feat(web): implement complete workspace with themes, tabs, sidebar, and mobile
Transform CalcText from a single-document calculator into a full workspace application with multi-document support, theming, and responsive mobile experience. - Theme system: 5 presets (Light, Dark, Matrix, Midnight, Warm) + accent colors - Document model with localStorage persistence and auto-save - Tab bar with keyboard shortcuts (Ctrl+N/W/Tab/1-9), rename, close - Sidebar with search, recent, favorites, folders, templates, drag-and-drop - 5 templates: Budget, Invoice, Unit Converter, Trip Planner, Loan Calculator - Status bar with cursor position, engine status, dedication to Igor Cassel - Results panel: type-specific colors, click-to-copy, error hints - Format toolbar: H, B, I, //, color labels with live preview toggle - Syntax highlighting using theme CSS variables - Error hover tooltips - Mobile: bottom results tray, sidebar drawer, touch targets, safe areas - Docker multi-stage build (Rust WASM + Vite + Nginx) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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# 6.1 — Mobile Experience
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**Previous Step:** ← [Theme System](../../05-theming/5.1-theme-system/5.1-theme-system.md)
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---
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## Page Metadata
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| Property | Value |
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|----------|-------|
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| **Scenario** | 06 — Mobile Experience |
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| **Page Number** | 6.1 |
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| **Platform** | Web (PWA) — mobile viewport |
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| **Page Type** | Responsive Adaptation (all app shell components) |
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| **Viewport** | < 768px |
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| **Interaction** | Touch-first |
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---
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## Overview
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**Page Purpose:** Define how the entire CalcText workspace adapts to mobile. This is NOT a separate app — it's the same app intelligently restructured for touch and small screens. Every feature remains accessible; nothing is hidden or removed.
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**Current Problem:** The existing web app hides results, toolbar, and divider on mobile — effectively removing the product's value on the most common device type.
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**Success Criteria:**
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- All features accessible on mobile (calculations, results, file management, themes)
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- Touch targets >= 44px
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- One-handed operation possible for core flow (type → see result)
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- Feels like a native mobile app when installed as PWA
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---
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## Mobile Layout (< 768px)
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```
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┌─────────────────────────────┐
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│ Header [≡] CalcText [🎨]│ 44px (touch-sized)
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├─────────────────────────────┤
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│ Tab Bar (horizontal scroll) │ 40px
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├─────────────────────────────┤
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│ │
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│ │
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│ Editor │
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│ (full width) │
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│ │
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│ │
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│ │
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├─────────────────────────────┤
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│ ═══ Results Tray │ 48px collapsed
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│ Last: $4,300 │
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├─────────────────────────────┤
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│ Status (simplified) │ 24px
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└─────────────────────────────┘
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```
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---
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## Component Adaptations
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### Header (Mobile)
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| Property | Desktop | Mobile |
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|----------|---------|--------|
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| Height | 40px | 44px (touch target) |
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| Left content | Logo + "CalcText" | [≡] hamburger + "CalcText" |
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| Right content | Theme + Settings + ⌘ | [🎨] theme only |
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| Padding | 12px 12px | 8px 12px |
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| Hamburger | N/A | 44px × 44px touch target, opens sidebar drawer |
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### Tab Bar (Mobile)
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| Property | Desktop | Mobile |
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|----------|---------|--------|
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| Height | 36px | 40px |
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| Tab min width | 100px | 80px (more compact) |
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| Close button | Visible on hover/active | Hidden — swipe left to reveal |
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| New tab (+) | After last tab | Sticky far-right |
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| Scroll | Mouse wheel | Touch swipe horizontal |
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| Active indicator | Top 2px accent border | Bottom 2px accent border (thumb reachable) |
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### Editor (Mobile)
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| Property | Desktop | Mobile |
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|----------|---------|--------|
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| Width | Flex (shared with results) | 100vw |
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| Line padding | 12px | 12px |
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| Gutter | 40px (line numbers) | 32px (compact numbers) |
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| Font size | 15px | 15px (same — readable on mobile) |
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| Line height | 24px | 24px (same) |
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| Keyboard | Physical | Virtual — editor scrolls above keyboard |
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#### Virtual Keyboard Handling
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| Property | Value |
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|----------|-------|
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| Viewport | Uses `100dvh` (dynamic viewport height) to account for keyboard |
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| Scroll | Editor auto-scrolls to keep cursor visible above keyboard |
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| Results tray | Hides when keyboard is open (not enough space) |
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| Status bar | Hides when keyboard is open |
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### Results Tray (Mobile)
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Replaces the side panel with a bottom tray.
