diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index ea01b9d..44bf3a5 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -13,8 +13,8 @@ android {
         applicationId = "com.example.maposition"
         minSdk = 21
         targetSdk = 36
-        versionCode = 1
-        versionName = "1.0"
+        versionCode = 2
+        versionName = "1.1"
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 128db57..928745c 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -7,12 +7,12 @@
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
 
     <application
-        android:label="Ma Position"
+        android:label="@string/app_name"
         android:icon="@mipmap/ic_launcher"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:allowBackup="true"
         android:supportsRtl="true"
-        android:theme="@style/Theme.AppCompat.Light"
+        android:theme="@style/Theme.MaPosition"
         >
 
         <activity android:name=".SettingsActivity" />
diff --git a/app/src/main/java/com/example/maposition/MainActivity.kt b/app/src/main/java/com/example/maposition/MainActivity.kt
index 36e6b5c..4dcabd4 100644
--- a/app/src/main/java/com/example/maposition/MainActivity.kt
+++ b/app/src/main/java/com/example/maposition/MainActivity.kt
@@ -1,111 +1,300 @@
 package com.example.maposition
 
 import android.Manifest
+import android.annotation.SuppressLint
+import android.app.Activity
+import android.app.PendingIntent
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.content.IntentFilter
 import android.content.pm.PackageManager
 import android.location.Location
+import android.os.Build
 import android.os.Bundle
+import android.os.Handler
+import android.os.Looper
+import android.os.SystemClock
 import android.telephony.SmsManager
-import android.widget.Button
-import android.widget.Toast
+import android.view.View
+import android.widget.ImageButton
+import android.widget.TextView
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.app.ActivityCompat
 import androidx.core.content.ContextCompat
-import com.google.android.gms.location.LocationCallback
-import com.google.android.gms.location.LocationRequest
-import com.google.android.gms.location.LocationResult
+import com.google.android.gms.location.FusedLocationProviderClient
 import com.google.android.gms.location.LocationServices
 import com.google.android.gms.location.Priority
+import com.google.android.gms.tasks.CancellationTokenSource
+import com.google.android.material.button.MaterialButton
+import com.google.android.material.card.MaterialCardView
+import com.google.android.material.progressindicator.CircularProgressIndicator
+import java.util.concurrent.TimeUnit
 
 class MainActivity : AppCompatActivity() {
 
+    companion object {
+        private const val ACTION_SMS_SENT = "com.example.maposition.SMS_SENT"
+        private const val EXTRA_RECIPIENT = "recipient"
+        private const val REQUEST_PERMISSIONS = 1
+        private const val LOCATION_TIMEOUT_MS = 10_000L
+        private const val SEND_STAGGER_MS = 500L
+        private const val REPORT_TIMEOUT_MS = 20_000L
+    }
+
     private val permissions = arrayOf(
         Manifest.permission.SEND_SMS,
         Manifest.permission.ACCESS_FINE_LOCATION
     )
 
-    private val REQUEST_ALL = 1
+    private val handler = Handler(Looper.getMainLooper())
 
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_main)
-        title = "Paramètres            ---->   "
-        val sendButton = findViewById<Button>(R.id.sendButton)
+    private lateinit var sendButton: MaterialButton
+    private lateinit var statusText: TextView
+    private lateinit var progress: CircularProgressIndicator
+    private lateinit var recipientsText: TextView
 
-        sendButton.setOnClickListener {
-            if (!hasPermissions()) {
-                ActivityCompat.requestPermissions(this, permissions, REQUEST_ALL)
+    // État d'un envoi en cours
+    private var busy = false
+    private var expectedReports = 0
+    private var receivedReports = 0
+    private var successCount = 0
+    private val failedNumbers = mutableListOf<String>()
+    private var reportTimeout: Runnable? = null
+
+    private val smsSentReceiver = object : BroadcastReceiver() {
+        override fun onReceive(context: Context, intent: Intent) {
+            if (!busy) return
+            val num = intent.getStringExtra(EXTRA_RECIPIENT) ?: "?"
+            receivedReports++
+            if (resultCode == Activity.RESULT_OK) successCount++ else failedNumbers.add(num)
+            if (receivedReports >= expectedReports) {
+                finishSending()
             } else {
-                getPreciseLocationAndSend()
+                setStatus(getString(R.string.status_sending_progress, receivedReports, expectedReports))
             }
         }
     }
 
