diff --git a/cambios.md b/cambios.md
index 846ede9..8cdfc73 100644
--- a/cambios.md
+++ b/cambios.md
@@ -1,15 +1,19 @@
-# v5.0!!!
+# v5.1
 
 ## novedades
 
 ### adiciones
 
-- panel individual para cada categoría de módulos
-
 #### módulos nuevos:
 
 ### arreglos / mejoras
 
+- añadido el grupo de ajustes `módulo` para distinguir los ajustes individuales de cada módulo con los comunes; 
+y añadido la opción de notificar el alternado de estado de un módulo mediante widgets de notificaciones 
+- varios arreglos relacionados con la config.
+- cambiado `manos` de categoría: de "jugador" a "renderizado"
+- `don quijote` ya funciona correctamente, en cuanto a los amigos
+
 ## problemas reconocidos
 
 - lo de siempre.
\ No newline at end of file
diff --git a/gradle.properties b/gradle.properties
index ee87144..f114fa8 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -10,6 +10,6 @@ discord_rpc_version=1.0.3
 neutrino_version=1.1.0
 jdk_version=25
 
-mod_version=5.0
+mod_version=5.1
 maven_group=me.retucio
 archives_base_name=sputnik
\ No newline at end of file
diff --git a/src/main/java/me/retucio/sputnik/Sputnik.java b/src/main/java/me/retucio/sputnik/Sputnik.java
index c3005d7..839fafe 100644
--- a/src/main/java/me/retucio/sputnik/Sputnik.java
+++ b/src/main/java/me/retucio/sputnik/Sputnik.java
@@ -24,7 +24,6 @@ import me.retucio.sputnik.ui.screen.UpdateScreen;
 import me.retucio.sputnik.ui.widgets.buttons.settings.BindButton;
 import me.retucio.sputnik.ui.widgets.buttons.SettingButton;
 import me.retucio.sputnik.ui.widgets.buttons.settings.TextButton;
-import me.retucio.sputnik.ui.widgets.misc.NotificationWidget;
 import me.retucio.sputnik.ui.widgets.panels.settings.ClientSettingsPanel;
 import me.retucio.sputnik.ui.widgets.panels.SettingsPanel;
 import me.retucio.sputnik.ui.widgets.Button;
@@ -56,8 +55,9 @@ import org.lwjgl.glfw.GLFW;
 
 public class Sputnik implements ClientModInitializer {
 
-    // cosas necesarias
     public static final Sputnik INSTANCE = new Sputnik();
+
+    // cosas del mod
     public static final EventBus EVENT_BUS = new EventBus();
     public static final Logger LOGGER = LogManager.getLogger(Sputnik.class);
     public static final long LAUNCH_TIME = System.currentTimeMillis();
@@ -85,7 +85,7 @@ public class Sputnik implements ClientModInitializer {
         mc = Minecraft.getInstance();
         ConfigManager.load();
 
-        VersionChecker.check();
+        VersionChecker.INSTANCE.check();
 
         EVENT_BUS.subscribe(this);
 
@@ -250,9 +250,9 @@ public class Sputnik implements ClientModInitializer {
     @EventListener
     // notificar al usuario de que hay una actualización disponible, si la hay
     public void onSetScreen(OpenScreenEvent event) {
-        if (VersionChecker.shouldShowScreen && event.getScreen() instanceof TitleScreen) {
+        if (VersionChecker.INSTANCE.shouldShowScreen && event.getScreen() instanceof TitleScreen) {
             event.cancel();
-            VersionChecker.shouldShowScreen = false;
+            VersionChecker.INSTANCE.shouldShowScreen = false;
             mc.execute(() -> mc.screen = new UpdateScreen());
         }
     }
diff --git a/src/main/java/me/retucio/sputnik/config/ClientConfig.java b/src/main/java/me/retucio/sputnik/config/ClientConfig.java
index b222173..59a4d96 100644
--- a/src/main/java/me/retucio/sputnik/config/ClientConfig.java
+++ b/src/main/java/me/retucio/sputnik/config/ClientConfig.java
@@ -100,7 +100,7 @@ public class ClientConfig {
         extendablePanels.put(event.getPanel().category.toString(), new PanelData(
                 event.getPanel().getX(),
                 event.getPanel().getY(),
-                event.getPanel().extended));
+                event.getPanel().isExtended()));
         ConfigManager.save();
     }
 
@@ -109,7 +109,7 @@ public class ClientConfig {
         extendablePanels.replace(event.getPanel().category.toString(), new PanelData(
                 event.getPanel().getX(),
                 event.getPanel().getY(),
-                event.getPanel().extended));
+                event.getPanel().isExtended()));
         ConfigManager.save();
     }
 
@@ -118,7 +118,7 @@ public class ClientConfig {
         extendablePanels.put("ajustes", new PanelData(
                 ClickGui.INSTANCE.getClientSettingsPanel().getX(),
                 ClickGui.INSTANCE.getClientSettingsPanel().getY(),
-                ClickGui.INSTANCE.getClientSettingsPanel().extended));
+                ClickGui.INSTANCE.getClientSettingsPanel().isExtended()));
         ConfigManager.save();
     }
 
@@ -127,7 +127,7 @@ public class ClientConfig {
         extendablePanels.replace("ajustes", new PanelData(
                 ClickGui.INSTANCE.getClientSettingsPanel().getX(),
                 ClickGui.INSTANCE.getClientSettingsPanel().getY(),
-                ClickGui.INSTANCE.getClientSettingsPanel().extended));
+                ClickGui.INSTANCE.getClientSettingsPanel().isExtended()));
         ConfigManager.save();
     }
 
@@ -136,7 +136,7 @@ public class ClientConfig {
         extendablePanels.put("amigos", new PanelData(
                 ClickGui.INSTANCE.getFriendsPanel().getX(),
                 ClickGui.INSTANCE.getFriendsPanel().getY(),
-                ClickGui.INSTANCE.getFriendsPanel().extended));
+                ClickGui.INSTANCE.getFriendsPanel().isExtended()));
         ConfigManager.save();
     }
 
@@ -145,7 +145,7 @@ public class ClientConfig {
         extendablePanels.replace("amigos", new PanelData(
                 ClickGui.INSTANCE.getFriendsPanel().getX(),
                 ClickGui.INSTANCE.getFriendsPanel().getY(),
-                ClickGui.INSTANCE.getFriendsPanel().extended));
+                ClickGui.INSTANCE.getFriendsPanel().isExtended()));
         ConfigManager.save();
     }
 
diff --git a/src/main/java/me/retucio/sputnik/config/ConfigManager.java b/src/main/java/me/retucio/sputnik/config/ConfigManager.java
index e8bf8fb..81832fb 100644
--- a/src/main/java/me/retucio/sputnik/config/ConfigManager.java
+++ b/src/main/java/me/retucio/sputnik/config/ConfigManager.java
@@ -247,10 +247,10 @@ public class ConfigManager {
             panelData = config.extendablePanels.get(mp.category.toString());
         }
         if (panel instanceof ClientSettingsPanel) {
-            panelData = config.extendablePanels.get("S");
+            panelData = config.extendablePanels.get("ajustes");
         }
         if (panel instanceof FriendsPanel) {
-            panelData = config.extendablePanels.get("F");
+            panelData = config.extendablePanels.get("amigos");
         }
 
         if (panelData != null) {
@@ -258,13 +258,13 @@ public class ConfigManager {
             panel.setY(panelData.y());
 
