diff --git a/public/css/style.css b/public/css/style.css
index 92b6719..c952a9f 100644
--- a/public/css/style.css
+++ b/public/css/style.css
@@ -354,6 +354,25 @@ body {
   letter-spacing: -0.02em;
 }
 
+.btn-brand-action {
+  background: transparent;
+  border: 1px solid transparent;
+  color: var(--text-secondary);
+  cursor: pointer;
+  padding: 4px 6px;
+  border-radius: var(--radius-sm);
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  transition: all var(--transition-fast);
+}
+
+.btn-brand-action:hover {
+  color: var(--error);
+  background: var(--error-bg);
+  border-color: rgba(220, 38, 38, 0.2);
+}
+
 .nav-menu {
   list-style: none;
   padding: var(--space-md);
diff --git a/public/index.html b/public/index.html
index a0ef817..796b208 100644
--- a/public/index.html
+++ b/public/index.html
@@ -18,9 +18,19 @@
 <body>
   <!-- Sidebar Navigation -->
   <nav class="sidebar" id="sidebar">
-    <div class="sidebar-brand" style="border-bottom:none; padding-bottom:4px;">
-      <div class="brand-icon">⚡</div>
-      <span class="brand-text">OTRS Turbo</span>
+    <div class="sidebar-brand" style="border-bottom:none; padding-bottom:4px; display:flex; align-items:center; justify-content:space-between;">
+      <div style="display:flex; align-items:center; gap:var(--space-md);">
+        <div class="brand-icon">⚡</div>
+        <span class="brand-text">OTRS Turbo</span>
+      </div>
+      <button id="btn-close-end-of-day" class="btn-brand-action" title="Chiudi i ticket inseriti nel gruppo CHIUDI A FINE GIORNATA">
+        <svg class="nav-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" style="width:18px; height:18px;">
+          <path d="M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2" />
+          <rect x="9" y="3" width="6" height="4" rx="1" />
+          <path d="M9 12h6M9 16h4" />
+          <line x1="3" y1="3" x2="21" y2="21" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" />
+        </svg>
+      </button>
     </div>
     <div class="sidebar-timer" id="daily-timer"
       style="padding:var(--space-md) var(--space-lg) var(--space-lg) var(--space-lg); border-bottom:1px solid var(--border-subtle); font-size:0.75rem; color:var(--text-secondary); font-family:monospace; line-height:1.2;">
diff --git a/public/js/app.js b/public/js/app.js
index f4df8cd..060a1a7 100644
--- a/public/js/app.js
+++ b/public/js/app.js
@@ -204,6 +204,34 @@ const App = {
       refreshBtn.addEventListener('click', () => this.refreshLookups());
     }
 
+    // Bind button close end of day tickets
+    const btnCloseEod = document.getElementById('btn-close-end-of-day');
+    if (btnCloseEod) {
+      btnCloseEod.addEventListener('click', async (e) => {
+        e.preventDefault();
+        e.stopPropagation();
+        e.stopImmediatePropagation();
+        const confirmed = await this.confirm(
+          'Chiusura Ticket Fine Giornata',
+          'Sei sicuro di voler chiudere tutti i ticket nel gruppo "CHIUDI A FINE GIORNATA"?\nI ticket rimarranno nel gruppo.'
+        );
+        if (!confirmed) return;
+
+        try {
+          const res = await this.api('/api/groups/close-end-of-day', { method: 'POST' });
+          if (res.count > 0) {
+            Toast.success(res.message);
+          } else {
+            Toast.info(res.message);
+          }
+          this.updateSidebarBadges();
+          this.route();
+        } catch (err) {
+          Toast.error('Errore durante la chiusura dei ticket: ' + err.message);
+        }
+      });
+    }
+
     // Initial route
     window.addEventListener('resize', () => this.updateHeaderHeight());
     setTimeout(() => this.updateHeaderHeight(), 100);
@@ -622,6 +650,9 @@ const App = {
       }
 
       const triggerAction = async (e) => {
+        if (e && e.target && e.target.closest('#btn-close-end-of-day')) {
+          return;
+        }
         e.preventDefault();
         e.stopPropagation();
         const confirmed = await this.confirm(
diff --git a/routes/groups.js b/routes/groups.js
index 41b72a2..b4006b5 100644
--- a/routes/groups.js
+++ b/routes/groups.js
@@ -1,7 +1,7 @@
 const express = require('express');
 const router = express.Router();
 const pool = require('../db');
-const { db } = require('../activityDb');
+const { db, logAttivita } = require('../activityDb');
 
