body {
    font-family: Arial, sans-serif;
    background: #fff;
    color: #333;
    margin: 0;
    padding: 0;
}
header {
    background: #f8f8f8;
    padding: 20px;
    text-align: center;
}
header img {
    max-width: 250px;
    height: auto;
}
main {
    max-width: 800px;
    margin: auto;
    padding: 20px;
}
footer {
    text-align: center;
    padding: 20px;
    background: #f1f1f1;
    font-size: 0.9em;
    color: #666;
}
#dropZone {
    border: 2px dashed #aaa;
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    color: #555;
    margin-bottom: 1em;
    cursor: pointer;
}
#dropZone.hover {
    background-color: #f0f0f0;
    border-color: #333;
}
#previewArea img {
    max-width: 100%;
    border: 1px solid #ccc;
    border-radius: 4px;
}