             if (panel instanceof ModulePanel mPanel) {
-                mPanel.extended = panelData.extended();
+                mPanel.setExtended(panelData.extended());
             }
             if (panel instanceof ClientSettingsPanel sPanel) {
-                sPanel.extended = panelData.extended();
+                sPanel.setExtended(panelData.extended());
             }
             if (panel instanceof FriendsPanel fPanel) {
-                fPanel.extended = panelData.extended();
+                fPanel.setExtended(panelData.extended());
             }
         }
     }
diff --git a/src/main/java/me/retucio/sputnik/mixin/mixins/render/ItemInHandRendererMixin.java b/src/main/java/me/retucio/sputnik/mixin/mixins/render/ItemInHandRendererMixin.java
index 1d2aa67..d854985 100644
--- a/src/main/java/me/retucio/sputnik/mixin/mixins/render/ItemInHandRendererMixin.java
+++ b/src/main/java/me/retucio/sputnik/mixin/mixins/render/ItemInHandRendererMixin.java
@@ -5,7 +5,7 @@ import com.mojang.blaze3d.vertex.PoseStack;
 import me.retucio.sputnik.event.render.RenderHeldItemEvent;
 import me.retucio.sputnik.event.render.RenderArmEvent;
 import me.retucio.sputnik.module.ModuleManager;
-import me.retucio.sputnik.module.modules.player.HandView;
+import me.retucio.sputnik.module.modules.render.HandView;
 import net.minecraft.client.player.AbstractClientPlayer;
 import net.minecraft.client.renderer.ItemInHandRenderer;
 import net.minecraft.client.renderer.SubmitNodeCollector;
diff --git a/src/main/java/me/retucio/sputnik/module/Module.java b/src/main/java/me/retucio/sputnik/module/Module.java
index b35fbde..ec4b49c 100644
--- a/src/main/java/me/retucio/sputnik/module/Module.java
+++ b/src/main/java/me/retucio/sputnik/module/Module.java
@@ -9,6 +9,7 @@ import me.retucio.sputnik.module.setting.settings.BooleanSetting;
 import me.retucio.sputnik.module.setting.settings.EnumSetting;
 import me.retucio.sputnik.module.setting.settings.KeySetting;
 import me.retucio.sputnik.module.setting.Setting;
+import me.retucio.sputnik.ui.hud.HudRenderer;
 import me.retucio.sputnik.util.ChatUtil;
 import net.minecraft.client.Minecraft;
 import org.lwjgl.glfw.GLFW;
@@ -29,29 +30,52 @@ public class Module {
     private boolean saveSettings = true;
     private boolean searchMatch = true;
 
+
+    // ajustes que están en todos los módulos
+
+    protected KeySetting bind = new KeySetting(
+            "tecla",
+            "tecla asignada al módulo, ESC para desactivar",
+            GLFW.GLFW_KEY_UNKNOWN
+    );
+
     // dejar al usuario elegir si el módulo debería apagarse tras soltar su tecla asignada, o si la tecla debería alternar su estado
-    protected EnumSetting<KeyModes> keyMode = new EnumSetting<>("modo de tecla", "cómo interpretar la tecla configurada", KeyModes.class, KeyModes.TOGGLE);
-    protected KeySetting bind = new KeySetting("tecla", "tecla asignada al módulo, ESC para desactivar", GLFW.GLFW_KEY_UNKNOWN);
-    protected BooleanSetting notify = new BooleanSetting("notificar", "notificar en el chat al activar / desactivar", true);
+    protected EnumSetting<KeyMode> keyMode = new EnumSetting<>(
+            "modo de tecla",
+            "cómo interpretar la tecla configurada",
+            KeyMode.class, KeyMode.TOGGLE
+    );
+
+    protected BooleanSetting notify = new BooleanSetting(
+            "notificar",
+            "notificar al activar / desactivar",
+            true
+    );
+
+    protected EnumSetting<NotifyMode> notifyMode = new EnumSetting<>(
+            "modo de notificación",
+            "cómo notificar cuando se activa / desactiva",
+            NotifyMode.class, NotifyMode.WIDGET
+    );
 
     protected final List<SettingGroup> sgs = new ArrayList<>();
+    protected final SettingGroup sgModule = addSg(new SettingGroup("módulo", false));
     protected final SettingGroup sgGeneral = addSg(new SettingGroup("general", true));
 
-    protected Minecraft mc = Minecraft.getInstance();
-
+    protected static final Minecraft mc = Minecraft.getInstance();
 
     public Module(String name, String description, Category category) {
         this.name = name;
         this.description = description;
         this.category =  category;
-        sgGeneral.addAll(bind, keyMode, notify);
+        sgModule.addAll(bind, keyMode, notify, notifyMode);
     }
 
     public Module(String name, String description, Category category, int key) {
         this.name = name;
         this.description = description;
         this.category = category;
-        sgGeneral.addAll(bind, keyMode, notify);
+        sgModule.addAll(bind, keyMode, notify, notifyMode);
         this.bind.setDefaultValue(key);
 
         // puto marcos
@@ -69,6 +93,10 @@ public class Module {
         return sg;
     }
 
+    public void removeSg(SettingGroup sg) {
+        sgs.remove(sg);
+    }
+
     public List<SettingGroup> getSgs() {
         return sgs;
     }
@@ -86,6 +114,10 @@ public class Module {
         return sgGeneral;
     }
 
+    public SettingGroup getSgModule() {
+        return sgModule;
+    }
+
     public List<Setting<?>> getSettings() {
         List<Setting<?>> settings = new ArrayList<>();
         sgs.forEach(sg -> sg.forEach(settings::add));
@@ -102,27 +134,33 @@ public class Module {
     }
 
     public void onEnable() {
-        if (notify.getValue()) ChatUtil.info(getName() + " fue activado");
-        for (Method method : getClass().getDeclaredMethods())
+        if (notify.getValue()) {
+            if (notifyMode.is(NotifyMode.CHAT)) ChatUtil.info(getName() + " fue activado");
+            else HudRenderer.pushNotification(getName() + " fue activado", getName() + "fue activado.");
+        }
+        for (Method method : getClass().getDeclaredMethods()) {
             if (method.isAnnotationPresent(EventListener.class)) {
                 Sputnik.EVENT_BUS.subscribe(this);
                 break;
+            }
         }
-        Sputnik.EVENT_BUS.post(new ToggleModuleEvent(this));
     }
 
     public void onDisable() {
-        if (notify.getValue()) ChatUtil.info(getName() + " fue desactivado");
-        if (Sputnik.EVENT_BUS.isSubscribed(this))
+        if (notifyMode.is(NotifyMode.CHAT)) ChatUtil.info(getName() + " fue desactivado");
+        else HudRenderer.pushNotification(getName() + " fue desactivado", getName() + "fue desactivado.");
+        if (Sputnik.EVENT_BUS.isSubscribed(this)) {
             Sputnik.EVENT_BUS.unsubscribe(this);
-        Sputnik.EVENT_BUS.post(new ToggleModuleEvent(this));
+        }
     }
 
 
     // tick (ejecutado 20 veces por segundo)
     public void onTick() {}
 
+
     // getters y setters
+
     public String getName() {
         return name;
     }
@@ -156,7 +194,7 @@ public class Module {
     }
 
     public boolean shouldToggleOnBindRelease() {
-        return keyMode.is(KeyModes.HOLD);
+        return keyMode.is(KeyMode.HOLD);
     }
 
     public boolean shouldSaveSettings() {
@@ -192,13 +230,22 @@ public class Module {
         this.searchMatch = searchMatch;
     }
 
-    public enum KeyModes {
+    public enum KeyMode {
         HOLD("mantener"),
         TOGGLE("alternar");
 
         // ojalá hubiera una manera de evitar repetirse con esto pero no la hay (creo) ...
         private final String name;
-        KeyModes(String name) { this.name = name; }
+        KeyMode(String name) { this.name = name; }
+        @Override public String toString() { return name; }
+    }
+
+    public enum NotifyMode {
+        CHAT("por chat"),
+        WIDGET("por widget");
+
+        private final String name;
+        NotifyMode(String name) { this.name = name; }
         @Override public String toString() { return name; }
     }
 }
\ No newline at end of file
diff --git a/src/main/java/me/retucio/sputnik/module/modules/camera/Freelook.java b/src/main/java/me/retucio/sputnik/module/modules/camera/Freelook.java
index 962de4d..942c459 100644
--- a/src/main/java/me/retucio/sputnik/module/modules/camera/Freelook.java
+++ b/src/main/java/me/retucio/sputnik/module/modules/camera/Freelook.java
@@ -39,8 +39,8 @@ public class Freelook extends Module {
                 Category.CAMERA,
                 GLFW.GLFW_KEY_B);
 
-        keyMode.setDefaultValue(KeyModes.HOLD);
-        keyMode.setValue(KeyModes.HOLD);
+        keyMode.setDefaultValue(KeyMode.HOLD);
+        keyMode.setValue(KeyMode.HOLD);
 
         notify.setDefaultValue(false);
         notify.setValue(false);
diff --git a/src/main/java/me/retucio/sputnik/module/modules/camera/Zoom.java b/src/main/java/me/retucio/sputnik/module/modules/camera/Zoom.java
index ec4c239..41efda4 100644
--- a/src/main/java/me/retucio/sputnik/module/modules/camera/Zoom.java
+++ b/src/main/java/me/retucio/sputnik/module/modules/camera/Zoom.java
@@ -51,8 +51,8 @@ public class Zoom extends Module {
                 Category.CAMERA,
                 GLFW.GLFW_KEY_F);
 
