fix(studio): mobile navbar layout and chat settings sheet (#4458)

* fix(studio): mobile navbar layout and chat settings sheet

* fix(studio): portal select dropdowns inside sheet modal subtree

studio/frontend/src/components/navbar.tsx

@@ -209,7 +209,7 @@ export function Navbar() {
         </div>
 
         {/* Right: mobile */}
-        <div className="flex items-center gap-2 md:hidden">
+        <div className="col-start-3 flex items-center gap-2 justify-self-end md:hidden">
           {tourId ? (
             <button
               type="button"
@@ -245,8 +245,9 @@ export function Navbar() {
                     return (
                       <span
                         key={item.href}
-                        className="rounded-md border border-border px-3 py-2 text-sm font-medium text-muted-foreground/40 cursor-not-allowed"
+                        className="flex items-center gap-2 rounded-md border border-border px-3 py-2 text-sm font-medium text-muted-foreground/40 cursor-not-allowed"
                       >
+                        <HugeiconsIcon icon={item.icon} className="size-4" />
                         {item.label}
                       </span>
                     );
@@ -257,12 +258,13 @@ export function Navbar() {
                       to={item.href}
                       onClick={() => setMobileOpen(false)}
                       className={cn(
-                        "rounded-md border px-3 py-2 text-sm font-medium",
+                        "flex items-center gap-2 rounded-md border px-3 py-2 text-sm font-medium",
                         active
                           ? "border-foreground bg-foreground text-background"
                           : "border-border text-foreground hover:bg-accent",
                       )}
                     >
+                      <HugeiconsIcon icon={item.icon} className="size-4" />
                       {item.label}
                     </Link>
                   );
@@ -271,23 +273,33 @@ export function Navbar() {
                   href="https://unsloth.ai/docs"
                   target="_blank"
                   rel="noopener noreferrer"
-                  className="mt-2 rounded-md border border-border px-3 py-2 text-sm font-medium text-foreground hover:bg-accent"
+                  className="mt-2 flex items-center gap-2 rounded-md border border-border px-3 py-2 text-sm font-medium text-foreground hover:bg-accent"
                   onClick={() => setMobileOpen(false)}
                 >
+                  <HugeiconsIcon icon={Book03Icon} className="size-4" />
                   Learn more (Docs)
                 </a>
                 {tourId ? (
                   <button
                     type="button"
-                    className="rounded-md border border-border px-3 py-2 text-left text-sm font-medium text-foreground hover:bg-accent"
+                    className="flex items-center gap-2 rounded-md border border-border px-3 py-2 text-left text-sm font-medium text-foreground hover:bg-accent"
                     onClick={() => {
                       openTour();
                       setMobileOpen(false);
                     }}
                   >
+                    <HugeiconsIcon icon={CursorInfo02Icon} className="size-4" />
                     Start tour
                   </button>
                 ) : null}
+                <div className="mt-2 flex items-center justify-between rounded-md border border-border px-3 py-2">
+                  <span className="text-sm font-medium text-foreground">Theme</span>
+                  <AnimatedThemeToggler
+                    className="flex h-8 w-8 items-center justify-center rounded-md text-muted-foreground transition-colors hover:bg-accent hover:text-foreground [&_svg]:size-4"
+                    title="Toggle theme"
+                    aria-label="Toggle theme"
+                  />
+                </div>
               </div>
             </SheetContent>
           </Sheet>

studio/frontend/src/components/ui/dialog.tsx

@@ -189,6 +189,7 @@ export {
   DialogHeader,
   DialogOverlay,
   DialogPortal,
+  DialogPortalContainerContext,
   DialogTitle,
   DialogTrigger,
 };

studio/frontend/src/components/ui/sheet.tsx

@@ -3,8 +3,10 @@
 
 import { Dialog as SheetPrimitive } from "radix-ui";
 import type * as React from "react";
+import { useState } from "react";
 
 import { Button } from "@/components/ui/button";
+import { DialogPortalContainerContext } from "@/components/ui/dialog";
 import { cn } from "@/lib/utils";
 import { Cancel01Icon } from "@hugeicons/core-free-icons";
 import { HugeiconsIcon } from "@hugeicons/react";
@@ -69,6 +71,7 @@ function SheetContent({
   overlayClassName?: string;
   overlayPosition?: "fixed" | "absolute";
 }) {
+  const [contentEl, setContentEl] = useState<HTMLDivElement | null>(null);
   return (
     <SheetPortal container={container ?? undefined}>
       <SheetOverlay
@@ -76,6 +79,7 @@ function SheetContent({
         position={overlayPosition ?? position}
       />
       <SheetPrimitive.Content
+        ref={setContentEl}
         data-slot="sheet-content"
         data-side={side}
         className={cn(
@@ -85,7 +89,9 @@ function SheetContent({
         )}
         {...props}
       >
-        {children}
+        <DialogPortalContainerContext.Provider value={contentEl}>
+          {children}
+        </DialogPortalContainerContext.Provider>
         {showCloseButton && (
           <SheetPrimitive.Close data-slot="sheet-close" asChild>
             <Button

