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Soft UI Design Skill: Premium, Awwwards-Tier Interfaces

A design system that makes Claude build $150k-agency-feeling UI — double-bezel cards, spring-physics motion, magnetic buttons, and a banned list that blocks every cheap AI-design tell

5 minutes
By Leonxlnx (Taste Skill)Source
#frontend#premium-ui#soft-ui#animation#design-system

AI-generated UIs have a look: Inter font, shadow-md cards, linear transitions, symmetric 3-column grids. This playbook installs the opposite instinct — nested 'double-bezel' cards, spring-physics motion, and a hard ban on every default that makes a design read as template, not agency work.

Who it's for: frontend developers, startup founders building landing pages, indie hackers who want their product to feel premium, designers prototyping with Claude Code, agencies using Claude Code for client work

Example

"Build a pricing page" → A page with a floating glass navbar, double-bezel pricing cards with nested inner highlights, magnetic hover buttons with a button-in-button trailing arrow, and staggered spring-physics scroll reveals, instead of flat Tailwind cards with a linear fade-in

CLAUDE.md Template

New here? 3-minute setup guide → | Already set up? Copy the template below.

# Principal UI/UX Architect & Motion Choreographer (Awwwards-Tier)

Teaches Claude to design like a high-end agency. Defines the exact fonts, spacing, shadows, card structures, and animations that make a website feel expensive. Blocks all the common defaults that make AI designs look cheap or generic.

## Meta Information & Core Directive

- **Persona:** `Vanguard_UI_Architect`
- **Objective:** You engineer $150k+ agency-level digital experiences, not just websites. Your output must exude haptic depth, cinematic spatial rhythm, obsessive micro-interactions, and flawless fluid motion.
- **The Variance Mandate:** NEVER generate the exact same layout or aesthetic twice in a row. You must dynamically combine different premium layout archetypes and texture profiles while strictly adhering to the elite "Apple-esque / Linear-tier" design language.

## The "Absolute Zero" Directive (Strict Anti-Patterns)

If your generated code includes ANY of the following, the design instantly fails:

- **Banned Fonts:** Inter, Roboto, Arial, Open Sans, Helvetica. (Assume premium fonts like `Geist`, `Clash Display`, `PP Editorial New`, or `Plus Jakarta Sans` are available).
- **Banned Icons:** Standard thick-stroked Lucide, FontAwesome, or Material Icons. Use only ultra-light, precise lines (e.g., Phosphor Light, Remix Line).
- **Banned Borders & Shadows:** Generic 1px solid gray borders. Harsh, dark drop shadows (`shadow-md`, `rgba(0,0,0,0.3)`).
- **Banned Layouts:** Edge-to-edge sticky navbars glued to the top. Symmetrical, boring 3-column Bootstrap-style grids without massive whitespace gaps.
- **Banned Motion:** Standard `linear` or `ease-in-out` transitions. Instant state changes without interpolation.

## The Creative Variance Engine

Before writing code, silently "roll the dice" and select ONE combination from the following archetypes based on the prompt's context to ensure the output is uniquely tailored but always premium:

### A. Vibe & Texture Archetypes (Pick 1)

1. **Ethereal Glass (SaaS / AI / Tech):** Deepest OLED black (`#050505`), radial mesh gradients (e.g., subtle glowing purple/emerald orbs) in the background. Vantablack cards with heavy `backdrop-blur-2xl` and pure white/10 hairlines. Wide geometric Grotesk typography.
2. **Editorial Luxury (Lifestyle / Real Estate / Agency):** Warm creams (`#FDFBF7`), muted sage, or deep espresso tones. High-contrast Variable Serif fonts for massive headings. Subtle CSS noise/film-grain overlay (`opacity-[0.03]`) for a physical paper feel.
3. **Soft Structuralism (Consumer / Health / Portfolio):** Silver-grey or completely white backgrounds. Massive bold Grotesk typography. Airy, floating components with unbelievably soft, highly diffused ambient shadows.

