#cd-histogram-container {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
}

.hidden {
    display: none !important;
}

.select-container {
    margin-bottom: 20px;
}

.select-container label,
.rate-select-container label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: #333;
}

#cane-type-select {
    width: 100%;
    padding: 10px;
    font-size: 16px;
}

.rate-select-container {
    margin: 20px 0;
}

.rate-select-group {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.rate-select {
    padding: 10px;
    font-size: 16px;
    min-width: 120px;
}

.rate-select option:disabled {
    color: #999;
    background-color: #f5f5f5;
}

.rate-separator {
    font-size: 16px;
    color: #666;
    padding: 0 10px;
}

.cd-histogram-btn {
    display: block;
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    font-size: 16px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.cd-histogram-btn:hover {
    background-color: #45a049;
}

.error-message {
    color: red;
    text-align: center;
    margin-top: 10px;
    min-height: 20px;
    font-weight: bold;
}

.conditions-display {
    margin: 20px 0;
    padding: 10px;
    background-color: #f5f5f5;
    border-radius: 4px;
    text-align: center;
    line-height: 1.6;
}

.chart-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 100%;
}

.canvas-container {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
}

#density-histogram {
    width: 100% !important;
    height: 100% !important;
}

/* レスポンシブ対応 */
@media screen and (max-width: 480px) {
    #cd-histogram-container {
        padding: 10px;
    }

    .select-container label,
    .rate-select-container label {
        margin-bottom: 8px;
    }

    .select-container,
    .rate-select-container {
        display: flex;
        flex-direction: column;
    }

    .rate-select-group {
        flex-direction: row;
        gap: 8px;
    }
    
    .rate-select {
        width: 100%;
        min-width: 0;
        flex: 1;
    }

    .rate-separator {
        flex: none;
        padding: 0 4px;
    }

    .cd-histogram-btn {
        padding: 8px;
        font-size: 14px;
    }

    .conditions-display {
        font-size: 14px;
        padding: 8px;
        margin: 15px 0;
    }
}