Add cart button to header with item count

Add a cart button in the header (right of language switcher) that displays the number of items in parentheses when cart is not empty. Button opens the cart drawer on click and count updates dynamically when items are added/removed.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

assets/css/partials/_site-header.scss

@@ -43,14 +43,20 @@
     }
   }
 
-  .header-left,
-  .header-right {
+  .header-left {
     width: 90px;
     display: flex;
     align-items: center;
     justify-content: flex-end;
   }
 
+  .header-right {
+    display: flex;
+    align-items: center;
+    justify-content: flex-end;
+    gap: 1rem;
+  }
+
   .header-center {
     display: flex;
     flex-direction: column;
@@ -75,4 +81,39 @@
       color: var(--color-txt);
     }
   }
+
+  .header-cart-btn {
+    background: none;
+    border: none;
+    cursor: pointer;
+    font-size: 0.875rem;
+    text-transform: uppercase;
+    color: var(--color-txt);
+    padding: 0;
+    line-height: 1;
+    display: flex;
+    align-items: center;
+    gap: 0.25rem;
+    transition: opacity 0.2s;
+
+    &:hover {
+      opacity: 0.7;
+    }
+  }
+
+  .header-cart-count {
+    font-weight: normal;
+
+    &:empty {
+      display: none;
+    }
+
+    &:not(:empty)::before {
+      content: '(';
+    }
+
+    &:not(:empty)::after {
+      content: ')';
+    }
+  }
 }

assets/js/cart-drawer.js

@@ -9,6 +9,8 @@
   const checkoutBtn = document.querySelector('[data-cart-checkout]');
   const closeButtons = document.querySelectorAll('[data-cart-close]');
   const totalDisplay = document.querySelector('[data-cart-total]');
+  const headerCartBtn = document.querySelector('[data-cart-open]');
+  const headerCartCount = document.querySelector('[data-cart-count]');
 
   // Get translated text
   const removeText = drawer.dataset.textRemove || 'Remove';
@@ -38,6 +40,11 @@
       btn.addEventListener('click', closeDrawer);
     });
 
+    // Open drawer from header button
+    if (headerCartBtn) {
+      headerCartBtn.addEventListener('click', openDrawer);
+    }
+
     // Checkout button
     checkoutBtn.addEventListener('click', () => {
       if (currentCart?.checkoutUrl) {
@@ -81,6 +88,24 @@
     }).format(amount);
   }
 
+  function updateCartCount() {
+    if (!currentCart || !currentCart.lines || currentCart.lines.edges.length === 0) {
+      if (headerCartCount) {
+        headerCartCount.textContent = '';
+      }
+      return;
+    }
+
+    // Calculate total quantity
+    const totalQty = currentCart.lines.edges.reduce((sum, edge) => {
+      return sum + edge.node.quantity;
+    }, 0);
+
+    if (headerCartCount) {
+      headerCartCount.textContent = totalQty > 0 ? totalQty : '';
+    }
+  }
+
   function renderCart() {
     if (!currentCart || !currentCart.lines || currentCart.lines.edges.length === 0) {
       emptyState.classList.remove('hidden');
@@ -89,6 +114,7 @@
       if (totalDisplay) {
         totalDisplay.textContent = '0,00 €';
       }
+      updateCartCount();
       return;
     }
 
@@ -103,6 +129,9 @@
       totalDisplay.textContent = formatPrice(total, currency);
     }
 
+    // Update header cart count
+    updateCartCount();
+
     // Render cart items
     itemsContainer.innerHTML = currentCart.lines.edges.map(edge => {
       const item = edge.node;

site/snippets/header.php

@@ -47,5 +47,9 @@
                 </li>
                 <?php endforeach ?>
             </ul>
+
+            <button class="header-cart-btn" data-cart-open aria-label="<?= t('cart') ?>">
+                <?= t('cart') ?> <span class="header-cart-count" data-cart-count></span>
+            </button>
         </div>
     </header>