diff --git a/trazabilidad.html b/trazabilidad.html
index 2a8872a..646ee3b 100644
--- a/trazabilidad.html
+++ b/trazabilidad.html
@@ -7,58 +7,80 @@
     <script src="https://cdn.tailwindcss.com"></script>
     <script src="https://unpkg.com/lucide@latest"></script>
     <style>
-        .fade-in { animation: fadeIn 0.3s ease-in-out; }
-        @keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
+        .fade-in { animation: fadeIn 0.4s ease-out forwards; }
+        @keyframes fadeIn { 
+            from { opacity: 0; transform: translateY(15px); } 
+            to { opacity: 1; transform: translateY(0); } 
+        }
         .no-scrollbar::-webkit-scrollbar { display: none; }
         .no-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }
+        
+        /* Línea continua del timeline */
+        .timeline-line::before {
+            content: '';
+            position: absolute;
+            top: 0;
+            bottom: 0;
+            left: 23px; /* Ajuste fino para centrar la línea con los puntos */
+            width: 2px;
+            background: #e2e8f0; /* slate-200 */
+            z-index: 0;
+        }
     </style>
 </head>
 <body class="bg-slate-50 text-slate-800 font-sans h-screen flex flex-col overflow-hidden">
 
-    <header class="bg-white border-b border-slate-200 px-6 py-4 flex items-center justify-between shadow-sm z-10 shrink-0">
+    <header class="bg-white border-b border-slate-200 px-6 py-4 flex items-center justify-between shadow-sm z-20 shrink-0">
         <div class="flex items-center gap-4">
-            <button onclick="window.history.back()" class="p-2 bg-slate-100 text-slate-500 hover:bg-blue-100 hover:text-blue-600 rounded-xl transition-colors">
+            <button onclick="window.history.back()" class="p-2.5 bg-slate-100 text-slate-500 hover:bg-blue-100 hover:text-blue-600 rounded-xl transition-all shadow-sm active:scale-95">
                 <i data-lucide="arrow-left" class="w-5 h-5"></i>
             </button>
             <div>
-                <p class="text-[10px] font-black text-slate-400 uppercase tracking-widest">Trazabilidad del Expediente</p>
-                <h1 class="text-xl font-black text-slate-800 leading-none mt-1">#<span id="svcRef" class="text-blue-600">...</span></h1>
+                <p class="text-[10px] font-black text-slate-400 uppercase tracking-widest">Auditoría y Trazabilidad</p>
+                <h1 class="text-xl font-black text-slate-800 leading-none mt-1 flex items-center gap-2">
+                    Expediente <span id="svcRef" class="text-blue-600 px-2 py-0.5 bg-blue-50 rounded-lg">...</span>
+                </h1>
             </div>
         </div>
-        <div class="bg-blue-50 text-blue-600 px-3 py-1.5 rounded-lg border border-blue-100 flex items-center gap-2">
-            <i data-lucide="activity" class="w-4 h-4"></i>
-            <span class="text-xs font-bold" id="logCount">0 Registros</span>
+        <div class="bg-slate-800 text-white px-4 py-2 rounded-xl shadow-md flex items-center gap-2">
+            <i data-lucide="activity" class="w-4 h-4 text-emerald-400"></i>
+            <span class="text-xs font-black uppercase tracking-widest" id="logCount">0 Registros</span>
         </div>
     </header>
 
     <main class="flex-1 overflow-y-auto no-scrollbar p-6 md:p-10 relative">
-        <div class="max-w-2xl mx-auto">
+        <div class="max-w-3xl mx-auto">
             
