.hsc-container {
    max-width: 800px;
    margin: 2em auto;
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

#input-text {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    resize: vertical;
    font-family: Arial, sans-serif;
    min-height: 200px;
    margin-bottom: 15px;
}

.hsc-button {
    background: #0073aa;
    color: white;
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background 0.3s ease;
}

.hsc-button:hover {
    background: #005177;
}

.hsc-button:disabled {
    background: #cccccc;
    cursor: not-allowed;
}

#hsc-loading {
    text-align: center;
    padding: 20px;
    margin: 20px 0;
    font-style: italic;
    color: #666;
    background: #f5f5f5;
    border-radius: 4px;
}

#hsc-result {
    margin-top: 20px;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 4px;
    background: #f9f9f9;
}

.converted-text {
    white-space: pre-wrap;
    line-height: 1.6;
    padding: 15px;
    background: #ffffff;
    border: 1px solid #eee;
    border-radius: 4px;
}

.error {
    color: #dc3232;
    padding: 15px;
    border: 1px solid #dc3232;
    border-radius: 4px;
    margin-top: 15px;
    background: #fff8f8;
}