diff --git a/.gitignore b/.gitignore
index 6e637a6..be95506 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,7 +10,6 @@ target/
 ### IntelliJ IDEA ###
 .idea/modules.xml
 .idea/jarRepositories.xml
-.idea/compiler.xml
 .idea/libraries/
 *.iws
 *.iml
diff --git a/.idea/compiler.xml b/.idea/compiler.xml
new file mode 100644
index 0000000..377d957
--- /dev/null
+++ b/.idea/compiler.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <option name="DEFAULT_COMPILER" value="Javac" />
+    <annotationProcessing>
+      <profile name="Maven default annotation processors profile" enabled="true">
+        <sourceOutputDir name="target/generated-sources/annotations" />
+        <sourceTestOutputDir name="target/generated-test-sources/test-annotations" />
+        <outputRelativeToContentRoot value="true" />
+        <module name="InazumaGo" />
+      </profile>
+    </annotationProcessing>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/copilotDiffState.xml b/.idea/copilotDiffState.xml
index b12a13e..9e9dc17 100644
--- a/.idea/copilotDiffState.xml
+++ b/.idea/copilotDiffState.xml
@@ -3,37 +3,12 @@
   <component name="CopilotDiffPersistence">
     <option name="pendingDiffs">
       <map>
-        <entry key="$PROJECT_DIR$/src/main/java/es/iesquevedo/controller/MainController.java">
+        <entry key="$PROJECT_DIR$/.gitignore">
           <value>
             <PendingDiffInfo>
-              <option name="filePath" value="$PROJECT_DIR$/src/main/java/es/iesquevedo/controller/MainController.java" />
-              <option name="originalContent" value="                salutoLabel.setText(&quot;Error: no se pudo cargar el saludo&quot;);&#10;            } catch (Exception e) {&#10;package es.iesquevedo.controller;&#10;&#10;import javafx.fxml.FXML;&#10;import javafx.scene.control.Label;&#10;import java.util.logging.Level;&#10;import java.util.logging.Logger;&#10;&#10;public class MainController {&#10;    private static final Logger LOGGER = Logger.getLogger(MainController.class.getName());&#10;&#10;    private MainService mainService;&#10;&#10;    @FXML&#10;    private Label salutoLabel;&#10;&#10;    public MainController() {&#10;        // Constructor sin parámetros necesario para FXML&#10;        this.mainService = null;&#10;    }&#10;&#10;    public void setService(MainService mainService) {&#10;        this.mainService = mainService;&#10;        // Reinicializar después de establecer el servicio&#10;        initialize();&#10;    }&#10;&#10;    @FXML&#10;    public void initialize() {&#10;        // Este método se llama automáticamente después de que FXML carga los componentes&#10;        if (mainService != null &amp;&amp; salutoLabel != null) {&#10;            try {&#10;                String saludo = mainService.greet();&#10;                salutoLabel.setText(saludo);&#10;                LOGGER.info(&quot;Saludo establecido: &quot; + saludo);&#10;            } catch (Exception e) {&#10;                LOGGER.log(Level.SEVERE, &quot;Error al obtener saludo del servicio&quot;, e);&#10;                salutoLabel.setText(&quot;Error: no se pudo cargar el saludo&quot;);&#10;            }&#10;        } else if (salutoLabel != null) {&#10;            salutoLabel.setText(&quot;Servicio no disponible&quot;);&#10;        }&#10;    }&#10;&#10;    public String greet() {&#10;        return mainService != null ? mainService.greet() : &quot;Servicio no disponible&quot;;&#10;    }&#10;&#10;    public void setSalutoLabel(Label label) {&#10;        this.salutoLabel = label;&#10;}&#10;" />