-    private fun hasPermissions(): Boolean {
-        return permissions.all { perm ->
-            ContextCompat.checkSelfPermission(this, perm) == PackageManager.PERMISSION_GRANTED
-        }
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+
+        sendButton = findViewById(R.id.sendButton)
+        statusText = findViewById(R.id.statusText)
+        progress = findViewById(R.id.progress)
+        recipientsText = findViewById(R.id.recipientsText)
+
+        ContextCompat.registerReceiver(
+            this, smsSentReceiver, IntentFilter(ACTION_SMS_SENT),
+            ContextCompat.RECEIVER_NOT_EXPORTED
+        )
+
+        sendButton.setOnClickListener { startSendFlow() }
+        findViewById<ImageButton>(R.id.settingsButton).setOnClickListener { openSettings() }
+        findViewById<MaterialCardView>(R.id.recipientsCard).setOnClickListener { openSettings() }
+    }
+
+    override fun onResume() {
+        super.onResume()
+        refreshRecipientsCard()
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        unregisterReceiver(smsSentReceiver)
+        handler.removeCallbacksAndMessages(null)
+    }
+
+    private fun openSettings() {
+        startActivity(Intent(this, SettingsActivity::class.java))
     }
 
     private fun getSavedSettings(): Pair<String, List<String>> {
         val prefs = getSharedPreferences("MaPositionPrefs", MODE_PRIVATE)
         val name = prefs.getString("name", "") ?: ""
         val phones = prefs.getString("phones", "") ?: ""
-
         val phoneList = phones.split(";").map { it.trim() }.filter { it.isNotEmpty() }
         return Pair(name, phoneList)
     }
 
-    private fun getPreciseLocationAndSend() {
-        val fusedClient = LocationServices.getFusedLocationProviderClient(this)
-
-        val request = LocationRequest.Builder(Priority.PRIORITY_HIGH_ACCURACY, 2000)
-            .setMaxUpdates(1)
-            .build()
-
-        fusedClient.requestLocationUpdates(request, object : LocationCallback() {
-            override fun onLocationResult(result: LocationResult) {
-                val location: Location? = result.lastLocation
-                if (location != null) {
-                    sendSmsWithLocation(location)
-                } else {
-                    Toast.makeText(applicationContext, "Impossible d'obtenir la localisation", Toast.LENGTH_SHORT).show()
-                }
-                fusedClient.removeLocationUpdates(this)
-            }
-        }, mainLooper)
+    private fun refreshRecipientsCard() {
+        val (name, phones) = getSavedSettings()
+        recipientsText.text = if (phones.isEmpty()) {
+            getString(R.string.recipients_none)
+        } else {
+            val who = if (name.isBlank()) "" else "$name → "
+            who + phones.joinToString(", ")
+        }
     }
 
-    private fun sendSmsWithLocation(location: Location) {
-        val (name, phoneList) = getSavedSettings()
-
-        val lat = location.latitude
-        val lon = location.longitude
-        val link = "https://maps.google.com/?q=$lat,$lon"
-        val message = "Position de $name : $link"
-
-        if (phoneList.isEmpty()) {
-            Toast.makeText(this, "Aucun numéro enregistré", Toast.LENGTH_SHORT).show()
+    private fun startSendFlow() {
+        if (busy) return
+        val (_, phones) = getSavedSettings()
+        if (phones.isEmpty()) {
+            setStatus(getString(R.string.status_no_recipients))
+            openSettings()
             return
         }
-
-        val sms = SmsManager.getDefault()
-        phoneList.forEach { num ->
-            sms.sendTextMessage(num, null, message, null, null)
+        if (!hasPermissions()) {
+            ActivityCompat.requestPermissions(this, permissions, REQUEST_PERMISSIONS)
+        } else {
+            locateAndSend()
         }
-
-        Toast.makeText(this, "Localisation envoyée", Toast.LENGTH_SHORT).show()
     }
 
-    override fun onCreateOptionsMenu(menu: android.view.Menu?): Boolean {
-        menuInflater.inflate(R.menu.main_menu, menu)
-        return true
+    private fun hasPermissions(): Boolean = permissions.all { perm ->
+        ContextCompat.checkSelfPermission(this, perm) == PackageManager.PERMISSION_GRANTED
     }
 
