fix wip

src/modules/admin/components/courses/CourseReadingProgressList.jsx

@@ -1,6 +1,6 @@
 import { useEffect, useState, useMemo } from 'react';
 import {
-    CheckCircle2, Circle, BookOpen, Users, Search, ChevronLeft, ChevronRight, RefreshCcw, AlertTriangle
+    CheckCircle2, Circle, BookOpen, Users, Search, RefreshCcw, AlertTriangle
 } from 'lucide-react';
 import { Avatar, AvatarFallback, AvatarImage } from '@/components/ui/avatar';
 import { Badge } from '@/components/ui/badge';
@@ -12,15 +12,10 @@ import { ScrollArea } from '@/components/ui/scroll-area';
 import {
     Dialog, DialogContent, DialogHeader, DialogTitle, DialogDescription, DialogFooter, DialogClose,
 } from '@/components/ui/dialog';
-import {
-    Pagination, PaginationContent, PaginationItem,
-    PaginationLink, PaginationPrevious, PaginationNext, PaginationEllipsis,
-} from '@/components/ui/pagination';
+import { TablePagination } from '@/components/generic/Table/TablePagination';
 import { useAdminCourseReadingProgress } from '@/contexts/AdminCourseReadingProgressContext';
 import { useDateFormat } from '@/hooks/useDateFormat';
 
-const PAGE_SIZE = 10;
-
 // ─── Helpers ──────────────────────────────────────────────────────────────────
 
 function StatusBadge({ status }) {
@@ -228,63 +223,6 @@ function UserCard({ entry, onOpen }) {
     );
 }
 
-// ─── Pagination controls ──────────────────────────────────────────────────────
-
-function PaginationControls({ page, totalPages, onPage }) {
-    if (totalPages <= 1) return null;
-
-    const pages = [];
-    for (let i = 1; i <= totalPages; i++) pages.push(i);
-
-    // Show at most 5 page numbers around current
-    const getVisible = () => {
-        if (totalPages <= 5) return pages;
-        if (page <= 3) return [1, 2, 3, 4, null, totalPages];
-        if (page >= totalPages - 2) return [1, null, totalPages - 3, totalPages - 2, totalPages - 1, totalPages];
-        return [1, null, page - 1, page, page + 1, null, totalPages];
-    };
-
-    return (
-        <Pagination className="mt-4">
-            <PaginationContent>
-                <PaginationItem>
-                    <PaginationPrevious
-                        href="#"
-                        onClick={(e) => { e.preventDefault(); if (page > 1) onPage(page - 1); }}
-                        className={page === 1 ? 'pointer-events-none opacity-50' : ''}
-                    />
-                </PaginationItem>
-
-                {getVisible().map((p, i) =>
-                    p === null ? (
-                        <PaginationItem key={`ellipsis-${i}`}>
-                            <PaginationEllipsis />
-                        </PaginationItem>
-                    ) : (
-                        <PaginationItem key={p}>
-                            <PaginationLink
-                                href="#"
-                                isActive={p === page}
-                                onClick={(e) => { e.preventDefault(); onPage(p); }}
-                            >
-                                {p}
-                            </PaginationLink>
-                        </PaginationItem>
-                    )
-                )}
-
-                <PaginationItem>
-                    <PaginationNext
-                        href="#"
-                        onClick={(e) => { e.preventDefault(); if (page < totalPages) onPage(page + 1); }}
-                        className={page === totalPages ? 'pointer-events-none opacity-50' : ''}
-                    />
-                </PaginationItem>
-            </PaginationContent>
-        </Pagination>
-    );
-}
-
 // ─── Main component ───────────────────────────────────────────────────────────
 
 export default function CourseReadingProgressList({ courseId }) {
@@ -293,6 +231,7 @@ export default function CourseReadingProgressList({ courseId }) {
     const [searchInput, setSearchInput] = useState('');
     const [query, setQuery] = useState('');
     const [page, setPage] = useState(1);
+    const [pageSize, setPageSize] = useState(10);
     const [dialogEntry, setDialogEntry] = useState(null);
 
     useEffect(() => {
@@ -316,8 +255,19 @@ export default function CourseReadingProgressList({ courseId }) {
     }, [progressList, query]);
 
