refactor(ui): editorial monochrome design refresh (#473)

* refactor(ui): editorial monochrome design refresh

Design-system layer only, no functional changes. Cascades app-wide
from 8 files in the primitives + tokens layer.

- Swap Fraunces → Hedvig Letters Serif for display typography
  (single-weight; drop font-medium from CardTitle and PageHeader)
- Token sweep: pure white background, warm beige secondary
  (40 11% 89%), achromatic primary, calibrated 45 5% 85% border,
  halved-opacity shadows
- Flatten Card: remove shadow, rounded-xl → rounded-lg, full-opacity
  border (was border-border/60)
- Flatten Button: remove shadow-sm, remove active:scale-[0.98],
  drop outline border morph, transition-all 300ms → transition-colors
  150ms
- Soften Dialog overlay (bg-black/80 → bg-black/40 with dark variant)
  and use halved --shadow-md token on DialogContent
- Sidebar: bg-card/90 → bg-background, full-opacity hairline border,
  warm-beige active state (bg-secondary), hover bg-secondary/60
- .hover-lift utility: replace translateY + box-shadow with flat
  background-color shift
- PageHeader title: text-2xl font-medium → text-3xl md:text-4xl
  (no font-medium)
- CLAUDE.md Brand & Aesthetic, Typography, and Forbidden Patterns
  sections rewritten to reflect new system

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* refactor(ui): address PR review

- Remove dead .hover-lift utility (no callers; CLAUDE.md now bans
  hover-lift patterns, so leaving the class would contradict the docs)
- Bump Dialog overlay bg-black/40 → bg-black/50 — gives a more
  perceptible separation layer over the new pure-white background
  while keeping the lighter editorial feel

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

CLAUDE.md

@@ -354,13 +354,13 @@ Swedish sole traders (enskild firma) and small business owners (aktiebolag) who
 
 ### Brand & Aesthetic
 
-**Minimal. Sharp. Efficient.** The interface should feel like a well-made instrument: considered, quiet, and confident. Reference: Mercury (banking). Anti-reference: enterprise software (SAP/Oracle density).
+**Editorial monochrome.** Paper-white surfaces, hairline borders, serif headlines. The interface should feel like a well-made instrument — considered, quiet, confident. Anti-references: enterprise software (SAP/Oracle density), neon SaaS coldness.
 
-- **Palette**: Grayscale foundation with restrained semantic colors — sage green (success/balance), terracotta (errors/overdue), ochre (warnings/attention). No loud brand color.
-- **Typography**: Fraunces (serif) for display headings, Geist (sans) for body. Tabular numbers everywhere financial data appears.
-- **Surfaces**: White/near-white cards on light gray backgrounds. Subtle borders (60% opacity). Soft shadows. Dark mode follows the same restraint.
+- **Palette**: Achromatic foundation. Pure white background, warm beige (`40 11% 89%`) for chips / active sidebar / hover / secondary buttons. Achromatic primary (no cool tint). Semantic colors (`--success` sage, `--warning` ochre, `--destructive` terracotta) exist but are **data-only** — they appear in charts and financial numbers (positive/negative deltas), never as chrome backgrounds. In chrome, only `--destructive` survives.
+- **Typography**: Hedvig Letters Serif for display headings, Geist (sans) for body, forms, and tables. Hedvig is single-weight (400) — do not apply `font-medium` to display text; its natural high-contrast strokes carry the weight. Tabular numbers everywhere financial data appears.
+- **Surfaces**: Cards sit flat on the page — no shadow, full-opacity hairline border (`border-border`), `rounded-lg` (8px). Card background matches page background; the border carries hierarchy. Dark mode drops the warm tint from secondary for a pure-gray mood shift; light mode keeps the beige.
 - **Spacing**: Generous whitespace. Dense data (tables, ledgers) uses tighter spacing but never feels cramped.
-- **Motion**: Subtle and purposeful. Stagger animations for list entry, spring easing for feedback. Never decorative.
+- **Motion**: Functional, not decorative. No press-scale, no hover-lift, no spring overshoot. Hover state is a flat background shift (`bg-secondary/60`). `transition-colors duration-150` is the default. Stagger animations on list entry are fine. Respect `prefers-reduced-motion` (already wired).
 - **Icons**: Lucide — 15px in navigation, slightly larger in empty states.
 
