From 3b660bf27eecb4bdb041fd62d622912e02c58711 Mon Sep 17 00:00:00 2001
From: David Arranz <darranz@rodax-software.com>
Date: Mon, 19 Oct 2026 16:56:37 +0200
Subject: [PATCH] feat: enhance chapter and detail row interactions with
 improved animations and visibility controls

- Adjusted drag handle alignment in QuoteChaptersDataTable for consistent width and positioning.
- Implemented height and opacity transitions in useChapterCollapse for smoother chapter collapsing.
- Updated QuoteItemsSortableTableRow to identify active rows with data attributes and apply consistent styling.
- Refined detail row selection to limit checkboxes to detail rows only, improving user experience.
- Enhanced visibility of controls on hover and focus for both chapter titles and detail rows.
- Improved spacing and alignment for chapter titles and associated controls, ensuring a cohesive layout.
- Added tests to validate new behaviors and interactions, ensuring functionality remains intact.
---
 .../components/QuoteChaptersDataTable.tsx     | 339 +++++++++---------
 .../QuoteItemsSortableDragHandleCell.tsx      |   2 +
 .../components/QuoteItemsSortableTableRow.tsx |   3 +-
 .../editors/QuoteChapterEditor.test.tsx       |  37 +-
 .../editors/QuoteDetailsCardEditor.tsx        | 127 ++++---
 .../app/quotes/hooks/useChapterCollapse.ts    |  23 +-
 .../src/app/quotes/hooks/useDetailColumns.tsx |   2 +-
 doc/capitulos-cotizaciones.md                 |  44 +++
 8 files changed, 332 insertions(+), 245 deletions(-)

diff --git a/client/src/app/quotes/components/QuoteChaptersDataTable.tsx b/client/src/app/quotes/components/QuoteChaptersDataTable.tsx
index 4c8f298..42102fa 100644
--- a/client/src/app/quotes/components/QuoteChaptersDataTable.tsx
+++ b/client/src/app/quotes/components/QuoteChaptersDataTable.tsx
@@ -11,13 +11,13 @@ import {
   DialogFooter,
   DialogHeader,
   DialogTitle,
-  Label,
   Empty,
+  EmptyContent,
+  EmptyDescription,
   EmptyHeader,
   EmptyMedia,
   EmptyTitle,
-  EmptyDescription,
-  EmptyContent,
+  Label,
   Select,
   SelectContent,
   SelectItem,
@@ -29,12 +29,12 @@ import {
 import { Table, TableBody, TableCell, TableHead, TableRow } from "@/ui/table";
 import {
   DndContext,
-  closestCenter,
-  pointerWithin,
   DragEndEvent,
   KeyboardCoordinateGetter,
   KeyboardSensor,
   PointerSensor,
+  closestCenter,
+  pointerWithin,
   useDroppable,
   useSensor,
   useSensors,
@@ -48,37 +48,31 @@ import {
   getCoreRowModel,
   useReactTable,
 } from "@tanstack/react-table";
-import {
-  CopyIcon,
-  FolderIcon,
-  FolderOpenIcon,
-  GripVerticalIcon,
-  Trash2Icon,
-} from "lucide-react";
+import { CopyIcon, FolderIcon, FolderOpenIcon, GripVerticalIcon, Trash2Icon } from "lucide-react";
 import { Fragment, ReactNode, useMemo, useState } from "react";
 import { Controller, useFormContext } from "react-hook-form";
 import { useTranslation } from "react-i18next";
 import {
-  chapterSubtotal,
-  duplicateChapterSelection,
   EditorChapter,
   EditorItem,
+  chapterSubtotal,
+  duplicateChapterSelection,
   insertChapterItem,
   moveChapterItems,
   moveChapters,
   removeChapterSelection,
   ungroupChapters,
 } from "../chapterEditor";
-import { ChapterEditorController } from "../hooks/useChapterEditor";
 import { useChapterCollapse } from "../hooks/useChapterCollapse";
+import { ChapterEditorController } from "../hooks/useChapterEditor";
 import { QuoteItemsInlineRowActions } from "./QuoteItemsInlineRowActions";
+import { RowIdData } from "./QuoteItemsSortableDataTable";
 import { QuoteItemsSortableDataTableToolbar } from "./QuoteItemsSortableDataTableToolbar";
 import { QuoteItemsSortableTableRow } from "./QuoteItemsSortableTableRow";
-import { RowIdData } from "./QuoteItemsSortableDataTable";
 
-import { AppendEmptyRowButton } from "./AppendEmptyRowButton";
-import { AppendCatalogArticleRowButton } from "./AppendCatalogArticleRowButton";
 import { AppendBlockRowButton } from "./AppendBlockRowButton";
+import { AppendCatalogArticleRowButton } from "./AppendCatalogArticleRowButton";
+import { AppendEmptyRowButton } from "./AppendEmptyRowButton";
 
 type Selection = { chapters: string[]; indexes: number[] };
 const isChapter = (id: string | number) => String(id).startsWith("chapter:");
@@ -110,7 +104,11 @@ const keyboardCoordinates: KeyboardCoordinateGetter = (
 };
 
 function ChapterContent({ children }: { children: ReactNode }) {
-  return <div data-chapter-content className='min-w-0'>{children}</div>;
+  return (
+    <div data-chapter-content className='min-w-0'>
+      {children}
+    </div>
+  );
 }
 
 // Reserve the expand column in detail rows so all controls stay aligned.
@@ -118,7 +116,15 @@ function ChapterSpacerCell() {
   return <TableCell className='p-0' data-chapter-column='chapter_tree' />;
 }
 
