diff --git a/nodejs-project/nodejs-project/src/client/assets/styles/mobile.css b/nodejs-project/nodejs-project/src/client/assets/styles/mobile.css
index 2c307efc..993b9511 100644
--- a/nodejs-project/nodejs-project/src/client/assets/styles/mobile.css
+++ b/nodejs-project/nodejs-project/src/client/assets/styles/mobile.css
@@ -60,63 +60,68 @@ pre, code {
   display: flex !important;
   flex-direction: row !important;
   flex-wrap: wrap !important;
-  width: 100% !important;
-  max-width: 100% !important;
-  padding: 4px 2px !important;
-  gap: 2px !important;
   align-items: center !important;
-}
-
-.header-content {
-  display: flex !important;
-  flex-wrap: wrap !important;
   width: 100% !important;
-  max-width: 100% !important;
-  padding: 2px !important;
-  gap: 4px !important;
+  padding: 2px 4px !important;
+  gap: 0 !important;
 }
 
-body div.top-bar-left {
-  display: contents !important;
-}
-
-body div.top-bar-left > a.logo-icon {
-  flex: 0 0 100% !important;
-}
-
-body div.top-bar-left > nav,
-body div.top-bar-left > nav > ul,
-body div.top-bar-right,
-body div.top-bar-right nav,
-body div.top-bar-right nav ul {
-  display: contents !important;
-}
-
-body div.top-bar-left nav ul li a,
-body div.top-bar-right nav ul li a {
-  padding: 5px 5px !important;
-  font-size: 0.82rem !important;
-  min-height: auto !important;
-  border: none !important;
-}
-
-.top-bar-left, .top-bar-mid, .top-bar-right {
+.top-bar-left {
+  display: flex !important;
+  flex-direction: row !important;
+  align-items: center !important;
+  flex: 1 !important;
+  flex-wrap: nowrap !important;
+  gap: 2px !important;
+  width: auto !important;
+  max-width: none !important;
+  padding: 0 !important;
+}
+
+.top-bar-right {
+  display: flex !important;
+  flex-direction: row !important;
+  align-items: center !important;
+  flex-shrink: 0 !important;
+  flex-wrap: nowrap !important;
+  gap: 2px !important;
+  width: auto !important;
+  max-width: none !important;
+  padding: 0 !important;
+}
+
+.top-bar-left nav,
+.top-bar-right nav {
   display: flex !important;
-  flex-direction: column !important;
-  width: 100% !important;
-  max-width: 100% !important;
-  align-items: stretch !important;
-  gap: 4px !important;
 }
 
 .top-bar-left nav ul,
-.top-bar-mid nav ul,
 .top-bar-right nav ul {
   display: flex !important;
-  flex-wrap: wrap !important;
-  gap: 4px !important;
+  flex-direction: row !important;
+  flex-wrap: nowrap !important;
+  gap: 2px !important;
   padding: 0 !important;
   margin: 0 !important;
+  list-style: none !important;
+}
+
+a.logo-icon img.logo-icon {
+  width: 28px !important;
+  height: 28px !important;
+  display: block !important;
+}
+
+.header nav ul li a,
+.top-bar-left nav ul li a,
+.top-bar-right nav ul li a {
+  padding: 4px 6px !important;
+  font-size: 0.75rem !important;
+  min-height: auto !important;
+  border: none !important;
+  white-space: nowrap !important;
+  display: inline-block !important;
+  line-height: 1.2 !important;
 }
 
