diff --git a/README.md b/README.md
index 6040765..2622739 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ Built for everyone. Owned by no one. Free as in freedom.
 
 <br>
 
-<img src="https://img.shields.io/badge/version-1.0.0-6B8AFF?style=flat-square&labelColor=282C33" alt="Version">
+<img src="https://img.shields.io/badge/version-1.1.0-6B8AFF?style=flat-square&labelColor=282C33" alt="Version">
 <img src="https://img.shields.io/badge/platform-Windows-6B8AFF?style=flat-square&labelColor=282C33" alt="Platform">
 <img src="https://img.shields.io/badge/Tauri-v2-6B8AFF?style=flat-square&labelColor=282C33" alt="Tauri">
 <img src="https://img.shields.io/badge/license-CC0_Public_Domain-6B8AFF?style=flat-square&labelColor=282C33" alt="License">
@@ -19,7 +19,7 @@ Built for everyone. Owned by no one. Free as in freedom.
 
 ## 📖 Overview
 
-Vesper renders your markdown with carefully tuned typography and a refined dark interface, giving you the ultimate reading experience. No installation, no AppData, no registry, no telemetry, no accounts, no subscriptions - just drop the exe and go.
+Vesper renders your markdown with carefully tuned typography and a refined interface, giving you the ultimate reading experience. Choose between dark and light themes, navigate entirely by keyboard, and enjoy full WCAG 2.2 AAA accessibility. No installation, no AppData, no registry, no telemetry, no accounts, no subscriptions - just drop the exe and go.
 
 Knowledge should be accessible to all. Vesper exists to make reading a pleasure, not a product.
 
@@ -42,7 +42,7 @@ Full CommonMark support via **markdown-it** with extensions:
 | 📄 HTML | Inline HTML passthrough |
 | ↵ Breaks | Newlines preserved as line breaks |
 
-**Premium dark-mode typography** tuned for long-form reading:
+**Premium typography** tuned for long-form reading:
 
 > - **Inter Variable** at 17px with 1.7 line-height
 > - ~65 character measure for optimal readability
@@ -80,9 +80,10 @@ Full CommonMark support via **markdown-it** with extensions:
 
 | Feature | Details |
 |:--|:--|
+| 🌗 Dark / Light Theme | Toggle in View menu, persisted across sessions |
 | 🖥️ Focus Mode | `F11` hides title bar and menu for immersive reading |
-| 🔎 Content Zoom | `Ctrl+Scroll` - 50% to 200% |
-| ↔️ Content Width | `Shift+Scroll` - 400px to 1200px |
+| 🔎 Content Zoom | `Ctrl+Scroll` or View menu spinner - 50% to 200% |
+| ↔️ Content Width | `Shift+Scroll` or View menu spinner - 400px to 1200px |
 | 🔲 UI Scale | 50%-200% via View menu spinner, persisted across sessions |
 | 🏀 Kinetic Scroll | Right-mouse drag with iOS-style rubber band overscroll |
 | 📜 Custom Scrollbars | Thin, auto-hiding, accent-colored on hover |
@@ -92,8 +93,9 @@ Full CommonMark support via **markdown-it** with extensions:
 
 ### 📂 File Handling
 
-- Open via **File menu**, **`Ctrl+O`**, or **drag-and-drop** from Explorer
+- Open via **File menu**, **`Ctrl+O`**, **drag-and-drop**, or **double-click** from Explorer
 - Supports `.md` · `.markdown` · `.txt`
+- **Single instance** - opening a file when Vesper is already running forwards it to the existing window
 - Native Tauri drag-and-drop integration with real file system paths
 
 <br>
@@ -109,6 +111,26 @@ Full CommonMark support via **markdown-it** with extensions:
 
