diff --git a/source/engine.cpp b/source/engine.cpp
index b548ca6..c8da655 100644
--- a/source/engine.cpp
+++ b/source/engine.cpp
@@ -1285,7 +1285,10 @@ void Engine::updatePhysicalWindowSize() {
     }
 
     // Notificar a UIManager del cambio de tamaño (delegado)
-    ui_manager_->updatePhysicalWindowSize(physical_window_width_, physical_window_height_);
+    // Pasar current_screen_height_ para que UIManager actualice la altura lógica
+    // (necesario en F4 donde la resolución lógica cambia a la del display)
+    ui_manager_->updatePhysicalWindowSize(physical_window_width_, physical_window_height_,
+                                          current_screen_height_);
 
 }
 
diff --git a/source/ui/ui_manager.cpp b/source/ui/ui_manager.cpp
index dd029e4..6631e74 100644
--- a/source/ui/ui_manager.cpp
+++ b/source/ui/ui_manager.cpp
@@ -172,10 +172,15 @@ void UIManager::updateVSyncText(bool enabled) {
     vsync_text_ = enabled ? "V-Sync: On" : "V-Sync: Off";
 }
 
-void UIManager::updatePhysicalWindowSize(int width, int height) {
+void UIManager::updatePhysicalWindowSize(int width, int height, int logical_height) {
     physical_window_width_ = width;
     physical_window_height_ = height;
 
+    // Actualizar altura lógica si se proporciona (ej. al entrar/salir de F4)
+    if (logical_height > 0) {
+        logical_window_height_ = logical_height;
+    }
+
     // Calcular nuevo tamaño de fuente apropiado basado en altura LÓGICA
     // (las dimensiones lógicas no cambian con zoom, solo con cambios explícitos de resolución)
     int new_font_size = calculateFontSize(logical_window_height_);
@@ -418,9 +423,15 @@ int UIManager::calculateFontSize(int logical_height) const {
     } else if (logical_height < 900) {
         // Rango medio-alto (700-899px) → 18px
         font_size = 18;
+    } else if (logical_height < 1200) {
+        // Rango alto (900-1199px): 900→22, 1080→27, 1199→29
+        font_size = logical_height / 40;
+    } else if (logical_height < 1600) {
+        // Rango muy alto (1200-1599px): 1200→25, 1440→30
+        font_size = logical_height / 48;
     } else {
-        // Rango alto: proporcional (1080px→42, 1440px→55, 2160px→72)
-        font_size = logical_height / 26;
+        // Rango ultra (>=1600px): 1600→26, 2000→33, 2160→36
+        font_size = logical_height / 60;
     }
 
     // Aplicar límites: mínimo 9px, máximo 72px
diff --git a/source/ui/ui_manager.hpp b/source/ui/ui_manager.hpp
index 1e1d0c5..82fa4cc 100644
--- a/source/ui/ui_manager.hpp
+++ b/source/ui/ui_manager.hpp
@@ -111,8 +111,9 @@ class UIManager {
          * @brief Actualiza tamaño físico de ventana (cambios de fullscreen)
          * @param width Nuevo ancho físico
          * @param height Nuevo alto físico
+         * @param logical_height Nuevo alto lógico (0 = sin cambio)
          */
-        void updatePhysicalWindowSize(int width, int height);
+        void updatePhysicalWindowSize(int width, int height, int logical_height = 0);
 
         // === Getters ===