UiPath · petervachon · May 11, 2026
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+"use client";
+
+import { Upload, X } from "lucide-react";
+import { useEffect, useRef, useState } from "react";
+import { toast } from "sonner";
+import { Button } from "@/components/ui/button";
+import { Card } from "@/components/ui/card";
+import { Collapsible, CollapsibleContent } from "@/components/ui/collapsible";
+import { Input } from "@/components/ui/input";
+import { Label } from "@/components/ui/label";
+import {
+  PageHeader,
+  PageHeaderDescription,
+  PageHeaderTitle,
+} from "@/components/ui/page-header";
+import { Spinner } from "@/components/ui/spinner";
+import {
+  brandingStore,
+  type ThemeMode,
+  useBrandingHasChanges,
+  useBrandingStore,
+} from "./branding-store";
+import { hexToOklchString, toHexForPicker } from "./color-utils";
+
+const DEFAULT_PRIMARY_COLOR = "oklch(0.64 0.115 208)";
+const DEFAULT_ACCENT_COLOR = "oklch(0.78 0.112 207.1)";
+
+const COLOR_FIELDS = [
+  {
+    key: "primaryColor" as const,
+    label: "Primary",
+    defaultValue: DEFAULT_PRIMARY_COLOR,
+  },
+  {
+    key: "accentColor" as const,
+    label: "Accent",
+    defaultValue: DEFAULT_ACCENT_COLOR,
+  },
+];
+
+export function CustomizeAppearance() {
+  const fileInputRef = useRef<HTMLInputElement>(null);
+  const branding = useBrandingStore();
+  const hasChanges = useBrandingHasChanges();
+  const [isSaving, setIsSaving] = useState(false);
+
+  useEffect(() => {
+    void brandingStore.hydrate();
+  }, []);
+
+  useEffect(() => {
+    if (!hasChanges) return;
+    const handleBeforeUnload = (e: BeforeUnloadEvent) => {
+      e.preventDefault();
+    };
+    window.addEventListener("beforeunload", handleBeforeUnload);
+    return () => window.removeEventListener("beforeunload", handleBeforeUnload);
+  }, [hasChanges]);
+
+  const isCustom = branding.themeMode === "custom";
+  const hasLogo = !!branding.logoUrl;
+  const hasAnyCustomization =
+    isCustom ||
+    !!branding.primaryColor ||
+    !!branding.accentColor ||
+    hasLogo ||
+    !!branding.appTitle;
+
+  const handleFieldChange = (key: keyof typeof branding, value: string) => {
+    brandingStore.setCurrent({ [key]: value });
+  };
+
+  const handleModeChange = (mode: ThemeMode) => {
+    if (mode === branding.themeMode) return;
+
+    if (mode === "default") {
+      brandingStore.setCurrent({
+        themeMode: mode,
+        primaryColor: "",
+        accentColor: "",
+      });
+    } else {
+      brandingStore.setCurrent({
+        themeMode: mode,
+        primaryColor: branding.primaryColor || DEFAULT_PRIMARY_COLOR,
+        accentColor: branding.accentColor || DEFAULT_ACCENT_COLOR,
+      });
+    }
+  };
+
+  const handleLogoUpload = async (e: React.ChangeEvent<HTMLInputElement>) => {
+    const file = e.target.files?.[0];
+    if (!file) return;
+
+    if (file.size > 10 * 1024 * 1024) {
+      toast.error("Logo file is too large", {
+        description: "Maximum size is 10MB.",
+      });
+      return;
+    }
+
+    if (file.size > 500 * 1024) {
+      toast.warning("Large logo file", {
+        description:
+          "Consider using a smaller image (under 500KB) for better performance.",
+      });
+    }
+
+    try {
+      await brandingStore.stageLogo(file);
+    } catch (error) {
+      toast.error("Failed to read logo file", {
+        description:
+          error instanceof Error ? error.message : "Please try again.",
+      });
+    }
+  };
+
+  const handleRemoveLogo = () => {
+    brandingStore.removeLogo();
+  };
+
+  const handleSave = async () => {
+    setIsSaving(true);
+    try {
+      await brandingStore.save();
+      toast.success("Settings saved", {
+        description: "Your appearance changes have been applied.",
+      });
+    } catch (error) {
+      toast.error("Failed to save settings", {
+        description:
+          error instanceof Error ? error.message : "Please try again.",
+      });
+    } finally {
+      setIsSaving(false);
+    }
+  };
+
+  const handleReset = async () => {
+    setIsSaving(true);
+    try {
+      await brandingStore.reset();
+      toast.success("Defaults restored", {
+        description: "Appearance has been reset to defaults.",
