diff --git a/apk/controller/app/src/main/java/org/iiab/controller/MainActivity.java b/apk/controller/app/src/main/java/org/iiab/controller/MainActivity.java
index 2d6fc35..530968e 100644
--- a/apk/controller/app/src/main/java/org/iiab/controller/MainActivity.java
+++ b/apk/controller/app/src/main/java/org/iiab/controller/MainActivity.java
@@ -112,12 +112,16 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
 
     // Cassette Deck UI
     private LinearLayout deckContainer;
-    private Button btnServerControl;
+    private ProgressButton btnServerControl;
     private ObjectAnimator fusionAnimator;
     private android.animation.ObjectAnimator exploreAnimator;
     private boolean isServerAlive = false;
     private boolean isNegotiating = false;
     private boolean isProxyDegraded = false;
+    private Boolean targetServerState = null;
+    private String serverTransitionText = "";
+    private final Handler timeoutHandler = new Handler(android.os.Looper.getMainLooper());
+    private Runnable timeoutRunnable;
     private String currentTargetUrl = null;
     private long pulseStartTime = 0;
 
@@ -271,14 +275,7 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
         // Listeners
         watchdogControl.setOnClickListener(v -> {
             boolean willBeEnabled = !prefs.getWatchdogEnable();
-            if (willBeEnabled) {
-                BiometricHelper.prompt(MainActivity.this,
-                        getString(R.string.unlock_watchdog_title),
-                        getString(R.string.unlock_watchdog_subtitle),
-                        () -> setWatchdogState(true));
-            } else {
-                setWatchdogState(false);
-            }
+            setWatchdogState(willBeEnabled);
         });
         btnClearLog.setOnClickListener(this);
         btnCopyLog.setOnClickListener(this);
@@ -294,30 +291,42 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
         button_save.setOnClickListener(this);
 
         btnServerControl.setOnClickListener(v -> {
-            // We're simplifying the action for now to test
-            if (btnServerControl.getText().toString().contains("Launch")) {
-                btnServerControl.setText("Starting...");
-                btnServerControl.setAlpha(0.7f); // Efecto visual de "Cargando"
+            // Ignore clicks if we are already waiting for a state change
+            if (targetServerState != null) return;
+
+            // Freeze the transition text and define the TARGET state
+            serverTransitionText = !isServerAlive ? "Booting..." : "Shutting down...";
+            targetServerState = !isServerAlive;
+
+            // Lock the UI and start infinite animation
+            updateUIColorsAndVisibility();
+            btnServerControl.startProgress();
+
+            // Set a hard timeout (45 seconds) as a safety net
+            timeoutRunnable = () -> {
+                if (targetServerState != null) {
+                    targetServerState = null; // Abort transition
+                    btnServerControl.stopProgress();
+                    updateUIColorsAndVisibility();
+                    addToLog("Warning: Server state transition timed out.");
+                }
+            };
+            timeoutHandler.postDelayed(timeoutRunnable, 45000);
+
+            // Execute the corresponding script command
+            if (!isServerAlive) {
                 startTermuxEnvironmentVisible("--start");
             } else {
-                // TODO: We'll add the VPN biometric validation here later
-                btnServerControl.setText("Stopping...");
-                btnServerControl.setAlpha(0.7f);
                 startTermuxEnvironmentVisible("--stop");
 
-                // Automatically turn off the Watchdog if we take down the server.
-                if (prefs.getWatchdogEnable()) setWatchdogState(false);
+                // Turn off Watchdog gracefully when stopping the server manually
+                if (prefs.getWatchdogEnable()) {
+                    setWatchdogState(false);
+                }
             }
         });
 
         // Logic to open the WebView (PortalActivity)
-//        button_browse_content.setOnClickListener(v -> {
-//            Intent intent = new Intent(MainActivity.this, PortalActivity.class);
-//            // We tell the Portal exactly where to go
-//            String urlToLoad = prefs.getEnable() ? "http://box/home" : "http://localhost:8085/home";
-//            intent.putExtra("TARGET_URL", urlToLoad);
-//            startActivity(intent);
-//        });
         button_browse_content.setOnClickListener(v -> {
             if (currentTargetUrl != null) {
                 Intent intent = new Intent(MainActivity.this, PortalActivity.class);
@@ -442,7 +451,13 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
             // We evaluate the results
             isNegotiating = false;
             isServerAlive = boxAlive || localAlive;
-            isProxyDegraded = !boxAlive && localAlive; // Tunnel on, but proxy dead
+
+            // If VPN is ON but box/proxy is dead, the tunnel is degraded (Orange).
+            if (prefs.getEnable()) {
+                isProxyDegraded = !boxAlive;
+            } else {
+                isProxyDegraded = false;
+            }
 