studio/frontend/src/features/chat/chat-page.tsx

@@ -768,6 +768,7 @@ export function ChatPage(): ReactElement {
 
         <ChatSettingsPanel
           open={settingsOpen}
+          onOpenChange={setSettingsOpen}
           params={inferenceParams}
           onParamsChange={setInferenceParams}
           autoTitle={autoTitle}

studio/frontend/src/features/chat/chat-settings-sheet.tsx

@@ -21,6 +21,14 @@ import {
 } from "@hugeicons/core-free-icons";
 import { HugeiconsIcon } from "@hugeicons/react";
 import { AnimatePresence, motion } from "motion/react";
+import {
+  Sheet,
+  SheetContent,
+  SheetDescription,
+  SheetHeader,
+  SheetTitle,
+} from "@/components/ui/sheet";
+import { useIsMobile } from "@/hooks/use-mobile";
 import type { ReactNode } from "react";
 import { useState } from "react";
 import {
@@ -151,6 +159,7 @@ function CollapsibleSection({
 
 interface ChatSettingsPanelProps {
   open: boolean;
+  onOpenChange?: (open: boolean) => void;
   params: InferenceParams;
   onParamsChange: (params: InferenceParams) => void;
   autoTitle: boolean;
@@ -160,12 +169,14 @@ interface ChatSettingsPanelProps {
 
 export function ChatSettingsPanel({
   open,
+  onOpenChange,
   params,
   onParamsChange,
   autoTitle,
   onAutoTitleChange,
   onReloadModel,
 }: ChatSettingsPanelProps) {
+  const isMobile = useIsMobile();
   const isGguf = useChatRuntimeStore((s) => s.activeGgufVariant) != null;
   const ggufContextLength = useChatRuntimeStore((s) => s.ggufContextLength);
   const kvCacheDtype = useChatRuntimeStore((s) => s.kvCacheDtype);
@@ -214,24 +225,21 @@ export function ChatSettingsPanel({
     }
   }
 
-  return (
-    <aside
-      className={`shrink-0 self-start h-[calc(100%-0.875rem)] overflow-hidden bg-muted/70 rounded-2xl corner-squircle transition-[width] duration-200 ease-linear ${open ? "w-[17rem] border-l border-sidebar-border/70" : "w-0"}`}
-    >
-      <div className="flex h-full w-[17rem] flex-col">
-        <div className="flex items-center gap-2 px-4 py-3">
-          <HugeiconsIcon
-            icon={PencilEdit01Icon}
-            className="size-4 text-muted-foreground/70"
-          />
-          <span className="flex-1 text-base font-semibold tracking-tight">
-            Configuration
-          </span>
-        </div>
+  const settingsContent = (
+    <>
+      <div className="flex items-center gap-2 px-4 py-3">
+        <HugeiconsIcon
+          icon={PencilEdit01Icon}
+          className="size-4 text-muted-foreground/70"
+        />
+        <span className="flex-1 text-base font-semibold tracking-tight">
+          Configuration
+        </span>
+      </div>
 
-        <div className="flex-1 overflow-y-auto px-1.5">
-          {/* mt-4 matches the Playground sidebar gap (SidebarHeader py-3 + SidebarGroup pt-1) */}
-          <div className="mt-4 px-2 pb-3">
+      <div className="flex-1 overflow-y-auto px-1.5">
+        {/* mt-4 matches the Playground sidebar gap (SidebarHeader py-3 + SidebarGroup pt-1) */}
+        <div className="mt-4 px-2 pb-3">
             <div className="flex items-center gap-2">
               <Select value={activePreset} onValueChange={applyPreset}>
                 <SelectTrigger className="h-8 flex-1 corner-squircle text-xs">
@@ -434,7 +442,28 @@ export function ChatSettingsPanel({
 
           <ChatTemplateSection onReloadModel={onReloadModel} />
         </div>
-      </div>
+      </>
+  );
+
+  if (isMobile) {
+    return (
+      <Sheet open={open} onOpenChange={onOpenChange}>
+        <SheetContent side="right" className="w-[18rem] p-0">
+          <SheetHeader className="sr-only">
+            <SheetTitle>Configuration</SheetTitle>
+            <SheetDescription>Chat inference settings</SheetDescription>
+          </SheetHeader>
+          <div className="flex h-full flex-col">{settingsContent}</div>
+        </SheetContent>
+      </Sheet>
+    );
+  }
+
+  return (
+    <aside
+      className={`shrink-0 self-start h-[calc(100%-0.875rem)] overflow-hidden bg-muted/70 rounded-2xl corner-squircle transition-[width] duration-200 ease-linear ${open ? "w-[17rem] border-l border-sidebar-border/70" : "w-0"}`}
+    >
+      <div className="flex h-full w-[17rem] flex-col">{settingsContent}</div>
     </aside>
   );
 }