feat(mui): migrate Warehouse overview + replace residual admin-loading loaders with LoadingState

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/admin/pages/Offers.tsx

@@ -34,6 +34,7 @@ import {
   FilterBar,
   Tabs,
   PageHeader,
+  LoadingState,
   type DataColumn,
   type TabDef,
 } from "../ui";
@@ -450,11 +451,7 @@ export default function Offers() {
   };
 
   if (isPending) {
-    return (
-      <div className="admin-loading">
-        <div className="admin-spinner" />
-      </div>
-    );
+    return <LoadingState />;
   }
 
   const total = pagination?.total ?? quotations.length;

src/admin/pages/PlanWork.tsx

@@ -15,7 +15,7 @@ import PlanGrid from "../components/PlanGrid";
 import PlanCellModal from "../components/PlanCellModal";
 import PlanCategoriesModal from "../components/PlanCategoriesModal";
 import Forbidden from "../components/Forbidden";
-import { Button, Alert } from "../ui";
+import { Button, Alert, LoadingState } from "../ui";
 import { projectListOptions, type Project } from "../lib/queries/projects";
 import { planCategoriesOptions, type PlanCategory } from "../lib/queries/plan";
 // plan.css is imported once globally in AdminApp.tsx — no per-page re-import.
@@ -670,11 +670,7 @@ export default function PlanWork() {
         </Box>
       </motion.div>
 
-      {gridLoading && (
-        <div className="admin-loading">
-          <div className="admin-spinner" />
-        </div>
-      )}
+      {gridLoading && <LoadingState />}
 
       {/*
         Grid entrance: same pattern as the h1 / banner / toolbar above

src/admin/pages/Projects.tsx

@@ -31,6 +31,7 @@ import {
   DateField,
   StatusChip,
   CheckboxField,
+  LoadingState,
   type DataColumn,
 } from "../ui";
 
@@ -234,11 +235,7 @@ export default function Projects() {
   };
 
   if (isPending) {
-    return (
-      <div className="admin-loading">
-        <div className="admin-spinner" />
-      </div>
-    );
+    return <LoadingState />;
   }
 
   const columns: DataColumn<Project>[] = [

src/admin/pages/Users.tsx

@@ -25,6 +25,7 @@ import {
   SwitchField,
   Select,
   StatusChip,
+  LoadingState,
   type DataColumn,
 } from "../ui";
 
@@ -247,11 +248,7 @@ export default function Users() {
   };
 
   if (isPending) {
-    return (
-      <div className="admin-loading">
-        <div className="admin-spinner" />
-      </div>
-    );
+    return <LoadingState />;
   }
 
   const columns: DataColumn<User>[] = [

src/admin/pages/Vehicles.tsx

@@ -20,6 +20,7 @@ import {
   Field,
   TextField,
   SwitchField,
+  LoadingState,
   type DataColumn,
 } from "../ui";
 
@@ -222,11 +223,7 @@ export default function Vehicles() {
   };
 
   if (isPending) {
-    return (
-      <div className="admin-loading">
-        <div className="admin-spinner" />
-      </div>
-    );
+    return <LoadingState />;
   }
 
   const columns: DataColumn<Vehicle>[] = [

src/admin/pages/Warehouse.tsx

@@ -1,32 +1,89 @@
-import { Link } from "react-router-dom";
+import { Link as RouterLink } from "react-router-dom";
 import { useQuery } from "@tanstack/react-query";
+import { motion } from "framer-motion";
+import Box from "@mui/material/Box";
+import Typography from "@mui/material/Typography";
 import { useAuth } from "../context/AuthContext";
 import Forbidden from "../components/Forbidden";
-import { motion } from "framer-motion";
 import {
   warehouseStockStatusOptions,
   warehouseBelowMinimumOptions,
   warehouseReservationListOptions,
   warehouseMovementLogOptions,
   type WarehouseItem,
-  type WarehouseReservation,
 } from "../lib/queries/warehouse";
 import { formatCurrency, formatDate } from "../utils/formatters";
-import useReducedMotion from "../hooks/useReducedMotion";
+import {
+  Button,
+  Card,
+  DataTable,
+  StatCard,
+  StatusChip,
+  EmptyState,
+  LoadingState,
+  PageHeader,
+  type DataColumn,
+  type StatCardColor,
+} from "../ui";
 
 const TYPE_LABEL: Record<string, string> = {
   receipt: "Příjem",
   issue: "Výdej",
 };
 
