diff --git a/CLAUDE.md b/CLAUDE.md
index 0f493ef..00987ad 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -84,7 +84,7 @@ Pipeline SDL3 GPU portat de `coffee_crisis_arcade_edition`. El canvas 256×192 e
   - `videoGpuPreferredDriver` (string, buit = auto)
   - `videoShaderEnabled` (bool)
   - `videoShaderType` (0=POSTFX, 1=CRTPI)
-- **Hotkeys** (provisionals fins que hi hagi menú d'opcions): `F9` toggle GPU · `F10` toggle shader · `F11` alterna POSTFX ↔ CRTPI.
+- **Hotkeys** (provisionals fins que hi hagi menú d'opcions): `F4` activa/desactiva post-procesado · `F5` alterna POSTFX ↔ CRTPI (només si està actiu) · `F6` següent preset (només si està actiu). No hi ha tecla per a preset anterior.
 - **API** a `Screen`: `setGpuAcceleration`/`toggleGpuAcceleration`/`isGpuAccelerated`, `setShaderEnabled`/`toggleShaderEnabled`/`isShaderEnabled`, `setActiveShader`/`toggleActiveShader`/`getActiveShader`.
 
 Presets PostFX/CrtPi i cicle de presets encara **no** estan implementats — arribaran amb la migració a YAML. Per ara, valors per defecte hardcoded.
diff --git a/source/core/input/global_inputs.cpp b/source/core/input/global_inputs.cpp
index 3d57e50..0cd469b 100644
--- a/source/core/input/global_inputs.cpp
+++ b/source/core/input/global_inputs.cpp
@@ -20,21 +20,20 @@ namespace GlobalInputs {
             Screen::get()->incWindowZoom();
             return true;
         }
-        if (Input::get()->checkInput(input_prev_preset, REPEAT_FALSE)) {
-            Screen::get()->prevPreset();
-            return true;
-        }
-        if (Input::get()->checkInput(input_next_preset, REPEAT_FALSE)) {
-            Screen::get()->nextPreset();
-            return true;
-        }
         if (Input::get()->checkInput(input_toggle_shader, REPEAT_FALSE)) {
             Screen::get()->toggleShaderEnabled();
             return true;
         }
-        if (Input::get()->checkInput(input_toggle_shader_type, REPEAT_FALSE)) {
-            Screen::get()->toggleActiveShader();
-            return true;
+        // F5/F6 només actuen quan el post-procesado està actiu.
+        if (Screen::get()->isShaderEnabled()) {
+            if (Input::get()->checkInput(input_toggle_shader_type, REPEAT_FALSE)) {
+                Screen::get()->toggleActiveShader();
+                return true;
+            }
+            if (Input::get()->checkInput(input_next_preset, REPEAT_FALSE)) {
+                Screen::get()->nextPreset();
+                return true;
+            }
         }
         return false;
     }
diff --git a/source/core/input/input.h b/source/core/input/input.h
index a5600bd..c67ac48 100644
--- a/source/core/input/input.h
+++ b/source/core/input/input.h
@@ -35,7 +35,6 @@ enum inputs_e {
     input_window_dec_size,
 
     // GPU / shaders (hotkeys provisionales hasta que haya menú de opciones)
-    input_prev_preset,
     input_next_preset,
     input_toggle_shader,
     input_toggle_shader_type,
diff --git a/source/core/system/director.cpp b/source/core/system/director.cpp
index 78c55fc..44c7989 100644
--- a/source/core/system/director.cpp
+++ b/source/core/system/director.cpp
@@ -210,10 +210,9 @@ void Director::initInput() {
     Input::get()->bindKey(input_window_dec_size, SDL_SCANCODE_F1);
     Input::get()->bindKey(input_window_inc_size, SDL_SCANCODE_F2);
     Input::get()->bindKey(input_window_fullscreen, SDL_SCANCODE_F3);
-    Input::get()->bindKey(input_prev_preset, SDL_SCANCODE_F8);
-    Input::get()->bindKey(input_next_preset, SDL_SCANCODE_F9);
-    Input::get()->bindKey(input_toggle_shader, SDL_SCANCODE_F10);
-    Input::get()->bindKey(input_toggle_shader_type, SDL_SCANCODE_F11);
+    Input::get()->bindKey(input_toggle_shader, SDL_SCANCODE_F4);
+    Input::get()->bindKey(input_toggle_shader_type, SDL_SCANCODE_F5);
+    Input::get()->bindKey(input_next_preset, SDL_SCANCODE_F6);
 
     // Mando - Movimiento del jugador
     Input::get()->bindGameControllerButton(input_up, SDL_GAMEPAD_BUTTON_DPAD_UP);