@keyframes zoom {
  0% {
    transform: scale(0.1);
  }
  60% {
    transform: scale(1.15);
  }
  100% {
    transform: scale(1);
  }
}

* {
  margin: 0;
  padding: 0;
  box-sizing: content-box;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: black;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: none;
  height: 100vh;
  background-color: rgb(20, 20, 20);
}

#game-container {
  color: white;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  animation: none;
}

img {
  width: 35px;
  animation: 0.5s ease-in-out 0s 1 zoom;
  margin-right: 10px;
}

#clickButton {
  padding-block: 10px;
  font-size: 18px;
  cursor: pointer;
  background-color: #4caf50;
  color: #fff;
  border: none;
  width: 230px;
  font-weight: bold;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 5px;
  margin-block: 30px;
  transition: box-shadow 0.1s ease, transform 0.1s ease,
    background-color 0.3s ease;
  animation: 0.5s ease-in-out 0s 1 zoom;
  box-shadow: 3px 3px 5px green;
  position: relative;
}

#clickButton:hover {
  background-color: #45a049;
}

.top {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.bottom {
  display: flex;
  gap: 30px;
  margin-top: 10px;
}

.bottom-btn {
  border-radius: 5px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  height: 50px;
  padding-inline: 20px;
  background-color: rgb(40, 40, 40);
  animation: 0.5s ease-in-out 0s 1 zoom;
}

.bottom-btn img {
  width: 30px;
}

.stats {
  display: flex;
  justify-content: space-between;
  font-size: 20px;
  align-items: center;
  flex-direction: column;
  animation: 0.5s ease-in-out 0s 1 zoom;
  gap: 10px;
}

.other-stats {
  display: flex;
  gap: 30px;
  flex-direction: row;
  animation: 0.5s ease-in-out 0s 1 zoom;
}

#energy {
  font-size: 30px;
  font-weight: bold;
}

h1 {
  font-size: 40px;
  margin-block: 0px;
  margin-bottom: 50px;
  animation: 0.5s ease-in-out 0s 1 zoom;
}

.popup-drop {
  width: 100vw;
  height: 100vh;
  backdrop-filter: blur(5px);
  position: fixed;
  display: flex;
  align-items: center;
  justify-content: center;
  top: 0;
  visibility: hidden;
  left: 0;
  transition: opacity 0.3s ease;
  z-index: 100;
}

.popup {
  width: 350px;
  height: 400px;
  background-color: black;
  border-radius: 20px;
  border: 3px solid rgb(40, 40, 40);
  display: flex;
  flex-direction: column;
  color: white;
  padding-inline: 30px;
  position: relative;
  overflow: auto;
}

.popup-title {
  text-align: center;
  padding-block: 30px;
  font-size: 30px;
}

.popup-close {
  position: absolute;
  top: 15px;
  right: 15px;
  width: 20px;
  cursor: pointer;
  padding: 0;
  animation: none;
  transition: transform 0.3s ease;
}

.popup-close:hover {
  transform: scale(1.3);
}

.popup-close::before,
.upgrade-item {
  display: flex;
  justify-content: space-between;
  margin-bottom: 30px;
  align-items: center;
}

.upgrade-title {
  font-weight: bold;
  font-size: 20px;
  margin-bottom: 5px;
}

.upgrade-btn {
  background-color: rgb(40, 40, 40);
  border-radius: 5px;
  padding-inline: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-weight: bold;
  height: 40px;
}

.version,
#reset {
  color: gray;
  position: absolute;
  bottom: 10px;
  right: 10px;
  font-size: 12px;
  font-weight: bold;
}

#reset {
  left: 10px;
  cursor: pointer;
}

#reset:hover {
  text-decoration: underline;
}

#gold-atom {
  width: 60px;
  position: absolute;
  cursor: pointer;
  visibility: hidden;
  width: 60px;
  padding: 10px;
  border-radius: 100px;
  height: 60px;
  color: white;
  text-align: center;
  font-weight: bold;
}

.gold-atom {
  width: 100%;
  height: 100%;
}