body {
    padding: 20px;
    margin: 0;
}

.step {
    display: none;
}

.postcard-preview {
    background-color: #ffffff;
    border:1px solid #d8dde6;
    padding:10px;
    height: 330px;
    width:580px;
    overflow: scroll;
}

/* Estado inicial: oculto */
.qr-hidden {
    display: none;  
    max-height: 0;
    opacity: 0;
    transition: max-height 0.3s ease-in-out, opacity 0.3s ease-in-out;
}

.qr-visible {
    display: block;
    max-height: 300px;
    opacity: 1;
}

#qr-options {
    width: 50%; 
    max-width: 500px; 
    padding: 16px;
    border: 1px solid #d3d3d3;
    background: white;
    position: fixed; 
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    z-index: 1000; 
    border-radius: 8px; 
}

#preview-aside {
    position: relative
}

.slds-file-custom::-webkit-file-upload-button {
    visibility: hidden;
}

.slds-file-custom {
    padding: 0.5em;
}

.slds-file-custom::before {
    content: 'Choose File';
    display: inline-block;
    background: #0176d3; 
    color: white;
    border: 1px solid #0176d3;
    border-radius: 0.25rem;
    padding: 0.1rem 0.5rem; 
    outline: none;
    white-space: nowrap;
    cursor: pointer;
    font-size: 0.75rem; 
}

.slds-file-custom:hover::before {
    background: #014486;
    border-color: #014486;
}

.slds-file-custom:active::before {
    background: #012e5a;
    border-color: #012e5a;
}