diff --git a/README.md b/README.md
index 9d63efe..5b03e63 100644
--- a/README.md
+++ b/README.md
@@ -28,6 +28,7 @@ product, niet als medisch hulpmiddel. Release 1 blijft smal:
 - korte onboardingflow voor eerste voorkeuren
 - instellingen voor taal, timezone, reminders en zichtbaarheid van energiepunten
 - `shadcn/ui` foundation voor knoppen, formulieren, kaarten en meldingen
+- `Dusk`-theme met dark-mode prioriteit, semantische oppervlakken en verbeterde focus-/toegankelijkheidsstijlen
 
 ## Stack
 
@@ -94,6 +95,10 @@ knoppen, formulieren, kaarten en meldingen. De theme tokens staan centraal in
 Voor feedback na redirects of server actions krijgt de app nu standaard de voorkeur
 voor `sonner`-toasts boven losse inline statusmeldingen.
 
+De actuele visuele richting is `Dusk`: warme paper-achtergronden, gedempte indigo
+als primaire kleur, dark mode als standaard en semantische `success`/`warning`
+tokens voor rustige, niet-medische feedback.
+
 ## Interne wizard-test
 
 Er is een interne testwizard beschikbaar op `/wizard-test` om een toekomstige
@@ -109,6 +114,7 @@ zichtbaar als `NEXT_PUBLIC_ENABLE_TEST_WIZARD=true` staat.
 ## Documentatie
 
 - Hoofdset specificaties en plannen: [docs/README.md](/Users/janpetervisser/Development/third/docs/README.md)
+- Dusk theme-specificatie: [inspannings-monitor-09-dusk-theme-specificatie-v01.md](/Users/janpetervisser/Development/third/docs/inspannings-monitor-09-dusk-theme-specificatie-v01.md)
 - Technische architectuur: [inspannings-monitor-05-technische-architectuur-en-implementatie-v01.docx](/Users/janpetervisser/Development/third/docs/inspannings-monitor-05-technische-architectuur-en-implementatie-v01.docx)
 - Implementatieplan en backlog: [inspannings-monitor-06-implementatieplan-en-backlog-v01.docx](/Users/janpetervisser/Development/third/docs/inspannings-monitor-06-implementatieplan-en-backlog-v01.docx)
 
diff --git a/app/check-in/page.tsx b/app/check-in/page.tsx
index ac869ce..ac15a41 100644
--- a/app/check-in/page.tsx
+++ b/app/check-in/page.tsx
@@ -55,14 +55,14 @@ export default async function CheckInPage({ searchParams }: CheckInPageProps) {
   );
 
   return (
-    <main className="min-h-screen bg-[radial-gradient(circle_at_top,_rgba(167,201,87,0.22),_transparent_32%),linear-gradient(180deg,_#f5f4ee_0%,_#eef2e6_100%)] px-6 py-10 text-slate-900 sm:px-8">
+    <main className="app-page">
       <div className="mx-auto flex max-w-6xl flex-col gap-8">
         <StatusToastBridge toast={statusToast} paramKeys={["error", "status"]} />
 
-        <header className="flex flex-col gap-5 rounded-[2rem] border border-black/10 bg-white/75 p-6 shadow-[0_18px_60px_rgba(71,85,105,0.12)] backdrop-blur sm:flex-row sm:items-start sm:justify-between sm:p-8">
+        <header className="app-page-header">
           <div>
-            <div className="flex flex-wrap items-center gap-3 text-xs font-semibold uppercase tracking-[0.24em] text-slate-500">
-              <Link href="/dashboard" className="transition hover:text-slate-900">
+            <div className="app-page-breadcrumb">
+              <Link href="/dashboard" className="app-page-link">
                 Dashboard
               </Link>
               <span>/</span>
@@ -71,7 +71,7 @@ export default async function CheckInPage({ searchParams }: CheckInPageProps) {
             <h1 className="mt-3 font-[family-name:var(--font-display)] text-4xl leading-tight">
               Ochtendcheck-in van vandaag
             </h1>
-            <p className="mt-4 max-w-2xl text-base leading-8 text-slate-700">
+            <p className="app-page-copy">
               Houd je start rustig en klein. Je legt alleen een energiescore en een
               globale slaapindruk vast voor vandaag.
             </p>
@@ -99,12 +99,12 @@ export default async function CheckInPage({ searchParams }: CheckInPageProps) {
           <CheckInForm todayCheckIn={checkInStatus?.todayCheckIn ?? null} />
 
           <aside className="space-y-5">
-            <Card className="rounded-[1.75rem] border border-border/60 bg-card/90 py-0 shadow-[0_12px_40px_rgba(71,85,105,0.08)]">
+            <Card className="py-0">
               <CardHeader className="pb-0">
                 <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
                   Vandaag
                 </p>
-                <CardTitle className="text-lg text-slate-900">
+                <CardTitle className="text-lg text-foreground">
                   {checkInStatus?.todayCheckIn ? "Check-in staat al klaar" : "Nog geen check-in"}
                 </CardTitle>
               </CardHeader>
@@ -123,7 +123,7 @@ export default async function CheckInPage({ searchParams }: CheckInPageProps) {
               </CardContent>
             </Card>
 