-const TYPE_TONE: Record<string, string> = {
-  receipt: "admin-badge-incoming",
-  issue: "admin-badge-outgoing",
+// Movement type → StatusChip color (legacy: incoming=success, outgoing=info)
+const TYPE_COLOR: Record<string, "success" | "info"> = {
+  receipt: "success",
+  issue: "info",
 };
 
+const ReceiptIcon = (
+  <svg
+    width="18"
+    height="18"
+    viewBox="0 0 24 24"
+    fill="none"
+    stroke="currentColor"
+    strokeWidth="2"
+  >
+    <polyline points="17 11 12 6 7 11" />
+    <line x1="12" y1="6" x2="12" y2="18" />
+  </svg>
+);
+
+const IssueIcon = (
+  <svg
+    width="18"
+    height="18"
+    viewBox="0 0 24 24"
+    fill="none"
+    stroke="currentColor"
+    strokeWidth="2"
+  >
+    <polyline points="7 13 12 18 17 13" />
+    <line x1="12" y1="18" x2="12" y2="6" />
+  </svg>
+);
+
+interface BelowMinRow {
+  id: number;
+  name: string;
+  available_quantity: number;
+  min_quantity: number;
+}
+
+interface MovementRow {
+  _idx: number;
+  date: string;
+  type: string;
+  document_number: string;
+  item_name: string;
+  quantity: number;
+  supplier_or_project: string;
+}
+
 export default function Warehouse() {
   const { hasPermission } = useAuth();
-  const reducedMotion = useReducedMotion();
 
   const { data: stockItems, isPending: stockPending } = useQuery(
     warehouseStockStatusOptions(),
@@ -60,253 +117,270 @@ export default function Warehouse() {
   const isLoading =
     stockPending || belowMinPending || reservationsPending || movementsLoading;
 
