body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #1a1a2e; /* Dark blue background */
    font-family: 'Arial', sans-serif;
    color: #e6e6e6;
    overflow: hidden; /* Prevent scrollbars */
}

.game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    background-color: rgba(255, 255, 255, 0.05);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
    z-index: 10;
}

.game-header {
    text-align: center;
    width: 100%;
}

h1 {
    margin: 0 0 10px 0;
    color: #4cc9f0;
    text-shadow: 0 0 10px rgba(76, 201, 240, 0.5);
}

.score-display, .high-score {
    font-size: 18px;
    margin: 5px 0;
    color: #f72585;
}

canvas {
    border: 2px solid #4361ee;
    border-radius: 5px;
    background-color: #0f0f1a; /* Dark background for better contrast */
    box-shadow: 0 0 10px rgba(67, 97, 238, 0.5);
    transition: transform 0.3s ease;
}

canvas:hover {
    transform: scale(1.02); /* Subtle hover effect */
}

.game-controls {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

button {
    background-color: #4361ee;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.2s, transform 0.1s;
}

button:hover {
    background-color: #3a56d4;
    transform: translateY(-2px);
}

button:active {
    transform: translateY(1px);
}

.instructions {
    margin-top: 10px;
    text-align: center;
    font-size: 14px;
    color: #b5b5b5;
}

.game-message {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 20px 30px;
    border-radius: 8px;
    text-align: center;
    z-index: 20;
    font-size: 24px;
}

.hidden {
    display: none;
}

/* Optimized spinning cube decoration */
.decoration {
    position: fixed;
    bottom: 20px;
    right: 20px;
    opacity: 0.5;
    z-index: 1;
    pointer-events: none; /* Prevent interaction with the cube */
}

.scene {
    width: 100px;
    height: 100px;
    perspective: 600px;
}

.cube {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    animation: spin 10s infinite linear;
    will-change: transform; /* Optimize animation performance */
}

.face {
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: #4cc9f0;
    opacity: 0.7;
    border: 1px solid #f72585;
}

.front { transform: translateZ(50px); }
.back { transform: rotateY(180deg) translateZ(50px); }
.right { transform: rotateY(90deg) translateZ(50px); }
.left { transform: rotateY(-90deg) translateZ(50px); }
.top { transform: rotateX(90deg) translateZ(50px); }
.bottom { transform: rotateX(-90deg) translateZ(50px); }

@keyframes spin {
    0% { transform: rotateX(0) rotateY(0); }
    100% { transform: rotateX(360deg) rotateY(360deg); }
}