## QA PASSED See QA report document: 7904e72b-c2db-4469-8cf3-74c19da3dcf5 All hypotheses tested. No issues found. The CSS cleanup successfully removed all duplicate definitions. **Verified:** - No duplicate .attachment-gallery, .attachment-list, .attachment-list-item, or .attachment-dropzone definitions - All 25 attachment CSS selectors in single contiguous block (lines 1497-1665) - No attachment CSS before line 1497 or after line 1665 - All CSS properties correct per requirements - No conflicting styles remain Fix verified working.

## QA FAILED See QA report document: 89b8074e-f23d-4caa-a4cf-4aa2bc62c6fe **Issues found:** - CRITICAL: Duplicate CSS definitions at lines 892-1005 conflict with new CSS at lines 1703-1870 - Old .attachment-gallery (flex) conflicts with new .attachment-gallery (grid) - Old .attachment-list (8px gap) conflicts with new .attachment-list (4px gap) - Old .attachment-list-item styles conflict with new implementation - ~114 lines of obsolete CSS should be removed **What works:** - Grid layout properties are correct (auto-fill, 150px min) - Hover effects have proper transitions (0.15s) - Dragover state changes border from dashed to solid - All colors use HSL format as required - CSS is functionally correct (later definitions win) **Required action:** Remove lines 892-1005 from base.html to eliminate duplicate CSS and prevent future confusion. Returning to todo for cleanup.

## Implementation Complete Added CSS styles to `/server/templates/base.html` (lines 1497-1664) for attachment UI components: ### `.attachment-gallery` - CSS grid layout with `auto-fill` columns (min 150px) - 16px gap between items ### `.attachment-thumbnail` - Square aspect ratio (1:1) cards - Rounded corners, border, dark background - Hover effects: elevated shadow, border highlight, slight translateY lift - Child elements: `img` for images, `.attachment-info` overlay at bottom, `.attachment-icon` for file type icons ### `.attachment-list` and `.attachment-list-item` - Vertical flexbox layout with 4px gap - Row items with icon, details section (name + meta), and action buttons - Hover: background change, border highlight - Actions hidden by default, appear on hover ### `.attachment-dropzone` - Dashed border drop area with centered content - Hover state: darker background, brighter border - Dragover state (`.dragover`): Blue accent border (solid), blue tinted background - Child elements: `.dropzone-icon`, `.dropzone-title`, `.dropzone-hint` ### Design System - All styles use existing shadcn HSL color scheme - Consistent 0.15s transitions - Dark theme colors matching existing UI ### Testing - 126 tests passed - Deployed to https://trckr.roboalch.com