 <br>
 
+## ♿ Accessibility
+
+Vesper targets **WCAG 2.2 AAA** compliance across the entire interface.
+
+| Area | Details |
+|:--|:--|
+| 🏗️ Semantic HTML | `<header>`, `<nav>`, `<main>`, `<article>`, `<search>` landmarks; proper ARIA roles for menus, tabs, dialogs, and status regions |
+| ⌨️ Full Keyboard Navigation | Menu bar, tab bar, sidebar TOC, modals, and context menu all navigable with arrow keys, Home/End, Enter, Escape |
+| 🔗 Skip Link | "Skip to content" link as first focusable element for screen reader users |
+| 🎯 Focus Management | Visible `:focus-visible` outlines on all interactive elements; focus traps in modals with restore on close |
+| 🌗 High Contrast Themes | Dark and light themes both meet AAA contrast ratios (7:1+ for normal text) |
+| 🎞️ Reduced Motion | Respects `prefers-reduced-motion` OS setting — all animations disabled when active |
+| 📋 Active Heading Tracking | Current section highlighted in sidebar TOC via IntersectionObserver |
+| 🔲 Target Sizes | All interactive targets meet 24x24px minimum (WCAG 2.5.8) |
+| 📢 Status Messages | Search results counter uses `aria-live="polite"` for screen reader announcements |
+| 🎨 Non-Color Indicators | Active tabs marked with a bottom border accent; search highlights include underline in addition to background |
+| ↔️ Resizable Sidebar | Keyboard-accessible resize handle (`role="separator"`) with arrow key support |
+
+<br>
+
 ## ⌨️ Keyboard Shortcuts
 
 | Shortcut | Action |
@@ -119,7 +141,9 @@ Full CommonMark support via **markdown-it** with extensions:
 | `Ctrl+F` | 🔍 Toggle search |
 | `Ctrl+Shift+S` | 📋 Toggle sidebar |
 | `F11` | 🖥️ Toggle focus mode |
-| `Escape` | ← Close search / sidebar |
+| `Escape` | ← Close search / sidebar / context menu |
+| `Shift+F10` | 📋 Open context menu |
+| `Delete` | ✕ Close focused tab (when tab bar is focused) |
 | `Ctrl+Scroll` | 🔎 Zoom content in / out |
 | `Shift+Scroll` | ↔️ Adjust content width |
 
@@ -134,7 +158,7 @@ Full CommonMark support via **markdown-it** with extensions:
 
 ### Download
 
-Download the latest **`vesper.exe`** from the [Releases](https://github.com/yourusername/vesper/releases) page.
+Download the latest **`vesper.exe`** from the [Releases](https://git.lashman.live/lashman/vesper/releases) page.
 No installation required - Vesper is fully portable. No gatekeepers between you and your documents.
 
 ### Build from Source
@@ -144,7 +168,7 @@ Everyone has the right to inspect, modify, and rebuild the tools they use.
 > **Requires:** [Node.js](https://nodejs.org/) v18+ · [Rust](https://www.rust-lang.org/tools/install) stable · [Tauri v2 prerequisites](https://v2.tauri.app/start/prerequisites/)
 
 ```bash
-git clone https://github.com/yourusername/vesper.git
+git clone https://git.lashman.live/lashman/vesper.git
 cd vesper
 npm install
 ```
@@ -176,7 +200,7 @@ Built entirely on open-source foundations - no proprietary dependencies, no vend
 | 🖼️ | Icons | [Lucide React](https://lucide.dev/) |
 | 📜 | Scrollbars | [OverlayScrollbars](https://kingsora.github.io/OverlayScrollbars/) |
 
-**Tauri Plugins:** `dialog` · `fs` · `opener`
+**Tauri Plugins:** `dialog` · `fs` · `opener` · `single-instance`
 
 <br>
 
@@ -204,8 +228,8 @@ data/
 |:--|:--|
 | 📖 | **Content First** - all UI chrome can be hidden; the reader is the focus |
 | 🔤 | **Typography Matters** - Inter at 17px, 1.7 line-height, ~65 char measure |
-| 🌙 | **Dark by Default** - deep onyx base `#282C33` reduces eye strain |
-| ⌨️ | **Keyboard Driven** - every feature accessible via shortcuts |
+| 🌗 | **Dark & Light** - two high-contrast themes, both WCAG AAA compliant |
+| ⌨️ | **Keyboard Driven** - every feature accessible via shortcuts and arrow keys |
 | ✨ | **Minimalist Chrome** - the interface gets out of your way |
 | 🤝 | **No Extraction** - no ads, no tracking, no data harvesting, no paywalls |
 