-function EmptyChapterTarget({ id, columns, hidden, collapsed, onAddRow, onAddArticle, onAddBlock }: {
+function EmptyChapterTarget({
+  id,
+  columns,
+  hidden,
+  collapsed,
+  onAddRow,
+  onAddArticle,
+  onAddBlock,
+}: {
   id: string;
   columns: number;
   hidden: boolean;
@@ -147,7 +153,7 @@ function EmptyChapterTarget({ id, columns, hidden, collapsed, onAddRow, onAddArt
               <EmptyTitle>{t("quotes.chapters.empty_title")}</EmptyTitle>
               <EmptyDescription>{t("quotes.chapters.empty")}</EmptyDescription>
             </EmptyHeader>
-            <EmptyContent className='max-w-none flex-row flex-wrap justify-center gap-2'>
+            <EmptyContent className='flex-row flex-wrap justify-center gap-2 max-w-none'>
               <AppendEmptyRowButton size='sm' onClick={onAddRow} />
               <AppendCatalogArticleRowButton size='sm' onClick={onAddArticle} />
               <AppendBlockRowButton size='sm' onClick={onAddBlock} />
@@ -164,24 +170,18 @@ function ChapterGroup({
   index,
   columns,
   children,
-  selected,
-  onSelect,
   onActivate,
   onDuplicate,
   onRemove,
-  mixed,
   subtotal,
 }: {
   chapter: EditorChapter;
   index: number;
   columns: number;
   children: (collapsed: boolean, hidden: boolean) => ReactNode;
-  selected: boolean;
-  onSelect: (selected: boolean) => void;
   onActivate: () => void;
   onDuplicate: () => void;
   onRemove: () => void;
-  mixed: boolean;
   subtotal: string;
 }) {
   const { t } = useTranslation();
@@ -195,14 +195,23 @@ function ChapterGroup({
     transform,
     transition,
     isDragging,
-  } = useSortable({ id: `chapter:${chapter.id}`, disabled: mixed });
+  } = useSortable({ id: `chapter:${chapter.id}` });
   return (
     <TableBody
       ref={(node) => {
         setNodeRef(node);
         ref.current = node;
       }}
-      className='bg-background [&>tr:not([data-chapter-gap])>td]:border-b [&>tr:not([data-chapter-gap])>td]:border-b-border'
+      className={`bg-background
+        [&>tr:not([data-chapter-gap]):not([data-active-item])>td]:border-b
+        [&>tr:not([data-chapter-gap]):not([data-active-item])>td]:border-b-border
+        [&>tr[data-active-item]>td]:border-destructive/30
+        [&>tr[data-active-item]>td:first-child]:border-l-4
+        [&>tr[data-active-item]>td:first-child]:border-l-destructive
+        [&>tr[data-active-item]>td:last-child]:border-r
+        [&>tr[data-active-item=detail]>td]:border-t
+        [&>tr[data-active-item=detail]>td]:border-b-0
+        [&>tr[data-active-item=actions]>td]:border-b`}
       style={{
         transform: CSS.Translate.toString(transform),
         transition,
@@ -215,16 +224,16 @@ function ChapterGroup({
         </TableRow>
       )}
       <TableRow
-        className='bg-muted hover:bg-muted [&>td]:border-t [&>td]:py-3 [&>td:first-child]:rounded-tl-md [&>td:last-child]:rounded-tr-md'
+        className='group/chapter bg-muted hover:bg-muted [&>td]:border-t [&>td]:py-3 [&>td:first-child]:rounded-tl-md [&>td:last-child]:rounded-tr-md'
         data-chapter-id={chapter.id}
       >
-        <TableCell className='px-1'>
-          <div className='relative h-8 w-8'>
+        <TableCell className='pl-3.5 pr-1'>
+          <div className='relative w-8 h-8'>
             <Button
               type='button'
               variant='ghost'
               size='icon'
-              className='h-8 w-8 text-muted-foreground'
+              className='w-8 h-8 text-muted-foreground'
               aria-expanded={!collapsed}
               aria-label={t(collapsed ? "quotes.chapters.expand" : "quotes.chapters.collapse", {
                 number: index + 1,
@@ -235,9 +244,9 @@ function ChapterGroup({
               }}
             >
               {collapsed ? (
-                <FolderIcon className='h-5 w-5' aria-hidden='true' />
+                <FolderIcon className='w-5 h-5' aria-hidden='true' />
               ) : (
-                <FolderOpenIcon className='h-5 w-5' aria-hidden='true' />
+                <FolderOpenIcon className='w-5 h-5' aria-hidden='true' />
               )}
             </Button>
             <Badge
@@ -249,30 +258,7 @@ function ChapterGroup({
             </Badge>
           </div>
         </TableCell>
-        <TableCell className='px-2'>
-          <Button
-            type='button'
-            variant='ghost'
-            size='icon'
-            disabled={mixed}
-            ref={setActivatorNodeRef}
-            {...attributes}
-            {...listeners}
-            className='h-8 w-4 touch-none cursor-grab'
-            onFocus={onActivate}
-            aria-label={t("quotes.chapters.move", { number: index + 1 })}
-          >
-            <GripVerticalIcon className='h-4 w-4' />
-          </Button>
-        </TableCell>
-        <TableCell className='px-2'>
-          <Checkbox
-            checked={selected}
-            onCheckedChange={(value) => onSelect(Boolean(value))}
-            aria-label={t("quotes.chapters.select", { number: index + 1 })}
-          />
-        </TableCell>
-        <TableCell colSpan={columns - 3} className='px-2'>
+        <TableCell colSpan={columns - 1} className='px-2'>
           <div className='flex items-start gap-2'>
             <Controller
               key={`${chapter.id}:${index}`}
@@ -283,7 +269,7 @@ function ChapterGroup({
                   Boolean(value?.trim()) || t("quotes.chapters.title_required"),
               }}
               render={({ field, fieldState }) => (
-                <div className='min-w-0 flex-1'>
+                <div className='-ml-px flex-1 min-w-0'>
                   <Textarea
                     {...field}
                     value={field.value ?? ""}
@@ -291,7 +277,7 @@ function ChapterGroup({
                     onFocus={onActivate}
                     aria-label={t("quotes.chapters.title", { number: index + 1 })}
                     aria-invalid={Boolean(fieldState.error)}
-                    className='min-h-10 border-transparent bg-transparent font-semibold shadow-none hover:border-input hover:bg-background focus-visible:border-input focus-visible:bg-background'
+                    className='px-0 font-semibold bg-transparent border-transparent shadow-none min-h-10 hover:border-input hover:bg-background focus-visible:border-input focus-visible:bg-background'
                   />
                   {fieldState.error && (
                     <p role='alert' className='text-sm text-destructive'>
@@ -301,23 +287,38 @@ function ChapterGroup({
                 </div>
               )}
             />
+            <Button
+              type='button'
+              variant='ghost'
+              size='icon'
+              ref={setActivatorNodeRef}
+              {...attributes}
+              {...listeners}
+              className='w-10 h-10 shrink-0 touch-none cursor-grab opacity-0 transition-opacity group-hover/chapter:opacity-100 focus-visible:opacity-100 motion-reduce:transition-none [@media(hover:none)]:opacity-100'
+              onFocus={onActivate}
+              aria-label={t("quotes.chapters.move", { number: index + 1 })}
+            >
+              <GripVerticalIcon className='w-4 h-4' />
+            </Button>
             <Button
               type='button'
               variant='ghost'
               size='icon'
               onClick={onDuplicate}
+              className='opacity-0 transition-opacity group-hover/chapter:opacity-100 focus-visible:opacity-100 motion-reduce:transition-none [@media(hover:none)]:opacity-100'
               aria-label={t("quotes.chapters.duplicate", { number: index + 1 })}
             >
-              <CopyIcon className='h-4 w-4' />
+              <CopyIcon className='w-4 h-4' />
             </Button>
             <Button
               type='button'
               variant='ghost'
               size='icon'
               onClick={onRemove}
+              className='opacity-0 transition-opacity group-hover/chapter:opacity-100 focus-visible:opacity-100 motion-reduce:transition-none [@media(hover:none)]:opacity-100'
               aria-label={t("quotes.chapters.remove", { number: index + 1 })}
             >
-              <Trash2Icon className='h-4 w-4' />
+              <Trash2Icon className='w-4 h-4' />
             </Button>
           </div>
         </TableCell>
@@ -331,7 +332,7 @@ function ChapterGroup({
         <TableCell colSpan={columns - 2} className='pl-4 text-sm text-muted-foreground'>
           {t("quotes.chapters.subtotal", { number: index + 1, description: chapter.description })}
         </TableCell>
-        <TableCell className='whitespace-nowrap text-right text-base'>{subtotal}</TableCell>
+        <TableCell className='text-base text-right whitespace-nowrap'>{subtotal}</TableCell>
       </TableRow>
     </TableBody>
   );
@@ -365,19 +366,14 @@ export function QuoteChaptersDataTable({
   const { t } = useTranslation();
   const { watch, setValue } = useFormContext();
   const [rowSelection, setRowSelection] = useState<RowSelectionState>({});
-  const [chapterSelection, setChapterSelection] = useState<string[]>([]);
   const [activeRow, setActiveRow] = useState<string | null>(null);
   const [deleting, setDeleting] = useState<Selection | null>(null);