-            <Card className="rounded-[1.75rem] border border-primary/15 bg-primary py-0 text-primary-foreground shadow-[0_12px_40px_rgba(22,58,43,0.18)]">
+            <Card tone="primary" elevation="raised" className="py-0">
               <CardHeader className="pb-0">
                 <p className="text-xs font-semibold uppercase tracking-[0.24em] text-primary-foreground/75">
                   Bewuste grens
diff --git a/app/dashboard/page.tsx b/app/dashboard/page.tsx
index 87c8740..f6b2dff 100644
--- a/app/dashboard/page.tsx
+++ b/app/dashboard/page.tsx
@@ -77,19 +77,19 @@ export default async function DashboardPage({ searchParams }: DashboardPageProps
   );
 
   return (
-    <main className="min-h-screen bg-[radial-gradient(circle_at_top,_rgba(167,201,87,0.22),_transparent_32%),linear-gradient(180deg,_#f5f4ee_0%,_#eef2e6_100%)] px-6 py-10 text-slate-900 sm:px-8">
+    <main className="app-page">
       <div className="mx-auto flex max-w-6xl flex-col gap-8">
         <StatusToastBridge toast={statusToast} />
 
-        <header className="flex flex-col gap-5 rounded-[2rem] border border-black/10 bg-white/75 p-6 shadow-[0_18px_60px_rgba(71,85,105,0.12)] backdrop-blur sm:flex-row sm:items-start sm:justify-between sm:p-8">
+        <header className="app-page-header">
           <div>
-            <p className="text-xs font-semibold uppercase tracking-[0.24em] text-slate-500">
+            <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
               Protected route
             </p>
             <h1 className="mt-3 font-[family-name:var(--font-display)] text-4xl leading-tight">
               Dashboard placeholder voor release 1
             </h1>
-            <p className="mt-4 max-w-2xl text-base leading-8 text-slate-700">
+            <p className="app-page-copy">
               Je sessie is server-side gevalideerd en het minimale profielbundle is
               nu beschikbaar. Daarmee staat de fundering voor onboarding, settings
               en de eerste energieflows klaar.
@@ -135,12 +135,12 @@ export default async function DashboardPage({ searchParams }: DashboardPageProps
         </header>
 
         <section className="grid gap-5 md:grid-cols-3">
-          <Card className="rounded-[1.75rem] border border-border/60 bg-card/90 py-0 shadow-[0_12px_40px_rgba(71,85,105,0.08)]">
+          <Card className="py-0">
             <CardHeader className="pb-0">
               <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
                 Auth
               </p>
-              <CardTitle className="text-lg text-slate-900">Cookie-based sessie actief</CardTitle>
+              <CardTitle className="text-lg text-foreground">Cookie-based sessie actief</CardTitle>
             </CardHeader>
             <CardContent className="pb-6">
               <CardDescription className="text-sm leading-7 text-muted-foreground">
@@ -149,12 +149,12 @@ export default async function DashboardPage({ searchParams }: DashboardPageProps
             </CardContent>
           </Card>
 
-          <Card className="rounded-[1.75rem] border border-border/60 bg-card/90 py-0 shadow-[0_12px_40px_rgba(71,85,105,0.08)]">
+          <Card className="py-0">
             <CardHeader className="pb-0">
               <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
                 Profiel
               </p>
-              <CardTitle className="text-lg text-slate-900">{profileTitle}</CardTitle>
+              <CardTitle className="text-lg text-foreground">{profileTitle}</CardTitle>
             </CardHeader>
             <CardContent className="pb-6">
               <CardDescription className="text-sm leading-7 text-muted-foreground">
@@ -164,12 +164,12 @@ export default async function DashboardPage({ searchParams }: DashboardPageProps
             </CardContent>
           </Card>
 
-          <Card className="rounded-[1.75rem] border border-border/60 bg-card/90 py-0 shadow-[0_12px_40px_rgba(71,85,105,0.08)]">
+          <Card className="py-0">
             <CardHeader className="pb-0">
               <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
                 Onboarding
               </p>
-              <CardTitle className="text-lg text-slate-900">{onboardingState}</CardTitle>
+              <CardTitle className="text-lg text-foreground">{onboardingState}</CardTitle>
             </CardHeader>
             <CardContent className="pb-6">
               <CardDescription className="text-sm leading-7 text-muted-foreground">
@@ -179,12 +179,12 @@ export default async function DashboardPage({ searchParams }: DashboardPageProps
             </CardContent>
           </Card>
 
-          <Card className="rounded-[1.75rem] border border-border/60 bg-card/90 py-0 shadow-[0_12px_40px_rgba(71,85,105,0.08)]">
+          <Card className="py-0">
             <CardHeader className="pb-0">
               <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
                 Instellingen
               </p>
-              <CardTitle className="text-lg text-slate-900">
+              <CardTitle className="text-lg text-foreground">
                 Punten {formatToggleState(settings.showEnergyPoints, "zichtbaar", "verborgen")}
               </CardTitle>
             </CardHeader>
@@ -198,12 +198,12 @@ export default async function DashboardPage({ searchParams }: DashboardPageProps
 
           <CheckInCard todayCheckIn={checkInStatus?.todayCheckIn ?? null} />
 
-          <Card className="rounded-[1.75rem] border border-border/60 bg-card/90 py-0 shadow-[0_12px_40px_rgba(71,85,105,0.08)]">
+          <Card className="py-0">
             <CardHeader className="pb-0">
               <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
                 Dagplanning
               </p>
-              <CardTitle className="text-lg text-slate-900">
+              <CardTitle className="text-lg text-foreground">
                 {planningStatus?.activities.length
                   ? `${planningStatus.activities.length} activiteiten voor vandaag`
                   : "Nog niets gepland voor vandaag"}
@@ -230,12 +230,12 @@ export default async function DashboardPage({ searchParams }: DashboardPageProps
           <EnergyMeterCard meter={planningMeter} tone="subtle" />
 
