fusengine/design-webapp

Design Webapp — Dashboards, Density, States

When

After design-system tokens exist and design-method's Gate 0 has locked register product (dense, predictable, motion stays discreet). Read design-method's routing table first — if the surface is a marketing/landing page instead, use design-web.

Input

• design-system.md — OKLCH palette, typography, spacing density, the 3 dials.
• design-method/references/register/product.md — the Domain-Specificity Floor and the Product Furniture table (generic KPI ribbon, marketing triad reused in-app, cookie-cutter empty state, undifferentiated settings list, generic nav vocabulary).
• The specific page/pattern being built (dashboard, auth, settings, data table, etc.).

Steps

1. Register product ≠ marketing register. No hero, no scroll-reveal, no CTA-tricks — this register optimizes for glance-speed, not first impression. Density is a feature: Enterprise Dense / Standard spacing profile (design-system/references/spacing-density.md), MOTION_INTENSITY ≤ 4 by default (design-motion/references/motion-performance.md). The Focal-Block Floor and Signature Dominance from design-web do not apply here (register/product.md §4) — several equal-weight blocks in one viewport is correct, not a defect.

2. Pick the page pattern from references/layouts/pages/ — dashboard, auth-login, auth-register, onboarding, profile, settings, error-pages. Each is a starting structure, not a template to copy verbatim — adapt density from design-system.md, and run the Domain-Specificity Floor test on it: would this page's copy/icons/grouping look native dropped unedited into an unrelated product in the same category? If yes, it's furniture — name the product's real entities instead (register/product.md §2-3).

3. Pick the interaction pattern(s) from references/layouts/patterns/ — data-table, command-palette, modal-dialog, toast-notifications, empty-state. Apps lean on these far more than marketing sites do.

4. Cover every state explicitly — empty, loading, error, populated. Never a blank or silent default:

   • Loading — skeleton rows/cards, never spinner-only (layouts/patterns/data-table.md — NNG: skeletons perceived 9-12% faster than spinners).
   • Empty — name the actual object type and the actual first action ("No invoices yet — create one from a quote" beats "No data yet", register/product.md §3 Cookie-cutter empty state).
   • Error — actionable message + retry affordance, never a raw stack trace or generic "Something went wrong."
   • For data tables specifically, this extends to sorting/filtering/pagination states.

5. Tables (hard rules, layouts/patterns/data-table.md): first column is a readable identifier (not a raw ID/UUID), numeric columns right-aligned, header sticky on scroll, wrap content rather than truncate where legibility matters, density is a first-class mode (standard 48dp row / dense 36dp row — Material 3 baseline), mobile falls back to horizontal scroll with a sticky first column.

6. Dataviz: prefer bar/line charts over pie — preattentive processing reads magnitude/trend faster than angle/area. Color encodes data, never decorates; keep category → color mapping consistent across every chart on the same surface (layouts/pages/dashboard.md — F-pattern placement for the North Star metric still applies).

7. Forms: one column, label above the field, inline validation — reuse ../design-web/references/forms-guide.md rather than duplicating form rules here; this skill only adds the product-register defaults (single column over multi-column, no marketing-style floating labels).

8. Command palette (if present): keyboard shortcuts are optional and revealed only after the user has triggered the action manually at least once — never taught upfront as a required interaction (layouts/patterns/command-palette.md).

9. Apply the responsive shell from references/responsive-dashboard.md — sidebar behavior across breakpoints (full at desktop, icon-rail at tablet, hamburger at mobile).

10. Reuse general component guides from design-web (buttons, cards, grids, icons) rather than duplicating them — this skill only adds what's specific to apps: density, data-heavy states, and persistent navigation.

11. No inspiration browsing here — apps are function-first; skip the fuse-browser step entirely. If visual inspiration is needed for a marketing-adjacent app surface (e.g. a pricing page inside the app), route that specific page through design-web instead.

12. Generate directly as HTML/CSS (default), or optionally via Gemini Design MCP (../design-web/references/gemini/) — same brief content either way.

Failure Handling

• Gemini Design MCP (if chosen) unavailable → fall back to direct generation.
• A referenced page pattern doesn't fit the request → adapt the closest one rather than inventing an unstructured layout; note the deviation in the output report.
• A data surface has no obvious empty/error copy yet → block on that, don't ship a silent blank state; ask the owner for the real object name/action if it isn't in the brief.

Output

• HTML/CSS for the app surface, with every interaction state covered (step 4) and table/ dataviz hard rules applied (steps 5-6).
• Responsive shell verified across the size classes in responsive-dashboard.md.
• Ready for design-motion.

Next → design-motion, then design-review.

References

| File | Purpose | |------|---------| | references/responsive-dashboard.md | Sidebar + content responsive pattern | | references/layouts/pages/dashboard.md | Dashboard page structure, F-pattern KPI placement | | references/layouts/pages/auth-login.md | Login page structure | | references/layouts/pages/auth-register.md | Registration page structure | | references/layouts/pages/onboarding.md | Onboarding flow structure | | references/layouts/pages/profile.md | Profile page structure | | references/layouts/pages/settings.md | Settings page structure | | references/layouts/pages/error-pages.md | 404/500/error page structure | | references/layouts/patterns/data-table.md | Sortable/filterable table pattern, density tokens | | references/layouts/patterns/command-palette.md | Cmd-K palette pattern | | references/layouts/patterns/modal-dialog.md | Modal/dialog pattern | | references/layouts/patterns/toast-notifications.md | Toast/notification pattern | | references/layouts/patterns/empty-state.md | Empty-state pattern | | ../design-method/references/register/product.md | Domain-Specificity Floor, Product Furniture table |

Shared with design-web (load from there, don't duplicate)

| File | Purpose | |------|---------| | ../design-web/references/buttons-guide.md | Button states, sizing | | ../design-web/references/forms-guide.md | Validation, layout | | ../design-web/references/cards-guide.md | Card patterns | | ../design-web/references/grids-layout.md | Layout/grid system | | ../design-web/references/icons-guide.md | Icon usage | | ../design-web/references/gemini/ | Optional Gemini Design MCP path |