 .oasis-nav-header { font-size: 0.85rem !important; }
diff --git a/nodejs-project/nodejs-project/src/client/assets/styles/style.css b/nodejs-project/nodejs-project/src/client/assets/styles/style.css
index 8db0d46a..cda9c2b5 100644
--- a/nodejs-project/nodejs-project/src/client/assets/styles/style.css
+++ b/nodejs-project/nodejs-project/src/client/assets/styles/style.css
@@ -4315,3 +4315,43 @@ button, input[type="submit"], input[type="button"], .filter-btn {
   grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
   gap: 20px;
 }
+
+/* ---- QR Compartir ID (details/summary en perfil) ---- */
+.qr-share-details {
+  margin: 8px 0;
+  width: 100%;
+}
+
+.qr-share-btn {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  cursor: pointer;
+  padding: 8px 16px;
+  border-radius: 8px;
+  font-size: 0.9rem;
+  font-weight: bold;
+  list-style: none;
+  user-select: none;
+}
+
+.qr-share-btn::-webkit-details-marker { display: none; }
+
+.qr-share-panel {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 8px;
+  padding: 16px 8px;
+  margin-top: 8px;
+  border-radius: 12px;
+}
+
+.qr-share-id {
+  font-family: monospace;
+  font-size: 0.7rem;
+  word-break: break-all;
+  text-align: center;
+  max-width: 280px;
+  opacity: 0.7;
+}
diff --git a/nodejs-project/nodejs-project/src/client/assets/themes/OasisMobile.css b/nodejs-project/nodejs-project/src/client/assets/themes/OasisMobile.css
index ba0799e8..4dc6ad88 100644
--- a/nodejs-project/nodejs-project/src/client/assets/themes/OasisMobile.css
+++ b/nodejs-project/nodejs-project/src/client/assets/themes/OasisMobile.css
@@ -329,3 +329,19 @@ a.user-link:focus {
 .qr-code svg path {
   fill: #FFD700;
 }
+
+.qr-share-btn {
+  background-color: #2a2a00;
+  color: #FFD700;
+  border: 1px solid #555;
+}
+
+.qr-share-btn:hover {
+  background-color: #3a3a00;
+  border-color: #FFD700;
+}
+
+.qr-share-panel {
+  background-color: #1A1A1A;
+  border: 1px solid #333;
+}
diff --git a/nodejs-project/nodejs-project/src/views/main_views.js b/nodejs-project/nodejs-project/src/views/main_views.js
index 17af0c82..f01e39d5 100644
--- a/nodejs-project/nodejs-project/src/views/main_views.js
+++ b/nodejs-project/nodejs-project/src/views/main_views.js
@@ -2,6 +2,7 @@
 
 const path = require("path");
 const fs = require("fs");
+const QRCode = require('../server/node_modules/qrcode');
 
 const envPaths = require("../server/node_modules/env-paths");
 const debug = require("../server/node_modules/debug")("oasis");
@@ -1514,7 +1515,7 @@ exports.editProfileView = ({ name, description }) =>
     )
   );
 
-exports.authorView = ({
+exports.authorView = async ({
   avatarUrl,
   description,
   feedId,
@@ -1562,6 +1563,8 @@ exports.authorView = ({
 
   const { lastActivityBadge } = require('./inhabitants_view');
 
+  const qrSvg = feedId ? await QRCode.toString(feedId, { type: 'svg' }) : '';
+
   const prefix = section(
     { class: "message" },
     div(
@@ -1572,6 +1575,13 @@ exports.authorView = ({
       ),
       pre({ class: "md-mention", innerHTML: sanitizeHtml(markdownMention) }),
       p(a({ class: "user-link", href: `/author/${encodeURIComponent(feedId)}` }, feedId)),
+      qrSvg ? details({ class: 'qr-share-details' },
+        summary({ class: 'qr-share-btn' }, '⬡ Compartir ID'),
+        div({ class: 'qr-share-panel' },
+          div({ class: 'qr-code qr-code-profile', innerHTML: qrSvg }),
+          p({ class: 'qr-share-id' }, feedId)
+        )
+      ) : null,
       div({ class: "profile-metrics" },
         p(`${i18n.bankingUserEngagementScore}: `, strong(karmaScore !== undefined ? karmaScore : 0)),
         ...lastActivityBadge({ lastActivityBucket: bucket }, true),