   const [ungrouping, setUngrouping] = useState(false);
   const [targetId, setTargetId] = useState("");
   const { chapters, items } = controller;
   const selectedIndexes = data.flatMap((row, index) => (rowSelection[row.id] ? [index] : []));
-  const mixed =
-    chapterSelection.length > 0 &&
-    selectedIndexes.some((index) => !chapterSelection.includes(items[index]?.chapter_id ?? ""));
   const clear = () => {
     setRowSelection({});
-    setChapterSelection([]);
     setActiveRow(null);
   };
   const apply = (state: Parameters<typeof controller.apply>[0]) => {
@@ -427,11 +423,8 @@ export function QuoteChaptersDataTable({
     apply(next);
     setDeleting(null);
   };
-  const selection = { chapters: chapterSelection, indexes: selectedIndexes };
-  const selectedCount =
-    chapterSelection.length +
-    selectedIndexes.filter((index) => !chapterSelection.includes(items[index]?.chapter_id ?? ""))
-      .length;
+  const selection: Selection = { chapters: [], indexes: selectedIndexes };
+  const selectedCount = selectedIndexes.length;
   const insert = (index: number, after = false) => {
     const state = controller.read();
     apply(
@@ -444,17 +437,20 @@ export function QuoteChaptersDataTable({
       )
     );
   };
-  const chapterColumns = useMemo<ColumnDef<RowIdData, unknown>[]>(() => [
-    {
-      id: "chapter_tree",
-      header: () => null,
-      cell: () => null,
-      size: 44,
-      enableHiding: false,
-      enableSorting: false,
-    },
-    ...columns,
-  ], [columns]);
+  const chapterColumns = useMemo<ColumnDef<RowIdData, unknown>[]>(
+    () => [
+      {
+        id: "chapter_tree",
+        header: () => null,
+        cell: () => null,
+        size: 56,
+        enableHiding: false,
+        enableSorting: false,
+      },
+      ...columns,
+    ],
+    [columns]
+  );
   const table = useReactTable({
     data,
     columns: chapterColumns,
@@ -494,17 +490,16 @@ export function QuoteChaptersDataTable({
     useSensor(KeyboardSensor, { coordinateGetter: keyboardCoordinates })
   );
   const dragEnd = ({ active, over }: DragEndEvent) => {
-    if (!over || active.id === over.id || mixed) return;
+    if (!over || active.id === over.id) return;
     const state = controller.read();
     if (isChapter(active.id)) {
       if (!isChapter(over.id)) return;
       const from = String(active.id).slice(8);
       const to = String(over.id).slice(8);
-      const moving = chapterSelection.includes(from) ? chapterSelection : [from];
       apply(
         moveChapters(
           state,
-          moving,
+          [from],
           to,
           state.chapters.findIndex((chapter) => chapter.id === from) <
             state.chapters.findIndex((chapter) => chapter.id === to)
@@ -543,12 +538,7 @@ export function QuoteChaptersDataTable({
         sensors={sensors}
         onDragEnd={dragEnd}
         onDragStart={({ active }) => {
-          if (
-            isChapter(active.id)
-              ? !chapterSelection.includes(String(active.id).slice(8))
-              : !rowSelection[active.id]
-          )
-            clear();
+          if (isChapter(active.id) || !rowSelection[active.id]) clear();
         }}
         collisionDetection={(args) => {
           const valid = {
@@ -587,16 +577,19 @@ export function QuoteChaptersDataTable({
                   <Button type='button' variant='ghost' size='sm' onClick={onAddChapter}>
                     {t("quotes.chapters.add")}
                   </Button>
-                  <Button type='button' variant='ghost' size='sm' onClick={() => setUngrouping(true)}>
+                  <Button
+                    type='button'
+                    variant='ghost'
+                    size='sm'
+                    onClick={() => setUngrouping(true)}
+                  >
                     {t("quotes.chapters.ungroup")}
                   </Button>
                 </>
               }
               viewControls={
-                <div className='flex min-h-9 items-center gap-2'>
-                  <Label htmlFor='chapter-line-amounts'>
-                    {t("quotes.chapters.show_amounts")}
-                  </Label>
+                <div className='flex items-center gap-2 min-h-9'>
+                  <Label htmlFor='chapter-line-amounts'>{t("quotes.chapters.show_amounts")}</Label>
                   <Switch
                     id='chapter-line-amounts'
                     checked={watch("show_chapter_line_amounts") ?? true}
@@ -607,14 +600,9 @@ export function QuoteChaptersDataTable({
                 </div>
               }
             />
-            {mixed && (
-              <p role='status' className='text-sm'>
-                {t("quotes.chapters.mixed_selection")}
-              </p>
-            )}
           </CardHeader>
           <CardContent>
-            <Table className='table-fixed border-separate border-spacing-0'>
+            <Table className='border-separate table-fixed border-spacing-0'>
               <colgroup>
                 {table.getVisibleLeafColumns().map((column) => (
                   <col key={column.id} style={{ width: column.getSize() }} />
@@ -634,15 +622,6 @@ export function QuoteChaptersDataTable({
                       chapter={chapter}
                       index={chapterIndex}
                       columns={countColumns}
-                      mixed={mixed}
-                      selected={chapterSelection.includes(chapter.id)}
-                      onSelect={(value) =>
-                        setChapterSelection((previous) =>
-                          value
-                            ? [...previous, chapter.id]
-                            : previous.filter((id) => id !== chapter.id)
-                        )
-                      }
                       onActivate={() => controller.setActiveId(chapter.id)}
                       onDuplicate={() => duplicate({ chapters: [chapter.id], indexes: [] })}
                       onRemove={() => remove({ chapters: [chapter.id], indexes: [] })}
@@ -650,44 +629,49 @@ export function QuoteChaptersDataTable({
                     >
                       {(collapsed, hidden) => (
                         <>
-                          {rows.length > 0 && table.getHeaderGroups().map((group) => (
-                            <TableRow
-                              key={group.id}
-                              hidden={hidden}
-                              data-chapter-columns={chapter.id}
-                              className='bg-muted/30 hover:bg-muted/30'
-                            >
-                              {group.headers.map((header) => (
-                                <TableHead key={header.id} scope='col' className='px-2'>
-                                  <ChapterContent>
-                                    {header.column.id === "select" ? (
-                                      <Checkbox
-                                        aria-label={t("quotes.chapters.select_details", {
-                                          number: chapterIndex + 1,
-                                        })}
-                                        checked={
-                                          rows.every((row) => row.getIsSelected()) ||
-                                          (rows.some((row) => row.getIsSelected()) && "indeterminate")
-                                        }
-                                        onCheckedChange={(checked) => {
-                                          setRowSelection((previous) => {
-                                            const next = { ...previous };
-                                            for (const row of rows) {
-                                              if (checked) next[row.id] = true;
-                                              else delete next[row.id];
-                                            }
-                                            return next;
-                                          });
-                                        }}
-                                      />
-                                    ) : header.isPlaceholder ? null : (
-                                      flexRender(header.column.columnDef.header, header.getContext())
-                                    )}
-                                  </ChapterContent>
-                                </TableHead>
-                              ))}
-                            </TableRow>
-                          ))}
+                          {rows.length > 0 &&
+                            table.getHeaderGroups().map((group) => (
+                              <TableRow
+                                key={group.id}
+                                hidden={hidden}
+                                data-chapter-columns={chapter.id}
+                                className='bg-muted/30 hover:bg-muted/30'
+                              >
+                                {group.headers.map((header) => (
+                                  <TableHead key={header.id} scope='col' className='px-2'>
+                                    <ChapterContent>
+                                      {header.column.id === "select" ? (
