.practice-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    width: 100%;
    max-width: 700px;
    margin: 0 auto;
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 8px;
    border: 1px solid #eee;
}

.controls {
    display: flex;
    justify-content: center;
    gap: 15px;
    width: 100%;
    flex-wrap: wrap;
}

.controls button {
    padding: 12px 20px;
    font-size: 1rem;
    min-width: 150px;
}

.user-input-display {
    width: 100%;
    min-height: 50px;
    padding: 10px;
    background-color: white;
    border: 1px solid #ddd;
    border-radius: 6px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    font-size: 1.2rem;
    color: #5d8aa8;
}

.note-tag {
    background-color: #e6f2f5;
    padding: 5px 10px;
    border-radius: 4px;
    border: 1px solid #a0c0d0;
}

.options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: 10px;
    width: 100%;
    margin-top: 10px;
    padding: 10px;
    background-color: #f0f4f7;
    border-radius: 6px;
}

.option-btn {
    padding: 15px 10px;
    font-size: 1.2rem;
    background-color: white;
    color: #5d8aa8;
    border: 1px solid #ddd;
    transition: all 0.2s ease-in-out;
}

.option-btn:hover {
    background-color: #e6f2f5;
    transform: translateY(-2px);
    border-color: #a0c0d0;
}

.action-buttons {
    display: flex;
    gap: 15px;
    margin-top: 10px;
}

#submit-btn, #clear-btn {
    padding: 10px 25px;
    font-size: 1rem;
}

#submit-btn {
    background-color: #8bb4c4;
}

#submit-btn:hover {
    background-color: #79a2b2;
}

.status-container {
    margin-top: 10px;
    padding: 12px;
    background-color: #e6f2f5;
    border-radius: 6px;
    width: 100%;
    text-align: center;
}

#status-text {
    font-size: 1.1rem;
    color: #4a7694;
    font-weight: 500;
}

.score-container {
    display: flex;
    justify-content: space-between;
    width: 100%;
    margin-top: 15px;
    font-size: 1rem;
    color: #666;
    padding: 0 10px;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .practice-area {
        padding: 15px;
        gap: 15px;
    }

    .controls button {
        padding: 10px 15px;
        font-size: 0.9rem;
        min-width: 120px;
    }

    .user-input-display {
        min-height: 40px;
        padding: 8px;
        font-size: 1rem;
        gap: 6px;
    }

    .note-tag {
        padding: 4px 8px;
        font-size: 0.9rem;
    }

    .options {
        gap: 8px;
        grid-template-columns: repeat(auto-fit, minmax(70px, 1fr));
        padding: 8px;
    }

    .option-btn {
        padding: 12px 8px;
        font-size: 1rem;
    }

    .action-buttons {
        gap: 10px;
    }

    #submit-btn, #clear-btn {
        padding: 8px 20px;
        font-size: 0.9rem;
    }

    #status-text {
        font-size: 1rem;
    }

    .score-container {
        font-size: 0.9rem;
        padding: 0 5px;
    }
}

@media (max-width: 480px) {
    .practice-area {
        padding: 10px;
        gap: 10px;
    }

    .controls button {
        padding: 8px 12px;
        font-size: 0.8rem;
        min-width: 100px;
    }

    .user-input-display {
        min-height: 35px;
        padding: 6px;
        font-size: 0.9rem;
        gap: 5px;
    }

    .note-tag {
        padding: 3px 6px;
        font-size: 0.8rem;
    }

    .options {
        gap: 6px;
        grid-template-columns: repeat(auto-fit, minmax(60px, 1fr));
        padding: 6px;
    }

    .option-btn {
        padding: 10px 6px;
        font-size: 0.9rem;
    }

    .action-buttons {
        gap: 8px;
    }

    #submit-btn, #clear-btn {
        padding: 6px 15px;
        font-size: 0.8rem;
    }

    #status-text {
        font-size: 0.9rem;
    }

    .score-container {
        font-size: 0.8rem;
    }
}