-    override fun onOptionsItemSelected(item: android.view.MenuItem): Boolean {
-        if (item.itemId == R.id.menu_settings) {
-            startActivity(android.content.Intent(this, SettingsActivity::class.java))
-            return true
+    override fun onRequestPermissionsResult(
+        requestCode: Int, perms: Array<out String>, results: IntArray
+    ) {
+        super.onRequestPermissionsResult(requestCode, perms, results)
+        if (requestCode != REQUEST_PERMISSIONS) return
+        if (results.isNotEmpty() && results.all { it == PackageManager.PERMISSION_GRANTED }) {
+            locateAndSend()
+        } else {
+            setStatus(getString(R.string.status_need_permissions))
         }
-        return super.onOptionsItemSelected(item)
+    }
+
+    // --- Localisation : position fraîche, sinon repli sur la dernière connue ---
+
+    @SuppressLint("MissingPermission")
+    private fun locateAndSend() {
+        busy = true
+        resetReportState()
+        sendButton.isEnabled = false
+        progress.visibility = View.VISIBLE
+        setStatus(getString(R.string.status_locating))
+
+        val fused = LocationServices.getFusedLocationProviderClient(this)
+        val cts = CancellationTokenSource()
+        var settled = false
+
+        val timeout = Runnable {
+            if (!settled) {
+                settled = true
+                cts.cancel()
+                fallbackToLastLocation(fused)
+            }
+        }
+        handler.postDelayed(timeout, LOCATION_TIMEOUT_MS)
+
+        fused.getCurrentLocation(Priority.PRIORITY_HIGH_ACCURACY, cts.token)
+            .addOnSuccessListener { loc ->
+                if (settled) return@addOnSuccessListener
+                settled = true
+                handler.removeCallbacks(timeout)
+                if (loc != null) sendSmsWithLocation(loc, stale = false)
+                else fallbackToLastLocation(fused)
+            }
+            .addOnFailureListener {
+                if (settled) return@addOnFailureListener
+                settled = true
+                handler.removeCallbacks(timeout)
+                fallbackToLastLocation(fused)
+            }
+    }
+
+    @SuppressLint("MissingPermission")
+    private fun fallbackToLastLocation(fused: FusedLocationProviderClient) {
+        setStatus(getString(R.string.status_fallback))
+        fused.lastLocation
+            .addOnSuccessListener { loc ->
+                if (loc != null) sendSmsWithLocation(loc, stale = true)
+                else abort(getString(R.string.status_no_location))
+            }
+            .addOnFailureListener { abort(getString(R.string.status_no_location)) }
+    }
+
+    // --- Envoi des SMS avec accusé d'envoi et espacement ---
+
+    private fun smsManager(): SmsManager =
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
+            getSystemService(SmsManager::class.java)
+        } else {
+            @Suppress("DEPRECATION")
+            SmsManager.getDefault()
+        }
+
+    private fun sendSmsWithLocation(location: Location, stale: Boolean) {
+        val (name, phones) = getSavedSettings()
+
+        val link = "https://maps.google.com/?q=${location.latitude},${location.longitude}"
+        val ageMin = TimeUnit.MILLISECONDS.toMinutes(System.currentTimeMillis() - location.time)
+        val staleSuffix = if (stale && ageMin >= 2) getString(R.string.msg_stale_suffix, ageMin) else ""
+        val who = name.ifBlank { getString(R.string.msg_default_name) }.take(40)
+        val message = getString(R.string.msg_body, who, link) + staleSuffix
+
+        expectedReports = phones.size
+        setStatus(getString(R.string.status_sending_progress, 0, expectedReports))
+
+        val piFlags = PendingIntent.FLAG_ONE_SHOT or
+                (if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) PendingIntent.FLAG_IMMUTABLE else 0)
+        val requestBase = (SystemClock.elapsedRealtime() and 0xFFFFF).toInt()
+
+        phones.forEachIndexed { i, num ->
+            handler.postDelayed({
+                try {
+                    val sentIntent = Intent(ACTION_SMS_SENT)
+                        .setPackage(packageName)
+                        .putExtra(EXTRA_RECIPIENT, num)
+                    val pi = PendingIntent.getBroadcast(this, requestBase + i, sentIntent, piFlags)
+                    smsManager().sendTextMessage(num, null, message, pi, null)
+                } catch (e: Exception) {
+                    receivedReports++
+                    failedNumbers.add(num)
+                    if (receivedReports >= expectedReports) finishSending()
+                }
+            }, i * SEND_STAGGER_MS)
+        }
+
+        // Garde-fou : si l'opérateur ne confirme pas tous les envois, on conclut quand même
+        reportTimeout = Runnable { finishSending() }.also {
+            handler.postDelayed(it, phones.size * SEND_STAGGER_MS + REPORT_TIMEOUT_MS)
+        }
+    }
+
+    private fun finishSending() {
+        reportTimeout?.let { handler.removeCallbacks(it) }
+        reportTimeout = null
+        val unconfirmed = expectedReports - receivedReports
+        val status = when {
+            failedNumbers.isNotEmpty() ->
+                getString(
+                    R.string.status_sent_partial,
+                    successCount, expectedReports, failedNumbers.joinToString(", ")
+                )
+            unconfirmed > 0 ->
+                getString(R.string.status_sent_unconfirmed, successCount, unconfirmed)
+            else ->
+                getString(R.string.status_sent_ok, successCount)
+        }
+        resetUi()
+        setStatus(status)
+    }
+
+    private fun abort(message: String) {
+        resetUi()
+        setStatus(message)
+    }
+
+    private fun resetUi() {
+        busy = false
+        progress.visibility = View.GONE
+        sendButton.isEnabled = true
+    }
+
+    private fun resetReportState() {
+        expectedReports = 0
+        receivedReports = 0
+        successCount = 0
+        failedNumbers.clear()
+    }
+
+    private fun setStatus(text: String) {
+        statusText.text = text
     }
 }
