the cart hover only when possible

assets/views/base.html

@@ -48,6 +48,12 @@
         if (!v) return 0;
         return v.split(',').reduce(function (s, e) { return s + (parseInt(e.split(':')[1]) || 0) }, 0);
       }
+      // True while any other navbar menu (profile / settings / mobile / category
+      // toggle) is open — those triggers expose aria-expanded="true". Used to
+      // suppress the cart hover preview so menus don't stack/overlap.
+      function anyMenuOpen() {
+        return !!document.querySelector('header [aria-expanded="true"]');
+      }
       // Show a floating toast notification. Usage: toast('Saved').
       // Bridges to the vendored Penguin UI toast component, which listens for a
       // `notify` event with { variant, title, message }.
@@ -97,23 +103,43 @@
         </ul>
 
         <!-- right side: cart + settings + mobile toggle -->
-        <div class="ml-auto flex items-center gap-2">
+        <div class="ml-auto flex items-center gap-3">
           <!-- customer profile dropdown (avatar + name + account type) -->
           {% if logged_in_customer %}
           {% include "partials/profile_menu.html" %}
           {% endif %}
-          <!-- cart with live item-count badge read from the `cart` cookie.
-               hx-boost=false: a plain full-page navigation to /cart, no SPA swap. -->
-          <a href="/cart" data-nav="/cart" hx-boost="false"
-            x-data="{ count: 0 }"
-            x-init="count = cartCount(); ['htmx:afterSwap', 'htmx:afterRequest'].forEach(function (e) { window.addEventListener(e, function () { count = cartCount() }) })"
-            aria-label="{{ t(key='cart-title', lang=lang | default(value='sk')) }}"
-            title="{{ t(key='cart-title', lang=lang | default(value='sk')) }}"
-            class="relative inline-flex size-9 shrink-0 items-center justify-center rounded-radius bg-transparent text-secondary transition hover:opacity-75 focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-secondary active:opacity-100 active:outline-offset-0 dark:text-secondary-dark dark:focus-visible:outline-secondary-dark">
-            {{ ui::icon(name="cart") }}
-            <span x-show="count > 0" x-cloak x-text="count"
-              class="absolute -right-1 -top-1 inline-flex min-w-4 items-center justify-center rounded-full bg-primary px-1 text-[10px] font-semibold leading-4 text-on-primary dark:bg-primary-dark dark:text-on-primary-dark"></span>
-          </a>
+          <!-- cart: hover opens an Alza-style mini-cart preview (Penguin
+               dropdown-with-hover), lazy-loaded from /partials/cart on each hover
+               so it's always fresh. Click still does a full navigation to /cart
+               (hx-boost=false; the explicit hx-trigger is mouseenter, so click is
+               not an htmx trigger). The badge reads the `cart` cookie client-side. -->
+          <div x-data="{ isOpen: false, leaveTimeout: null }"
+            x-on:mouseleave="leaveTimeout = setTimeout(() => isOpen = false, 250)"
+            x-on:mouseenter="leaveTimeout && clearTimeout(leaveTimeout)"
+            x-on:keydown.esc.window="isOpen = false"
+            class="relative">
+            <a href="/cart" data-nav="/cart" hx-boost="false"
+              x-on:mouseenter="if (!anyMenuOpen()) isOpen = true"
+              x-data="{ count: 0 }"
+              x-init="count = cartCount(); ['htmx:afterSwap', 'htmx:afterRequest'].forEach(function (e) { window.addEventListener(e, function () { count = cartCount() }) })"
+              hx-get="/partials/cart" hx-trigger="mouseenter delay:150ms" hx-target="#cart-preview-body" hx-swap="innerHTML"
+              aria-label="{{ t(key='cart-title', lang=lang | default(value='sk')) }}"
+              title="{{ t(key='cart-title', lang=lang | default(value='sk')) }}"
+              class="relative inline-flex size-9 shrink-0 items-center justify-center rounded-radius bg-transparent text-secondary transition hover:opacity-75 focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-secondary active:opacity-100 active:outline-offset-0 dark:text-secondary-dark dark:focus-visible:outline-secondary-dark">
+              {{ ui::icon(name="cart") }}
+              <span x-show="count > 0" x-cloak x-text="count"
+                class="absolute -right-1 -top-1 inline-flex min-w-4 items-center justify-center rounded-full bg-primary px-1 text-[10px] font-semibold leading-4 text-on-primary dark:bg-primary-dark dark:text-on-primary-dark"></span>
+            </a>
+            <!-- hover preview panel (no id on the panel → not htmx-settled on boosted nav) -->
+            <div x-cloak x-show="isOpen" x-transition
+              x-on:mouseenter="isOpen = true"
+              class="absolute right-0 mt-2 w-80 overflow-hidden rounded-radius border border-outline bg-surface-alt shadow-lg dark:border-outline-dark dark:bg-surface-dark-alt"
+              role="dialog" aria-label="{{ t(key='cart-title', lang=lang | default(value='sk')) }}">
+              <div id="cart-preview-body">
+                <div class="px-4 py-10 text-center text-sm text-on-surface dark:text-on-surface-dark">…</div>
+              </div>
+            </div>
+          </div>
 
