body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background: linear-gradient(to bottom, #87CEEB, #98D8E8);
    color: #333;
    text-align: center;
    user-select: none;
}

.ui {
    margin: 20px auto;
    padding: 15px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    max-width: 800px;
}

#score, #health {
    font-size: 24px;
    font-weight: bold;
    margin: 10px 0;
    color: #2c3e50;
}

button {
    padding: 12px 24px;
    font-size: 18px;
    margin: 8px;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.3s;
}

button:hover {
    background: #2980b9;
}

button:active {
    transform: scale(0.98);
}

canvas {
    border: 3px solid #34495e;
    border-radius: 10px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.3);
    display: block;
    margin: 20px auto;
    background: #87CEEB;
}