views: add checkout pages

views/checkout/success.php

@@ -0,0 +1,21 @@
+<section class="block">
+    <div class="wrap" style="max-width:560px;text-align:center">
+        <?php if ($order !== null && $paymentStatus === 'paid'): ?>
+            <div class="empty" style="border-style:solid">
+                <svg class="icon empty__icon" viewBox="0 0 24 24" style="color:var(--positive)"><path d="M20 6 9 17l-5-5"/></svg>
+                <h1>Payment received</h1>
+                <p class="muted">Thank you. Order <strong>#<?= (int) $order['id'] ?></strong> is confirmed and now marked as <strong>paid</strong>.</p>
+                <div class="row gap-lg" style="justify-content:center" >
+                    <a class="btn btn--primary mt" href="/account/orders/<?= (int) $order['id'] ?>">View order</a>
+                    <a class="btn mt" href="/products">Keep shopping</a>
+                </div>
+            </div>
+        <?php else: ?>
+            <div class="empty">
+                <h1>Payment pending</h1>
+                <p class="muted">We have not confirmed this payment yet. If you completed checkout, your order status will update shortly.</p>
+                <a class="btn mt" href="/account/orders">Go to your orders</a>
+            </div>
+        <?php endif; ?>
+    </div>
+</section>