---
epic: 14
story: 14.2
title: "High Contrast Mode"
status: draft
---

## Epic 14 — Accessibility & Internationalization
**Goal:** Make CalcPad usable by everyone regardless of ability, language, or locale.

### Story 14.2: High Contrast Mode

As a user with low vision,
I want a high-contrast theme that respects my system accessibility settings,
So that I can clearly distinguish all UI elements without straining.

**Acceptance Criteria:**

**Given** a dedicated high-contrast theme exists in CalcPad
**When** the user selects it from Settings > Appearance
**Then** all text meets WCAG AAA contrast ratios (minimum 7:1 for normal text, 4.5:1 for large text)
**And** the input area, result column, errors, and UI chrome are all clearly distinguishable

**Given** the user has enabled high-contrast mode in their operating system (macOS, Windows, or browser)
**When** CalcPad is launched or the system setting changes while CalcPad is running
**Then** CalcPad automatically switches to its high-contrast theme
**And** the user can override the automatic selection in CalcPad settings if preferred

**Given** the high-contrast theme is active
**When** the user views error highlights, selection highlights, and syntax differentiation
**Then** colors are not the sole means of conveying information -- patterns, borders, or text labels supplement color
**And** focus indicators are bold and clearly visible (minimum 3px solid border)