-              <option name="updatedContent" value="package es.iesquevedo.controller;&#10;&#10;import es.iesquevedo.exception.ApiError;&#10;import es.iesquevedo.exception.MainErrorHandler;&#10;import es.iesquevedo.service.MainService;&#10;import javafx.fxml.FXML;&#10;import javafx.scene.control.Label;&#10;import java.util.logging.Level;&#10;import java.util.logging.Logger;&#10;&#10;public class MainController {&#10;    private static final Logger LOGGER = Logger.getLogger(MainController.class.getName());&#10;    private final MainErrorHandler errorHandler = new MainErrorHandler();&#10;&#10;    private MainService mainService;&#10;&#10;    @FXML&#10;    private Label salutoLabel;&#10;&#10;    public MainController() {&#10;        // Constructor sin parámetros necesario para FXML&#10;        this.mainService = null;&#10;    }&#10;&#10;    public void setService(MainService mainService) {&#10;        this.mainService = mainService;&#10;        // Reinicializar después de establecer el servicio&#10;        initialize();&#10;    }&#10;&#10;    @FXML&#10;    public void initialize() {&#10;        // Este método se llama automáticamente después de que FXML carga los componentes&#10;        if (mainService != null &amp;&amp; salutoLabel != null) {&#10;            try {&#10;                String saludo = mainService.greet();&#10;                salutoLabel.setText(saludo);&#10;                LOGGER.info(&quot;Saludo establecido: &quot; + saludo);&#10;            } catch (RuntimeException e) {&#10;                ApiError apiError = errorHandler.toApiError(e);&#10;                LOGGER.log(Level.SEVERE, &quot;Error al obtener saludo del servicio&quot;, e);&#10;                salutoLabel.setText(formatApiError(apiError));&#10;            }&#10;        } else if (salutoLabel != null) {&#10;            salutoLabel.setText(&quot;Servicio no disponible&quot;);&#10;        }&#10;    }&#10;&#10;    public String greet() {&#10;        return mainService != null ? mainService.greet() : &quot;Servicio no disponible&quot;;&#10;    }&#10;&#10;    static String formatApiError(ApiError apiError) {&#10;        return &quot;Error [&quot; + apiError.getCode() + &quot;]: &quot; + apiError.getMessage();&#10;    }&#10;&#10;    public void setSalutoLabel(Label label) {&#10;        this.salutoLabel = label;&#10;    }&#10;}&#10;" />
-            </PendingDiffInfo>
-          </value>
-        </entry>
-        <entry key="$PROJECT_DIR$/src/main/java/es/iesquevedo/exception/MainErrorHandler.java">
-          <value>
-            <PendingDiffInfo>
-              <option name="filePath" value="$PROJECT_DIR$/src/main/java/es/iesquevedo/exception/MainErrorHandler.java" />
-              <option name="updatedContent" value="package es.iesquevedo.exception;&#10;&#10;/**&#10; * Mapea excepciones de la aplicación a un formato de error estándar.&#10; */&#10;public class MainErrorHandler {&#10;&#10;    public ApiError toApiError(RuntimeException exception) {&#10;        if (exception instanceof NotFoundException) {&#10;            return new ApiError(exception.getMessage(), 404);&#10;        }&#10;        return new ApiError(&quot;Internal error&quot;, 500);&#10;    }&#10;}" />
-            </PendingDiffInfo>
-          </value>
-        </entry>
-        <entry key="$PROJECT_DIR$/src/main/java/es/iesquevedo/service/impl/MainServiceImpl.java">
-          <value>
-            <PendingDiffInfo>
-              <option name="filePath" value="$PROJECT_DIR$/src/main/java/es/iesquevedo/service/impl/MainServiceImpl.java" />
-              <option name="originalContent" value="        // Evita NPE si el repositorio devuelve null&#10;        return &quot;Hello, &quot; + Objects.toString(name, &quot;player&quot;) + &quot;!&quot;;&#10;import java.util.Objects;&#10;package es.iesquevedo.service.impl;&#10;&#10;import es.iesquevedo.service.MainService;&#10;import java.util.Objects;&#10;&#10;public class MainServiceImpl implements MainService {&#10;    private final MainRepository repository;&#10;&#10;    public MainServiceImpl(MainRepository repository) {&#10;        this.repository = repository;&#10;    }&#10;&#10;    @Override&#10;    public String greet() {&#10;        String name = repository.findDefaultName();&#10;        // Evita NPE si el repositorio devuelve null&#10;        return &quot;Hello, &quot; + Objects.toString(name, &quot;player&quot;) + &quot;!&quot;;&#10;    }&#10;}&#10;" />