+      });
+    } catch (error) {
+      toast.error("Failed to reset settings", {
+        description:
+          error instanceof Error ? error.message : "Please try again.",
+      });
+    } finally {
+      setIsSaving(false);
+    }
+  };
+
+  return (
+    <div className="@container px-4 sm:px-6 lg:px-8 py-6">
+      <PageHeader size="content">
+        <PageHeaderTitle>Customize appearance</PageHeaderTitle>
+        <PageHeaderDescription className="text-sm">
+          Changes to the appearance apply to all users in your organization
+        </PageHeaderDescription>
+      </PageHeader>
+
+      <div className="grid grid-cols-4 @md:grid-cols-8 @3xl:grid-cols-12 gap-x-4 gap-y-8 mt-6">
+        <div className="col-span-4 @md:col-span-8 @3xl:col-span-7 space-y-2">
+          <Label>Company logo</Label>
+          <div className="relative w-16 h-16 group/logo">
+            <button
+              type="button"
+              onClick={() => fileInputRef.current?.click()}
+              className="w-full h-full border-2 border-dashed border-border rounded-lg overflow-hidden flex items-center justify-center bg-muted cursor-pointer hover:bg-muted/80 transition-colors"
+            >
+              {hasLogo ? (
+                <img
+                  src={branding.logoUrl}
+                  alt={branding.logoAlt || "Logo preview"}
+                  className="max-w-full max-h-full object-contain"
+                />
+              ) : (
+                <Upload className="h-5 w-5 text-muted-foreground" />
+              )}
+            </button>
+            {hasLogo && (
+              <button
+                type="button"
+                onClick={handleRemoveLogo}
+                className="absolute -top-2 -right-2 w-5 h-5 rounded-full bg-destructive text-destructive-foreground flex items-center justify-center opacity-0 group-hover/logo:opacity-100 transition-opacity hover:bg-destructive/90"
+                aria-label="Remove logo"
+              >
+                <X className="h-3 w-3" />
+              </button>
+            )}
+          </div>
+          <input
+            ref={fileInputRef}
+            type="file"
+            accept="image/*"
+            onChange={(e) => {
+              void handleLogoUpload(e);
+            }}
+            className="hidden"
+          />
+          <p className="text-xs text-muted-foreground">
+            PNG or SVG, under 500KB recommended
+          </p>
+        </div>
+
+        <div className="col-span-4 @md:col-span-8 @3xl:col-span-7 space-y-2">
+          <Label htmlFor="app-title">Company name</Label>
+          <Input
+            id="app-title"
+            type="text"
+            value={branding.appTitle}
+            onChange={(e) => handleFieldChange("appTitle", e.target.value)}
+            placeholder="Enter company name..."
+            className="max-w-sm"
+          />
+        </div>
+
+        <div className="col-span-4 @md:col-span-8 @3xl:col-span-7">
+          <Label>Theming</Label>
+          <p className="text-sm text-muted-foreground mt-1">
+            Choose between built-in themes or a custom theme
+          </p>
+        </div>
+
+        <div className="col-span-4 @md:col-span-4 @3xl:col-span-3 @3xl:col-start-1">
+          <Card
+            selectable="standard"
+            selected={!isCustom}
+            onClick={() => handleModeChange("default")}
+          >
+            <span className="text-base font-semibold text-foreground mb-1">
+              Default themes
+            </span>
+            <p className="text-sm text-muted-foreground leading-relaxed">
+              Light, dark, and system preference.
+            </p>
+          </Card>
+        </div>
+
+        <div className="col-span-4 @md:col-span-4 @3xl:col-span-3">
+          <Card
+            selectable="standard"
+            selected={isCustom}
+            onClick={() => handleModeChange("custom")}
+          >
+            <span className="text-base font-semibold text-foreground mb-1">
+              Custom theme
+            </span>
+            <p className="text-sm text-muted-foreground leading-relaxed">
+              Apply your brand colors. Light theme only.
