body {
    font-family: Arial, sans-serif;
    text-align: center;
    padding: 20px;
    background-color: #f4f4f4;
}
.container {
    max-width: 800px;
    margin: 0 auto;
}
.logo {
    max-width: 200px;
    margin-bottom: 20px;
}
.drop-zone {
    border: 2px dashed #ccc;
    padding: 20px;
    background: #fff;
    cursor: pointer;
    margin-bottom: 20px;
}
.drop-zone.dragover {
    background: #e1f5fe;
    border-color: #2196f3;
}
.options {
    margin-bottom: 20px;
}
.options label, .options select, .options input {
    margin: 0 10px;
}
button {
    padding: 10px 20px;
    background: #2196f3;
    color: white;
    border: none;
    cursor: pointer;
    border-radius: 5px;
}
button:hover {
    background: #1976d2;
}
#preview img {
    max-width: 200px;
    margin: 10px;
}
#message {
    color: #d32f2f;
}
.ad-container {
    margin-top: 20px;
    padding: 10px;
    text-align: center;
}