Update color settings for UI elements and completion menu

- Added darker cyan for UI elements in diagnostics.
- Adjusted FloatBorder and Pmenu colors for better visibility.

lua/paper-tonic-modern/groups/editor.lua

@@ -10,7 +10,7 @@ return {
   
   Normal = { fg = c.fg, bg = c.bg },
   NormalFloat = { fg = c.fg, bg = c.bg },
-  FloatBorder = { fg = c.diag_hint, bg = c.bg },
+  FloatBorder = { fg = c.diag_hint_dark, bg = c.bg },
   
   -- ============================================================================
   -- Cursor & Line Highlighting
@@ -66,11 +66,12 @@ return {
   -- Popup Menu (Completion)
   -- ============================================================================
   
-  Pmenu = { fg = c.fg, bg = c.bg_ui },
-  PmenuSel = { fg = c.fg_strong, bg = c.bg_ui, bold = true },
-  PmenuSbar = 'Pmenu',
-  PmenuThumb = 'Pmenu',
-  WildMenu = { fg = c.fg_strong, bg = c.bg_ui, bold = true },
+  Pmenu = { fg = c.diag_hint_dark, bg = c.bg },
+  PmenuSel = { fg = c.fg_strong, bg = c.bg_hl, bold = true },
+  PmenuSbar = { fg = c.NONE, bg = c.bg_hl },
+  PmenuThumb = { fg = c.NONE, bg = c.fg_weaker },
+  PmenuBorder = { fg = c.diag_hint_dark, bg = c.bg },
+  WildMenu = { fg = c.fg_strong, bg = c.bg_hl, bold = true },
   
   -- ============================================================================
   -- Folds

lua/paper-tonic-modern/groups/plugins.lua

@@ -63,10 +63,11 @@ return {
   -- ============================================================================
   
   -- Menu
-  CmpItemMenu = { fg = c.fg_weak, italic = true },
+  CmpItemAbbr = { fg = c.fg },
   CmpItemAbbrMatch = { fg = c.primary, bold = true },
   CmpItemAbbrMatchFuzzy = { fg = c.primary_weak },
   CmpItemAbbrDeprecated = { fg = c.fg_weak, strikethrough = true },
+  CmpItemMenu = { fg = c.fg_weak, italic = true },
   
   -- Kind icons/labels
   CmpItemKindDefault = { fg = c.fg },