{{-- Rich text + table paste for working paper textareas (Word / Excel / CSV). --}}
@push('stylesheets')
<style>
    .wp-richtext-surface {
        width: 100%;
        border: 0;
        outline: none;
        background: transparent;
        font: inherit;
        color: inherit;
        padding: 0;
        margin: 0;
        min-width: 0;
        min-height: 20px;
        white-space: pre-wrap;
        overflow-wrap: break-word;
        word-break: break-word;
        resize: none;
        overflow: hidden;
        cursor: text;
    }

    .wp-richtext-surface:focus {
        outline: none;
    }

    .wp-richtext-surface[contenteditable="false"] {
        cursor: default;
    }

    .wp-richtext-surface table {
        border-collapse: collapse;
        table-layout: fixed;
        width: 100%;
        max-width: 100%;
        margin: 4px 0;
        font-size: inherit;
    }

    .wp-richtext-surface th,
    .wp-richtext-surface td {
        border: 1px solid #333;
        padding: 2px 5px;
        vertical-align: top;
        text-align: left;
        width: auto;
        overflow-wrap: break-word;
        word-break: break-word;
    }

    .wp-richtext-surface ol {
        margin: 0.25em 0;
        padding-left: 1.4em;
        list-style-type: decimal;
    }

    .wp-richtext-surface ol[style*="lower-roman"],
    .wp-richtext-surface ol[type="i"],
    .wp-richtext-surface ol[type="I"] {
        list-style-type: lower-roman;
    }

    .wp-richtext-surface ol[style*="upper-roman"],
    .wp-richtext-surface ol[type="A"] {
        list-style-type: upper-roman;
    }

    .wp-richtext-surface ol[style*="lower-alpha"],
    .wp-richtext-surface ol[type="a"] {
        list-style-type: lower-alpha;
    }

    .wp-richtext-surface ol[style*="upper-alpha"] {
        list-style-type: upper-alpha;
    }

    .wp-richtext-surface ul {
        margin: 0.25em 0;
        padding-left: 1.4em;
        list-style-type: disc;
    }

    .wp-richtext-surface p {
        margin: 0 0 0.35em;
    }

    .wp-richtext-surface p:last-child {
        margin-bottom: 0;
    }

    .wp-comment-display {
        white-space: normal;
        border: none;
        padding: 0;
        min-height: 0;
        background: transparent;
        overflow: visible;
    }

    .wp-comment-display.wp-richtext-surface[contenteditable="false"],
    .wp-comment-display.wp-richtext-surface {
        cursor: default;
    }

    textarea.wp-richtext-source {
        position: absolute !important;
        width: 1px !important;
        height: 1px !important;
        padding: 0 !important;
        margin: -1px !important;
        overflow: hidden !important;
        clip: rect(0, 0, 0, 0) !important;
        white-space: nowrap !important;
        border: 0 !important;
        opacity: 0 !important;
        pointer-events: none !important;
    }

    .wp-objectives-brief-wrap .wp-richtext-surface {
        padding-right: 132px !important;
    }

    .wp-objectives-brief-title-display,
    .wp-objectives-brief-display {
        white-space: normal;
        min-height: 20px;
    }

    @media screen {
        #wp-form:not([data-wp-form-readonly="1"]) .wp-richtext-surface[contenteditable="true"] {
            background-color: #e8f4fd !important;
            box-shadow: inset 0 0 0 1px #90caf9;
            padding: 2px 4px !important;
            border-radius: 2px;
        }

        #wp-form:not([data-wp-form-readonly="1"]) .wp-richtext-surface[contenteditable="true"]:focus {
            background-color: #d6ebfa !important;
            box-shadow: inset 0 0 0 1px #42a5f5;
        }

        /* Recipients commenting on a read-only WP body still need a usable comment editor. */
        #wp-form[data-wp-form-readonly="1"] .wp-comments-block .wp-richtext-surface[contenteditable="true"],
        #wp-form.wp-document-mode .wp-comments-block .wp-comment-composer .wp-richtext-surface[contenteditable="true"] {
            display: block !important;
            visibility: visible !important;
            background-color: #e8f4fd !important;
            box-shadow: inset 0 0 0 1px #90caf9;
            padding: 2px 4px !important;
            border-radius: 2px;
            min-height: 64px;
            height: auto !important;
            cursor: text;
            pointer-events: auto;
            user-select: text;
        }

