feat: Animaciones de logos sincronizadas con retraso + easing en alpha

Implementa sistema de sincronización elegante entre logos con efecto de
"seguimiento" y fade suavizado para eliminar desincronización visual.

Cambios principales:

1. **Animación sincronizada**: Ambos logos usan la MISMA animación
   - Eliminadas 4 variables independientes (logo1/logo2 × entry/exit)
   - Una sola variable `current_animation_` compartida
   - Misma animación para entrada y salida (simetría)

2. **Retraso de Logo 2**: 0.25 segundos detrás de Logo 1
   - Logo 1 empieza en t=0.00s
   - Logo 2 empieza en t=0.25s
   - Efecto visual de "eco" o "seguimiento"

3. **Alpha independiente con retraso**:
   - `logo1_alpha_` y `logo2_alpha_` separados
   - Logo 2 aparece/desaparece más tarde visualmente

4. **Easing en alpha** (NUEVO):
   - Aplicado `easeInOutQuad()` al fade de alpha
   - Elimina problema de "logo deformado esperando a desvanecerse"
   - Sincronización visual perfecta entre animación y fade
   - Curva suave: lento al inicio, rápido en medio, lento al final

Comportamiento resultante:

FADE_IN:
- t=0.00s: Logo 1 empieza (alpha con easing)
- t=0.25s: Logo 2 empieza (alpha con easing + retraso)
- t=0.50s: Logo 1 completamente visible
- t=0.75s: Logo 2 completamente visible

FADE_OUT:
- t=0.00s: Logo 1 empieza a desaparecer (misma animación)
- t=0.25s: Logo 2 empieza a desaparecer
- t=0.50s: Logo 1 completamente invisible
- t=0.75s: Logo 2 completamente invisible

Archivos modificados:
- source/defines.h: +APPLOGO_LOGO2_DELAY
- source/app_logo.h: Reestructuración de variables de animación/alpha
- source/app_logo.cpp: Implementación de retraso + easing

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

source/app_logo.cpp

@@ -1,77 +1,194 @@
 #include "app_logo.h"
 
-#include <SDL3/SDL_render.h>  // for SDL_SCALEMODE_LINEAR, SDL_RenderGeometry
+#include <SDL3/SDL_render.h>  // for SDL_DestroyTexture, SDL_RenderGeometry, SDL_SetTextureAlphaMod
 #include <cmath>              // for powf, sinf, cosf
+#include <cstdlib>            // for free()
+#include <iostream>           // for std::cout
 
-#include "external/sprite.h"   // for Sprite
-#include "external/texture.h"  // for Texture
+#include "logo_scaler.h"      // for LogoScaler
+#include "defines.h"          // for APPLOGO_HEIGHT_PERCENT, getResourcesDirectory
+
+// ============================================================================
+// Destructor - Liberar las 4 texturas SDL
+// ============================================================================
+
+AppLogo::~AppLogo() {
+    if (logo1_base_texture_) {
+        SDL_DestroyTexture(logo1_base_texture_);
+        logo1_base_texture_ = nullptr;
+    }
+    if (logo1_native_texture_) {
+        SDL_DestroyTexture(logo1_native_texture_);
+        logo1_native_texture_ = nullptr;
+    }
+    if (logo2_base_texture_) {
+        SDL_DestroyTexture(logo2_base_texture_);
+        logo2_base_texture_ = nullptr;
+    }
+    if (logo2_native_texture_) {
+        SDL_DestroyTexture(logo2_native_texture_);
+        logo2_native_texture_ = nullptr;
+    }
+}
+
+// ============================================================================
+// Inicialización - Pre-escalar logos a 2 resoluciones (base y nativa)
+// ============================================================================
 
 bool AppLogo::initialize(SDL_Renderer* renderer, int screen_width, int screen_height) {
     renderer_ = renderer;
+    base_screen_width_ = screen_width;
+    base_screen_height_ = screen_height;
     screen_width_ = screen_width;
     screen_height_ = screen_height;
 
     std::string resources_dir = getResourcesDirectory();
 
     // ========================================================================
-    // Cargar LOGO1 desde data/logo/logo.png
+    // 1. Detectar resolución nativa del monitor
+    // ========================================================================
+    if (!LogoScaler::detectNativeResolution(native_screen_width_, native_screen_height_)) {
+        std::cout << "No se pudo detectar resolución nativa, usando solo base" << std::endl;
+        // Fallback: usar resolución base como nativa
+        native_screen_width_ = screen_width;
+        native_screen_height_ = screen_height;
+    }
+
+    // ========================================================================
+    // 2. Calcular alturas finales para ambas resoluciones
+    // ========================================================================
+    int logo_base_target_height = static_cast<int>(base_screen_height_ * APPLOGO_HEIGHT_PERCENT);
+    int logo_native_target_height = static_cast<int>(native_screen_height_ * APPLOGO_HEIGHT_PERCENT);
+
+    std::cout << "Pre-escalando logos:" << std::endl;
+    std::cout << "  Base: " << base_screen_width_ << "x" << base_screen_height_
+              << " (altura logo: " << logo_base_target_height << "px)" << std::endl;
+    std::cout << "  Nativa: " << native_screen_width_ << "x" << native_screen_height_
+              << " (altura logo: " << logo_native_target_height << "px)" << std::endl;
+
+    // ========================================================================
+    // 3. Cargar y escalar LOGO1 (data/logo/logo.png) a 2 versiones
     // ========================================================================
     std::string logo1_path = resources_dir + "/data/logo/logo.png";
-    logo1_texture_ = std::make_shared<Texture>(renderer, logo1_path);
-    if (logo1_texture_->getWidth() == 0 || logo1_texture_->getHeight() == 0) {
-        // Error al cargar textura logo1
+
+    // 3a. Versión BASE de logo1
+    unsigned char* logo1_base_data = LogoScaler::loadAndScale(
+        logo1_path,
+        0,  // width calculado automáticamente por aspect ratio
+        logo_base_target_height,
+        logo1_base_width_,
+        logo1_base_height_
+    );
+    if (logo1_base_data == nullptr) {
+        std::cout << "Error: No se pudo escalar logo1 (base)" << std::endl;
         return false;
     }
 
-    // Configurar filtrado LINEAR para suavizado
-    logo1_texture_->setScaleMode(SDL_SCALEMODE_LINEAR);
+    logo1_base_texture_ = LogoScaler::createTextureFromBuffer(
+        renderer, logo1_base_data, logo1_base_width_, logo1_base_height_
+    );
+    free(logo1_base_data);  // Liberar buffer temporal
 
-    // Crear sprite con la textura
-    logo1_sprite_ = std::make_unique<Sprite>(logo1_texture_);
+    if (logo1_base_texture_ == nullptr) {
+        std::cout << "Error: No se pudo crear textura logo1 (base)" << std::endl;
+        return false;
+    }
 