-              <option name="updatedContent" value="package es.iesquevedo.service.impl;&#10;&#10;import es.iesquevedo.exception.NotFoundException;&#10;import es.iesquevedo.repository.MainRepository;&#10;import es.iesquevedo.service.MainService;&#10;&#10;public class MainServiceImpl implements MainService {&#10;    private final MainRepository repository;&#10;&#10;    public MainServiceImpl(MainRepository repository) {&#10;        this.repository = repository;&#10;    }&#10;&#10;    @Override&#10;    public String greet() {&#10;        String name = repository.findDefaultName();&#10;        if (name == null || name.isBlank()) {&#10;            throw new NotFoundException(&quot;Default player name not found&quot;);&#10;        }&#10;        return &quot;Hello, &quot; + name + &quot;!&quot;;&#10;    }&#10;}&#10;" />
-            </PendingDiffInfo>
-          </value>
-        </entry>
-        <entry key="$PROJECT_DIR$/src/test/java/es/iesquevedo/exception/MainErrorHandlerTest.java">
-          <value>
-            <PendingDiffInfo>
-              <option name="filePath" value="$PROJECT_DIR$/src/test/java/es/iesquevedo/exception/MainErrorHandlerTest.java" />
-              <option name="updatedContent" value="package es.iesquevedo.exception;&#10;&#10;import org.junit.jupiter.api.Test;&#10;&#10;import static org.junit.jupiter.api.Assertions.assertEquals;&#10;&#10;class MainErrorHandlerTest {&#10;&#10;    @Test&#10;    void toApiError_shouldMapNotFoundTo404() {&#10;        MainErrorHandler handler = new MainErrorHandler();&#10;&#10;        ApiError result = handler.toApiError(new NotFoundException(&quot;Resource not found&quot;));&#10;&#10;        assertEquals(404, result.getCode());&#10;        assertEquals(&quot;Resource not found&quot;, result.getMessage());&#10;    }&#10;&#10;    @Test&#10;    void toApiError_shouldMapGenericRuntimeExceptionTo500() {&#10;        MainErrorHandler handler = new MainErrorHandler();&#10;&#10;        ApiError result = handler.toApiError(new RuntimeException(&quot;boom&quot;));&#10;&#10;        assertEquals(500, result.getCode());&#10;        assertEquals(&quot;Internal error&quot;, result.getMessage());&#10;    }&#10;}" />
+              <option name="filePath" value="$PROJECT_DIR$/.gitignore" />
+              <option name="originalContent" value="# Ignorar archivos de configuración local&#10;/doc/ia/user-prompt.md&#10;&#10;target/&#10;!.mvn/wrapper/maven-wrapper.jar&#10;!**/src/main/**/target/&#10;!**/src/test/**/target/&#10;.kotlin&#10;&#10;### IntelliJ IDEA ###&#10;.idea/modules.xml&#10;.idea/jarRepositories.xml&#10;.idea/compiler.xml&#10;.idea/libraries/&#10;*.iws&#10;*.iml&#10;*.ipr&#10;&#10;### Eclipse ###&#10;.apt_generated&#10;.classpath&#10;.factorypath&#10;.project&#10;.settings&#10;.springBeans&#10;.sts4-cache&#10;&#10;### NetBeans ###&#10;/nbproject/private/&#10;/nbbuild/&#10;/dist/&#10;/nbdist/&#10;/.nb-gradle/&#10;build/&#10;!**/src/main/**/build/&#10;!**/src/test/**/build/&#10;&#10;### VS Code ###&#10;.vscode/&#10;&#10;### Mac OS ###&#10;.DS_Store" />
+              <option name="updatedContent" value="# Ignorar archivos de configuración local&#13;&#10;/doc/ia/user-prompt.md&#13;&#10;&#13;&#10;target/&#13;&#10;!.mvn/wrapper/maven-wrapper.jar&#13;&#10;!**/src/main/**/target/&#13;&#10;!**/src/test/**/target/&#13;&#10;.kotlin&#13;&#10;&#13;&#10;### IntelliJ IDEA ###&#13;&#10;.idea/modules.xml&#13;&#10;.idea/jarRepositories.xml&#13;&#10;.idea/libraries/&#13;&#10;*.iws&#13;&#10;*.iml&#13;&#10;*.ipr&#13;&#10;&#13;&#10;### Eclipse ###&#13;&#10;.apt_generated&#13;&#10;.classpath&#13;&#10;.factorypath&#13;&#10;.project&#13;&#10;.settings&#13;&#10;.springBeans&#13;&#10;.sts4-cache&#13;&#10;&#13;&#10;### NetBeans ###&#13;&#10;/nbproject/private/&#13;&#10;/nbbuild/&#13;&#10;/dist/&#13;&#10;/nbdist/&#13;&#10;/.nb-gradle/&#13;&#10;build/&#13;&#10;!**/src/main/**/build/&#13;&#10;!**/src/test/**/build/&#13;&#10;&#13;&#10;### VS Code ###&#13;&#10;.vscode/&#13;&#10;&#13;&#10;### Mac OS ###&#13;&#10;.DS_Store" />
             </PendingDiffInfo>
           </value>
         </entry>
diff --git a/TEST_GAME.md b/TEST_GAME.md
index 7ed8818..733ec62 100644
--- a/TEST_GAME.md
+++ b/TEST_GAME.md
@@ -150,9 +150,9 @@ Tras login exitoso, verás la nueva vista de partida con:
 
