Backend (Spring Boot 3.2 / Java 21 / PostgreSQL): - JWT auth with BCrypt password hashing - User profile + Mifflin-St Jeor BMR calculator - Food search + barcode via OpenFoodFacts API with local cache - Meal CRUD with user data isolation and ownership checks - AI photo analysis (OpenAI Vision) with confidence intervals - AI correction feedback loop for personalisation - Flyway DB migrations + RFC-7807 error responses Mobile (React Native / TypeScript): - Full navigation stack (Auth → Tabs → Home stack) - Design tokens (WCAG 2.2 AA colours, 8px grid, 48px touch targets) - 10 screens: Login, Register, Home, Search, Camera, AI Result, Edit Meal, Daily Details, History, Profile - Confidence-aware calorie display (kcal ± range) - Repeat last meal shortcut + macro tracking Docs: - docs/PLAN-AND-REQUIREMENTS.md - docs/traceability.csv (35 requirements, all Implemented)
429 lines
5.3 KiB
Markdown
429 lines
5.3 KiB
Markdown
Perfect — let’s turn your wireframes into a **Figma-ready design system + component spec** that you (or Marta 👀) can directly implement.
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This is structured exactly how real product teams define UI systems so you can **scale later without redesigning everything**.
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***
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# 🎨 1. Design Tokens (FOUNDATION — define this first in Figma)
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## 🟢 Colors
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Create **Color Styles** in Figma:
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```
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Primary/Green #22C55E (main action)
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Primary/Dark #16A34A
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Gray/900 #0F172A (text)
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Gray/700 #334155
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Gray/500 #64748B
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Gray/300 #CBD5F5
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Gray/100 #F1F5F9
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Background #FFFFFF
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Background/Muted #F8FAFC
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Error/Red #EF4444
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Warning/Yellow #F59E0B
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```
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***
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## 🔤 Typography
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Create text styles:
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```
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Heading/Large 24px / SemiBold / Line 32
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Heading/Medium 20px / SemiBold
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Body/Large 16px / Regular
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Body/Medium 14px / Regular
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Caption 12px / Regular
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Number/Kcal 28px / Bold
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```
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👉 Font: **Inter / SF Pro** (mobile-friendly)
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***
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## 📏 Spacing System (8px grid)
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```
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4px
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8px
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16px
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24px
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32px
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48px
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```
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***
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# 🧱 2. Core Components (Figma Components)
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***
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## 🔘 Button Component
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Create **Component: Button**
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### Variants:
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```
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Type: Primary / Secondary / Ghost
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State: Default / Pressed / Disabled
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```
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***
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### Primary Button
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```
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Height: 48px
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Padding: 0 16px
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Radius: 12px
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Fill: Green/Primary
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Text: White / 16px / Medium
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```
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***
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### Secondary Button
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```
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Border: 1px Gray/300
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Fill: White
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Text: Gray/900
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```
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***
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## 🧩 Input Field
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```
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Height: 48px
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Radius: 10px
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Border: Gray/300
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States:
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- Focus → Green border
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- Error → Red border
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```
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***
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# 🍱 3. Meal Item Component (CRITICAL)
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```
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Component: MealItemRow
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Layout:
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[ Icon ] [ Name ] [ kcal ]
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Height: 56px
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Padding: 12px
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Name: 16px / Medium
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Kcal: 14px / Gray/500
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```
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***
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### Variants:
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```
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Type:
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- Default
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- Editable
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- AI Suggested (badge)
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```
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***
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### AI Suggested Variant
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```
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Add:
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[ ⚡ Suggested ]
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Background: Light green tint
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```
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***
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# 🍽️ 4. Food Row (search results)
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```
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Component: FoodRow
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--------------------------------
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Chicken breast
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165 kcal / 100g
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--------------------------------
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```
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Height: 64px
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Padding: 12px
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***
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# 📊 5. Progress Card (Home TOP section)
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```
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Component: CalorieCard
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--------------------------------
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🔥 1800 / 2200 kcal
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Remaining: 400
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[ Progress bar ]
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--------------------------------
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```
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***
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### Progress Bar Spec
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```
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Height: 8px
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Radius: 999px
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Background: Gray/200
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Fill: Green/Primary
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```
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***
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# ➕ 6. Floating Action Button (FAB)
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```
