale only; no colored backgrounds
- `rounded-2xl`: Film Noir uses sharp corners or minimal rounding
- `shadow-[0_0_`: No glow effects; use directional shadows for drama
- `animate-bounce`: Playful animations break the noir atmosphere

> WARNING: if your code contains any of the above, replace it before shipping.

---

## [REQUIRED]

### Every button must include
```
font-serif
italic
tracking-wide
transition-colors
```

### Every card must include
```
bg-neutral-900
relative
overflow-hidden
```

### Every input must include
```
bg-neutral-950
border-b
font-serif
focus:outline-none
```

---

## [COMPARE] Film Noir wrong vs right

The wrong examples below stand for generic library defaults that were never adapted to this style. Do not read them as visual suggestions.

### Button

[WRONG] **Wrong** (generic component library default, do not copy):
```html
<button class="{GENERIC_LIBRARY_BUTTON_DEFAULT}">
 Click me
</button>
```

[CORRECT] **Right** (uses this style's tokens):
```html
<button class="font-serif italic tracking-wide transition-colors bg-neutral-100 text-neutral-950">
 Click me
</button>
```

### Card

[WRONG] **Wrong** (generic card, not adapted to this style):
```html
<div class="{GENERIC_LIBRARY_CARD_DEFAULT}">
 <h3>{TITLE}</h3>
</div>
```

[CORRECT] **Right** (uses this style's card tokens):
```html
<div class="bg-neutral-900 relative overflow-hidden p-8">
 <h3 class="font-serif italic text-xl md:text-2xl">{TITLE}</h3>
</div>
```

### Input

[WRONG] **Wrong** (generic input, not adapted to this style):
```html
<input class="{GENERIC_LIBRARY_INPUT_DEFAULT}" />
```

[CORRECT] **Right** (uses this style's input tokens):
```html
<input class="bg-neutral-950 border-b font-serif focus:outline-none" placeholder="{PLACEHOLDER}" />
```

---

## [TEMPLATES] Film Noir page skeletons

These skeletons use this style's tokens only. Replace `{PLACEHOLDER}` values, but keep every token in place:

### Navigation
```html
<nav class="bg-[#0a0a0a] text-neutral-100 border-b border-neutral-800 px-8 md:px-12">
 <div class="flex items-center justify-between max-w-6xl mx-auto gap-6">
 <a href="/" class="font-serif italic text-xl md:text-2xl">
 {LOGO_TEXT}
 </a>
 <div class="flex gap-6 font-sans text-xs">
 {NAV_LINKS}
 </div>
 </div>
</nav>
```

### Hero section
```html
<section class="bg-neutral-800 text-neutral-100 py-20 md:py-32 px-8 md:px-12">
 <div class="max-w-4xl mx-auto">
 <h1 class="font-serif italic text-5xl md:text-7xl lg:text-8xl">
 {HEADLINE}
 </h1>
 <p class="font-sans text-sm md:text-base max-w-xl">
 {SUBHEADLINE}
 </p>
 <button class="font-serif italic tracking-wide transition-colors bg-neutral-100 text-neutral-950">
 {CTA_TEXT}
 </button>
 </div>
</section>
```

### Card grid
```html
<section class="bg-[#0a0a0a] text-neutral-100 py-20 md:py-32 px-8 md:px-12">
 <div class="max-w-6xl mx-auto">
 <h2 class="font-serif italic text-2xl md:text-3xl">{SECTION_TITLE}</h2>
 <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
 <!-- Card template - repeat for each card -->
 <div class="bg-neutral-900 relative overflow-hidden p-8">
 <h3 class="font-serif italic text-xl md:text-2xl">{CARD_TITLE}</h3>
 <p class="font-sans text-sm md:text-base text-neutral-600">{CARD_DESCRIPTION}</p>
 </div>
 </div>
 </div>
</section>
```

### Form input
```html
<input class="bg-neutral-950 border-b font-serif focus:outline-none" placeholder="{PLACEHOLDER}" />
```