 ### Design Principles
@@ -426,11 +426,11 @@ Never render raw `{x.invoice_date}` directly — always route through `formatDat
 **Currency.** `formatCurrency(n, currency?)` from `lib/utils.ts`. Default SEK.
 
 **Typography.**
-- Page title: `<h1 className="font-display text-2xl md:text-3xl font-medium tracking-tight">` (or use `PageHeader`).
-- Card title: `<CardTitle className="text-base">` for sections, default for primary cards.
+- Page title: use `PageHeader` (renders `font-display text-3xl md:text-4xl tracking-tight`). Do not hand-roll an `<h1>`.
+- Card title: `<CardTitle className="text-base">` for sections, default for primary cards. The primitive already drops `font-medium` — do not add it back.
 - Section divider header inside a page: `<h2 className="text-sm font-medium uppercase tracking-wider text-muted-foreground">`.
-- Headline number: `font-display text-xl font-medium tabular-nums`.
-- Display font (`font-display`, Fraunces) reserved for h1/h2/h3 and primary financial numbers.
+- Headline number: `font-display text-xl tabular-nums`. No `font-medium` — Hedvig's natural weight carries the gravitas.
+- Display font (`font-display`, Hedvig Letters Serif) reserved for h1/h2/h3 and primary financial numbers. If a specific `font-display` numeral reads weak inside a compact metric card, override that call site with `font-sans tabular-nums` (Geist) — better legibility on small numerals.
 
 **Forbidden / dead patterns.**
 - Page descriptions that paraphrase the page title (e.g. `<PageHeader title="Fakturor" description="Hantera dina fakturor">`) → drop the description.
@@ -438,3 +438,9 @@ Never render raw `{x.invoice_date}` directly — always route through `formatDat
 - Mobile-specific `<select>` duplicating desktop tabs in code — use a single Tabs primitive or a single grouped `Select`.
 - Hand-rolled icon buttons smaller than `h-10 w-10`. Use shadcn `Button size="icon"`.
 - Color-coded status using full-rainbow Tailwind palette (`bg-amber-100`, `bg-emerald-500/10`, etc.). Use Badge variants tied to the brand palette.
+- `shadow-sm` / `shadow-md` / `shadow-lg` on cards, buttons, or list items. The aesthetic is flat-with-hairlines — surfaces use `border-border`, not elevation. Shadows survive only on dialogs/popovers/dropdowns (anything that overlays the page).
+- `active:scale-[...]` on buttons. Buttons do not bounce.
+- `bg-gradient-to-*` on page or card backgrounds. Flat surfaces only.
+- `font-medium` on display elements (`font-display`, h1/h2/h3, CardTitle, PageHeader title). Hedvig is single-weight by design.
+- `rounded-xl` (12px) on cards. Cards are `rounded-lg` (8px). `rounded-xl` survives only on prominent hero-style surfaces if absolutely needed.
+- Opacity-suffixed border classes (`border-border/30`, `border-border/60`) on cards and primary surfaces. Use full-opacity `border-border` — the new border token is calibrated for that.

app/globals.css

@@ -11,35 +11,35 @@
 
 :root {
   color-scheme: light;
-  /* Grayscale Chrome Palette */
+  /* Grayscale Chrome Palette — paper white + warm beige */
 
-  --background: 0 0% 97%;
+  --background: 0 0% 100%;
   --foreground: 0 0% 9%;
 
-  --card: 0 0% 99%;
+  --card: 0 0% 100%;
   --card-foreground: 0 0% 9%;
 
-  --popover: 0 0% 99%;
+  --popover: 0 0% 100%;
   --popover-foreground: 0 0% 9%;
 
-  --primary: 210 5% 25%;
+  --primary: 0 0% 9%;
   --primary-foreground: 0 0% 100%;
 
-  --secondary: 0 0% 94%;
+  --secondary: 40 11% 89%;                /* Warm beige paper chip */
   --secondary-foreground: 0 0% 9%;
 
-  --muted: 0 0% 92%;
+  --muted: 40 8% 93%;
   --muted-foreground: 0 0% 40%;
 