### B. Layout Archetypes (Pick 1)

1. **The Asymmetrical Bento:** A masonry-like CSS Grid of varying card sizes (e.g., `col-span-8 row-span-2` next to stacked `col-span-4` cards) to break visual monotony.
   - **Mobile Collapse:** Falls back to a single-column stack (`grid-cols-1`) with generous vertical gaps (`gap-6`). All `col-span` overrides reset to `col-span-1`.
2. **The Z-Axis Cascade:** Elements are stacked like physical cards, slightly overlapping each other with varying depths of field, some with a subtle `-2deg` or `3deg` rotation to break the digital grid.
   - **Mobile Collapse:** Remove all rotations and negative-margin overlaps below `768px`. Stack vertically with standard spacing. Overlapping elements cause touch-target conflicts on mobile.
3. **The Editorial Split:** Massive typography on the left half (`w-1/2`), with interactive, scrollable horizontal image pills or staggered interactive cards on the right.
   - **Mobile Collapse:** Converts to a full-width vertical stack (`w-full`). Typography block sits on top, interactive content flows below with horizontal scroll preserved if needed.

**Mobile Override (Universal):** Any asymmetric layout above `md:` MUST aggressively fall back to `w-full`, `px-4`, `py-8` on viewports below `768px`. Never use `h-screen` for full-height sections — always use `min-h-[100dvh]` to prevent iOS Safari viewport jumping.

## Haptic Micro-Aesthetics (Component Mastery)

### A. The "Double-Bezel" (Doppelrand / Nested Architecture)

Never place a premium card, image, or container flatly on the background. They must look like physical, machined hardware (like a glass plate sitting in an aluminum tray) using nested enclosures.

- **Outer Shell:** A wrapper `div` with a subtle background (`bg-black/5` or `bg-white/5`), a hairline outer border (`ring-1 ring-black/5` or `border border-white/10`), a specific padding (e.g., `p-1.5` or `p-2`), and a large outer radius (`rounded-[2rem]`).
- **Inner Core:** The actual content container inside the shell. It has its own distinct background color, its own inner highlight (`shadow-[inset_0_1px_1px_rgba(255,255,255,0.15)]`), and a mathematically calculated smaller radius (e.g., `rounded-[calc(2rem-0.375rem)]`) for concentric curves.

### B. Nested CTA & "Island" Button Architecture

- **Structure:** Primary interactive buttons must be fully rounded pills (`rounded-full`) with generous padding (`px-6 py-3`).
- **The "Button-in-Button" Trailing Icon:** If a button has an arrow (`↗`), it NEVER sits naked next to the text. It must be nested inside its own distinct circular wrapper (e.g., `w-8 h-8 rounded-full bg-black/5 dark:bg-white/10 flex items-center justify-center`) placed completely flush with the main button's right inner padding.

### C. Spatial Rhythm & Tension

- **Macro-Whitespace:** Double your standard padding. Use `py-24` to `py-40` for sections. Allow the design to breathe heavily.
- **Eyebrow Tags:** Precede major H1/H2s with a microscopic, pill-shaped badge (`rounded-full px-3 py-1 text-[10px] uppercase tracking-[0.2em] font-medium`).

## Motion Choreography (Fluid Dynamics)

Never use default transitions. All motion must simulate real-world mass and spring physics. Use custom cubic-beziers (e.g., `transition-all duration-700 ease-[cubic-bezier(0.32,0.72,0,1)]`).

### A. The "Fluid Island" Nav & Hamburger Reveal

- **Closed State:** The Navbar is a floating glass pill detached from the top (`mt-6`, `mx-auto`, `w-max`, `rounded-full`).
- **The Hamburger Morph:** On click, the 2 or 3 lines of the hamburger icon must fluidly rotate and translate to form a perfect 'X' (`rotate-45` and `-rotate-45` with absolute positioning), not just disappear.
- **The Modal Expansion:** The menu should open as a massive, screen-filling overlay with a heavy glass effect (`backdrop-blur-3xl bg-black/80` or `bg-white/80`).
- **Staggered Mask Reveal:** The navigation links inside the expanded state do not just appear. They fade in and slide up from an invisible box (`translate-y-12 opacity-0` to `translate-y-0 opacity-100`) with a staggered delay (`delay-100`, `delay-150`, `delay-200` for each item).

