diff --git a/src/main/resources/templates/index.html b/src/main/resources/templates/index.html
index d82bb68..138920a 100644
--- a/src/main/resources/templates/index.html
+++ b/src/main/resources/templates/index.html
@@ -128,10 +128,48 @@
                             options: {
                                 responsive: true,
                                 maintainAspectRatio: false,
-                                plugins: { legend: { display: false } },
+                                // --- NOUVELLES OPTIONS DE PRÉCISION ---
+                                interaction: {
+                                    mode: 'index',     // Détecte le point le plus proche sur l'axe X
+                                    intersect: false,  // Pas besoin d'être pile sur le point pour l'activer
+                                },
+                                hover: {
+                                    mode: 'index',
+                                    intersect: false
+                                },
+                                // ---------------------------------------
+                                plugins: {
+                                    legend: { display: false },
+                                    tooltip: {
+                                        enabled: true,
+                                        backgroundColor: '#1f2937',
+                                        titleColor: '#9ca3af',
+                                        bodyColor: '#3b82f6',
+                                        bodyFont: { weight: 'bold', size: 14 },
+                                        borderColor: '#374151',
+                                        borderWidth: 1,
+                                        padding: 12,
+                                        displayColors: false,
+                                        callbacks: {
+                                            label: function(context) {
+                                                return context.parsed.y + ' €';
+                                            }
+                                        }
+                                    }
+                                },
                                 scales: {
-                                    y: { display: false, beginAtZero: false },
-                                    x: { grid: { display: false }, ticks: { color: '#4b5563', font: {size: 9} } }
+                                    y: {
+                                        display: false,
+                                        beginAtZero: false
+                                    },
+                                    x: {
+                                        grid: { display: false },
+                                        ticks: {
+                                            color: '#4b5563',
+                                            font: { size: 9 },
+                                            maxRotation: 0
+                                        }
+                                    }
                                 }
                             }
                         });
@@ -146,7 +184,6 @@
                         .then(data => {
                             if (!data.length) return;
                             fullData = data;
-
                             // Maj des stats
                             const prices = data.map(d => d.price);
                             document.getElementById('price-now-' + pid).innerText = prices[prices.length-1] + ' €';