+                                        <Checkbox
+                                          aria-label={t("quotes.chapters.select_details", {
+                                            number: chapterIndex + 1,
+                                          })}
+                                          checked={
+                                            rows.every((row) => row.getIsSelected()) ||
+                                            (rows.some((row) => row.getIsSelected()) &&
+                                              "indeterminate")
+                                          }
+                                          onCheckedChange={(checked) => {
+                                            setRowSelection((previous) => {
+                                              const next = { ...previous };
+                                              for (const row of rows) {
+                                                if (checked) next[row.id] = true;
+                                                else delete next[row.id];
+                                              }
+                                              return next;
+                                            });
+                                          }}
+                                        />
+                                      ) : header.isPlaceholder ? null : (
+                                        flexRender(
+                                          header.column.columnDef.header,
+                                          header.getContext()
+                                        )
+                                      )}
+                                    </ChapterContent>
+                                  </TableHead>
+                                ))}
+                              </TableRow>
+                            ))}
                           <SortableContext
                             items={collapsed ? [] : rows.map((row) => row.id)}
                             strategy={verticalListSortingStrategy}
@@ -697,7 +681,7 @@ export function QuoteChaptersDataTable({
                                 <QuoteItemsSortableTableRow
                                   id={row.id}
                                   hidden={hidden}
-                                  disabled={collapsed || mixed || chapterSelection.length > 0}
+                                  disabled={collapsed}
                                   isActive={activeRow === row.id}
                                   onActivate={(event) => {
                                     if ((event.target as HTMLElement).closest('[role="checkbox"]'))
@@ -706,23 +690,35 @@ export function QuoteChaptersDataTable({
                                     controller.setActiveId(chapter.id);
                                   }}
                                 >
-                                  {row.getVisibleCells().map((cell) => cell.column.id === "chapter_tree" ? (
-                                    <ChapterSpacerCell key={cell.id} />
-                                  ) : (
-                                    <TableCell
-                                      key={cell.id}
-                                      className={cell.column.id === "description" ? "py-2 pl-4 pr-2 align-top" : "px-2 py-2 align-top"}
-                                    >
-                                      <ChapterContent>
-                                        {flexRender(cell.column.columnDef.cell, cell.getContext())}
-                                      </ChapterContent>
-                                    </TableCell>
-                                  ))}
+                                  {row.getVisibleCells().map((cell) =>
+                                    cell.column.id === "chapter_tree" ? (
+                                      <ChapterSpacerCell key={cell.id} />
+                                    ) : (
+                                      <TableCell
+                                        key={cell.id}
+                                        className={
+                                          cell.column.id === "description"
+                                            ? "py-2 pl-4 pr-2 align-top"
+                                            : "px-2 py-2 align-top"
+                                        }
+                                      >
+                                        <ChapterContent>
+                                          {flexRender(
+                                            cell.column.columnDef.cell,
+                                            cell.getContext()
+                                          )}
+                                        </ChapterContent>
+                                      </TableCell>
+                                    )
+                                  )}
                                 </QuoteItemsSortableTableRow>
                                 {activeRow === row.id && (
-                                  <TableRow hidden={hidden}>
-                                    <ChapterSpacerCell />
-                                    <TableCell colSpan={countColumns - 1}>
+                                  <TableRow
+                                    hidden={hidden}
+                                    data-active-item='actions'
+                                    className='bg-destructive/5 hover:bg-destructive/5 focus-within:bg-destructive/5'
+                                  >
+                                    <TableCell colSpan={countColumns} className='px-2 py-2'>
                                       <ChapterContent>
                                         <QuoteItemsInlineRowActions
                                           confirmDelete={false}
@@ -744,7 +740,9 @@ export function QuoteChaptersDataTable({
                                 collapsed={collapsed}
                                 onAddRow={() => {
                                   controller.setActiveId(chapter.id);
-                                  apply(insertChapterItem(controller.read(), defaultItem, chapter.id));
+                                  apply(
+                                    insertChapterItem(controller.read(), defaultItem, chapter.id)
+                                  );
                                 }}
                                 onAddArticle={() => {
                                   controller.setActiveId(chapter.id);
@@ -793,7 +791,8 @@ export function QuoteChaptersDataTable({
                 <SelectContent>
                   {destinations.map((chapter) => (
                     <SelectItem key={chapter.id} value={chapter.id}>
-                      {chapters.findIndex((entry) => entry.id === chapter.id) + 1}. {chapter.description}
+                      {chapters.findIndex((entry) => entry.id === chapter.id) + 1}.{" "}
+                      {chapter.description}
                     </SelectItem>
                   ))}
                 </SelectContent>
diff --git a/client/src/app/quotes/components/QuoteItemsSortableDragHandleCell.tsx b/client/src/app/quotes/components/QuoteItemsSortableDragHandleCell.tsx
index 8ca087a..6d92702 100644
--- a/client/src/app/quotes/components/QuoteItemsSortableDragHandleCell.tsx
+++ b/client/src/app/quotes/components/QuoteItemsSortableDragHandleCell.tsx
@@ -30,6 +30,8 @@ export const QuoteItemsSortableDragHandleCell = ({
       className={cn(
         isDragging ? "cursor-grabbing" : "cursor-grab",
         "w-4 h-4 mt-2 text-ring hover:text-muted-foreground touch-none",
+        "transition-opacity motion-reduce:transition-none group-hover/detail:opacity-100 focus-visible:opacity-100 [@media(hover:none)]:opacity-100",
+        isDragging ? "opacity-100" : "opacity-0",
         className
       )}
       {...attributes}
diff --git a/client/src/app/quotes/components/QuoteItemsSortableTableRow.tsx b/client/src/app/quotes/components/QuoteItemsSortableTableRow.tsx
index 3da1f95..49f34be 100644
--- a/client/src/app/quotes/components/QuoteItemsSortableTableRow.tsx
+++ b/client/src/app/quotes/components/QuoteItemsSortableTableRow.tsx
@@ -84,12 +84,13 @@ export function QuoteItemsSortableTableRow({
         key={id}
         id={String(id)}
         hidden={hidden}
+        data-active-item={isActive ? "detail" : undefined}
         className={cn(
           isDragging ? "opacity-60" : "opacity-100",
           isActive
             ? "border border-destructive/30 border-b-0 border-l-4 border-l-destructive bg-destructive/5 hover:bg-destructive/5 focus-within:bg-destructive/5"
             : "hover:bg-muted hover:focus-within:bg-accent focus-within:bg-accent",
-          "m-0"
+          "group/detail m-0"
         )}
         ref={setNodeRef}
         style={style}
diff --git a/client/src/app/quotes/components/editors/QuoteChapterEditor.test.tsx b/client/src/app/quotes/components/editors/QuoteChapterEditor.test.tsx
index a12b434..46c76a1 100644
--- a/client/src/app/quotes/components/editors/QuoteChapterEditor.test.tsx
+++ b/client/src/app/quotes/components/editors/QuoteChapterEditor.test.tsx
@@ -318,11 +318,9 @@ it("moves a whole chapter with its details, and details to an empty chapter", ()
   );
 });
 