+  const belowMinColor: StatCardColor =
+    belowMinimumCount > 0 ? "error" : "warning";
+
+  const belowMinColumns: DataColumn<BelowMinRow>[] = [
+    {
+      key: "name",
+      header: "Název",
+      width: "50%",
+      bold: true,
+      render: (item) => item.name,
+    },
+    {
+      key: "available_quantity",
+      header: "K dispozici",
+      width: "25%",
+      mono: true,
+      render: (item) => String(item.available_quantity),
+    },
+    {
+      key: "min_quantity",
+      header: "Min. množství",
+      width: "25%",
+      mono: true,
+      render: (item) => String(item.min_quantity),
+    },
+  ];
+
+  const movementColumns: DataColumn<MovementRow>[] = [
+    {
+      key: "date",
+      header: "Datum",
+      width: "12%",
+      mono: true,
+      render: (row) => formatDate(row.date),
+    },
+    {
+      key: "type",
+      header: "Typ",
+      width: "12%",
+      render: (row) => (
+        <StatusChip
+          label={TYPE_LABEL[row.type] ?? row.type}
+          color={TYPE_COLOR[row.type] ?? "info"}
+        />
+      ),
+    },
+    {
+      key: "document_number",
+      header: "Doklad",
+      width: "16%",
+      mono: true,
+      render: (row) => row.document_number || "—",
+    },
+    {
+      key: "item_name",
+      header: "Položka",
+      width: "28%",
+      bold: true,
+      render: (row) => row.item_name,
+    },
+    {
+      key: "quantity",
+      header: "Množství",
+      width: "12%",
+      mono: true,
+      render: (row) => String(row.quantity),
+    },
+    {
+      key: "supplier_or_project",
+      header: "Dodavatel / Projekt",
+      width: "20%",
+      render: (row) => row.supplier_or_project || "—",
+    },
+  ];
+
   return (
-    <div>
+    <Box>
       <motion.div
-        className="admin-page-header"
         initial={{ opacity: 0, y: 12 }}
         animate={{ opacity: 1, y: 0 }}
         transition={{ duration: 0.25 }}
       >
-        <div>
-          <h1 className="admin-page-title">Sklad</h1>
-          <p className="admin-page-subtitle">Přehled skladových zásob</p>
-        </div>
-        <div className="admin-page-actions">
-          {hasPermission("warehouse.operate") && (
-            <>
-              <Link
-                to="/warehouse/receipts/new"
-                className="admin-btn admin-btn-primary"
-              >
-                <svg
-                  width="18"
-                  height="18"
-                  viewBox="0 0 24 24"
-                  fill="none"
-                  stroke="currentColor"
-                  strokeWidth="2"
+        <PageHeader
+          title="Sklad"
+          subtitle="Přehled skladových zásob"
+          actions={
+            <Box sx={{ display: "flex", gap: 1.5, flexWrap: "wrap" }}>
+              {hasPermission("warehouse.operate") && (
+                <>
+                  <Button
+                    component={RouterLink}
+                    to="/warehouse/receipts/new"
+                    startIcon={ReceiptIcon}
+                  >
+                    Nový příjem
+                  </Button>
+                  <Button
+                    component={RouterLink}
+                    to="/warehouse/issues/new"
+                    variant="outlined"
+                    color="inherit"
+                    startIcon={IssueIcon}
+                  >
+                    Nový výdej
+                  </Button>
+                </>
+              )}
+              {hasPermission("warehouse.manage") && (
+                <Button
+                  component={RouterLink}
+                  to="/warehouse/categories"
+                  variant="outlined"
+                  color="inherit"
                 >
-                  <polyline points="17 11 12 6 7 11" />
-                  <line x1="12" y1="6" x2="12" y2="18" />
-                </svg>
-                Nový příjem
-              </Link>
-              <Link
-                to="/warehouse/issues/new"
-                className="admin-btn admin-btn-secondary"
+                  Kategorie
+                </Button>
+              )}
+              <Button
+                component={RouterLink}
+                to="/warehouse/items"
+                variant="outlined"
+                color="inherit"
               >
-                <svg
-                  width="18"
-                  height="18"
-                  viewBox="0 0 24 24"
-                  fill="none"
-                  stroke="currentColor"
-                  strokeWidth="2"
-                >
-                  <polyline points="7 13 12 18 17 13" />
-                  <line x1="12" y1="18" x2="12" y2="6" />
-                </svg>
-                Nový výdej
-              </Link>
-            </>
-          )}
-          {hasPermission("warehouse.manage") && (
-            <Link
-              to="/warehouse/categories"
-              className="admin-btn admin-btn-secondary"
-            >
-              Kategorie
-            </Link>
-          )}
-          <Link to="/warehouse/items" className="admin-btn admin-btn-secondary">
-            Položky
-          </Link>
-          <Link
-            to="/warehouse/reports"
-            className="admin-btn admin-btn-secondary"
-          >
-            Reporty
-          </Link>
-        </div>
+                Položky
+              </Button>
+              <Button
+                component={RouterLink}
+                to="/warehouse/reports"
+                variant="outlined"
+                color="inherit"
+              >
+                Reporty
+              </Button>
+            </Box>
+          }
+        />
       </motion.div>
 