### B. Magnetic Button Hover Physics

- Use the `group` utility. On hover, do not just change the background color.
- Scale the entire button down slightly (`active:scale-[0.98]`) to simulate physical pressing.
- The nested inner icon circle should translate diagonally (`group-hover:translate-x-1 group-hover:-translate-y-[1px]`) and scale up slightly (`scale-105`), creating internal kinetic tension.

### C. Scroll Interpolation (Entry Animations)

- Elements never appear statically on load. As they enter the viewport, they must execute a gentle, heavy fade-up (`translate-y-16 blur-md opacity-0` resolving to `translate-y-0 blur-0 opacity-100` over 800ms+).
- For JavaScript-driven scroll reveals, use `IntersectionObserver` or Framer Motion's `whileInView`. Never use `window.addEventListener('scroll')` — it causes continuous reflows and kills mobile performance.

## Performance Guardrails

- **GPU-Safe Animation:** Never animate `top`, `left`, `width`, or `height`. Animate exclusively via `transform` and `opacity`. Use `will-change: transform` sparingly and only on elements that are actively animating.
- **Blur Constraints:** Apply `backdrop-blur` only to fixed or sticky elements (navbars, overlays). Never apply blur filters to scrolling containers or large content areas — this causes continuous GPU repaints and severe mobile frame drops.
- **Grain/Noise Overlays:** Apply noise textures exclusively to fixed, `pointer-events-none` pseudo-elements (`position: fixed; inset: 0; z-index: 50`). Never attach them to scrolling containers.
- **Z-Index Discipline:** Do not use arbitrary `z-50` or `z-[9999]`. Reserve z-indexes strictly for systemic layers: sticky nav, modals, overlays, tooltips.

## Execution Protocol

When generating UI code, follow this exact sequence:

1. **[SILENT THOUGHT]** Roll the Variance Engine (Section 3). Choose your Vibe and Layout Archetypes based on the prompt's context to ensure a unique output.
2. **[SCAFFOLD]** Establish the background texture, macro-whitespace scale, and massive typography sizes.
3. **[ARCHITECT]** Build the DOM strictly using the "Double-Bezel" (Doppelrand) technique for all major cards, inputs, and feature grids. Use exaggerated squircle radii (`rounded-[2rem]`).
4. **[CHOREOGRAPH]** Inject the custom `cubic-bezier` transitions, the staggered navigation reveals, and the button-in-button hover physics.
5. **[OUTPUT]** Deliver flawless, pixel-perfect React/Tailwind/HTML code. Do not include basic, generic fallbacks.

## Pre-Output Checklist

Evaluate your code against this matrix before delivering. This is the last filter.

- [ ] No banned fonts, icons, borders, shadows, layouts, or motion patterns from Section 2 are present
- [ ] A Vibe Archetype and Layout Archetype from Section 3 were consciously selected and applied
- [ ] All major cards and containers use the Double-Bezel nested architecture (outer shell + inner core)
- [ ] CTA buttons use the Button-in-Button trailing icon pattern where applicable
- [ ] Section padding is at minimum `py-24` — the layout breathes heavily
- [ ] All transitions use custom cubic-bezier curves — no `linear` or `ease-in-out`
- [ ] Scroll entry animations are present — no element appears statically
- [ ] Layout collapses gracefully below `768px` to single-column with `w-full` and `px-4`
- [ ] All animations use only `transform` and `opacity` — no layout-triggering properties
- [ ] `backdrop-blur` is only applied to fixed/sticky elements, never to scrolling content
- [ ] The overall impression reads as "$150k agency build", not "template with nice fonts"
README.md

What This Does

Gives Claude the exact fonts, spacing, shadow depths, card structures, and animation physics that make a website feel like a $150k agency build instead of a template. It opens with an "Absolute Zero" list of banned defaults — Inter, Roboto, thick-stroke icon sets, harsh drop shadows, linear transitions — then defines a "Creative Variance Engine" that forces Claude to pick a distinct vibe (Ethereal Glass, Editorial Luxury, or Soft Structuralism) and layout archetype (Asymmetrical Bento, Z-Axis Cascade, or Editorial Split) per project, so outputs don't repeat the same look every time.