           {isTestWizardEnabled() ? (
-            <Card className="rounded-[1.75rem] border border-border/60 bg-card/90 py-0 shadow-[0_12px_40px_rgba(71,85,105,0.08)]">
+            <Card className="py-0">
               <CardHeader className="pb-0">
                 <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
                   Wizard core
                 </p>
-                <CardTitle className="text-lg text-slate-900">Interne testwizard actief</CardTitle>
+                <CardTitle className="text-lg text-foreground">Interne testwizard actief</CardTitle>
               </CardHeader>
               <CardContent className="pb-6">
                 <CardDescription className="text-sm leading-7 text-muted-foreground">
@@ -247,11 +247,11 @@ export default async function DashboardPage({ searchParams }: DashboardPageProps
         </section>
 
         {!profile.onboardingCompleted ? (
-          <Card className="rounded-[1.75rem] border border-amber-900/15 bg-amber-50 py-0 text-amber-950 shadow-[0_12px_40px_rgba(146,64,14,0.08)]">
+          <Card className="border-warning/32 bg-warning/16 py-0 text-foreground shadow-[var(--shadow-1)]">
             <CardContent className="flex flex-col gap-4 px-6 py-5 sm:flex-row sm:items-center sm:justify-between">
               <div>
                 <p className="font-semibold">Je onboarding is nog niet afgerond.</p>
-                <p className="mt-1 max-w-2xl text-sm leading-7 text-amber-900">
+                <p className="mt-1 max-w-2xl text-sm leading-7 text-foreground/82">
                   Je kunt de korte flow later alsnog afronden om je basisinstellingen
                   en eerste voorkeuren vast te leggen.
                 </p>
@@ -259,8 +259,8 @@ export default async function DashboardPage({ searchParams }: DashboardPageProps
               <Link
                 href="/onboarding"
                 className={cn(
-                  buttonVariants({ size: "lg" }),
-                  "h-11 shrink-0 rounded-full bg-amber-950 px-5 text-amber-50 hover:bg-amber-900",
+                  buttonVariants({ variant: "warning", size: "lg" }),
+                  "h-11 shrink-0 rounded-full px-5",
                 )}
               >
                 Rond onboarding af
@@ -268,7 +268,7 @@ export default async function DashboardPage({ searchParams }: DashboardPageProps
             </CardContent>
           </Card>
         ) : (
-          <Card className="rounded-[1.75rem] border border-primary/10 bg-primary py-0 text-primary-foreground shadow-[0_12px_40px_rgba(22,58,43,0.18)]">
+          <Card tone="primary" elevation="raised" className="py-0">
             <CardContent className="flex flex-col gap-4 px-6 py-5 sm:flex-row sm:items-center sm:justify-between">
               <div>
                 <p className="font-semibold">Je instellingen kun je nu ook los beheren.</p>
diff --git a/app/globals.css b/app/globals.css
index d653f32..e0ce5d9 100644
--- a/app/globals.css
+++ b/app/globals.css
@@ -5,42 +5,52 @@
 @custom-variant dark (&:is(.dark *));
 
 :root {
-  --font-display: "Iowan Old Style", "Palatino Linotype", "URW Palladio L",
-    Palatino, Georgia, serif;
-  --font-body: "Inter", "Aptos", "Segoe UI", "Helvetica Neue", Arial,
-    sans-serif;
-  --background: #f5f4ee;
-  --foreground: #0f172a;
-  --card: rgb(255 255 255 / 0.84);
-  --card-foreground: #0f172a;
-  --popover: #ffffff;
-  --popover-foreground: #0f172a;
-  --primary: #163a2b;
-  --primary-foreground: #effaf3;
-  --secondary: #e5ecde;
-  --secondary-foreground: #163a2b;
-  --muted: #eef2e6;
-  --muted-foreground: #51606f;
-  --accent: #dbe7d1;
-  --accent-foreground: #163a2b;
-  --destructive: #b91c1c;
-  --border: rgb(15 23 42 / 0.1);
-  --input: rgb(15 23 42 / 0.12);
-  --ring: #5d8a67;
-  --chart-1: #163a2b;
-  --chart-2: #5d8a67;
-  --chart-3: #90a955;
-  --chart-4: #b7c5a4;
-  --chart-5: #d7dfce;
-  --radius: 1rem;
-  --sidebar: #fbfaf5;
-  --sidebar-foreground: #0f172a;
-  --sidebar-primary: #163a2b;
-  --sidebar-primary-foreground: #effaf3;
-  --sidebar-accent: #dbe7d1;
-  --sidebar-accent-foreground: #163a2b;
-  --sidebar-border: rgb(15 23 42 / 0.08);
-  --sidebar-ring: #5d8a67;
+  --font-body: var(--font-inter-tight), ui-sans-serif, system-ui, sans-serif;
+  --font-display: var(--font-body);
+  --font-mono: var(--font-plex-mono), ui-monospace, monospace;
+
+  --background: oklch(97% 0.008 80);
+  --foreground: oklch(22% 0.03 262);
+  --card: oklch(99% 0.004 80);
+  --card-foreground: oklch(22% 0.03 262);
+  --popover: oklch(100% 0 0);
+  --popover-foreground: oklch(22% 0.03 262);
+
+  --primary: oklch(44% 0.11 262);
+  --primary-foreground: oklch(98% 0.01 262);
+  --secondary: oklch(92% 0.03 262);
+  --secondary-foreground: oklch(44% 0.11 262);
+  --muted: oklch(95% 0.012 82);
+  --muted-foreground: oklch(58% 0.015 262);
+  --accent: oklch(92% 0.03 262);
+  --accent-foreground: oklch(44% 0.11 262);
+
+  --destructive: oklch(58% 0.16 25);
+  --success: oklch(62% 0.09 155);
+  --warning: oklch(72% 0.1 70);
+
+  --border: oklch(22% 0.03 262 / 0.1);
+  --input: oklch(22% 0.03 262 / 0.12);
+  --ring: oklch(44% 0.11 262);
+
+  --chart-1: oklch(44% 0.11 262);
+  --chart-2: oklch(60% 0.09 262);
+  --chart-3: oklch(70% 0.1 50);
+  --chart-4: oklch(62% 0.09 155);
+  --chart-5: oklch(80% 0.03 262);
+
+  --radius: 14px;
+  --shadow-1: 0 1px 3px oklch(22% 0.03 262 / 0.1), 0 10px 30px oklch(22% 0.03 262 / 0.06);
+  --shadow-2: 0 4px 16px oklch(22% 0.03 262 / 0.14), 0 18px 45px oklch(22% 0.03 262 / 0.12);
+  --shadow-3: 0 24px 60px oklch(22% 0.03 262 / 0.18);
+  --sidebar: oklch(96.5% 0.01 80);
+  --sidebar-foreground: oklch(22% 0.03 262);
+  --sidebar-primary: oklch(44% 0.11 262);
+  --sidebar-primary-foreground: oklch(98% 0.01 262);
+  --sidebar-accent: oklch(92% 0.03 262);
+  --sidebar-accent-foreground: oklch(44% 0.11 262);
+  --sidebar-border: oklch(22% 0.03 262 / 0.08);
+  --sidebar-ring: oklch(44% 0.11 262);
 }
 
