body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
}

h1 {
    text-align: center;
    color: #333;
}

#menu-overlay {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.6);
    z-index: 10;
}

.menu-box {
    background: #fff;
    padding: 24px;
    border-radius: 10px;
    width: min(360px, calc(100% - 40px));
    box-shadow: 0 10px 30px rgba(0,0,0,0.25);
    text-align: center;
}

.menu-box h2 {
    margin-top: 0;
}

.menu-box input {
    width: 100%;
    padding: 10px;
    font-size: 16px;
    margin: 12px 0;
    border: 1px solid #999;
    border-radius: 6px;
}

.menu-box button {
    padding: 10px 18px;
    font-size: 16px;
    cursor: pointer;
    border: none;
    background: #4a90e2;
    color: #fff;
    border-radius: 6px;
}

#game-container {
    width: fit-content;
    margin: 20px auto;
    border: 2px solid #333;
    position: relative;
    background-color: #fff;
    padding: 10px;
}

#gameCanvas {
    display: block;
    width: 400px;
    height: 400px;
    background-color: #fff;
    border: 1px solid #ccc;
    margin: 0 auto 20px;
}

#timer {
    text-align: center;
    font-size: 18px;
    margin-bottom: 12px;
    color: #333;
    font-weight: bold;
}

#leaderboard-section,
#menu-leaderboard {
    margin-top: 16px;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    background: #fafafa;
}

#leaderboard-container h3,
#menu-leaderboard h3 {
    margin: 0 0 10px;
}

#leaderboard-list {
    padding-left: 20px;
    margin: 0;
}

#leaderboard-list li {
    margin-bottom: 6px;
}

.player {
    width: 20px;
    height: 20px;
    background-color: #ff0000;
    position: absolute;
}

.wall {
    background-color: #000;
    position: absolute;
}

.exit {
    width: 20px;
    height: 20px;
    background-color: #00ff00;
    position: absolute;
}