     // ── Paginate ──────────────────────────────────────────────────────────────
-    const totalPages = Math.max(1, Math.ceil(filtered.length / PAGE_SIZE));
-    const paginated = filtered.slice((page - 1) * PAGE_SIZE, page * PAGE_SIZE);
+    const totalPages = Math.max(1, Math.ceil(filtered.length / pageSize));
+    const paginated = filtered.slice((page - 1) * pageSize, page * pageSize);
+    const pagination = {
+        page,
+        limit: pageSize,
+        totalPages,
+        totalRecords: filtered.length,
+        hasPrevPage: page > 1,
+        hasNextPage: page < totalPages,
+    };
+
+    const handlePageChange = (p) => setPage(p);
+    const handlePageSizeChange = (size) => { setPageSize(size); setPage(1); };
 
     const completedCount = progressList.filter((e) => e.course_status === 'completed').length;
     const inProgressCount = progressList.length - completedCount;
@@ -407,7 +357,13 @@ export default function CourseReadingProgressList({ courseId }) {
             )}
 
             {/* ── Pagination ── */}
-            <PaginationControls page={page} totalPages={totalPages} onPage={setPage} />
+            <TablePagination
+                pagination={pagination}
+                onPageChange={handlePageChange}
+                rowCount={paginated.length}
+                onPageSizeChange={handlePageSizeChange}
+                recordLabel="student"
+            />
 
             {/* ── Detail Dialog ── */}
             <UserDetailDialog

src/modules/admin/components/courses/LessonsTable.jsx

@@ -1,4 +1,4 @@
-import { useMemo, useRef, useState, useEffect, useCallback } from "react";
+import { useMemo, useRef, useState, useCallback } from "react";
 import { useNavigate } from "react-router-dom";
 
 import { useCourses } from "@/contexts/AdminCoursesContext";
@@ -58,8 +58,6 @@ export default function LessonsTable({ courseId, unitId }) {
   );
 
   const rowActions = useMemo(() => buildRowActions({
-    onViewPage: (row) => navigate(`/admin/courses/${courseId}/units/${unitId}/lessons/${row.lesson_id}/page/view`),
-    onCreatePage: (row) => navigate(`/admin/courses/${courseId}/units/${unitId}/lessons/${row.lesson_id}/page`),
     onView: (row) => navigate(`/admin/courses/${courseId}/units/${unitId}/lessons/${row.lesson_id}/view`),
     onArchive: (row) => setArchiveTarget(row),
   }), [courseId, unitId]);

src/modules/admin/components/courses/UnitsTable.jsx

@@ -55,9 +55,6 @@ export default function UnitsTable({ courseId, returnTo }) {
   );
 
   const rowActions = useMemo(() => buildRowActions({
-    onViewQuiz: (row) => navigate(`/admin/courses/${courseId}/units/${row.unit_id}/quiz/view`),
-    onQuiz: (row) => navigate(`/admin/courses/${courseId}/units/${row.unit_id}/quiz/edit`),
-    onViewLessons: (row) => navigate(`/admin/courses/${courseId}/units/${row.unit_id}/lessons`),
     onView: (row) => navigate(`/admin/courses/${courseId}/units/${row.unit_id}/view`),
     onArchive: (row) => setArchiveTarget(row),
   }), [courseId]);

src/modules/admin/config/courses/lessons/rowActions.config.jsx

@@ -1,10 +1,6 @@
-import { Eye, Archive, SquarePlus, SquareChartGantt } from "lucide-react";
+import { Eye, Archive } from "lucide-react";
 