             if (boxAlive) {
                 currentTargetUrl = "http://box/home";
@@ -690,7 +705,7 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
         }
 
         updateUI();
-        updateUIColorsAndVisibility(isServerAlive);
+        updateUIColorsAndVisibility();
     }
 
     private void handleControlClick() {
@@ -795,13 +810,20 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
             if (vpnOn) {
                 // The passive radar must also use the proxy to test the tunnel.
                 boxAlive = pingUrl("http://box/home", true);
-                isProxyDegraded = !boxAlive && localAlive;
+                isProxyDegraded = !boxAlive;
             } else {
                 isProxyDegraded = false;
             }
 
             isServerAlive = localAlive || boxAlive;
 
+            // STATE MACHINE: Has the target state been reached?
+            if (targetServerState != null && isServerAlive == targetServerState) {
+                targetServerState = null; // Transition complete!
+                timeoutHandler.removeCallbacks(timeoutRunnable); // Cancel safety net
+                runOnUiThread(() -> btnServerControl.stopProgress()); // Unlock button
+            }
+
             if (vpnOn && boxAlive) {
                 currentTargetUrl = "http://box/home";
             } else if (localAlive) {
@@ -818,120 +840,90 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
         boolean isVpnActive = prefs.getEnable();
         boolean isWatchdogOn = prefs.getWatchdogEnable();
 
-        // Draw island
+        // Draw island (Tunnel LED colors)
         if (dashboardManager != null) {
             dashboardManager.setTunnelState(isVpnActive, isProxyDegraded);
         }
 
-        // Draw main button
-        if (isVpnActive) {
-            button_control.setText(R.string.control_disable);
-            button_control.setBackgroundTintList(ContextCompat.getColorStateList(this, isServerAlive ? R.color.btn_vpn_on : R.color.btn_vpn_on_dim));
+        // Draw main VPN button (ESPW)
+        if (!isServerAlive) {
+            // Lock and dim the VPN button if there is no server to connect to
+            button_control.setEnabled(false);
+            if (isVpnActive) {
+                button_control.setText(R.string.control_disable);
+                button_control.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_vpn_on_dim));
+            } else {
+                button_control.setText(R.string.control_enable);
+                button_control.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_vpn_off_dim));
+            }
         } else {
-            button_control.setText(R.string.control_enable);
-            button_control.setBackgroundTintList(ContextCompat.getColorStateList(this, isServerAlive ? R.color.btn_vpn_off : R.color.btn_vpn_off_dim));
+            // Unlock if server is alive
+            button_control.setEnabled(true);
+            if (isVpnActive) {
+                button_control.setText(R.string.control_disable);
+                button_control.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_vpn_on));
+            } else {
+                button_control.setText(R.string.control_enable);
+                button_control.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_vpn_off));
+            }
         }
 
-        // 3. Draw Explore Content button
+        // Draw Explore Content button
+        // Ensure it is ALWAYS visible, never GONE
+        button_browse_content.setVisibility(View.VISIBLE);
+
         if (!isServerAlive) {
-            // State 1: Stopped
+            // State 1: Stopped (Greyed out)
             stopExplorePulse();
             button_browse_content.setEnabled(false);
             button_browse_content.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_explore_disabled));
             button_browse_content.setAlpha(1.0f);
-            button_browse_content.setTextColor(Color.parseColor("#888888")); // Texto grisáceo apagado
+            button_browse_content.setTextColor(Color.parseColor("#888888"));
         } else if (isNegotiating) {
-            // State 2: Negotiating
+            // State 3: Negotiating
             button_browse_content.setEnabled(true);
             button_browse_content.setTextColor(Color.WHITE);
-            // (El latido ya maneja la opacidad al 100%)
         } else {
+            // State: Alive
             stopExplorePulse();
             button_browse_content.setEnabled(true);
             button_browse_content.setTextColor(Color.WHITE);
             button_browse_content.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_explore_ready));
 
