body {
  margin: 0;
  font-family: 'Poppins', sans-serif;
  background: radial-gradient(circle at center, #111, #000);
  color: white;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.game-container {
  text-align: center;
}

h1 {
  text-shadow: 0 0 15px limegreen, 0 0 30px greenyellow;
}

.hud {
  display: flex;
  justify-content: space-around;
  font-size: 18px;
  margin-bottom: 10px;
}

.game-area {
  position: relative;
  width: 600px;
  height: 400px;
  border: 3px solid limegreen;
  background: rgba(30, 30, 30, 0.9);
  overflow: hidden;
  box-shadow: 0 0 20px limegreen, inset 0 0 20px #0f0;
}

.character {
  position: absolute;
  width: 70px;
  height: 70px;
  background-size: cover;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.character.zombie {
  background-image: url('https://i.ibb.co/3StQXcD/zombie.png');
  filter: drop-shadow(0 0 10px limegreen);
}

.character.human {
  background-image: url('https://i.ibb.co/vX3qCZ2/human.png');
  filter: drop-shadow(0 0 10px red);
}

.character:hover {
  transform: scale(1.1);
}

.controls {
  margin-top: 10px;
}

button {
  margin: 5px;
  padding: 10px 15px;
  font-size: 16px;
  border: none;
  border-radius: 8px;
  background-color: #0f0;
  color: black;
  font-weight: bold;
  cursor: pointer;
  box-shadow: 0 0 15px #0f0;
  transition: all 0.2s;
}

button:hover {
  background-color: #8fff8f;
  box-shadow: 0 0 30px #0f0;
}

#message {
  margin-top: 10px;
  font-size: 20px;
  text-shadow: 0 0 10px yellow;
}