-            <div class="bg-white p-5 rounded-[1.5rem] shadow-sm border border-slate-200 mb-8 fade-in flex gap-4">
-                <div class="w-10 h-10 bg-slate-100 rounded-full flex items-center justify-center text-slate-400 shrink-0">
-                    <i data-lucide="message-square-plus" class="w-5 h-5"></i>
-                </div>
-                <div class="flex-1">
-                    <input type="text" id="manualNoteInput" placeholder="Escribe un apunte o comentario para el registro..." class="w-full bg-slate-50 border border-slate-200 px-4 py-3 rounded-xl text-sm font-medium outline-none focus:bg-white focus:border-blue-500 focus:ring-2 focus:ring-blue-100 transition-all">
-                    <div class="flex justify-end mt-3">
-                        <button onclick="addManualNote()" class="bg-slate-800 hover:bg-slate-700 text-white text-xs font-black uppercase tracking-widest px-5 py-2.5 rounded-lg shadow transition-colors flex items-center gap-2 active:scale-95">
-                            Guardar Apunte <i data-lucide="send" class="w-3 h-3"></i>
-                        </button>
+            <div class="bg-white p-5 rounded-3xl shadow-sm border border-slate-200 mb-10 sticky top-0 z-10">
+                <div class="flex gap-4 items-start">
+                    <div class="w-12 h-12 bg-amber-50 rounded-full flex items-center justify-center text-amber-500 shrink-0 shadow-inner border border-amber-100">
+                        <i data-lucide="pen-tool" class="w-6 h-6"></i>
+                    </div>
+                    <div class="flex-1">
+                        <textarea id="manualNoteInput" rows="2" placeholder="Escribe un apunte interno, observación o nota para este expediente..." class="w-full bg-slate-50 border border-slate-200 px-4 py-3 rounded-2xl text-sm font-medium outline-none focus:bg-white focus:border-amber-400 focus:ring-4 focus:ring-amber-50 transition-all resize-none"></textarea>
+                        <div class="flex justify-end mt-3">
+                            <button onclick="addManualNote(this)" class="bg-amber-500 hover:bg-amber-600 text-white text-xs font-black uppercase tracking-widest px-6 py-2.5 rounded-xl shadow-md transition-all flex items-center gap-2 active:scale-95">
+                                Guardar Apunte <i data-lucide="send" class="w-4 h-4"></i>
+                            </button>
+                        </div>
                     </div>
                 </div>
             </div>
 
-            <div class="relative border-l-2 border-slate-200 ml-5 md:ml-8 space-y-8 pb-10" id="timelineContainer">
-                <div class="text-center text-slate-400 py-10 flex flex-col items-center">
-                    <i data-lucide="loader-2" class="w-8 h-8 animate-spin mb-3"></i>
-                    <p class="text-xs font-bold uppercase tracking-widest">Cargando historial...</p>
+            <div class="relative timeline-line ml-2 md:ml-4 pb-20" id="timelineContainer">
+                <div class="text-center text-slate-400 py-20 flex flex-col items-center relative z-10">
+                    <i data-lucide="loader-2" class="w-10 h-10 animate-spin mb-4 text-blue-500"></i>
+                    <p class="text-sm font-black uppercase tracking-widest text-slate-500">Recopilando historial...</p>
                 </div>
             </div>
 
         </div>
     </main>
 
+    <div id="toast" class="fixed bottom-8 right-8 bg-slate-900 text-white px-6 py-3 rounded-2xl shadow-2xl hidden z-[200] font-bold text-sm flex items-center gap-2 transition-all"></div>
+
     <script>
+        // Configuración de la API (Usa la misma variable que el resto de tu app si tienes layout.js)
         const API_URL = window.location.hostname === 'localhost' || window.location.hostname === '127.0.0.1' 
             ? 'http://localhost:3000' 
             : 'https://integrarepara-api.integrarepara.es';
@@ -67,16 +89,26 @@
 
         document.addEventListener("DOMContentLoaded", () => {
             lucide.createIcons();
+            
+            // Extraer el ID de la URL (Ejemplo: trazabilidad.html?id=15)
             const urlParams = new URLSearchParams(window.location.search);
             serviceId = urlParams.get('id');
+            const urlRef = urlParams.get('ref'); // Opcional, si le pasas la referencia en la URL
             
             if (!serviceId) {
-                document.getElementById('timelineContainer').innerHTML = '<p class="text-red-500">Error: No se ha indicado el expediente.</p>';
+                document.getElementById('timelineContainer').innerHTML = `
+                    <div class="bg-red-50 border border-red-200 text-red-600 p-8 rounded-3xl text-center relative z-10">
+                        <i data-lucide="alert-triangle" class="w-12 h-12 mx-auto mb-4 text-red-400"></i>
+                        <h2 class="text-lg font-black uppercase tracking-widest mb-2">Error de Identificación</h2>
+                        <p class="text-sm font-medium">No se ha indicado ningún ID de expediente válido en la URL.</p>
+                        <button onclick="window.history.back()" class="mt-6 bg-red-600 text-white px-6 py-2 rounded-xl font-bold hover:bg-red-700">Volver Atrás</button>
+                    </div>
+                `;
+                lucide.createIcons();
                 return;
             }
 