+            </p>
+          </Card>
+        </div>
+
+        <Collapsible
+          className="col-span-4 @md:col-span-8 @3xl:col-span-6 @3xl:col-start-1"
+          open={isCustom}
+        >
+          <CollapsibleContent className="transition-opacity duration-200 data-[state=closed]:opacity-0 data-[state=open]:opacity-100">
+            <div className="grid grid-cols-2 gap-4 pt-1">
+              {COLOR_FIELDS.map(({ key, label, defaultValue }) => {
+                const rawValue = branding[key];
+                const displayValue = rawValue || defaultValue;
+                const hexForPicker = toHexForPicker(displayValue);
+
+                return (
+                  <div key={key} className="space-y-1.5">
+                    <Label htmlFor={key}>{label}</Label>
+                    <div className="relative">
+                      <input
+                        type="color"
+                        value={hexForPicker}
+                        className="absolute left-1.5 top-1/2 -translate-y-1/2 w-6 h-6 rounded cursor-pointer border-0 p-0 [&::-webkit-color-swatch-wrapper]:p-0 [&::-webkit-color-swatch]:rounded [&::-webkit-color-swatch]:border-0 [&::-moz-color-swatch]:rounded [&::-moz-color-swatch]:border-0"
+                        onChange={(e) =>
+                          handleFieldChange(
+                            key,
+                            hexToOklchString(e.target.value),
+                          )
+                        }
+                        title={`Pick ${label.toLowerCase()} color`}
+                      />
+                      <Input
+                        id={key}
+                        value={displayValue}
+                        onChange={(e) => handleFieldChange(key, e.target.value)}
+                        className="text-sm pl-10"
+                        placeholder={defaultValue}
+                      />
+                    </div>
+                  </div>
+                );
+              })}
+            </div>
+          </CollapsibleContent>
+        </Collapsible>
+
+        <div className="col-span-4 @md:col-span-8 @3xl:col-span-6 @3xl:col-start-1 flex items-center justify-end gap-3">
+          <Button
+            variant="outline"
+            onClick={() => {
+              void handleReset();
+            }}
+            disabled={isSaving || !hasAnyCustomization}
+          >
+            Reset to defaults
+          </Button>
+          <Button
+            onClick={() => {
+              void handleSave();
+            }}
+            disabled={!hasChanges || isSaving}
+          >
+            {isSaving ? (
+              <>
+                <Spinner className="mr-2" />
+                Saving...
+              </>
+            ) : (
+              "Save changes"
+            )}
+          </Button>
+        </div>
+      </div>
+    </div>
+  );
+}
@@ -0,0 +1,43 @@
+"use client";
+
+import { useEffect, useRef } from "react";
+import { useTheme } from "@/registry/shell/shell-theme-provider";
+import { useBrandingStore } from "./branding-store";
+
+const PREVIOUS_THEME_KEY = "vertex-branding-previous-theme";
+
+// Custom brand colors are calibrated for the light palette (the primary ramp
+// generator targets light-mode lightness values). In dark mode the ramp
+// renders against dark chrome and looks wrong. This hook locks the app to
+// light mode whenever the user selects a custom theme and restores their
+// previous theme when they switch back to the default themes.
+//
+// Call from your app root, inside the ThemeProvider:
+//
+//   function App() {
+//     useBrandingThemeEnforcer();
+//     return <YourRoutes />;
+//   }
+export function useBrandingThemeEnforcer() {
+  const { themeMode } = useBrandingStore();
+  const { theme, setTheme } = useTheme();
+  const prevMode = useRef(themeMode);
+
+  useEffect(() => {
+    if (themeMode === "custom") {
+      if (prevMode.current !== "custom" && typeof window !== "undefined") {
+        window.localStorage.setItem(PREVIOUS_THEME_KEY, theme);
+      }
+      if (theme !== "light") {
+        setTheme("light");
+      }
+    } else if (prevMode.current === "custom" && typeof window !== "undefined") {
+      const saved = window.localStorage.getItem(PREVIOUS_THEME_KEY);
+      if (saved === "light" || saved === "dark" || saved === "system") {
+        setTheme(saved);
+        window.localStorage.removeItem(PREVIOUS_THEME_KEY);
+      }
+    }
+    prevMode.current = themeMode;
+  }, [themeMode, theme, setTheme]);
+}