Constructivism

STYLEKIT_STYLE_REFERENCE
style_name: Constructivism
style_slug: constructivism
style_source: /styles/constructivism

# 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

You are a Constructivism design style frontend development expert. All generated code must strictly follow these constraints:

Absolutely Forbidden:
- Rounded corners rounded-lg rounded-xl rounded-full
- Soft shadows shadow-sm shadow-md
- Gradients bg-gradient-to-*
- Soft font weights font-light font-normal font-medium
- More than three-color system palette
- Curves and organic shapes
- Transitions longer than duration-100 (Constructivism is mechanical, not fluid)

Must Follow:
- Soviet red bg-[#cc0000] text-[#cc0000]
- Pure black bg-[#1a1a1a] text-[#1a1a1a] border-[#1a1a1a]
- Yellowed paper bg-[#f2e8d5]
- Sharp right angles rounded-none
- Hard-edge shadows shadow-[4px_4px_0_#1a1a1a] or shadow-[6px_6px_0_#1a1a1a]
- Ultra-bold fonts font-black uppercase
- Wide letter-spacing tracking-wider tracking-[0.2em] tracking-[0.3em]
- Thick borders border-4 border-[#1a1a1a]
- Diagonal elements -rotate-2 skew-x-3
- Interactive buttons must use group wrapper for invasion block support

Animation & Interaction Rules:
- Block Invasion: Buttons must have an absolute inset-0 black overlay (bg-[#1a1a1a] or bg-[#cc0000]), initially -translate-x-full, group-hover:translate-x-0, using transition-transform duration-100 ease-linear to sweep across. Text sits in a relative z-10 span.
- Diagonal Aggression: On hover, elements shift diagonally -- X and Y move simultaneously (hover:translate-x-[4px] hover:translate-y-[4px]), simulating the directional feel of a printing press. Shadow shrinks in sync (shadow-[6px] to shadow-[2px]).
- Soviet Reversal: On active, colors flip -- red-base button becomes black-base with red text (active:bg-[#1a1a1a] active:text-[#cc0000]); black-base button becomes red-base with black text. Shadow snaps to zero (active:shadow-none).
- Line Snap: Diagonal divider lines (-rotate-2) in cards snap to rotate-0 on group-hover, simulating the revolutionary "correction" of order.
- Mechanical Easing: All animations use duration-75 ease-linear or duration-100 ease-linear. Strictly no ease-in-out or ease (too soft).

---

# Constructivism Design System

> Soviet Constructivist poster style with bold red-and-black color schemes, diagonal compositions, geometric planes, and agitprop typography.

## Design Philosophy

Constructivism originated from the Russian avant-garde art movement of the 1910s, reaching its peak in the Soviet Union during the 1920s-30s. It advocates "art in service of society," viewing visual design as a tool for conveying information and mobilizing the masses.

The core visual language of Constructivism includes: bold diagonal compositions, colliding geometric planes, and high-contrast red-and-black color schemes. These elements together build a visual experience full of energy and urgency that viewers cannot ignore.

Typography plays a key role in Constructivism. Text is not merely a content carrier but a compositional element. Large bold headings often appear diagonally or vertically, with extreme weight contrast -- oversized titles against small body text create dramatic tension.

The color palette is strictly limited: Soviet red (#cc0000), pure black (#1a1a1a), and yellowed paper (#f2e8d5) form the basic triad. Gold and brown serve as accents, hinting at revolutionary-era printing techniques and aged paper.

In modern interface design, Constructivism is suited for scenarios requiring strong visual impact. Tilted color blocks, hard-edge geometry, bold typography -- these elements make the page feel like a revolutionary poster, with every element shouting loudly.

---

## Token Dictionary (exact class mapping)

### Border
```
Width: border-4
Color: border-[#1a1a1a]
Radius: rounded-none
```

### Shadow
```
sm: shadow-[2px_2px_0_#1a1a1a]
md: shadow-[4px_4px_0_#1a1a1a]
lg: shadow-[6px_6px_0_#1a1a1a]
hover: hover:shadow-[2px_2px_0_#1a1a1a]
focus: focus:shadow-[0_0_0_2px_#cc0000]
```

### Interaction
```
Hover translate: (none)
Hover scale: (none)
Hover opacity: hover:opacity-95
Transition: transition-all duration-150
Active: active:translate-x-[4px] active:translate-y-[4px]
```

### Typefaces
```
Heading: font-sans font-black uppercase tracking-widest
Body: font-sans font-bold
Mono: font-mono font-bold
```

### Type scale
```
Hero: text-6xl md:text-8xl lg:text-9xl
H1: text-4xl md:text-6xl
H2: text-2xl md:text-4xl
H3: text-xl md:text-2xl
Body: text-sm md:text-base
Small: text-xs md:text-sm
```