-it("duplicates a selected chapter once and can return to free mode preserving every detail", () => {
+it("duplicates a chapter using its action and can return to free mode preserving every detail", () => {
   render(<Harness grouped />);
-  fireEvent.click(screen.getByLabelText("Seleccionar capítulo 1"));
-  fireEvent.click(screen.getByLabelText("Seleccionar fila"));
-  fireEvent.click(screen.getByText("Duplicar"));
+  fireEvent.click(screen.getByLabelText("Duplicar capítulo 1"));
   expect(snapshot().chapters).toHaveLength(3);
   expect(snapshot().items).toHaveLength(2);
   expect(snapshot().items[1].chapter_id).not.toBe(chapterA);
@@ -410,22 +408,19 @@ it("deletes chapter content only after explicit confirmation", () => {
   expect(snapshot().chapters.map((entry: { id: string }) => entry.id)).toEqual([chapterB]);
 });
 
-it("disables mixed chapter/detail dragging without disabling selection actions", () => {
+it("selects only detail rows and keeps chapter controls available", () => {
   render(<Harness grouped />);
-  fireEvent.focus(screen.getByLabelText("Título del capítulo 2"));
-  fireEvent.click(screen.getByText("Añadir fila"));
-  fireEvent.click(screen.getByLabelText("Seleccionar capítulo 1"));
-  const row = screen.getByLabelText("items.1.description").closest("tr")!;
+  for (const heading of document.querySelectorAll("[data-chapter-id]")) {
+    expect(heading.querySelector('[role="checkbox"]')).toBeNull();
+  }
+  const row = screen.getByLabelText("items.0.description").closest("tr")!;
   fireEvent.click(within(row).getByLabelText("Seleccionar fila"));
-  expect(
-    screen.getByText("Para mover la selección, selecciona solo capítulos o solo detalles.")
-  ).toBeTruthy();
-  expect((screen.getByLabelText("Mover capítulo 1") as HTMLButtonElement).disabled).toBe(true);
-  drop(`chapter:${chapterA}`, `chapter:${chapterB}`);
-  expect(snapshot().chapters.map((entry: { id: string }) => entry.id)).toEqual([
-    chapterA,
-    chapterB,
-  ]);
+  expect(within(row).getByLabelText("Seleccionar fila").getAttribute("aria-checked")).toBe("true");
+  expect((screen.getByLabelText("Mover capítulo 1") as HTMLButtonElement).disabled).toBe(false);
+  fireEvent.click(screen.getByText("Duplicar"));
+  expect(snapshot().chapters).toHaveLength(2);
+  expect(snapshot().items).toHaveLength(2);
+  expect(snapshot().items.every((entry: { chapter_id: string }) => entry.chapter_id === chapterA)).toBe(true);
 });
 