-        keyMode.setDefaultValue(KeyModes.HOLD);
-        keyMode.setValue(KeyModes.HOLD);
+        keyMode.setDefaultValue(KeyMode.HOLD);
+        keyMode.setValue(KeyMode.HOLD);
 
         notify.setDefaultValue(false);
         notify.setValue(false);
diff --git a/src/main/java/me/retucio/sputnik/module/modules/combat/SpearKill.java b/src/main/java/me/retucio/sputnik/module/modules/combat/SpearKill.java
index b61b2fd..eac66c0 100644
--- a/src/main/java/me/retucio/sputnik/module/modules/combat/SpearKill.java
+++ b/src/main/java/me/retucio/sputnik/module/modules/combat/SpearKill.java
@@ -114,7 +114,7 @@ public class SpearKill extends Module {
                 mc.player.getBoundingBox().expandTowards(lookVec.scale(rayLength)),
                 e -> e instanceof LivingEntity
                         && e.isAlive() && e != mc.player
-                        && (!ignoreFriends.getValue() || FriendManager.INSTANCE.isFriend(e)));
+                        && (!ignoreFriends.getValue() || !FriendManager.INSTANCE.isFriend(e)));
 
         candidates.sort(Comparator.comparingDouble(e ->
                 eyePos.distanceToSqr(e.getBoundingBox().getCenter())));
diff --git a/src/main/java/me/retucio/sputnik/module/modules/movement/HitboxDesync.java b/src/main/java/me/retucio/sputnik/module/modules/movement/HitboxDesync.java
index 4f7d8ee..cf63a29 100644
--- a/src/main/java/me/retucio/sputnik/module/modules/movement/HitboxDesync.java
+++ b/src/main/java/me/retucio/sputnik/module/modules/movement/HitboxDesync.java
@@ -20,7 +20,7 @@ public class HitboxDesync extends Module {
 
     public HitboxDesync() {
         super("desync de hitbox", "exploit chino", Category.MOVEMENT);
-        keyMode.setDefaultValue(KeyModes.HOLD);
+        keyMode.setDefaultValue(KeyMode.HOLD);
     }
 
     @Override
diff --git a/src/main/java/me/retucio/sputnik/module/modules/player/AirPlace.java b/src/main/java/me/retucio/sputnik/module/modules/player/AirPlace.java
index 5801857..db23e70 100644
--- a/src/main/java/me/retucio/sputnik/module/modules/player/AirPlace.java
+++ b/src/main/java/me/retucio/sputnik/module/modules/player/AirPlace.java
@@ -26,7 +26,7 @@ import org.lwjgl.glfw.GLFW;
 public class AirPlace extends Module {
 
     private final SettingGroup sgScroll = addSg(new SettingGroup("scrolleo", true));
-    private final SettingGroup sgRender = addSg(new SettingGroup("extractRenderState", true));
+    private final SettingGroup sgRender = addSg(new SettingGroup("renderizado", true));
 
 
     // general
diff --git a/src/main/java/me/retucio/sputnik/module/modules/player/KeyPearl.java b/src/main/java/me/retucio/sputnik/module/modules/player/KeyPearl.java
index 9fa3b28..9fc143b 100644
--- a/src/main/java/me/retucio/sputnik/module/modules/player/KeyPearl.java
+++ b/src/main/java/me/retucio/sputnik/module/modules/player/KeyPearl.java
@@ -19,7 +19,7 @@ public class KeyPearl extends Module {
 
     public KeyPearl() {
         super("tecla de perla", "lanza una perla con una tecla", Category.PLAYER);
-        keyMode.setValue(KeyModes.HOLD);
+        keyMode.setValue(KeyMode.HOLD);
     }
 
     private int prevSlot = -1;
diff --git a/src/main/java/me/retucio/sputnik/module/modules/player/NoFall.java b/src/main/java/me/retucio/sputnik/module/modules/player/NoFall.java
index 349fd37..e4cf21f 100644
--- a/src/main/java/me/retucio/sputnik/module/modules/player/NoFall.java
+++ b/src/main/java/me/retucio/sputnik/module/modules/player/NoFall.java
@@ -64,7 +64,7 @@ public class NoFall extends Module {
 
     private final NumberSetting distance = sgGeneral.add(new NumberSetting(
             "distancia",
-            "distancia mínima de caída para aplicar el amortiguamiento",
+            "distancia mínima de caída para aplicar la amortiguación",
             3,
             3,
             23,
diff --git a/src/main/java/me/retucio/sputnik/module/modules/player/HandView.java b/src/main/java/me/retucio/sputnik/module/modules/render/HandView.java
similarity index 98%
rename from src/main/java/me/retucio/sputnik/module/modules/player/HandView.java
rename to src/main/java/me/retucio/sputnik/module/modules/render/HandView.java
index 670b5e7..b5f9acb 100644
--- a/src/main/java/me/retucio/sputnik/module/modules/player/HandView.java
+++ b/src/main/java/me/retucio/sputnik/module/modules/render/HandView.java
@@ -1,4 +1,4 @@
-package me.retucio.sputnik.module.modules.player;
+package me.retucio.sputnik.module.modules.render;
 
 import com.github.retucio.neutrino.EventListener;
 import com.mojang.blaze3d.vertex.PoseStack;
@@ -97,9 +97,11 @@ public class HandView extends Module {
             0, -180, 180, 1));
 
     public HandView() {
-        super("manos",
+        super(
+                "manos",
                 "modifica la manera en la que se renderizan las manos",
-                Category.PLAYER);
+                Category.RENDER
+        );
     }
 
     @EventListener
diff --git a/src/main/java/me/retucio/sputnik/module/setting/Setting.java b/src/main/java/me/retucio/sputnik/module/setting/Setting.java
index 5bbb990..111f5bb 100644
--- a/src/main/java/me/retucio/sputnik/module/setting/Setting.java
+++ b/src/main/java/me/retucio/sputnik/module/setting/Setting.java
@@ -72,7 +72,7 @@ public abstract class Setting<T> {
     }
 
     public void setValue(T value) {
-        if (this.value != value) {
+        if (!this.value.equals(value)) {
             this.value = value;
 
             fireUpdateEvent();
diff --git a/src/main/java/me/retucio/sputnik/module/setting/SettingGroup.java b/src/main/java/me/retucio/sputnik/module/setting/SettingGroup.java
index ea4f6c8..56f3714 100644
--- a/src/main/java/me/retucio/sputnik/module/setting/SettingGroup.java
+++ b/src/main/java/me/retucio/sputnik/module/setting/SettingGroup.java
@@ -12,7 +12,7 @@ import java.util.List;
 public class SettingGroup implements Iterable<Setting<?>> {
 
     private Module module;
-    private final String name;
+    private String name;
     private boolean extended;
 
     final List<Setting<?>> settings = new ArrayList<>(1);
@@ -56,6 +56,8 @@ public class SettingGroup implements Iterable<Setting<?>> {
         return name;
     }
 
+    public void setName(String name) { this.name = name; }
+
     public boolean isExtended() {
         return extended;
     }
diff --git a/src/main/java/me/retucio/sputnik/ui/screen/ClickGui.java b/src/main/java/me/retucio/sputnik/ui/screen/ClickGui.java
index aaa366e..5c241f8 100644
--- a/src/main/java/me/retucio/sputnik/ui/screen/ClickGui.java
+++ b/src/main/java/me/retucio/sputnik/ui/screen/ClickGui.java
@@ -27,7 +27,6 @@ import me.retucio.sputnik.ui.widgets.Widget;
 import me.retucio.sputnik.ui.widgets.misc.ScrollBarWidget;
 import me.retucio.sputnik.ui.widgets.misc.SearchBarWidget;
 import me.retucio.sputnik.ui.widgets.panels.settings.FriendSettingsPanel;
-import me.retucio.sputnik.util.ChatUtil;
 import me.retucio.sputnik.util.KeyUtil;
 
 import me.retucio.sputnik.util.MiscUtil;
@@ -43,7 +42,6 @@ import org.jspecify.annotations.NonNull;
 import org.lwjgl.glfw.GLFW;
 
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.List;
 import java.util.Optional;
 
@@ -76,8 +74,6 @@ public class ClickGui extends Screen {
         super(Component.literal("interfaz"));
         Sputnik.EVENT_BUS.subscribe(this);
 
-        settingsPanels.add(clientSettingsPanel);
-
         int x = 4;
         for (Category category : Category.values()) {
             modulePanels.add(new ModulePanel(category, x, 40, 100, 20));
@@ -99,6 +95,7 @@ public class ClickGui extends Screen {
 
         // actualizar la posición de renderizado vertical de los paneles cada tick
         friendsPanel.updateRenderY(scrollOffset);
+        clientSettingsPanel.updateRenderY(scrollOffset);
         for (ModulePanel mp : modulePanels) {
             mp.updateRenderY(scrollOffset);
         }
@@ -125,6 +122,9 @@ public class ClickGui extends Screen {
         friendsPanel.render(gui, mouseX, mouseY, delta);
         friendsPanel.updatePosition(mouseX, mouseY);
 