-// duration_seconds is derived from the lesson's authored content blocks
-// (see duration.util.js) — zero means no page content exists yet.
-const hasContent = (row) => !!row.duration_seconds;
-
-export function buildRowActions({ onCreatePage, onViewPage, onView, onArchive }) {
+export function buildRowActions({ onView, onArchive }) {
   return [
     {
       key: "view",
@@ -12,32 +8,6 @@ export function buildRowActions({ onCreatePage, onViewPage, onView, onArchive })
       icon: <Eye className="h-3.5 w-3.5" />,
       onClick: (row) => onView(row),
     },
-    {
-      key: "create_content",
-      label: "Create Content",
-      icon: <SquarePlus className="h-3.5 w-3.5" />,
-      className: "text-sky-700 hover:text-sky-600",
-      onClick: (row) => onCreatePage(row),
-      hidden: (row) => hasContent(row),
-      separator: true,
-    },
-    {
-      key: "view_content",
-      label: "View Content",
-      icon: <SquareChartGantt className="h-3.5 w-3.5" />,
-      className: "text-sky-700 hover:text-sky-600",
-      onClick: (row) => onViewPage(row),
-      hidden: (row) => !hasContent(row),
-      separator: true,
-    },
-    {
-      key: "modify_content",
-      label: "Modify Content",
-      icon: <SquarePlus className="h-3.5 w-3.5" />,
-      className: "text-sky-700 hover:text-sky-600",
-      onClick: (row) => onCreatePage(row),
-      hidden: (row) => !hasContent(row),
-    },
     {
       key: "archive",
       label: "Archive",

src/modules/admin/config/courses/units/rowActions.config.jsx

@@ -1,6 +1,6 @@
-import { Eye, Archive, BookCheck, NotebookPen, ClipboardList, PlusCircle } from "lucide-react";
+import { Eye, Archive } from "lucide-react";
 
-export function buildRowActions({ onViewLessons, onView, onArchive, onQuiz, onViewQuiz }) {
+export function buildRowActions({ onView, onArchive }) {
   return [
     {
       key: "view",
@@ -8,40 +8,6 @@ export function buildRowActions({ onViewLessons, onView, onArchive, onQuiz, onVi
       icon: <Eye className="h-3.5 w-3.5" />,
       onClick: (row) => onView(row),
     },
-    {
-      key: "view_units",
-      label: "View Lessons",
-      icon: <BookCheck className="h-3.5 w-3.5" />,
-      className: "text-sky-700 hover:text-sky-600",
-      onClick: (row) => onViewLessons(row),
-      separator: true,
-    },
-    {
-      key: "create_quiz",
-      label: "Create Quiz",
-      icon: <PlusCircle className="h-3.5 w-3.5" />,
-      className: "text-purple-700 hover:text-purple-600",
-      onClick: (row) => onQuiz(row),
-      hidden: (row) => !!(row.quiz_id || row.quiz),
-      separator: true,
-    },
-    {
-      key: "view_quiz",
-      label: "View Quiz",
-      icon: <ClipboardList className="h-3.5 w-3.5" />,
-      className: "text-purple-700 hover:text-purple-600",
-      onClick: (row) => onViewQuiz(row),
-      hidden: (row) => !(row.quiz_id || row.quiz),
-      separator: true,
-    },
-    {
-      key: "modify_quiz",
-      label: "Modify Quiz",
-      icon: <NotebookPen className="h-3.5 w-3.5" />,
-      className: "text-purple-700 hover:text-purple-600",
-      onClick: (row) => onQuiz(row),
-      hidden: (row) => !(row.quiz_id || row.quiz),
-    },
     {
       key: "archive",
       label: "Archive",

src/modules/admin/pages/courses/lessons/ViewLesson.jsx

@@ -1,6 +1,8 @@
 import { useEffect, useState } from "react";
 import { useNavigate, useParams } from "react-router-dom";
-import { House, Pencil, ArrowLeft, Clock, ListChecks, FileText } from "lucide-react";
+import {
+  Pencil, ArrowLeft, Clock, ListChecks, Info, FileText, SquarePlus, SquareChartGantt,
+} from "lucide-react";
 
 import { useCourses } from "@/contexts/AdminCoursesContext";
 import { useDateFormat } from "@/hooks/useDateFormat";
@@ -18,13 +20,136 @@ function InfoField({ label, value }) {
   );
 }
 