        #wp-form[data-wp-form-readonly="1"] .wp-comments-block .wp-richtext-surface[contenteditable="true"]:focus {
            background-color: #d6ebfa !important;
            box-shadow: inset 0 0 0 1px #42a5f5;
        }

        #wp-form .wp-richtext-surface[contenteditable="false"] {
            background-color: #f3f4f6 !important;
            box-shadow: none;
            color: #374151;
        }
    }

    .wp-print-text-surface .wp-richtext-table,
    .prepwp-printcell .wp-richtext-table,
    .pdwpwp-printcell .wp-richtext-table,
    .ddwpwp-printcell .wp-richtext-table {
        border-collapse: collapse;
        table-layout: fixed;
        width: 100%;
        max-width: 100%;
    }

    .wp-print-text-surface .wp-richtext-table th,
    .wp-print-text-surface .wp-richtext-table td,
    .prepwp-printcell .wp-richtext-table th,
    .prepwp-printcell .wp-richtext-table td,
    .pdwpwp-printcell .wp-richtext-table th,
    .pdwpwp-printcell .wp-richtext-table td,
    .ddwpwp-printcell .wp-richtext-table th,
    .ddwpwp-printcell .wp-richtext-table td {
        border: 1px solid #000;
        padding: 2px 4px;
        vertical-align: top;
        width: auto;
        overflow-wrap: break-word;
        word-break: break-word;
    }
</style>
@endpush

@push('scripts')
<script>
(function (w) {
    'use strict';

    var TEXTAREA_SELECTOR = 'textarea.prepwp-textarea, textarea.pdwpwp-textarea, textarea.ddwpwp-textarea';
    var ALLOWED_TAGS = {
        P: true, BR: true, DIV: true, SPAN: true, B: true, STRONG: true, I: true, EM: true, U: true,
        S: true, STRIKE: true, UL: true, OL: true, LI: true, TABLE: true, THEAD: true, TBODY: true,
        TFOOT: true, TR: true, TH: true, TD: true, SUP: true, SUB: true, H1: true, H2: true, H3: true,
        H4: true, H5: true, H6: true, A: true, BLOCKQUOTE: true
    };

    var ALLOWED_STYLE_PROPS = {
        'font-weight': true,
        'font-style': true,
        'text-decoration': true,
        'text-decoration-line': true,
        'list-style-type': true,
        'text-align': true,
        'margin-left': true,
        'padding-left': true,
        'text-indent': true
    };

    function wpRichForm() {
        return document.getElementById('wp-form');
    }

    function wpRichIsExcluded(ta) {
        if (!ta || ta.tagName !== 'TEXTAREA') return true;
        if (ta.classList.contains('d-none') || ta.classList.contains('wp-pc-objectives-source')) return true;
        if (ta.classList.contains('wp-objectives-summernote') || ta.classList.contains('wp-objectives-brief-field')) return true;
        if (ta.classList.contains('pdwpwp-cost-source-input')) return true;
        if (!ta.matches(TEXTAREA_SELECTOR)) return true;
        return false;
    }

    /** Comment fields must stay editable when the WP body is view-only (send-for-comments recipients). */
    function wpRichIsCommentField(ta) {
        if (!ta) return false;
        var id = String(ta.id || '');
        if (id === 'wp-comment-body' || id === 'wp-creator-comment') return true;
        return !!ta.closest('.wp-comments-block');
    }

    function wpRichEscapeHtml(text) {
        return String(text || '')
            .replace(/&/g, '&amp;')
            .replace(/</g, '&lt;')
            .replace(/>/g, '&gt;')
            .replace(/"/g, '&quot;');
    }

    function wpRichPlainToHtml(text) {
        return wpRichEscapeHtml(String(text || '')).replace(/\r\n/g, '\n').replace(/\r/g, '\n').replace(/\n/g, '<br>');
    }

    function wpRichLooksLikeHtml(value) {
        return /<[a-z][\s\S]*>/i.test(String(value || ''));
    }

