/* Upload zone */
.js-upload-container {
    transition: all 0.3s ease;
    position: relative;
    min-height: 300px;
}

.js-upload-container:empty {
    background-color: #fff;
}

.js-upload-container:empty:hover {
    background-color: #f0f7ff;
}

/* Drag and drop highlight */
.js-upload-container.bg-blue-50 {
    background-color: #f0f7ff !important;
}

/* Responsive adjustments */
@media (max-width: 640px) {
    .js-upload-container {
        min-height: 200px;
    }
}