             if (isVpnActive && !isProxyDegraded) {
-                // State 5: All good
-                button_browse_content.setAlpha(1.0f);
-            } else {
-                // State 2: local or state 4
-                button_browse_content.setAlpha(0.6f);
-            }
-        }
-
-        // FUSION LOGIC - Watchdog
-        btnServerControl.setAlpha(1.0f);
-        if (isServerAlive) {
-            btnServerControl.setText("🛑 Stop Server");
-            if (isWatchdogOn) {
-                deckContainer.setBackgroundColor(Color.parseColor("#44FF9800"));
-                btnServerControl.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_watchdog_on));
-                watchdogControl.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_watchdog_on));
-            } else {
-                if (fusionAnimator == null || !fusionAnimator.isRunning()) deckContainer.setBackgroundColor(Color.TRANSPARENT);
-                btnServerControl.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_danger));
-                watchdogControl.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_watchdog_off));
-            }
-        } else {
-            deckContainer.setBackgroundColor(Color.TRANSPARENT);
-            btnServerControl.setText("🚀 Launch Server");
-            btnServerControl.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_success));
-            watchdogControl.setBackgroundTintList(ContextCompat.getColorStateList(this, isWatchdogOn ? R.color.btn_watchdog_on : R.color.btn_watchdog_off));
-        }
-    }
-
-    private void updateUIColorsAndVisibility(boolean isServerAlive) {
-        boolean isVpnActive = prefs.getEnable();
-
-        if (!isServerAlive) {
-            button_control.setEnabled(false); // Disable ESPW click
-            button_browse_content.setVisibility(View.GONE);
-            stopExplorePulse(); // We stop the animation if the server dies
-
-            if (isVpnActive) {
-                button_control.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_vpn_on_dim));
-            } else {
-                button_control.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_vpn_off_dim));
-            }
-        } else {
-            button_control.setEnabled(true); // Enable ESPW click
-            button_browse_content.setVisibility(View.VISIBLE);
-
-            // Heart rate and diluted color control
-            if (isVpnActive) {
+                button_browse_content.setAlpha(1.0f); // 100% Perfect state
                 startExplorePulse();
             } else {
-                stopExplorePulse();
+                button_browse_content.setAlpha(0.6f); // Watered down fallback state
             }
         }
-        // --- THE FUSION LOGIC (CASSETTE DECK) ---
-        boolean isWatchdogOn = prefs.getWatchdogEnable();
-        btnServerControl.setAlpha(1.0f); // Reset opacity
 
-        if (isServerAlive) {
-            btnServerControl.setText("🛑 Stop Server");
-
-            if (isWatchdogOn) {
-                // FUSION: Server alive + Watchdog active
-                // DELETED the stopFusionPulse() from here so the animation can live!
-                deckContainer.setBackgroundColor(Color.parseColor("#44FF9800")); // Bright border/background
-                btnServerControl.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_watchdog_on));
-                watchdogControl.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_watchdog_on));
-            } else {
-                // Sever alive, without Watchdog
-                if (fusionAnimator == null || !fusionAnimator.isRunning()) {
-                    deckContainer.setBackgroundColor(Color.TRANSPARENT);
-                }
-                btnServerControl.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_danger)); // Red
-                watchdogControl.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_watchdog_off));
-            }
+        // FUSION LOGIC (Watchdog & Server Control)
+        if (targetServerState != null) {
+            // STATE: COOL-OFF (Locked)
+            btnServerControl.setAlpha(0.6f);
+            btnServerControl.setText(serverTransitionText);
+            btnServerControl.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_explore_disabled));
         } else {
-            // Server offline
-            deckContainer.setBackgroundColor(Color.TRANSPARENT);
-            btnServerControl.setText("🚀 Launch Server");
-            btnServerControl.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_success)); // Verde
-            watchdogControl.setBackgroundTintList(ContextCompat.getColorStateList(this, isWatchdogOn ? R.color.btn_watchdog_on : R.color.btn_watchdog_off));
+            // STATE: NORMAL (Unlocked)
+            btnServerControl.setAlpha(1.0f);
+            if (isServerAlive) {
+                btnServerControl.setText("🛑 Stop Server");
+                if (isWatchdogOn) {
+                    deckContainer.setBackgroundColor(Color.parseColor("#44FF9800"));
+                    btnServerControl.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_watchdog_on));
+                    watchdogControl.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_watchdog_on));
+                } else {
+                    if (fusionAnimator == null || !fusionAnimator.isRunning()) deckContainer.setBackgroundColor(Color.TRANSPARENT);
+                    btnServerControl.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_danger));
+                    watchdogControl.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_watchdog_off));
+                }
+            } else {
+                deckContainer.setBackgroundColor(Color.TRANSPARENT);
+                btnServerControl.setText("🚀 Launch Server");
+                btnServerControl.setBackgroundTintList(ContextCompat.getColorStateList(this, R.color.btn_success));
+                watchdogControl.setBackgroundTintList(ContextCompat.getColorStateList(this, isWatchdogOn ? R.color.btn_watchdog_on : R.color.btn_watchdog_off));
+            }
         }
     }
 