-    // Configurar el clip para que use toda la textura
-    float logo1_width = static_cast<float>(logo1_texture_->getWidth());
-    float logo1_height = static_cast<float>(logo1_texture_->getHeight());
-    logo1_sprite_->setClip({0.0f, 0.0f, logo1_width, logo1_height});
+    // Habilitar alpha blending
+    SDL_SetTextureBlendMode(logo1_base_texture_, SDL_BLENDMODE_BLEND);
+
+    // 3b. Versión NATIVA de logo1
+    unsigned char* logo1_native_data = LogoScaler::loadAndScale(
+        logo1_path,
+        0,  // width calculado automáticamente
+        logo_native_target_height,
+        logo1_native_width_,
+        logo1_native_height_
+    );
+    if (logo1_native_data == nullptr) {
+        std::cout << "Error: No se pudo escalar logo1 (nativa)" << std::endl;
+        return false;
+    }
+
+    logo1_native_texture_ = LogoScaler::createTextureFromBuffer(
+        renderer, logo1_native_data, logo1_native_width_, logo1_native_height_
+    );
+    free(logo1_native_data);
+
+    if (logo1_native_texture_ == nullptr) {
+        std::cout << "Error: No se pudo crear textura logo1 (nativa)" << std::endl;
+        return false;
+    }
+
+    SDL_SetTextureBlendMode(logo1_native_texture_, SDL_BLENDMODE_BLEND);
 
     // ========================================================================
-    // Cargar LOGO2 desde data/logo/logo2.png
+    // 4. Cargar y escalar LOGO2 (data/logo/logo2.png) a 2 versiones
     // ========================================================================
     std::string logo2_path = resources_dir + "/data/logo/logo2.png";
-    logo2_texture_ = std::make_shared<Texture>(renderer, logo2_path);
-    if (logo2_texture_->getWidth() == 0 || logo2_texture_->getHeight() == 0) {
-        // Error al cargar textura logo2
+
+    // 4a. Versión BASE de logo2
+    unsigned char* logo2_base_data = LogoScaler::loadAndScale(
+        logo2_path,
+        0,
+        logo_base_target_height,
+        logo2_base_width_,
+        logo2_base_height_
+    );
+    if (logo2_base_data == nullptr) {
+        std::cout << "Error: No se pudo escalar logo2 (base)" << std::endl;
         return false;
     }
 
-    // Configurar filtrado LINEAR para suavizado
-    logo2_texture_->setScaleMode(SDL_SCALEMODE_LINEAR);
+    logo2_base_texture_ = LogoScaler::createTextureFromBuffer(
+        renderer, logo2_base_data, logo2_base_width_, logo2_base_height_
+    );
+    free(logo2_base_data);
 
-    // Crear sprite con la textura
-    logo2_sprite_ = std::make_unique<Sprite>(logo2_texture_);
+    if (logo2_base_texture_ == nullptr) {
+        std::cout << "Error: No se pudo crear textura logo2 (base)" << std::endl;
+        return false;
+    }
 
-    // Configurar el clip para que use toda la textura
-    float logo2_width = static_cast<float>(logo2_texture_->getWidth());
-    float logo2_height = static_cast<float>(logo2_texture_->getHeight());
-    logo2_sprite_->setClip({0.0f, 0.0f, logo2_width, logo2_height});
+    SDL_SetTextureBlendMode(logo2_base_texture_, SDL_BLENDMODE_BLEND);
+
+    // 4b. Versión NATIVA de logo2
+    unsigned char* logo2_native_data = LogoScaler::loadAndScale(
+        logo2_path,
+        0,
+        logo_native_target_height,
+        logo2_native_width_,
+        logo2_native_height_
+    );
+    if (logo2_native_data == nullptr) {
+        std::cout << "Error: No se pudo escalar logo2 (nativa)" << std::endl;
+        return false;
+    }
+
+    logo2_native_texture_ = LogoScaler::createTextureFromBuffer(
+        renderer, logo2_native_data, logo2_native_width_, logo2_native_height_
+    );
+    free(logo2_native_data);
+
+    if (logo2_native_texture_ == nullptr) {
+        std::cout << "Error: No se pudo crear textura logo2 (nativa)" << std::endl;
+        return false;
+    }
+
+    SDL_SetTextureBlendMode(logo2_native_texture_, SDL_BLENDMODE_BLEND);
 
     // ========================================================================
-    // Calcular tamaño base (asumimos mismo tamaño para ambos logos)
-    // El logo debe tener una altura de APPLOGO_HEIGHT_PERCENT (40%) de la pantalla
+    // 5. Inicialmente usar texturas BASE (la resolución de inicio)
     // ========================================================================
-    float target_height = screen_height_ * APPLOGO_HEIGHT_PERCENT;
-    float scale = target_height / logo1_height;
+    logo1_current_texture_ = logo1_base_texture_;
+    logo1_current_width_ = logo1_base_width_;
+    logo1_current_height_ = logo1_base_height_;
 
-    base_width_ = logo1_width * scale;
-    base_height_ = target_height;  // = logo1_height * scale
-
-    // Aplicar escala inicial a ambos sprites
-    logo1_sprite_->setSize(base_width_, base_height_);
-    logo2_sprite_->setSize(base_width_, base_height_);
-
-    // Posicionar ambos logos en el centro del cuadrante inferior derecho (superpuestos)
-    updateLogoPosition();
+    logo2_current_texture_ = logo2_base_texture_;
+    logo2_current_width_ = logo2_base_width_;
+    logo2_current_height_ = logo2_base_height_;
 
+    std::cout << "Logos pre-escalados exitosamente (4 texturas creadas)" << std::endl;
     return true;
 }
 
@@ -80,7 +197,8 @@ void AppLogo::update(float delta_time, AppMode current_mode) {
     if (current_mode == AppMode::SANDBOX) {
         state_ = AppLogoState::HIDDEN;
         timer_ = 0.0f;
-        current_alpha_ = 0;
+        logo1_alpha_ = 0;
+        logo2_alpha_ = 0;
         return;
     }
 