### Footer
```html
<footer class="bg-neutral-900 text-neutral-400 py-20 md:py-32 px-8 md:px-12">
 <div class="max-w-6xl mx-auto">
 <div class="grid grid-cols-1 md:grid-cols-3 gap-10">
 <div>
 <span class="font-serif italic text-xl md:text-2xl">{LOGO_TEXT}</span>
 <p class="font-sans text-xs">{TAGLINE}</p>
 </div>
 <div>
 <h4 class="font-serif italic text-xl md:text-2xl">{COLUMN_TITLE}</h4>
 <ul class="font-sans text-xs">
 {FOOTER_LINKS}
 </ul>
 </div>
 </div>
 </div>
</footer>
```

---

## [CHECKLIST] Film Noir post-generation self check

**Before returning code, verify every token and rule below. Fix any violation before delivering:**

### Token check
- [ ] Button includes: `font-serif italic tracking-wide transition-colors`
- [ ] Card includes: `bg-neutral-900 relative overflow-hidden`
- [ ] Input includes: `bg-neutral-950 border-b font-serif focus:outline-none`

### Forbidden check
- [ ] Not using `bg-blue-`
- [ ] Not using `bg-green-`
- [ ] Not using `bg-pink-`
- [ ] Not using `bg-purple-`
- [ ] Not using `bg-yellow-`
- [ ] Not using `rounded-2xl`
- [ ] Not using `rounded-3xl`
- [ ] Not using `rounded-full`

### Style rule check
- [ ] Use deep black backgrounds bg-[#0a0a0a] or bg-neutral-950
- [ ] Text uses gray-white colors text-neutral-100 text-neutral-300
- [ ] Use serif fonts for headings font-serif italic
- [ ] Cards use extremely subtle gray to distinguish layers bg-neutral-900 bg-neutral-800
- [ ] Emphasis elements use crimson text-[#c41e3a] (very sparingly)

### Style drift check
- [ ] Does not violate: Do not use colorful backgrounds
- [ ] Does not violate: Do not use high-saturation colors (crimson only as accent)
- [ ] Does not violate: Do not use overly large rounded corners rounded-2xl+
- [ ] Does not violate: Do not use cartoon/cute elements
- [ ] Does not violate: Do not use glow effects

### Delivery check
- [ ] Responsive layout holds on phone, tablet and desktop with no horizontal overflow
- [ ] Every interactive element has a visible focus state, an accessible name and a reduced-motion path
- [ ] Text contrast meets WCAG AA and colour alone never carries state
- [ ] The result is still recognizable at a glance as Film Noir

---

## [EXAMPLES] Example prompts

### 1. 

```
Create a detective story portfolio using Film Noir style:
- Near-black background with subtle grey card layers
- Serif italic headings for dramatic titles
- Diagonal light shaft effects across cards
- Minimal crimson accent lines for emphasis
- Uppercase tracking labels for metadata
- Vintage newspaper-inspired typography
- Mysterious atmospheric hover effects
```

## Absolute Bans (Match and Refuse)

If any of the following patterns appear, it is a style violation — rewrite without exception.

- use colorful backgrounds
- use high-saturation colors (crimson only as accent)
- use overly large rounded corners rounded-2xl+
- use cartoon/cute elements
- use glow effects
- use gradient buttons
- omit active:scale-[0.98] from buttons (no tactile confirmation = button is decorative)
- use focus:ring without focus:ring-offset-neutral-950 (focus ring must separate from element on dark backgrounds)

## Self-Check (Verify Before Shipping)

If any item fails, the style has drifted — fix before shipping.

- [ ] No purple-to-blue gradients
- [ ] No overused fonts (Inter, Roboto, Geist, Fraunces, Plus Jakarta Sans)
- [ ] No nested cards (cards inside cards)
- [ ] No gray text on colored backgrounds
- [ ] Body text contrast meets WCAG AA (>= 4.5:1)
- [ ] No bounce or elastic easing curves
- [ ] Animations have a prefers-reduced-motion fallback
- [ ] Body text line length capped at 65-75 characters
- [ ] No side-stripe accent borders (border-left/right > 1px)
- [ ] No gradient text (background-clip: text)
- [ ] No glassmorphism used as the default surface treatment
- [ ] No tiny uppercase tracked eyebrow labels above every section heading
- [ ] do not use colorful backgrounds
- [ ] do not use high-saturation colors (crimson only as accent)
- [ ] do not use overly large rounded corners rounded-2xl+
- [ ] do not use cartoon/cute elements
- [ ] do not use glow effects