🎨 Add soft pink color variant for improved string readability

Add soft pink color variant for improved string readability

- Add pink_soft (#ff99ff) color to both palette and variants
- Update string syntax highlighting to use pink_soft instead of
  pink_bright for better readability
- Maintain consistent color definitions across all variant
  intensities

Provides a gentler pink tone for string literals while preserving
the neon aesthetic of the theme.

Author: hyperb1iss

lua/silkcircuit/palette.lua

@@ -42,6 +42,7 @@ M.colors = get_variant_colors()
 
     pink = "#ff00ff", -- PURE NEON MAGENTA
     pink_bright = "#ff69ff", -- Hot pink - Maximum vibrance
+    pink_soft = "#ff99ff", -- Soft pink - like glow mode strings
 
     coral = "#F78C6C", -- Numbers
     red = "#ff6363", -- CSS selectors
@@ -120,7 +121,7 @@ function M.update_semantic(colors)
     -- Syntax (consistent across all languages)
     keyword = colors.purple,
     variable = colors.fg,
-    string = colors.pink_bright,
+    string = colors.pink_soft,
     number = colors.coral,
     boolean = colors.pink,
     constant = colors.coral,

lua/silkcircuit/variants.lua

@@ -54,6 +54,7 @@ local function create_variant(intensity)
     -- Pinks
     pink = "#ff00ff",
     pink_bright = "#ff69ff",
+    pink_soft = "#ff99ff",
 
     -- Others
     coral = "#F78C6C",