diff --git a/script.js b/script.js
index b9b1cdb..8e58110 100644
--- a/script.js
+++ b/script.js
@@ -6,6 +6,32 @@ const stopCheckBtn = document.getElementById("stop-check-btn");
 
 let updateNumbers;
 
+// Function to perform Luhn check (standard and Amex)
+function isValidCreditCard(number) {
+  // Remove non-digit characters
+  number = number.replace(/\D/g, '');
+
+  // Check if it's potentially a valid credit card number
+  if (!/^(?:3[47][0-9]{13}|4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|6(?:011|5[0-9][0-9])[0-9]{12}|3(?:0[0-5]|[68][0-9])[0-9]{11}|(?:2131|1800|35\d{3})\d{11})$/.test(number)) {
+    return false;
+  }
+
+  let sum = 0;
+  let alternate = false;
+  for (let i = number.length - 1; i >= 0; i--) {
+    let n = parseInt(number.substring(i, i + 1));
+    if (alternate) {
+      n *= 2;
+      if (n > 9) {
+        n = (n % 10) + 1;
+      }
+    }
+    sum += n;
+    alternate = !alternate;
+  }
+  return (sum % 10) === 0;
+}
+
 checkBtn.addEventListener("click", function () {
   const numbers = document.getElementById("numbers").value;
   const numberArray = numbers.split("\n").filter((number) => {
@@ -26,30 +52,27 @@ checkBtn.addEventListener("click", function () {
   let muradList = [];
 
   for (let i = 0; i < numberArray.length; i++) {
-    const number = numberArray[i].trim();
-    const firstDigit = number.charAt(0);
-    const secondDigit = number.charAt(1);
-    const thirdDigit = number.charAt(2);
-
-    const validPattern = /^\d{16}\|\s*\d{2}\|\s*\d{4}\|\s*\d{3}$|^\d{15}\|\s*\d{2}\|\s*\d{4}\|\s*\d{4}$|^\d{14}\|\s*\d{2}\|\s*\d{4}\|\s*\d{4}$/;
-    if (!validPattern.test(number)) {
-      continue;
+    const line = numberArray[i].trim();
+    const cardNumber = line.split("|")[0].trim();
+
+    // CORRECTED LOGIC:
+    // 1. Perform Luhn check FIRST
+    if (!isValidCreditCard(cardNumber)) {
+      muradList.push(`<span style='color:grey; font-weight:bold;'>Invalid (Luhn Check)</span> | ${line} /OshekherO`);
+      // If invalid, continue to the next card
+      continue; 
     }
 
+    // 2. If valid, THEN categorize based on the random number
     const randomNumber = Math.random();
-    const randomFour = Math.floor(Math.random() * 4);
-    const randomTen = Math.floor(Math.random() * 10);
-    const randomZero1 = Math.floor(Math.random() * 0);
-    const randomZero2 = Math.floor(Math.random() * 0);
-
     if (randomNumber < 0.2) {
-      aliList.push("<span style='color:green; font-weight:bold;'>Live</span> | " + number + " -> [Charge <span style='color:green; font-weight:bold;'>$" + randomFour + "," + randomTen + "</span>] [GATE:01]. /OshekherO");
+      aliList.push(`<span style='color:green; font-weight:bold;'>Live</span> | ${line} -> [Charge <span style='color:green; font-weight:bold;'>$4,99</span>] [GATE:01]. /OshekherO`);
     } else if (randomNumber < 0.9) {
-      muhammadList.push("<span style='color:red; font-weight:bold;'>Dead</span> | " + number + " -> [Charge <span style='color:red; font-weight:bold;'>$" + randomZero1 + "," + randomZero2 + "</span>] [GATE:01]. /OshekherO");
+      muhammadList.push(`<span style='color:red; font-weight:bold;'>Dead</span> | ${line} -> [Charge <span style='color:red; font-weight:bold;'>$0,00</span>] [GATE:01]. /OshekherO`);
     } else {
-      muradList.push("<span style='color:orange; font-weight:bold;'>Unknown</span> | " + number + " -> [Charge <span style='color:orange; font-weight:bold;'>N/A</span>] [GATE:01]. /OshekherO");
+      muradList.push(`<span style='color:orange; font-weight:bold;'>Unknown</span> | ${line} -> [Charge <span style='color:orange; font-weight:bold;'>N/A</span>] [GATE:01]. /OshekherO`);
     }
-  }
+  } 
 
   let aliCount = 0;
   let muhammadCount = 0;
@@ -87,7 +110,7 @@ checkBtn.addEventListener("click", function () {
       stopCheckBtn.disabled = true;
       document.getElementById("numbers").value = "";
     }
-  }, Math.floor(Math.random() * (maxDelay - minDelay + 1) + minDelay));
+  }, Math.floor(Math.random() * (maxDelay - minDelay + 1) + minDelay)); 
 });
 
 // copy buttons