 * {
@@ -79,6 +89,8 @@ a {
   --color-chart-3: var(--chart-3);
   --color-chart-2: var(--chart-2);
   --color-chart-1: var(--chart-1);
+  --color-warning: var(--warning);
+  --color-success: var(--success);
   --color-ring: var(--ring);
   --color-input: var(--input);
   --color-border: var(--border);
@@ -97,47 +109,60 @@ a {
   --color-card: var(--card);
   --color-foreground: var(--foreground);
   --color-background: var(--background);
-  --radius-sm: calc(var(--radius) * 0.6);
-  --radius-md: calc(var(--radius) * 0.8);
+  --font-mono: var(--font-plex-mono), ui-monospace, monospace;
+  --radius-sm: 8px;
+  --radius-md: 11px;
   --radius-lg: var(--radius);
-  --radius-xl: calc(var(--radius) * 1.4);
-  --radius-2xl: calc(var(--radius) * 1.8);
-  --radius-3xl: calc(var(--radius) * 2.2);
-  --radius-4xl: calc(var(--radius) * 2.6);
+  --radius-xl: 21px;
+  --radius-2xl: 25px;
+  --radius-3xl: 32px;
+  --radius-4xl: 40px;
+  --radius-full: 9999px;
 }
 
 .dark {
-  --background: #111927;
-  --foreground: #eef6f0;
-  --card: rgb(17 25 39 / 0.84);
-  --card-foreground: #eef6f0;
-  --popover: #152131;
-  --popover-foreground: #eef6f0;
-  --primary: #d9f2de;
-  --primary-foreground: #133225;
-  --secondary: #243244;
-  --secondary-foreground: #eef6f0;
-  --muted: #243244;
-  --muted-foreground: #b1bec8;
-  --accent: #31485b;
-  --accent-foreground: #eef6f0;
-  --destructive: #ef4444;
-  --border: rgb(255 255 255 / 0.12);
-  --input: rgb(255 255 255 / 0.14);
-  --ring: #88b593;
-  --chart-1: #d9f2de;
-  --chart-2: #88b593;
-  --chart-3: #90a955;
-  --chart-4: #51606f;
-  --chart-5: #243244;
-  --sidebar: #152131;
-  --sidebar-foreground: #eef6f0;
-  --sidebar-primary: #d9f2de;
-  --sidebar-primary-foreground: #133225;
-  --sidebar-accent: #243244;
-  --sidebar-accent-foreground: #eef6f0;
-  --sidebar-border: rgb(255 255 255 / 0.12);
-  --sidebar-ring: #88b593;
+  --background: oklch(17% 0.02 262);
+  --foreground: oklch(96% 0.008 80);
+  --card: oklch(22% 0.025 262);
+  --card-foreground: oklch(96% 0.008 80);
+  --popover: oklch(22% 0.025 262);
+  --popover-foreground: oklch(96% 0.008 80);
+
+  --primary: oklch(78% 0.08 262);
+  --primary-foreground: oklch(20% 0.03 262);
+  --secondary: oklch(28% 0.03 262);
+  --secondary-foreground: oklch(96% 0.008 80);
+  --muted: oklch(26% 0.025 262);
+  --muted-foreground: oklch(70% 0.015 262);
+  --accent: oklch(30% 0.04 262);
+  --accent-foreground: oklch(96% 0.008 80);
+
+  --destructive: oklch(70% 0.16 25);
+  --success: oklch(74% 0.09 155);
+  --warning: oklch(80% 0.1 70);
+
+  --border: oklch(100% 0 0 / 0.1);
+  --input: oklch(100% 0 0 / 0.1);
+  --ring: oklch(78% 0.08 262);
+
+  --chart-1: oklch(78% 0.08 262);
+  --chart-2: oklch(60% 0.09 262);
+  --chart-3: oklch(80% 0.1 70);
+  --chart-4: oklch(74% 0.09 155);
+  --chart-5: oklch(36% 0.03 262);
+
+  --shadow-1: 0 1px 3px oklch(0% 0 0 / 0.24), 0 10px 30px oklch(0% 0 0 / 0.2);
+  --shadow-2: 0 4px 16px oklch(0% 0 0 / 0.28), 0 18px 45px oklch(0% 0 0 / 0.24);
+  --shadow-3: 0 24px 60px oklch(0% 0 0 / 0.32);
+
+  --sidebar: oklch(20% 0.022 262);
+  --sidebar-foreground: oklch(96% 0.008 80);
+  --sidebar-primary: oklch(78% 0.08 262);
+  --sidebar-primary-foreground: oklch(20% 0.03 262);
+  --sidebar-accent: oklch(28% 0.03 262);
+  --sidebar-accent-foreground: oklch(96% 0.008 80);
+  --sidebar-border: oklch(100% 0 0 / 0.1);
+  --sidebar-ring: oklch(78% 0.08 262);
 }
 