-  --accent: 0 0% 92%;
+  --accent: 40 8% 93%;
   --accent-foreground: 0 0% 9%;
 
   --destructive: 6 36% 48%;               /* Muted terracotta */
   --destructive-foreground: 0 0% 100%;
 
-  --border: 0 0% 90%;
-  --input: 0 0% 90%;
-  --ring: 210 5% 25%;
+  --border: 45 5% 85%;
+  --input: 45 5% 85%;
+  --ring: 0 0% 9%;
 
   /* Radius */
   --radius: 0.5rem;
@@ -61,13 +61,13 @@
   --chart-4: 0 0% 50%;
 
   /* Custom tokens */
-  --font-display: var(--font-fraunces), Georgia, serif;
+  --font-display: var(--font-hedvig-serif), Georgia, serif;
   --font-body: var(--font-geist-sans), system-ui, sans-serif;
 
-  /* Shadows — cool-toned */
-  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
-  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.06);
-  --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.08);
+  /* Shadows — barely-there; chrome relies on hairline borders */
+  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.03), 0 1px 1px rgba(15, 23, 42, 0.02);
+  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.03);
+  --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.05);
 
   /* Animation */
   --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
@@ -83,13 +83,13 @@
   --background: 0 0% 7%;
   --foreground: 0 0% 87%;
 
-  --card: 0 0% 10%;
+  --card: 0 0% 11%;
   --card-foreground: 0 0% 87%;
 
-  --popover: 0 0% 10%;
+  --popover: 0 0% 11%;
   --popover-foreground: 0 0% 87%;
 
-  --primary: 210 4% 82%;
+  --primary: 0 0% 87%;
   --primary-foreground: 0 0% 7%;
 
   --secondary: 0 0% 14%;
@@ -104,9 +104,9 @@
   --destructive: 6 32% 56%;
   --destructive-foreground: 0 0% 100%;
 
-  --border: 0 0% 18%;
-  --input: 0 0% 18%;
-  --ring: 210 4% 82%;
+  --border: 45 4% 18%;
+  --input: 45 4% 18%;
+  --ring: 0 0% 87%;
 
   --success: 155 22% 48%;
   --success-foreground: 0 0% 100%;
@@ -278,17 +278,6 @@ h1, h2, h3 {
   animation: scaleIn var(--duration-base) var(--ease-out);
 }
 
-/* Refined hover effects */
-.hover-lift {
-  transition: transform var(--duration-fast) var(--ease-out),
-              box-shadow var(--duration-fast) var(--ease-out);
-}
-
-.hover-lift:hover {
-  transform: translateY(-1px);
-  box-shadow: var(--shadow-md);
-}
-
 /* Soft focus states */
 .focus-ring:focus-visible {
   outline: none;
@@ -357,8 +346,4 @@ input[type="number"] {
     animation: none;
     opacity: 1;
   }
-
-  .hover-lift:hover {
-    transform: none;
-  }
 }

app/layout.tsx

@@ -1,6 +1,6 @@
 import type { Metadata, Viewport } from "next";
 import { Geist, Geist_Mono } from "next/font/google";
-import { Fraunces } from "next/font/google";
+import { Hedvig_Letters_Serif } from "next/font/google";
 import Script from "next/script";
 import { Toaster } from "@/components/ui/toaster";
 import { ThemeProvider } from "@/components/theme-provider";
@@ -23,10 +23,11 @@ const geistMono = Geist_Mono({
   subsets: ["latin"],
 });
 
-const fraunces = Fraunces({
-  variable: "--font-fraunces",
+const hedvigSerif = Hedvig_Letters_Serif({
+  variable: "--font-hedvig-serif",
   subsets: ["latin"],
   display: "swap",
+  weight: "400",
 });
 
 export function generateMetadata(): Metadata {
@@ -59,7 +60,7 @@ export default function RootLayout({
 }>) {
   const branding = getBranding();
   return (
-    <html lang="sv" translate="no" suppressHydrationWarning className={`${geistSans.variable} ${geistMono.variable} ${fraunces.variable}`}>
+    <html lang="sv" translate="no" suppressHydrationWarning className={`${geistSans.variable} ${geistMono.variable} ${hedvigSerif.variable}`}>
       <head>
         <meta name="google" content="notranslate" />
         <link rel="apple-touch-icon" href={branding.appleTouchIconPath} />

