diff --git a/source/core/config/postfx_config.cpp b/source/core/config/postfx_config.cpp
index c83bde7..7f727a7 100644
--- a/source/core/config/postfx_config.cpp
+++ b/source/core/config/postfx_config.cpp
@@ -40,8 +40,10 @@ void readRgb255(const fkyaml::node& node, const char* key,
         dst_r = static_cast<float>(R) / 255.0F;
         dst_g = static_cast<float>(G) / 255.0F;
         dst_b = static_cast<float>(B) / 255.0F;
-    } catch (...) {
-        // Mantiene los defaults si algún elemento no es entero.
+    } catch (...) {  // @INTENTIONAL
+        // Mantiene los defaults si algún elemento del RGB no es entero parseable
+        // (el YAML viene de archivo, así que es razonable degradar a los defaults
+        // en vez de propagar la excepción y abortar el load del postpro entero).
     }
 }
 
diff --git a/source/core/graphics/shape.hpp b/source/core/graphics/shape.hpp
index aab6f5b..2dcc5ae 100644
--- a/source/core/graphics/shape.hpp
+++ b/source/core/graphics/shape.hpp
@@ -3,6 +3,7 @@
 
 #pragma once
 
+#include <cstdint>
 #include <string>
 #include <vector>
 
@@ -11,7 +12,7 @@
 namespace Graphics {
 
 // Tipo de primitiva dins de una shape
-enum class PrimitiveType {
+enum class PrimitiveType : std::uint8_t {
     POLYLINE,  // Secuencia de points connectats
     LINE       // Línia individual (2 points)
 };
diff --git a/source/core/graphics/starfield.cpp b/source/core/graphics/starfield.cpp
index 4a79eef..09b0d69 100644
--- a/source/core/graphics/starfield.cpp
+++ b/source/core/graphics/starfield.cpp
@@ -21,8 +21,7 @@ Starfield::Starfield(Rendering::Renderer* renderer,
     : shape_estrella_(ShapeLoader::load("star.shp")),
       renderer_(renderer),
       punt_fuga_(punt_fuga),
-      area_(area),
-      densitat_(densitat) {
+      area_(area) {
     if (!shape_estrella_ || !shape_estrella_->isValid()) {
         std::cerr << "ERROR: No s'ha pogut load star.shp" << '\n';
         return;
diff --git a/source/core/graphics/starfield.hpp b/source/core/graphics/starfield.hpp
index 4814f5d..2a7fab7 100644
--- a/source/core/graphics/starfield.hpp
+++ b/source/core/graphics/starfield.hpp
@@ -77,7 +77,6 @@ class Starfield {
         Vec2 punt_fuga_;                        // Vec2 de origin de las estrelles
         SDL_FRect area_;                        // Àrea activa
         float radi_max_;                        // Distancia màxima del centro al límit de pantalla
-        int densitat_;                          // Nombre total de estrelles
         float multiplicador_brightness_{1.0F};  // Multiplicador de brightness (1.0 = default)
 };
 
diff --git a/source/core/graphics/vector_text.cpp b/source/core/graphics/vector_text.cpp
index b9701f6..b494bfa 100644
--- a/source/core/graphics/vector_text.cpp
+++ b/source/core/graphics/vector_text.cpp
@@ -80,7 +80,9 @@ void VectorText::load_charset() {
 }
 
 auto VectorText::get_shape_filename(char c) const -> std::string {
-    // Mapeo carácter → nombre de archivo (con prefix "font/")
+    // Mapeo carácter → nombre de archivo (con prefix "font/").
+    // Dígitos 0-9 y mayúsculas A-Z comparten el mismo path: la shape se llama
+    // como el caracter mismo, así que se agrupan en un único case.
     switch (c) {
         case '0':
         case '1':
@@ -92,9 +94,6 @@ auto VectorText::get_shape_filename(char c) const -> std::string {
         case '7':
         case '8':
         case '9':
-            return std::string("font/char_") + c + ".shp";
-
-        // Lletres majúscules A-Z
         case 'A':
         case 'B':
         case 'C':
diff --git a/source/core/input/input.cpp b/source/core/input/input.cpp
index 7ed92f1..886e3b3 100644
--- a/source/core/input/input.cpp
+++ b/source/core/input/input.cpp
@@ -420,8 +420,11 @@ auto Input::handleEvent(const SDL_Event& event) -> std::string {
             return addGamepad(event.gdevice.which);
         case SDL_EVENT_GAMEPAD_REMOVED:
             return removeGamepad(event.gdevice.which);
+        default:
+            // El resto de eventos SDL no interesan a Input (los maneja el resto
+            // del sistema: ventana, teclado, mouse).
+            return {};
     }
-    return {};
 }
 