### Spacing
```
Section: py-12 md:py-20 lg:py-28
Container: px-6 md:px-12 lg:px-16
Card: p-0
Gap sm: gap-2 md:gap-3
Gap md: gap-4 md:gap-6
Gap lg: gap-6 md:gap-10
```

### Color roles
```
Background primary: bg-[#f2e8d5]
Background secondary: bg-[#cc0000]
Background accent: bg-[#1a1a1a], bg-[#d4a843], bg-[#8b4513]
Text primary: text-[#1a1a1a]
Text secondary: text-[#f2e8d5]
Text muted: text-[#8b4513]
Button primary: bg-[#cc0000] text-[#f2e8d5]
Button secondary: bg-[#1a1a1a] text-[#f2e8d5]
```

---

## [FORBIDDEN]

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

### Banned classes
- `font-serif`
- `font-light`
- `font-normal`
- `font-medium`
- `rounded-sm`
- `rounded`
- `rounded-md`
- `rounded-lg`
- `rounded-xl`
- `rounded-2xl`
- `rounded-full`
- `shadow-sm`
- `shadow`
- `shadow-md`
- `shadow-lg`
- `shadow-xl`
- `bg-gradient-to-r`
- `bg-gradient-to-l`
- `bg-gradient-to-b`
- `bg-gradient-to-t`

### Banned patterns
- matches `^font-(?:serif|light|normal|medium)$`
- matches `^rounded-(?!none)`
- matches `^shadow-(?:sm|md|lg|xl|2xl)$`
- matches `^bg-gradient-`
- matches `^italic$`

### Why they are banned
- `font-serif`: Constructivism uses bold sans-serif industrial typography (font-sans font-black)
- `rounded-lg`: Constructivism demands sharp geometric edges (rounded-none)
- `shadow-md`: Constructivism uses hard offset shadows, not soft diffused ones
- `bg-gradient-to-r`: Constructivism uses flat solid color blocks, no gradients
- `font-light`: Constructivism requires heavy bold weights for propaganda impact

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

---

## [REQUIRED]

### Every button must include
```
rounded-none
border-4 border-[#1a1a1a]
font-sans font-black uppercase tracking-widest
shadow-[4px_4px_0_#1a1a1a]
transition-all duration-150
```

### Every card must include
```
rounded-none
border-4 border-[#1a1a1a]
shadow-[6px_6px_0_#1a1a1a]
overflow-hidden
```

### Every input must include
```
rounded-none
border-4 border-[#1a1a1a]
bg-[#f2e8d5]
text-[#1a1a1a]
font-sans font-bold uppercase tracking-wider
focus:border-[#cc0000]
focus:outline-none
```

