Updated UI_UPDATE.MD to reflect completion of multiple Phase 2 tasks: 2.1.3-2.1.5 and 2.2.2-2.2.5

UI_UPDATE.MD

@@ -167,49 +167,49 @@ Always come back and update UI_UPDATE.MD once complete with task and task item.
 - [x] Set up dark/light mode foundations
 
 #### 2.1.3: Gradient Implementation
-- [ ] Create subtle gradient backgrounds for headers
-- [ ] Implement button gradient styles
-- [ ] Add background gradients for visual interest
-- [ ] Ensure gradients meet accessibility requirements
+- [x] Create subtle gradient backgrounds for headers
+- [x] Implement button gradient styles
+- [x] Add background gradients for visual interest
+- [x] Ensure gradients meet accessibility requirements
 
 #### 2.1.4: Color Token System
-- [ ] Establish consistent color usage patterns
-- [ ] Create color utility classes
-- [ ] Implement dynamic theming capabilities
-- [ ] Test cross-browser color rendering
+- [x] Establish consistent color usage patterns
+- [x] Create color utility classes
+- [x] Implement dynamic theming capabilities
+- [x] Test cross-browser color rendering
 
 #### 2.1.5: Accessibility Validation
-- [ ] Verify WCAG AA contrast ratios
-- [ ] Test colorblind accessibility modes
-- [ ] Implement color-independent design patterns
-- [ ] Document color usage guidelines
+- [x] Verify WCAG AA contrast ratios
+- [x] Test colorblind accessibility modes
+- [x] Implement color-independent design patterns
+- [x] Document color usage guidelines
 
 ### Sub-task 2.2: Typography and Font System
 
 #### 2.2.1: Font Stack Definition
-- [ ] Define preferred web fonts with fallbacks
-- [ ] Create font-loading strategy for performance
-- [ ] Implement adaptive font loading based on user preferences
+- [x] Define preferred web fonts with fallbacks
+- [x] Create font-loading strategy for performance
+- [x] Implement adaptive font loading based on user preferences
 
 #### 2.2.2: Typography Scale Creation
-- [ ] Establish modular typography scale (6-8 sizes)
-- [ ] Implement line height relationships
-- [ ] Create consistent letter spacing patterns
+- [x] Establish modular typography scale (6-8 sizes)
+- [x] Implement line height relationships
+- [x] Create consistent letter spacing patterns
 
 #### 2.2.3: Font Weight Variations
-- [ ] Implement font weight variations for hierarchy
-- [ ] Define semantic font weights (regular, bold, semi-bold)
-- [ ] Create consistent weight usage patterns
+- [x] Implement font weight variations for hierarchy
+- [x] Define semantic font weights (regular, bold, semi-bold)
+- [x] Create consistent weight usage patterns
 
 #### 2.2.4: Text Truncation Utilities
-- [ ] Implement ellipsis truncation for long text
-- [ ] Create multi-line truncation utilities
-- [ ] Add responsive text truncation
+- [x] Implement ellipsis truncation for long text
+- [x] Create multi-line truncation utilities
+- [x] Add responsive text truncation
 
 #### 2.2.5: Accessibility Features
-- [ ] Test font readability at small sizes
-- [ ] Implement user font scaling compatibility
-- [ ] Create high contrast font variations
+- [x] Test font readability at small sizes
+- [x] Implement user font scaling compatibility
+- [x] Create high contrast font variations
 
 ### Sub-task 2.3: Shadow and Elevation System