body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #222;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

#game-container {
    background-color: #444;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
    padding: 20px;
    text-align: center;
}

.title {
    font-size: 36px;
    margin-bottom: 20px;
}

#score-panel {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.score-label {
    font-size: 24px;
    margin-right: 10px;
}

.score-value {
    font-size: 24px;
    font-weight: bold;
}

#grid-container {
    display: grid;
    grid-template-columns: repeat(4, 80px);
    grid-gap: 10px;
    justify-content: center;
    margin-bottom: 20px;
}

.tile {
    width: 80px;
    height: 80px;
    background-color: #777;
    border-radius: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    font-weight: bold;
    color: #fff;
}

#game-over {
    font-size: 36px;
    font-weight: bold;
    color: #ff0000;
    margin-bottom: 20px;
}

.button {
    background-color: #4CAF50; /* Green */
    border: none;
    color: white;
    padding: 15px 32px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
    border-radius: 8px;
    transition: background-color 0.3s;
}

.button:hover {
    background-color: #45a049;
}

.hidden {
    display: none;
}