function enablePasteUpload(inputSelector, previewSelector) {
    var input = document.querySelector(inputSelector);
    if (!input) return;

    document.addEventListener('paste', function (e) {
        var clipboard = e.clipboardData || window.clipboardData;
        var items = clipboard ? clipboard.items : null;
        if (!items) return;

        for (var i = 0; i < items.length; i++) {
            var item = items[i];
            if (item.kind === 'file' && item.type.indexOf('image/') === 0) {
                var blob = item.getAsFile();
                if (!blob) continue;

                var ext = (blob.type.split('/')[1] || 'png').toLowerCase();
                var pastedFile = new File([blob], 'pasted-image-' + Date.now() + '.' + ext, { type: blob.type });

                var dt = new DataTransfer();
                dt.items.add(pastedFile);
                input.files = dt.files;
                input.dispatchEvent(new Event('change', { bubbles: true }));

                if (previewSelector) {
                    var preview = document.querySelector(previewSelector);
                    if (preview) {
                        preview.src = URL.createObjectURL(pastedFile);
                        preview.style.display = '';
                    }
                }

                e.preventDefault();
                break;
            }
        }
    });
}