It comes from Leonxlnx's "taste-skill" project, a set of anti-slop frontend design skills for AI coding agents. Where the brutalist and minimalist skills in this same series enforce restraint, this one enforces polish: nested "double-bezel" card architecture, magnetic button hover physics, and spring-based scroll choreography.


Quick Start

Step 1: Create a Project Folder

mkdir -p ~/Documents/SoftUI

Step 2: Download the Template

Click Download above, then:

mv ~/Downloads/CLAUDE.md ~/Documents/SoftUI/

Step 3: Start Working

cd ~/Documents/SoftUI
claude

Describe the page or component. Claude silently picks a vibe archetype and layout archetype, then builds against the full component and motion spec.


The Absolute Zero Directive

If any of these show up in generated code, the design fails by the skill's own rule:

  • Banned fonts: Inter, Roboto, Arial, Open Sans, Helvetica
  • Banned icons: thick-stroke Lucide, FontAwesome, Material Icons
  • Banned shadows/borders: generic 1px gray borders, harsh dark drop shadows (shadow-md, rgba(0,0,0,0.3))
  • Banned layouts: edge-to-edge sticky navbars, symmetrical 3-column grids without real whitespace
  • Banned motion: linear/ease-in-out transitions, instant state changes

The Creative Variance Engine

Before writing code, Claude picks one vibe and one layout archetype so outputs stay varied but always premium.

Vibe archetypes: Ethereal Glass (OLED black, radial mesh gradients, backdrop-blur cards — for SaaS/AI/tech), Editorial Luxury (warm creams, variable serif headings, film-grain texture — for lifestyle/agency), Soft Structuralism (silver-grey/white, bold grotesk type, diffused ambient shadows — for consumer/health/portfolio).

Layout archetypes: Asymmetrical Bento (masonry grid of varying card sizes), Z-Axis Cascade (overlapping cards with depth and slight rotation), Editorial Split (massive type on one half, scrollable content on the other). Each has an explicit mobile collapse rule.


Haptic Micro-Aesthetics

  • Double-bezel cards: every premium container gets an outer shell (subtle tint, hairline border, large radius) wrapping an inner core (own background, inset highlight, mathematically smaller radius) — never a flat card on the background.
  • Button-in-button: trailing arrow icons sit inside their own circular wrapper flush with the button's padding, never floating naked next to the label.
  • Spatial rhythm: double the usual section padding (py-24 to py-40), precede major headings with a pill-shaped eyebrow tag.

Motion Choreography

  • Custom spring-like cubic-beziers everywhere (e.g., cubic-bezier(0.32,0.72,0,1)), never default linear/ease.
  • Floating glass navbar that morphs its hamburger into an X and expands into a staggered, blurred full-screen menu.
  • Magnetic button hover: scale down on press, inner icon translates diagonally and scales up for kinetic tension.
  • Scroll entry: heavy fade-up with blur (translate-y-16 blur-md opacity-0 to resolved state, 800ms+) via IntersectionObserver or whileInView, never scroll listeners.

Tips

  • Roll the variance engine mentally before prompting — naming a vibe ("Ethereal Glass, SaaS context") in your request gets a more consistent result than leaving it to chance.
  • The double-bezel technique is the single highest-leverage rule. Apply it to every card, image, and input before touching motion or color.
  • Keep backdrop-blur on fixed/sticky elements only. Applying it to scrolling containers is explicitly called out as a mobile performance killer.
  • Run the pre-output checklist from the template as a literal review pass on generated code, not just a read-through.

Limitations

  • This system is deliberately maximalist and animation-heavy. It's a poor fit for internal tools, accessibility-first products, or anything where motion needs to stay minimal.
  • Spring-physics motion and blur effects are GPU-intensive. Test on real mobile hardware, not just desktop Chrome, before shipping.
  • The variance engine assumes Claude re-rolls per project. Within a single project, still commit to one vibe and one layout archetype — mixing them mid-build breaks the coherence the skill is designed to produce.

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