 ## Notas Técnicas
 
-- **Framework**: JavaFX 12.0.1
-- **Compilador**: Eclipse Compiler (ecj) para Java 8
-- **Versión Java**: 8 (compilado y compatible)
+- **Framework**: JavaFX 21.0.2
+- **Compilador**: Maven Compiler Plugin 3.13.0 con `javac`
+- **Versión Java**: 21 (LTS)
 - **Patrón de Diseño**: MVC (Model-View-Controller)
 - **Threading**: AnimationTimer para actualización de UI en tiempo real
 
diff --git a/ci/pipeline.yml b/ci/pipeline.yml
index 65feacb..abe7186 100644
--- a/ci/pipeline.yml
+++ b/ci/pipeline.yml
@@ -13,11 +13,12 @@ jobs:
     image: eclipse-temurin:21
     steps:
       - checkout
+      - run: java -version
       - restore_cache:
           key: maven-cache
           paths:
             - ~/.m2/repository
-      - run: ./mvnw -B -DskipTests=false test
+      - run: ./mvnw -B clean test
       - save_cache:
           key: maven-cache
           paths:
diff --git a/pom.xml b/pom.xml
index f48171a..f587d8d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -9,6 +9,11 @@
     <version>1.0-SNAPSHOT</version>
 
     <properties>
+        <maven.compiler.release>21</maven.compiler.release>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <javafx.maven.plugin.version>0.0.6</javafx.maven.plugin.version>
+        <javafx.version>21.0.2</javafx.version>
+        <os.detected.classifier>windows-x86_64</os.detected.classifier>
         <maven.compiler.source>21</maven.compiler.source>
         <maven.compiler.target>21</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
@@ -77,6 +82,14 @@
 
     <build>
         <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.13.0</version>
+                <configuration>
+                    <release>${maven.compiler.release}</release>
+                </configuration>
+            </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
diff --git a/src/main/java/es/iesquevedo/MainApp.java b/src/main/java/es/iesquevedo/MainApp.java
index ca48305..307f4aa 100644
--- a/src/main/java/es/iesquevedo/MainApp.java
+++ b/src/main/java/es/iesquevedo/MainApp.java
@@ -43,7 +43,7 @@ private static void runConsoleMode() {
         MainServiceImpl service = new MainServiceImpl(repository);
         MainController mainController = new MainController();
         mainController.setService(service);
-
+//error, eliminar este comentario
         // Adaptadores UI
         UIAdapter ui = new UIAdapter(mainController);
         HealthController healthController = new HealthController();
diff --git a/src/main/java/es/iesquevedo/controller/GameController.java b/src/main/java/es/iesquevedo/controller/GameController.java
index 1782603..d403057 100644
--- a/src/main/java/es/iesquevedo/controller/GameController.java
+++ b/src/main/java/es/iesquevedo/controller/GameController.java
@@ -6,7 +6,13 @@
 import javafx.scene.canvas.GraphicsContext;
 import javafx.scene.control.Label;
 import javafx.scene.paint.Color;
+import javafx.scene.paint.LinearGradient;
+import javafx.scene.paint.RadialGradient;
+import javafx.scene.paint.CycleMethod;
+import javafx.scene.paint.Stop;
 import javafx.scene.input.MouseEvent;
+import javafx.scene.text.Font;
+import javafx.scene.text.TextAlignment;
 
 import java.util.logging.Level;
 import java.util.logging.Logger;
@@ -77,74 +83,180 @@ private void updateCurrentTurn() {
 
     private void drawBoard() {
         GraphicsContext gc = boardCanvas.getGraphicsContext2D();
-        gc.setFill(Color.WHITE);
+        double boardStartX = getBoardStartX();
+        double boardStartY = getBoardStartY();
+        double boardEndX = getBoardEndX();
+        double boardEndY = getBoardEndY();
+        double boardSpan = (BOARD_SIZE - 1) * CELL_SIZE;
+
+        // Fondo de madera con degradado ligero (más realista)
+        LinearGradient wood = new LinearGradient(
+                0, 0, 1, 1, true, CycleMethod.NO_CYCLE,
+                new Stop(0, Color.web("#D2A679")),
+                new Stop(0.5, Color.web("#C37E3A")),
+                new Stop(1, Color.web("#B06A2E"))
+        );
+        gc.setFill(wood);
         gc.fillRect(0, 0, boardCanvas.getWidth(), boardCanvas.getHeight());
 
-        gc.setStroke(Color.BLACK);
-        gc.setLineWidth(1);
+        // Granulado / vetas finas
+        gc.setStroke(Color.color(0.15, 0.07, 0.03, 0.06));
+        gc.setLineWidth(0.8);
+        for (int i = 0; i < (int) boardCanvas.getWidth(); i += 6) {
+            double offset = (i % 24) * 0.3;
+            gc.beginPath();
+            gc.moveTo(0, (i + offset) % boardCanvas.getHeight());
+            gc.bezierCurveTo(boardCanvas.getWidth() * 0.25, (i + offset + 8) % boardCanvas.getHeight(),
+                    boardCanvas.getWidth() * 0.75, (i + offset - 12 + boardCanvas.getHeight()) % boardCanvas.getHeight(),
+                    boardCanvas.getWidth(), (i + offset) % boardCanvas.getHeight());
+            gc.stroke();
+        }
 
