diff --git a/assets/styles/app.css b/assets/styles/app.css
index 073d0f9..d76d27c 100644
--- a/assets/styles/app.css
+++ b/assets/styles/app.css
@@ -631,6 +631,78 @@ body {
     background: #fef2f2;
 }
 
+.abandon-wrapper {
+    position: relative;
+}
+
+.abandon-popover {
+    display: none;
+    position: absolute;
+    top: calc(100% + 8px);
+    left: 50%;
+    transform: translateX(-50%);
+    background: var(--surface);
+    border: 1px solid var(--border);
+    border-radius: var(--radius-md);
+    padding: 14px 16px;
+    box-shadow: 0 4px 16px var(--shadow-warm);
+    z-index: 100;
+    white-space: nowrap;
+}
+
+.abandon-popover.open {
+    display: block;
+}
+
+.abandon-popover-text {
+    margin: 0 0 10px;
+    font-size: 13px;
+    font-weight: 500;
+    color: var(--text);
+    text-align: center;
+}
+
+.abandon-popover-actions {
+    display: flex;
+    gap: 8px;
+    justify-content: center;
+}
+
+.btn-abandon-confirm {
+    padding: 6px 14px;
+    background: #dc2626;
+    color: #fff;
+    border: none;
+    border-radius: 100px;
+    font-family: 'Inter', sans-serif;
+    font-size: 12px;
+    font-weight: 600;
+    cursor: pointer;
+    transition: background 0.15s;
+}
+
+.btn-abandon-confirm:hover {
+    background: #b91c1c;
+}
+
+.btn-abandon-cancel {
+    padding: 6px 14px;
+    background: none;
+    color: var(--text);
+    border: 1.5px solid var(--border);
+    border-radius: 100px;
+    font-family: 'Inter', sans-serif;
+    font-size: 12px;
+    font-weight: 600;
+    cursor: pointer;
+    transition: border-color 0.15s, background 0.15s;
+}
+
+.btn-abandon-cancel:hover {
+    background: var(--surface-hover, #f5f5f5);
+    border-color: var(--text);
+}
+
 .game-start-container {
     display: flex;
     flex-direction: column;
diff --git a/templates/homepage/index.html.twig b/templates/homepage/index.html.twig
index bcbe3fb..6cbc65c 100644
--- a/templates/homepage/index.html.twig
+++ b/templates/homepage/index.html.twig
@@ -4,10 +4,37 @@
     {% if game %}
         <div class="game-container">
             <div class="game-actions">
-                <form method="post" action="{{ path('app_game_abandon', {id: game.id}) }}">
-                    <input type="hidden" name="_token" value="{{ csrf_token('game_abandon') }}">
-                    <button type="submit" class="btn btn-abandon">Abandonner</button>
-                </form>
+                <div class="abandon-wrapper">
+                    <button type="button" class="btn btn-abandon" id="abandon-trigger">Abandonner</button>
+                    <div class="abandon-popover" id="abandon-popover">
+                        <p class="abandon-popover-text">Êtes-vous sûr de vouloir abandonner ?</p>
+                        <div class="abandon-popover-actions">
+                            <form method="post" action="{{ path('app_game_abandon', {id: game.id}) }}">
+                                <input type="hidden" name="_token" value="{{ csrf_token('game_abandon') }}">
+                                <button type="submit" class="btn btn-abandon-confirm">Abandonner</button>
+                            </form>
+                            <button type="button" class="btn btn-abandon-cancel" id="abandon-cancel">Non, continuer</button>
+                        </div>
+                    </div>
+                </div>
+                <script>
+                    (function() {
+                        var trigger = document.getElementById('abandon-trigger');
+                        var popover = document.getElementById('abandon-popover');
+                        var cancel = document.getElementById('abandon-cancel');
+                        trigger.addEventListener('click', function() {
+                            popover.classList.toggle('open');
+                        });
+                        cancel.addEventListener('click', function() {
+                            popover.classList.remove('open');
+                        });
+                        document.addEventListener('click', function(e) {
+                            if (!popover.contains(e.target) && e.target !== trigger) {
+                                popover.classList.remove('open');
+                            }
+                        });
+                    })();
+                </script>
             </div>
 
             <div {{ react_component('GameGrid', {