body { 
    margin: 0; 
    background: #111; 
    color: #fff; 
    font-family: monospace; 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    height: 100vh; 
    overflow: hidden; 
    user-select: none;
}

#ui { 
    padding: 20px; 
    text-align: center; 
}

#playerProfile {
    color: #00ffcc;
    font-size: 14px;
    margin-top: 5px;
}

#menu {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: #222;
    padding: 30px;
    border: 2px solid #444;
    width: 100%;
    max-width: 400px;
    box-sizing: border-box;
    box-shadow: 0 0 20px rgba(0,0,0,0.5);
}

#leaderboard {
    width: 100%;
    text-align: center;
    margin-bottom: 20px;
}

#leaderboard h3 {
    margin: 0 0 10px 0;
    color: #ff0077;
}

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

#leaderboard li {
    padding: 8px 0;
    border-bottom: 1px solid #333;
    font-size: 16px;
}

canvas { 
    background: #222; 
    border: 2px solid #444; 
    cursor: pointer; 
    box-shadow: 0 0 20px rgba(0,0,0,0.5); 
    display: none;
    width: 100%;
    max-width: 800px;
    height: auto;
    box-sizing: border-box;
}

body.playing #menu { display: none; }
body.playing canvas { display: block; }

button { 
    background: #0088cc; 
    color: #fff; 
    border: none; 
    padding: 12px 24px; 
    font-family: monospace; 
    cursor: pointer; 
    margin-top: 15px; 
    font-size: 18px;
    font-weight: bold;
    width: 100%;
}

button:hover { background: #006699; }

button:disabled {
    background: #444;
    color: #888;
    cursor: not-allowed;
}