diff --git a/app.py b/app.py
index 63af4a1..b6c08ee 100644
--- a/app.py
+++ b/app.py
@@ -839,6 +839,7 @@ def handle_join(data):
     username = data.get('username', 'Gość')
     join_room(room)
     emit('user_joined', {'username': username}, to=room)
+    emit('joined_confirmation', {'room': room})
 
 @socketio.on('add_item')
 def handle_add_item(data):
diff --git a/static/js/live.js b/static/js/live.js
index b5c0ee4..79d3245 100644
--- a/static/js/live.js
+++ b/static/js/live.js
@@ -327,3 +327,4 @@ function showToast(message, type = 'primary') {
   toastContainer.appendChild(toast);
   setTimeout(() => { toast.remove(); }, 1750);
 }
+
diff --git a/static/js/live_backup.js b/static/js/live_backup.js
new file mode 100644
index 0000000..84af0ef
--- /dev/null
+++ b/static/js/live_backup.js
@@ -0,0 +1,319 @@
+const socket = io();
+
+function setupList(listId, username) {
+  socket.emit('join_list', { room: listId, username: username });
+
+  const newItemInput = document.getElementById('newItem');
+
+  const parentDiv = newItemInput.closest('.input-group');
+  if (parentDiv) {
+    parentDiv.classList.add('position-relative');
+  }
+
+  const suggestionsBox = document.createElement('div');
+  suggestionsBox.className = 'list-group position-absolute w-100';
+  suggestionsBox.style.top = '100%';
+  suggestionsBox.style.left = '0';
+  suggestionsBox.style.zIndex = '9999';
+  newItemInput.parentNode.appendChild(suggestionsBox);
+
+  newItemInput.addEventListener('input', async function () {
+    const query = this.value;
+    if (query.length < 2) {
+      suggestionsBox.innerHTML = '';
+      return;
+    }
+
+    const res = await fetch(`/suggest_products?q=${encodeURIComponent(query)}`);
+    const data = await res.json();
+
+    suggestionsBox.innerHTML = '';
+    data.suggestions.forEach(s => {
+      const item = document.createElement('button');
+      item.type = 'button';
+      item.className = 'list-group-item list-group-item-action';
+      item.textContent = s;
+      item.onclick = () => {
+        newItemInput.value = s;
+        suggestionsBox.innerHTML = '';
+      };
+      suggestionsBox.appendChild(item);
+    });
+  });
+
+  newItemInput.addEventListener('blur', () => {
+    setTimeout(() => { suggestionsBox.innerHTML = ''; }, 200);
+  });
+
+  newItemInput.focus();
+  newItemInput.addEventListener('keypress', function (e) {
+    if (e.key === 'Enter') {
+      e.preventDefault();
+      addItem(listId);
+    }
+  });
+
+  const itemsContainer = document.getElementById('items');
+
+  itemsContainer.addEventListener('change', function (e) {
+    if (e.target && e.target.type === 'checkbox') {
+      const li = e.target.closest('li');
+      if (li) {
+        const id = parseInt(li.id.replace('item-', ''), 10);
+
+        if (e.target.checked) {
+          socket.emit('check_item', { item_id: id });
+        } else {
+          socket.emit('uncheck_item', { item_id: id });
+        }
+
+        e.target.disabled = true;
+        li.classList.add('opacity-50');
+
+        let existingSpinner = li.querySelector('.spinner-border');
+        if (!existingSpinner) {
+          const spinner = document.createElement('span');
+          spinner.className = 'spinner-border spinner-border-sm ms-2';
+          spinner.setAttribute('role', 'status');
+          spinner.setAttribute('aria-hidden', 'true');
+          e.target.parentElement.appendChild(spinner);
+        }
+      }
+    }
+  });
+
+  socket.on('item_checked', data => {
+    updateItemState(data.item_id, true);
+  });
+
+  socket.on('item_unchecked', data => {
+    updateItemState(data.item_id, false);
+  });
+
+  socket.on('expense_added', data => {
+    const badgeEl = document.getElementById('total-expense1');
+    if (badgeEl) {
+      badgeEl.innerHTML = `💸 ${data.total.toFixed(2)} PLN`;
+      badgeEl.classList.remove('bg-secondary');
+      badgeEl.classList.add('bg-success');
+      badgeEl.style.display = '';
+    }
+