 it("uses valid keyboard destinations and rejects pointer drops outside chapter contents", () => {
@@ -562,7 +557,7 @@ it.each([true, false])("orders expand, drag and select controls with the expand
     const heading = table.querySelector<HTMLTableRowElement>(`[data-chapter-id="${chapterA}"]`)!;
     expect(screen.getByLabelText("Plegar capítulo 1").closest("td")).toBe(heading.cells[0]);
     expect(screen.getByLabelText("Mover capítulo 1").closest("td")).toBe(heading.cells[1]);
-    expect(screen.getByLabelText("Seleccionar capítulo 1").closest("td")).toBe(heading.cells[2]);
+    expect(heading.querySelector('[role="checkbox"]')).toBeNull();
   }
 });
 
@@ -644,8 +639,8 @@ it("shows chapter numbers as badges on the folder controls, including after reor
     expect(badge.textContent).toBe(String(number));
     expect(toggle.querySelector("svg")).toBeTruthy();
     expect(toggle.getAttribute("aria-label")).toContain(String(number));
-    expect(heading.cells[3].querySelector('svg.lucide-folder, svg.lucide-folder-open')).toBeNull();
-    expect(heading.cells[3].textContent).not.toMatch(/^\s*\d+/);
+    expect(heading.cells[1].querySelector('svg.lucide-folder, svg.lucide-folder-open')).toBeNull();
+    expect(heading.cells[1].textContent).not.toMatch(/^\s*\d+/);
   };
   assertBadge(chapterA, 1);
   assertBadge(chapterB, 2);
diff --git a/client/src/app/quotes/components/editors/QuoteDetailsCardEditor.tsx b/client/src/app/quotes/components/editors/QuoteDetailsCardEditor.tsx
index bde2dd2..031df4e 100644
--- a/client/src/app/quotes/components/editors/QuoteDetailsCardEditor.tsx
+++ b/client/src/app/quotes/components/editors/QuoteDetailsCardEditor.tsx
@@ -12,14 +12,14 @@ import { useToast } from "@/ui/use-toast";
 import { CurrencyData, Language, Quantity, UnitPrice } from "@shared/contexts";
 import { ColumnDef } from "@tanstack/react-table";
 import { useCallback, useMemo, useState } from "react";
-import { useTranslation } from "react-i18next";
 import { useFieldArray, useFormContext } from "react-hook-form";
+import { useTranslation } from "react-i18next";
 import { addChapter, EditorItem } from "../../chapterEditor";
 import { useChapterEditor } from "../../hooks/useChapterEditor";
-import { QuoteChapterCreateDialog } from "../QuoteChapterCreateDialog";
-import { QuoteChaptersDataTable } from "../QuoteChaptersDataTable";
 import { useDetailColumns } from "../../hooks/useDetailColumns";
 import { CatalogPickerDataTable } from "../CatalogPickerDataTable";
+import { QuoteChapterCreateDialog } from "../QuoteChapterCreateDialog";
+import { QuoteChaptersDataTable } from "../QuoteChaptersDataTable";
 import { QuoteItemsSortableDataTable, RowIdData } from "../QuoteItemsSortableDataTable";
 import { BlocksPickerDialog } from "./BlocksPickerDialog/BlocksPickerDialog";
 import { CatalogPickerDialog } from "./CatalogPickerDialog";
@@ -39,8 +39,8 @@ export const QuoteDetailsCardEditor = ({
   const documentLanguageCode = watch("lang_code") || Language.DEFAULT_LANGUAGE_CODE;
   const showLineDiscountColumn = watch("show_line_discount_column") ?? true;
   const hasLineDiscounts = Boolean(
-    getValues("items")?.some((item: { discount?: { amount?: number | null } }) =>
-      Number(item.discount?.amount) > 0
+    getValues("items")?.some(
+      (item: { discount?: { amount?: number | null } }) => Number(item.discount?.amount) > 0
     )
   );
 