    function wpRichExtractClipboardHtml(html) {
        var raw = String(html || '');
        var start = raw.indexOf('<!--StartFragment-->');
        var end = raw.indexOf('<!--EndFragment-->');
        if (start !== -1 && end !== -1 && end > start) {
            raw = raw.substring(start + '<!--StartFragment-->'.length, end);
        }
        raw = raw.replace(/<!--\[if[\s\S]*?endif\]-->/gi, '');
        raw = raw.replace(/<!\[if[\s\S]*?endif\]>/gi, '');
        raw = raw.replace(/<!--[\s\S]*?-->/g, '');
        raw = raw.replace(/<\/?[a-z0-9]+:[^>]*>/gi, '');
        return raw;
    }

    function wpRichCleanNodeStyle(node) {
        if (!node || node.nodeType !== 1 || !node.hasAttribute('style')) return;

        var style = node.style;
        var kept = [];
        Object.keys(ALLOWED_STYLE_PROPS).forEach(function (prop) {
            var val = style.getPropertyValue(prop);
            if (val) kept.push(prop + ':' + val);
        });

        var rawStyle = node.getAttribute('style') || '';
        var listMatch = rawStyle.match(/list-style-type\s*:\s*([^;]+)/i);
        if (listMatch && kept.join(';').indexOf('list-style-type') === -1) {
            kept.push('list-style-type:' + listMatch[1].trim());
        }

        node.removeAttribute('style');
        if (kept.length) node.setAttribute('style', kept.join(';'));
    }

    function wpRichStripFontFamily(node) {
        if (!node || node.nodeType !== 1) return;
        if (node.hasAttribute('face')) node.removeAttribute('face');
        if (node.hasAttribute('color')) node.removeAttribute('color');
        if (node.hasAttribute('size')) node.removeAttribute('size');
        wpRichCleanNodeStyle(node);
        if (node.hasAttribute('style')) {
            var styleVal = node.getAttribute('style') || '';
            styleVal = styleVal.replace(/font-family\s*:[^;]+;?/gi, '');
            styleVal = styleVal.replace(/font-size\s*:[^;]+;?/gi, '');
            styleVal = styleVal.replace(/(^|\s)font\s*:[^;]+;?/gi, '$1');
            styleVal = styleVal.replace(/mso-[^:;]+:[^;]+;?/gi, '');
            styleVal = styleVal.replace(/\s*;\s*$/g, '').trim();
            if (!styleVal) node.removeAttribute('style');
            else node.setAttribute('style', styleVal);
        }
        if (node.hasAttribute('class')) {
            var cls = node.getAttribute('class') || '';
            if (/^Mso/i.test(cls.trim()) || cls.indexOf('Mso') !== -1) {
                node.removeAttribute('class');
            }
        }
    }

    function wpRichSanitizeHref(node) {
        if (!node || node.tagName !== 'A') return;
        var href = node.getAttribute('href') || '';
        if (!href || /^\s*javascript:/i.test(href)) {
            node.removeAttribute('href');
            node.removeAttribute('target');
        }
    }

    function wpRichSanitizeHtml(html) {
        if (html === null || html === undefined) return '';
        var raw = wpRichExtractClipboardHtml(html);
        raw = raw.replace(/<\/?(o:p|xml|meta|link|style|script|iframe|object|embed)[^>]*>/gi, '');

        var wrapper = document.createElement('div');
        wrapper.innerHTML = raw;

        function walk(node) {
            if (node.nodeType === 1) {
                var tag = node.tagName;

                if (tag === 'FONT') {
                    var span = document.createElement('span');
                    if (node.getAttribute('color')) {
                        span.setAttribute('data-wp-legacy-color', node.getAttribute('color'));
                    }
                    while (node.firstChild) span.appendChild(node.firstChild);
                    if (node.parentNode) node.parentNode.replaceChild(span, node);
                    walk(span);
                    return;
                }

                if (tag === 'SCRIPT' || tag === 'STYLE' || tag === 'IFRAME' || tag === 'OBJECT' || tag === 'EMBED') {
                    node.remove();
                    return;
                }