+    const summaryEl = document.getElementById('total-expense2');
+    if (summaryEl) {
+      summaryEl.innerHTML = `<b>💸 Łącznie wydano:</b> ${data.total.toFixed(2)} PLN`;
+    }
+
+    showToast(`Dodano wydatek: ${data.amount.toFixed(2)} PLN`);
+  });
+
+  socket.on('item_added', data => {
+    showToast(`${data.added_by} dodał: ${data.name}`);
+    const li = document.createElement('li');
+    li.className = 'list-group-item d-flex justify-content-between align-items-center flex-wrap item-not-checked';
+    li.id = `item-${data.id}`;
+    
+    let quantityBadge = '';
+    if (data.quantity && data.quantity > 1) {
+      quantityBadge = `<span class="badge bg-secondary">x${data.quantity}</span>`;
+    }
+
+    li.innerHTML = `
+      <div class="d-flex align-items-center flex-wrap gap-2">
+        <input type="checkbox">
+        <span id="name-${data.id}" class="text-white">${data.name} ${quantityBadge}</span>
+      </div>
+      <div class="mt-2 mt-md-0">
+        <button class="btn btn-sm btn-outline-warning me-1" onclick="editItem(${data.id}, '${data.name}', ${data.quantity || 1})">✏️ Edytuj</button>
+        <button class="btn btn-sm btn-outline-danger" onclick="deleteItem(${data.id})">🗑️ Usuń</button>
+      </div>
+    `;
+
+    document.getElementById('items').appendChild(li);
+    updateProgressBar();
+  });
+
+  socket.on('item_deleted', data => {
+    const li = document.getElementById(`item-${data.item_id}`);
+    if (li) {
+      li.remove();
+    }
+    showToast('Usunięto produkt');
+    updateProgressBar();
+  });
+
+  socket.on('progress_updated', function(data) {
+    const progressBar = document.getElementById('progress-bar');
+    if (progressBar) {
+      progressBar.style.width = data.percent + '%';
+      progressBar.setAttribute('aria-valuenow', data.percent);
+      progressBar.textContent = `${Math.round(data.percent)}%`;
+    }
+
+    const progressTitle = document.getElementById('progress-title');
+    if (progressTitle) {
+      progressTitle.textContent = `📊 Postęp listy — ${data.purchased_count}/${data.total_count} kupionych (${Math.round(data.percent)}%)`;
+    }
+  });
+
+  socket.on('note_updated', data => {
+    const itemEl = document.getElementById(`item-${data.item_id}`);
+    if (itemEl) {
+      let noteEl = itemEl.querySelector('small');
+      if (noteEl) {
+        noteEl.innerHTML = `[ Notatka: <b>${data.note}</b> ]`;
+      } else {
+        const newNote = document.createElement('small');
+        newNote.className = 'text-danger ms-4';
+        newNote.innerHTML = `[ Notatka: <b>${data.note}</b> ]`;
+
+        const flexColumn = itemEl.querySelector('.d-flex.flex-column');
+        if (flexColumn) {
+          flexColumn.appendChild(newNote);
+        } else {
+          itemEl.appendChild(newNote);
+        }
+      }
+    }
+    showToast('Notatka zaktualizowana!');
+  });
+
+  socket.on('item_edited', data => {
+    const nameSpan = document.getElementById(`name-${data.item_id}`);
+    if (nameSpan) {
+      let quantityBadge = '';
+      if (data.new_quantity && data.new_quantity > 1) {
+        quantityBadge = ` <span class="badge bg-secondary">x${data.new_quantity}</span>`;
+      }
+      nameSpan.innerHTML = `${data.new_name}${quantityBadge}`;
+    }
+    showToast(`Zaktualizowano produkt: ${data.new_name} (x${data.new_quantity})`);
+  });
+
+  updateProgressBar();
+
+  // --- NOWE: zapisz dane do reconnect ---
+  window.LIST_ID = listId;
+  window.usernameForReconnect = username;
+
+  socket.on('joined_confirmation', function(data) {
+    console.log('Dołączono do pokoju:', data.room);
+    showToast('Pokój ponownie dołączony ✅', 'info');
+  });
+}
+
+function updateItemState(itemId, isChecked) {
+  const checkbox = document.querySelector(`#item-${itemId} input[type='checkbox']`);
+  if (checkbox) {
+    checkbox.checked = isChecked;
+    checkbox.disabled = false;
+    const li = checkbox.closest('li');