@@ -93,22 +211,27 @@ void AppLogo::update(float delta_time, AppMode current_mode) {
             if (timer_ >= APPLOGO_DISPLAY_INTERVAL) {
                 state_ = AppLogoState::FADE_IN;
                 timer_ = 0.0f;
-                current_alpha_ = 0;
-                // Elegir animaciones de entrada aleatorias (independientes para cada logo)
-                logo1_entry_animation_ = getRandomAnimation();
-                logo2_entry_animation_ = getRandomAnimation();
+                logo1_alpha_ = 0;
+                logo2_alpha_ = 0;
+                // Elegir UNA animación aleatoria (misma para ambos logos, misma entrada y salida)
+                current_animation_ = getRandomAnimation();
             }
             break;
 
         case AppLogoState::FADE_IN:
-            // Fade in: alpha de 0 a 255, animaciones independientes para logo1 y logo2
+            // Fade in: alpha de 0 a 255, con Logo 2 retrasado 0.25s
             {
-                float fade_progress = timer_ / APPLOGO_FADE_DURATION;
-                if (fade_progress >= 1.0f) {
-                    // Fade in completado
+                // Calcular progreso de cada logo (Logo 2 con retraso)
+                float fade_progress_logo1 = timer_ / APPLOGO_FADE_DURATION;
+                float fade_progress_logo2 = std::max(0.0f, (timer_ - APPLOGO_LOGO2_DELAY) / APPLOGO_FADE_DURATION);
+
+                // Verificar si fade in completado (cuando logo2 también termina)
+                if (fade_progress_logo2 >= 1.0f) {
+                    // Fade in completado para ambos logos
                     state_ = AppLogoState::VISIBLE;
                     timer_ = 0.0f;
-                    current_alpha_ = 255;
+                    logo1_alpha_ = 255;
+                    logo2_alpha_ = 255;
                     // Resetear variables de ambos logos
                     logo1_scale_ = 1.0f;
                     logo1_squash_y_ = 1.0f;
@@ -119,59 +242,24 @@ void AppLogo::update(float delta_time, AppMode current_mode) {
                     logo2_stretch_x_ = 1.0f;
                     logo2_rotation_ = 0.0f;
                 } else {
-                    // Interpolar alpha linealmente (0 → 255) - compartido
-                    current_alpha_ = static_cast<int>(fade_progress * 255.0f);
+                    // Interpolar alpha con retraso + easing para suavidad
+                    float eased_prog1 = easeInOutQuad(std::min(1.0f, fade_progress_logo1));
+                    float eased_prog2 = easeInOutQuad(std::min(1.0f, fade_progress_logo2));
+                    logo1_alpha_ = static_cast<int>(eased_prog1 * 255.0f);
+                    logo2_alpha_ = static_cast<int>(eased_prog2 * 255.0f);
 
                     // ================================================================
-                    // Aplicar animación de LOGO1 según logo1_entry_animation_
+                    // Aplicar MISMA animación (current_animation_) a ambos logos
+                    // con sus respectivos progresos
                     // ================================================================
-                    switch (logo1_entry_animation_) {
+                    switch (current_animation_) {
                         case AppLogoAnimationType::ZOOM_ONLY:
-                            logo1_scale_ = 1.2f - (fade_progress * 0.2f);
+                            logo1_scale_ = 1.2f - (std::min(1.0f, fade_progress_logo1) * 0.2f);
                             logo1_squash_y_ = 1.0f;
                             logo1_stretch_x_ = 1.0f;
                             logo1_rotation_ = 0.0f;
-                            break;
 
-                        case AppLogoAnimationType::ELASTIC_STICK:
-                            {
-                                float elastic_t = easeOutElastic(fade_progress);
-                                logo1_scale_ = 1.2f - (elastic_t * 0.2f);
-                                float squash_t = easeOutBack(fade_progress);
-                                logo1_squash_y_ = 0.6f + (squash_t * 0.4f);
-                                logo1_stretch_x_ = 1.0f + (1.0f - logo1_squash_y_) * 0.5f;
-                                logo1_rotation_ = 0.0f;
-                            }
-                            break;
-
-                        case AppLogoAnimationType::ROTATE_SPIRAL:
-                            {
-                                float ease_t = easeInOutQuad(fade_progress);
-                                logo1_scale_ = 0.3f + (ease_t * 0.7f);
-                                logo1_rotation_ = (1.0f - fade_progress) * 6.28f;
-                                logo1_squash_y_ = 1.0f;
-                                logo1_stretch_x_ = 1.0f;
-                            }
-                            break;
-
-                        case AppLogoAnimationType::BOUNCE_SQUASH:
-                            {
-                                float bounce_t = easeOutBounce(fade_progress);
-                                logo1_scale_ = 1.0f;
-                                float squash_amount = (1.0f - bounce_t) * 0.3f;
-                                logo1_squash_y_ = 1.0f - squash_amount;
-                                logo1_stretch_x_ = 1.0f + squash_amount * 0.5f;
-                                logo1_rotation_ = 0.0f;
-                            }
-                            break;
-                    }
-
-                    // ================================================================
-                    // Aplicar animación de LOGO2 según logo2_entry_animation_
-                    // ================================================================
-                    switch (logo2_entry_animation_) {
-                        case AppLogoAnimationType::ZOOM_ONLY:
-                            logo2_scale_ = 1.2f - (fade_progress * 0.2f);
+                            logo2_scale_ = 1.2f - (std::min(1.0f, fade_progress_logo2) * 0.2f);
                             logo2_squash_y_ = 1.0f;
                             logo2_stretch_x_ = 1.0f;
                             logo2_rotation_ = 0.0f;
@@ -179,10 +267,19 @@ void AppLogo::update(float delta_time, AppMode current_mode) {
 
                         case AppLogoAnimationType::ELASTIC_STICK:
                             {
-                                float elastic_t = easeOutElastic(fade_progress);
-                                logo2_scale_ = 1.2f - (elastic_t * 0.2f);
-                                float squash_t = easeOutBack(fade_progress);
-                                logo2_squash_y_ = 0.6f + (squash_t * 0.4f);
+                                float prog1 = std::min(1.0f, fade_progress_logo1);
+                                float elastic_t1 = easeOutElastic(prog1);
+                                logo1_scale_ = 1.2f - (elastic_t1 * 0.2f);
+                                float squash_t1 = easeOutBack(prog1);
+                                logo1_squash_y_ = 0.6f + (squash_t1 * 0.4f);
+                                logo1_stretch_x_ = 1.0f + (1.0f - logo1_squash_y_) * 0.5f;
+                                logo1_rotation_ = 0.0f;
+
+                                float prog2 = std::min(1.0f, fade_progress_logo2);
+                                float elastic_t2 = easeOutElastic(prog2);
+                                logo2_scale_ = 1.2f - (elastic_t2 * 0.2f);
+                                float squash_t2 = easeOutBack(prog2);
+                                logo2_squash_y_ = 0.6f + (squash_t2 * 0.4f);
                                 logo2_stretch_x_ = 1.0f + (1.0f - logo2_squash_y_) * 0.5f;
                                 logo2_rotation_ = 0.0f;
                             }
@@ -190,9 +287,17 @@ void AppLogo::update(float delta_time, AppMode current_mode) {
 
                         case AppLogoAnimationType::ROTATE_SPIRAL:
                             {
-                                float ease_t = easeInOutQuad(fade_progress);
-                                logo2_scale_ = 0.3f + (ease_t * 0.7f);
-                                logo2_rotation_ = (1.0f - fade_progress) * 6.28f;
+                                float prog1 = std::min(1.0f, fade_progress_logo1);
+                                float ease_t1 = easeInOutQuad(prog1);
+                                logo1_scale_ = 0.3f + (ease_t1 * 0.7f);
+                                logo1_rotation_ = (1.0f - prog1) * 6.28f;
+                                logo1_squash_y_ = 1.0f;
+                                logo1_stretch_x_ = 1.0f;
+
+                                float prog2 = std::min(1.0f, fade_progress_logo2);
+                                float ease_t2 = easeInOutQuad(prog2);
+                                logo2_scale_ = 0.3f + (ease_t2 * 0.7f);
+                                logo2_rotation_ = (1.0f - prog2) * 6.28f;
                                 logo2_squash_y_ = 1.0f;
                                 logo2_stretch_x_ = 1.0f;
                             }
@@ -200,11 +305,20 @@ void AppLogo::update(float delta_time, AppMode current_mode) {
 