                Array.from(node.attributes).forEach(function (attr) {
                    var name = attr.name.toLowerCase();
                    if (name.indexOf('on') === 0 || name === 'srcdoc') {
                        node.removeAttribute(attr.name);
                    }
                });

                wpRichStripFontFamily(node);
                wpRichSanitizeHref(node);

                if (tag === 'TABLE') {
                    node.classList.add('wp-richtext-table');
                    node.removeAttribute('width');
                    node.removeAttribute('height');
                    node.style.tableLayout = 'fixed';
                    node.style.width = '100%';
                }
                if (tag === 'COL' || tag === 'COLGROUP') {
                    node.removeAttribute('width');
                    if (node.hasAttribute('style')) {
                        var colStyle = (node.getAttribute('style') || '').replace(/width\s*:[^;]+;?/gi, '').trim();
                        if (colStyle) node.setAttribute('style', colStyle);
                        else node.removeAttribute('style');
                    }
                }
                if (tag === 'TD' || tag === 'TH') {
                    node.removeAttribute('width');
                    node.removeAttribute('height');
                }

                if (tag === 'SPAN' && node.getAttribute('style') && /mso-list:\s*Ignore/i.test(node.getAttribute('style'))) {
                    node.remove();
                    return;
                }

                if (!ALLOWED_TAGS[tag] && tag !== 'TBODY' && tag !== 'THEAD' && tag !== 'TFOOT') {
                    var parent = node.parentNode;
                    if (parent) {
                        while (node.firstChild) parent.insertBefore(node.firstChild, node);
                        parent.removeChild(node);
                        return;
                    }
                }
            }
            var child = node.firstChild;
            while (child) {
                var next = child.nextSibling;
                walk(child);
                child = next;
            }
        }

        walk(wrapper);
        wpRichConvertWordListParagraphs(wrapper);
        return wrapper.innerHTML;
    }

    function wpRichConvertWordListParagraphs(root) {
        if (!root) return;
        var children = Array.from(root.childNodes);
        var i = 0;

        while (i < children.length) {
            var node = children[i];
            if (node.nodeType !== 1 || node.tagName !== 'P') {
                i++;
                continue;
            }

            var cls = node.getAttribute('class') || '';
            var style = node.getAttribute('style') || '';
            var isList = /MsoListParagraph/i.test(cls) || /mso-list:/i.test(style);
            if (!isList) {
                i++;
                continue;
            }

            var items = [];
            var listType = null;
            var j = i;

            while (j < children.length) {
                var n = children[j];
                if (n.nodeType !== 1 || n.tagName !== 'P') break;
                var c = n.getAttribute('class') || '';
                var s = n.getAttribute('style') || '';
                if (!(/MsoListParagraph/i.test(c) || /mso-list:/i.test(s))) break;

                var rawText = (n.textContent || '').replace(/\u00a0/g, ' ').trim();
                if (!listType) {
                    if (/^\d+[\).\]]/.test(rawText)) listType = 'ol';
                    else if (/^[ivxlcdm]+[\).\]]/i.test(rawText)) listType = 'roman';
                    else if (/^[a-z][\).\]]/i.test(rawText)) listType = 'alpha';
                    else listType = 'ul';
                }

                var text = rawText
                    .replace(/^[\u2022\u00b7\u2022\u00b7•○●◦▪\-–—]\s+/, '')
                    .replace(/^\d+[\).\]]\s+/, '')
                    .replace(/^[ivxlcdm]+[\).\]]\s+/i, '')
                    .replace(/^[a-z][\).\]]\s+/i, '');

                if (text) items.push(text);
                j++;
            }

            if (items.length) {
                var listTag = (listType === 'ul') ? 'ul' : 'ol';
                var list = document.createElement(listTag);
                if (listType === 'roman') list.style.listStyleType = 'lower-roman';
                if (listType === 'alpha') list.style.listStyleType = 'lower-alpha';

                items.forEach(function (txt) {
                    var li = document.createElement('li');
                    li.textContent = txt;
                    list.appendChild(li);
                });

                root.insertBefore(list, children[i]);
                for (var k = i; k < j; k++) {
                    if (children[k] && children[k].parentNode) children[k].remove();
                }
                children = Array.from(root.childNodes);
            }

