desktop: centralize Gruvbox palette and refine Waybar/Dunst readability

Introduce a shared desktop palette for WM and notifications, then apply it across Hyprland/Waybar/Hyprlock/Dunst while tuning status module visuals (battery state cues, resource thresholds, icon alignment, and Dunst font size) for a more consistent Gruvbox experience.

modules/desktop/dunst.nix

@@ -7,6 +7,7 @@
 
 let
   cfg = config.modules.desktop.dunst;
+  c = (import ./themes/_palette.nix).semantic;
 in
 {
   options.modules.desktop.dunst = {
@@ -38,7 +39,7 @@ in
             padding = 20;
             shrink = "no";
             transparency = 5;
-            font = "monospace 14";
+            font = "MesloLGS Nerd Font 12";
             idle_threshold = 120;
             indicate_hidden = "yes";
             markup = "full";
@@ -49,21 +50,21 @@ in
             sticky_history = "yes";
             sort = "yes";
             frame_width = 1;
-            frame_color = "#1d2021";
+            frame_color = c.bgStrong;
           };
           urgency_low = {
-            foreground = "#ebdbb2";
+            foreground = c.fg;
-            background = "#3c3836";
+            background = c.bgAlt;
             timeout = 8;
           };
           urgency_normal = {
-            foreground = "#ebdbb2";
+            foreground = c.fg;
-            background = "#32302f";
+            background = c.bg;
             timeout = 14;
           };
           urgency_critical = {
-            foreground = "#32302f";
+            foreground = c.bg;
-            background = "#cc241d";
+            background = c.critical;
             timeout = 0;
           };
         };

modules/desktop/themes/_palette.nix

@@ -0,0 +1,54 @@
+let
+  mkHex = value: "#${value}";
+  mkRgb = value: "rgb(${value})";
+
+  base = {
+    bg0Hard = "1d2021";
+    bg0 = "282828";
+    bg0Soft = "32302f";
+    bg1 = "3c3836";
+    bg2 = "504945";
+    bg3 = "665c54";
+
+    fg0 = "fbf1c7";
+    fg1 = "ebdbb2";
+    fg4 = "a89984";
+
+    red = "fb4934";
+    orange = "fe8019";
+    yellow = "fabd2f";
+    green = "b8bb26";
+    aqua = "8ec07c";
+    blue = "83a598";
+    purple = "d3869b";
+  };
+
+  hex = builtins.mapAttrs (_: mkHex) base;
+  rgb = builtins.mapAttrs (_: mkRgb) base;
+in
+{
+  inherit base hex rgb;
+
+  semantic = {
+    bg = hex.bg0;
+    bgAlt = hex.bg1;
+    bgHover = hex.bg3;
+    bgStrong = hex.bg0Hard;
+
+    fg = hex.fg1;
+    fgMuted = hex.fg4;
+
+    accent = hex.orange;
+    info = hex.blue;
+    success = hex.green;
+    warning = hex.yellow;
+    critical = hex.red;
+
+    borderActiveRgb = rgb.orange;
+    borderInactiveRgb = rgb.bg2;
+
+    lockInnerRgb = rgb.bg0Soft;
+    lockOuterRgb = rgb.orange;
+    lockTextRgb = rgb.fg1;
+  };
+}

modules/desktop/wm.nix

@@ -9,6 +9,7 @@ let
   cfg = config.modules.desktop.wm;
   term = "${config.home-manager.users.${config.user.name}.programs.kitty.package}/bin/kitty";
   wallpaper = config.modules.desktop.wallpaper;
+  c = (import ./themes/_palette.nix).semantic;
 in
 {
   options.modules.desktop.wm = {
@@ -62,8 +63,8 @@ in
               gaps_in = 7;
               gaps_out = 14;
               border_size = 2;
-              "col.active_border" = "rgb(B28121)";
+              "col.active_border" = c.borderActiveRgb;
-              "col.inactive_border" = "rgb(504945)";
+              "col.inactive_border" = c.borderInactiveRgb;
               no_focus_fallback = false;
               resize_on_border = false;
               hover_icon_on_border = false;
@@ -351,41 +352,41 @@ in
             }
 
             tooltip {
-              background: #282828;
+              background: ${c.bg};
               border: 0px solid;
               border-radius: 0px;
             }
 
             window#waybar {
-              background: #282828;
+              background: ${c.bg};
-              color: #ebdbb2;
+              color: ${c.fg};
             }
 
             #workspaces button {
               padding: 0 0.6em;
-              color: #a89984;
+              color: ${c.fgMuted};
               border-radius: 0px;
             }
 
             #workspaces button.active {
-              color: #ebdbb2;
+              color: ${c.fg};
-              background: #665c54;
+              background: ${c.bgHover};
             }
 
             #workspaces button.urgent {
-              color: #1d2021;
+              color: ${c.bgStrong};
-              background: #fb4934;
+              background: ${c.critical};
             }
 
             #workspaces button:hover {
-              background: #665c54;
+              background: ${c.bgHover};
             }
 
             #network,
             #workspaces,
             #bluetooth,
             #tray {
-              color: #ebdbb2;
+              color: ${c.fg};
               padding: 0 5px;
               margin: 0 5px;
             }
@@ -397,33 +398,33 @@ in
             #clock {
               padding: 0 5px;
               margin: 0 5px;
-              color: #83a598;
+              color: ${c.info};
             }
 
             #battery.charging,
             #battery.plugged,
             #battery.full {
-              color: #b8bb26;
+              color: ${c.success};
             }
 
             #battery.warning:not(.charging) {
-              color: #fabd2f;
+              color: ${c.warning};
             }
 
             #cpu.warning,
             #memory.warning,
             #disk.warning {
-              color: #fabd2f;
+              color: ${c.warning};
             }
 
             #battery.critical:not(.charging) {
-              color: #fb4934;
+              color: ${c.critical};
             }
 
             #cpu.critical,
             #memory.critical,
             #disk.critical {
-              color: #fb4934;
+              color: ${c.critical};
             }
           '';
           package = pkgs.waybar.override { wireplumberSupport = false; };
@@ -487,9 +488,9 @@ in
                 dots_center = true;
                 fade_on_empty = false;
                 outline_thickness = 3;
-                inner_color = "rgb(50, 48, 47)";
+                inner_color = c.lockInnerRgb;
-                outer_color = "rgb(231, 138, 78)";
+                outer_color = c.lockOuterRgb;
-                font_color = "rgb(212, 190, 152)";
+                font_color = c.lockTextRgb;
                 placeholder_text = "Password...";
               }
             ];
@@ -498,7 +499,7 @@ in
               {
                 monitor = "";
                 text = "$TIME";
-                color = "rgb(212, 190, 152)";
+                color = c.lockTextRgb;
                 font_size = 42;
                 font_family = "MesloLGS Nerd Font Propo";
                 position = "0, 160";
@@ -508,7 +509,7 @@ in
               {
                 monitor = "";
                 text = "cmd[update:1000] date +%d/%m/%Y";
-                color = "rgb(212, 190, 152)";
+                color = c.lockTextRgb;
                 font_size = 18;
                 font_family = "MesloLGS Nerd Font Propo";
                 position = "0, 120";