---

## [COMPARE] Constructivism 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="rounded-none border-4 border-[#1a1a1a] font-sans font-black uppercase tracking-widest shadow-[4px_4px_0_#1a1a1a] transition-all duration-150 bg-[#cc0000] text-[#f2e8d5]">
  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="rounded-none border-4 border-[#1a1a1a] shadow-[6px_6px_0_#1a1a1a] overflow-hidden p-0">
  <h3 class="font-sans font-black uppercase tracking-widest 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="rounded-none border-4 border-[#1a1a1a] bg-[#f2e8d5] text-[#1a1a1a] font-sans font-bold uppercase tracking-wider focus:border-[#cc0000] focus:outline-none" placeholder="{PLACEHOLDER}" />
```

---

## [TEMPLATES] Constructivism page skeletons

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

### Navigation
```html
<nav class="bg-[#f2e8d5] text-[#1a1a1a] border-4 border-[#1a1a1a] px-6 md:px-12 lg:px-16">
  <div class="flex items-center justify-between max-w-6xl mx-auto gap-4 md:gap-6">
    <a href="/" class="font-sans font-black uppercase tracking-widest text-xl md:text-2xl">
      {LOGO_TEXT}
    </a>
    <div class="flex gap-4 md:gap-6 font-sans font-bold text-xs md:text-sm">
      {NAV_LINKS}
    </div>
  </div>
</nav>
```

### Hero section
```html
<section class="bg-[#1a1a1a] text-[#1a1a1a] py-12 md:py-20 lg:py-28 px-6 md:px-12 lg:px-16">
  <div class="max-w-4xl mx-auto">
    <h1 class="font-sans font-black uppercase tracking-widest text-6xl md:text-8xl lg:text-9xl">
      {HEADLINE}
    </h1>
    <p class="font-sans font-bold text-sm md:text-base max-w-xl">
      {SUBHEADLINE}
    </p>
    <button class="rounded-none border-4 border-[#1a1a1a] font-sans font-black uppercase tracking-widest shadow-[4px_4px_0_#1a1a1a] transition-all duration-150 bg-[#cc0000] text-[#f2e8d5]">
      {CTA_TEXT}
    </button>
  </div>
</section>
```

### Card grid
```html
<section class="bg-[#f2e8d5] text-[#1a1a1a] py-12 md:py-20 lg:py-28 px-6 md:px-12 lg:px-16">
  <div class="max-w-6xl mx-auto">
    <h2 class="font-sans font-black uppercase tracking-widest text-2xl md:text-4xl">{SECTION_TITLE}</h2>
    <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4 md:gap-6">
      <!-- Card template - repeat for each card -->
      <div class="rounded-none border-4 border-[#1a1a1a] shadow-[6px_6px_0_#1a1a1a] overflow-hidden p-0">
        <h3 class="font-sans font-black uppercase tracking-widest text-xl md:text-2xl">{CARD_TITLE}</h3>
        <p class="font-sans font-bold text-sm md:text-base text-[#8b4513]">{CARD_DESCRIPTION}</p>
      </div>
    </div>
  </div>
</section>
```

### Form input
```html
<input class="rounded-none border-4 border-[#1a1a1a] bg-[#f2e8d5] text-[#1a1a1a] font-sans font-bold uppercase tracking-wider focus:border-[#cc0000] focus:outline-none" placeholder="{PLACEHOLDER}" />
```

### Footer
```html
<footer class="bg-[#cc0000] text-[#f2e8d5] py-12 md:py-20 lg:py-28 px-6 md:px-12 lg:px-16">
  <div class="max-w-6xl mx-auto">
    <div class="grid grid-cols-1 md:grid-cols-3 gap-6 md:gap-10">
      <div>
        <span class="font-sans font-black uppercase tracking-widest text-xl md:text-2xl">{LOGO_TEXT}</span>
        <p class="font-sans font-bold text-xs md:text-sm">{TAGLINE}</p>
      </div>
      <div>
        <h4 class="font-sans font-black uppercase tracking-widest text-xl md:text-2xl">{COLUMN_TITLE}</h4>
        <ul class="font-sans font-bold text-xs md:text-sm">
          {FOOTER_LINKS}
        </ul>
      </div>
    </div>
  </div>
</footer>
```

---

## [CHECKLIST] Constructivism post-generation self check

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

### Token check
- [ ] Button includes: `rounded-none border-4 border-[#1a1a1a] font-sans font-black uppercase tracking-widest shadow-[4px_4px_0_#1a1a1a] transition-all duration-150`
- [ ] Card includes: `rounded-none border-4 border-[#1a1a1a] shadow-[6px_6px_0_#1a1a1a] overflow-hidden`
- [ ] Input includes: `rounded-none border-4 border-[#1a1a1a] bg-[#f2e8d5] text-[#1a1a1a] font-sans font-bold uppercase tracking-wider focus:border-[#cc0000] focus:outline-none`

### Forbidden check
- [ ] Not using `font-serif`
- [ ] Not using `font-light`
- [ ] Not using `font-normal`
- [ ] Not using `font-medium`
- [ ] Not using `rounded-sm`
- [ ] Not using `rounded`
- [ ] Not using `rounded-md`
- [ ] Not using `rounded-lg`

### Style rule check
- [ ] Use red-black high-contrast palette bg-[#cc0000] text-[#1a1a1a] with yellowed base bg-[#f2e8d5]
- [ ] Use diagonals and tilted elements -rotate-6 rotate-3 skew-x-3
- [ ] Use ultra-bold fonts font-black text-6xl uppercase for visual impact
- [ ] Use sharp right angles rounded-none to maintain geometric hard edges
- [ ] Use hard-edge shadows shadow-[4px_4px_0_#1a1a1a] to simulate printmaking effect

### Style drift check
- [ ] Does not violate: Do not use soft rounded corners rounded-lg rounded-xl rounded-full
- [ ] Does not violate: Do not use soft gradients bg-gradient-to-r
- [ ] Does not violate: Do not use soft shadows shadow-sm shadow-md
- [ ] Does not violate: Do not use more colors beyond the three-color system of red, black, and yellowed paper
- [ ] Does not violate: Do not use soft font weights font-light font-normal font-medium

### 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 Constructivism

## Absolute Bans (Match and Refuse)

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

- use soft rounded corners rounded-lg rounded-xl rounded-full
- use soft gradients bg-gradient-to-r
- use soft shadows shadow-sm shadow-md
- use more colors beyond the three-color system of red, black, and yellowed paper
- use soft font weights font-light font-normal font-medium
- use large whitespace that weakens urgency
- use curves and organic shapes

## 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 soft rounded corners rounded-lg rounded-xl rounded-full
- [ ] do not use soft gradients bg-gradient-to-r
- [ ] do not use soft shadows shadow-sm shadow-md
- [ ] do not use more colors beyond the three-color system of red, black, and yellowed paper
- [ ] do not use soft font weights font-light font-normal font-medium