diff --git a/app/src/main/java/com/example/maposition/SettingsActivity.kt b/app/src/main/java/com/example/maposition/SettingsActivity.kt
new file mode 100644
index 0000000..664a151
--- /dev/null
+++ b/app/src/main/java/com/example/maposition/SettingsActivity.kt
@@ -0,0 +1,57 @@
+package com.example.maposition
+
+import android.content.Context
+import android.os.Bundle
+import android.widget.ImageButton
+import android.widget.Toast
+import androidx.appcompat.app.AppCompatActivity
+import com.google.android.material.button.MaterialButton
+import com.google.android.material.textfield.TextInputEditText
+import com.google.android.material.textfield.TextInputLayout
+
+class SettingsActivity : AppCompatActivity() {
+
+    private val phoneRegex = Regex("""^\+?[0-9][0-9 .\-]{5,16}$""")
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_settings)
+
+        val prefs = getSharedPreferences("MaPositionPrefs", Context.MODE_PRIVATE)
+
+        val nameInput = findViewById<TextInputEditText>(R.id.nameInput)
+        val phonesLayout = findViewById<TextInputLayout>(R.id.phonesLayout)
+        val phonesInput = findViewById<TextInputEditText>(R.id.phonesInput)
+
+        nameInput.setText(prefs.getString("name", ""))
+        phonesInput.setText(prefs.getString("phones", ""))
+
+        findViewById<ImageButton>(R.id.backButton).setOnClickListener { finish() }
+
+        findViewById<MaterialButton>(R.id.saveButton).setOnClickListener {
+            val rawPhones = phonesInput.text.toString()
+            val phones = rawPhones.split(";").map { it.trim() }.filter { it.isNotEmpty() }
+
+            when {
+                phones.isEmpty() -> {
+                    phonesLayout.error = getString(R.string.error_no_phone)
+                    return@setOnClickListener
+                }
+                phones.any { !phoneRegex.matches(it) } -> {
+                    val bad = phones.first { !phoneRegex.matches(it) }
+                    phonesLayout.error = getString(R.string.error_bad_phone, bad)
+                    return@setOnClickListener
+                }
+            }
+            phonesLayout.error = null
+
+            prefs.edit()
+                .putString("name", nameInput.text.toString().trim())
+                .putString("phones", phones.joinToString(";"))
+                .apply()
+
+            Toast.makeText(this, getString(R.string.saved), Toast.LENGTH_SHORT).show()
+            finish()
+        }
+    }
+}
diff --git a/app/src/main/java/com/example/maposition/settingsActivity.kt b/app/src/main/java/com/example/maposition/settingsActivity.kt
deleted file mode 100644
index db920eb..0000000
--- a/app/src/main/java/com/example/maposition/settingsActivity.kt
+++ /dev/null
@@ -1,36 +0,0 @@
-package com.example.maposition
-
-import android.content.Context
-import androidx.appcompat.app.AppCompatActivity
-import android.os.Bundle
-import android.widget.Button
-import android.widget.EditText
-import android.widget.Toast
-
-class SettingsActivity : AppCompatActivity() {
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_settings)
-
-        val prefs = getSharedPreferences("MaPositionPrefs", Context.MODE_PRIVATE)
-
-        val nameInput = findViewById<EditText>(R.id.nameInput)
-        val phonesInput = findViewById<EditText>(R.id.phonesInput)
-        val saveButton = findViewById<Button>(R.id.saveButton)
-
-        // Charger valeurs déjà enregistrées
-        nameInput.setText(prefs.getString("name", ""))
-        phonesInput.setText(prefs.getString("phones", ""))
-
-        saveButton.setOnClickListener {
-            prefs.edit()
-                .putString("name", nameInput.text.toString())
-                .putString("phones", phonesInput.text.toString())
-                .apply()
-
-            Toast.makeText(this, "Paramètres enregistrés", Toast.LENGTH_SHORT).show()
-            finish()
-        }
-    }
-}
diff --git a/app/src/main/res/drawable/ic_back.xml b/app/src/main/res/drawable/ic_back.xml
new file mode 100644
index 0000000..bd35fa3
--- /dev/null
+++ b/app/src/main/res/drawable/ic_back.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M20,11H7.83l5.59,-5.59L12,4l-8,8 8,8 1.41,-1.41L7.83,13H20v-2z" />
+</vector>
diff --git a/app/src/main/res/drawable/ic_pin.xml b/app/src/main/res/drawable/ic_pin.xml
new file mode 100644
index 0000000..30cc6f0
--- /dev/null
+++ b/app/src/main/res/drawable/ic_pin.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M12,2C8.13,2 5,5.13 5,9c0,5.25 7,13 7,13s7,-7.75 7,-13C19,5.13 15.87,2 12,2zM12,11.5c-1.38,0 -2.5,-1.12 -2.5,-2.5s1.12,-2.5 2.5,-2.5s2.5,1.12 2.5,2.5S13.38,11.5 12,11.5z" />
+</vector>
diff --git a/app/src/main/res/drawable/ic_settings.xml b/app/src/main/res/drawable/ic_settings.xml
new file mode 100644
index 0000000..e50f6fe
--- /dev/null
+++ b/app/src/main/res/drawable/ic_settings.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M19.14,12.94c0.04,-0.3 0.06,-0.61 0.06,-0.94c0,-0.32 -0.02,-0.64 -0.07,-0.94l2.03,-1.58c0.18,-0.14 0.23,-0.41 0.12,-0.61l-1.92,-3.32c-0.12,-0.22 -0.37,-0.29 -0.59,-0.22l-2.39,0.96c-0.5,-0.38 -1.03,-0.7 -1.62,-0.94L14.4,2.81c-0.04,-0.24 -0.24,-0.41 -0.48,-0.41h-3.84c-0.24,0 -0.43,0.17 -0.47,0.41L9.25,5.35C8.66,5.59 8.12,5.92 7.63,6.29L5.24,5.33c-0.22,-0.08 -0.47,0 -0.59,0.22L2.74,8.87C2.62,9.08 2.66,9.34 2.86,9.48l2.03,1.58C4.84,11.36 4.8,11.69 4.8,12s0.02,0.64 0.07,0.94l-2.03,1.58c-0.18,0.14 -0.23,0.41 -0.12,0.61l1.92,3.32c0.12,0.22 0.37,0.29 0.59,0.22l2.39,-0.96c0.5,0.38 1.03,0.7 1.62,0.94l0.36,2.54c0.05,0.24 0.24,0.41 0.48,0.41h3.84c0.24,0 0.44,-0.17 0.47,-0.41l0.36,-2.54c0.59,-0.24 1.13,-0.56 1.62,-0.94l2.39,0.96c0.22,0.08 0.47,0 0.59,-0.22l1.92,-3.32c0.12,-0.22 0.07,-0.47 -0.12,-0.61L19.14,12.94zM12,15.6c-1.98,0 -3.6,-1.62 -3.6,-3.6s1.62,-3.6 3.6,-3.6s3.6,1.62 3.6,3.6S13.98,15.6 12,15.6z" />
+</vector>
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 9bb1156..3821c46 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -1,14 +1,108 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:orientation="vertical"
-    android:padding="20dp"
-    android:gravity="center"
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    android:padding="24dp">
 