+        clientSettingsPanel.render(gui, mouseX, mouseY, delta);
+        clientSettingsPanel.updatePosition(mouseX, mouseY);
+
         filterSearchResults();
 
         renderBottomGradient(gui, scrollOffset);
@@ -152,13 +152,25 @@ public class ClickGui extends Screen {
 
     private int calculateContentHeight() {
         int bottom = mc.getWindow().getGuiScaledHeight();
+
         for (ModulePanel mp : modulePanels) {
-            bottom = mp.getY() + mp.getH() + mp.getTotalHeight();
+            int mpBottom = mp.getY() + mp.getH();
+            if (mp.isExtended()) mpBottom += mp.getTotalHeight();
+            bottom = Math.max(bottom, mpBottom);
         }
+
         for (SettingsPanel sp : settingsPanels) {
             bottom = Math.max(bottom, sp.getY() + sp.getH() + sp.getTotalHeight());
         }
 
+        int friendsBottom = friendsPanel.getY() + friendsPanel.getH()
+                + (friendsPanel.isExtended() ? friendsPanel.getTotalHeight() : 0);
+        bottom = Math.max(bottom, friendsBottom);
+
+        int clientBottom = clientSettingsPanel.getY() + clientSettingsPanel.getH()
+                + (clientSettingsPanel.isExtended() ? clientSettingsPanel.getTotalHeight() : 0);
+        bottom = Math.max(bottom, clientBottom);
+
         return bottom + 20;  // padding
     }
 
@@ -167,15 +179,14 @@ public class ClickGui extends Screen {
         int x = (int) click.x();
         int y = (int) click.y();
 
-        ChatUtil.info(x + " " + y);
-
         miscWidgets.forEach(w -> w.mouseClicked(
                 x, y, click.button()
         ));
 
-        // detectar clics sobre los marcos
+        // detectar clics sobre los paneles
         friendsPanel.mouseClicked(x, y, click.button());
-        for (ModulePanel mp : new ArrayList<>(modulePanels)) {
+        clientSettingsPanel.mouseClicked(x, y, click.button());
+        for (ModulePanel mp : modulePanels.reversed()) {
             mp.mouseClicked(x, y, click.button());
         }
         for (SettingsPanel sp : new ArrayList<>(settingsPanels)) {
@@ -193,9 +204,10 @@ public class ClickGui extends Screen {
         miscWidgets.forEach(w -> w.mouseReleased(
                 x, y, click.button()));
 
-        // registrar cuándo se suelta el clic, en cada marco respectivamente
+        // registrar cuándo se suelta el clic, en cada panel respectivamente
         friendsPanel.mouseReleased(x, y, click.button());
-        for (ModulePanel mp : new ArrayList<>(modulePanels)) {
+        clientSettingsPanel.mouseReleased(x, y, click.button());
+        for (ModulePanel mp : modulePanels.reversed()) {
             mp.mouseReleased(x, y, click.button());
         }
         for (SettingsPanel sp : new ArrayList<>(settingsPanels)) {
@@ -211,6 +223,8 @@ public class ClickGui extends Screen {
                 (int) click.x(),
                 (int) click.y()));
 
+        // MPs?
+
         for (SettingsPanel sp : new ArrayList<>(settingsPanels))
             sp.mouseDragged((int) click.x(), (int) click.y());
 
@@ -230,7 +244,7 @@ public class ClickGui extends Screen {
 
     @EventListener
     public void onMouseMiddleButton(MouseClickEvent event) {
-        // mover todos los marcos a un punto visible al presionar shift + la rueda del ratón
+        // mover todos los paneles a un punto visible al presionar shift + la rueda del ratón
         if (Sputnik.mc.screen != this || event.getButton() != 2 || !KeyUtil.isKeyDown(GLFW.GLFW_KEY_LEFT_SHIFT)) return;
 
         int h = Sputnik.mc.getWindow().getGuiScaledHeight();
@@ -241,14 +255,17 @@ public class ClickGui extends Screen {
         if (correction != 0) {
             modulePanels.forEach(mp -> mp.setY(mp.getY() + correction));
             settingsPanels.forEach(sp -> sp.setY(sp.getY() + correction));
+            friendsPanel.setY(friendsPanel.getY() + correction);
+            clientSettingsPanel.setY(clientSettingsPanel.getY() + correction);
         }
     }
 
     public void filterSearchResults() {
         if (!clientSettings.searchBar.getValue()) return;
         String searchInput = searchBar.getSearchInput().trim();
-        if (!clientSettings.matchCase.getValue()) searchInput = searchInput.toLowerCase();
-
+        if (!clientSettings.matchCase.getValue()) {
+            searchInput = searchInput.toLowerCase();
+        }
 
         for (ModulePanel mp : modulePanels) {
             for (Button b : mp.getButtons()) {
@@ -319,6 +336,26 @@ public class ClickGui extends Screen {
 
             friend.setSearchMatch(name.contains(searchInput) || uuid.contains(searchInput));
         }
+
+        for (Button b : clientSettingsPanel.getButtons()) {
+            if (!(b instanceof SettingButton<?> sb)) continue;
+            Setting<?> setting = sb.getSetting();
+
+            if (searchInput.isEmpty()) {
+                setting.setSearchMatch(true);
+                continue;
+            }
+
+            String name = MiscUtil.removeAccentMarks(setting.getName());
+            String desc = MiscUtil.removeAccentMarks(setting.getDescription());
+
+            if (!clientSettings.matchCase.getValue()) {
+                name = name.toLowerCase();
+                desc = desc.toLowerCase();
+            }
+
+            setting.setSearchMatch(name.contains(searchInput) || desc.contains(searchInput));
+        }
     }
 
     public SettingsPanel getSettingsPanelOfModule(Module module) {
@@ -463,27 +500,12 @@ public class ClickGui extends Screen {
 
     // getters y setters de widgets
 
-    public List<ModulePanel> getModulePanels() {
-        return modulePanels;
-    }
-
-    public ClientSettingsPanel getClientSettingsPanel() {
-        return clientSettingsPanel;
-    }
-
-    public FriendsPanel getFriendsPanel() {
-        return friendsPanel;
-    }
-
-    public List<Widget> getMiscWidgets() { return miscWidgets; }
-
-    public List<SettingsPanel> getSettingsPanels() {
-        return settingsPanels;
-    }
-
-    public SearchBarWidget getSearchBar() {
-        return searchBar;
-    }
+    public List<ModulePanel> getModulePanels() { return modulePanels; }
+    public List<SettingsPanel> getSettingsPanels() { return settingsPanels; }
+    public ClientSettingsPanel getClientSettingsPanel() { return clientSettingsPanel; }
+    public FriendsPanel getFriendsPanel() { return friendsPanel; }
+    public SearchBarWidget getSearchBar() { return searchBar; }
+    public ScrollBarWidget getScrollBar() { return scrollBar; }
 
     public void setAnyFocused(boolean anyFocused) {
         this.anyFocused = anyFocused;
diff --git a/src/main/java/me/retucio/sputnik/ui/screen/UpdateScreen.java b/src/main/java/me/retucio/sputnik/ui/screen/UpdateScreen.java
index c2445ef..2e8a040 100644
--- a/src/main/java/me/retucio/sputnik/ui/screen/UpdateScreen.java
+++ b/src/main/java/me/retucio/sputnik/ui/screen/UpdateScreen.java
@@ -31,7 +31,7 @@ public class UpdateScreen extends Screen {
     );
 
     private final Component outdatedText = Component.literal("version desactualizada: " + Sputnik.MOD_VERSION);
-    private final Component updateText = Component.literal("descarga la última versión (" + VersionChecker.getLatestVersion() + ") desde aquí:");
+    private final Component updateText = Component.literal("descarga la última versión (" + VersionChecker.INSTANCE.getLatestVersion() + ") desde aquí:");
 
     private final Button idgafButton = Button.builder(
             Component.literal("me la pela"),
diff --git a/src/main/java/me/retucio/sputnik/ui/widgets/buttons/settings/ChooseButton.java b/src/main/java/me/retucio/sputnik/ui/widgets/buttons/settings/ChooseButton.java
index 9fd5f46..a70ff77 100644
--- a/src/main/java/me/retucio/sputnik/ui/widgets/buttons/settings/ChooseButton.java
+++ b/src/main/java/me/retucio/sputnik/ui/widgets/buttons/settings/ChooseButton.java
@@ -2,6 +2,7 @@ package me.retucio.sputnik.ui.widgets.buttons.settings;
 
