body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  background: linear-gradient(to right, #ff7e5f, #feb47b); /* グラデーション背景 */
}

#gameContainer {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  border: 2px solid #ccc;
  padding: 20px;
  border-radius: 10px;
  background-color: #fff;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  min-width: 300px;
  margin-right: 50px;
}

#playerName {
  padding: 10px;
  font-size: 18px;
  margin: 10px 0;
}

#clickButton {
  padding: 40px 60px;
  font-size: 28px;
  cursor: pointer;
  margin-top: 20px;
  transition: transform 0.2s;
}

#clickButton.clicked {
  transform: scale(1.1);
}

#startButton {
  padding: 30px 50px;
  font-size: 24px;
  cursor: pointer;
  margin-top: 20px;
}

#score, #timer, #highScore {
  font-size: 28px;
  margin-top: 20px;
}

#memoryBarContainer {
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 300px;
  border: 2px solid #ccc;
  background-color: #fff;
  border-radius: 5px;
  overflow: hidden;
}

#memoryBar {
  width: 100%;
  height: 0;
  background-color: #76c7c0;
  position: absolute;
  bottom: 0;
}

#rankingContainer {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 200px;
  border: 2px solid #ccc;
  padding: 20px;
  border-radius: 10px;
  background-color: #fff;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

#rankingList {
  list-style-type: none;
  padding: 0;
  margin: 0;
}