-    <Button
+    <TextView
+        android:id="@+id/titleText"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:text="@string/app_name"
+        android:textSize="26sp"
+        android:textStyle="bold"
+        app:layout_constraintEnd_toStartOf="@id/settingsButton"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <ImageButton
+        android:id="@+id/settingsButton"
+        android:layout_width="48dp"
+        android:layout_height="48dp"
+        android:background="?attr/selectableItemBackgroundBorderless"
+        android:contentDescription="@string/settings_title"
+        android:src="@drawable/ic_settings"
+        app:layout_constraintBottom_toBottomOf="@id/titleText"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="@id/titleText"
+        app:tint="?attr/colorOnSurfaceVariant" />
+
+    <com.google.android.material.button.MaterialButton
         android:id="@+id/sendButton"
-        android:text="Envoyer ma position"
+        android:layout_width="240dp"
+        android:layout_height="240dp"
+        android:text="@string/send_button"
+        android:textColor="@color/white"
+        android:textSize="17sp"
+        android:textStyle="bold"
+        app:backgroundTint="@color/brand_blue"
+        app:cornerRadius="120dp"
+        app:icon="@drawable/ic_pin"
+        app:iconGravity="top"
+        app:iconSize="44dp"
+        app:iconTint="@color/white"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.38" />
+
+    <com.google.android.material.progressindicator.CircularProgressIndicator
+        android:id="@+id/progress"
         android:layout_width="wrap_content"
-        android:layout_height="wrap_content"/>
-</LinearLayout>
+        android:layout_height="wrap_content"
+        android:layout_marginTop="28dp"
+        android:indeterminate="true"
+        android:visibility="gone"
+        app:indicatorColor="@color/brand_blue"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/sendButton" />
+
+    <TextView
+        android:id="@+id/statusText"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="12dp"
+        android:gravity="center"
+        android:textSize="15sp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/progress" />
+
+    <com.google.android.material.card.MaterialCardView
+        android:id="@+id/recipientsCard"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:clickable="true"
+        android:focusable="true"
+        app:cardCornerRadius="16dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical"
+            android:padding="16dp">
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/recipients_label"
+                android:textSize="13sp"
+                android:textStyle="bold"
+                android:textColor="?attr/colorOnSurfaceVariant" />
+
+            <TextView
+                android:id="@+id/recipientsText"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="4dp"
+                android:textSize="15sp" />
+        </LinearLayout>
+    </com.google.android.material.card.MaterialCardView>
+
+</androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/app/src/main/res/layout/activity_settings.xml b/app/src/main/res/layout/activity_settings.xml
index 220c5a3..3b2eafd 100644
--- a/app/src/main/res/layout/activity_settings.xml
+++ b/app/src/main/res/layout/activity_settings.xml
@@ -1,28 +1,76 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:orientation="vertical"
-    android:padding="20dp"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="24dp">
 