 import me.retucio.sputnik.module.Category;
 import me.retucio.sputnik.module.Module;
+import me.retucio.sputnik.module.setting.SettingGroup;
 import me.retucio.sputnik.module.setting.settings.BooleanSetting;
 import me.retucio.sputnik.module.setting.settings.OptionSetting;
 import me.retucio.sputnik.ui.widgets.buttons.SettingButton;
@@ -67,6 +68,8 @@ public class ChooseButton<T> extends SettingButton<OptionSetting<T>> {
     }
 
     private void rebuildDummy() {
+        dummy.removeSg(dummy.getSgModule());
+        dummy.getSgGeneral().setName("opciones");
         dummy.getSgGeneral().getSettings().clear();
         optionButtons.clear();
 
diff --git a/src/main/java/me/retucio/sputnik/ui/widgets/buttons/settings/ListButton.java b/src/main/java/me/retucio/sputnik/ui/widgets/buttons/settings/ListButton.java
index 7169bf8..bb43a2f 100644
--- a/src/main/java/me/retucio/sputnik/ui/widgets/buttons/settings/ListButton.java
+++ b/src/main/java/me/retucio/sputnik/ui/widgets/buttons/settings/ListButton.java
@@ -83,7 +83,8 @@ public class ListButton<T> extends SettingButton<ListSetting<T>> {
     }
 
     private void rebuildDummy() {
-        dummy.getSettings().clear();
+        dummy.removeSg(dummy.getSgModule());
+        dummy.getSgGeneral().setName("opciones");
         dummy.getSgGeneral().getSettings().clear();
         optionButtons.clear();
 
diff --git a/src/main/java/me/retucio/sputnik/ui/widgets/panels/CloseablePanel.java b/src/main/java/me/retucio/sputnik/ui/widgets/panels/CloseablePanel.java
new file mode 100644
index 0000000..5387756
--- /dev/null
+++ b/src/main/java/me/retucio/sputnik/ui/widgets/panels/CloseablePanel.java
@@ -0,0 +1,32 @@
+package me.retucio.sputnik.ui.widgets.panels;
+
+import me.retucio.sputnik.ui.widgets.Button;
+import me.retucio.sputnik.ui.widgets.Panel;
+import net.minecraft.client.gui.GuiGraphicsExtractor;
+import net.minecraft.network.chat.Component;
+
+public abstract class CloseablePanel<B extends Button> extends Panel<B> {
+
+    protected static final int PADDING = 4;
+
+    public CloseablePanel(String title, int x, int y, int w, int h) {
+        super(title, x, y, w, h);
+    }
+
+    // dibujar la "x"
+    protected void drawCloseButton(GuiGraphicsExtractor gui, int mouseX, int mouseY, int color) {
+        gui.text(mc.font, Component.literal("×"),
+                x + w - mc.font.width("×") - 2 * PADDING,
+                renderY + (h / 2) - (mc.font.lineHeight / 2),
+                color, true);
+    }
+
+    protected boolean isCloseButtonHovered(int mouseX, int mouseY) {
+        int closeX = x + w - mc.font.width("×") - 2 * PADDING;
+        int closeY = renderY + (h / 2) - (mc.font.lineHeight / 2);
+        return mouseX >= closeX && mouseX <= closeX + mc.font.width("×") &&
+                mouseY >= closeY && mouseY <= closeY + mc.font.lineHeight;
+    }
+
+    public abstract void onClose();
+}
\ No newline at end of file
diff --git a/src/main/java/me/retucio/sputnik/ui/widgets/panels/ExtendablePanel.java b/src/main/java/me/retucio/sputnik/ui/widgets/panels/ExtendablePanel.java
new file mode 100644
index 0000000..ad26c4b
--- /dev/null
+++ b/src/main/java/me/retucio/sputnik/ui/widgets/panels/ExtendablePanel.java
@@ -0,0 +1,45 @@
+package me.retucio.sputnik.ui.widgets.panels;
+
+import me.retucio.sputnik.ui.widgets.Button;
+import me.retucio.sputnik.ui.widgets.Panel;
+import net.minecraft.client.gui.GuiGraphicsExtractor;
+import net.minecraft.network.chat.Component;
+
+public abstract class ExtendablePanel<B extends Button> extends Panel<B> {
+    protected boolean extended;
+
+    public ExtendablePanel(String title, int x, int y, int w, int h) {
+        super(title, x, y, w, h);
+        this.extended = true;
+    }
+
+    protected void drawExpandCollapse(GuiGraphicsExtractor gui, int mouseX, int mouseY) {
+        String symbol = extended ? "-" : "+";
+        int textWidth = mc.font.width(symbol);
+        gui.text(mc.font, Component.literal(symbol),
+                x + w - textWidth - 8,
+                renderY + (h / 2) - (mc.font.lineHeight / 2),
+                -1, true);
+    }
+
+    protected boolean isExpandButtonHovered(int mouseX, int mouseY) {
+        String symbol = extended ? "-" : "+";
+        int textWidth = mc.font.width(symbol);
+        int buttonX = x + w - textWidth - 8;
+        int buttonY = renderY + (h / 2) - (mc.font.lineHeight / 2);
+        return mouseX >= buttonX && mouseX <= buttonX + textWidth &&
+                mouseY >= buttonY && mouseY <= buttonY + mc.font.lineHeight;
+    }
+
+    public void toggleExtended() {
+        extended = !extended;
+    }
+
+    public boolean isExtended() {
+        return extended;
+    }
+
+    public void setExtended(boolean extended) {
+        this.extended = extended;
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/me/retucio/sputnik/ui/widgets/panels/FriendsPanel.java b/src/main/java/me/retucio/sputnik/ui/widgets/panels/FriendsPanel.java
index 6cf5297..21d0785 100644
--- a/src/main/java/me/retucio/sputnik/ui/widgets/panels/FriendsPanel.java
+++ b/src/main/java/me/retucio/sputnik/ui/widgets/panels/FriendsPanel.java
@@ -4,30 +4,24 @@ import com.github.retucio.neutrino.EventListener;
 import me.retucio.sputnik.Sputnik;
 import me.retucio.sputnik.event.sputnik.FriendEvent;
 import me.retucio.sputnik.event.sputnik.FriendPanelEvent;
-import me.retucio.sputnik.event.sputnik.ModulePanelEvent;
 import me.retucio.sputnik.friend.Friend;
 import me.retucio.sputnik.friend.FriendManager;
 import me.retucio.sputnik.ui.screen.ClickGui;
-import me.retucio.sputnik.ui.widgets.Panel;
 import me.retucio.sputnik.ui.widgets.buttons.FriendButton;
-import me.retucio.sputnik.ui.widgets.buttons.ModuleButton;
 import me.retucio.sputnik.util.Colors;
-import net.minecraft.ChatFormatting;
 import net.minecraft.client.gui.GuiGraphicsExtractor;
 import net.minecraft.network.chat.Component;
 
 import java.util.List;
 
 
-public class FriendsPanel extends Panel<FriendButton> {
+public class FriendsPanel extends ExtendablePanel<FriendButton> {
 
-    public boolean extended;
     private int offset;
 
     public FriendsPanel(int x, int y, int w, int h) {
         super("amigos", x, y, w, h);
         dragging = false;
-        extended = true;
 
         Sputnik.EVENT_BUS.subscribe(this);
 
@@ -40,12 +34,9 @@ public class FriendsPanel extends Panel<FriendButton> {
 
     @Override
     protected void updateWidth() {
-        // asegurarse de que todos los botones caben en el panel, haciendo
-        // que la anchura se ajuste al texto más largo
         int maxWidth = mc.font.width(title) + mc.font.width("  +");
         for (FriendButton button : buttons) {
-            String text = button.getFriend().getName();
-            int textWidth = mc.font.width(text);
+            int textWidth = mc.font.width(button.getFriend().getName());
             maxWidth = Math.max(maxWidth, textWidth);
         }
         this.w = maxWidth + 22;
@@ -54,36 +45,27 @@ public class FriendsPanel extends Panel<FriendButton> {
     @Override
     public void render(GuiGraphicsExtractor gui, int mouseX, int mouseY, float delta) {
         updateWidth();
-        gui.fill(x, renderY, x + w, renderY + h, Colors.mainColor.getRGB());  // cabeza del panel
+        gui.fill(x, renderY, x + w, renderY + h, Colors.mainColor.getRGB());
 
-        // título del panel
         gui.text(mc.font, Component.literal(title),
                 x + 8,
                 renderY + (h / 2) - (mc.font.lineHeight / 2),
                 -1, true);
 
-        gui.text(mc.font, extended ? "-" : "+",
-                x + w - mc.font.width("+") - 8,  // '+' y '-' tienen la misma anchura, o sea que no importa cuál use
-                renderY + (h / 2) - (mc.font.lineHeight / 2),
-                -1, true);
+        drawExpandCollapse(gui, mouseX, mouseY);
 