+        // Marco exterior con esquinas redondeadas perceptuales
+        gc.setStroke(Color.color(0.12, 0.06, 0.03, 1.0));
+        gc.setLineWidth(5);
+        double outerX = boardStartX - 4;
+        double outerY = boardStartY - 4;
+        double outerW = boardSpan + 8;
+        double outerH = boardSpan + 8;
+        gc.strokeRoundRect(outerX, outerY, outerW, outerH, 12, 12);
+
+        // Marco interior menos intenso
+        gc.setStroke(Color.color(0.36, 0.18, 0.08, 0.7));
+        gc.setLineWidth(1.5);
+        gc.strokeRoundRect(boardStartX - 1, boardStartY - 1,
+                boardSpan + 2, boardSpan + 2, 8, 8);
+
+        // Líneas del tablero, ligeramente suavizadas con doble trazo (sombra + línea)
         for (int i = 0; i < BOARD_SIZE; i++) {
-            gc.strokeLine(CELL_SIZE / 2, CELL_SIZE / 2 + i * CELL_SIZE,
-                         CELL_SIZE / 2 + (BOARD_SIZE - 1) * CELL_SIZE, CELL_SIZE / 2 + i * CELL_SIZE);
-            gc.strokeLine(CELL_SIZE / 2 + i * CELL_SIZE, CELL_SIZE / 2,
-                         CELL_SIZE / 2 + i * CELL_SIZE, CELL_SIZE / 2 + (BOARD_SIZE - 1) * CELL_SIZE);
+            double y = getIntersectionY(i);
+            double x = getIntersectionX(i);
+
+            // sombra de la línea horizontal
+            gc.setStroke(Color.color(0, 0, 0, 0.12));
+            gc.setLineWidth(2.0);
+            gc.strokeLine(boardStartX + 0.8, y + 0.8, boardEndX + 0.8, y + 0.8);
+
+            // línea principal
+            gc.setStroke(Color.color(0.06, 0.03, 0.01, 1.0));
+            gc.setLineWidth(1.2);
+            gc.strokeLine(boardStartX, y, boardEndX, y);
+
+            // sombra vertical
+            gc.setStroke(Color.color(0, 0, 0, 0.12));
+            gc.setLineWidth(2.0);
+            gc.strokeLine(x + 0.8, boardStartY + 0.8, x + 0.8, boardEndY + 0.8);
+
+            // línea vertical principal
+            gc.setStroke(Color.color(0.06, 0.03, 0.01, 1.0));
+            gc.setLineWidth(1.2);
+            gc.strokeLine(x, boardStartY, x, boardEndY);
         }
 
-        for (int i = 0; i < BOARD_SIZE; i++) {
-            for (int j = 0; j < BOARD_SIZE; j++) {
-                if (board[i][j] != Stone.EMPTY) {
-                    drawStone(gc, i, j, board[i][j]);
+        // Coordenadas alrededor del tablero
+        drawCoordinates(gc, boardStartX, boardStartY, boardEndX, boardEndY);
+
+        // Puntos hoshizashi mejor integrados
+        gc.setFill(Color.color(0.04, 0.02, 0.01, 1.0));
+        int[] stars = {2, 4, 6};
+        for (int i : stars) {
+            for (int j : stars) {
+                double px = getIntersectionX(i);
+                double py = getIntersectionY(j);
+                gc.fillOval(px - 3, py - 3, 6, 6);
+                gc.setStroke(Color.color(0, 0, 0, 0.18));
+                gc.setLineWidth(0.6);
+                gc.strokeOval(px - 4, py - 4, 8, 8);
+            }
+        }
+
+        // Dibujar piedras actuales (usa drawStone)
+        for (int r = 0; r < BOARD_SIZE; r++) {
+            for (int c = 0; c < BOARD_SIZE; c++) {
+                if (board[r][c] != Stone.EMPTY) {
+                    drawStone(gc, r, c, board[r][c]);
                 }
             }
         }
     }
 