-            // Aquí podríamos cargar la referencia real del servicio, por ahora ponemos el ID
-            document.getElementById('svcRef').innerText = "SVC-" + serviceId;
+            document.getElementById('svcRef').innerText = urlRef ? urlRef : `#${serviceId}`;
             loadLogs();
         });
 
@@ -85,8 +117,8 @@
                 const res = await fetch(`${API_URL}/services/${serviceId}/logs`, {
                     headers: { "Authorization": `Bearer ${localStorage.getItem("token")}` }
                 });
-                const data = await res.json();
                 
+                const data = await res.json();
                 const container = document.getElementById('timelineContainer');
                 
                 if (!data.ok) throw new Error("Error cargando logs");
@@ -95,85 +127,124 @@
 
                 if (data.logs.length === 0) {
                     container.innerHTML = `
-                        <div class="absolute -left-1.5 top-0 w-3 h-3 bg-slate-200 rounded-full"></div>
-                        <div class="pl-8 pt-1">
-                            <p class="text-sm font-bold text-slate-400 italic">No hay actividad registrada aún para este expediente.</p>
+                        <div class="relative pl-14 pt-2 z-10">
+                            <div class="absolute left-[17px] top-4 w-3 h-3 bg-slate-300 rounded-full ring-4 ring-white"></div>
+                            <div class="bg-slate-100 border border-slate-200 p-6 rounded-2xl text-center">
+                                <p class="text-sm font-bold text-slate-500 italic">No hay actividad registrada aún para este expediente.</p>
+                            </div>
                         </div>
                     `;
                     return;
                 }
 
-                container.innerHTML = "";
+                container.innerHTML = ""; // Limpiamos
                 
                 data.logs.forEach((log, index) => {
                     const dateObj = new Date(log.created_at);
-                    const fecha = dateObj.toLocaleDateString('es-ES', { day: '2-digit', month: 'short', year: 'numeric' });
+                    
+                    // Formateo de fecha molón: "Hoy a las 10:00" o "12 Mar 2025"
+                    const hoy = new Date();
+                    const esHoy = dateObj.getDate() === hoy.getDate() && dateObj.getMonth() === hoy.getMonth() && dateObj.getFullYear() === hoy.getFullYear();
+                    
+                    const fecha = esHoy ? "Hoy" : dateObj.toLocaleDateString('es-ES', { day: '2-digit', month: 'short', year: 'numeric' });
                     const hora = dateObj.toLocaleTimeString('es-ES', { hour: '2-digit', minute: '2-digit' });
 
-                    // Asignación inteligente de iconos y colores según la palabra clave
+                    // LÓGICA INTELIGENTE DE COLORES E ICONOS
                     let icon = "activity";
-                    let colorClass = "bg-slate-100 text-slate-500 border-slate-200";
-                    let dotClass = "bg-slate-300 ring-slate-100";
+                    let colorClass = "bg-slate-100 text-slate-600 border-slate-200";
+                    let dotClass = "bg-slate-400 ring-slate-100";
+                    let iconColor = "text-slate-500";
                     
                     const actionLower = log.action.toLowerCase();
+                    const detailsLower = (log.details || "").toLowerCase();
+                    const fullText = actionLower + " " + detailsLower;
                     