 // Helper to fetch details of a list of tickets from OTRS DB
 async function fetchTicketsDetails(ticketIds) {
@@ -246,5 +246,83 @@ router.delete('/:id/tickets/:ticket_id', (req, res) => {
     res.status(500).json({ error: 'Errore nella rimozione del ticket', message: err.message });
   }
 });
+// POST /api/groups/close-end-of-day - Close all tickets in 'CHIUDI A FINE GIORNATA' group
+router.post('/close-end-of-day', async (req, res) => {
+  try {
+    const operatorId = parseInt(req.headers['x-agent-id'] || '1', 10);
+    
+    // Find default group 'CHIUDI A FINE GIORNATA'
+    const closeGroup = db.prepare('SELECT id FROM ticket_groups WHERE UPPER(nome) = ?').get('CHIUDI A FINE GIORNATA');
+    if (!closeGroup) {
+      return res.status(404).json({ error: 'Gruppo "CHIUDI A FINE GIORNATA" non trovato' });
+    }
+
+    const groupMembers = db.prepare('SELECT ticket_id FROM ticket_group_members WHERE group_id = ?').all(closeGroup.id);
+    if (groupMembers.length === 0) {
+      return res.json({ success: true, count: 0, message: 'Nessun ticket presente nel gruppo "CHIUDI A FINE GIORNATA"' });
+    }
+
+    const groupTicketIds = groupMembers.map(m => m.ticket_id);
+    const placeholders = groupTicketIds.map((_, i) => `$${i + 1}`).join(', ');
+
+    // Get open tickets in group (not already in a closed state)
+    const openTicketsQuery = `
+      SELECT t.id
+      FROM ticket t
+      JOIN ticket_state ts ON t.ticket_state_id = ts.id
+      JOIN ticket_state_type tst ON ts.type_id = tst.id
+      WHERE t.id IN (${placeholders})
+        AND LOWER(tst.name) NOT LIKE '%closed%'
+    `;
+    const openRes = await pool.query(openTicketsQuery, groupTicketIds);
+    const openTicketIds = openRes.rows.map(r => r.id);
+
+    if (openTicketIds.length === 0) {
+      return res.json({ success: true, count: 0, message: 'Tutti i ticket nel gruppo "CHIUDI A FINE GIORNATA" risultano già chiusi' });
+    }
+
+    // Resolve closed state ID (closed successful / closed fallback)
+    const closedStateRes = await pool.query(
+      `SELECT id FROM ticket_state WHERE name = 'closed successful' OR name = 'chiuso con successo' LIMIT 1`
+    );
+    let stateId;
+    if (closedStateRes.rows.length > 0) {
+      stateId = closedStateRes.rows[0].id;
+    } else {
+      const fallbackRes = await pool.query(
+        `SELECT ts.id FROM ticket_state ts JOIN ticket_state_type tst ON ts.type_id = tst.id WHERE tst.name = 'closed' LIMIT 1`
+      );
+      stateId = fallbackRes.rows[0]?.id || 2;
+    }
+
+    const updatePlaceholders = openTicketIds.map((_, i) => `$${i + 1}`).join(', ');
+    const updateQuery = `
+      UPDATE ticket 
+      SET ticket_state_id = $${openTicketIds.length + 1},
+          ticket_lock_id = 1,
+          change_time = NOW(),
+          change_by = $${openTicketIds.length + 2}
+      WHERE id IN (${updatePlaceholders})
+    `;
+    await pool.query(updateQuery, [...openTicketIds, stateId, operatorId]);
+
+    // Log activity
+    logAttivita({
+      agente_id: operatorId,
+      titolo_azione: 'Chiusura ticket gruppo CHIUDI A FINE GIORNATA',
+      azione: { closed_count: openTicketIds.length, ticket_ids: openTicketIds },
+      esito: 'successo',
+    });
+
+    res.json({
+      success: true,
+      count: openTicketIds.length,
+      message: `${openTicketIds.length} ticket del gruppo "CHIUDI A FINE GIORNATA" chius${openTicketIds.length === 1 ? 'o' : 'i'} con successo!`
+    });
+  } catch (err) {
+    console.error('Errore nella chiusura ticket fine giornata:', err);
+    res.status(500).json({ error: 'Errore nella chiusura ticket', message: err.message });
+  }
+});
 
 module.exports = router;