     private void drawStone(GraphicsContext gc, int row, int col, Stone stone) {
-        double x = CELL_SIZE / 2 + col * CELL_SIZE;
-        double y = CELL_SIZE / 2 + row * CELL_SIZE;
-        double radius = CELL_SIZE / 2 - 2;
-        
+        double x = getIntersectionX(col);
+        double y = getIntersectionY(row);
+        double radius = CELL_SIZE / 2 - 3;
+
         if (stone == Stone.BLACK) {
-            // Sombra
-            gc.setFill(Color.color(0, 0, 0, 0.3));
-            gc.fillOval(x - radius + 2, y - radius + 3, radius * 2, radius * 2);
-            
-            // Base oscura
-            gc.setFill(Color.color(0.2, 0.2, 0.2, 1.0));
+            // sombra proyectada
+            gc.setFill(Color.color(0, 0, 0, 0.28));
+            gc.fillOval(x - radius + 2, y - radius + 3, radius * 1.9, radius * 1.9);
+
+            // gradiente radial para dar volumen
+            RadialGradient blackGrad = new RadialGradient(
+                    45, 0.1,
+                    x - radius * 0.15, y - radius * 0.2,
+                    radius * 1.05, false, CycleMethod.NO_CYCLE,
+                    new Stop(0.0, Color.web("#6e6e6e")),
+                    new Stop(0.4, Color.web("#222222")),
+                    new Stop(1.0, Color.web("#000000"))
+            );
+            gc.setFill(blackGrad);
             gc.fillOval(x - radius, y - radius, radius * 2, radius * 2);
-            
-            // Superficie negra principal
-            gc.setFill(Color.BLACK);
-            gc.fillOval(x - radius + 1, y - radius + 1, radius * 2 - 2, radius * 2 - 2);
-            
-            // Destello/brillo
-            double shine_x = x - radius + radius * 0.3;
-            double shine_y = y - radius + radius * 0.3;
-            gc.setFill(Color.color(0.3, 0.3, 0.3, 0.4));
-            gc.fillOval(shine_x, shine_y, radius * 0.8, radius * 0.8);
+
+            // highlight suave (brillo)
+            RadialGradient shine = new RadialGradient(
+                    45, 0.2,
+                    x - radius * 0.25, y - radius * 0.3,
+                    radius * 0.6, false, CycleMethod.NO_CYCLE,
+                    new Stop(0.0, Color.color(1, 1, 1, 0.9)),
+                    new Stop(0.4, Color.color(1, 1, 1, 0.25)),
+                    new Stop(1.0, Color.color(1, 1, 1, 0.0))
+            );
+            gc.setGlobalAlpha(1.0);
+            gc.setFill(shine);
+            gc.fillOval(x - radius * 0.2, y - radius * 0.25, radius * 1.2, radius * 1.2);
+
+            // borde ligero para definición
+            gc.setStroke(Color.color(0, 0, 0, 0.45));
+            gc.setLineWidth(0.6);
+            gc.strokeOval(x - radius, y - radius, radius * 2, radius * 2);
+
         } else {
-            // Sombra para piedra blanca
-            gc.setFill(Color.color(0, 0, 0, 0.2));
-            gc.fillOval(x - radius + 2, y - radius + 3, radius * 2, radius * 2);
-            
-            // Base gris claro
-            gc.setFill(Color.color(0.95, 0.95, 0.95, 1.0));
+            // piedra blanca: sombra más suave
+            gc.setFill(Color.color(0.06, 0.06, 0.06, 0.14));
+            gc.fillOval(x - radius + 1.8, y - radius + 2.6, radius * 1.95, radius * 1.95);
+
+            // base con degradado radial cálido
+            RadialGradient whiteGrad = new RadialGradient(
+                    45, 0.12,
+                    x - radius * 0.12, y - radius * 0.18,
+                    radius * 1.05, false, CycleMethod.NO_CYCLE,
+                    new Stop(0.0, Color.web("#ffffff")),
+                    new Stop(0.6, Color.web("#f2f2f2")),
+                    new Stop(1.0, Color.web("#d1d1d1"))
+            );
+            gc.setFill(whiteGrad);
             gc.fillOval(x - radius, y - radius, radius * 2, radius * 2);
-            
-            // Superficie blanca
-            gc.setFill(Color.WHITE);
-            gc.fillOval(x - radius + 1, y - radius + 1, radius * 2 - 2, radius * 2 - 2);
-            
-            // Borde gris oscuro
-            gc.setStroke(Color.color(0.7, 0.7, 0.7, 1.0));
-            gc.setLineWidth(1.5);
-            gc.strokeOval(x - radius + 1, y - radius + 1, radius * 2 - 2, radius * 2 - 2);
-            
-            // Destello/brillo en la piedra blanca
-            double shine_x = x - radius + radius * 0.35;
-            double shine_y = y - radius + radius * 0.35;
-            gc.setFill(Color.color(1.0, 1.0, 1.0, 0.6));
-            gc.fillOval(shine_x, shine_y, radius * 0.7, radius * 0.7);
+
+            // borde suave gris
+            gc.setStroke(Color.color(0.6, 0.6, 0.6, 0.6));
+            gc.setLineWidth(0.9);
+            gc.strokeOval(x - radius + 0.4, y - radius + 0.4, radius * 2 - 0.8, radius * 2 - 0.8);
+
+            // highlights blancos
+            RadialGradient whiteShine = new RadialGradient(
+                    45, 0.2,
+                    x - radius * 0.2, y - radius * 0.25,
+                    radius * 0.5, false, CycleMethod.NO_CYCLE,
+                    new Stop(0.0, Color.color(1, 1, 1, 0.95)),
+                    new Stop(0.6, Color.color(1, 1, 1, 0.45)),
+                    new Stop(1.0, Color.color(1, 1, 1, 0.0))
+            );
+            gc.setFill(whiteShine);
+            gc.fillOval(x - radius * 0.15, y - radius * 0.18, radius * 0.95, radius * 0.95);
+
+            // textura sutil
+            gc.setFill(Color.color(0.8, 0.8, 0.8, 0.05));
+            gc.fillOval(x - radius + 2, y - radius + 2, radius * 1.4, radius * 1.4);
         }
     }
 