         List<FriendButton> visibleButtons = buttons.stream()
                 .filter(fb -> fb.getFriend().isSearchMatch())
                 .toList();
 
-        // dibujar los botones solo si está extendido
         if (extended) {
             totalHeight = visibleButtons.size() * h + 3;
-            gui.fill(  // fondo para los botones
-                    x, renderY + h + 1,
-                    x + w, renderY + h + totalHeight,
-                    Colors.panelBgColor.getRGB());
+            gui.fill(x, renderY + h + 1, x + w, renderY + h + totalHeight, Colors.panelBgColor.getRGB());
 
-            // dibujar los botones para cada módulo
-            int buttonY =  renderY + h + 1;
-            for (FriendButton moduleButton : visibleButtons) {
-                moduleButton.setOffset(buttonY - renderY);
-                moduleButton.render(gui, mouseX, mouseY, delta);
+            int buttonY = renderY + h + 1;
+            for (FriendButton friendButton : visibleButtons) {
+                friendButton.setOffset(buttonY - renderY);
+                friendButton.render(gui, mouseX, mouseY, delta);
                 buttonY += h;
             }
         } else {
@@ -93,19 +75,18 @@ public class FriendsPanel extends Panel<FriendButton> {
 
     @Override
     public void mouseClicked(int mouseX, int mouseY, int button) {
-        // registrar clics
         if (isHovered(mouseX, mouseY) && ClickGui.INSTANCE.trySelect(this)) {
-            if (button == 0) {  // clic izquierdo para arrastrarlo
+            if (button == 0) {
                 dragging = true;
                 dragX = mouseX - x;
                 dragY = mouseY - y;
-            } else if (button == 1) {  // clic derecho para extenderlo
-                extended = !extended;
+            } else if (button == 1) {
+                toggleExtended();
                 Sputnik.EVENT_BUS.post(new FriendPanelEvent.Extend());
             }
         }
 
-        if (!extended) return;  // solo dejar clicar en los botones si el marco está extendido
+        if (!extended) return;
 
         List<FriendButton> visibleFriendButtons = buttons.stream()
                 .filter(fb -> fb.getFriend().isSearchMatch())
@@ -119,26 +100,21 @@ public class FriendsPanel extends Panel<FriendButton> {
     @Override
     public void mouseReleased(int mouseX, int mouseY, int button) {
         ClickGui.INSTANCE.unselect(this);
-        if (button == 0 && dragging) {
-            dragging = false;
-        }
+        if (button == 0 && dragging) dragging = false;
 
         List<FriendButton> visibleFriendButtons = buttons.stream()
                 .filter(fb -> fb.getFriend().isSearchMatch())
                 .toList();
 
         for (FriendButton friendButton : visibleFriendButtons) {
-            if (friendButton.isHovered(mouseX, mouseY)) {
+            if (friendButton.isHovered(mouseX, mouseY))
                 friendButton.mouseReleased(mouseX, mouseY, button);
-            }
         }
 
-        if (isHovered(mouseX, mouseY)) {
+        if (isHovered(mouseX, mouseY))
             Sputnik.EVENT_BUS.post(new FriendPanelEvent.Move());
-        }
     }
 
-    // actualizar la posición al arrastrar el panel
     public void updatePosition(double mouseX, double mouseY) {
         if (dragging) {
             x = (int) (mouseX - dragX);
@@ -158,10 +134,9 @@ public class FriendsPanel extends Panel<FriendButton> {
 
     public FriendButton getButtonOfFriend(Friend friend) {
         for (FriendButton button : buttons) {
-            if (button.getFriend().getUuid().equals(friend.getUuid())) {
+            if (button.getFriend().getUuid().equals(friend.getUuid()))
                 return button;
-            }
         }
         return null;
     }
-}
+}
\ No newline at end of file
diff --git a/src/main/java/me/retucio/sputnik/ui/widgets/panels/ModulePanel.java b/src/main/java/me/retucio/sputnik/ui/widgets/panels/ModulePanel.java
index 260ea09..37a3339 100644
--- a/src/main/java/me/retucio/sputnik/ui/widgets/panels/ModulePanel.java
+++ b/src/main/java/me/retucio/sputnik/ui/widgets/panels/ModulePanel.java
@@ -7,10 +7,8 @@ import me.retucio.sputnik.module.Module;
 import me.retucio.sputnik.module.ModuleManager;
 import me.retucio.sputnik.ui.screen.ClickGui;
 import me.retucio.sputnik.ui.widgets.buttons.ModuleButton;
-import me.retucio.sputnik.ui.widgets.Panel;
 import me.retucio.sputnik.util.Colors;
-import net.minecraft.ChatFormatting;
-import net.minecraft.client.Minecraft;
+
 import net.minecraft.client.gui.GuiGraphicsExtractor;
 import net.minecraft.network.chat.Component;
 
@@ -18,18 +16,15 @@ import java.util.List;
 
 
 // panel para los módulos
-public class ModulePanel extends Panel<ModuleButton> {
+public class ModulePanel extends ExtendablePanel<ModuleButton> {
 
-    public boolean extended;
     public final Category category;
 
     public ModulePanel(Category category, int x, int y, int w, int h) {
         super(category.toString(), x, y, w, h);
         this.category = category;
         dragging = false;
-        extended = true;
 
-        // determinar el saliente para cada botón de módulo
         int offset = h;
         for (Module module : ModuleManager.INSTANCE.getModules()) {
             if (!module.getCategory().equals(this.category)) continue;
@@ -40,12 +35,9 @@ public class ModulePanel extends Panel<ModuleButton> {
 
     @Override
     protected void updateWidth() {
-        // asegurarse de que todos los botones caben en el panel, haciendo
-        // que la anchura se ajuste al texto más largo
         int maxWidth = mc.font.width(title);
         for (ModuleButton button : buttons) {
-            String text = button.getModule().getName();
-            int textWidth = mc.font.width(text);
+            int textWidth = mc.font.width(button.getModule().getName());
             maxWidth = Math.max(maxWidth, textWidth);
         }
         this.w = maxWidth + 22;
@@ -54,33 +46,24 @@ public class ModulePanel extends Panel<ModuleButton> {
     @Override
     public void render(GuiGraphicsExtractor gui, int mouseX, int mouseY, float delta) {
         updateWidth();
-        gui.fill(x, renderY, x + w, renderY + h, Colors.mainColor.getRGB()); // cabeza del marco
+        gui.fill(x, renderY, x + w, renderY + h, Colors.mainColor.getRGB());
 
-        // título del marco
         gui.text(mc.font, Component.literal(title),
                 x + 8,
                 renderY + (h / 2) - (mc.font.lineHeight / 2),
                 -1, true);
 
-        gui.text(mc.font, extended ? "-" : "+",
-                x + w - mc.font.width("+") - 8,  // '+' y '-' tienen la misma anchura, o sea que no importa cuál use
-                renderY + (h / 2) - (mc.font.lineHeight / 2),
-                -1, true);
+        drawExpandCollapse(gui, mouseX, mouseY);
 
         List<ModuleButton> visibleButtons = buttons.stream()
                 .filter(mb -> mb.getModule().isSearchMatch())
                 .toList();
 
-        // dibujar sus módulos solo si está extendido
         if (extended) {
             totalHeight = visibleButtons.size() * h + 3;
-            gui.fill(  // fondo para los botones
-                    x, renderY + h + 1,
-                    x + w, renderY + h + totalHeight,
-                    Colors.panelBgColor.getRGB());
+            gui.fill(x, renderY + h + 1, x + w, renderY + h + totalHeight, Colors.panelBgColor.getRGB());
 
-            // dibujar los botones para cada módulo
-            int buttonY =  renderY + h + 1;
+            int buttonY = renderY + h + 1;
             for (ModuleButton moduleButton : visibleButtons) {
                 moduleButton.setOffset(buttonY - renderY);
                 moduleButton.render(gui, mouseX, mouseY, delta);
@@ -93,19 +76,18 @@ public class ModulePanel extends Panel<ModuleButton> {
 
     @Override
     public void mouseClicked(int mouseX, int mouseY, int button) {
-        // registrar clics
         if (isHovered(mouseX, mouseY) && ClickGui.INSTANCE.trySelect(this)) {
-            if (button == 0) {  // clic izquierdo para arrastrarlo
+            if (button == 0) {
                 dragging = true;
                 dragX = mouseX - x;
                 dragY = mouseY - y;
-            } else if (button == 1) {  // clic derecho para extenderlo
-                extended = !extended;
+            } else if (button == 1) {
+                toggleExtended();
                 Sputnik.EVENT_BUS.post(new ModulePanelEvent.Extend(this));
             }
         }
 