                         case AppLogoAnimationType::BOUNCE_SQUASH:
                             {
-                                float bounce_t = easeOutBounce(fade_progress);
+                                float prog1 = std::min(1.0f, fade_progress_logo1);
+                                float bounce_t1 = easeOutBounce(prog1);
+                                logo1_scale_ = 1.0f;
+                                float squash_amount1 = (1.0f - bounce_t1) * 0.3f;
+                                logo1_squash_y_ = 1.0f - squash_amount1;
+                                logo1_stretch_x_ = 1.0f + squash_amount1 * 0.5f;
+                                logo1_rotation_ = 0.0f;
+
+                                float prog2 = std::min(1.0f, fade_progress_logo2);
+                                float bounce_t2 = easeOutBounce(prog2);
                                 logo2_scale_ = 1.0f;
-                                float squash_amount = (1.0f - bounce_t) * 0.3f;
-                                logo2_squash_y_ = 1.0f - squash_amount;
-                                logo2_stretch_x_ = 1.0f + squash_amount * 0.5f;
+                                float squash_amount2 = (1.0f - bounce_t2) * 0.3f;
+                                logo2_squash_y_ = 1.0f - squash_amount2;
+                                logo2_stretch_x_ = 1.0f + squash_amount2 * 0.5f;
                                 logo2_rotation_ = 0.0f;
                             }
                             break;
@@ -218,22 +332,26 @@ void AppLogo::update(float delta_time, AppMode current_mode) {
             if (timer_ >= APPLOGO_DISPLAY_DURATION) {
                 state_ = AppLogoState::FADE_OUT;
                 timer_ = 0.0f;
-                current_alpha_ = 255;
-                // Elegir animaciones de salida aleatorias (independientes para cada logo)
-                logo1_exit_animation_ = getRandomAnimation();
-                logo2_exit_animation_ = getRandomAnimation();
+                logo1_alpha_ = 255;
+                logo2_alpha_ = 255;
+                // NO elegir nueva animación - reutilizar current_animation_ (simetría entrada/salida)
             }
             break;
 
         case AppLogoState::FADE_OUT:
-            // Fade out: alpha de 255 a 0, animaciones independientes para logo1 y logo2
+            // Fade out: alpha de 255 a 0, con Logo 2 retrasado 0.25s (misma animación que entrada)
             {
-                float fade_progress = timer_ / APPLOGO_FADE_DURATION;
-                if (fade_progress >= 1.0f) {
+                // Calcular progreso de cada logo (Logo 2 con retraso)
+                float fade_progress_logo1 = timer_ / APPLOGO_FADE_DURATION;
+                float fade_progress_logo2 = std::max(0.0f, (timer_ - APPLOGO_LOGO2_DELAY) / APPLOGO_FADE_DURATION);
+
+                // Verificar si fade out completado (cuando logo2 también termina)
+                if (fade_progress_logo2 >= 1.0f) {
                     // Fade out completado, volver a HIDDEN
                     state_ = AppLogoState::HIDDEN;
                     timer_ = 0.0f;
-                    current_alpha_ = 0;
+                    logo1_alpha_ = 0;
+                    logo2_alpha_ = 0;
                     // Resetear variables de ambos logos
                     logo1_scale_ = 1.0f;
                     logo1_squash_y_ = 1.0f;
@@ -244,94 +362,88 @@ void AppLogo::update(float delta_time, AppMode current_mode) {
                     logo2_stretch_x_ = 1.0f;
                     logo2_rotation_ = 0.0f;
                 } else {
-                    // Interpolar alpha linealmente (255 → 0) - compartido
-                    current_alpha_ = static_cast<int>((1.0f - fade_progress) * 255.0f);
+                    // Interpolar alpha con retraso + easing para suavidad (255 → 0)
+                    float eased_prog1 = easeInOutQuad(std::min(1.0f, fade_progress_logo1));
+                    float eased_prog2 = easeInOutQuad(std::min(1.0f, fade_progress_logo2));
+                    logo1_alpha_ = static_cast<int>((1.0f - eased_prog1) * 255.0f);
+                    logo2_alpha_ = static_cast<int>((1.0f - eased_prog2) * 255.0f);
 
                     // ================================================================
-                    // Aplicar animación de LOGO1 según logo1_exit_animation_
+                    // Aplicar MISMA animación (current_animation_) de forma invertida
                     // ================================================================
-                    switch (logo1_exit_animation_) {
+                    switch (current_animation_) {
                         case AppLogoAnimationType::ZOOM_ONLY:
-                            logo1_scale_ = 1.0f + (fade_progress * 0.2f);
+                            logo1_scale_ = 1.0f + (std::min(1.0f, fade_progress_logo1) * 0.2f);
                             logo1_squash_y_ = 1.0f;
                             logo1_stretch_x_ = 1.0f;
                             logo1_rotation_ = 0.0f;
+
+                            logo2_scale_ = 1.0f + (std::min(1.0f, fade_progress_logo2) * 0.2f);
+                            logo2_squash_y_ = 1.0f;
+                            logo2_stretch_x_ = 1.0f;
+                            logo2_rotation_ = 0.0f;
                             break;
 
                         case AppLogoAnimationType::ELASTIC_STICK:
-                            logo1_scale_ = 1.0f + (fade_progress * fade_progress * 0.2f);
-                            logo1_squash_y_ = 1.0f + (fade_progress * 0.3f);
-                            logo1_stretch_x_ = 1.0f - (fade_progress * 0.2f);
-                            logo1_rotation_ = fade_progress * 0.1f;
+                            {
+                                float prog1 = std::min(1.0f, fade_progress_logo1);
+                                logo1_scale_ = 1.0f + (prog1 * prog1 * 0.2f);
+                                logo1_squash_y_ = 1.0f + (prog1 * 0.3f);
+                                logo1_stretch_x_ = 1.0f - (prog1 * 0.2f);
+                                logo1_rotation_ = prog1 * 0.1f;
+
+                                float prog2 = std::min(1.0f, fade_progress_logo2);
+                                logo2_scale_ = 1.0f + (prog2 * prog2 * 0.2f);
+                                logo2_squash_y_ = 1.0f + (prog2 * 0.3f);
+                                logo2_stretch_x_ = 1.0f - (prog2 * 0.2f);
+                                logo2_rotation_ = prog2 * 0.1f;
+                            }
                             break;
 