+// ─── Tabs ─────────────────────────────────────────────────────────────────────
+
+const TABS = [
+  { key: "details", label: "Lesson Details", icon: Info },
+  { key: "content",  label: "Content",        icon: FileText },
+];
+
+// ─── Details tab ──────────────────────────────────────────────────────────────
+
+function LessonDetailsTab({ lesson, fmtDate }) {
+  return (
+    <div className="space-y-6">
+      {/* Stats row */}
+      <div className="grid grid-cols-2 lg:grid-cols-4 gap-3">
+        <div className="bg-card rounded-lg border p-3 space-y-1">
+          <p className="text-xs text-muted-foreground uppercase tracking-wide font-medium">Order</p>
+          <p className="font-semibold text-sm">#{lesson?.order_index ?? 0}</p>
+        </div>
+        <div className="bg-card rounded-lg border p-3 space-y-1">
+          <p className="text-xs text-muted-foreground uppercase tracking-wide font-medium flex items-center gap-1">
+            <Clock className="h-3 w-3" /> Duration
+          </p>
+          <p className="font-semibold text-sm">{lesson?.duration_formatted ?? "0 mins"}</p>
+        </div>
+        <div className="bg-card rounded-lg border p-3 space-y-1">
+          <p className="text-xs text-muted-foreground uppercase tracking-wide font-medium">Created</p>
+          <p className="font-semibold text-sm">{fmtDate(lesson?.createdAt)}</p>
+        </div>
+        <div className="bg-card rounded-lg border p-3 space-y-1">
+          <p className="text-xs text-muted-foreground uppercase tracking-wide font-medium">Last Updated</p>
+          <p className="font-semibold text-sm">{fmtDate(lesson?.updatedAt)}</p>
+        </div>
+      </div>
+
+      {/* Details */}
+      <div className="rounded-lg border bg-card p-6 space-y-5">
+        <InfoField label="Title" value={lesson?.title} />
+        <InfoField label="Description" value={lesson?.description || "No description provided."} />
+        <InfoField label="Unit" value={lesson?.unit?.title} />
+      </div>
+
+      {/* Objectives */}
+      <div className="rounded-lg border bg-card p-6 space-y-4">
+        <div className="flex items-center gap-2">
+          <ListChecks className="h-4 w-4 text-muted-foreground" />
+          <p className="text-sm font-medium">Objectives</p>
+          <Badge variant="secondary" className="ml-auto">{lesson?.objectives?.length ?? 0}</Badge>
+        </div>
+
+        {lesson?.objectives?.length === 0 || !lesson?.objectives ? (
+          <p className="text-sm text-muted-foreground text-center py-4">No objectives defined.</p>
+        ) : (
+          <ul className="space-y-2">
+            {lesson.objectives.map((obj, i) => (
+              <li key={obj.objective_id} className="flex items-start gap-3 text-sm">
+                <span className="mt-0.5 flex h-5 w-5 shrink-0 items-center justify-center rounded-full bg-primary/10 text-primary text-xs font-medium">
+                  {i + 1}
+                </span>
+                <span>{obj.text}</span>
+              </li>
+            ))}
+          </ul>
+        )}
+      </div>
+    </div>
+  );
+}
+
+// ─── Content tab ──────────────────────────────────────────────────────────────
+
+function LessonContentTab({ lesson, courseId, unitId, lessonId }) {
+  const navigate = useNavigate();
+  const hasContent = !!lesson?.duration_seconds;
+
+  if (!hasContent) {
+    return (
+      <div className="rounded-lg border border-dashed bg-card p-12 flex flex-col items-center gap-3 text-center">
+        <FileText className="h-8 w-8 text-muted-foreground/40" />
+        <p className="text-sm text-muted-foreground">No content has been created for this lesson yet.</p>
+        <Button
+          size="sm"
+          variant="outline"
+          onClick={() => navigate(`/admin/courses/${courseId}/units/${unitId}/lessons/${lessonId}/page`)}
+        >
+          <SquarePlus className="h-4 w-4 mr-2" />
+          Create Content
+        </Button>
+      </div>
+    );
+  }
+
+  return (
+    <div className="rounded-lg border bg-card p-6 space-y-4">
+      <div className="flex items-center justify-between gap-4 flex-wrap">
+        <div>
+          <p className="text-sm font-medium">{lesson.title}</p>
+          <p className="text-xs text-muted-foreground">{lesson.duration_formatted ?? "0 mins"} of content</p>
+        </div>
+        <div className="flex items-center gap-2">
+          <Button
+            size="sm"
+            variant="outline"
+            onClick={() => navigate(`/admin/courses/${courseId}/units/${unitId}/lessons/${lessonId}/page/view`)}
+          >
+            <SquareChartGantt className="h-4 w-4 mr-2" />
+            View Content
+          </Button>
+          <Button
+            size="sm"
+            onClick={() => navigate(`/admin/courses/${courseId}/units/${unitId}/lessons/${lessonId}/page`)}
+          >
+            <SquarePlus className="h-4 w-4 mr-2" />
+            Modify Content
+          </Button>
+        </div>
+      </div>
+    </div>
+  );
+}
+
+// ─── Page ─────────────────────────────────────────────────────────────────────
+
 export default function ViewLesson() {
   const navigate = useNavigate();
   const { courseId, unitId, lessonId } = useParams();
-  const { fetchLesson, course, unit } = useCourses();
+  const { fetchLesson } = useCourses();
   const { fmtDate } = useDateFormat();
   const [lesson, setLesson] = useState(null);
   const [initializing, setInitializing] = useState(true);
+  const [activeTab, setActiveTab] = useState("details");
 
