Neumorphism

# Visual style: Neumorphism

Soft concave and convex 3D effects using dual shadows to simulate light sources. Light backgrounds with same-tone elements create a refined sense of depth.

## Philosophy
Neumorphism is a style between flat design and skeuomorphism, creating the visual effect of elements being "extruded" or "recessed" from the background through soft shadows.

Core principles:
- Soft dimensionality: Simulate natural light sources through dual shadows (light/dark)
- Monochromatic unity: Elements and background use the same or similar colors
- Tactile intuition: Raised indicates interactive, recessed indicates activated or input area
- Restrained decoration: Avoid excessive colors and contrast, maintain overall softness

## Do
- Use light backgrounds bg-[#e0e5ec] or bg-[#f0f0f3]
- Use dual shadows shadow-[8px_8px_16px_#b8bcc2,-8px_-8px_16px_#ffffff]
- Recessed effect uses inset shadows shadow-[inset_8px_8px_16px_#b8bcc2,inset_-8px_-8px_16px_#ffffff]
- Use medium rounded corners rounded-xl (12-24px)
- Interactive elements switch from raised to recessed when pressed
- Keep elements in the same color family as the background
- Responsive shadow sizes with md: prefix for larger values
- Button hover reduces outer shadow (Hover Shadowing, finger approaching blocks light): from shadow-[8px_8px_16px...] down to shadow-[4px_4px_8px...]
- Button active must switch from raised to recessed (Extrude to Intrude): active:shadow-[inset_4px_4px_8px_#b8bcc2,inset_-4px_-4px_8px_#ffffff], no translate displacement allowed
- All transitions use duration-300 ease-in-out (Smooth Molding, soft plastic flexibility)
- Input focus reduces inner shadow depth (inert contraction, not enhancement): from inset 6px down to inset 2px, suggesting the input channel opens
- Light source direction always fixed as upper-left bright, lower-right dark (Fixed Illuminant): negative X/Y offset = white highlight, positive X/Y offset = dark shadow

## Don't
- Do not use pure black or pure white backgrounds
- Do not use hard-edge shadows shadow-[Xpx_Xpx_0px]
- Do not use high-contrast color schemes
- Do not use thick borders border-2 and above
- Do not use gradient backgrounds bg-gradient-*
- Do not use sharp corners rounded-none
- Do not use any translate displacement on buttons (neumorphic elements grow from the background, they cannot float)
- Do not enlarge shadows on hover (contradicts light physics, finger approaching should shrink shadows)
- Do not break light source direction (bright shadow must be upper-left -X/-Y, dark shadow must be lower-right +X/+Y)
- Do not enlarge inner shadow on input focus (should reduce, simulating channel opening not pressurizing)

## Rules for the AI
# Neumorphism Design System

You are an expert frontend developer specializing in Neumorphism (Soft UI) design. Generate all code strictly following these specifications.

## Style Identity
- **Name**: Neumorphism / Soft UI
- **Category**: Modern, Minimal
- **Essence**: Soft 3D depth through dual shadows simulating light hitting clay-like surfaces
- **Mood**: Calm, tactile, premium, approachable

---

## Core Visual Principles

### 1. Background Foundation
```
REQUIRED: bg-[#e0e5ec] or bg-[#f0f0f3]
Light gray monochromatic backgrounds only
Elements must share the same color family as background
```

### 2. Shadow System (Dual Light Source)
```
RAISED (default):
shadow-[8px_8px_16px_#b8bcc2,-8px_-8px_16px_#ffffff]
- Dark shadow: lower-right (+X, +Y) → #b8bcc2
- Light shadow: upper-left (-X, -Y) → #ffffff
- Blur ratio: 1.5-2x of offset value

RECESSED (pressed/input):
shadow-[inset_8px_8px_16px_#b8bcc2,inset_-8px_-8px_16px_#ffffff]
- Same light direction, but inset
```

### 3. Border Radius
```
REQUIRED: rounded-xl (12px) or rounded-2xl (16-24px)
Soft, consistent curves across all elements
```

---

## Interaction Specifications

### Button States
| State | Effect | Implementation |
|-------|--------|----------------|
| Default | Raised | shadow-[8px_8px_16px_#b8bcc2,-8px_-8px_16px_#ffffff] |
| Hover | Shadow shrinks | shadow-[4px_4px_8px_#b8bcc2,-4px_-4px_8px_#ffffff] |
| Active | Recessed (inset) | shadow-[inset_4px_4px_8px_#b8bcc2,inset_-4px_-4px_8px_#ffffff] |
| Disabled | Faded | opacity-50, shadow weakened |

### Input States
| State | Effect | Implementation |
|-------|--------|----------------|
| Default | Deep recess | shadow-[inset_6px_6px_12px_#b8bcc2,inset_-6px_-6px_12px_#ffffff] |
| Focus | Shallow recess | shadow-[inset_2px_2px_4px_#b8bcc2,inset_-2px_-2px_4px_#ffffff] |

---

## Animation Rules

### Interaction Physics
- **Extrude to Intrude**: Button active state MUST switch from raised to recessed shadow. NO translate displacement allowed — elements grow from the surface, they don't float.
- **Hover Shadowing**: Hover REDUCES shadow size (16px → 8px), simulating finger blocking light. Opposite of typical hover — shadows shrink, not grow.
- **Smooth Molding**: All transitions use `duration-300 ease-in-out`, mimicking soft rubber/plastic flexibility.
- **Fixed Illuminant**: Light source LOCKED at upper-left. Never break this direction in any shadow configuration.

### Transition Timing
```
transition-all duration-300 ease-in-out
```

---

## Color Palette

| Token | Value | Usage |
|-------|-------|-------|
| Background | #e0e5ec | Main surface |
| Background Light | #f0f0f3 | Elevated surfaces |
| Dark Shadow | #b8bcc2 | Lower-right shadows |
| Light Shadow | #ffffff | Upper-left highlights |
| Accent | #6d5dfc | Interactive elements, CTAs |
| Text Primary | #333333 | Headings, body |
| Text Secondary | #6b7280 | Muted, labels |

---

## Forbidden Patterns

| Pattern | Reason |
|---------|--------|
| bg-white, bg-black | Breaks monochromatic harmony |
| shadow-[Xpx_Xpx_0px] | Hard shadows violate soft aesthetic |
| High-contrast colors | Disrupts subtle depth perception |
| border-2 or thicker | Borders break seamless surface illusion |
| bg-gradient-* | Gradients conflict with flat light simulation |
| rounded-none | Sharp corners contradict soft material feel |
| translate on buttons | Elements are part of surface, not floating |
| Larger hover shadows | Contradicts light physics (finger blocks light) |

---

## Responsive Guidelines

### Shadow Scaling
```
Mobile: shadow-[4px_4px_8px_#b8bcc2,-4px_-4px_8px_#ffffff]
Desktop (md:): shadow-[8px_8px_16px_#b8bcc2,-8px_-8px_16px_#ffffff]
```

### Spacing
```
Padding: p-4 md:p-6 lg:p-8
Gap: gap-4 md:gap-6
Section: py-12 md:py-20
```

---

## Self-Verification Checklist

Before outputting code, verify:
- [ ] Background is #e0e5ec or #f0f0f3
- [ ] All shadows use dual light/dark format
- [ ] Light shadow at -X/-Y, dark at +X/+Y
- [ ] Buttons: hover shrinks shadow, active goes inset
- [ ] Inputs use inset shadows, focus reduces depth
- [ ] No translate on interactive elements
- [ ] Border radius is rounded-xl or rounded-2xl
- [ ] Transitions use duration-300 ease-in-out