                         case AppLogoAnimationType::ROTATE_SPIRAL:
                             {
-                                float ease_t = easeInOutQuad(fade_progress);
-                                logo1_scale_ = 1.0f - (ease_t * 0.7f);
-                                logo1_rotation_ = fade_progress * 6.28f;
+                                float prog1 = std::min(1.0f, fade_progress_logo1);
+                                float ease_t1 = easeInOutQuad(prog1);
+                                logo1_scale_ = 1.0f - (ease_t1 * 0.7f);
+                                logo1_rotation_ = prog1 * 6.28f;
                                 logo1_squash_y_ = 1.0f;
                                 logo1_stretch_x_ = 1.0f;
+
+                                float prog2 = std::min(1.0f, fade_progress_logo2);
+                                float ease_t2 = easeInOutQuad(prog2);
+                                logo2_scale_ = 1.0f - (ease_t2 * 0.7f);
+                                logo2_rotation_ = prog2 * 6.28f;
+                                logo2_squash_y_ = 1.0f;
+                                logo2_stretch_x_ = 1.0f;
                             }
                             break;
 
                         case AppLogoAnimationType::BOUNCE_SQUASH:
                             {
-                                if (fade_progress < 0.2f) {
-                                    float squash_t = fade_progress / 0.2f;
+                                float prog1 = std::min(1.0f, fade_progress_logo1);
+                                if (prog1 < 0.2f) {
+                                    float squash_t = prog1 / 0.2f;
                                     logo1_squash_y_ = 1.0f - (squash_t * 0.3f);
                                     logo1_stretch_x_ = 1.0f + (squash_t * 0.2f);
                                 } else {
-                                    float jump_t = (fade_progress - 0.2f) / 0.8f;
+                                    float jump_t = (prog1 - 0.2f) / 0.8f;
                                     logo1_squash_y_ = 0.7f + (jump_t * 0.5f);
                                     logo1_stretch_x_ = 1.2f - (jump_t * 0.2f);
                                 }
-                                logo1_scale_ = 1.0f + (fade_progress * 0.3f);
+                                logo1_scale_ = 1.0f + (prog1 * 0.3f);
                                 logo1_rotation_ = 0.0f;
-                            }
-                            break;
-                    }
 
-                    // ================================================================
-                    // Aplicar animación de LOGO2 según logo2_exit_animation_
-                    // ================================================================
-                    switch (logo2_exit_animation_) {
-                        case AppLogoAnimationType::ZOOM_ONLY:
-                            logo2_scale_ = 1.0f + (fade_progress * 0.2f);
-                            logo2_squash_y_ = 1.0f;
-                            logo2_stretch_x_ = 1.0f;
-                            logo2_rotation_ = 0.0f;
-                            break;
-
-                        case AppLogoAnimationType::ELASTIC_STICK:
-                            logo2_scale_ = 1.0f + (fade_progress * fade_progress * 0.2f);
-                            logo2_squash_y_ = 1.0f + (fade_progress * 0.3f);
-                            logo2_stretch_x_ = 1.0f - (fade_progress * 0.2f);
-                            logo2_rotation_ = fade_progress * 0.1f;
-                            break;
-
-                        case AppLogoAnimationType::ROTATE_SPIRAL:
-                            {
-                                float ease_t = easeInOutQuad(fade_progress);
-                                logo2_scale_ = 1.0f - (ease_t * 0.7f);
-                                logo2_rotation_ = fade_progress * 6.28f;
-                                logo2_squash_y_ = 1.0f;
-                                logo2_stretch_x_ = 1.0f;
-                            }
-                            break;
-
-                        case AppLogoAnimationType::BOUNCE_SQUASH:
-                            {
-                                if (fade_progress < 0.2f) {
-                                    float squash_t = fade_progress / 0.2f;
+                                float prog2 = std::min(1.0f, fade_progress_logo2);
+                                if (prog2 < 0.2f) {
+                                    float squash_t = prog2 / 0.2f;
                                     logo2_squash_y_ = 1.0f - (squash_t * 0.3f);
                                     logo2_stretch_x_ = 1.0f + (squash_t * 0.2f);
                                 } else {
-                                    float jump_t = (fade_progress - 0.2f) / 0.8f;
+                                    float jump_t = (prog2 - 0.2f) / 0.8f;
                                     logo2_squash_y_ = 0.7f + (jump_t * 0.5f);
                                     logo2_stretch_x_ = 1.2f - (jump_t * 0.2f);
                                 }
-                                logo2_scale_ = 1.0f + (fade_progress * 0.3f);
+                                logo2_scale_ = 1.0f + (prog2 * 0.3f);
                                 logo2_rotation_ = 0.0f;
                             }
                             break;
@@ -340,60 +452,14 @@ void AppLogo::update(float delta_time, AppMode current_mode) {
             }
             break;
     }
-
-    // Aplicar alpha a ambos logos (compartido - sincronizado)
-    if (logo1_texture_) {
-        logo1_texture_->setAlpha(current_alpha_);
-    }
-    if (logo2_texture_) {
-        logo2_texture_->setAlpha(current_alpha_);
-    }
-
-    // Aplicar escala animada INDEPENDIENTE a cada logo
-    if (logo1_sprite_) {
-        float scaled_width = base_width_ * logo1_scale_;
-        float scaled_height = base_height_ * logo1_scale_;
-        logo1_sprite_->setSize(scaled_width, scaled_height);
-    }
-
-    if (logo2_sprite_) {
-        float scaled_width = base_width_ * logo2_scale_;
-        float scaled_height = base_height_ * logo2_scale_;
-        logo2_sprite_->setSize(scaled_width, scaled_height);
-    }
-
-    // Recentrar ambos logos (están superpuestos, misma posición)
-    updateLogoPosition();
 }
 
 void AppLogo::render() {
     // Renderizar si NO está en estado HIDDEN (incluye FADE_IN, VISIBLE, FADE_OUT)
     if (state_ != AppLogoState::HIDDEN) {
-        // Determinar animaciones actuales para cada logo
-        AppLogoAnimationType logo1_anim = (state_ == AppLogoState::FADE_IN) ? logo1_entry_animation_ : logo1_exit_animation_;
-        AppLogoAnimationType logo2_anim = (state_ == AppLogoState::FADE_IN) ? logo2_entry_animation_ : logo2_exit_animation_;
-
-        // ====================================================================
-        // Renderizar LOGO1 primero (fondo)
-        // ====================================================================
-        if (logo1_anim != AppLogoAnimationType::ZOOM_ONLY) {
-            // Usar renderizado con geometría para deformaciones/rotación
+        // Renderizar LOGO1 primero (fondo), luego LOGO2 (encima)
         renderWithGeometry(1);
-        } else if (logo1_sprite_) {
-            // Usar renderizado simple con Sprite (solo ZOOM_ONLY)
-            logo1_sprite_->render();
-        }
-
-        // ====================================================================
-        // Renderizar LOGO2 después (encima de logo1)
-        // ====================================================================
-        if (logo2_anim != AppLogoAnimationType::ZOOM_ONLY) {
-            // Usar renderizado con geometría para deformaciones/rotación
         renderWithGeometry(2);
-        } else if (logo2_sprite_) {
-            // Usar renderizado simple con Sprite (solo ZOOM_ONLY)
-            logo2_sprite_->render();
-        }
     }
 }
 