-    <EditText
-        android:id="@+id/nameInput"
-        android:hint="Votre nom"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"/>
-
-    <EditText
-        android:id="@+id/phonesInput"
-        android:hint="Numéros destinataires (ex: 0611223344;0622334455)"
+    <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_marginTop="10dp"/>
+        android:gravity="center_vertical"
+        android:orientation="horizontal">
 
-    <Button
-        android:id="@+id/saveButton"
-        android:text="Enregistrer"
-        android:layout_marginTop="20dp"
+        <ImageButton
+            android:id="@+id/backButton"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            android:background="?attr/selectableItemBackgroundBorderless"
+            android:contentDescription="@string/back"
+            android:src="@drawable/ic_back"
+            app:tint="?attr/colorOnSurface" />
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="8dp"
+            android:text="@string/settings_title"
+            android:textSize="24sp"
+            android:textStyle="bold" />
+    </LinearLayout>
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/nameLayout"
+        style="@style/Widget.Material3.TextInputLayout.OutlinedBox"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"/>
+        android:layout_height="wrap_content"
+        android:layout_marginTop="32dp"
+        android:hint="@string/name_hint"
+        app:helperText="@string/name_helper">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/nameInput"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:inputType="textPersonName"
+            android:maxLength="40" />
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/phonesLayout"
+        style="@style/Widget.Material3.TextInputLayout.OutlinedBox"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="24dp"
+        android:hint="@string/phones_hint"
+        app:helperText="@string/phones_helper">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/phonesInput"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:inputType="text" />
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/saveButton"
+        android:layout_width="match_parent"
+        android:layout_height="56dp"
+        android:layout_marginTop="32dp"
+        android:text="@string/save"
+        android:textSize="16sp"
+        app:backgroundTint="@color/brand_blue"
+        app:cornerRadius="16dp" />
 