-        if (!extended) return;  // solo dejar clicar en los módulos si el marco está extendido
+        if (!extended) return;
 
         List<ModuleButton> visibleModuleButtons = buttons.stream()
                 .filter(mb -> mb.getModule().isSearchMatch())
@@ -116,30 +98,24 @@ public class ModulePanel extends Panel<ModuleButton> {
         }
     }
 
-    // detectar cuándo se suelta el clic
     @Override
     public void mouseReleased(int mouseX, int mouseY, int button) {
         ClickGui.INSTANCE.unselect(this);
-        if (button == 0 && dragging) {
-            dragging = false;
-        }
+        if (button == 0 && dragging) dragging = false;
 
         List<ModuleButton> visibleModuleButtons = buttons.stream()
                 .filter(mb -> mb.getModule().isSearchMatch())
                 .toList();
 
         for (ModuleButton moduleButton : visibleModuleButtons) {
-            if (moduleButton.isHovered(mouseX, mouseY)) {
+            if (moduleButton.isHovered(mouseX, mouseY))
                 moduleButton.mouseReleased(mouseX, mouseY, button);
-            }
         }
 
-        if (isHovered(mouseX, mouseY)) {
+        if (isHovered(mouseX, mouseY))
             Sputnik.EVENT_BUS.post(new ModulePanelEvent.Move(this));
-        }
     }
 
-    // actualizar la posición al arrastrar el panel
     public void updatePosition(double mouseX, double mouseY) {
         if (dragging) {
             x = (int) (mouseX - dragX);
diff --git a/src/main/java/me/retucio/sputnik/ui/widgets/panels/SettingsPanel.java b/src/main/java/me/retucio/sputnik/ui/widgets/panels/SettingsPanel.java
index bdb8730..a2770e2 100644
--- a/src/main/java/me/retucio/sputnik/ui/widgets/panels/SettingsPanel.java
+++ b/src/main/java/me/retucio/sputnik/ui/widgets/panels/SettingsPanel.java
@@ -18,15 +18,16 @@ import java.util.ArrayList;
 import java.util.List;
 
 
-// marco para los botones de los ajustes de cada módulo
-public class SettingsPanel extends Panel<SettingButton<? extends Setting<?>>> {
+// panel para los botones de los ajustes de cada módulo
+public class SettingsPanel extends CloseablePanel<SettingButton<? extends Setting<?>>> {
 
-    private Module module;
+    protected Module module;
     protected List<SettingGroup> settingGroups;
-    protected static final int PADDING = 4; // para ser consistente
+    public boolean drawHeader = true;
 
     public SettingsPanel(Module module, int x, int y, int w, int h) {
         super("ajustes de " + module.getName(), x, y, w, h);
+
         this.module = module;
         this.settingGroups = module.getSgs();
 
@@ -41,23 +42,25 @@ public class SettingsPanel extends Panel<SettingButton<? extends Setting<?>>> {
     public void render(GuiGraphicsExtractor gui, int mouseX, int mouseY, float delta) {
         updateWidth();
 
-        // cabezal
         int centerX = x + w / 2;
         int centerY = renderY + h / 2;
-        int titleX = x + 2 * PADDING;
-        int titleY = centerY - mc.font.lineHeight / 2;
 
-        int headerColor = module.isEnabled()
-                ? Colors.enabledToggleButtonColor.getRGB()
-                : Colors.disabledToggleButtonColor.getRGB();
+        if (drawHeader) {
+            int titleX = x + 2 * PADDING;
+            int titleY = centerY - mc.font.lineHeight / 2;
 
-        int closeButtonColor = isCloseButtonHovered(mouseX, mouseY)
-                ? Color.RED.getRGB()
-                : -1;
+            int headerColor = module.isEnabled()
+                    ? Colors.enabledToggleButtonColor.getRGB()
+                    : Colors.disabledToggleButtonColor.getRGB();
 
-        gui.fill(x, renderY, x + w, renderY + h, headerColor);
-        gui.text(mc.font, title, titleX, titleY, -1, true);
-        gui.text(mc.font, "×", x + w - mc.font.width("×") - 2 * PADDING, titleY, closeButtonColor, true);
+            int closeButtonColor = isCloseButtonHovered(mouseX, mouseY)
+                    ? Color.RED.getRGB()
+                    : -1;
+
+            gui.fill(x, renderY, x + w, renderY + h, headerColor);
+            gui.text(mc.font, title, titleX, titleY, -1, true);
+            drawCloseButton(gui, mouseX, mouseY, closeButtonColor);
+        }
 
         // filtrar botones visibles
         visibleButtons = buttons.stream()
@@ -154,29 +157,23 @@ public class SettingsPanel extends Panel<SettingButton<? extends Setting<?>>> {
         }
     }
 
-    @Override
-    public void drawTooltips(GuiGraphicsExtractor gui, int mouseX, int mouseY) {
-        for (SettingButton<?> sb : visibleButtons)
-            sb.drawTooltip(gui, mouseX, mouseY);
-    }
-
     @Override
     public void mouseClicked(int mouseX, int mouseY, int button) {
+        if (isCloseButtonHovered(mouseX, mouseY)) {
+            onClose();
+            return;
+        }
+
         if (isHovered(mouseX, mouseY) && ClickGui.INSTANCE.trySelect(this)) {
-            if (isCloseButtonHovered(mouseX, mouseY)) {
-                ClickGui.INSTANCE.closeSettingsPanel(this.module);
-                return;
-            }
             if (button == 0) {
                 dragging = true;
                 dragX = mouseX - x;
                 dragY = mouseY - y;
             } else if (button == 1) {
-                ClickGui.INSTANCE.closeSettingsPanel(module);
+                onClose();
             }
         }
 
-        // al hacer clic en los cabezales de los grupos de ajustes
         for (int i = 0; i < settingGroups.size(); i++) {
             SettingGroup group = settingGroups.get(i);
             if (hasVisibleSettingsInGroup(group) && isGroupHeaderHovered(mouseX, mouseY, i)) {
@@ -186,9 +183,8 @@ public class SettingsPanel extends Panel<SettingButton<? extends Setting<?>>> {
             }
         }
 
-        for (SettingButton<?> sb : visibleButtons) {
+        for (SettingButton<?> sb : visibleButtons)
             sb.mouseClicked(mouseX, mouseY, button);
-        }
     }
 
     @Override
@@ -395,4 +391,9 @@ public class SettingsPanel extends Panel<SettingButton<? extends Setting<?>>> {
     public void setSettingGroups(List<SettingGroup> settingGroups) {
         this.settingGroups = settingGroups;
     }
+
+    @Override
+    public void onClose() {
+        ClickGui.INSTANCE.closeSettingsPanel(this.module);
+    }
 }
\ No newline at end of file
diff --git a/src/main/java/me/retucio/sputnik/ui/widgets/panels/settings/ClientSettingsPanel.java b/src/main/java/me/retucio/sputnik/ui/widgets/panels/settings/ClientSettingsPanel.java
index 2dd2563..70f1b22 100644
--- a/src/main/java/me/retucio/sputnik/ui/widgets/panels/settings/ClientSettingsPanel.java
+++ b/src/main/java/me/retucio/sputnik/ui/widgets/panels/settings/ClientSettingsPanel.java
@@ -3,45 +3,45 @@ package me.retucio.sputnik.ui.widgets.panels.settings;
 import me.retucio.sputnik.Sputnik;
 import me.retucio.sputnik.event.sputnik.ClientSettingsPanelEvent;
 import me.retucio.sputnik.module.modules.client.ClientSettingsModule;
-import me.retucio.sputnik.module.setting.SettingGroup;
-import me.retucio.sputnik.ui.widgets.panels.SettingsPanel;
 import me.retucio.sputnik.ui.screen.ClickGui;
-import me.retucio.sputnik.ui.widgets.buttons.SettingButton;
+import me.retucio.sputnik.ui.widgets.panels.SettingsPanel;
 import me.retucio.sputnik.util.Colors;
 import net.minecraft.client.gui.GuiGraphicsExtractor;
 
 public class ClientSettingsPanel extends SettingsPanel {
 
     public static final ClientSettingsModule clientSettings = new ClientSettingsModule();
-    public boolean extended = false;
+    private boolean extended = false;
 
     public ClientSettingsPanel(int x, int y, int w, int h) {
         super(clientSettings, x, y, w, h);
-        title = "ajustes del mod";
+        this.title = "ajustes del mod";
+        this.drawHeader = false;   // disable the original header
     }
 
     @Override
     public void render(GuiGraphicsExtractor gui, int mouseX, int mouseY, float delta) {
         updateWidth();
 