@@ -401,59 +467,37 @@ void AppLogo::updateScreenSize(int screen_width, int screen_height) {
     screen_width_ = screen_width;
     screen_height_ = screen_height;
 
-    // Recalcular tamaño base para la nueva resolución (asumimos mismo tamaño para ambos logos)
-    if (logo1_sprite_ && logo1_texture_) {
-        float logo_width = static_cast<float>(logo1_texture_->getWidth());
-        float logo_height = static_cast<float>(logo1_texture_->getHeight());
+    // ========================================================================
+    // Detectar si coincide con resolución nativa o base, cambiar texturas
+    // ========================================================================
+    bool is_native = (screen_width == native_screen_width_ && screen_height == native_screen_height_);
 
-        // El logo debe tener una altura de APPLOGO_HEIGHT_PERCENT (40%) de la pantalla
-        float target_height = screen_height_ * APPLOGO_HEIGHT_PERCENT;
-        float scale = target_height / logo_height;
+    if (is_native) {
+        // Cambiar a texturas nativas (F4 fullscreen)
+        logo1_current_texture_ = logo1_native_texture_;
+        logo1_current_width_ = logo1_native_width_;
+        logo1_current_height_ = logo1_native_height_;
 
-        // Recalcular tamaño base
-        base_width_ = logo_width * scale;
-        base_height_ = target_height;  // = logo_height * scale
+        logo2_current_texture_ = logo2_native_texture_;
+        logo2_current_width_ = logo2_native_width_;
+        logo2_current_height_ = logo2_native_height_;
 
-        // Aplicar escala actual a AMBOS logos (respeta la animación en curso)
-        if (logo1_sprite_) {
-            float scaled_width = base_width_ * logo1_scale_;
-            float scaled_height = base_height_ * logo1_scale_;
-            logo1_sprite_->setSize(scaled_width, scaled_height);
+        std::cout << "AppLogo: Cambiado a texturas NATIVAS" << std::endl;
+    } else {
+        // Cambiar a texturas base (ventana redimensionable)
+        logo1_current_texture_ = logo1_base_texture_;
+        logo1_current_width_ = logo1_base_width_;
+        logo1_current_height_ = logo1_base_height_;
+
+        logo2_current_texture_ = logo2_base_texture_;
+        logo2_current_width_ = logo2_base_width_;
+        logo2_current_height_ = logo2_base_height_;
+
+        std::cout << "AppLogo: Cambiado a texturas BASE" << std::endl;
     }
 
-        if (logo2_sprite_) {
-            float scaled_width = base_width_ * logo2_scale_;
-            float scaled_height = base_height_ * logo2_scale_;
-            logo2_sprite_->setSize(scaled_width, scaled_height);
-        }
-
-        // Reposicionar ambos logos
-        updateLogoPosition();
-    }
-}
-
-void AppLogo::updateLogoPosition() {
-    // Calcular padding desde bordes derecho e inferior
-    float padding_x = screen_width_ * APPLOGO_PADDING_PERCENT;
-    float padding_y = screen_height_ * APPLOGO_PADDING_PERCENT;
-
-    // Posicionar LOGO1 (anclado a esquina inferior derecha con padding)
-    if (logo1_sprite_) {
-        float logo1_width = base_width_ * logo1_scale_;
-        float logo1_height = base_height_ * logo1_scale_;
-        float pos_x = screen_width_ - logo1_width - padding_x;
-        float pos_y = screen_height_ - logo1_height - padding_y;
-        logo1_sprite_->setPos({pos_x, pos_y});
-    }
-
-    // Posicionar LOGO2 (anclado a esquina inferior derecha con padding, superpuesto a logo1)
-    if (logo2_sprite_) {
-        float logo2_width = base_width_ * logo2_scale_;
-        float logo2_height = base_height_ * logo2_scale_;
-        float pos_x = screen_width_ - logo2_width - padding_x;
-        float pos_y = screen_height_ - logo2_height - padding_y;
-        logo2_sprite_->setPos({pos_x, pos_y});
-    }
+    // Nota: No es necesario recalcular escalas porque las texturas están pre-escaladas
+    // al tamaño exacto de pantalla. Solo renderizamos al 100% (o con deformaciones de animación).
 }
 
 // ============================================================================
@@ -528,26 +572,31 @@ AppLogoAnimationType AppLogo::getRandomAnimation() {
 }
 
 // ============================================================================
-// Renderizado con geometría deformada (para animación ELASTIC_STICK)
+// Renderizado con geometría (para todos los logos, con deformaciones)
 // ============================================================================
 
 void AppLogo::renderWithGeometry(int logo_index) {
     if (!renderer_) return;
 
     // Seleccionar variables según el logo_index (1 = logo1, 2 = logo2)
-    std::shared_ptr<Texture> texture;
+    SDL_Texture* texture;
+    int base_width, base_height;
     float scale, squash_y, stretch_x, rotation;
 
     if (logo_index == 1) {
-        if (!logo1_texture_) return;
-        texture = logo1_texture_;
+        if (!logo1_current_texture_) return;
+        texture = logo1_current_texture_;
+        base_width = logo1_current_width_;
+        base_height = logo1_current_height_;
         scale = logo1_scale_;
         squash_y = logo1_squash_y_;
         stretch_x = logo1_stretch_x_;
         rotation = logo1_rotation_;
     } else if (logo_index == 2) {
-        if (!logo2_texture_) return;
-        texture = logo2_texture_;
+        if (!logo2_current_texture_) return;
+        texture = logo2_current_texture_;
+        base_width = logo2_current_width_;
+        base_height = logo2_current_height_;
         scale = logo2_scale_;
         squash_y = logo2_squash_y_;
         stretch_x = logo2_stretch_x_;
@@ -556,9 +605,14 @@ void AppLogo::renderWithGeometry(int logo_index) {
         return;  // Índice inválido
     }
 
+    // Aplicar alpha específico de cada logo (con retraso para logo2)
+    int alpha = (logo_index == 1) ? logo1_alpha_ : logo2_alpha_;
+    SDL_SetTextureAlphaMod(texture, static_cast<Uint8>(alpha));
+
     // Calcular tamaño con escala y deformaciones aplicadas
-    float width = base_width_ * scale * stretch_x;
-    float height = base_height_ * scale * squash_y;
+    // (base_width y base_height ya están pre-escalados al tamaño correcto de pantalla)
+    float width = base_width * scale * stretch_x;
+    float height = base_height * scale * squash_y;
 
     // Calcular padding desde bordes derecho e inferior
     float padding_x = screen_width_ * APPLOGO_PADDING_PERCENT;
@@ -631,5 +685,5 @@ void AppLogo::renderWithGeometry(int logo_index) {
     int indices[6] = {0, 1, 2, 2, 3, 0};
 
