fix(ui): lighten menu shadows with dedicated --menu-shadow token (#5256)

Dropdown, context menu, select, and popover surfaces used
--floating-shadow, which is sized for window-level overlays and reads
too heavy on trigger-anchored menus. Introduce a lighter --menu-shadow
tier (surface < menu < floating) and drop the shadow-lg override on
ContextMenuSubContent so submenus match their parent menu. Dialogs and
sheets keep --floating-shadow.

Co-authored-by: Lambda <lambda@multica.ai>
Co-authored-by: multica-agent <github@multica.ai>

apps/web/app/custom.css

@@ -27,6 +27,7 @@
     --surface-border: oklch(0.92 0.004 286.32);
     --surface-shadow: 0 1px 2px rgb(15 23 42 / 0.04), 0 1px 1px rgb(15 23 42 / 0.03);
     --floating-shadow: 0 16px 40px rgb(15 23 42 / 0.14), 0 3px 10px rgb(15 23 42 / 0.08);
+    --menu-shadow: 0 8px 24px rgb(15 23 42 / 0.08), 0 2px 6px rgb(15 23 42 / 0.05);
     --background: oklch(1 0 0);
     --foreground: oklch(0.141 0.005 285.823);
     --card: oklch(1 0 0);

packages/ui/components/ui/context-menu.tsx

@@ -52,7 +52,7 @@ function ContextMenuContent({
       >
         <ContextMenuPrimitive.Popup
           data-slot="context-menu-content"
-          className={cn("z-50 max-h-(--available-height) min-w-36 origin-(--transform-origin) overflow-x-hidden overflow-y-auto rounded-lg bg-surface-raised p-1 text-popover-foreground shadow-[var(--floating-shadow)] ring-1 ring-surface-border duration-100 outline-none data-[side=bottom]:slide-in-from-top-2 data-[side=inline-end]:slide-in-from-left-2 data-[side=inline-start]:slide-in-from-right-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 data-open:animate-in data-open:fade-in-0 data-open:zoom-in-95 data-closed:animate-out data-closed:fade-out-0 data-closed:zoom-out-95", className )}
+          className={cn("z-50 max-h-(--available-height) min-w-36 origin-(--transform-origin) overflow-x-hidden overflow-y-auto rounded-lg bg-surface-raised p-1 text-popover-foreground shadow-[var(--menu-shadow)] ring-1 ring-surface-border duration-100 outline-none data-[side=bottom]:slide-in-from-top-2 data-[side=inline-end]:slide-in-from-left-2 data-[side=inline-start]:slide-in-from-right-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 data-open:animate-in data-open:fade-in-0 data-open:zoom-in-95 data-closed:animate-out data-closed:fade-out-0 data-closed:zoom-out-95", className )}
           {...props}
         />
       </ContextMenuPrimitive.Positioner>
@@ -145,7 +145,6 @@ function ContextMenuSubContent({
   return (
     <ContextMenuContent
       data-slot="context-menu-sub-content"
-      className="shadow-lg"
       side="right"
       {...props}
     />

packages/ui/components/ui/dropdown-menu.tsx

@@ -51,7 +51,7 @@ function DropdownMenuContent({
             e.stopPropagation()
             onClick?.(e)
           }}
-          className={cn("z-50 max-h-(--available-height) min-w-32 origin-(--transform-origin) overflow-x-hidden overflow-y-auto rounded-lg bg-surface-raised p-1 text-popover-foreground shadow-[var(--floating-shadow)] ring-1 ring-surface-border duration-100 outline-none data-[side=bottom]:slide-in-from-top-2 data-[side=inline-end]:slide-in-from-left-2 data-[side=inline-start]:slide-in-from-right-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 data-open:animate-in data-open:fade-in-0 data-open:zoom-in-95 data-closed:animate-out data-closed:overflow-hidden data-closed:fade-out-0 data-closed:zoom-out-95", className )}
+          className={cn("z-50 max-h-(--available-height) min-w-32 origin-(--transform-origin) overflow-x-hidden overflow-y-auto rounded-lg bg-surface-raised p-1 text-popover-foreground shadow-[var(--menu-shadow)] ring-1 ring-surface-border duration-100 outline-none data-[side=bottom]:slide-in-from-top-2 data-[side=inline-end]:slide-in-from-left-2 data-[side=inline-start]:slide-in-from-right-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 data-open:animate-in data-open:fade-in-0 data-open:zoom-in-95 data-closed:animate-out data-closed:overflow-hidden data-closed:fade-out-0 data-closed:zoom-out-95", className )}
           {...props}
         />
       </MenuPrimitive.Positioner>
@@ -145,7 +145,7 @@ function DropdownMenuSubContent({
   return (
     <DropdownMenuContent
       data-slot="dropdown-menu-sub-content"
-      className={cn("w-auto min-w-[96px] rounded-lg bg-surface-raised p-1 text-popover-foreground shadow-[var(--floating-shadow)] ring-1 ring-surface-border duration-100 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 data-open:animate-in data-open:fade-in-0 data-open:zoom-in-95 data-closed:animate-out data-closed:fade-out-0 data-closed:zoom-out-95", className )}
+      className={cn("w-auto min-w-[96px] rounded-lg bg-surface-raised p-1 text-popover-foreground shadow-[var(--menu-shadow)] ring-1 ring-surface-border duration-100 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 data-open:animate-in data-open:fade-in-0 data-open:zoom-in-95 data-closed:animate-out data-closed:fade-out-0 data-closed:zoom-out-95", className )}
       align={align}
       alignOffset={alignOffset}
       side={side}