   useEffect(() => {
     (async () => {
@@ -59,70 +184,43 @@ export default function ViewLesson() {
                 <p className="text-sm text-muted-foreground">Lesson details.</p>
               </div>
             </div>
-            <Button
-              type="button"
-              onClick={() => navigate(`/admin/courses/${courseId}/units/${unitId}/lessons/${lessonId}/edit`)}
-            >
-              <Pencil className="h-4 w-4 mr-2" />
-              Edit
-            </Button>
-          </div>
-
-          {/* Stats row */}
-          <div className="grid grid-cols-2 lg:grid-cols-4 gap-3">
-            <div className="bg-card rounded-lg border p-3 space-y-1">
-              <p className="text-xs text-muted-foreground uppercase tracking-wide font-medium">Order</p>
-              <p className="font-semibold text-sm">#{lesson?.order_index ?? 0}</p>
-            </div>
-            <div className="bg-card rounded-lg border p-3 space-y-1">
-              <p className="text-xs text-muted-foreground uppercase tracking-wide font-medium flex items-center gap-1">
-                <Clock className="h-3 w-3" /> Duration
-              </p>
-              <p className="font-semibold text-sm">{lesson?.duration_formatted ?? "0 mins"}</p>
-            </div>
-            <div className="bg-card rounded-lg border p-3 space-y-1">
-              <p className="text-xs text-muted-foreground uppercase tracking-wide font-medium">Created</p>
-              <p className="font-semibold text-sm">{fmtDate(lesson?.createdAt)}</p>
-            </div>
-            <div className="bg-card rounded-lg border p-3 space-y-1">
-              <p className="text-xs text-muted-foreground uppercase tracking-wide font-medium">Last Updated</p>
-              <p className="font-semibold text-sm">{fmtDate(lesson?.updatedAt)}</p>
-            </div>
-          </div>
-
-          {/* Details */}
-          <div className="rounded-lg border bg-card p-6 space-y-5">
-            <InfoField label="Title" value={lesson?.title} />
-            <InfoField label="Description" value={lesson?.description || "No description provided."} />
-            <InfoField label="Unit" value={lesson?.unit?.title} />
-          </div>
-
-          {/* Objectives */}
-          <div className="rounded-lg border bg-card p-6 space-y-4">
-            <div className="flex items-center gap-2">
-              <ListChecks className="h-4 w-4 text-muted-foreground" />
-              <p className="text-sm font-medium">Objectives</p>
-              <Badge variant="secondary" className="ml-auto">{lesson?.objectives?.length ?? 0}</Badge>
-            </div>
-
-            {lesson?.objectives?.length === 0 || !lesson?.objectives ? (
-              <p className="text-sm text-muted-foreground text-center py-4">No objectives defined.</p>
-            ) : (
-              <ul className="space-y-2">
-                {lesson.objectives.map((obj, i) => (
-                  <li key={obj.objective_id} className="flex items-start gap-3 text-sm">
-                    <span className="mt-0.5 flex h-5 w-5 shrink-0 items-center justify-center rounded-full bg-primary/10 text-primary text-xs font-medium">
-                      {i + 1}
-                    </span>
-                    <span>{obj.text}</span>
-                  </li>
-                ))}
-              </ul>
+            {activeTab === "details" && (
+              <Button
+                type="button"
+                onClick={() => navigate(`/admin/courses/${courseId}/units/${unitId}/lessons/${lessonId}/edit`)}
+              >
+                <Pencil className="h-4 w-4 mr-2" />
+                Edit
+              </Button>
             )}
           </div>
 