-        // botones, fondo, etc.
-        if (extended) {
-            super.render(gui, mouseX, mouseY, delta);
-        }
-
-        // cabezal
+        // Draw our own custom header (no close button, with +/-
         gui.fill(x, renderY, x + w, renderY + h, Colors.mainColor.getRGB());
-
         gui.text(mc.font, title,
                 x + 8,
                 renderY + (h / 2) - (mc.font.lineHeight / 2),
                 -1, true);
 
-        gui.text(mc.font, extended ? "-" : "+",
-                x + w - mc.font.width("+") - 8,
+        String symbol = extended ? "-" : "+";
+        int textWidth = mc.font.width(symbol);
+        gui.text(mc.font, symbol,
+                x + w - textWidth - 8,
                 renderY + (h / 2) - (mc.font.lineHeight / 2),
                 -1, true);
 
+        // Only draw the rest of the panel (content) if extended
+        if (extended) {
+            // Call super.render() – but since drawHeader=false, it will only draw the content
+            super.render(gui, mouseX, mouseY, delta);
+        }
     }
 
     @Override
@@ -54,38 +54,53 @@ public class ClientSettingsPanel extends SettingsPanel {
             } else if (button == 1) {
                 extended = !extended;
                 Sputnik.EVENT_BUS.post(new ClientSettingsPanelEvent.Extend());
-            }
-        }
-
-        // solo dejar clicar en los ajustes si el marco está extendido
-        if (!extended) return;
-
-        for (int i = 0; i < settingGroups.size(); i++) {
-            SettingGroup group = settingGroups.get(i);
-            if (hasVisibleSettingsInGroup(group) && isGroupHeaderHovered(mouseX, mouseY, i)) {
-                group.setExtended(!group.isExtended());
-                updateVisibleButtonsForGroup(group);
                 return;
             }
         }
 
-        for (SettingButton<?> sb : buttons) {
-            sb.mouseClicked(mouseX, mouseY, button);
+        if (extended) {
+            super.mouseClicked(mouseX, mouseY, button);
         }
     }
 
     @Override
     public void mouseReleased(int mouseX, int mouseY, int button) {
         ClickGui.INSTANCE.unselect(this);
-        if (button == 0 && dragging)
+        if (button == 0 && dragging) {
+            dragging = false;
             Sputnik.EVENT_BUS.post(new ClientSettingsPanelEvent.Move());
-
-        super.mouseReleased(mouseX, mouseY, button);
+        }
+        if (extended) {
+            super.mouseReleased(mouseX, mouseY, button);
+        }
     }
 
     @Override
-    public void drawTooltips(GuiGraphicsExtractor gui, int mouseX, int mouseY) {
-        if (!extended) return;
-        super.drawTooltips(gui, mouseX, mouseY);
+    public void mouseDragged(int mouseX, int mouseY) {
+        if (extended) {
+            super.mouseDragged(mouseX, mouseY);
+        }
     }
-}
+
+    @Override
+    public void mouseScrolled(double amount) {
+        if (extended) {
+            super.mouseScrolled(amount);
+        }
+    }
+
+    @Override
+    public void onKey(int key, int action) {
+        if (extended) {
+            super.onKey(key, action);
+        }
+    }
+
+    public boolean isExtended() {
+        return extended;
+    }
+
+    public void setExtended(boolean extended) {
+        this.extended = extended;
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/me/retucio/sputnik/util/MiscUtil.java b/src/main/java/me/retucio/sputnik/util/MiscUtil.java
index 31a1d4d..9457d03 100644
--- a/src/main/java/me/retucio/sputnik/util/MiscUtil.java
+++ b/src/main/java/me/retucio/sputnik/util/MiscUtil.java
@@ -32,23 +32,22 @@ public class MiscUtil {
         }
     }
 
-    public static void copyVector(Vector3d destination, Vec3 source) {
-        destination.x = source.x;
-        destination.y = source.y;
-        destination.z = source.z;
+    public static void copyVector(Vector3d dst, Vec3 src) {
+        dst.x = src.x;
+        dst.y = src.y;
+        dst.z = src.z;
     }
 
-    @SuppressWarnings("unchecked")
-    public static <T> T getHighest(List<T> list) {
-        if (list.getFirst() == null || !(list.getFirst() instanceof Number value)) return null;
-        Number maxValue = value;
+    public static <T extends Number> T getHighest(List<T> list) {
+        if (list.getFirst() == null) return null;
+        T maxValue = list.getFirst();
         for (T t : list) {
-            if (((Number) t).doubleValue() > maxValue.doubleValue()) {
-                maxValue = (Number) t;
+            if (t.doubleValue() > maxValue.doubleValue()) {
+                maxValue = t;
             }
         }
 
-        return (T) maxValue;
+        return maxValue;
     }
 
     public static String getCurrentFormattedTime() {
diff --git a/src/main/java/me/retucio/sputnik/util/misc/VersionChecker.java b/src/main/java/me/retucio/sputnik/util/misc/VersionChecker.java
index ee513fb..e822cfa 100644
--- a/src/main/java/me/retucio/sputnik/util/misc/VersionChecker.java
+++ b/src/main/java/me/retucio/sputnik/util/misc/VersionChecker.java
@@ -11,15 +11,17 @@ import java.time.Duration;
 
 public class VersionChecker {
 
-    private static final URI PROPERTIES_URL = getFileURI();
+    public static final VersionChecker INSTANCE = new VersionChecker();
 
-    public static boolean updateAvailable = false;
-    public static String latestRemoteVersion = null;
-    public static String currentVersion = Sputnik.MOD_VERSION;
+    private final URI PROPERTIES_URL = getFileURI();
+    private final String CURRENT_VERSION = Sputnik.MOD_VERSION;
 
-    public static boolean shouldShowScreen = false;
+    private boolean updateAvailable = false;
+    private String latestRemoteVersion = null;
 
-    public static void check() {
+    public boolean shouldShowScreen = false;
+
+    public void check() {
         try {
             HttpClient client = HttpClient.newHttpClient();
             HttpRequest request = HttpRequest.newBuilder()
@@ -35,17 +37,17 @@ public class VersionChecker {
 
                 if (latestRemoteVersion != null) {
                     String remoteVersion = cleanVersion(latestRemoteVersion);
-                    String localVersion = cleanVersion(currentVersion);
+                    String localVersion = cleanVersion(CURRENT_VERSION);
 
                     if (compareVersions(localVersion, remoteVersion) == -1) {
                         updateAvailable = true;
                         Sputnik.LOGGER.info("actualización disponible. local: {}, más reciente: {}",
-                                currentVersion, latestRemoteVersion);
+                                CURRENT_VERSION, latestRemoteVersion);
                         shouldShowScreen = true;
                     } else if (compareVersions(localVersion, remoteVersion) == 0){
-                        Sputnik.LOGGER.info("el mod está al día: v{}", currentVersion);
+                        Sputnik.LOGGER.info("el mod está al día: v{}", CURRENT_VERSION);
                     } else {
-                        Sputnik.LOGGER.info("mod en estado de desarrollo: v{}", currentVersion);
+                        Sputnik.LOGGER.info("mod en estado de desarrollo: v{}", CURRENT_VERSION);
                     }
                 }
             } else {
@@ -135,7 +137,11 @@ public class VersionChecker {
         return null;
     }
 
-    public static String getLatestVersion() {
+    public String getLatestVersion() {
         return latestRemoteVersion;
     }
+
+    public boolean isUpdateAvailable() {
+        return updateAvailable;
+    }
 }
\ No newline at end of file
diff --git a/src/main/java/me/retucio/sputnik/util/render/DrawUtil.java b/src/main/java/me/retucio/sputnik/util/render/DrawUtil.java
index 997cc7c..7314a44 100644
--- a/src/main/java/me/retucio/sputnik/util/render/DrawUtil.java
+++ b/src/main/java/me/retucio/sputnik/util/render/DrawUtil.java
@@ -13,10 +13,10 @@ public class DrawUtil {
     }
 
     public static void drawCircle(GuiGraphicsExtractor gui, int x, int y, int radius, int color) {
-        for (int i = -radius; i <= radius; i++)
-            for (int j = -radius; j <= radius; j++)
-                if (i * i + j * j <= radius * radius)
-                    gui.fill(x + i, y + j, x + i + 1, y + j + 1, color);
+        for (int dy = -radius; dy <= radius; dy++) {
+            int dx = (int) Math.sqrt(radius * radius - dy * dy);
+            gui.fill(x - dx, y + dy, x + dx + 1, y + dy + 1, color);
+        }
     }
 
     public static void drawCheckerBoard(GuiGraphicsExtractor gui, int x, int y, int width, int height, int checkerSize, int color1, int color2) {