Detect país por IP como fallback de timezone en precios

src/_includes/layouts/base.njk

@@ -12,14 +12,33 @@
   </script>
   <script>
     (function () {
-      var currency = 'usd';
-      try {
-        var tz = Intl.DateTimeFormat().resolvedOptions().timeZone;
-        if (tz && tz.indexOf('America/Argentina') === 0) {
-          currency = 'ars';
-        }
-      } catch (e) {}
-      document.documentElement.setAttribute('data-currency', currency);
+      function applyCurrency(currency) {
+        document.documentElement.setAttribute('data-currency', currency);
+      }
+
+      function countryFromTimeZone() {
+        try {
+          var tz = Intl.DateTimeFormat().resolvedOptions().timeZone;
+          if (tz && tz.indexOf('America/Argentina') === 0) return 'AR';
+        } catch (e) {}
+        return null;
+      }
+
+      var country = countryFromTimeZone();
+      applyCurrency(country === 'AR' ? 'ars' : 'usd');
+
+      var controller = new AbortController();
+      var timer = setTimeout(function () { controller.abort(); }, 3000);
+
+      fetch('https://get.geojs.io/v1/ip/country.json', { signal: controller.signal })
+        .then(function (res) { return res.json(); })
+        .then(function (data) {
+          if (data && typeof data.country === 'string' && data.country) {
+            applyCurrency(data.country === 'AR' ? 'ars' : 'usd');
+          }
+        })
+        .catch(function () {})
+        .finally(function () { clearTimeout(timer); });
     })();
   </script>
   <script src="https://cdn.tailwindcss.com"></script>