var cards = document.querySelectorAll('.card');
    var targetValues = [100, 500, 400, 50]; // Farklı kartlar için hedef sayılar

    cards.forEach(function(card, index) {
      var counterElement = card.querySelector('.card-sayı');
      var counter = 0;
      var target = targetValues[index];

      function startCount() {
        counterElement.classList.add('show');

        var interval = setInterval(function() {
          if (counter >= target) {
            clearInterval(interval);
          } else {
            counter++;
            counterElement.querySelector('.sayı-text').textContent = counter;
          }
        }, 10);
      }

      var observer = new IntersectionObserver(function(entries, observer) {
        entries.forEach(function(entry) {
          if (entry.isIntersecting) {
            startCount();
            observer.unobserve(entry.target);
          }
        });
      }, { threshold: 0.5 });

      observer.observe(card);
    });