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Component: FAB
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Size: 56x56
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Radius: 50%
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Fill: Primary Green
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Icon: + (white)
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Shadow:
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Y: 4
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Blur: 12
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```
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***
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# 📷 7. AI Suggestion Card (MOST IMPORTANT COMPONENT)
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```
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Component: AISuggestionCard
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--------------------------------
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🍚 Rice 150g
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🍗 Chicken 120g
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Confidence: 78%
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[ Edit ]
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[ Confirm ]
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--------------------------------
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```
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***
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### Layout
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* Vertical stack
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* Items = **repeatable component**
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***
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### Item inside card
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```
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Component: AISuggestionItem
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Name (left)
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Grams (right)
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Confidence (small text)
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```
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***
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# 🎛️ 8. Slider Component (Edit Screen)
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```
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Component: PortionSlider
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--------------------------------
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Rice
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150g [——●—————]
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--------------------------------
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```
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***
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### Specs:
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* Track height: 4px
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* Thumb: 16px circle
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* Active color: Green
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* Range: 0–500g
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***
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# 📱 9. Screen Layouts (Frame Specs)
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***
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## 🏠 Home Screen
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Frame: `Home`
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```
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Padding: 16px
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Vertical spacing: 16px
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Structure:
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[ Title ]
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[ CalorieCard ]
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[ Meal List (MealItemRow x N) ]
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[ Repeat Card ]
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[FAB floating bottom right]
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```
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***
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## 📷 AI Result Screen
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Frame: `AI_Result`
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```
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Padding: 16px
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[ Title ]
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[ AISuggestionCard ]
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[ Primary CTA: Confirm ]
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[ Secondary CTA: Edit ]
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```
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***
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## ✏️ Edit Meal Screen
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Frame: `Edit_Meal`
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```
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Padding: 16px
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List of:
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[ PortionSlider x items ]
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Bottom:
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[ Total calories ]
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Sticky Footer:
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[ Save Meal Button ]
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```
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***
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# 🔄 10. Component Hierarchy (IMPORTANT)
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```
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App
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├── Screens
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│ ├── Home
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│ ├── AddMeal
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│ ├── AIResult
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│ ├── EditMeal
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│
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├── Components
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│ ├── Button
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│ ├── MealItemRow
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│ ├── FoodRow
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│ ├── AISuggestionCard
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│ ├── Slider
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│ ├── ProgressBar
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│
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├── Tokens
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├── Colors
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├── Typography
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├── Spacing
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```
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***
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# 🧠 11. Interaction States (you must define in Figma)
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For each component:
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### Button
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* Default
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* Pressed (darker)
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* Disabled (opacity 40%)
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### Food Row
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* Hover (if web)
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* Selected
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### AI Suggestions
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* Pending
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* Edited
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* Confirmed
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***
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# ⚡ 12. Developer-Friendly Naming (IMPORTANT for you)
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Use naming like this in Figma:
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```
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btn/primary/default
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btn/primary/pressed
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meal-item/default
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meal-item/ai
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card/calorie
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card/ai-suggestion
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slider/portion
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fab/default
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```
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👉 This maps directly to code components later.
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***
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# 🚀 Final Result
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With this setup you get:
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✅ Scalable design system
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✅ Fast implementation (React Native ready)
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✅ Clean UX focused on speed
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***
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# 🎯 What I can do next (high value)
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I can generate:
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👉 **React Native component skeleton matching this design system**
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👉 or **real Figma JSON/import structure (so you don’t rebuild manually)**
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Just tell me 👍
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