body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
}

#game-container {
    text-align: center;
    width: 300px;
}

button {
    font-size: 1em;
    padding: 10px 20px;
    margin: 10px;
    cursor: pointer;
}

#message {
    font-size: 1.2em;
    margin-bottom: 20px;
}

#reset-button {
    background-color: #f08080;
    color: white;
}

#history-container {
    margin-top: 20px;
}

#history-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr)); /* 32個で折り返し */
    grid-auto-rows: auto;
    max-height: 800px;
    gap: 5px;
}

.history-item {
    font-size: 0.9em;
    padding: 5px;
    text-align: center;
    background-color: #e0e0e0;
    border: 1px solid #ccc;
    border-radius: 3px;
}

.history-item.hit {
    background-color: #f88; /* 当たりアイテムを赤色に */
    color: white;          /* テキスト色を白にして見やすく */
}