@@ -56,12 +56,16 @@ export const QuoteDetailsCardEditor = ({
 
   const chapterEditor = useChapterEditor(fieldActions.replace);
   const [createChapterOpen, setCreateChapterOpen] = useState(false);
-  const appendPicked = useCallback((item: unknown) => {
-    if (chapterEditor.chapters.length) chapterEditor.appendPickedItem(item as EditorItem);
-    else fieldActions.append(item);
-  }, [chapterEditor, fieldActions]);
+  const appendPicked = useCallback(
+    (item: unknown) => {
+      if (chapterEditor.chapters.length) chapterEditor.appendPickedItem(item as EditorItem);
+      else fieldActions.append(item);
+    },
+    [chapterEditor, fieldActions]
+  );
 
-  const detailColumns = useMemo<ColumnDef<RowIdData, unknown>[]>(() => [
+  const detailColumns = useMemo<ColumnDef<RowIdData, unknown>[]>(
+    () => [
       /*{
         id: "row_id" as const,
         header: () => (
@@ -95,17 +99,12 @@ export const QuoteDetailsCardEditor = ({
         cell: ({ row: { index, original } }) => {
           if (original?.id_article) {
             return (
-              <div className='min-h-10 whitespace-pre-wrap px-3 py-2 text-sm'>
+              <div className='px-3 py-2 text-sm whitespace-pre-wrap min-h-10'>
                 {original.localized_description ?? original.description}
               </div>
             );
           }
-          return (
-            <FormTextAreaField
-              autoSize
-              name={`items.${index}.description`}
-            />
-          );
+          return <FormTextAreaField autoSize name={`items.${index}.description`} />;
         },
         minSize: 200,
         size: 400,
@@ -118,11 +117,7 @@ export const QuoteDetailsCardEditor = ({
         ),
         cell: ({ row: { index } }) => {
           return (
-            <FormQuantityField
-              scale={0}
-              className='text-right'
-              name={`items.${index}.quantity`}
-            />
+            <FormQuantityField scale={0} className='text-right' name={`items.${index}.quantity`} />
           );
         },
         size: 75,
@@ -205,13 +200,13 @@ export const QuoteDetailsCardEditor = ({
         },
         size: 150,
       },
-    ], [currency, language, t]);
-  const columns = useDetailColumns(detailColumns,
-    {
-      enableDragHandleColumn: true,
-      enableSelectionColumn: true,
-    }
+    ],
+    [currency, language, t]
   );
+  const columns = useDetailColumns(detailColumns, {
+    enableDragHandleColumn: true,
+    enableSelectionColumn: true,
+  });
 
   const handleAppendCatalogArticle = useCallback(
     (article: any, quantity: number = 1) => {
@@ -266,29 +261,67 @@ export const QuoteDetailsCardEditor = ({
   const defaultLayout = [265, 440, 655];
   const navCollapsedSize = 4;
 
-  const pickCatalogArticle = (chapterId?: string) => { chapterEditor.capturePickerTarget(chapterId); setArticlePickerDialogOpen(true); };
-  const pickBlock = (chapterId?: string) => { chapterEditor.capturePickerTarget(chapterId); setBlockPickerDialogOpen(true); };
-  const onShowLineDiscountColumnChange = (value: boolean) => setValue("show_line_discount_column", value, { shouldDirty: true });
+  const pickCatalogArticle = (chapterId?: string) => {
+    chapterEditor.capturePickerTarget(chapterId);
+    setArticlePickerDialogOpen(true);
+  };
+  const pickBlock = (chapterId?: string) => {
+    chapterEditor.capturePickerTarget(chapterId);
+    setBlockPickerDialogOpen(true);
+  };
+  const onShowLineDiscountColumnChange = (value: boolean) =>
+    setValue("show_line_discount_column", value, { shouldDirty: true });
   const table = chapterEditor.chapters.length ? (
-    <QuoteChaptersDataTable controller={chapterEditor} columns={columns} data={fields}
-      defaultItem={defaultValues?.items[0]} currencyCode={currency.code}
-      showLineDiscountColumn={showLineDiscountColumn} hasLineDiscounts={hasLineDiscounts}
+    <QuoteChaptersDataTable
+      controller={chapterEditor}
+      columns={columns}
+      data={fields}
+      defaultItem={defaultValues?.items[0]}
+      currencyCode={currency.code}
+      showLineDiscountColumn={showLineDiscountColumn}
+      hasLineDiscounts={hasLineDiscounts}
       onShowLineDiscountColumnChange={onShowLineDiscountColumnChange}
-      onAddChapter={() => setCreateChapterOpen(true)} pickCatalogArticle={pickCatalogArticle} pickBlock={pickBlock} />
+      onAddChapter={() => setCreateChapterOpen(true)}
+      pickCatalogArticle={pickCatalogArticle}
+      pickBlock={pickBlock}
+    />
   ) : (
-    <QuoteItemsSortableDataTable actions={{ ...fieldActions, getItem: (rowIndex) => getValues(`items.${rowIndex}`), pickCatalogArticle, pickBlock }}
-      columns={columns} data={fields} defaultValues={defaultValues}
-      extraControls={<Button type="button" variant="ghost" size="sm" onClick={() => setCreateChapterOpen(true)}>{t("quotes.chapters.add")}</Button>}
-      showLineDiscountColumn={showLineDiscountColumn} hasLineDiscounts={hasLineDiscounts}
-      onShowLineDiscountColumnChange={onShowLineDiscountColumnChange} />
+    <QuoteItemsSortableDataTable
+      actions={{
+        ...fieldActions,
+        getItem: (rowIndex) => getValues(`items.${rowIndex}`),
+        pickCatalogArticle,
+        pickBlock,
+      }}
+      columns={columns}
+      data={fields}
+      defaultValues={defaultValues}
+      extraControls={
+        <Button type='button' variant='ghost' size='sm' onClick={() => setCreateChapterOpen(true)}>
+          {t("quotes.chapters.add")}
+        </Button>
+      }
+      showLineDiscountColumn={showLineDiscountColumn}
+      hasLineDiscounts={hasLineDiscounts}
+      onShowLineDiscountColumnChange={onShowLineDiscountColumnChange}
+    />
+  );
+  const createChapterDialog = (
+    <QuoteChapterCreateDialog
+      open={createChapterOpen}
+      onOpenChange={setCreateChapterOpen}
+      onCreate={(description) => {
+        const before = chapterEditor.read();
+        const next = addChapter(before, description, chapterEditor.activeId);
+        chapterEditor.apply(next);
+        chapterEditor.focusTitle(
+          next.chapters.find(
+            (chapter) => !before.chapters.some((entry) => entry.id === chapter.id)
+          )!.id
+        );
+      }}
+    />
   );
-  const createChapterDialog = <QuoteChapterCreateDialog open={createChapterOpen} onOpenChange={setCreateChapterOpen}
-    onCreate={(description) => {
-      const before = chapterEditor.read();
-      const next = addChapter(before, description, chapterEditor.activeId);
-      chapterEditor.apply(next);
-      chapterEditor.focusTitle(next.chapters.find((chapter) => !before.chapters.some((entry) => entry.id === chapter.id))!.id);
-    }} />;
 