-                    if (actionLower.includes('estado')) { icon = "arrow-right-left"; colorClass = "bg-blue-50 text-blue-700 border-blue-200"; dotClass = "bg-blue-500 ring-blue-100"; }
-                    else if (actionLower.includes('llamada') || actionLower.includes('teléfono')) { icon = "phone-call"; colorClass = "bg-emerald-50 text-emerald-700 border-emerald-200"; dotClass = "bg-emerald-500 ring-emerald-100"; }
-                    else if (actionLower.includes('whatsapp') || actionLower.includes('sms')) { icon = "message-circle"; colorClass = "bg-emerald-50 text-emerald-700 border-emerald-200"; dotClass = "bg-emerald-500 ring-emerald-100"; }
-                    else if (actionLower.includes('camino') || actionLower.includes('ruta')) { icon = "car"; colorClass = "bg-purple-50 text-purple-700 border-purple-200"; dotClass = "bg-purple-500 ring-purple-100"; }
-                    else if (actionLower.includes('nota') || actionLower.includes('apunte')) { icon = "sticky-note"; colorClass = "bg-amber-50 text-amber-700 border-amber-200"; dotClass = "bg-amber-500 ring-amber-100"; }
-                    else if (actionLower.includes('asign')) { icon = "user-check"; colorClass = "bg-indigo-50 text-indigo-700 border-indigo-200"; dotClass = "bg-indigo-500 ring-indigo-100"; }
+                    if (fullText.includes('estado') || fullText.includes('actualización')) { 
+                        icon = "arrow-right-left"; colorClass = "bg-blue-50 text-blue-700 border-blue-200"; dotClass = "bg-blue-500 ring-blue-100"; iconColor = "text-blue-500";
+                    }
+                    else if (fullText.includes('llamada') || fullText.includes('contacto') || fullText.includes('teléfono')) { 
+                        icon = "phone-call"; colorClass = "bg-teal-50 text-teal-700 border-teal-200"; dotClass = "bg-teal-500 ring-teal-100"; iconColor = "text-teal-500";
+                    }
+                    else if (fullText.includes('whatsapp') || fullText.includes('sms')) { 
+                        icon = "message-circle"; colorClass = "bg-emerald-50 text-emerald-700 border-emerald-200"; dotClass = "bg-emerald-500 ring-emerald-100"; iconColor = "text-emerald-500";
+                    }
+                    else if (fullText.includes('camino') || fullText.includes('ruta')) { 
+                        icon = "car"; colorClass = "bg-purple-50 text-purple-700 border-purple-200"; dotClass = "bg-purple-500 ring-purple-100"; iconColor = "text-purple-500";
+                    }
+                    else if (fullText.includes('nota') || fullText.includes('apunte') || fullText.includes('manual')) { 
+                        icon = "sticky-note"; colorClass = "bg-amber-50 text-amber-800 border-amber-200"; dotClass = "bg-amber-400 ring-amber-100"; iconColor = "text-amber-500";
+                    }
+                    else if (fullText.includes('asign') || fullText.includes('bolsa')) { 
+                        icon = "user-check"; colorClass = "bg-indigo-50 text-indigo-700 border-indigo-200"; dotClass = "bg-indigo-500 ring-indigo-100"; iconColor = "text-indigo-500";
+                    }
+                    else if (fullText.includes('archivado') || fullText.includes('cierre')) { 
+                        icon = "archive"; colorClass = "bg-slate-200 text-slate-700 border-slate-300"; dotClass = "bg-slate-600 ring-slate-200"; iconColor = "text-slate-600";
+                    }
+                    else if (fullText.includes('creado') || fullText.includes('presupuesto')) { 
+                        icon = "sparkles"; colorClass = "bg-yellow-50 text-yellow-700 border-yellow-200"; dotClass = "bg-yellow-500 ring-yellow-100"; iconColor = "text-yellow-500";
+                    }
 
-                    // El punto animado si es el más reciente
-                    const pingAnimation = index === 0 ? `<div class="absolute inset-0 rounded-full ${dotClass.split(' ')[0]} animate-ping opacity-70"></div>` : '';
+                    // El punto más reciente parpadea suavemente
+                    const pingAnimation = index === 0 ? `<div class="absolute inset-0 rounded-full ${dotClass.split(' ')[0]} animate-ping opacity-50"></div>` : '';
 
                     container.innerHTML += `
-                        <div class="relative pl-8 sm:pl-10 fade-in" style="animation-delay: ${index * 0.05}s">
-                            <div class="absolute -left-[9px] top-1.5 w-4 h-4 rounded-full border-2 border-white ring-4 ${dotClass} z-10 flex items-center justify-center">
+                        <div class="relative pl-14 sm:pl-16 pt-2 pb-4 fade-in z-10" style="animation-delay: ${index * 0.05}s">
+                            
+                            <div class="absolute left-[15px] top-6 w-4 h-4 rounded-full border-2 border-white ring-4 ${dotClass} z-20 flex items-center justify-center">
                                 ${pingAnimation}
                             </div>
                             