            i++;
        }
    }

    function wpRichLooksLikeTsvGrid(text) {
        var lines = String(text || '').replace(/\r\n/g, '\n').replace(/\r/g, '\n').split('\n');
        while (lines.length && !lines[lines.length - 1].trim()) lines.pop();
        if (lines.length < 2) return false;

        var tabLines = lines.filter(function (line) { return line.indexOf('\t') !== -1; });
        if (tabLines.length < 2) return false;
        if (tabLines.length < Math.max(2, Math.ceil(lines.length * 0.75))) return false;

        var colCount = tabLines[0].split('\t').length;
        if (colCount < 2) return false;

        return tabLines.every(function (line) { return line.split('\t').length === colCount; });
    }

    function wpRichLooksLikeCsvGrid(text) {
        var lines = String(text || '').replace(/\r\n/g, '\n').replace(/\r/g, '\n').split('\n');
        while (lines.length && !lines[lines.length - 1].trim()) lines.pop();
        if (lines.length < 2) return false;

        var rows = lines.map(function (line) {
            var cells = [];
            var cur = '';
            var inQuotes = false;
            for (var i = 0; i < line.length; i++) {
                var ch = line.charAt(i);
                if (ch === '"') {
                    if (inQuotes && line.charAt(i + 1) === '"') { cur += '"'; i++; }
                    else inQuotes = !inQuotes;
                } else if (ch === ',' && !inQuotes) {
                    cells.push(cur);
                    cur = '';
                } else {
                    cur += ch;
                }
            }
            cells.push(cur);
            return cells;
        });

        if (rows.length < 2) return false;
        var colCount = rows[0].length;
        if (colCount < 2) return false;
        if (!rows.every(function (row) { return row.length === colCount; })) return false;

        // Avoid treating prose paragraphs with commas as CSV
        var avgLen = rows.reduce(function (sum, row) {
            return sum + row.join(' ').length;
        }, 0) / rows.length;
        return avgLen < 120;
    }

    function wpRichHasClipboardHtml(html) {
        return String(html || '').replace(/\s/g, '').length > 0;
    }

    function wpRichApplySanitizedContent(surface, ta) {
        surface.innerHTML = wpRichSanitizeHtml(surface.innerHTML);
        wpRichSyncToTextarea(surface, ta);
        wpRichAutosize(surface, ta);
        ta.dispatchEvent(new Event('input', { bubbles: true }));
        ta.dispatchEvent(new Event('change', { bubbles: true }));
    }

    function wpRichTsvToHtml(text) {
        var lines = String(text || '').replace(/\r\n/g, '\n').replace(/\r/g, '\n').split('\n');
        while (lines.length && lines[lines.length - 1].trim() === '') lines.pop();
        if (lines.length < 1) return '';

        var rows = lines.map(function (line) {
            return line.split('\t');
        });

        var hasTabs = rows.some(function (cells) { return cells.length > 1; });
        if (!hasTabs) return '';

        var html = ['<table class="wp-richtext-table"><tbody>'];
        rows.forEach(function (cells) {
            html.push('<tr>');
            cells.forEach(function (cell) {
                html.push('<td>' + wpRichEscapeHtml(cell) + '</td>');
            });
            html.push('</tr>');
        });
        html.push('</tbody></table>');
        return html.join('');
    }

    function wpRichCsvToHtml(text) {
        var lines = String(text || '').replace(/\r\n/g, '\n').replace(/\r/g, '\n').split('\n');
        while (lines.length && lines[lines.length - 1].trim() === '') lines.pop();
        if (lines.length < 1) return '';

        var rows = lines.map(function (line) {
            var cells = [];
            var cur = '';
            var inQuotes = false;
            for (var i = 0; i < line.length; i++) {
                var ch = line.charAt(i);
                if (ch === '"') {
                    if (inQuotes && line.charAt(i + 1) === '"') {
                        cur += '"';
                        i++;
                    } else {
                        inQuotes = !inQuotes;
                    }
                } else if (ch === ',' && !inQuotes) {
                    cells.push(cur);
                    cur = '';
                } else {
                    cur += ch;
                }
            }
            cells.push(cur);
            return cells;
        });

        if (rows.length < 2 && !(rows[0] && rows[0].length > 1)) return '';