+          {/* Tabs */}
+          <div className="flex gap-1 pb-0 -mb-px border-b">
+            {TABS.map(({ key, label, icon: Icon }) => (
+              <button
+                key={key}
+                onClick={() => setActiveTab(key)}
+                className={[
+                  "flex items-center gap-1.5 px-4 py-2.5 text-sm font-medium border-b-2 transition-colors",
+                  activeTab === key
+                    ? "border-primary text-primary"
+                    : "border-transparent text-muted-foreground hover:text-foreground",
+                ].join(" ")}
+              >
+                <Icon className="h-3.5 w-3.5" />
+                {label}
+              </button>
+            ))}
+          </div>
+
+          {activeTab === "details" && <LessonDetailsTab lesson={lesson} fmtDate={fmtDate} />}
+          {activeTab === "content" && (
+            <LessonContentTab lesson={lesson} courseId={courseId} unitId={unitId} lessonId={lessonId} />
+          )}
+
         </div>
       </div>
     </section>
   );
-}
+}

src/modules/admin/pages/courses/units/ViewUnit.jsx

@@ -1,18 +1,123 @@
 import { useEffect, useState } from "react";
 import { useNavigate, useParams } from "react-router-dom";
-import { House, Pencil, ArrowLeft } from "lucide-react";
+import {
+  Pencil, ArrowLeft, Info, BookCheck, ClipboardList, NotebookPen, Eye, HelpCircle,
+} from "lucide-react";
 
