body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: black;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  color: #ffd700;
}

#gameContainer {
  text-align: center;
  width: 100%;
  max-width: 400px;
  padding: 10px;
  background-color: #1e1e1e;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(255, 223, 0, 0.5);
}

h1 {
  font-size: 36px;
  margin: 10px 0;
  color: #ffd700;
  text-shadow: 0 0 10px #ffd700, 0 0 20px #ffa500;
}

#scoreContainer h2 {
  margin: 0;
  font-size: 18px;
}

#grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  background-color: #222;
  padding: 10px;
  border-radius: 10px;
}

.tile {
  width: 80px;
  height: 80px;
  background-color: #333;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 24px;
  font-weight: bold;
  border-radius: 5px;
  text-shadow: 0 0 10px #ffd700;
  box-shadow: 0 5px 15px rgba(255, 223, 0, 0.2);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.tile-2 {
  background-color: #ffd700;
}

.tile-4 {
  background-color: #ffcc33;
}

.tile-8 {
  background-color: #ff9900;
  color: #fff;
}

.tile-16 {
  background-color: #ff6600;
  color: #fff;
}

.tile-32 {
  background-color: #ff3300;
  color: #fff;
}

.tile-64 {
  background-color: #cc0000;
  color: #fff;
}

.tile-128 {
  background-color: #996600;
  color: #fff;
}

.tile-256 {
  background-color: #663300;
  color: #fff;
}

.tile-512 {
  background-color: #330000;
  color: #fff;
}

.tile-1024 {
  background-color: #222222;
  color: #fff;
}

.tile-2048 {
  background-color: gold;
  color: #fff;
  box-shadow: 0 0 20px gold, 0 0 30px orange;
}

#restartButton {
  margin-top: 20px;
  padding: 10px 20px;
  font-size: 18px;
  color: white;
  background-color: #444;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

#restartButton:hover {
  background-color: #666;
}