feat: add Copilot and Security accent toggles

Two Style Settings class-toggles that spot-highlight notes by topic,
following GitHub brand guidance to use vibrant colors sparingly.

- copilot-accent: callouts [!ai|copilot|gpt|llm|prompt] and matching
  tags get Copilot Purple (#8534F3)
- security-accent: callouts [!security|secret|encrypted|private|vault]
  and matching tags get Security Blue (#3094FF)

Tag highlighting works in Reading view; Live Preview doesn't expose
tag names via CSS selectors so it falls back to default styling there.

Bump to 1.3.0.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

README.md

@@ -31,6 +31,8 @@
 - GitHub **Dark Dimmed** palette variant
 - Custom task list icons (Tasks plugin syntax: `- [!]`, `- [?]`, `- [*]`, `- [/]`, `- [P]` for PRs, etc.)
 - Vim mode indicator in status bar (requires [Vimrc Support](https://github.com/esm7/obsidian-vimrc-support))
+- **Copilot accent** — spotlights AI callouts (`[!ai]`, `[!copilot]`, `[!gpt]`, `[!llm]`, `[!prompt]`) and matching tags in Copilot Purple
+- **Security accent** — spotlights sensitive callouts (`[!security]`, `[!secret]`, `[!encrypted]`, `[!private]`, `[!vault]`) and matching tags in Security Blue
 
 ## Theme Settings
 
@@ -44,6 +46,7 @@ Current settings include:
 - On/Off callout styles
 - Colorblind colorscheme variants
 - Dark Dimmed variant (applies on Dark theme)
+- Accent themes: Copilot accent, Security accent
 
 ## How to Install
 

manifest.json

@@ -1,6 +1,6 @@
 {
 	"name": "GitHub Theme",
-	"version": "1.2.0",
+	"version": "1.3.0",
 	"minAppVersion": "1.0.0",
 	"author": "@krios2146",
 	"authorUrl": "https://github.com/krios2146"

theme.css

@@ -17,6 +17,26 @@ settings:
         description: Softer dark palette based on GitHub Dark Dimmed (applies only when theme is set to Dark)
         type: class-toggle
 
+    -
+        # Accent themes
+
+        id: accent-themes
+        title: Accent themes
+        description: Spot-highlight notes by topic. Vibrant colors used sparingly, per GitHub brand guidance.
+        type: heading
+        level: 1
+        collapsed: true
+    -
+        id: copilot-accent
+        title: Copilot accent
+        description: 'Highlight AI callouts and tags with Copilot Purple. Triggers — callouts: [!ai], [!copilot], [!gpt], [!llm], [!prompt]; tags: #ai, #copilot, #gpt, #llm, #prompt (with nested variants).'
+        type: class-toggle
+    -
+        id: security-accent
+        title: Security accent
+        description: 'Highlight sensitive callouts and tags with Security Blue. Triggers — callouts: [!security], [!secret], [!encrypted], [!private], [!vault]; tags: #security, #secret, #encrypted, #private, #vault (with nested variants).'
+        type: class-toggle
+
     -
         # Colorblind
 
@@ -1699,3 +1719,58 @@ div.status-bar-item.plugin-obsidian-vimrc-support.vimrc-support-vim-mode[data-vi
 div.status-bar-item.plugin-obsidian-vimrc-support.vimrc-support-vim-mode[data-vim-mode=replace] {
     background-color: var(--color-red);
 }
+
+/* ------------------- */
+/* Accent themes — spotlight callouts and tags by topic. */
+/* Per GitHub brand guidance, vibrant colors used sparingly. */
+/* Tag highlighting works in Reading view; in Live Preview tag names */
+/* aren't exposed via CSS selectors. */
+/* ------------------- */
+
+/* Copilot accent — AI-related content (Copilot Purple #8534F3) */
+body.copilot-accent .callout[data-callout="ai"],
+body.copilot-accent .callout[data-callout="copilot"],
+body.copilot-accent .callout[data-callout="gpt"],
+body.copilot-accent .callout[data-callout="llm"],
+body.copilot-accent .callout[data-callout="prompt"] {
+    --callout-color: 133, 52, 243;
+}
+
+body.copilot-accent a.tag[href="#ai"],
+body.copilot-accent a.tag[href^="#ai/"],
+body.copilot-accent a.tag[href="#copilot"],
+body.copilot-accent a.tag[href^="#copilot/"],
+body.copilot-accent a.tag[href="#gpt"],
+body.copilot-accent a.tag[href^="#gpt/"],
+body.copilot-accent a.tag[href="#llm"],
+body.copilot-accent a.tag[href^="#llm/"],
+body.copilot-accent a.tag[href="#prompt"],
+body.copilot-accent a.tag[href^="#prompt/"] {
+    background-color: #8534F3;
+    color: #ffffff;
+    border-color: transparent;
+}
+
+/* Security accent — sensitive content (Security Blue #3094FF) */
+body.security-accent .callout[data-callout="security"],
+body.security-accent .callout[data-callout="secret"],
+body.security-accent .callout[data-callout="encrypted"],
+body.security-accent .callout[data-callout="private"],
+body.security-accent .callout[data-callout="vault"] {
+    --callout-color: 48, 148, 255;
+}
+
+body.security-accent a.tag[href="#security"],
+body.security-accent a.tag[href^="#security/"],
+body.security-accent a.tag[href="#secret"],
+body.security-accent a.tag[href^="#secret/"],
+body.security-accent a.tag[href="#encrypted"],
+body.security-accent a.tag[href^="#encrypted/"],
+body.security-accent a.tag[href="#private"],
+body.security-accent a.tag[href^="#private/"],
+body.security-accent a.tag[href="#vault"],
+body.security-accent a.tag[href^="#vault/"] {
+    background-color: #3094FF;
+    color: #ffffff;
+    border-color: transparent;
+}