 auto Input::addGamepad(int device_index) -> std::string {
diff --git a/source/core/input/input_types.hpp b/source/core/input/input_types.hpp
index c032638..92f7a0f 100644
--- a/source/core/input/input_types.hpp
+++ b/source/core/input/input_types.hpp
@@ -3,11 +3,12 @@
 #include <SDL3/SDL.h>
 
 #include <array>
+#include <cstdint>
 #include <string>
 #include <unordered_map>
 
 // --- Enums ---
-enum class InputAction : int {  // Acciones de entrada posibles en el juego
+enum class InputAction : std::uint8_t {  // Acciones de entrada posibles en el juego
     // Inputs de juego (movimiento y acción)
     LEFT,    // Rotar izquierda
     RIGHT,   // Rotar derecha
diff --git a/source/core/system/game_config.hpp b/source/core/system/game_config.hpp
index 42d55d0..9ee3562 100644
--- a/source/core/system/game_config.hpp
+++ b/source/core/system/game_config.hpp
@@ -5,7 +5,7 @@
 namespace GameConfig {
 
 // Mode de juego
-enum class Mode {
+enum class Mode : std::uint8_t {
     NORMAL,  // Partida normal
     DEMO     // Mode demostració (futur)
 };
diff --git a/source/core/system/scene_context.hpp b/source/core/system/scene_context.hpp
index 3705794..bd466e3 100644
--- a/source/core/system/scene_context.hpp
+++ b/source/core/system/scene_context.hpp
@@ -3,6 +3,8 @@
 
 #pragma once
 
+#include <cstdint>
+
 #include "core/system/game_config.hpp"
 
 namespace SceneManager {
@@ -12,7 +14,7 @@ namespace SceneManager {
 class SceneContext {
     public:
         // Tipo de escena del juego
-        enum class SceneType {
+        enum class SceneType : std::uint8_t {
             LOGO,   // Pantalla de start (logo JAILGAMES)
             TITLE,  // Pantalla de título con menú
             GAME,    // Juego principal (Asteroids)
@@ -20,7 +22,7 @@ class SceneContext {
         };
 
         // Opciones específiques para cada escena
-        enum class Option {
+        enum class Option : std::uint8_t {
             NONE,                // Sin opciones especials (comportament per defecte)
             JUMP_TO_TITLE_MAIN,  // TITLE: Saltar directament a MAIN (starfield instantani)
             // MODE_DEMO,           // GAME: Mode demostració con IA (futur)
diff --git a/source/game/scenes/game_scene.hpp b/source/game/scenes/game_scene.hpp
index 387406a..d5b82c6 100644
--- a/source/game/scenes/game_scene.hpp
+++ b/source/game/scenes/game_scene.hpp
@@ -61,7 +61,9 @@ class GameScene final : public Scene {
         // Estat del juego
         std::array<Ship, 2> ships_;  // [0]=P1, [1]=P2
         std::array<Enemy, Constants::MAX_ORNIS> enemies_;
-        std::array<Bullet, Constants::MAX_BALES * 2> bullets_;  // 6 balas: P1=[0,1,2], P2=[3,4,5]
+        // 6 balas: P1=[0,1,2], P2=[3,4,5]. El cast a size_t evita la
+        // widening conversion implícita que detecta clang-tidy.
+        std::array<Bullet, static_cast<std::size_t>(Constants::MAX_BALES) * 2> bullets_;
         std::array<float, 2> hit_timer_per_player_;  // Death timers per player (seconds)
 
         // Lives and game over system
diff --git a/source/game/scenes/logo_scene.hpp b/source/game/scenes/logo_scene.hpp
index a779f6b..929911e 100644
--- a/source/game/scenes/logo_scene.hpp
+++ b/source/game/scenes/logo_scene.hpp
@@ -7,6 +7,7 @@
 #include <SDL3/SDL.h>
 