components/dashboard/DashboardNav.tsx

@@ -188,7 +188,7 @@ export default function DashboardNav({ companyName: _companyName, entityType, un
     <>
       {/* Desktop sidebar */}
       <aside className="hidden md:fixed md:inset-y-0 md:flex md:w-64 md:flex-col">
-        <div className="flex min-h-0 flex-1 flex-col border-r border-border/30 bg-card/90">
+        <div className="flex min-h-0 flex-1 flex-col border-r border-border bg-background">
           <div className="flex flex-1 flex-col overflow-y-auto pt-7 pb-4">
             {/* Company switcher */}
             <div className="px-5 mb-8">
@@ -235,8 +235,8 @@ export default function DashboardNav({ companyName: _companyName, entityType, un
                         ? cn(
                             'transition-colors duration-150',
                             active
-                              ? 'bg-primary/12 text-foreground font-medium'
-                              : 'text-muted-foreground hover:text-foreground hover:bg-muted/40'
+                              ? 'bg-secondary text-foreground font-medium'
+                              : 'text-muted-foreground hover:text-foreground hover:bg-secondary/60'
                           )
                         : 'text-muted-foreground/40 cursor-not-allowed'
                     )
@@ -306,8 +306,8 @@ export default function DashboardNav({ companyName: _companyName, entityType, un
                           ? cn(
                               'transition-colors duration-150',
                               active
-                                ? 'bg-primary/12 text-foreground font-medium'
-                                : 'text-muted-foreground hover:text-foreground hover:bg-muted/40'
+                                ? 'bg-secondary text-foreground font-medium'
+                                : 'text-muted-foreground hover:text-foreground hover:bg-secondary/60'
                             )
                           : 'text-muted-foreground/40 cursor-not-allowed'
                       )
@@ -364,8 +364,8 @@ export default function DashboardNav({ companyName: _companyName, entityType, un
                           ? cn(
                               'transition-colors duration-150',
                               active
-                                ? 'bg-primary/12 text-foreground font-medium'
-                                : 'text-muted-foreground hover:text-foreground hover:bg-muted/40'
+                                ? 'bg-secondary text-foreground font-medium'
+                                : 'text-muted-foreground hover:text-foreground hover:bg-secondary/60'
                             )
                           : 'text-muted-foreground/40 cursor-not-allowed'
                       )
@@ -403,8 +403,8 @@ export default function DashboardNav({ companyName: _companyName, entityType, un
                           ? cn(
                               'transition-colors duration-150',
                               active
-                                ? 'bg-primary/12 text-foreground font-medium'
-                                : 'text-muted-foreground hover:text-foreground hover:bg-muted/40'
+                                ? 'bg-secondary text-foreground font-medium'
+                                : 'text-muted-foreground hover:text-foreground hover:bg-secondary/60'
                             )
                           : 'text-muted-foreground/40 cursor-not-allowed'
                       )
@@ -430,7 +430,7 @@ export default function DashboardNav({ companyName: _companyName, entityType, un
           </div>
 
           {/* Support + Logout */}
-          <div className="flex-shrink-0 px-3 py-3 border-t border-border/30 space-y-1">
+          <div className="flex-shrink-0 px-3 py-3 border-t border-border space-y-1">
             <div className="px-3 py-1.5">
               <SupportLink variant="muted" />
             </div>
@@ -762,7 +762,7 @@ export default function DashboardNav({ companyName: _companyName, entityType, un
             </div>
 