        var html = ['<table class="wp-richtext-table"><tbody>'];
        rows.forEach(function (cells) {
            html.push('<tr>');
            cells.forEach(function (cell) {
                html.push('<td>' + wpRichEscapeHtml(cell.trim()) + '</td>');
            });
            html.push('</tr>');
        });
        html.push('</tbody></table>');
        return html.join('');
    }

    function wpRichSetSurfaceContent(surface, value) {
        var val = String(value || '');
        if (wpRichLooksLikeHtml(val)) {
            surface.innerHTML = wpRichSanitizeHtml(val);
        } else {
            surface.innerHTML = wpRichPlainToHtml(val);
        }
    }

    function wpRichSyncToTextarea(surface, ta) {
        if (!surface || !ta) return;
        var html = wpRichSanitizeHtml(surface.innerHTML);
        if (html === '<br>' || html === '<div><br></div>') html = '';
        ta.value = html;
    }

    function wpRichIsNoAutosize(ta) {
        return ta.classList.contains('prepwp-noautosize')
            || ta.classList.contains('pdwpwp-noautosize')
            || ta.classList.contains('ddwpwp-noautosize');
    }

    function wpRichClamp(n, min, max) {
        return Math.max(min, Math.min(max, n));
    }

    function wpRichAutosize(surface, ta) {
        if (!surface || surface.getAttribute('contenteditable') === 'false') return;
        if (ta && wpRichIsNoAutosize(ta)) {
            wpRichSizeScrollCell(surface, ta);
            return;
        }
        surface.style.height = 'auto';
        surface.style.height = (surface.scrollHeight + 2) + 'px';
    }

    function wpRichSizeScrollCell(surface, ta) {
        var cell = ta.closest('.prepwp-scrollcell, .pdwpwp-scrollcell, .ddwpwp-scrollcell');
        if (!cell || !surface) return;

        var viewportCap = Math.floor(window.innerHeight * 0.33);
        var maxCap = wpRichClamp(viewportCap, 140, 260);
        var minCap = 110;

        surface.style.height = 'auto';
        surface.style.minHeight = '0';
        var contentH = Math.max(surface.scrollHeight + 2, 1);
        var cellH = wpRichClamp(contentH, minCap, maxCap);
        var scrollable = contentH > cellH;

        cell.style.height = cellH + 'px';
        cell.style.maxHeight = maxCap + 'px';
        cell.style.overflowY = scrollable ? 'auto' : 'hidden';
        cell.classList.toggle('is-scrollable', scrollable);

        surface.style.height = contentH + 'px';
        surface.style.overflow = 'hidden';
        ta.style.height = contentH + 'px';
        ta.style.overflow = 'hidden';
    }

    function wpRichWireScrollWheel(surface, ta) {
        if (!wpRichIsNoAutosize(ta)) return;
        if (surface.dataset && surface.dataset.wpRbmWheelWired === '1') return;
        if (surface.dataset) surface.dataset.wpRbmWheelWired = '1';

        surface.addEventListener('wheel', function (e) {
            var cell = surface.closest('.prepwp-scrollcell, .pdwpwp-scrollcell, .ddwpwp-scrollcell');
            if (!cell) return;
            var canScroll = cell.scrollHeight > cell.clientHeight + 1;
            if (!canScroll) return;
            e.preventDefault();
            cell.scrollTop += e.deltaY;
        }, { passive: false });
    }

    function wpRichInsertHtml(surface, html) {
        surface.focus();
        var safe = wpRichSanitizeHtml(html);
        if (document.queryCommandSupported && document.queryCommandSupported('insertHTML')) {
            document.execCommand('insertHTML', false, safe);
        } else {
            surface.innerHTML += safe;
        }
    }

    function wpRichHandlePaste(e, surface, ta) {
        if (surface.getAttribute('contenteditable') === 'false') return;

        var clipboard = (e.clipboardData || window.clipboardData);
        if (!clipboard) return;

        var html = clipboard.getData('text/html') || '';
        var text = clipboard.getData('text/plain') || '';

        if (!html && !text) return;