-                            <div class="bg-white border border-slate-200 p-4 rounded-2xl shadow-sm hover:shadow-md transition-shadow">
-                                <div class="flex justify-between items-start mb-2">
-                                    <span class="inline-flex items-center gap-1.5 px-2.5 py-1 rounded-lg text-[10px] font-black uppercase tracking-widest border ${colorClass}">
-                                        <i data-lucide="${icon}" class="w-3 h-3"></i> ${log.action}
+                            <div class="bg-white border border-slate-200 p-5 rounded-3xl shadow-sm hover:shadow-md transition-all group">
+                                <div class="flex flex-wrap justify-between items-start gap-4 mb-3">
+                                    <span class="inline-flex items-center gap-1.5 px-3 py-1.5 rounded-xl text-[10px] font-black uppercase tracking-widest border ${colorClass}">
+                                        <i data-lucide="${icon}" class="w-3.5 h-3.5 ${iconColor}"></i> ${log.action}
                                     </span>
+                                    
                                     <div class="text-right">
-                                        <p class="text-xs font-black text-slate-800">${hora}</p>
-                                        <p class="text-[9px] font-bold text-slate-400 uppercase tracking-widest">${fecha}</p>
+                                        <p class="text-sm font-black text-slate-800">${hora}</p>
+                                        <p class="text-[10px] font-bold text-slate-400 uppercase tracking-widest">${fecha}</p>
                                     </div>
                                 </div>
-                                <p class="text-sm text-slate-700 font-medium leading-relaxed">${log.details}</p>
-                                <div class="mt-3 pt-3 border-t border-slate-100 flex items-center gap-2">
-                                    <div class="w-5 h-5 rounded-full bg-slate-200 text-slate-500 flex items-center justify-center text-[9px] font-black shrink-0">
+                                
+                                <p class="text-sm text-slate-700 font-medium leading-relaxed bg-slate-50 p-3 rounded-xl border border-slate-100">${log.details}</p>
+                                
+                                <div class="mt-3 flex items-center gap-2">
+                                    <div class="w-6 h-6 rounded-full bg-slate-800 text-white flex items-center justify-center text-[10px] font-black shrink-0 shadow-sm">
                                         ${log.user_name.charAt(0).toUpperCase()}
                                     </div>
-                                    <p class="text-[10px] font-bold text-slate-400 uppercase tracking-widest">Realizado por: <span class="text-slate-600">${log.user_name}</span></p>
+                                    <p class="text-[10px] font-bold text-slate-400 uppercase tracking-widest">
+                                        Registrado por: <span class="text-slate-700">${log.user_name}</span>
+                                    </p>
                                 </div>
                             </div>
                         </div>
                     `;
                 });
+                
                 lucide.createIcons();
 
             } catch (error) {
                 console.error(error);
-                document.getElementById('timelineContainer').innerHTML = "<p class='text-red-500 pl-8 pt-2 font-bold'>No se pudo conectar con el servidor.</p>";
+                document.getElementById('timelineContainer').innerHTML = "<p class='text-red-500 pl-14 pt-4 font-bold relative z-10'>No se pudo conectar con el servidor.</p>";
             }
         }
 
-        async function addManualNote() {
+        async function addManualNote(btn) {
             const input = document.getElementById('manualNoteInput');
             const text = input.value.trim();
-            if (!text) return;
+            
+            if (!text) {
+                showToast("⚠️ Escribe un apunte antes de guardar.");
+                input.focus();
+                return;
+            }
 
-            const btn = event.currentTarget;
             const originalHtml = btn.innerHTML;
-            btn.innerHTML = '<i data-lucide="loader-2" class="w-4 h-4 animate-spin"></i>';
+            btn.innerHTML = '<i data-lucide="loader-2" class="w-4 h-4 animate-spin"></i> Guardando...';
             btn.disabled = true;
 
             try {
-                await fetch(`${API_URL}/services/${serviceId}/log`, {
+                const res = await fetch(`${API_URL}/services/${serviceId}/log`, {
                     method: 'POST',
                     headers: { "Content-Type": "application/json", "Authorization": `Bearer ${localStorage.getItem("token")}` },
                     body: JSON.stringify({
@@ -182,16 +253,28 @@
                     })
                 });
                 
-                input.value = "";
-                loadLogs(); // Recargamos para ver la nota en la línea de tiempo
+                if(res.ok) {
+                    input.value = "";
+                    showToast("✅ Apunte guardado correctamente");
+                    loadLogs(); 
+                } else {
+                    throw new Error("Error del servidor");
+                }
             } catch (e) {
-                alert("Error al guardar la nota.");
+                showToast("❌ Error al guardar la nota.");
             } finally {
                 btn.innerHTML = originalHtml;
                 btn.disabled = false;
                 lucide.createIcons();
             }
         }
+
+        function showToast(msg) {
+            const t = document.getElementById('toast');
+            t.innerHTML = msg;
+            t.classList.remove('hidden');
+            setTimeout(() => t.classList.add('hidden'), 3000);
+        }
     </script>
 </body>
 </html>
\ No newline at end of file