 @layer base {
@@ -152,12 +177,107 @@ a {
     @apply font-sans;
     background: var(--background);
     color: var(--foreground);
+    color-scheme: light;
   }
   body {
     @apply bg-background text-foreground;
     margin: 0;
     min-height: 100vh;
     font-family: var(--font-body), sans-serif;
+    line-height: 1.7;
+    font-variant-numeric: tabular-nums;
     -webkit-font-smoothing: antialiased;
+    text-rendering: optimizeLegibility;
+  }
+  html.dark {
+    color-scheme: dark;
+  }
+  h1 {
+    letter-spacing: -0.03em;
+    line-height: 1.08;
+  }
+  h2 {
+    letter-spacing: -0.02em;
+    line-height: 1.2;
+  }
+  h3 {
+    line-height: 1.3;
+  }
+  code,
+  kbd,
+  samp,
+  pre {
+    font-family: var(--font-mono), monospace;
+    font-variant-numeric: tabular-nums;
+  }
+}
+
+@layer components {
+  .app-page {
+    @apply min-h-screen px-6 py-10 text-foreground sm:px-8;
+    background-color: var(--background);
+    background-image:
+      radial-gradient(
+        circle at top,
+        color-mix(in oklab, var(--primary) 16%, transparent) 0%,
+        transparent 34%
+      ),
+      linear-gradient(
+        180deg,
+        color-mix(in oklab, var(--background) 96%, var(--secondary) 4%) 0%,
+        color-mix(in oklab, var(--background) 86%, var(--secondary) 14%) 100%
+      );
+  }
+
+  .dark .app-page {
+    background-image:
+      radial-gradient(
+        circle at top,
+        color-mix(in oklab, var(--primary) 22%, transparent) 0%,
+        transparent 38%
+      ),
+      linear-gradient(
+        180deg,
+        color-mix(in oklab, var(--background) 96%, var(--secondary) 4%) 0%,
+        color-mix(in oklab, var(--background) 88%, var(--secondary) 12%) 100%
+      );
+  }
+
+  .app-page-header {
+    @apply flex flex-col gap-5 rounded-[var(--radius-4xl)] p-6 sm:flex-row sm:items-start sm:justify-between sm:p-8;
+    border: 1px solid color-mix(in oklab, var(--border) 88%, transparent);
+    background: color-mix(in oklab, var(--card) 84%, transparent);
+    box-shadow: var(--shadow-2);
+    backdrop-filter: blur(18px);
+  }
+
+  .app-page-breadcrumb {
+    @apply flex flex-wrap items-center gap-3 text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground;
+  }
+
+  .app-page-link {
+    @apply transition hover:text-foreground;
+  }
+
+  .app-page-copy {
+    @apply mt-4 max-w-2xl text-base leading-8 text-muted-foreground;
+  }
+
+  .app-panel-primary {
+    @apply text-primary-foreground;
+    border: 1px solid color-mix(in oklab, var(--primary) 16%, transparent);
+    background: var(--primary);
+    box-shadow: var(--shadow-2);
+  }
+}
+
+@media (prefers-reduced-motion: reduce) {
+  *,
+  *::before,
+  *::after {
+    animation-duration: 0.01ms !important;
+    animation-iteration-count: 1 !important;
+    scroll-behavior: auto !important;
+    transition-duration: 0.01ms !important;
   }
 }
diff --git a/app/layout.tsx b/app/layout.tsx
index d3ff4a6..20bef26 100644
--- a/app/layout.tsx
+++ b/app/layout.tsx
@@ -1,7 +1,22 @@
 import type { Metadata } from "next";
+import { IBM_Plex_Mono, Inter_Tight } from "next/font/google";
+import { ThemeProvider } from "@/components/theme-provider";
 import { Toaster } from "@/components/ui/sonner";
 import "./globals.css";
 
+const fontBody = Inter_Tight({
+  subsets: ["latin"],
+  variable: "--font-inter-tight",
+  display: "swap",
+});
+
+const fontMono = IBM_Plex_Mono({
+  subsets: ["latin"],
+  weight: ["400", "500"],
+  variable: "--font-plex-mono",
+  display: "swap",
+});
+
 export const metadata: Metadata = {
   title: "Inspannings Monitor",
   description:
@@ -14,10 +29,21 @@ export default function RootLayout({
   children: React.ReactNode;
 }>) {
   return (
-    <html lang="nl">
-      <body className="min-h-screen">
-        {children}
-        <Toaster position="top-right" richColors closeButton />
+    <html
+      lang="nl"
+      suppressHydrationWarning
+      className={`${fontBody.variable} ${fontMono.variable}`}
+    >
+      <body className="min-h-screen antialiased">
+        <ThemeProvider
+          attribute="class"
+          defaultTheme="dark"
+          enableSystem
+          disableTransitionOnChange
+        >
+          {children}
+          <Toaster position="top-right" richColors closeButton />
+        </ThemeProvider>
       </body>
     </html>
   );
diff --git a/app/login/page.tsx b/app/login/page.tsx
index 1cdf584..8a229c6 100644
--- a/app/login/page.tsx
+++ b/app/login/page.tsx
@@ -41,7 +41,7 @@ export default async function LoginPage({ searchParams }: LoginPageProps) {
       footer={
         <p>
           Nog geen account?{" "}
-          <Link href={signUpHref} className="font-semibold text-emerald-900">
+          <Link href={signUpHref} className="font-semibold text-primary">
             Maak er een aan
           </Link>
         </p>
@@ -50,7 +50,7 @@ export default async function LoginPage({ searchParams }: LoginPageProps) {
       <StatusToastBridge toast={statusToast} paramKeys={["error", "status"]} />
 