+    li.classList.remove('opacity-50', 'bg-light', 'text-dark', 'bg-success', 'text-white');
+
+    if (isChecked) {
+      li.classList.add('bg-success', 'text-white');
+    } else {
+      li.classList.add('item-not-checked');
+    }
+
+    const sp = li.querySelector('.spinner-border');
+    if (sp) sp.remove();
+  }
+  updateProgressBar();
+}
+
+function updateProgressBar() {
+  const items = document.querySelectorAll('#items li');
+  const total = items.length;
+  const purchased = Array.from(items).filter(li => li.classList.contains('bg-success')).length;
+  const percent = total > 0 ? Math.round((purchased / total) * 100) : 0;
+
+  const progressBar = document.getElementById('progress-bar');
+  if (progressBar) {
+    progressBar.style.width = `${percent}%`;
+    progressBar.setAttribute('aria-valuenow', percent);
+    progressBar.textContent = `${percent}%`;
+  }
+}
+
+function addItem(listId) {
+  const name = document.getElementById('newItem').value;
+  const quantityInput = document.getElementById('newQuantity');
+  let quantity = 1;
+
+  if (quantityInput) {
+    quantity = parseInt(quantityInput.value);
+    if (isNaN(quantity) || quantity < 1) {
+      quantity = 1;
+    }
+  }
+
+  if (name.trim() === '') return;
+
+  socket.emit('add_item', { list_id: listId, name: name, quantity: quantity });
+
+  document.getElementById('newItem').value = '';
+  if (quantityInput) quantityInput.value = 1;
+  document.getElementById('newItem').focus();
+}
+
+function deleteItem(id) {
+  if (confirm('Na pewno usunąć produkt?')) {
+    socket.emit('delete_item', { item_id: id });
+  }
+}
+
+function editItem(id, oldName, oldQuantity) {
+  const newName = prompt('Podaj nową nazwę (lub zostaw starą):', oldName);
+  if (newName === null) return;
+
+  const newQuantityStr = prompt('Podaj nową ilość:', oldQuantity);
+  if (newQuantityStr === null) return;
+
+  const finalName = newName.trim() !== '' ? newName.trim() : oldName;
+
+  let newQuantity = parseInt(newQuantityStr);
+  if (isNaN(newQuantity) || newQuantity < 1) {
+    newQuantity = oldQuantity;
+  }
+
+  socket.emit('edit_item', { item_id: id, new_name: finalName, new_quantity: newQuantity });
+}
+
+function submitExpense(listId) {
+  const amountInput = document.getElementById('expenseAmount');
+  const amount = parseFloat(amountInput.value);
+  if (isNaN(amount) || amount <= 0) {
+    showToast('Podaj poprawną kwotę!');
+    return;
+  }
+  socket.emit('add_expense', {
+    list_id: listId,
+    amount: amount
+  });
+  amountInput.value = '';
+}
+
+function copyLink(link) {
+  if (navigator.share) {
+    navigator.share({
+      title: 'Lista zakupów',
+      text: 'Udostępniam Ci moją listę zakupów:',
+      url: link
+    }).catch((err) => console.log('Udostępnianie anulowane', err));
+  } else {
+    navigator.clipboard.writeText(link).then(() => {
+      showToast('Link skopiowany do schowka!');
+    });
+  }
+}
+
+function showToast(message, type = 'primary') {
+  const toastContainer = document.getElementById('toast-container');
+  const toast = document.createElement('div');
+  toast.className = `toast align-items-center text-bg-${type} border-0 show`;
+  toast.setAttribute('role', 'alert');
+  toast.innerHTML = `<div class="d-flex"><div class="toast-body">${message}</div></div>`;
+  toastContainer.appendChild(toast);
+  setTimeout(() => { toast.remove(); }, 1750);
+}
diff --git a/static/js/socket_reconnect.js b/static/js/socket_reconnect.js
index c4ea4b4..3ec1098 100644
--- a/static/js/socket_reconnect.js
+++ b/static/js/socket_reconnect.js
@@ -27,6 +27,7 @@ socket.on('connect', function() {
         showToast('Połączono z serwerem! 🔄', 'info');
         // Automatyczne ponowne dołączenie do pokoju
         if (window.LIST_ID && window.usernameForReconnect) {
+            console.log('Ponownie wysyłam join_list:', window.LIST_ID, window.usernameForReconnect);
             socket.emit('join_list', { room: window.LIST_ID, username: window.usernameForReconnect });
         }
     }