body {
  margin: 0;
  font-family: Arial;
  background: linear-gradient(135deg, #1e3c72, #2a5298);
  color: white;
  text-align: center;
}

.container {
  margin-top: 100px;
}

input {
  padding: 10px;
  font-size: 18px;
}

button {
  padding: 10px 15px;
  margin-left: 10px;
  cursor: pointer;
  border: none;
  background: #00c6ff;
  color: white;
  border-radius: 5px;
}

#wordDisplay {
  font-size: 30px;
  letter-spacing: 10px;
}

.popup {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  background: #111;
  padding: 30px;
  border-radius: 15px;
  transition: 0.3s;
}

.popup.show {
  transform: translate(-50%, -50%) scale(1);
}