   if (pickerMode === "dialog") {
     return (
diff --git a/client/src/app/quotes/hooks/useChapterCollapse.ts b/client/src/app/quotes/hooks/useChapterCollapse.ts
index 2338407..f5a4c34 100644
--- a/client/src/app/quotes/hooks/useChapterCollapse.ts
+++ b/client/src/app/quotes/hooks/useChapterCollapse.ts
@@ -18,7 +18,9 @@ export function useChapterCollapse() {
       return;
     }
     const currentRevision = ++revision.current;
-    const contents = Array.from(ref.current?.querySelectorAll<HTMLElement>("[data-chapter-content]") ?? []);
+    const contents = Array.from(
+      ref.current?.querySelectorAll<HTMLElement>("[data-chapter-content]") ?? []
+    );
     const rows = Array.from(new Set(contents.map((content) => content.closest("tr")!)));
     for (const row of rows) {
       row.toggleAttribute("inert", collapsed);
@@ -44,8 +46,11 @@ export function useChapterCollapse() {
     animations.current.forEach((animation) => animation.cancel());
     animations.current = [];
 
-    if (!contents.length || typeof contents[0].animate !== "function" ||
-      window.matchMedia?.("(prefers-reduced-motion: reduce)").matches) {
+    if (
+      !contents.length ||
+      typeof contents[0].animate !== "function" ||
+      window.matchMedia?.("(prefers-reduced-motion: reduce)").matches
+    ) {
       setHidden(collapsed);
       return;
     }
@@ -62,8 +67,16 @@ export function useChapterCollapse() {
     const options: KeyframeAnimationOptions = { duration, easing: "ease-in-out", fill: "both" };
     animations.current = [
       ...contents.map((content, index) => content.animate([
-        { height: `${contentStarts[index].height}px`, opacity: contentStarts[index].opacity, overflow: "hidden" },
-        { height: `${collapsed ? 0 : contentEnds[index]}px`, opacity: collapsed ? 0 : 1, overflow: "hidden" },
+        {
+          height: `${contentStarts[index].height}px`,
+          opacity: contentStarts[index].opacity,
+          overflow: "hidden",
+        },
+        {
+          height: `${collapsed ? 0 : contentEnds[index]}px`,
+          opacity: collapsed ? 0 : 1,
+          overflow: "hidden",
+        },
       ], options)),
       ...cells.map((cell, index) => cell.animate([cellStarts[index], cellEnds[index]], options)),
     ];
diff --git a/client/src/app/quotes/hooks/useDetailColumns.tsx b/client/src/app/quotes/hooks/useDetailColumns.tsx
index 18aa7cd..9097058 100644
--- a/client/src/app/quotes/hooks/useDetailColumns.tsx
+++ b/client/src/app/quotes/hooks/useDetailColumns.tsx
@@ -54,7 +54,7 @@ export function useDetailColumns<TData = unknown, TValue = unknown>(
             disabled={!row.getCanSelect()}
             onCheckedChange={(value) => row.toggleSelected(Boolean(value))}
             aria-label={t("common.select_row")}
-            className='mt-2'
+            className='mt-2 opacity-0 data-[state=checked]:opacity-100 transition-opacity group-hover/detail:opacity-100 focus-visible:opacity-100 motion-reduce:transition-none [@media(hover:none)]:opacity-100'
           />
         ),
         enableSorting: false,
diff --git a/doc/capitulos-cotizaciones.md b/doc/capitulos-cotizaciones.md
index 376dfaf..e36f825 100644
--- a/doc/capitulos-cotizaciones.md
+++ b/doc/capitulos-cotizaciones.md
@@ -364,3 +364,47 @@ Inconsistencias observadas, sin cambios fuera del alcance:
 - Validación: 28 pruebas de editor/barra y cinco de traducciones; TypeScript sin emisión; ESLint acotado sin errores (tres advertencias `any` previas del editor); Tailwind compilado en `/tmp`; `git diff --check`. Persisten los avisos previos de paginación fuera de `act` y de Browserslist desactualizado.
 - Revisión local con Chromium a 1440 y 375 px sobre HTML del harness: badge sobre carpeta, una cabecera para el capítulo con contenido y tres acciones en el vacío. En móvil la tabla mantiene su desplazamiento horizontal. Artefactos temporales `/tmp/uecko-chapter-empty-*`; el fixture temporal se retiró. No es una prueba E2E con API autenticada.
 - No se ejecutan base de datos, PDF ni builds de distribución: esta ampliación afecta a la presentación e inserción de detalles del editor, sin cambios en persistencia o informes.
+
+### Ajuste: alineación del arrastre y plegado animado
+
+- `QuoteChaptersDataTable.tsx`: el botón de arrastre del título usa el mismo ancho de 16 px que el de las líneas. Ambos iconos comparten eje horizontal, conservando el orden de columnas y el badge de la carpeta.
+- `useChapterCollapse.ts`: transición de altura y opacidad de 200 ms mediante Web Animations API. Se animan el contenido y el espaciado de las celdas antes de ocultar sus filas; incluye cabeceras, detalles, acciones y estado vacío. Los campos permanecen montados; título y subtotal siguen visibles. Se respeta `prefers-reduced-motion` y se pliega inmediatamente cuando no hay soporte para animación.
+- Durante el cierre, las filas dejan de ser interactivas mediante `inert` y `aria-hidden`; el arrastre de detalles/destinos vacíos se desactiva desde el inicio. Al invertir el sentido, se cancela la transición anterior y se parte de la posición actual. Al desmontar, se cancelan las animaciones pendientes.
+- Dos pruebas nuevas del editor verifican ocultación tras finalizar, reversión sin ocultaciones obsoletas, conservación de valores y movimiento reducido. Validación: 26 pruebas del editor, TypeScript sin emisión, ESLint acotado sin errores y `git diff --check`. Persiste el aviso previo de paginación React/TanStack fuera de `act` en la suite completa; las nuevas pruebas aisladas pasan sin ese aviso.
+- Chromium local verifica geometría sobre el HTML actual del harness y ejecuta el hook real: centros de ambos iconos en 117,53125 px; altura del grupo de 222 a 117 px con estados intermedios de 170 y 184,6875 px; recuperación de altura/valores originales y ausencia de animación con movimiento reducido. Artefactos en `/tmp/uecko-chapter-animation-*`; fixture temporal retirado. Esta comprobación no es un E2E con la API autenticada.
+- No se ejecutan builds de distribución, PDF ni base de datos: son cambios de presentación del editor, sin cambios de persistencia o informes. La compilación Tailwind se dirige a `/tmp` y conserva el aviso previo de Browserslist desactualizado.
+
+### Corrección: resaltado conjunto de detalle activo y acciones
+
+- `QuoteItemsSortableTableRow.tsx` identifica la fila activa mediante `data-active-item`. `QuoteChaptersDataTable.tsx` aplica el contorno a sus celdas, porque los bordes de las filas no se dibujan en la tabla con `border-separate`.
+- Detalle y acciones comparten fondo rojo claro, borde izquierdo rojo de 4 px y contorno exterior fino; se retira el separador intermedio. Las acciones ocupan todo el ancho de la tabla y empiezan junto al borde izquierdo, como en la presentación original. El estilo de selección no se aplica a los capítulos ni a otras líneas.
+- Validación: 26 pruebas existentes del editor, TypeScript sin emisión, ESLint acotado sin errores (dos advertencias previas en el componente de fila) y `git diff --check`. Chromium local verifica igualdad de fondos, continuidad del contorno y ausencia de espacio o borde entre detalle y acciones. Muestra en `/tmp/uecko-active-row.png`, generada desde el harness del editor; fixture temporal retirado.
+- No se ejecutan base de datos, PDF, builds de distribución ni E2E autenticados: es una corrección de estilos. Persisten los avisos previos de paginación fuera de `act` y Browserslist desactualizado.
+
+### Ajuste: selección exclusiva de líneas de detalle
+
+- Se elimina el checkbox de los títulos de capítulo, manteniendo su celda vacía para alinear las columnas. La selección se limita a los detalles; el checkbox de cabecera de columnas conserva la selección conjunta de los detalles de ese capítulo.
+- Se retira del editor el estado de selección múltiple de capítulos y su bloqueo por selección mixta. Los capítulos se mueven individualmente con todo su contenido y conservan sus botones propios de duplicar/eliminar. La barra actúa sobre los detalles seleccionados.
+- Se adaptan las pruebas existentes de duplicación, selección y alineación: 26 pruebas del editor correctas, TypeScript sin emisión, ESLint acotado sin errores y `git diff --check`. Persiste el aviso previo de paginación fuera de `act`. No se ejecutan PDF, base de datos ni E2E: el cambio se limita a la selección en el editor.
+
+### Ajuste: controles visibles al pasar el cursor
+
+- Las filas de detalle muestran arrastre y selección al pasar el cursor por su propia fila, con y sin capítulos. El checkbox marcado permanece visible aunque el cursor salga; al desmarcarlo vuelve a ocultarse. El asa también permanece visible durante el arrastre.
+- En el título de capítulo se muestran arrastre, duplicar y eliminar únicamente al pasar por ese título; el hover de los detalles no activa esos botones. Carpeta y badge siguen visibles. Se usan grupos Tailwind con nombre por tipo de fila y opacidad para mantener la alineación.
+- Cada control se revela también al recibir foco de teclado. En dispositivos sin hover permanecen visibles para permitir su uso táctil. La transición de opacidad respeta movimiento reducido.
+- Cambios en `QuoteChaptersDataTable.tsx`, `QuoteItemsSortableTableRow.tsx`, `QuoteItemsSortableDragHandleCell.tsx` y `useDetailColumns.tsx`. Validación: 27 pruebas existentes de editor/arrastre; ESLint acotado sin errores (dos advertencias previas de la fila); Tailwind compilado en `/tmp`; `git diff --check`. La última excepción de checkbox marcado se comprueba además con CSS real en Chromium.
+- Chromium local verifica ocultación, hover por fila, checkbox marcado/desmarcado, foco de teclado y controles táctiles, con y sin capítulos. Para comprobar selectores de escritorio se desactiva solo la regla táctil en el fixture, ya que Chromium sin interfaz informa `hover:none`; la prueba táctil usa la hoja original. Artefactos `/tmp/uecko-row-controls-*`; fixture temporal retirado. No es un E2E autenticado.
+- No se ejecutan TypeScript, builds de distribución, PDF ni base de datos: el cambio solo añade clases y no altera tipos, datos o informes. Persisten los avisos previos de paginación fuera de `act` y Browserslist desactualizado.
+
+### Ajuste: márgenes simétricos de carpeta y eliminar capítulo
+
+- `QuoteChaptersDataTable.tsx`: aumenta el espacio izquierdo de la carpeta y amplía la columna de despliegue de 44 a 56 px para alojarlo sin invadir la columna de arrastre. Conserva tamaños de iconos y botones, badge y alineación de detalles.
+- Chromium local mide 20 px tanto entre el borde izquierdo y la carpeta como entre la papelera y el borde derecho, en ambos capítulos a 1440 y 1024 px. El eje de las asas de título/detalle sigue coincidiendo (diferencia 0 px). HTML exportado del harness en `/tmp/uecko-chapter-spacing.html`; fixture temporal retirado.
+- Validación acotada: cuatro casos existentes de alineación/orden de columnas, ESLint del componente, compilación Tailwind hacia `/tmp` y `git diff --check`. No se ejecutan TypeScript, PDF, base de datos, builds de distribución ni E2E autenticados por ser un ajuste de espaciado. Persiste el aviso previo de Browserslist desactualizado.
+
+### Ajuste: título alineado con el arrastre de sus conceptos
+
+- El título de capítulo ocupa las columnas posteriores a la carpeta y empieza en el mismo eje vertical que el icono de arrastre de sus detalles. El asa del capítulo se sitúa a la derecha del título, junto a duplicar y eliminar; conserva eventos de arrastre, foco y visibilidad al pasar el cursor.
+- `QuoteChaptersDataTable.tsx` ajusta el colspan y espaciado del título. `QuoteChapterEditor.test.tsx` adapta las comprobaciones de estructura y badge a las dos celdas del título. Se mantienen orden de columnas de los detalles y márgenes exteriores de 20 px.
+- Validación: cinco casos existentes de alineación, orden y numeración (ejecutados también en el fixture temporal), ESLint sin errores, compilación Tailwind en `/tmp` y `git diff --check`. Chromium local mide diferencia de 0 px entre inicio del texto del título y lado izquierdo del icono de concepto, a 1440 y 1024 px, manteniendo márgenes de carpeta/papelera de 20 px. Fixture temporal retirado; muestra `/tmp/uecko-chapter-title.png`.
+- No se ejecutan TypeScript, PDF, base de datos, build de distribución ni E2E autenticado: es un cambio local de disposición, sin cambios de tipos o datos. Persiste el aviso previo de Browserslist desactualizado.