       {/* KPI cards */}
-      <div className="admin-kpi-grid admin-kpi-4">
-        <motion.div
-          className="admin-stat-card info"
-          initial={{ opacity: 0, y: 12 }}
-          animate={{ opacity: 1, y: 0 }}
-          transition={{
-            duration: reducedMotion ? 0 : 0.25,
-            delay: reducedMotion ? 0 : 0.06,
-          }}
-        >
-          <div className="admin-stat-label">Celkem položek</div>
-          <div className="admin-stat-value admin-mono">
-            {isLoading ? "—" : totalItems}
-          </div>
-        </motion.div>
-
-        <motion.div
-          className="admin-stat-card success"
-          initial={{ opacity: 0, y: 12 }}
-          animate={{ opacity: 1, y: 0 }}
-          transition={{
-            duration: reducedMotion ? 0 : 0.25,
-            delay: reducedMotion ? 0 : 0.08,
-          }}
-        >
-          <div className="admin-stat-label">Hodnota zásob</div>
-          <div className="admin-stat-value admin-mono">
-            {isLoading ? "—" : formatCurrency(totalStockValue, "CZK")}
-          </div>
-        </motion.div>
-
-        <motion.div
-          className={`admin-stat-card ${belowMinimumCount > 0 ? "danger" : "warning"}`}
-          initial={{ opacity: 0, y: 12 }}
-          animate={{ opacity: 1, y: 0 }}
-          transition={{
-            duration: reducedMotion ? 0 : 0.25,
-            delay: reducedMotion ? 0 : 0.1,
-          }}
-        >
-          <div className="admin-stat-label">Pod minimem</div>
-          <div className="admin-stat-value admin-mono">
-            {isLoading ? "—" : belowMinimumCount}
-          </div>
-        </motion.div>
-
-        <motion.div
-          className="admin-stat-card info"
-          initial={{ opacity: 0, y: 12 }}
-          animate={{ opacity: 1, y: 0 }}
-          transition={{
-            duration: reducedMotion ? 0 : 0.25,
-            delay: reducedMotion ? 0 : 0.12,
-          }}
-        >
-          <div className="admin-stat-label">Aktivní rezervace</div>
-          <div className="admin-stat-value admin-mono">
-            {isLoading ? "—" : activeReservationCount}
-          </div>
-        </motion.div>
-      </div>
+      <Box
+        component={motion.div}
+        initial={{ opacity: 0, y: 12 }}
+        animate={{ opacity: 1, y: 0 }}
+        transition={{ duration: 0.25, delay: 0.06 }}
+        sx={{
+          display: "grid",
+          gridTemplateColumns: {
+            xs: "1fr",
+            sm: "repeat(2, 1fr)",
+            lg: "repeat(4, 1fr)",
+          },
+          gap: 2,
+          mb: 3,
+        }}
+      >
+        <StatCard
+          color="info"
+          label="Celkem položek"
+          value={isLoading ? "—" : totalItems}
+        />
+        <StatCard
+          color="success"
+          label="Hodnota zásob"
+          value={isLoading ? "—" : formatCurrency(totalStockValue, "CZK")}
+        />
+        <StatCard
+          color={belowMinColor}
+          label="Pod minimem"
+          value={isLoading ? "—" : belowMinimumCount}
+        />
+        <StatCard
+          color="info"
+          label="Aktivní rezervace"
+          value={isLoading ? "—" : activeReservationCount}
+        />
+      </Box>
 
       {/* Below minimum alert */}
       {belowMin.length > 0 && (
-        <motion.div
-          className="admin-card admin-card-danger"
+        <Box
+          component={motion.div}
           initial={{ opacity: 0, y: 12 }}
           animate={{ opacity: 1, y: 0 }}
-          transition={{
-            duration: reducedMotion ? 0 : 0.25,
-            delay: reducedMotion ? 0 : 0.14,
-          }}
+          transition={{ duration: 0.25, delay: 0.14 }}
+          sx={{ mb: 3 }}
         >
-          <div className="admin-card-header flex-between">
-            <h2 className="admin-card-title" style={{ color: "var(--danger)" }}>
-              Položky pod minimem
-            </h2>
-            <Link
-              to="/warehouse/reports"
-              className="admin-btn admin-btn-primary admin-btn-sm"
+          <Card sx={{ borderColor: "error.main", borderWidth: 1 }}>
+            <Box
+              sx={{
+                display: "flex",
+                alignItems: "center",
+                justifyContent: "space-between",
+                gap: 2,
+                flexWrap: "wrap",
+                mb: 2,
+              }}
             >
-              Reporty &rarr;
-            </Link>
-          </div>
-          <div className="admin-card-body">
-            <div className="admin-table-responsive">
-              <table className="admin-table">
-                <thead>
-                  <tr>
-                    <th>Název</th>
-                    <th>K dispozici</th>
-                    <th>Min. množství</th>
-                  </tr>
-                </thead>
-                <tbody>
-                  {belowMin.map((item) => (
-                    <tr key={item.id} className="admin-warehouse-row-danger">
-                      <td className="fw-500">{item.name}</td>
-                      <td className="admin-mono admin-warehouse-danger-value">
-                        {item.available_quantity ?? 0}
-                      </td>
-                      <td className="admin-mono">{item.min_quantity ?? 0}</td>
-                    </tr>
-                  ))}
-                </tbody>
-              </table>
-            </div>
-          </div>
-        </motion.div>
+              <Typography variant="h6" sx={{ color: "error.main" }}>
+                Položky pod minimem
+              </Typography>
+              <Button
+                component={RouterLink}
+                to="/warehouse/reports"
+                size="small"
+                sx={{ flexShrink: 0 }}
+              >
+                Reporty &rarr;
+              </Button>
+            </Box>
+            <DataTable<BelowMinRow>
+              columns={belowMinColumns}
+              rows={belowMin.map((item) => ({
+                id: item.id,
+                name: item.name,
+                available_quantity: item.available_quantity ?? 0,
+                min_quantity: item.min_quantity ?? 0,
+              }))}
+              rowKey={(item) => item.id}
+              rowDanger={() => true}
+            />
+          </Card>
+        </Box>
       )}
 
