diff --git a/backend/server.py b/backend/server.py
index a300fc6..7585768 100644
--- a/backend/server.py
+++ b/backend/server.py
@@ -516,7 +516,8 @@ def handle_score(handler: BaseHTTPRequestHandler, query: dict[str, list[str]]) -
         json_response(handler, HTTPStatus.BAD_REQUEST, {"error": "invalid_query"})
         return
 
-    if not (47.0 <= lat <= 55.5 and 5.0 <= lon <= 16.0):
+    # Accept any valid geographic coordinate so every point can get a score.
+    if not (-90.0 <= lat <= 90.0 and -180.0 <= lon <= 180.0):
         json_response(handler, HTTPStatus.BAD_REQUEST, {"error": "lat_lon_out_of_bounds"})
         return
 
diff --git a/src/app.js b/src/app.js
index 9340cf7..f2becb4 100644
--- a/src/app.js
+++ b/src/app.js
@@ -268,8 +268,8 @@ function setCoordinates(lat, lon, options = {}) {
 }
 
 function updateMapFromInputs(zoom = null) {
-  const lat = Number(latEl.value);
-  const lon = Number(lonEl.value);
+  const lat = parseCoordinateInput(latEl.value);
+  const lon = parseCoordinateInput(lonEl.value);
   if (!Number.isFinite(lat) || !Number.isFinite(lon)) {
     return;
   }
@@ -614,12 +614,15 @@ function findCachedScore(lat, lon) {
 }
 
 async function loadScore() {
-  const lat = Number(latEl.value);
-  const lon = Number(lonEl.value);
+  const lat = parseCoordinateInput(latEl.value);
+  const lon = parseCoordinateInput(lonEl.value);
   if (!Number.isFinite(lat) || !Number.isFinite(lon)) {
-    alert("Bitte gültige Koordinaten eingeben.");
+    alert("Bitte gültige Koordinaten eingeben (z. B. 51.10893 oder 51,10893).");
     return;
   }
+  // Normalize input display to avoid locale-related parsing issues on repeated requests.
+  latEl.value = lat.toFixed(6);
+  lonEl.value = lon.toFixed(6);
 
   loadScoreEl.disabled = true;
   const at = new Date().toISOString();
@@ -627,6 +630,8 @@ async function loadScore() {
   try {
     const response = await fetch(`${API_BASE}/spot/score?lat=${encodeURIComponent(lat)}&lon=${encodeURIComponent(lon)}&at=${encodeURIComponent(at)}`);
     if (!response.ok) {
+      const payload = await response.json().catch(() => ({}));
+      signalStatusEl.textContent = `Live-Score fehlgeschlagen: ${payload.error || `HTTP ${response.status}`}.`;
       throw new Error("api_error");
     }
 
@@ -652,6 +657,17 @@ async function loadScore() {
   }
 }
 
+function parseCoordinateInput(value) {
+  if (typeof value !== "string") {
+    return Number.NaN;
+  }
+  const normalized = value.trim().replace(",", ".");
+  if (!normalized) {
+    return Number.NaN;
+  }
+  return Number(normalized);
+}
+
 function renderScore(data, fromCache, cacheTime = "") {
   scoreEl.textContent = String(data.score);
 
diff --git a/src/index.html b/src/index.html
index d6115f5..27f3efb 100644
--- a/src/index.html
+++ b/src/index.html
@@ -33,11 +33,11 @@
         <div class="field-grid">
           <label>
             Latitude
-            <input id="lat" type="number" step="0.000001" placeholder="51.2500" />
+            <input id="lat" type="number" step="0.000001" inputmode="decimal" placeholder="51.2500" />
           </label>
           <label>
             Longitude
-            <input id="lon" type="number" step="0.000001" placeholder="6.9700" />
+            <input id="lon" type="number" step="0.000001" inputmode="decimal" placeholder="6.9700" />
           </label>
         </div>