Implement light minimalistic tech redesign with Material 3
Complete transformation from dark to light theme with a professional, tech-forward design system featuring: - Material 3 theming with cyan-based color palette (#0891B2 primary) - Inter font family integration via Google Fonts - Comprehensive theme system (colors, spacing, typography, shadows) - Responsive component redesign across all screens - Enhanced UX with hover animations, Hero transitions, and shimmer loading - Accessibility features (reduced motion support, high contrast) - Clean architecture with zero hardcoded values Theme System: - Created app_colors.dart with semantic color constants - Created app_spacing.dart with 8px base spacing scale - Created app_theme.dart with complete Material 3 configuration - Added shimmer_loading.dart for image loading states UI Components Updated: - Book cards with hover effects and Hero animations - Bottom navigation with refined styling - All screens migrated to theme-based colors and typography - Forms and inputs using consistent design system Documentation: - Added REDESIGN_SUMMARY.md with complete implementation overview - Added IMPLEMENTATION_CHECKLIST.md with detailed task completion status All components now use centralized theme with no hardcoded values, ensuring consistency and easy future customization. Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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books_flutter/design-system/bookshelf-app/MASTER.md
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# Design System Master File
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> **LOGIC:** When building a specific page, first check `design-system/pages/[page-name].md`.
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> If that file exists, its rules **override** this Master file.
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> If not, strictly follow the rules below.
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---
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**Project:** Bookshelf App
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**Generated:** 2026-02-07 13:01:29
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**Category:** Design System/Component Library
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---
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## Global Rules
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### Color Palette
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| Role | Hex | CSS Variable |
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|------|-----|--------------|
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| Primary | `#0891B2` | `--color-primary` |
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| Secondary | `#22D3EE` | `--color-secondary` |
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| CTA/Accent | `#22C55E` | `--color-cta` |
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| Background | `#ECFEFF` | `--color-background` |
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| Text | `#164E63` | `--color-text` |
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**Color Notes:** Fresh cyan + clean green
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### Typography
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- **Heading Font:** Inter
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- **Body Font:** Inter
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- **Mood:** minimal, clean, swiss, functional, neutral, professional
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- **Google Fonts:** [Inter + Inter](https://fonts.google.com/share?selection.family=Inter:wght@300;400;500;600;700)
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**CSS Import:**
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```css
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@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');
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```
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### Spacing Variables
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| Token | Value | Usage |
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|-------|-------|-------|
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| `--space-xs` | `4px` / `0.25rem` | Tight gaps |
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| `--space-sm` | `8px` / `0.5rem` | Icon gaps, inline spacing |
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| `--space-md` | `16px` / `1rem` | Standard padding |
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| `--space-lg` | `24px` / `1.5rem` | Section padding |
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| `--space-xl` | `32px` / `2rem` | Large gaps |
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| `--space-2xl` | `48px` / `3rem` | Section margins |
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| `--space-3xl` | `64px` / `4rem` | Hero padding |
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### Shadow Depths
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| Level | Value | Usage |
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|-------|-------|-------|
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| `--shadow-sm` | `0 1px 2px rgba(0,0,0,0.05)` | Subtle lift |
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| `--shadow-md` | `0 4px 6px rgba(0,0,0,0.1)` | Cards, buttons |
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| `--shadow-lg` | `0 10px 15px rgba(0,0,0,0.1)` | Modals, dropdowns |
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| `--shadow-xl` | `0 20px 25px rgba(0,0,0,0.15)` | Hero images, featured cards |
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---
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## Component Specs
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### Buttons
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```css
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/* Primary Button */
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.btn-primary {
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background: #22C55E;
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color: white;
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padding: 12px 24px;
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border-radius: 8px;
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font-weight: 600;
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transition: all 200ms ease;
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cursor: pointer;
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}
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.btn-primary:hover {
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opacity: 0.9;
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transform: translateY(-1px);
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}
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/* Secondary Button */
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.btn-secondary {
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background: transparent;
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color: #0891B2;
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border: 2px solid #0891B2;
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padding: 12px 24px;
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border-radius: 8px;
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font-weight: 600;
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transition: all 200ms ease;
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cursor: pointer;
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}
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```
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### Cards
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```css
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.card {
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background: #ECFEFF;
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border-radius: 12px;
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padding: 24px;
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box-shadow: var(--shadow-md);
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transition: all 200ms ease;
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cursor: pointer;
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}
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.card:hover {
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box-shadow: var(--shadow-lg);
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transform: translateY(-2px);
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}
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```
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### Inputs
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```css
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.input {
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padding: 12px 16px;
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border: 1px solid #E2E8F0;
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border-radius: 8px;
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font-size: 16px;
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transition: border-color 200ms ease;
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}
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.input:focus {
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border-color: #0891B2;
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outline: none;
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box-shadow: 0 0 0 3px #0891B220;
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}
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```
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### Modals
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```css
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.modal-overlay {
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background: rgba(0, 0, 0, 0.5);
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backdrop-filter: blur(4px);
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}
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.modal {
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background: white;
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border-radius: 16px;
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padding: 32px;
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box-shadow: var(--shadow-xl);
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max-width: 500px;
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width: 90%;
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}
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```
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---
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## Style Guidelines
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**Style:** Exaggerated Minimalism
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**Keywords:** Bold minimalism, oversized typography, high contrast, negative space, loud minimal, statement design
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**Best For:** Fashion, architecture, portfolios, agency landing pages, luxury brands, editorial
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**Key Effects:** font-size: clamp(3rem 10vw 12rem), font-weight: 900, letter-spacing: -0.05em, massive whitespace
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### Page Pattern
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**Pattern Name:** Minimal Single Column
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- **Conversion Strategy:** Single CTA focus. Large typography. Lots of whitespace. No nav clutter. Mobile-first.
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- **CTA Placement:** Center, large CTA button
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- **Section Order:** 1. Hero headline, 2. Short description, 3. Benefit bullets (3 max), 4. CTA, 5. Footer
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---
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## Anti-Patterns (Do NOT Use)
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- ❌ Poor documentation
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- ❌ No live preview
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### Additional Forbidden Patterns
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- ❌ **Emojis as icons** — Use SVG icons (Heroicons, Lucide, Simple Icons)
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- ❌ **Missing cursor:pointer** — All clickable elements must have cursor:pointer
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- ❌ **Layout-shifting hovers** — Avoid scale transforms that shift layout
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- ❌ **Low contrast text** — Maintain 4.5:1 minimum contrast ratio
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- ❌ **Instant state changes** — Always use transitions (150-300ms)
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- ❌ **Invisible focus states** — Focus states must be visible for a11y
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---
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## Pre-Delivery Checklist
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Before delivering any UI code, verify:
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- [ ] No emojis used as icons (use SVG instead)
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- [ ] All icons from consistent icon set (Heroicons/Lucide)
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- [ ] `cursor-pointer` on all clickable elements
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- [ ] Hover states with smooth transitions (150-300ms)
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- [ ] Light mode: text contrast 4.5:1 minimum
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- [ ] Focus states visible for keyboard navigation
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- [ ] `prefers-reduced-motion` respected
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- [ ] Responsive: 375px, 768px, 1024px, 1440px
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- [ ] No content hidden behind fixed navbars
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- [ ] No horizontal scroll on mobile
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