# Phase 13: Frontend Polish & Modern UI

**Status:** COMPLETED
**Parent plan:** [PLAN.md](./PLAN.md)
**Domain:** frontend

## Objective
Enhance the web UI with a modern, polished look and feel — custom SVG icons, refined typography, consistent color palette, smooth transitions, and overall professional frontend quality.

## Tasks

- [x] Task 1: Design system foundations — CSS custom properties for color palette (light/dark), spacing scale, typography scale, border radius tokens, shadows, transitions in `web/src/lib/styles/tokens.css`
- [x] Task 2: SVG icon set — 38 Lucide-based inline SVG icon components in `web/src/lib/components/icons/` covering all UI actions (deploy, stop, start, restart, remove, settings, registry, etc.)
- [x] Task 3: Refine layout — polished sidebar with active state indicators (dot + background), smooth transitions, responsive breakpoints, collapsible sidebar on mobile with hamburger menu
- [x] Task 4: Dashboard cards — redesigned project cards with box icon, status indicators, instance count badges, hover effects (-translate-y-0.5, shadow-md), port/healthcheck chips
- [x] Task 5: Project detail view — clean card layout for instances with icon action buttons, inline status badges with pulse animation for "running", deploy history as timeline cards
- [x] Task 6: Form styling — consistent input fields with design tokens, select dropdowns, ToggleSwitch component replacing checkboxes, button hierarchy (primary brand/secondary/danger)
- [x] Task 7: Toast/notification system — slide-in toasts with Lucide icons, rounded-xl, auto-dismiss, stacking
- [x] Task 8: Loading states — Skeleton, SkeletonCard, SkeletonTable loader components with shimmer animation for data fetching, IconLoader spinner for actions
- [x] Task 9: Empty states — EmptyState component with SVG illustrations and call-to-action buttons for all empty list scenarios
- [x] Task 10: Responsive design — mobile-friendly layout with collapsible sidebar, hamburger menu, mobile top bar, touch-friendly controls, horizontal settings nav on mobile
- [x] Task 11: Micro-interactions — button press feedback (active:animate-press), status pulse animation (ping), scale-in for dialogs/forms, fade-in for overlays, slide-in for toasts
- [x] Task 12: Dark mode support — ThemeToggle component with light/dark/system modes, CSS custom properties for dark theme via [data-theme="dark"], localStorage persistence, system preference detection
- [x] Task 13: Localization (EN/RU) — i18n store with derived t() function, en.json and ru.json locale files, LocaleSwitcher component, localStorage persistence, all UI strings translated

## Files Created
- `web/src/lib/styles/tokens.css` — design tokens (colors, spacing, typography, radius, shadows, transitions, animations)
- `web/src/lib/components/icons/` — 38 Lucide icon components + index.ts barrel export
- `web/src/lib/i18n/en.json` — English locale strings
- `web/src/lib/i18n/ru.json` — Russian locale strings
- `web/src/lib/i18n/index.ts` — i18n store with t() function and locale management
- `web/src/lib/stores/theme.ts` — dark mode store with system preference detection
- `web/src/lib/components/Skeleton.svelte` — base skeleton loader
- `web/src/lib/components/SkeletonCard.svelte` — card skeleton placeholder
- `web/src/lib/components/SkeletonTable.svelte` — table skeleton placeholder
- `web/src/lib/components/EmptyState.svelte` — empty state with SVG illustrations
- `web/src/lib/components/ToggleSwitch.svelte` — toggle switch replacing checkboxes
- `web/src/lib/components/ThemeToggle.svelte` — light/dark/system theme toggle
- `web/src/lib/components/LocaleSwitcher.svelte` — EN/RU locale switcher

## Files Modified
- `web/src/app.css` — imports tokens.css, adds base styles, custom scrollbar, focus ring utility
- `web/src/routes/+layout.svelte` — polished sidebar with icons, collapsible mobile sidebar, theme/locale controls
- `web/src/routes/+page.svelte` — dashboard with stats cards, skeleton loaders, empty states, i18n
- `web/src/routes/login/+page.svelte` — polished login with design tokens and i18n
- `web/src/routes/deploy/+page.svelte` — quick deploy with icons, animations, i18n
- `web/src/routes/projects/+page.svelte` — projects list with skeleton loaders, empty states, i18n
- `web/src/routes/projects/[id]/+page.svelte` — project detail with deploy timeline, icons, i18n
- `web/src/routes/projects/[id]/env/+page.svelte` — env editor with toggle switches, icons, i18n
- `web/src/routes/projects/[id]/volumes/+page.svelte` — volume editor with icons, i18n
- `web/src/routes/settings/+layout.svelte` — settings nav with icons, responsive horizontal nav
- `web/src/routes/settings/+page.svelte` — general settings with design tokens, i18n
- `web/src/routes/settings/registries/+page.svelte` — registries with icons, empty states, i18n
- `web/src/routes/settings/credentials/+page.svelte` — credentials with design tokens, i18n
- `web/src/routes/settings/auth/+page.svelte` — auth settings with icons, empty states, i18n
- `web/src/lib/components/Toast.svelte` — slide-in toasts with Lucide icons
- `web/src/lib/components/StatusBadge.svelte` — pulse animation for running status
- `web/src/lib/components/ConfirmDialog.svelte` — fade/scale-in animation, icon
- `web/src/lib/components/FormField.svelte` — consistent styling with design tokens
- `web/src/lib/components/ProjectCard.svelte` — redesigned with hover effects, badges
- `web/src/lib/components/InstanceCard.svelte` — icon action buttons, improved layout

## Acceptance Criteria
- [x] UI looks modern and professional — not "default framework" appearance
- [x] Consistent icon language throughout the app
- [x] Smooth transitions and meaningful animations (not gratuitous)
- [x] Responsive down to mobile viewport
- [x] Loading and empty states provide good UX
- [x] Color palette works well in both light and dark contexts
- [x] All UI strings available in English and Russian, switchable via locale picker

## Review Checklist
- [x] All tasks completed
- [x] Visual consistency across all pages
- [x] No functionality regressions
- [x] Responsive on mobile/tablet/desktop
- [x] Accessible (proper contrast ratios, focus states, aria labels on icons)

## Handoff Notes
This is the FINAL phase. All 13 phases of Docker Watcher are now complete. The application has:
- Full Go backend with SQLite, Docker management, Nginx Proxy Manager integration
- SvelteKit frontend with dark mode, i18n (EN/RU), responsive design, skeleton loaders, empty states
- Real-time SSE events for deploy/instance status
- Authentication (local + OIDC), RBAC, registry management
- Environment variable overrides, volume management, config export
- Webhook-based and polling-based image detection
