design-ux

name: design-ux description: "Design and UX methodology for the Vue SSR Starter Kit: design-first thinking, visual hierarchy (size > color > weight > position), Material Design 3 alignment via Vuetify 4, 8px spacing rhythm ($spacing-unit multiples), color semantics (primary for CTAs, success/error for feedback, neutral for chrome), micro-interactions (meaningful, restrained, accessible), responsive UX (mobile-first, breakpoint semantics), and WCAG 2.1 AA accessibility. Trigger on: UI quality, design direction, visual hierarchy, accessibility audit, responsive decisions, animation design, color review, UX patterns, user feedback design. This is methodology — the design agent is the executor. Don't use for: SCSS implementation (→ design-scss), Vuetify component API (→ vuetify-components), app architecture (→ vue-ssr-architecture), auth flow (→ vue-ssr-auth), deciding when to delegate design work (→ vue-ssr-design)."

Design & UX

Contents: Philosophy · Method · Visual hierarchy · Spacing · Color · Micro-interactions · Accessibility · Responsive · References

Design-first methodology for the Vue SSR Starter Kit. Principles and decision frameworks for building interfaces that are beautiful, accessible, and consistent.

Philosophy

1. Design before code — choose the aesthetic direction, layout, and interaction model before writing a single <template> line.
2. Material Design 3 — Vuetify 4 is MD3-native. Lean into its elevation, shape, and color system rather than fighting it.
3. Restraint over excess — fewer visual elements with clear purpose beat a busy interface. Whitespace is a feature.
4. Accessibility is non-negotiable — WCAG 2.1 AA minimum. Every decision must pass the accessibility gate.
5. Motion with meaning — animations guide attention and confirm actions. Never decorative-only.

Method

When designing a new view or component:

1. Define the goal — what is the user trying to accomplish?
2. Establish hierarchy — what is the primary action? What is secondary?
3. Choose layout — grid, flex, card-based? Mobile-first.
4. Select tokens — colors, spacing, typography from the design system.
5. Add interaction — hover, focus, loading, success/error states.
6. Validate accessibility — contrast, focus order, screen reader, motion.
7. Review responsiveness — test at sm, md, lg, xl breakpoints.

Visual hierarchy

Priority system: size > color > weight > position.

• Largest element draws the eye first
• Saturated/contrasting colors pull attention next
• Bold/heavy type adds emphasis within same-size text
• Position (top-left in LTR) establishes reading flow

Use Vuetify's typography classes (text-h1 through text-body-2) consistently. Never skip heading levels.

→ See references/visual-hierarchy.md

Spacing rhythm

The project uses an 8px base unit ($spacing-unit).

All spacing must be multiples of 4px. Never use arbitrary pixel values.

Color semantics

Values reflect the live Vuetify theme in src/plugins/vuetify.js (light mode).

Rules:

• Primary color reserved for the single most important action per view
• Never use color as the sole indicator (pair with icon or text)
• Dark mode: colors shift for contrast but maintain semantic meaning

Micro-interactions

Every interactive element must provide visible feedback across these states:

• Hover — subtle transform or color shift
• Focus — visible ring (keyboard navigation)
• Active/pressed — confirmation feedback
• Loading — skeleton or progress indicator
• Disabled — muted appearance, no pointer events

Timing tokens:

• $transition-fast (150ms) — buttons, toggles, small UI
• $transition-base (300ms) — cards, modals, layout shifts
• $transition-slow (500ms) — page transitions, emphasis

→ See references/micro-interactions.md

Accessibility

WCAG 2.1 AA is the minimum bar. Key requirements:

• Color contrast ≥ 4.5:1 (normal text), ≥ 3:1 (large text/UI)
• All interactive elements reachable by keyboard
• Logical focus order matching visual layout
• prefers-reduced-motion respected — no global handler exists (the _animations.scss reset is not bundled); every animated component must add its own @media (prefers-reduced-motion: reduce) guard (➜ design-scss)
• Touch targets ≥ 44x44px on mobile
• All text (including aria-label, title, placeholder) via t() keys

→ See references/accessibility.md

Responsive UX

Mobile-first design with progressive enhancement:

Principles:

• Design for xs first, add complexity as viewport grows
• Touch interactions on mobile, hover enhancements on desktop
• Content priority: show essential content always, progressive disclosure for secondary

→ See references/responsive-ux.md

Design system tokens

The project's design tokens live in src/styles/variables.scss:

• Border radius: sm (4px), md (8px), lg (12px), xl (16px)
• Shadows: sm, md, lg, xl (soft, layered)
• Vuetify defaults: rounded lg/xl, flat variant, outlined inputs, tonal alerts

Live helpers (auto-injected mixins): flex-center, flex-col, hover-lift, transition, respond-to, visually-hidden, etc. ➜ design-scss.

The class-based helpers (.glass, .text-gradient-*, .hover-lift, .hover-scale, .skeleton, .animate-*, .delay-*, .sr-only) live in _utilities.scss / _animations.scss, which are not bundled in this project — they render nothing. Use the live mixins (e.g. the hover-lift mixin, the visually-hidden mixin) and component-local keyframes instead. ➜ design-scss.

References