Complete 1.3: HTML Structure Refactoring - Semantic BEM implementation with ARIA accessibility

UI_UPDATE.MD

@@ -92,34 +92,34 @@ Always come back and update UI_UPDATE.MD once complete with task and task item.
 ### Sub-task 1.3: HTML Structure Refactoring
 
 #### 1.3.1: Semantic HTML Analysis
-- [ ] Review current HTML structure and identify semantic improvements
-- [ ] Map current div structure to proper semantic elements
-- [ ] Ensure proper heading hierarchy (H1->H6)
-- [ ] Validate accessibility baseline with semantic markup
+- [x] Review current HTML structure and identify semantic improvements
+- [x] Map current div structure to proper semantic elements
+- [x] Ensure proper heading hierarchy (H1->H6)
+- [x] Validate accessibility baseline with semantic markup
 
 #### 1.3.2: BEM Class Implementation
-- [ ] Apply BEM (Block-Element-Modifier) naming convention
-- [ ] Create consistent CSS class naming throughout HTML
-- [ ] Group related elements with BEM blocks
-- [ ] Implement modifier classes for component variations
+- [x] Apply BEM (Block-Element-Modifier) naming convention
+- [x] Create consistent CSS class naming throughout HTML
+- [x] Group related elements with BEM blocks
+- [x] Implement modifier classes for component variations
 
 #### 1.3.3: Component-Based Structure
-- [ ] Identify reusable HTML component patterns
-- [ ] Structure HTML for future componentization
-- [ ] Create logical component boundaries
-- [ ] Implement consistent component API patterns
+- [x] Identify reusable HTML component patterns
+- [x] Structure HTML for future componentization
+- [x] Create logical component boundaries
+- [x] Implement consistent component API patterns
 
 #### 1.3.4: Accessibility Enhancements
-- [ ] Add ARIA labels to all interactive elements
-- [ ] Implement proper role attributes for complex components
-- [ ] Ensure keyboard navigation support structure
-- [ ] Test semantic structure with screen readers
+- [x] Add ARIA labels to all interactive elements
+- [x] Implement proper role attributes for complex components
+- [x] Ensure keyboard navigation support structure
+- [x] Test semantic structure with screen readers
 
 #### 1.3.5: Event Handler Removal
-- [ ] Remove all inline onclick/onchange handlers
-- [ ] Replace with data attributes for JS targeting
-- [ ] Implement proper event delegation setup
-- [ ] Test that all interactions still function correctly
+- [x] Remove all inline onclick/onchange handlers
+- [x] Replace with data attributes for JS targeting
+- [x] Implement proper event delegation setup
+- [x] Test that all interactions still function correctly
 
 ### Sub-task 1.4: Asset Organization