     // Renderizar con la textura del logo correspondiente
-    SDL_RenderGeometry(renderer_, texture->getSDLTexture(), vertices, 4, indices, 6);
+    SDL_RenderGeometry(renderer_, texture, vertices, 4, indices, 6);
 }

source/app_logo.h

@@ -28,7 +28,7 @@ enum class AppLogoAnimationType {
 class AppLogo {
     public:
         AppLogo() = default;
-        ~AppLogo() = default;
+        ~AppLogo();  // Necesario para liberar las 4 texturas SDL
 
         // Inicializar textura y sprite del logo
         bool initialize(SDL_Renderer* renderer, int screen_width, int screen_height);
@@ -43,22 +43,42 @@ class AppLogo {
         void updateScreenSize(int screen_width, int screen_height);
 
     private:
-        // Texturas y sprites (x2 - logo1 y logo2 superpuestos)
-        std::shared_ptr<Texture> logo1_texture_;  // Textura del logo1 (data/logo/logo.png)
-        std::unique_ptr<Sprite> logo1_sprite_;    // Sprite para renderizar logo1
-        std::shared_ptr<Texture> logo2_texture_;  // Textura del logo2 (data/logo/logo2.png)
-        std::unique_ptr<Sprite> logo2_sprite_;    // Sprite para renderizar logo2
+        // ====================================================================
+        // Texturas pre-escaladas (4 texturas: 2 logos × 2 resoluciones)
+        // ====================================================================
+        SDL_Texture* logo1_base_texture_ = nullptr;     // Logo1 para resolución base
+        SDL_Texture* logo1_native_texture_ = nullptr;   // Logo1 para resolución nativa (F4)
+        SDL_Texture* logo2_base_texture_ = nullptr;     // Logo2 para resolución base
+        SDL_Texture* logo2_native_texture_ = nullptr;   // Logo2 para resolución nativa (F4)
 
+        // Dimensiones pre-calculadas para cada textura
+        int logo1_base_width_ = 0, logo1_base_height_ = 0;
+        int logo1_native_width_ = 0, logo1_native_height_ = 0;
+        int logo2_base_width_ = 0, logo2_base_height_ = 0;
+        int logo2_native_width_ = 0, logo2_native_height_ = 0;
+
+        // Texturas actualmente en uso (apuntan a base o native según resolución)
+        SDL_Texture* logo1_current_texture_ = nullptr;
+        SDL_Texture* logo2_current_texture_ = nullptr;
+        int logo1_current_width_ = 0, logo1_current_height_ = 0;
+        int logo2_current_width_ = 0, logo2_current_height_ = 0;
+
+        // Resoluciones conocidas
+        int base_screen_width_ = 0, base_screen_height_ = 0;       // Resolución inicial
+        int native_screen_width_ = 0, native_screen_height_ = 0;   // Resolución nativa (F4)
+
+        // ====================================================================
         // Variables COMPARTIDAS (sincronización de ambos logos)
+        // ====================================================================
         AppLogoState state_ = AppLogoState::HIDDEN;  // Estado actual de la máquina de estados
         float timer_ = 0.0f;                         // Contador de tiempo para estado actual
-        int current_alpha_ = 0;                      // Alpha actual (0-255)
 
-        // Animaciones INDEPENDIENTES para cada logo
-        AppLogoAnimationType logo1_entry_animation_ = AppLogoAnimationType::ZOOM_ONLY;
-        AppLogoAnimationType logo1_exit_animation_ = AppLogoAnimationType::ZOOM_ONLY;
-        AppLogoAnimationType logo2_entry_animation_ = AppLogoAnimationType::ZOOM_ONLY;
-        AppLogoAnimationType logo2_exit_animation_ = AppLogoAnimationType::ZOOM_ONLY;
+        // Alpha INDEPENDIENTE para cada logo (Logo 2 con retraso)
+        int logo1_alpha_ = 0;                        // Alpha de Logo 1 (0-255)
+        int logo2_alpha_ = 0;                        // Alpha de Logo 2 (0-255, con retraso)
+
+        // Animación COMPARTIDA (misma para ambos logos, misma entrada y salida)
+        AppLogoAnimationType current_animation_ = AppLogoAnimationType::ZOOM_ONLY;
 
         // Variables de deformación INDEPENDIENTES para logo1
         float logo1_scale_ = 1.0f;      // Escala actual de logo1 (1.0 = 100%)

source/defines.h

@@ -294,6 +294,7 @@ constexpr float APPLOGO_DISPLAY_DURATION = 5.0f;    // Duración de visibilidad
 constexpr float APPLOGO_FADE_DURATION = 0.5f;       // Duración del fade in/out (segundos)
 constexpr float APPLOGO_HEIGHT_PERCENT = 0.4f;      // Altura del logo = 40% de la altura de pantalla
 constexpr float APPLOGO_PADDING_PERCENT = 0.1f;     // Padding desde esquina inferior-derecha = 10%
+constexpr float APPLOGO_LOGO2_DELAY = 0.25f;        // Retraso de Logo 2 respecto a Logo 1 (segundos)
 
 // Configuración de Modo BOIDS (comportamiento de enjambre)
 // TIME-BASED CONVERSION (frame-based → time-based):