diff --git a/apk/controller/app/src/main/java/org/iiab/controller/ProgressButton.java b/apk/controller/app/src/main/java/org/iiab/controller/ProgressButton.java
new file mode 100644
index 0000000..3a1bda7
--- /dev/null
+++ b/apk/controller/app/src/main/java/org/iiab/controller/ProgressButton.java
@@ -0,0 +1,147 @@
+package org.iiab.controller;
+
+import android.animation.ValueAnimator;
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Paint;
+import android.graphics.RectF;
+import android.graphics.Path;
+import android.util.AttributeSet;
+
+import androidx.core.content.ContextCompat;
+import androidx.appcompat.widget.AppCompatButton;
+
+public class ProgressButton extends AppCompatButton {
+
+    private Paint progressPaint;
+    private Paint progressBackgroundPaint;
+
+    private int progressColor;
+    private int progressBackgroundColor;
+    private Path clipPath;
+    private RectF rectF;
+    private float cornerRadius;
+    private int progressHeight;
+
+    // Animation variables
+    private float currentProgress = 0f;
+    private boolean isRunning = false;
+    private ValueAnimator animator;
+
+    public ProgressButton(Context context) {
+        super(context);
+        init(context, null);
+    }
+
+    public ProgressButton(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        init(context, attrs);
+    }
+
+    public ProgressButton(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+        init(context, attrs);
+    }
+
+    private void init(Context context, AttributeSet attrs) {
+        if (attrs != null) {
+            TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.ProgressButton, 0, 0);
+            try {
+                progressColor = a.getColor(R.styleable.ProgressButton_progressButtonColor, ContextCompat.getColor(context, R.color.btn_danger));
+                progressBackgroundColor = a.getColor(R.styleable.ProgressButton_progressButtonBackgroundColor, Color.parseColor("#44888888"));
+                progressHeight = a.getDimensionPixelSize(R.styleable.ProgressButton_progressButtonHeight, (int) (6 * getResources().getDisplayMetrics().density));
+                // Note: We no longer read 'duration' from XML because the animation is infinite.
+            } finally {
+                a.recycle();
+            }
+        } else {
+            // Safe defaults
+            progressColor = ContextCompat.getColor(context, R.color.btn_danger);
+            progressBackgroundColor = Color.parseColor("#44888888");
+            progressHeight = (int) (6 * getResources().getDisplayMetrics().density);
+        }
+
+        progressPaint = new Paint();
+        progressPaint.setColor(progressColor);
+        progressPaint.setStyle(Paint.Style.FILL);
+
+        progressBackgroundPaint = new Paint();
+        progressBackgroundPaint.setColor(progressBackgroundColor);
+        progressBackgroundPaint.setStyle(Paint.Style.FILL);
+
+        // Initialize clipping path variables
+        clipPath = new Path();
+        rectF = new RectF();
+        cornerRadius = 8 * getResources().getDisplayMetrics().density;
+    }
+
+    @Override
+    protected void onDraw(Canvas canvas) {
+        // Draw the background and text first
+        super.onDraw(canvas);
+
+        // Draw the progress bar constrained by the button's rounded corners
+        if (progressHeight > 0 && isRunning) {
+            int buttonWidth = getWidth();
+            int buttonHeight = getHeight();
+
+            // Calculate width based on the current animated float (0.0f to 1.0f)
+            int progressWidth = (int) (buttonWidth * currentProgress);
+
+            // 1. Prepare the rounded mask (matches the button's bounds)
+            rectF.set(0, 0, buttonWidth, buttonHeight);
+            clipPath.reset();
+            clipPath.addRoundRect(rectF, cornerRadius, cornerRadius, Path.Direction.CW);
+
+            // 2. Save canvas state and apply the mask
+            canvas.save();
+            canvas.clipPath(clipPath);
+
+            // 3. Draw the tracks
+            canvas.drawRect(0, buttonHeight - progressHeight, buttonWidth, buttonHeight, progressBackgroundPaint);
+            canvas.drawRect(0, buttonHeight - progressHeight, progressWidth, buttonHeight, progressPaint);
+
+            // 4. Restore canvas
+            canvas.restore();
+        }
+    }
+
+    /**
+     * Starts an infinite cyclic animation (fills and empties the bar).
+     * Disables the button to prevent spam clicks.
+     */
+    public void startProgress() {
+        if (isRunning) return;
+        isRunning = true;
+        setEnabled(false); // Lock the button immediately
+
+        // Create an animator that goes from 0.0 to 1.0 (empty to full)
+        animator = ValueAnimator.ofFloat(0f, 1f);
+        animator.setDuration(1200); // 1.2 seconds per sweep
+        animator.setRepeatMode(ValueAnimator.REVERSE); // Fill up, then empty down
+        animator.setRepeatCount(ValueAnimator.INFINITE); // Never stop until commanded
+
+        animator.addUpdateListener(animation -> {
+            currentProgress = (float) animation.getAnimatedValue();
+            invalidate(); // Force redraw on every frame
+        });
+
+        animator.start();
+    }
+
+    /**
+     * Stops the animation, clears the bar, and unlocks the button.
+     * To be called by the Controller when the backend confirms the state change.
+     */
+    public void stopProgress() {
+        if (animator != null && animator.isRunning()) {
+            animator.cancel();
+        }
+        isRunning = false;
+        setEnabled(true); // Unlock button
+        currentProgress = 0f; // Reset width
+        invalidate(); // Clear the bar visually
+    }
+}
\ No newline at end of file
diff --git a/apk/controller/app/src/main/res/layout/main.xml b/apk/controller/app/src/main/res/layout/main.xml
index cc23211..7ae5401 100644
--- a/apk/controller/app/src/main/res/layout/main.xml
+++ b/apk/controller/app/src/main/res/layout/main.xml
@@ -343,7 +343,7 @@
                 android:baselineAligned="false"
                 android:weightSum="2">
 
