$(window).on("scroll", function(e) {
  var scrollTop = $(window).scrollTop();

  if (scrollTop > 0) {
    $("header").addClass("scrolled");
  } else {
    $("header").removeClass("scrolled");
  }
});

var $headerHeight = $(".header").innerHeight();
$(document).ready(function() {
  $("#mm-my-menu").css({ height: `calc(100% - ${$headerHeight}px)` });
  var scrollTop = $(window).scrollTop();

  if (scrollTop > 0) {
    $("header").addClass("scrolled");
  } else {
    $("header").removeClass("scrolled");
  }
});
var $headerScrollHeight = $(".header").height();
$(window).scroll(function() {
  if ($(this).scrollTop() === 0) {
    $("#mm-my-menu").css({ height: `calc(100% - ${$headerHeight}px)` });
  } else {
    $("#mm-my-menu").css({ height: `calc(100% - ${$headerScrollHeight}px)` });
  }
});

// Odliczanie;

$.fn.isOnScreen = function() {
  var win = $(window);

  var viewport = {
    top: win.scrollTop(),
    left: win.scrollLeft()
  };
  viewport.right = viewport.left + win.width();
  viewport.bottom = viewport.top + win.height();

  var bounds = this.offset();
  bounds.right = bounds.left + this.outerWidth();
  bounds.bottom = bounds.top + this.outerHeight();

  return !(
    viewport.right < bounds.left ||
    viewport.left > bounds.right ||
    viewport.bottom < bounds.top ||
    viewport.top > bounds.bottom
  );
};

$(document).ready(function() {
  $(window).scroll(function() {
    if ($('#counters').length && $("#counters").isOnScreen()) {
      counter();
    }
  });
});

function counter() {
  $(".counter").each(function() {
    var $this = $(this),
      countTo = $this.attr("data-count");

    $({ countNum: $this.text() }).animate(
      {
        countNum: countTo
      },

      {
        duration: 800,
        easing: "linear",
        step: function() {
          $this.text(Math.floor(this.countNum));
        },
        complete: function() {
          $this.text(this.countNum);
        }
      }
    );
  });
}

//insta feed//