diff --git a/app/src/main/java/com/example/maposition/MainActivity.kt b/app/src/main/java/com/example/maposition/MainActivity.kt
index ccb05b1..8398c47 100644
--- a/app/src/main/java/com/example/maposition/MainActivity.kt
+++ b/app/src/main/java/com/example/maposition/MainActivity.kt
@@ -13,6 +13,7 @@ import android.content.res.ColorStateList
 import android.graphics.Color
 import android.graphics.Typeface
 import android.location.Location
+import android.net.Uri
 import android.os.Build
 import android.os.Bundle
 import android.os.Handler
@@ -97,6 +98,9 @@ class MainActivity : AppCompatActivity() {
 
         sendButton.setOnClickListener { startSendFlow() }
         findViewById<MaterialCardView>(R.id.recipientsCard).setOnClickListener { openSettings() }
+        findViewById<View>(R.id.emergencyButton).setOnClickListener {
+            startActivity(Intent(Intent.ACTION_DIAL, Uri.parse("tel:112")))
+        }
     }
 
     override fun onResume() {
@@ -122,9 +126,11 @@ class MainActivity : AppCompatActivity() {
 
         if (groups.isEmpty()) {
             groupChips.visibility = View.GONE
+            recipientsText.visibility = View.VISIBLE
             recipientsText.text = getString(R.string.recipients_none)
             return
         }
+        recipientsText.visibility = View.GONE
 
         groupChips.visibility = View.VISIBLE
         val active = Prefs.getActiveGroup(this)!!
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 8cb62ff..074c747 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -90,12 +90,14 @@
         android:id="@+id/recipientsCard"
         android:layout_width="0dp"
         android:layout_height="wrap_content"
-        android:layout_margin="20dp"
+        android:layout_marginStart="20dp"
+        android:layout_marginEnd="20dp"
+        android:layout_marginBottom="12dp"
         android:clickable="true"
         android:focusable="true"
         app:cardCornerRadius="18dp"
         app:cardElevation="3dp"
-        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintBottom_toTopOf="@id/emergencyButton"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent">
 
@@ -103,7 +105,10 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:orientation="vertical"
-            android:padding="16dp">
+            android:paddingStart="16dp"
+            android:paddingTop="10dp"
+            android:paddingEnd="16dp"
+            android:paddingBottom="10dp">
 
             <LinearLayout
                 android:layout_width="match_parent"
@@ -111,39 +116,49 @@
                 android:gravity="center_vertical"
                 android:orientation="horizontal">
 
-                <TextView
+                <com.google.android.material.chip.ChipGroup
+                    android:id="@+id/groupChips"
                     android:layout_width="0dp"
                     android:layout_height="wrap_content"
                     android:layout_weight="1"
-                    android:text="@string/recipients_label"
-                    android:textColor="?attr/colorOnSurfaceVariant"
-                    android:textSize="13sp"
-                    android:textStyle="bold" />
+                    app:chipSpacingVertical="0dp"
+                    app:singleLine="false"
+                    app:singleSelection="true" />
 
                 <ImageView
-                    android:layout_width="20dp"
-                    android:layout_height="20dp"
+                    android:layout_width="22dp"
+                    android:layout_height="22dp"
+                    android:layout_marginStart="8dp"
                     android:importantForAccessibility="no"
                     android:src="@drawable/ic_settings"
                     app:tint="?attr/colorOnSurfaceVariant" />
             </LinearLayout>
 
-            <com.google.android.material.chip.ChipGroup
-                android:id="@+id/groupChips"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:layout_marginTop="4dp"
-                app:chipSpacingVertical="0dp"
-                app:singleLine="false"
-                app:singleSelection="true" />
-
             <TextView
                 android:id="@+id/recipientsText"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:layout_marginTop="4dp"
-                android:textSize="15sp" />
+                android:textSize="15sp"
+                android:visibility="gone" />
         </LinearLayout>
     </com.google.android.material.card.MaterialCardView>
 
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/emergencyButton"
+        android:layout_width="0dp"
+        android:layout_height="64dp"
+        android:layout_marginStart="20dp"
+        android:layout_marginEnd="20dp"
+        android:layout_marginBottom="16dp"
+        android:text="@string/emergency_call"
+        android:textColor="@color/white"
+        android:textSize="17sp"
+        android:textStyle="bold"
+        app:backgroundTint="@color/emergency_red"
+        app:cornerRadius="20dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index c84e7a6..ec8819e 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -3,5 +3,6 @@
     <color name="black">#FF000000</color>
     <color name="white">#FFFFFFFF</color>
     <color name="brand_blue">#1A73E8</color>
+    <color name="emergency_red">#C62828</color>
     <color name="icon_bg">#708164</color>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index e83bdf1..492f33e 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -5,6 +5,7 @@
 
     <!-- Écran principal -->
     <string name="send_button">ENVOYER\nMA POSITION</string>
+    <string name="emergency_call">🚨 APPEL URGENCES — 112</string>
     <string name="recipients_label">Groupe de destinataires — toucher pour gérer</string>
     <string name="recipients_none">Aucun groupe de destinataires.\nTouchez ici pour en créer un.</string>