body {
    font-family: 'Arial', sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f8ff;
}

h1 {
    color: #0056b3;
    margin-bottom: 10px;
}

.game-description {
    text-align: center;
    margin-bottom: 15px;
    color: #666;
}

.game-description p {
    margin: 5px 0;
    font-size: 16px;
}

.info-panel {
    font-size: 22px;
    margin-bottom: 10px;
    width: 480px;
    display: flex;
    justify-content: space-between;
}

.records-panel {
    font-size: 18px;
    margin-bottom: 15px;
    width: 480px;
    display: flex;
    justify-content: space-between;
    color: #666;
}

#progress-indicator {
    font-weight: bold;
}

.progress-better {
    color: #4CAF50;
}

.progress-worse {
    color: #f44336;
}

.game-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    width: 400px;
    height: 400px;
    background-color: #a9a9a9; /* 停車場地顏色 */
    padding: 15px;
    border-radius: 10px;
}

.parking-spot {
    background-color: #d3d3d3;
    border-radius: 10px;
    border: 2px dashed #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 60px;
    user-select: none; /* 防止選取文字 */
}

.parking-spot.up {
    background-color: #f0f8ff;
    animation: pop-up 0.2s ease-out;
}

@keyframes pop-up {
    from { transform: scale(0.8); }
    to { transform: scale(1); }
}

#start-button, .back-button {
    margin-top: 20px;
    padding: 12px 25px;
    font-size: 18px;
    border-radius: 8px;
    border: 2px solid #0056b3;
    cursor: pointer;
    background-color: #fff;
    color: #0056b3;
    font-weight: bold;
    text-decoration: none;
    transition: background-color 0.3s, color 0.3s;
}

#start-button:hover, .back-button:hover {
    background-color: #0056b3;
    color: #fff;
}