diff --git a/package.json b/package.json
index 682a7af..99300d0 100644
--- a/package.json
+++ b/package.json
@@ -1 +1 @@
-{"name":"vesper","private":true,"version":"1.0.1","type":"module","scripts":{"dev":"vite","build":"tsc && vite build","preview":"vite preview","tauri":"tauri"},"dependencies":{"@fontsource-variable/inter":"^5.2.8","@fontsource-variable/jetbrains-mono":"^5.2.8","@tailwindcss/typography":"^0.5.19","@tailwindcss/vite":"^4.1.18","@tauri-apps/api":"^2","@tauri-apps/plugin-dialog":"^2.6.0","@tauri-apps/plugin-fs":"^2.4.5","@tauri-apps/plugin-opener":"^2","daisyui":"^5.5.18","framer-motion":"^12.34.0","highlight.js":"^11.11.1","lucide-react":"^0.564.0","markdown-it":"^14.1.1","markdown-it-mark":"^4.0.0","markdown-it-sub":"^2.0.0","markdown-it-sup":"^2.0.0","markdown-it-task-lists":"^2.1.1","overlayscrollbars":"^2.14.0","overlayscrollbars-react":"^0.5.6","react":"^19.1.0","react-dom":"^19.1.0","tailwindcss":"^4.1.18"},"devDependencies":{"@tauri-apps/cli":"^2","@types/markdown-it":"^14.1.2","@types/react":"^19.1.8","@types/react-dom":"^19.1.6","@vitejs/plugin-react":"^4.6.0","png-to-ico":"^3.0.1","puppeteer-core":"^24.37.3","sharp":"^0.34.5","typescript":"~5.8.3","vite":"^7.0.4"}}
\ No newline at end of file
+{"name":"vesper","private":true,"version":"1.1.0","type":"module","scripts":{"dev":"vite","build":"tsc && vite build","preview":"vite preview","tauri":"tauri"},"dependencies":{"@fontsource-variable/inter":"^5.2.8","@fontsource-variable/jetbrains-mono":"^5.2.8","@tailwindcss/typography":"^0.5.19","@tailwindcss/vite":"^4.1.18","@tauri-apps/api":"^2","@tauri-apps/plugin-dialog":"^2.6.0","@tauri-apps/plugin-fs":"^2.4.5","@tauri-apps/plugin-opener":"^2","daisyui":"^5.5.18","framer-motion":"^12.34.0","highlight.js":"^11.11.1","lucide-react":"^0.564.0","markdown-it":"^14.1.1","markdown-it-mark":"^4.0.0","markdown-it-sub":"^2.0.0","markdown-it-sup":"^2.0.0","markdown-it-task-lists":"^2.1.1","overlayscrollbars":"^2.14.0","overlayscrollbars-react":"^0.5.6","react":"^19.1.0","react-dom":"^19.1.0","tailwindcss":"^4.1.18"},"devDependencies":{"@tauri-apps/cli":"^2","@types/markdown-it":"^14.1.2","@types/react":"^19.1.8","@types/react-dom":"^19.1.6","@vitejs/plugin-react":"^4.6.0","png-to-ico":"^3.0.1","puppeteer-core":"^24.37.3","sharp":"^0.34.5","typescript":"~5.8.3","vite":"^7.0.4"}}
\ No newline at end of file
diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index 1a4b42c..2e0a390 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "vesper"
-version = "1.0.1"
+version = "1.1.0"
 description = "A beautiful markdown reader"
 authors = ["you"]
 edition = "2021"
diff --git a/src-tauri/tauri.conf.json b/src-tauri/tauri.conf.json
index 05c5b2f..40a563b 100644
--- a/src-tauri/tauri.conf.json
+++ b/src-tauri/tauri.conf.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://schema.tauri.app/config/2",
   "productName": "Vesper",
-  "version": "1.0.1",
+  "version": "1.1.0",
   "identifier": "com.vesper.reader",
   "build": {
     "beforeDevCommand": "npm run dev",