body {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', sans-serif;
  background-color: #12141c;
  color: #f0f0f0;
}

.app-container {
  display: flex;
  height: 100vh;
}

.puzzle-container {
  flex: 3;
  padding: 5%;
  background-color: #1c1f2b;
}

.leaderboard-container {
  flex: 1;
  background-color: #222430;
  padding: 5%;
  border-left: 0.5% solid #333;
  overflow-y: auto;
}

#playerName,
input {
  padding: 1.5%;
  margin-top: 2%;
  border-radius: 8px;
  font-size: 1rem;
  width: 80%;
  border: none;
  box-sizing: border-box;
}

button {
  padding: 1.5% 3%;
  margin-top: 2%;
  background-color: #5f87ff;
  border: none;
  color: white;
  font-size: 1rem;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.2s ease-in-out;
}

button:hover {
  background-color: #4a75f8;
}

#feedback {
  margin-top: 2%;
  font-weight: bold;
}

.leaderboard-container h2 {
  text-align: center;
  margin-bottom: 5%;
}

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

#leaderboard li {
  background: #2a2d3a;
  margin: 3% 0;
  padding: 3%;
  border-radius: 8px;
  text-align: center;
}

.door {
  width: 25%;
  height: auto;
  aspect-ratio: 2/3;
  margin: 5% auto;
  border-radius: 8px;
  transition: background-color 0.3s;
}