       {!authState.isConfigured ? (
-        <Alert className="rounded-[1.5rem] border-sky-200 bg-sky-50 text-sky-950 [&_svg]:text-sky-700">
+        <Alert variant="info">
           <AlertDescription className="leading-7 text-current">
             Voeg eerst je Supabase-gegevens toe in `.env.local` op basis van `.env.example`.
           </AlertDescription>
@@ -60,7 +60,7 @@ export default async function LoginPage({ searchParams }: LoginPageProps) {
           <input type="hidden" name="next" value={next} />
 
           <div className="space-y-2">
-            <Label htmlFor="email" className="text-slate-800">
+            <Label htmlFor="email" className="text-foreground">
               E-mailadres
             </Label>
             <Input
@@ -74,7 +74,7 @@ export default async function LoginPage({ searchParams }: LoginPageProps) {
           </div>
 
           <div className="space-y-2">
-            <Label htmlFor="password" className="text-slate-800">
+            <Label htmlFor="password" className="text-foreground">
               Wachtwoord
             </Label>
             <Input
diff --git a/app/onboarding/page.tsx b/app/onboarding/page.tsx
index 187572f..558bba5 100644
--- a/app/onboarding/page.tsx
+++ b/app/onboarding/page.tsx
@@ -41,7 +41,7 @@ export default async function OnboardingPage({ searchParams }: OnboardingPagePro
   );
 
   return (
-    <main className="min-h-screen bg-[radial-gradient(circle_at_top,_rgba(167,201,87,0.22),_transparent_32%),linear-gradient(180deg,_#f5f4ee_0%,_#eef2e6_100%)] px-6 py-10 text-slate-900 sm:px-8">
+    <main className="app-page">
       <div className="mx-auto flex max-w-6xl flex-col gap-8">
         <StatusToastBridge toast={statusToast} paramKeys={["error", "status"]} />
         <OnboardingFlow profileBundle={profileBundle} />
diff --git a/app/page.tsx b/app/page.tsx
index 7ac5a2c..1d9ed9d 100644
--- a/app/page.tsx
+++ b/app/page.tsx
@@ -51,11 +51,11 @@ export default async function Home({ searchParams }: HomePageProps) {
   );
 
   return (
-    <main className="min-h-screen bg-[radial-gradient(circle_at_top,_rgba(167,201,87,0.22),_transparent_32%),linear-gradient(180deg,_#f5f4ee_0%,_#eef2e6_100%)] text-slate-900">
+    <main className="app-page">
       <div className="mx-auto flex min-h-screen w-full max-w-6xl flex-col px-6 py-10 sm:px-8 lg:px-10">
-        <header className="mb-10 flex items-center justify-between border-b border-black/10 pb-5">
+        <header className="mb-10 flex items-center justify-between border-b border-border/70 pb-5">
           <div>
-            <p className="text-xs font-semibold uppercase tracking-[0.24em] text-slate-600">
+            <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
               Inspannings Monitor
             </p>
             <h1 className="font-[family-name:var(--font-display)] text-3xl leading-tight sm:text-5xl">
@@ -104,7 +104,7 @@ export default async function Home({ searchParams }: HomePageProps) {
                 </>
               )
             ) : (
-              <span className="rounded-full border border-amber-900/15 bg-amber-50 px-4 py-2 text-sm font-medium text-amber-900 shadow-sm">
+              <span className="rounded-full border border-warning/30 bg-warning/14 px-4 py-2 text-sm font-medium text-foreground shadow-[var(--shadow-1)]">
                 Supabase nog niet geconfigureerd
               </span>
             )}
@@ -114,9 +114,9 @@ export default async function Home({ searchParams }: HomePageProps) {
         <StatusToastBridge toast={statusToast} paramKeys={["error", "status"]} />
 
         <section className="grid gap-6 lg:grid-cols-[1.35fr_0.95fr]">
-          <Card className="rounded-[2rem] border border-border/60 bg-card/90 py-0 shadow-[0_18px_60px_rgba(71,85,105,0.12)] backdrop-blur">
+          <Card elevation="raised" className="rounded-[var(--radius-4xl)] py-0 backdrop-blur">
             <CardContent className="p-6 sm:p-8">
-              <p className="mb-4 max-w-2xl text-lg leading-8 text-slate-700">
+              <p className="mb-4 max-w-2xl text-lg leading-8 text-muted-foreground">
               De projectbasis staat nu, inclusief de eerste auth-laag via Supabase.
               Release 1 blijft bewust smal: publieke landing, aparte login/signup
               routes en een eerste protected dashboard als basis voor de volgende stories.
@@ -125,7 +125,8 @@ export default async function Home({ searchParams }: HomePageProps) {
                 {loopSteps.map((step, index) => (
                   <Card
                     key={step.title}
-                    className="rounded-[1.5rem] border border-border/50 bg-background/80 py-0 shadow-none"
+                    tone="subtle"
+                    className="rounded-[var(--radius-2xl)] py-0 shadow-none"
                   >
                     <CardHeader className="pb-0">
                       <p className="text-xs font-semibold uppercase tracking-[0.22em] text-muted-foreground">
@@ -146,7 +147,7 @@ export default async function Home({ searchParams }: HomePageProps) {
             </CardContent>
           </Card>
 