 #include <array>
+#include <cstdint>
 #include <memory>
 #include <vector>
 
@@ -32,7 +33,7 @@ class LogoScene final : public Scene {
 
     private:
         // Màquina de estats per l'animación
-        enum class AnimationState {
+        enum class AnimationState : std::uint8_t {
             PRE_ANIMATION,   // Pantalla negra inicial
             ANIMATION,       // Animación de zoom de lletres
             POST_ANIMATION,  // Logo complet visible
diff --git a/source/game/scenes/title_scene.hpp b/source/game/scenes/title_scene.hpp
index b021e72..1d70eb0 100644
--- a/source/game/scenes/title_scene.hpp
+++ b/source/game/scenes/title_scene.hpp
@@ -7,6 +7,7 @@
 #include <SDL3/SDL.h>
 
 #include <array>
+#include <cstdint>
 #include <memory>
 #include <vector>
 
@@ -39,7 +40,7 @@ class TitleScene final : public Scene {
 
     private:
         // Màquina de estats per la pantalla de título
-        enum class TitleState {
+        enum class TitleState : std::uint8_t {
             STARFIELD_FADE_IN,  // Fade-in del starfield (3.0s)
             STARFIELD,          // Pantalla con camp de estrelles (4.0s)
             MAIN,               // Pantalla de título con text (indefinit, hasta START)
diff --git a/source/game/stage_system/spawn_controller.cpp b/source/game/stage_system/spawn_controller.cpp
index 187972f..97e03d9 100644
--- a/source/game/stage_system/spawn_controller.cpp
+++ b/source/game/stage_system/spawn_controller.cpp
@@ -15,9 +15,7 @@
 
 namespace StageSystem {
 
-SpawnController::SpawnController()
-    
-      {}
+SpawnController::SpawnController() = default;
 
 void SpawnController::configure(const StageConfig* config) {
     config_ = config;
diff --git a/source/game/stage_system/stage_config.hpp b/source/game/stage_system/stage_config.hpp
index c51f732..a170f61 100644
--- a/source/game/stage_system/stage_config.hpp
+++ b/source/game/stage_system/stage_config.hpp
@@ -11,7 +11,7 @@
 namespace StageSystem {
 
 // Tipo de mode de spawn
-enum class ModeSpawn {
+enum class ModeSpawn : std::uint8_t {
     PROGRESSIVE,  // Spawn progressiu con intervals
     IMMEDIATE,    // Todos los enemigos de cop
     WAVE          // Onades de 3-5 enemigos (futura extensió)
diff --git a/source/game/systems/collision_system.hpp b/source/game/systems/collision_system.hpp
index 61e8545..a7ef980 100644
--- a/source/game/systems/collision_system.hpp
+++ b/source/game/systems/collision_system.hpp
@@ -31,7 +31,7 @@ namespace Systems::Collision {
 struct Context {
         std::array<Ship, 2>& ships;
         std::array<Enemy, Defaults::Entities::MAX_ORNIS>& enemies;
-        std::array<Bullet, Defaults::Entities::MAX_BALES * 2>& bullets;
+        std::array<Bullet, static_cast<std::size_t>(Defaults::Entities::MAX_BALES) * 2>& bullets;
         std::array<float, 2>& hit_timer_per_player;
         std::array<int, 2>& score_per_player;
         std::array<int, 2>& lives_per_player;
diff --git a/source/game/title/ship_animator.hpp b/source/game/title/ship_animator.hpp
index 898d079..6ebc769 100644
--- a/source/game/title/ship_animator.hpp
+++ b/source/game/title/ship_animator.hpp
@@ -8,6 +8,7 @@
 #include <SDL3/SDL.h>
 
 #include <array>
+#include <cstdint>
 #include <memory>
 
 #include "core/graphics/shape.hpp"
@@ -16,7 +17,7 @@
 namespace Title {
 
 // Estats de l'animación de la ship
-enum class ShipState {
+enum class ShipState : std::uint8_t {
     ENTERING,  // Entrant desde fuera de pantalla
     FLOATING,  // Flotante en posición estàtica
     EXITING    // Volant hacia el point de fuga