.drop-zone {
    border: 2px dashed #ccc;
    padding: 50px;
    text-align: center;
    transition: border 0.3s;
    cursor: pointer;
}
.drop-zone.dragover {
    border-color: #007bff;
    background: #f8f9fa;
}
.progress-container {
    width: 100%;
    height: 20px;
    background: #e0e0e0;
    border-radius: 10px;
    overflow: hidden;
    margin: 20px 0;
}
.progress-bar {
    height: 100%;
    background: #007bff;
    width: 0%;
    transition: width 0.3s;
}
#status {
    margin-top: 10px;
    font-weight: bold;
}