-          <Card className="rounded-[2rem] border border-primary/10 bg-primary py-0 text-primary-foreground shadow-[0_18px_60px_rgba(22,58,43,0.18)]">
+          <Card tone="primary" elevation="raised" className="rounded-[var(--radius-4xl)] py-0">
             <CardHeader className="px-6 pt-7 sm:px-8">
               <p className="text-xs font-semibold uppercase tracking-[0.24em] text-primary-foreground/75">
                 Release 1 focus
@@ -156,7 +157,7 @@ export default async function Home({ searchParams }: HomePageProps) {
               {releaseFocus.map((item) => (
                 <Card
                   key={item}
-                  className="rounded-[1.5rem] border border-white/10 bg-white/8 py-0 text-primary-foreground shadow-none"
+                  className="rounded-[var(--radius-2xl)] border-white/10 bg-white/8 py-0 text-primary-foreground shadow-none"
                 >
                   <CardContent className="px-4 py-3 text-sm leading-7">{item}</CardContent>
                 </Card>
@@ -174,31 +175,31 @@ export default async function Home({ searchParams }: HomePageProps) {
           </Card>
         </section>
 
-        <Card className="mt-8 rounded-[2rem] border border-border/60 bg-card/80 py-0 shadow-[0_10px_45px_rgba(71,85,105,0.08)] backdrop-blur">
+        <Card tone="subtle" className="mt-8 rounded-[var(--radius-4xl)] py-0 backdrop-blur">
           <CardContent className="grid gap-5 p-6 sm:grid-cols-2 lg:grid-cols-4">
             <div>
               <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
                 Volgende story
               </p>
-              <p className="mt-2 font-semibold text-slate-900">ST-201 Ochtendcheck-in</p>
+              <p className="mt-2 font-semibold text-foreground">ST-201 Ochtendcheck-in</p>
             </div>
             <div>
               <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
                 Doelgroep
               </p>
-              <p className="mt-2 font-semibold text-slate-900">Volwassen individuele gebruikers</p>
+              <p className="mt-2 font-semibold text-foreground">Volwassen individuele gebruikers</p>
             </div>
             <div>
               <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
                 Positionering
               </p>
-              <p className="mt-2 font-semibold text-slate-900">Wellness / self-management</p>
+              <p className="mt-2 font-semibold text-foreground">Wellness / self-management</p>
             </div>
             <div>
               <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
                 Status
               </p>
-              <p className="mt-2 font-semibold text-slate-900">Auth, onboarding en settings actief</p>
+              <p className="mt-2 font-semibold text-foreground">Auth, onboarding en settings actief</p>
             </div>
           </CardContent>
         </Card>
diff --git a/app/planning/page.tsx b/app/planning/page.tsx
index a6793d8..e508d71 100644
--- a/app/planning/page.tsx
+++ b/app/planning/page.tsx
@@ -70,14 +70,14 @@ export default async function PlanningPage({ searchParams }: PlanningPageProps)
   );
 
   return (
-    <main className="min-h-screen bg-[radial-gradient(circle_at_top,_rgba(167,201,87,0.22),_transparent_32%),linear-gradient(180deg,_#f5f4ee_0%,_#eef2e6_100%)] px-6 py-10 text-slate-900 sm:px-8">
+    <main className="app-page">
       <div className="mx-auto flex max-w-6xl flex-col gap-8">
         <StatusToastBridge toast={statusToast} paramKeys={["error", "status"]} />
 
-        <header className="flex flex-col gap-5 rounded-[2rem] border border-black/10 bg-white/75 p-6 shadow-[0_18px_60px_rgba(71,85,105,0.12)] backdrop-blur sm:flex-row sm:items-start sm:justify-between sm:p-8">
+        <header className="app-page-header">
           <div>
-            <div className="flex flex-wrap items-center gap-3 text-xs font-semibold uppercase tracking-[0.24em] text-slate-500">
-              <Link href="/dashboard" className="transition hover:text-slate-900">
+            <div className="app-page-breadcrumb">
+              <Link href="/dashboard" className="app-page-link">
                 Dashboard
               </Link>
               <span>/</span>
@@ -86,7 +86,7 @@ export default async function PlanningPage({ searchParams }: PlanningPageProps)
             <h1 className="mt-3 font-[family-name:var(--font-display)] text-4xl leading-tight">
               Plan vandaag bewust klein
             </h1>
-            <p className="mt-4 max-w-2xl text-base leading-8 text-slate-700">
+            <p className="app-page-copy">
               Voeg alleen activiteiten toe die vandaag echt relevant zijn. Houd de lijst licht,
               zodat je later goed kunt bijsturen zonder druk op te bouwen.
             </p>
@@ -118,12 +118,12 @@ export default async function PlanningPage({ searchParams }: PlanningPageProps)
           />
 
           <aside className="space-y-5">
-            <Card className="rounded-[1.75rem] border border-border/60 bg-card/90 py-0 shadow-[0_12px_40px_rgba(71,85,105,0.08)]">
+            <Card className="py-0">
               <CardHeader className="pb-0">
                 <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
                   Vandaag
                 </p>
-                <CardTitle className="text-lg text-slate-900">
+                <CardTitle className="text-lg text-foreground">
                   {planningPageData.activities.length === 0
                     ? "Start met een eerste activiteit"
                     : `${planningPageData.activities.length} activiteiten ingepland`}
@@ -149,7 +149,7 @@ export default async function PlanningPage({ searchParams }: PlanningPageProps)
 