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| State | Height | Content |
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|-------|--------|---------|
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| **Collapsed** | 48px | Drag handle + last non-empty result |
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| **Expanded** | 40vh (max 60vh) | Full scrollable results list |
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| **Hidden** | 0px | When virtual keyboard is open |
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#### Collapsed Tray
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| Property | Value |
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|----------|-------|
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| Background | var(--bg-secondary) |
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| Border top | 1px solid var(--border) |
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| Drag handle | 32px × 4px pill, var(--border), centered |
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| Content | "Last: {value}" — last non-empty result, text-xs |
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| Tap | Expand tray |
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| Swipe up | Expand tray |
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#### Expanded Tray
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| Property | Value |
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|----------|-------|
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| Content | All results paired with expressions |
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| Item format | Line number + expression snippet + result value |
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| Item height | 44px (touch-friendly) |
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| Active line | var(--accent-bg) highlight |
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| Tap result | Copy to clipboard + brief feedback |
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| Swipe down | Collapse tray |
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| Tap drag handle | Collapse |
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| Scroll | Independent vertical scroll |
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#### Tray Interaction
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```
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┌──────────────────────────────┐
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│ ═══ (drag handle) │ Swipe up to expand
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│ Last: $4,300 │
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├──────────────────────────────┤ ← expanded state below
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│ 5 salary 5,000 │
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│ 6 freelance 1,200 │
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│ 7 total_income 6,200 │ ← highlighted (active line)
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│ 9 rent 1,500 │
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│ 10 groceries 400 │
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│ 13 total_expenses 1,900 │
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│ 14 savings 4,300 │
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└──────────────────────────────┘
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```
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### Sidebar Drawer (Mobile)
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| Property | Value |
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|----------|-------|
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| Trigger | Hamburger [≡] in header |
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| Width | 85vw, max 320px |
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| Position | Fixed left, full height |
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| Background | var(--bg) |
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| Backdrop | rgba(0, 0, 0, 0.5) — tap to close |
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| Animation | translateX(-100%) → translateX(0), 200ms ease-out |
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| Close | Tap backdrop, swipe left, × button (top-right, 44px target) |
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| Content | Same sections as desktop sidebar (search, recent, favorites, files, templates) |
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| File tap | Opens document → auto-closes drawer |
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| Search | Full width, 44px height (touch target) |
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| File items | 44px height (touch target, up from 28px desktop) |
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### Theme Picker (Mobile)
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| Property | Value |
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|----------|-------|
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| Trigger | [🎨] button in header |
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| Style | Bottom sheet (slides from bottom) |
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| Height | Auto (content-driven), max 60vh |
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| Border radius | 12px 12px 0 0 |
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| Drag handle | 32px × 4px pill, centered |
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| Items | 48px height per theme (touch targets) |
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| Accent swatches | 32px circles, 8px gap (larger for touch) |
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| Close | Swipe down, tap backdrop |
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### Status Bar (Mobile)
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| Property | Value |
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|----------|-------|
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| Height | 24px (same) |
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| Content | Cursor position + engine status dot only |
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| Hidden items | Line count, theme indicator (accessible elsewhere) |
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| Hidden | When virtual keyboard is open |
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---
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## Touch Gestures
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| Gesture | Context | Action |
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|---------|---------|--------|
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| Swipe left on tab | Tab bar | Reveal close button |
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| Swipe up on results tray | Results | Expand tray |
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| Swipe down on results tray | Results | Collapse tray |
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| Swipe left from right edge | Sidebar drawer | Close drawer |
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| Swipe down on bottom sheet | Theme picker | Close sheet |
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| Long press on file | Sidebar | Show context menu |
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| Long press on tab | Tab bar | Drag to reorder |
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| Tap result | Results tray | Copy to clipboard |
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| Pinch | Editor | Zoom font size (optional) |
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---
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## Breakpoint Details
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| Width | Classification | Key Adaptations |
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|-------|---------------|-----------------|
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| **>= 1024px** | Desktop | Full 3-panel layout |
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| **768–1023px** | Tablet | Sidebar → overlay drawer. Editor + results side-by-side. |
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| **480–767px** | Mobile | Single column. Results tray. Sidebar drawer. Touch targets 44px. |
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| **< 480px** | Small mobile | Same as mobile. Tab labels may truncate. Logo text hidden. |
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### Tablet Specifics (768–1023px)
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| Component | Behavior |
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|-----------|----------|
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| Sidebar | Overlay drawer (hamburger toggle) instead of persistent panel |
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| Editor + Results | Side-by-side with divider (same as desktop) |
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| Tab bar | Same as desktop (enough width) |
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| Header | Show hamburger [≡] instead of persistent sidebar |
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| Theme picker | Dropdown (same as desktop) |
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---
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## PWA Mobile Enhancements
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| Feature | Implementation |
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|---------|---------------|
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| Standalone display | `display: standalone` — no browser chrome |
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| Status bar color | `theme-color` meta tag updates per theme |
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| Safe areas | `env(safe-area-inset-*)` for notched devices |
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| Splash screen | Theme-colored background + CalcText logo |
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| Home screen icon | App icon with accent color ring |
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| Orientation | Portrait preferred, landscape supported |
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### Safe Area Padding
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```css
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.calcpad-app {
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padding-top: env(safe-area-inset-top);
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padding-bottom: env(safe-area-inset-bottom);
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padding-left: env(safe-area-inset-left);
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padding-right: env(safe-area-inset-right);
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}
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```
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---
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## Page States (Mobile-Specific)
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| State | When | Behavior |
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|-------|------|----------|
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| **Keyboard open** | User tapped editor | Results tray + status bar hide. Editor fills available space. |
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| **Keyboard closed** | User tapped outside or pressed Done | Results tray + status bar reappear. |
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| **Drawer open** | Hamburger tapped | Sidebar overlays. Backdrop captures tap to close. |
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| **Tray expanded** | User swiped up | 40vh results list. Editor partially visible above. |
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| **Offline** | No network | Status bar shows offline indicator. All features work. |
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---
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## Technical Notes
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- **Viewport units:** Use `dvh` (dynamic viewport height) not `vh` to handle mobile browser chrome and virtual keyboard.
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- **Touch events:** Use `touchstart`/`touchmove`/`touchend` for swipe gestures. Consider `passive: true` for scroll performance.
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- **Overscroll:** Disable `overscroll-behavior: none` on app container to prevent pull-to-refresh interference.
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- **iOS safe areas:** Test with iPhone notch and dynamic island. Apply `env(safe-area-inset-*)`.
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- **Android back button:** In PWA mode, back button should close drawers/sheets before navigating back.
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- **Font scaling:** Respect system font size on mobile. Use relative units where possible.
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- **Cross-platform:** Mobile web layout does NOT need to port to native mobile (that's a separate app). But interaction patterns (swipe, long-press) inform native mobile design if built later.
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---
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_Created using Whiteport Design Studio (WDS) methodology_
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