@@ -157,9 +269,11 @@ private void onBoardClick(MouseEvent event) {
 
         double x = event.getX();
         double y = event.getY();
+        double boardStartX = getBoardStartX();
+        double boardStartY = getBoardStartY();
 
-        int col = (int) Math.round((x - CELL_SIZE / 2) / CELL_SIZE);
-        int row = (int) Math.round((y - CELL_SIZE / 2) / CELL_SIZE);
+        int col = (int) Math.round((x - boardStartX) / CELL_SIZE);
+        int row = (int) Math.round((y - boardStartY) / CELL_SIZE);
 
         if (isValidPosition(row, col)) {
             placeStone(row, col);
@@ -289,6 +403,53 @@ public void setInitialScores(int score1, int score2) {
             updateScores();
         }
     }
+
+    private double getBoardStartX() {
+        return (boardCanvas.getWidth() - ((BOARD_SIZE - 1) * CELL_SIZE)) / 2.0;
+    }
+
+    private double getBoardStartY() {
+        return (boardCanvas.getHeight() - ((BOARD_SIZE - 1) * CELL_SIZE)) / 2.0;
+    }
+
+    private double getBoardEndX() {
+        return getBoardStartX() + ((BOARD_SIZE - 1) * CELL_SIZE);
+    }
+
+    private double getBoardEndY() {
+        return getBoardStartY() + ((BOARD_SIZE - 1) * CELL_SIZE);
+    }
+
+    private double getIntersectionX(int col) {
+        return getBoardStartX() + col * CELL_SIZE;
+    }
+
+    private double getIntersectionY(int row) {
+        return getBoardStartY() + row * CELL_SIZE;
+    }
+
+    private void drawCoordinates(GraphicsContext gc, double boardStartX, double boardStartY, double boardEndX, double boardEndY) {
+        String[] letters = {"A", "B", "C", "D", "E", "F", "G", "H", "J"};
+        gc.setFill(Color.color(0.22, 0.12, 0.05, 0.9));
+        gc.setFont(Font.font("System", 13));
+        gc.setTextAlign(TextAlignment.CENTER);
+        gc.setTextBaseline(javafx.geometry.VPos.CENTER);
+
+        double offset = 18;
+        for (int i = 0; i < BOARD_SIZE; i++) {
+            double x = getIntersectionX(i);
+            double y = getIntersectionY(i);
+
+            // Letras arriba y abajo
+            gc.fillText(letters[i], x, boardStartY - offset);
+            gc.fillText(letters[i], x, boardEndY + offset);
+
+            // Números a izquierda y derecha
+            String number = String.valueOf(BOARD_SIZE - i);
+            gc.fillText(number, boardStartX - offset, y);
+            gc.fillText(number, boardEndX + offset, y);
+        }
+    }
 }
 
 
diff --git a/src/main/java/es/iesquevedo/controller/LoginController.java b/src/main/java/es/iesquevedo/controller/LoginController.java
index f04d5f5..307a469 100644
--- a/src/main/java/es/iesquevedo/controller/LoginController.java
+++ b/src/main/java/es/iesquevedo/controller/LoginController.java
@@ -13,6 +13,7 @@
 
 import java.util.logging.Level;
 import java.util.logging.Logger;
+import es.iesquevedo.util.EmailUtils;
 
 /**
  * Controlador para la pantalla de login.
@@ -69,6 +70,13 @@ public void onLoginClicked() {
             return;
         }
 