       {/* Recent movements */}
-      <motion.div
-        className="admin-card"
+      <Box
+        component={motion.div}
         initial={{ opacity: 0, y: 12 }}
         animate={{ opacity: 1, y: 0 }}
-        transition={{
-          duration: reducedMotion ? 0 : 0.25,
-          delay: reducedMotion ? 0 : 0.16,
-        }}
+        transition={{ duration: 0.25, delay: 0.16 }}
       >
-        <div className="admin-card-header flex-between">
-          <h2 className="admin-card-title">Poslední pohyby</h2>
-          <Link
-            to="/warehouse/reports"
-            className="admin-btn admin-btn-primary admin-btn-sm"
+        <Card>
+          <Box
+            sx={{
+              display: "flex",
+              alignItems: "center",
+              justifyContent: "space-between",
+              gap: 2,
+              flexWrap: "wrap",
+              mb: 2,
+            }}
           >
-            Vše &rarr;
-          </Link>
-        </div>
-        <div className="admin-card-body">
+            <Typography variant="h6">Poslední pohyby</Typography>
+            <Button
+              component={RouterLink}
+              to="/warehouse/reports"
+              size="small"
+              sx={{ flexShrink: 0 }}
+            >
+              Vše &rarr;
+            </Button>
+          </Box>
           {movementsLoading ? (
-            <div className="admin-loading">
-              <div className="admin-spinner" />
-            </div>
-          ) : recentMovements.length === 0 ? (
-            <div className="admin-empty-state">Žádné nedávné pohyby</div>
+            <LoadingState />
           ) : (
-            <div className="admin-table-responsive">
-              <table className="admin-table">
-                <thead>
-                  <tr>
-                    <th>Datum</th>
-                    <th>Typ</th>
-                    <th>Doklad</th>
-                    <th>Položka</th>
-                    <th>Množství</th>
-                    <th>Dodavatel / Projekt</th>
-                  </tr>
-                </thead>
-                <tbody>
-                  {recentMovements.map((row, i) => (
-                    <tr key={i}>
-                      <td className="admin-mono">{formatDate(row.date)}</td>
-                      <td>
-                        <span
-                          className={`admin-badge ${TYPE_TONE[row.type] ?? ""}`}
-                        >
-                          {TYPE_LABEL[row.type] ?? row.type}
-                        </span>
-                      </td>
-                      <td className="admin-mono">
-                        {row.document_number || "—"}
-                      </td>
-                      <td className="fw-500">{row.item_name}</td>
-                      <td className="admin-mono">{row.quantity}</td>
-                      <td>{row.supplier_or_project || "—"}</td>
-                    </tr>
-                  ))}
-                </tbody>
-              </table>
-            </div>
+            <DataTable<MovementRow>
+              columns={movementColumns}
+              rows={recentMovements.map((row, i) => ({ ...row, _idx: i }))}
+              rowKey={(row) => row._idx}
+              empty={<EmptyState title="Žádné nedávné pohyby" />}
+            />
           )}
-        </div>
-      </motion.div>
-    </div>
+        </Card>
+      </Box>
+    </Box>
   );
 }