diff --git a/shared/components/sidebar.php b/shared/components/sidebar.php
index ff99a94..b061cec 100644
--- a/shared/components/sidebar.php
+++ b/shared/components/sidebar.php
@@ -244,18 +244,37 @@ if (class_exists('ModuleRegistry', false)) {
             <?= htmlspecialchars($_user_name, ENT_QUOTES, 'UTF-8') ?>
         </div>
         <div class="sidebar-user-role"><?= htmlspecialchars($_role_label, ENT_QUOTES, 'UTF-8') ?></div>
-        <div id="sb-local-ip" style="font-size:.68rem;color:#94a3b8;margin-top:3px;letter-spacing:.02em">
+        <div id="sb-local-ip" style="font-size:.68rem;color:#94a3b8;margin-top:3px;letter-spacing:.02em;cursor:pointer" title="Clic para ver cómo encontrar tu IP local" onclick="sbMostrarAyudaIP()">
             <i class="fas fa-network-wired me-1"></i><span id="sb-ip-val">detectando…</span>
         </div>
     </div>
 
 </nav>
+<!-- Modal ayuda IP -->
+<div id="sb-modal-ip" style="display:none;position:fixed;inset:0;z-index:9999;background:rgba(0,0,0,.5);align-items:center;justify-content:center">
+    <div style="background:#fff;border-radius:12px;padding:24px;max-width:340px;width:90%;box-shadow:0 8px 32px rgba(0,0,0,.2)">
+        <h6 style="margin:0 0 12px;font-size:.95rem"><i class="fas fa-network-wired me-2 text-primary"></i>Tu IP en la red local</h6>
+        <p style="font-size:.82rem;color:#555;margin:0 0 10px">El navegador no puede leerla directamente. Para encontrarla:</p>
+        <div style="font-size:.8rem;background:#f1f5f9;border-radius:8px;padding:10px 12px;line-height:1.8">
+            <strong>Windows:</strong> <code>Win + R</code> → <code>cmd</code> → <code>ipconfig</code><br>
+            <strong>Mac:</strong> Preferencias → Red → IP<br>
+            <strong>Android:</strong> Ajustes → WiFi → detalles de la red
+        </div>
+        <button onclick="document.getElementById('sb-modal-ip').style.display='none'" style="margin-top:14px;width:100%;padding:7px;border:none;border-radius:7px;background:#1565c0;color:#fff;font-size:.85rem;cursor:pointer">Cerrar</button>
+    </div>
+</div>
 <script>
 (function() {
+    function sbMostrarAyudaIP() {
+        document.getElementById('sb-modal-ip').style.display = 'flex';
+    }
+    window.sbMostrarAyudaIP = sbMostrarAyudaIP;
+
     function detectLocalIP() {
+        var el = document.getElementById('sb-ip-val');
         var RTC = window.RTCPeerConnection || window.webkitRTCPeerConnection || window.mozRTCPeerConnection;
-        if (!RTC) { document.getElementById('sb-ip-val').textContent = '(no disponible)'; return; }
-        var pc = new RTC({ iceServers: [] }), found = false;
+        if (!RTC) { el.textContent = '(ver ayuda)'; return; }
+        var pc = new RTC({ iceServers: [{ urls: 'stun:stun.l.google.com:19302' }] }), found = false;
         pc.createDataChannel('');
         pc.createOffer().then(function(o) { return pc.setLocalDescription(o); }).catch(function(){});
         pc.onicecandidate = function(e) {
@@ -265,14 +284,14 @@ if (class_exists('ModuleRegistry', false)) {
                 if (found) return;
                 if (/^(192\.168\.|10\.|172\.(1[6-9]|2\d|3[01])\.)/.test(ip)) {
                     found = true;
-                    document.getElementById('sb-ip-val').textContent = ip;
+                    el.textContent = ip;
                     pc.close();
                 }
             });
         };
         setTimeout(function() {
-            if (!found) document.getElementById('sb-ip-val').textContent = '(no detectada)';
-        }, 3000);
+            if (!found) el.textContent = '(ver ayuda)';
+        }, 4000);
     }
     if (document.readyState === 'loading') {
         document.addEventListener('DOMContentLoaded', detectLocalIP);