#idc-checkout-form-wrapper {
    max-width: 600px;
    border: 1px solid #ddd;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 5px;
}
.idc-field-group {
    margin-bottom: 15px;
}
.idc-field-group label {
    display: block;
    font-weight: bold;
    margin-bottom: 5px;
}
.idc-field-group select,
.idc-field-group input[type="number"],
.idc-field-group input[type="text"] {
    width: 100%;
    padding: 8px;
    box-sizing: border-box;
}
#idc-participants-wrapper {
    border: 1px solid #eee;
    padding: 15px;
    margin-top: 15px;
    background: #fff;
}
#idc-add-new-user-btn {
    margin-top: 10px;
}
#idc-response {
    margin-top: 20px;
    padding: 15px;
    border-radius: 4px;
    display: none;
}
#idc-response.success {
    background-color: #d4edda;
    border-color: #c3e6cb;
    color: #155724;
    display: block;
}
#idc-response.error {
    background-color: #f8d7da;
    border-color: #f5c6cb;
    color: #721c24;
    display: block;
}

/* Modal Styles */
#idc-add-user-modal {
    position: fixed;
    z-index: 1000;
    left: 0; top: 0;
    width: 100%; height: 100%;
    background-color: rgba(0,0,0,0.5);
    display: none; /* Initially hidden */
    justify-content: center;
    align-items: center;
}
#idc-add-user-modal.show {
    display: flex !important; /* Show with flexbox for centering */
}
.idc-modal-content {
    background: #fff;
    padding: 20px 30px;
    border-radius: 5px;
    width: 90%;
    max-width: 400px;
    position: relative;
}   
.idc-close-modal {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 24px;
    font-weight: bold;
    cursor: pointer;
}
#idc-new-user-response { margin-top: 10px; }
#idc-new-user-form label{width:100%}