           <!-- settings (language + theme) dropdown (self-contained Alpine state) -->
           {% include "partials/settings_dropdown.html" %}

assets/views/shop/_cart_preview.html

@@ -0,0 +1,31 @@
+{# Mini-cart preview shown on hover over the navbar cart (Alza-style).
+   Lazy-loaded via htmx from /partials/cart into the hover dropdown panel in
+   base.html. Receives: items[], total, currency, lang. #}
+{% import "macros/ui.html" as ui %}
+{% if items | length > 0 %}
+<div class="max-h-80 divide-y divide-outline overflow-y-auto dark:divide-outline-dark">
+  {% for item in items %}
+  <div class="flex items-start gap-3 px-4 py-3">
+    <div class="min-w-0 flex-1">
+      <a href="/shop/{{ item.slug }}" class="block truncate text-sm font-medium text-on-surface-strong hover:text-primary dark:text-on-surface-dark-strong dark:hover:text-primary-dark">{{ item.name }}</a>
+      <p class="mt-0.5 text-xs tabular-nums text-on-surface dark:text-on-surface-dark">{{ item.quantity }} × {{ item.price }} {{ item.currency }}</p>
+    </div>
+    <span class="shrink-0 text-sm font-semibold tabular-nums text-on-surface-strong dark:text-on-surface-dark-strong">{{ item.line_total }} {{ item.currency }}</span>
+  </div>
+  {% endfor %}
+</div>
+<div class="border-t border-outline px-4 py-3 dark:border-outline-dark">
+  <div class="mb-3 flex items-center justify-between">
+    <span class="text-sm text-on-surface dark:text-on-surface-dark">{{ t(key="cart-total", lang=lang | default(value='sk')) }}</span>
+    <span class="text-base font-bold tabular-nums text-primary dark:text-primary-dark">{{ total }} {{ currency }}</span>
+  </div>
+  <div class="flex gap-2">
+    {{ ui::button(href="/cart", variant="outline-primary", label=t(key="cart-title", lang=lang | default(value='sk')), extra="flex-1", attrs='hx-boost="false"') }}
+    {{ ui::button(href="/checkout", variant="primary", label=t(key="cart-checkout", lang=lang | default(value='sk')), extra="flex-1", attrs='hx-boost="false"') }}
+  </div>
+</div>
+{% else %}
+<div class="px-4 py-10 text-center text-sm text-on-surface dark:text-on-surface-dark">
+  {{ t(key="cart-empty", lang=lang | default(value='sk')) }}
+</div>
+{% endif %}

src/controllers/cart.rs

@@ -253,10 +253,39 @@ async fn show(
     Ok((jar.add(cart_cookie(rebuilt)), response).into_response())
 }
 
+/// Mini-cart preview for the navbar hover dropdown. Lazy-loaded via htmx from
+/// the header; returns just the `shop/_cart_preview.html` fragment.
+#[debug_handler]
+async fn preview(
+    jar: CookieJar,
+    ViewEngine(v): ViewEngine<TeraView>,
+    State(ctx): State<AppContext>,
+) -> Result<Response> {
+    let (lines, valid, total) = resolve_cart(&ctx, &jar).await?;
+    let currency = lines
+        .first()
+        .and_then(|line| line["currency"].as_str())
+        .unwrap_or("EUR")
+        .to_string();
+    let rebuilt = serialize_cart(&valid);
+    let response = format::view(
+        &v,
+        "shop/_cart_preview.html",
+        json!({
+            "items": lines,
+            "total": format_price(total),
+            "currency": currency,
+            "lang": current_lang(&jar),
+        }),
+    )?;
+    Ok((jar.add(cart_cookie(rebuilt)), response).into_response())
+}
+
 pub fn routes() -> Routes {
     Routes::new()
         .add("/cart", get(show))
         .add("/cart/add", post(add))
         .add("/cart/update", post(update))
         .add("/cart/remove", post(remove))
+        .add("/partials/cart", get(preview))
 }