fix(ui): preserve dialog cap outside scoped width overrides

src/renderer/src/components/ui/dialog-content-class.test.ts

@@ -33,6 +33,18 @@ describe('resolveDialogContentClassName', () => {
     expect(cls).not.toContain('sm:max-w-lg')
   })
 
+  it('keeps the default below a later responsive override', () => {
+    const cls = resolveDialogContentClassName('md:max-w-2xl')
+    expect(cls).toContain('sm:max-w-lg')
+    expect(cls).toContain('md:max-w-2xl')
+  })
+
+  it('does not treat a descendant max-width as a dialog width override', () => {
+    const cls = resolveDialogContentClassName('[&_pre]:max-w-full')
+    expect(cls).toContain('sm:max-w-lg')
+    expect(cls).toContain('[&_pre]:max-w-full')
+  })
+
   it('preserves an intentionally uncapped (max-w-none) dialog', () => {
     const cls = resolveDialogContentClassName('max-w-none sm:max-w-none')
     expect(cls).toContain('max-w-none')
@@ -46,6 +58,12 @@ describe('resolveDialogContentClassName', () => {
     expect(cls).not.toContain('sm:max-w-lg')
   })
 
+  it('respects Tailwind v4 suffix-important max-width overrides', () => {
+    const cls = resolveDialogContentClassName('max-w-[360px]!')
+    expect(cls).toContain('max-w-[360px]!')
+    expect(cls).not.toContain('sm:max-w-lg')
+  })
+
   it('appends caller layout classes after the base', () => {
     const cls = resolveDialogContentClassName('gap-4 p-0 sm:max-w-[520px]')
     expect(cls).toContain('gap-4')

src/renderer/src/components/ui/dialog-content-class.ts

@@ -1,37 +1,21 @@
 import { cn } from '@/lib/utils'
 
-// Why: bg-background in dark mode is the same color as the canvas, and
-// border-border/50 is ~3.5% white over that canvas — both invisible. A
-// translucent surface, solid 14% border, dual shadow, and 2xl backdrop blur
-// match the dropdown-menu recipe (which already works) and read clearly in both
-// light and dark mode.
+// The translucent surface and stronger border/shadow keep dialogs distinct from
+// the same-color dark canvas, matching the established dropdown treatment.
 const DIALOG_CONTENT_BASE_CLASS =
   'fixed top-[50%] left-[50%] z-50 grid w-full max-w-[calc(100%-2rem)] translate-x-[-50%] translate-y-[-50%] gap-4 rounded-lg border border-black/14 bg-background/96 p-6 text-foreground shadow-[0_20px_60px_rgba(0,0,0,0.28),inset_0_1px_0_rgba(255,255,255,0.08)] backdrop-blur-2xl duration-200 outline-none dark:border-white/14 dark:bg-[rgba(23,23,23,0.96)] dark:shadow-[0_24px_72px_rgba(0,0,0,0.55),inset_0_1px_0_rgba(255,255,255,0.06)] data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=closed]:zoom-out-95 data-[state=open]:animate-in data-[state=open]:fade-in-0 data-[state=open]:zoom-in-95'
 
-/** The default desktop width cap. Applied only when the caller sets no
- *  max-width of their own (see resolveDialogContentClassName). */
 const DIALOG_CONTENT_DEFAULT_MAX_WIDTH = 'sm:max-w-lg'
 
-/** Matches a Tailwind `max-w-*` utility in a className string, with or without a
- *  variant prefix (`sm:`) or important (`!`) modifier. */
-const CALLER_MAX_WIDTH = /(?:^|[\s:!])max-w-/
+const CALLER_UNSCOPED_MAX_WIDTH = /(?:^|\s)!?max-w-/
 
-/**
- * Compose the DialogContent className.
- *
- * The default cap is `sm:max-w-lg`, but because it is scoped to the `sm`
- * breakpoint, a caller's unprefixed `max-w-*` lands in a different responsive
- * bucket and tailwind-merge keeps both — so the default silently wins at ≥sm and
- * the caller's width is ignored on desktop. Applying the default only when the
- * caller has not set their own max-width lets a bare `className="max-w-md"` win
- * at every breakpoint, while leaving callers that pass no width (default cap) or
- * an `sm:`-prefixed width (already overrode the default) byte-for-byte unchanged.
- */
+// Bare widths must replace the responsive default across breakpoints; scoped
+// widths keep the default outside their own responsive or selector scope.
 export function resolveDialogContentClassName(className?: string): string {
-  const hasCallerMaxWidth = className ? CALLER_MAX_WIDTH.test(className) : false
+  const hasUnscopedCallerMaxWidth = className ? CALLER_UNSCOPED_MAX_WIDTH.test(className) : false
   return cn(
     DIALOG_CONTENT_BASE_CLASS,
-    !hasCallerMaxWidth && DIALOG_CONTENT_DEFAULT_MAX_WIDTH,
+    !hasUnscopedCallerMaxWidth && DIALOG_CONTENT_DEFAULT_MAX_WIDTH,
     className
   )
 }