 </LinearLayout>
diff --git a/app/src/main/res/menu/main_menu.xml b/app/src/main/res/menu/main_menu.xml
deleted file mode 100644
index 7123c88..0000000
--- a/app/src/main/res/menu/main_menu.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<menu xmlns:android="http://schemas.android.com/apk/res/android">
-    <item
-        android:id="@+id/menu_settings"
-        android:title="Paramètres"
-        android:showAsAction="always" />
-</menu>
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index c8524cd..5bc45bb 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -2,4 +2,5 @@
 <resources>
     <color name="black">#FF000000</color>
     <color name="white">#FFFFFFFF</color>
+    <color name="brand_blue">#1A73E8</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 8544e8f..97f2d28 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1,3 +1,36 @@
 <resources>
-    <string name="app_name">MaPosition</string>
-</resources>
\ No newline at end of file
+    <string name="app_name">Ma Position</string>
+    <string name="settings_title">Paramètres</string>
+    <string name="back">Retour</string>
+
+    <!-- Écran principal -->
+    <string name="send_button">ENVOYER\nMA POSITION</string>
+    <string name="recipients_label">Destinataires — toucher pour modifier</string>
+    <string name="recipients_none">Aucun destinataire configuré.\nTouchez ici pour en ajouter.</string>
+
+    <!-- Statuts -->
+    <string name="status_locating">Recherche de votre position…</string>
+    <string name="status_fallback">GPS lent — utilisation de la dernière position connue…</string>
+    <string name="status_no_location">❌ Position introuvable. Vérifiez que la localisation est activée, puis réessayez.</string>
+    <string name="status_no_recipients">Ajoutez d\'abord un destinataire.</string>
+    <string name="status_need_permissions">❌ Les autorisations SMS et localisation sont nécessaires pour envoyer votre position.</string>
+    <string name="status_sending_progress">Envoi des SMS… (%1$d/%2$d)</string>
+    <string name="status_sent_ok">✅ Position envoyée à %1$d destinataire(s)</string>
+    <string name="status_sent_partial">⚠️ Envoyé à %1$d destinataire(s) sur %2$d.\nÉchec pour : %3$s</string>
+    <string name="status_sent_unconfirmed">✅ %1$d envoyé(s) — %2$d en attente de confirmation de l\'opérateur</string>
+
+    <!-- Message SMS -->
+    <string name="msg_body">Position de %1$s : %2$s</string>
+    <string name="msg_default_name">moi</string>
+    <string name="msg_stale_suffix">" (dernière position connue, il y a %1$d min)"</string>
+
+    <!-- Paramètres -->
+    <string name="name_hint">Votre nom</string>
+    <string name="name_helper">Apparaîtra dans le SMS envoyé</string>
+    <string name="phones_hint">Numéros destinataires</string>
+    <string name="phones_helper">Plusieurs numéros : séparez-les par un point-virgule. Ex : 0611223344;0622334455</string>
+    <string name="save">Enregistrer</string>
+    <string name="saved">Paramètres enregistrés</string>
+    <string name="error_no_phone">Saisissez au moins un numéro</string>
+    <string name="error_bad_phone">Numéro invalide : %1$s</string>
+</resources>