        // Plain spreadsheet grids only when clipboard has no HTML (Excel/CSV copy).
        if (!wpRichHasClipboardHtml(html) && text && wpRichLooksLikeTsvGrid(text)) {
            e.preventDefault();
            wpRichInsertHtml(surface, wpRichTsvToHtml(text));
            wpRichSyncToTextarea(surface, ta);
            wpRichAutosize(surface, ta);
            ta.dispatchEvent(new Event('input', { bubbles: true }));
            ta.dispatchEvent(new Event('change', { bubbles: true }));
            return;
        }

        if (!wpRichHasClipboardHtml(html) && text && wpRichLooksLikeCsvGrid(text)) {
            e.preventDefault();
            wpRichInsertHtml(surface, wpRichCsvToHtml(text));
            wpRichSyncToTextarea(surface, ta);
            wpRichAutosize(surface, ta);
            ta.dispatchEvent(new Event('input', { bubbles: true }));
            ta.dispatchEvent(new Event('change', { bubbles: true }));
            return;
        }

        // Word / rich HTML: insert sanitized HTML (avoid broken native Word paste).
        if (wpRichHasClipboardHtml(html)) {
            e.preventDefault();
            wpRichInsertHtml(surface, wpRichExtractClipboardHtml(html));
            wpRichApplySanitizedContent(surface, ta);
            return;
        }

        // Plain text only
        e.preventDefault();
        wpRichInsertHtml(surface, wpRichPlainToHtml(text));
        wpRichSyncToTextarea(surface, ta);
        wpRichAutosize(surface, ta);
        ta.dispatchEvent(new Event('input', { bubbles: true }));
        ta.dispatchEvent(new Event('change', { bubbles: true }));
    }

    function wpRichHandleFileDrop(e, surface, ta) {
        if (surface.getAttribute('contenteditable') === 'false') return;
        var files = e.dataTransfer && e.dataTransfer.files;
        if (!files || !files.length) return;

        var file = files[0];
        var name = String(file.name || '').toLowerCase();
        if (!/\.(csv|tsv|txt)$/.test(name)) return;

        e.preventDefault();
        e.stopPropagation();

        var reader = new FileReader();
        reader.onload = function () {
            var content = String(reader.result || '');
            var tableHtml = name.endsWith('.tsv') || content.indexOf('\t') !== -1
                ? wpRichTsvToHtml(content)
                : wpRichCsvToHtml(content);
            if (!tableHtml && content.trim()) {
                tableHtml = wpRichPlainToHtml(content);
            }
            if (tableHtml) {
                wpRichInsertHtml(surface, tableHtml);
                wpRichSyncToTextarea(surface, ta);
                wpRichAutosize(surface, ta);
                ta.dispatchEvent(new Event('input', { bubbles: true }));
            }
        };
        reader.readAsText(file);
    }

    function wpRichGetSurfaceForTextarea(ta) {
        if (!ta || !ta.previousElementSibling) return null;
        var prev = ta.previousElementSibling;
        return prev.classList && prev.classList.contains('wp-richtext-surface') ? prev : null;
    }

    function wpRichInitTextarea(ta, forceReinit) {
        if (wpRichIsExcluded(ta)) return;

        var form = wpRichForm();
        var readOnlyForm = form && form.getAttribute('data-wp-form-readonly') === '1';
        var editable = (!readOnlyForm || wpRichIsCommentField(ta)) && !ta.readOnly && !ta.disabled;

        var existing = wpRichGetSurfaceForTextarea(ta);
        if (existing && !forceReinit && ta.dataset.wpRichtext === '1') {
            return existing;
        }
        if (existing) existing.remove();

        var surface = document.createElement('div');
        surface.className = 'wp-richtext-surface';
        if (wpRichIsCommentField(ta)) {
            surface.classList.add('wp-comment-composer-surface');
        }
        surface.setAttribute('role', 'textbox');
        surface.setAttribute('aria-multiline', 'true');
        surface.setAttribute('contenteditable', editable ? 'true' : 'false');
        surface.setAttribute('tabindex', editable ? '0' : '-1');

        ta.parentNode.insertBefore(surface, ta);
        ta.classList.add('wp-richtext-source');
        ta.dataset.wpRichtext = '1';