 import { useCourses } from "@/contexts/AdminCoursesContext";
 import { PageMeta } from "@/contexts/MetadataContext";
 import { Button } from "@/components/ui/button";
 import { Spinner } from "@/components/ui/spinner";
+import { Skeleton } from "@/components/ui/skeleton";
+import LessonsTable from "../../../components/courses/LessonsTable";
+
+// ─── Tabs ─────────────────────────────────────────────────────────────────────
+
+const TABS = [
+  { key: "details", label: "Unit Details", icon: Info },
+  { key: "lessons", label: "Lessons",      icon: BookCheck },
+  { key: "quiz",    label: "Quiz",         icon: ClipboardList },
+];
+
+const WIDE_TABS = new Set(["lessons"]);
+
+// ─── Details tab ──────────────────────────────────────────────────────────────
+
+function UnitDetailsTab({ unit }) {
+  return (
+    <div className="rounded-lg border bg-card p-6 space-y-5">
+      <div className="space-y-1">
+        <p className="text-xs text-muted-foreground uppercase tracking-wide font-medium">Title</p>
+        <p className="text-sm font-medium">{unit?.title ?? "—"}</p>
+      </div>
+
+      <div className="space-y-1">
+        <p className="text-xs text-muted-foreground uppercase tracking-wide font-medium">Description</p>
+        <p className="text-sm text-muted-foreground">{unit?.description || "No description provided."}</p>
+      </div>
+
+      <div className="space-y-1">
+        <p className="text-xs text-muted-foreground uppercase tracking-wide font-medium">Order</p>
+        <p className="text-sm font-medium">{unit?.order ?? 0}</p>
+      </div>
+    </div>
+  );
+}
+
+// ─── Quiz tab ─────────────────────────────────────────────────────────────────
+
+function UnitQuizTab({ courseId, unitId }) {
+  const navigate = useNavigate();
+  const { fetchQuiz, quiz, loading } = useCourses();
+
+  useEffect(() => {
+    fetchQuiz(courseId, unitId);
+  }, [courseId, unitId]);
+
+  if (loading && !quiz) {
+    return <Skeleton className="h-32 w-full rounded-lg" />;
+  }
+
+  if (!quiz) {
+    return (
+      <div className="rounded-lg border border-dashed bg-card p-12 flex flex-col items-center gap-3 text-center">
+        <HelpCircle className="h-8 w-8 text-muted-foreground/40" />
+        <p className="text-sm text-muted-foreground">No quiz has been created for this unit yet.</p>
+        <Button
+          size="sm"
+          variant="outline"
+          onClick={() => navigate(`/admin/courses/${courseId}/units/${unitId}/quiz/edit`)}
+        >
+          <NotebookPen className="h-4 w-4 mr-2" />
+          Create Quiz
+        </Button>
+      </div>
+    );
+  }
+
+  const questions = quiz.questions ?? [];
+  const totalPoints = questions.reduce((sum, q) => sum + (q.points ?? 1), 0);
+
+  return (
+    <div className="rounded-lg border bg-card p-6 space-y-4">
+      <div className="flex items-center justify-between gap-4 flex-wrap">
+        <div>
+          <p className="text-sm font-medium">{quiz.title || "Unit Quiz"}</p>
+          <p className="text-xs text-muted-foreground">
+            {questions.length} question{questions.length !== 1 ? "s" : ""} · {totalPoints} total point{totalPoints !== 1 ? "s" : ""}
+          </p>
+        </div>
+        <div className="flex items-center gap-2">
+          <Button
+            size="sm"
+            variant="outline"
+            onClick={() => navigate(`/admin/courses/${courseId}/units/${unitId}/quiz/view`)}
+          >
+            <Eye className="h-4 w-4 mr-2" />
+            View Quiz
+          </Button>
+          <Button
+            size="sm"
+            onClick={() => navigate(`/admin/courses/${courseId}/units/${unitId}/quiz/edit`)}
+          >
+            <NotebookPen className="h-4 w-4 mr-2" />
+            Modify Quiz
+          </Button>
+        </div>
+      </div>
+    </div>
+  );
+}
+
+// ─── Page ─────────────────────────────────────────────────────────────────────
 
 export default function ViewUnit() {
   const navigate = useNavigate();
   const { courseId, unitId } = useParams();
-  const { fetchUnit, course } = useCourses();
+  const { fetchUnit } = useCourses();
   const [unit, setUnit] = useState(null);
   const [initializing, setInitializing] = useState(true);
+  const [activeTab, setActiveTab] = useState("details");
 
   useEffect(() => {
     (async () => {
@@ -33,11 +138,10 @@ export default function ViewUnit() {
   return (
     <section className="bg-muted h-full">
       <PageMeta title={unit ? `${unit.title} - STARR` : undefined} />
-      <div className="lg:container lg:mx-auto lg:px-0 flex flex-col items-center px-4 py-10">
 