packages/ui/components/ui/popover.tsx

@@ -43,7 +43,7 @@ function PopoverContent({
         <PopoverPrimitive.Popup
           data-slot="popover-content"
           className={cn(
-            "z-50 flex w-72 origin-(--transform-origin) flex-col gap-2.5 rounded-lg bg-surface-raised p-2.5 text-sm text-popover-foreground shadow-[var(--floating-shadow)] ring-1 ring-surface-border outline-hidden duration-100 data-[side=bottom]:slide-in-from-top-2 data-[side=inline-end]:slide-in-from-left-2 data-[side=inline-start]:slide-in-from-right-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 data-open:animate-in data-open:fade-in-0 data-open:zoom-in-95 data-closed:animate-out data-closed:fade-out-0 data-closed:zoom-out-95",
+            "z-50 flex w-72 origin-(--transform-origin) flex-col gap-2.5 rounded-lg bg-surface-raised p-2.5 text-sm text-popover-foreground shadow-[var(--menu-shadow)] ring-1 ring-surface-border outline-hidden duration-100 data-[side=bottom]:slide-in-from-top-2 data-[side=inline-end]:slide-in-from-left-2 data-[side=inline-start]:slide-in-from-right-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 data-open:animate-in data-open:fade-in-0 data-open:zoom-in-95 data-closed:animate-out data-closed:fade-out-0 data-closed:zoom-out-95",
             className
           )}
           {...props}

packages/ui/components/ui/select.tsx

@@ -83,7 +83,7 @@ function SelectContent({
         <SelectPrimitive.Popup
           data-slot="select-content"
           data-align-trigger={alignItemWithTrigger}
-          className={cn("relative isolate z-50 max-h-(--available-height) w-(--anchor-width) min-w-36 origin-(--transform-origin) overflow-x-hidden overflow-y-auto rounded-lg bg-surface-raised text-popover-foreground shadow-[var(--floating-shadow)] ring-1 ring-surface-border duration-100 data-[align-trigger=true]:animate-none data-[side=bottom]:slide-in-from-top-2 data-[side=inline-end]:slide-in-from-left-2 data-[side=inline-start]:slide-in-from-right-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 data-open:animate-in data-open:fade-in-0 data-open:zoom-in-95 data-closed:animate-out data-closed:fade-out-0 data-closed:zoom-out-95", className )}
+          className={cn("relative isolate z-50 max-h-(--available-height) w-(--anchor-width) min-w-36 origin-(--transform-origin) overflow-x-hidden overflow-y-auto rounded-lg bg-surface-raised text-popover-foreground shadow-[var(--menu-shadow)] ring-1 ring-surface-border duration-100 data-[align-trigger=true]:animate-none data-[side=bottom]:slide-in-from-top-2 data-[side=inline-end]:slide-in-from-left-2 data-[side=inline-start]:slide-in-from-right-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 data-open:animate-in data-open:fade-in-0 data-open:zoom-in-95 data-closed:animate-out data-closed:fade-out-0 data-closed:zoom-out-95", className )}
           {...props}
         >
           <SelectScrollUpButton />

packages/ui/styles/tokens.css

@@ -75,6 +75,10 @@
     --surface-border: oklch(0.92 0.004 286.32);
     --surface-shadow: 0 1px 2px rgb(15 23 42 / 0.04), 0 1px 1px rgb(15 23 42 / 0.03);
     --floating-shadow: 0 16px 40px rgb(15 23 42 / 0.14), 0 3px 10px rgb(15 23 42 / 0.08);
+    /* Menus (dropdown/context/select/popover) hover just above their trigger,
+       so they carry a lighter shadow than window-level overlays (dialogs,
+       sheets), which keep --floating-shadow. */
+    --menu-shadow: 0 8px 24px rgb(15 23 42 / 0.08), 0 2px 6px rgb(15 23 42 / 0.05);
     --background: var(--page-canvas);
     --foreground: oklch(0.141 0.005 285.823);
     --card: var(--surface);
@@ -141,6 +145,7 @@
     --surface-border: oklch(1 0 0 / 10%);
     --surface-shadow: 0 1px 2px rgb(0 0 0 / 0.2), 0 1px 1px rgb(0 0 0 / 0.16);
     --floating-shadow: 0 20px 48px rgb(0 0 0 / 0.46), 0 4px 12px rgb(0 0 0 / 0.28);
+    --menu-shadow: 0 10px 28px rgb(0 0 0 / 0.3), 0 2px 8px rgb(0 0 0 / 0.18);
     --background: var(--page-canvas);
     --foreground: oklch(0.985 0 0);
     --card: var(--surface);