        wpRichSetSurfaceContent(surface, ta.value);
        wpRichAutosize(surface, ta);
        wpRichWireScrollWheel(surface, ta);

        if (editable) {
            surface.addEventListener('input', function () {
                wpRichSyncToTextarea(surface, ta);
                wpRichAutosize(surface, ta);
                ta.dispatchEvent(new Event('input', { bubbles: true }));
            });

            surface.addEventListener('paste', function (e) {
                wpRichHandlePaste(e, surface, ta);
            });

            surface.addEventListener('dragover', function (e) {
                e.preventDefault();
            });

            surface.addEventListener('drop', function (e) {
                wpRichHandleFileDrop(e, surface, ta);
            });

            surface.addEventListener('blur', function () {
                var html = wpRichSanitizeHtml(surface.innerHTML);
                if (html === '<br>' || html === '<div><br></div>') html = '';
                surface.innerHTML = html;
                ta.value = html;
            });
        }

        return surface;
    }

    function wpRichInitAll(root) {
        var scope = root || wpRichForm();
        if (!scope) return;
        scope.querySelectorAll(TEXTAREA_SELECTOR).forEach(function (ta) {
            wpRichInitTextarea(ta, false);
        });
    }

    function wpRichInitContainer(node) {
        if (!node || node.nodeType !== 1) return;
        node.querySelectorAll(TEXTAREA_SELECTOR).forEach(function (ta) {
            wpRichInitTextarea(ta, true);
        });
    }

    function wpRichSyncAll(root) {
        var scope = root || wpRichForm();
        if (!scope) return;
        scope.querySelectorAll('textarea.wp-richtext-source').forEach(function (ta) {
            var surface = wpRichGetSurfaceForTextarea(ta);
            if (surface) wpRichSyncToTextarea(surface, ta);
        });
    }

    function wpRichSyncFromTextarea(ta) {
        if (!ta) return;
        var surface = wpRichGetSurfaceForTextarea(ta);
        if (!surface) {
            wpRichInitTextarea(ta, false);
            surface = wpRichGetSurfaceForTextarea(ta);
        }
        if (surface) {
            wpRichSetSurfaceContent(surface, ta.value);
            wpRichAutosize(surface, ta);
        }
    }

    function wpRichGetPrintHtml(ta) {
        var surface = wpRichGetSurfaceForTextarea(ta);
        if (surface) {
            return wpRichSanitizeHtml(surface.innerHTML);
        }
        var val = ta.value || '';
        if (wpRichLooksLikeHtml(val)) return wpRichSanitizeHtml(val);
        return wpRichPlainToHtml(val);
    }

    function wpRichHasHtmlContent(html) {
        return wpRichLooksLikeHtml(html) || /<table/i.test(html);
    }

    w.wpRichText = {
        initAll: wpRichInitAll,
        initContainer: wpRichInitContainer,
        syncAll: wpRichSyncAll,
        syncFromTextarea: wpRichSyncFromTextarea,
        getPrintHtml: wpRichGetPrintHtml,
        hasHtmlContent: wpRichHasHtmlContent,
        sanitizeHtml: wpRichSanitizeHtml,
        plainToHtml: wpRichPlainToHtml
    };

    document.addEventListener('DOMContentLoaded', function () {
        wpRichInitAll();

        var commentForm = document.getElementById('wp-add-comment-form');
        if (commentForm) {
            commentForm.addEventListener('submit', function () {
                var wpForm = wpRichForm();
                if (wpForm && w.wpRichText && typeof w.wpRichText.syncAll === 'function') {
                    w.wpRichText.syncAll(wpForm);
                }
            });
        }

        var form = wpRichForm();
        if (!form || typeof MutationObserver === 'undefined') return;

        var observer = new MutationObserver(function (mutations) {
            mutations.forEach(function (mutation) {
                mutation.addedNodes.forEach(function (node) {
                    if (node.nodeType !== 1) return;
                    if (node.matches && node.matches(TEXTAREA_SELECTOR)) {
                        wpRichInitTextarea(node, true);
                    }
                    wpRichInitContainer(node);
                });
            });
        });

        observer.observe(form, { childList: true, subtree: true });
    });
})(window);
</script>
@endpush