-        <div className="w-full max-w-2xl">
-
-          <div className="flex items-center justify-between mb-6">
+      <div className="sticky z-20 shrink-0 border-b bg-white/70 dark:bg-zinc-900/70 backdrop-blur-md" style={{ top: "var(--navbar-h)" }}>
+        <div className="lg:container lg:mx-auto lg:px-6 px-4">
+          <div className="flex items-center justify-between py-3">
             <div className="flex items-center gap-3">
               <Button type="button" variant="ghost" size="icon" onClick={() => navigate(`/admin/courses/${courseId}/units`)}>
                 <ArrowLeft className="h-4 w-4" />
@@ -47,35 +151,44 @@ export default function ViewUnit() {
                 <p className="text-sm text-muted-foreground">View unit information.</p>
               </div>
             </div>
-            <Button
-              type="button"
-              onClick={() => navigate(`/admin/courses/${courseId}/units/${unitId}/edit`)}
-            >
-              <Pencil className="h-4 w-4 mr-2" />
-              Edit
-            </Button>
+            {activeTab === "details" && (
+              <Button
+                type="button"
+                onClick={() => navigate(`/admin/courses/${courseId}/units/${unitId}/edit`)}
+              >
+                <Pencil className="h-4 w-4 mr-2" />
+                Edit
+              </Button>
+            )}
           </div>
 
-          <div className="rounded-lg border bg-card p-6 space-y-5">
-
-            <div className="space-y-1">
-              <p className="text-xs text-muted-foreground uppercase tracking-wide font-medium">Title</p>
-              <p className="text-sm font-medium">{unit?.title ?? "—"}</p>
-            </div>
-
-            <div className="space-y-1">
-              <p className="text-xs text-muted-foreground uppercase tracking-wide font-medium">Description</p>
-              <p className="text-sm text-muted-foreground">{unit?.description || "No description provided."}</p>
-            </div>
-
-            <div className="space-y-1">
-              <p className="text-xs text-muted-foreground uppercase tracking-wide font-medium">Order</p>
-              <p className="text-sm font-medium">{unit?.order ?? 0}</p>
-            </div>
-
+          <div className="flex gap-1 pb-0 -mb-px">
+            {TABS.map(({ key, label, icon: Icon }) => (
+              <button
+                key={key}
+                onClick={() => setActiveTab(key)}
+                className={[
+                  "flex items-center gap-1.5 px-4 py-2.5 text-sm font-medium border-b-2 transition-colors",
+                  activeTab === key
+                    ? "border-primary text-primary"
+                    : "border-transparent text-muted-foreground hover:text-foreground",
+                ].join(" ")}
+              >
+                <Icon className="h-3.5 w-3.5" />
+                {label}
+              </button>
+            ))}
           </div>
         </div>
       </div>
+
+      <div className="lg:container lg:mx-auto lg:px-6 px-4 py-6">
+        <div className={WIDE_TABS.has(activeTab) ? "pb-16" : "max-w-2xl mx-auto pb-16"}>
+          {activeTab === "details" && <UnitDetailsTab unit={unit} />}
+          {activeTab === "lessons" && <LessonsTable courseId={courseId} unitId={unitId} />}
+          {activeTab === "quiz" && <UnitQuizTab courseId={courseId} unitId={unitId} />}
+        </div>
+      </div>
     </section>
   );
-}
+}