+        // Validar formato de email (asegura que contenga '@' y estructura básica)
+        if (!EmailUtils.isValidEmail(email)) {
+            updateStatus("El email no tiene un formato válido. Ej: usuario@ejemplo.com", "error");
+            LOGGER.log(Level.WARNING, "Intento de login con email inválido: " + email);
+            return;
+        }
+
         if (password == null || password.trim().isEmpty()) {
             updateStatus("La contraseña no puede estar vacía", "error");
             LOGGER.log(Level.WARNING, "Intento de login sin contraseña");
@@ -162,5 +170,7 @@ private void updateStatus(String message, String type) {
             statusLabel.setTextFill(Color.BLACK);
         }
     }
+
+    // ...existing code...
 }
 
diff --git a/src/main/java/es/iesquevedo/util/EmailUtils.java b/src/main/java/es/iesquevedo/util/EmailUtils.java
new file mode 100644
index 0000000..4bb3726
--- /dev/null
+++ b/src/main/java/es/iesquevedo/util/EmailUtils.java
@@ -0,0 +1,18 @@
+package es.iesquevedo.util;
+
+public final class EmailUtils {
+    private EmailUtils() {}
+
+    /**
+     * Valida el formato básico del email (asegura presencia de '@' y dominio con TLD).
+     * No pretende ser una validación RFC completa, sino una comprobación práctica.
+     */
+    public static boolean isValidEmail(String email) {
+        if (email == null) return false;
+        email = email.trim();
+        // Regex simple y efectivo que exige: usuario@dominio.tld (TLD >= 2 caracteres)
+        String emailRegex = "^[A-Za-z0-9+_.-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,}$";
+        return email.matches(emailRegex);
+    }
+}
+
diff --git a/src/main/resources/fxml/Game.fxml b/src/main/resources/fxml/Game.fxml
index a5bd715..2bcf68a 100644
--- a/src/main/resources/fxml/Game.fxml
+++ b/src/main/resources/fxml/Game.fxml
@@ -4,6 +4,7 @@
 <?import javafx.scene.control.Label?>
 <?import javafx.scene.layout.BorderPane?>
 <?import javafx.scene.layout.HBox?>
+<?import javafx.scene.layout.StackPane?>
 <?import javafx.scene.layout.VBox?>
 <?import javafx.scene.canvas.Canvas?>
 
@@ -54,15 +55,17 @@
 
     <!-- CENTER: Tablero -->
     <center>
-        <VBox spacing="10" alignment="CENTER" style="-fx-background-color: #F0F0F0;">
+        <StackPane alignment="CENTER"
+                   style="-fx-background-color: linear-gradient(to bottom, #F7F2E8, #E7DFD0); -fx-border-color: rgba(0,0,0,0.12); -fx-border-width: 1; -fx-border-radius: 12; -fx-background-radius: 12; -fx-effect: dropshadow(gaussian, rgba(0,0,0,0.22), 18, 0.18, 0, 6);">
             <padding>
                 <Insets top="15" bottom="15" left="15" right="15"/>
             </padding>
-            
-             <!-- Canvas para el tablero -->
+
+            <!-- Canvas para el tablero centrado -->
             <Canvas fx:id="boardCanvas" width="550" height="550"
-                    style="-fx-border-color: #000000; -fx-border-width: 1;"/>
-        </VBox>
+                    style="-fx-border-color: #000000; -fx-border-width: 1;"
+                    StackPane.alignment="CENTER"/>
+        </StackPane>
     </center>
 
     <!-- BOTTOM: Controles -->
diff --git a/src/test/java/es/iesquevedo/controller/LoginControllerEmailValidationTest.java b/src/test/java/es/iesquevedo/controller/LoginControllerEmailValidationTest.java
new file mode 100644
index 0000000..a8e3a63
--- /dev/null
+++ b/src/test/java/es/iesquevedo/controller/LoginControllerEmailValidationTest.java
@@ -0,0 +1,27 @@
+package es.iesquevedo.controller;
+
+import es.iesquevedo.util.EmailUtils;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class LoginControllerEmailValidationTest {
+
+    @Test
+    public void testValidEmails() {
+        assertTrue(EmailUtils.isValidEmail("usuario@ejemplo.com"));
+        assertTrue(EmailUtils.isValidEmail("u.ser+tag-123@sub.dominio.org"));
+        assertTrue(EmailUtils.isValidEmail("nombre.apellido@dominio.co"));
+    }
+
+    @Test
+    public void testInvalidEmails() {
+        assertFalse(EmailUtils.isValidEmail("sinArroba.ejemplo.com"));
+        assertFalse(EmailUtils.isValidEmail("mal@dominio")); // sin TLD
+        assertFalse(EmailUtils.isValidEmail("mal@.com"));
+        assertFalse(EmailUtils.isValidEmail(" "));
+        assertFalse(EmailUtils.isValidEmail(null));
+    }
+}
+
+