-                <Button
+                <org.iiab.controller.ProgressButton
                     android:id="@+id/btn_server_control"
                     android:layout_width="0dp"
                     android:layout_height="80dp"
@@ -355,7 +355,12 @@
                     android:textColor="#FFFFFF"
                     android:background="@drawable/rounded_button"
                     android:backgroundTint="@color/btn_success"
-                    android:textAllCaps="false"/>
+                    android:textAllCaps="false"
+
+                    app:progressButtonHeight="6dp"
+                    app:progressButtonDuration="@integer/server_cool_off_duration_ms"
+                    app:progressButtonColor="#FF9800" />
+
                 <Button
                     android:id="@+id/watchdog_control"
                     android:layout_width="0dp"
diff --git a/apk/controller/app/src/main/res/values/attrs.xml b/apk/controller/app/src/main/res/values/attrs.xml
index 448cecf..d5c04fa 100644
--- a/apk/controller/app/src/main/res/values/attrs.xml
+++ b/apk/controller/app/src/main/res/values/attrs.xml
@@ -2,4 +2,10 @@
 <resources>
     <attr name="sectionBackground" format="color" />
     <attr name="sectionHeaderBackground" format="color" />
+    <declare-styleable name="ProgressButton">
+        <attr name="progressButtonColor" format="color" />
+        <attr name="progressButtonBackgroundColor" format="color" />
+        <attr name="progressButtonHeight" format="dimension" />
+        <attr name="progressButtonDuration" format="integer" />
+    </declare-styleable>
 </resources>
diff --git a/apk/controller/app/src/main/res/values/integers.xml b/apk/controller/app/src/main/res/values/integers.xml
new file mode 100644
index 0000000..a6d0a89
--- /dev/null
+++ b/apk/controller/app/src/main/res/values/integers.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <integer name="server_cool_off_duration_ms">15000</integer>
+</resources>