source/logo_scaler.cpp

@@ -0,0 +1,144 @@
+#define STB_IMAGE_RESIZE_IMPLEMENTATION
+#include "logo_scaler.h"
+
+#include <SDL3/SDL_error.h>     // Para SDL_GetError
+#include <SDL3/SDL_log.h>       // Para SDL_Log
+#include <SDL3/SDL_pixels.h>    // Para SDL_PixelFormat
+#include <SDL3/SDL_render.h>    // Para SDL_CreateTexture
+#include <SDL3/SDL_surface.h>   // Para SDL_CreateSurfaceFrom
+#include <SDL3/SDL_video.h>     // Para SDL_GetDisplays
+
+#include <cstdlib>   // Para free()
+#include <iostream>  // Para std::cout
+
+#include "external/stb_image.h"          // Para stbi_load, stbi_image_free
+#include "external/stb_image_resize2.h"  // Para stbir_resize_uint8_srgb
+
+// ============================================================================
+// Detectar resolución nativa del monitor principal
+// ============================================================================
+
+bool LogoScaler::detectNativeResolution(int& native_width, int& native_height) {
+    int num_displays = 0;
+    SDL_DisplayID* displays = SDL_GetDisplays(&num_displays);
+
+    if (displays == nullptr || num_displays == 0) {
+        SDL_Log("Error al obtener displays: %s", SDL_GetError());
+        return false;
+    }
+
+    // Obtener resolución del display principal (displays[0])
+    const auto* dm = SDL_GetCurrentDisplayMode(displays[0]);
+    if (dm == nullptr) {
+        SDL_Log("Error al obtener modo del display: %s", SDL_GetError());
+        SDL_free(displays);
+        return false;
+    }
+
+    native_width = dm->w;
+    native_height = dm->h;
+
+    SDL_free(displays);
+
+    std::cout << "Resolución nativa detectada: " << native_width << "x" << native_height << std::endl;
+    return true;
+}
+
+// ============================================================================
+// Cargar PNG y escalar al tamaño especificado
+// ============================================================================
+
+unsigned char* LogoScaler::loadAndScale(const std::string& path,
+                                        int target_width, int target_height,
+                                        int& out_width, int& out_height) {
+    // 1. Cargar imagen original con stb_image
+    int orig_width, orig_height, orig_channels;
+    unsigned char* orig_data = stbi_load(path.c_str(), &orig_width, &orig_height, &orig_channels, STBI_rgb_alpha);
+
+    if (orig_data == nullptr) {
+        SDL_Log("Error al cargar imagen %s: %s", path.c_str(), stbi_failure_reason());
+        return nullptr;
+    }
+
+    std::cout << "Imagen cargada: " << path << " (" << orig_width << "x" << orig_height << ")" << std::endl;
+
+    // 2. Calcular tamaño final manteniendo aspect ratio
+    // El alto está fijado por target_height (APPLOGO_HEIGHT_PERCENT)
+    // Calcular ancho proporcional al aspect ratio original
+    float aspect_ratio = static_cast<float>(orig_width) / static_cast<float>(orig_height);
+    out_width = static_cast<int>(target_height * aspect_ratio);
+    out_height = target_height;
+
+    std::cout << "  Escalando a: " << out_width << "x" << out_height << std::endl;
+
+    // 3. Alocar buffer para imagen escalada (RGBA = 4 bytes por píxel)
+    unsigned char* scaled_data = static_cast<unsigned char*>(malloc(out_width * out_height * 4));
+    if (scaled_data == nullptr) {
+        SDL_Log("Error al alocar memoria para imagen escalada");
+        stbi_image_free(orig_data);
+        return nullptr;
+    }
+
+    // 4. Escalar con stb_image_resize2 (algoritmo Mitchell, espacio sRGB)
+    // La función devuelve el puntero de salida, o nullptr si falla
+    unsigned char* result = stbir_resize_uint8_srgb(
+        orig_data, orig_width, orig_height, 0,           // Input
+        scaled_data, out_width, out_height, 0,           // Output
+        STBIR_RGBA                                       // Formato píxel
+    );
+
+    // Liberar imagen original (ya no la necesitamos)
+    stbi_image_free(orig_data);
+
+    if (result == nullptr) {
+        SDL_Log("Error al escalar imagen");
+        free(scaled_data);
+        return nullptr;
+    }
+
+    std::cout << "  Escalado completado correctamente" << std::endl;
+    return scaled_data;
+}
+
+// ============================================================================
+// Crear textura SDL desde buffer RGBA
+// ============================================================================
+
+SDL_Texture* LogoScaler::createTextureFromBuffer(SDL_Renderer* renderer,
+                                                 unsigned char* data,
+                                                 int width, int height) {
+    if (renderer == nullptr || data == nullptr || width <= 0 || height <= 0) {
+        SDL_Log("Parámetros inválidos para createTextureFromBuffer");
+        return nullptr;
+    }
+
+    // 1. Crear surface SDL desde buffer RGBA
+    int pitch = width * 4;  // 4 bytes por píxel (RGBA)
+    SDL_PixelFormat pixel_format = SDL_PIXELFORMAT_RGBA32;
+
+    SDL_Surface* surface = SDL_CreateSurfaceFrom(
+        width, height,
+        pixel_format,
+        data,
+        pitch
+    );
+
+    if (surface == nullptr) {
+        SDL_Log("Error al crear surface: %s", SDL_GetError());
+        return nullptr;
+    }
+
+    // 2. Crear textura desde surface
+    SDL_Texture* texture = SDL_CreateTextureFromSurface(renderer, surface);
+
+    if (texture == nullptr) {
+        SDL_Log("Error al crear textura: %s", SDL_GetError());
+        SDL_DestroySurface(surface);
+        return nullptr;
+    }
+
+    // 3. Liberar surface (la textura ya tiene los datos)
+    SDL_DestroySurface(surface);
+
+    return texture;
+}

source/logo_scaler.h

@@ -0,0 +1,61 @@
+#pragma once
+
+#include <SDL3/SDL_render.h>  // Para SDL_Renderer, SDL_Texture
+#include <SDL3/SDL_video.h>   // Para SDL_DisplayID, SDL_GetDisplays
+
+#include <string>  // Para std::string
+
+/**
+ * @brief Helper class para pre-escalar logos usando stb_image_resize2
+ *
+ * Proporciona funciones para:
+ * - Detectar resolución nativa del monitor
+ * - Cargar PNG y escalar a tamaño específico con algoritmos de alta calidad
+ * - Crear texturas SDL desde buffers escalados
+ *
+ * Usado por AppLogo para pre-generar versiones de logos al tamaño exacto
+ * de pantalla, eliminando el escalado dinámico de SDL y mejorando calidad visual.
+ */
+class LogoScaler {
+public:
+    /**
+     * @brief Detecta la resolución nativa del monitor principal
+     *
+     * @param native_width [out] Ancho nativo del display en píxeles
+     * @param native_height [out] Alto nativo del display en píxeles
+     * @return true si se pudo detectar, false si hubo error
+     */
+    static bool detectNativeResolution(int& native_width, int& native_height);
+
+    /**
+     * @brief Carga un PNG y lo escala al tamaño especificado
+     *
+     * Usa stb_image para cargar y stb_image_resize2 para escalar con
+     * algoritmo Mitchell (balance calidad/velocidad) en espacio sRGB.
+     *
+     * @param path Ruta al archivo PNG (ej: "data/logo/logo.png")
+     * @param target_width Ancho destino en píxeles
+     * @param target_height Alto destino en píxeles
+     * @param out_width [out] Ancho real de la imagen escalada
+     * @param out_height [out] Alto real de la imagen escalada
+     * @return Buffer RGBA (4 bytes por píxel) o nullptr si falla
+     *         IMPORTANTE: El caller debe liberar con free() cuando termine
+     */
+    static unsigned char* loadAndScale(const std::string& path,
+                                       int target_width, int target_height,
+                                       int& out_width, int& out_height);
+
+    /**
+     * @brief Crea una textura SDL desde un buffer RGBA
+     *
+     * @param renderer Renderizador SDL activo
+     * @param data Buffer RGBA (4 bytes por píxel)
+     * @param width Ancho del buffer en píxeles
+     * @param height Alto del buffer en píxeles
+     * @return Textura SDL creada o nullptr si falla
+     *         IMPORTANTE: El caller debe destruir con SDL_DestroyTexture()
+     */
+    static SDL_Texture* createTextureFromBuffer(SDL_Renderer* renderer,
+                                                unsigned char* data,
+                                                int width, int height);
+};