             {/* Support + Logout */}
-            <div className="px-2 py-2 mt-1 border-t border-border/30 space-y-1">
+            <div className="px-2 py-2 mt-1 border-t border-border space-y-1">
               <div className="px-3 py-2">
                 <SupportLink variant="muted" />
               </div>

components/ui/button.tsx

@@ -4,16 +4,16 @@ import { cva, type VariantProps } from "class-variance-authority"
 import { cn } from "@/lib/utils"
 
 const buttonVariants = cva(
-  "inline-flex items-center justify-center whitespace-nowrap text-sm font-medium transition-all duration-300 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 focus-visible:ring-offset-background disabled:pointer-events-none disabled:opacity-50",
+  "inline-flex items-center justify-center whitespace-nowrap text-sm font-medium transition-colors duration-150 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 focus-visible:ring-offset-background disabled:pointer-events-none disabled:opacity-50",
   {
     variants: {
       variant: {
         default:
-          "bg-primary text-primary-foreground shadow-sm hover:bg-primary/80 active:scale-[0.98]",
+          "bg-primary text-primary-foreground hover:bg-primary/90",
         destructive:
-          "bg-destructive text-destructive-foreground shadow-sm hover:bg-destructive/80 active:scale-[0.98]",
+          "bg-destructive text-destructive-foreground hover:bg-destructive/90",
         outline:
-          "border border-input bg-transparent hover:bg-secondary hover:border-secondary-foreground/20",
+          "border border-input bg-transparent hover:bg-secondary",
         secondary:
           "bg-secondary text-secondary-foreground hover:bg-secondary/70",
         ghost:
@@ -21,7 +21,7 @@ const buttonVariants = cva(
         link:
           "text-primary underline-offset-4 hover:underline",
         success:
-          "bg-success text-success-foreground shadow-sm hover:bg-success/80 active:scale-[0.98]",
+          "bg-success text-success-foreground hover:bg-success/90",
       },
       size: {
         default: "h-10 px-5 py-2 rounded-lg",

components/ui/card.tsx

@@ -8,7 +8,7 @@ const Card = React.forwardRef<
   <div
     ref={ref}
     className={cn(
-      "rounded-xl border border-border/60 bg-card text-card-foreground shadow-[var(--shadow-sm)]",
+      "rounded-lg border border-border bg-card text-card-foreground",
       className
     )}
     {...props}
@@ -35,7 +35,7 @@ const CardTitle = React.forwardRef<
   <h3
     ref={ref}
     className={cn(
-      "font-display text-xl font-medium leading-none tracking-tight",
+      "font-display text-xl leading-none tracking-tight",
       className
     )}
     {...props}

components/ui/dialog.tsx

@@ -20,7 +20,7 @@ const DialogOverlay = React.forwardRef<
   <DialogPrimitive.Overlay
     ref={ref}
     className={cn(
-      "fixed inset-0 z-50 bg-black/80 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0",
+      "fixed inset-0 z-50 bg-black/50 dark:bg-black/60 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0",
       className
     )}
     {...props}
@@ -37,7 +37,7 @@ const DialogContent = React.forwardRef<
     <DialogPrimitive.Content
       ref={ref}
       className={cn(
-        "fixed left-[50%] top-[50%] z-50 grid w-full max-w-lg translate-x-[-50%] translate-y-[-50%] gap-4 border bg-background p-6 shadow-lg duration-200 max-h-[calc(100dvh-2rem)] overflow-y-auto data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[state=closed]:slide-out-to-left-1/2 data-[state=closed]:slide-out-to-top-[48%] data-[state=open]:slide-in-from-left-1/2 data-[state=open]:slide-in-from-top-[48%] sm:rounded-lg",
+        "fixed left-[50%] top-[50%] z-50 grid w-full max-w-lg translate-x-[-50%] translate-y-[-50%] gap-4 border bg-background p-6 shadow-[var(--shadow-md)] duration-200 max-h-[calc(100dvh-2rem)] overflow-y-auto data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[state=closed]:slide-out-to-left-1/2 data-[state=closed]:slide-out-to-top-[48%] data-[state=open]:slide-in-from-left-1/2 data-[state=open]:slide-in-from-top-[48%] sm:rounded-lg",
         className
       )}
       {...props}

components/ui/page-header.tsx

@@ -10,7 +10,7 @@ export function PageHeader({ title, description, action }: PageHeaderProps) {
   return (
     <div className="flex flex-col gap-4 sm:flex-row sm:items-center sm:justify-between mb-8">
       <div>
-        <h1 className="font-display text-2xl font-medium tracking-tight">{title}</h1>
+        <h1 className="font-display text-3xl md:text-4xl tracking-tight">{title}</h1>
         {description && (
           <p className="text-muted-foreground mt-1 text-balance">{description}</p>
         )}