.gdl-container {
    max-width: 800px;
    margin: 30px auto;
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.gdl-container h2 {
    color: #333;
    margin-bottom: 20px;
    text-align: center;
}

.gdl-checkbox-item {
    margin: 15px 0;
    padding: 10px;
    background: #f9f9f9;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.gdl-checkbox-item:hover {
    background: #f0f0f0;
}

.gdl-checkbox-item input[type="checkbox"] {
    margin-right: 10px;
}

.gdl-checkbox-item label {
    cursor: pointer;
    font-size: 16px;
    color: #444;
}

.gdl-submit-button {
    display: block;
    width: 100%;
    max-width: 300px;
    margin: 30px auto 0;
    padding: 12px 20px;
    background: #0073aa;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    text-align: center;
    transition: background-color 0.2s;
}

.gdl-submit-button:hover {
    background: #005177;
}

.gdl-submit-button:disabled {
    background: #ccc;
    cursor: not-allowed;
}