             <EnergyMeterCard meter={planningMeter} />
 
-            <Card className="rounded-[1.75rem] border border-primary/15 bg-primary py-0 text-primary-foreground shadow-[0_12px_40px_rgba(22,58,43,0.18)]">
+            <Card tone="primary" elevation="raised" className="py-0">
               <CardHeader className="pb-0">
                 <p className="text-xs font-semibold uppercase tracking-[0.24em] text-primary-foreground/75">
                   Bewuste grens
diff --git a/app/settings/page.tsx b/app/settings/page.tsx
index 12598aa..2149471 100644
--- a/app/settings/page.tsx
+++ b/app/settings/page.tsx
@@ -57,14 +57,14 @@ export default async function SettingsPage({ searchParams }: SettingsPageProps)
     "Ingelogde gebruiker";
 
   return (
-    <main className="min-h-screen bg-[radial-gradient(circle_at_top,_rgba(167,201,87,0.22),_transparent_32%),linear-gradient(180deg,_#f5f4ee_0%,_#eef2e6_100%)] px-6 py-10 text-slate-900 sm:px-8">
+    <main className="app-page">
       <div className="mx-auto flex max-w-6xl flex-col gap-8">
         <StatusToastBridge toast={statusToast} paramKeys={["error", "status"]} />
 
-        <header className="flex flex-col gap-5 rounded-[2rem] border border-black/10 bg-white/75 p-6 shadow-[0_18px_60px_rgba(71,85,105,0.12)] backdrop-blur sm:flex-row sm:items-start sm:justify-between sm:p-8">
+        <header className="app-page-header">
           <div>
-            <div className="flex flex-wrap items-center gap-3 text-xs font-semibold uppercase tracking-[0.24em] text-slate-500">
-              <Link href="/dashboard" className="transition hover:text-slate-900">
+            <div className="app-page-breadcrumb">
+              <Link href="/dashboard" className="app-page-link">
                 Dashboard
               </Link>
               <span>/</span>
@@ -73,7 +73,7 @@ export default async function SettingsPage({ searchParams }: SettingsPageProps)
             <h1 className="mt-3 font-[family-name:var(--font-display)] text-4xl leading-tight">
               Instellingen
             </h1>
-            <p className="mt-4 max-w-2xl text-base leading-8 text-slate-700">
+            <p className="app-page-copy">
               Pas je basisvoorkeuren rustig aan. Alles blijft beperkt tot jouw eigen
               account en de wellness-first scope van release 1.
             </p>
@@ -101,12 +101,12 @@ export default async function SettingsPage({ searchParams }: SettingsPageProps)
           <SettingsForm profileBundle={profileBundle} />
 
           <aside className="space-y-5">
-            <Card className="rounded-[1.75rem] border border-border/60 bg-card/90 py-0 shadow-[0_12px_40px_rgba(71,85,105,0.08)]">
+            <Card className="py-0">
               <CardHeader className="pb-0">
                 <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
                   Account
                 </p>
-                <CardTitle className="text-lg text-slate-900">{profileTitle}</CardTitle>
+                <CardTitle className="text-lg text-foreground">{profileTitle}</CardTitle>
               </CardHeader>
               <CardContent className="pb-6">
                 <CardDescription className="text-sm leading-7 text-muted-foreground">
@@ -115,12 +115,12 @@ export default async function SettingsPage({ searchParams }: SettingsPageProps)
               </CardContent>
             </Card>
 
-            <Card className="rounded-[1.75rem] border border-border/60 bg-card/90 py-0 shadow-[0_12px_40px_rgba(71,85,105,0.08)]">
+            <Card className="py-0">
               <CardHeader className="pb-0">
                 <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
                   Huidige status
                 </p>
-                <CardTitle className="text-lg text-slate-900">
+                <CardTitle className="text-lg text-foreground">
                   Onboarding {profileBundle.profile.onboardingCompleted ? "afgerond" : "later afronden"}
                 </CardTitle>
               </CardHeader>
diff --git a/app/sign-up/page.tsx b/app/sign-up/page.tsx
index 6cb17a0..9163af2 100644
--- a/app/sign-up/page.tsx
+++ b/app/sign-up/page.tsx
@@ -41,7 +41,7 @@ export default async function SignUpPage({ searchParams }: SignUpPageProps) {
       footer={
         <p>
           Heb je al een account?{" "}
-          <Link href={loginHref} className="font-semibold text-emerald-900">
+          <Link href={loginHref} className="font-semibold text-primary">
             Log dan in
           </Link>
         </p>
@@ -50,7 +50,7 @@ export default async function SignUpPage({ searchParams }: SignUpPageProps) {
       <StatusToastBridge toast={statusToast} paramKeys={["error", "status"]} />
 
       {!authState.isConfigured ? (
-        <Alert className="rounded-[1.5rem] border-sky-200 bg-sky-50 text-sky-950 [&_svg]:text-sky-700">
+        <Alert variant="info">
           <AlertDescription className="leading-7 text-current">
             Voeg eerst je Supabase-gegevens toe in `.env.local` op basis van `.env.example`.
           </AlertDescription>
@@ -60,7 +60,7 @@ export default async function SignUpPage({ searchParams }: SignUpPageProps) {
           <input type="hidden" name="next" value={next} />
 
           <div className="space-y-2">
-            <Label htmlFor="email" className="text-slate-800">
+            <Label htmlFor="email" className="text-foreground">
               E-mailadres
             </Label>
             <Input
@@ -74,7 +74,7 @@ export default async function SignUpPage({ searchParams }: SignUpPageProps) {
           </div>
 
           <div className="space-y-2">
-            <Label htmlFor="password" className="text-slate-800">
+            <Label htmlFor="password" className="text-foreground">
               Wachtwoord
             </Label>
             <Input
diff --git a/app/wizard-test/page.tsx b/app/wizard-test/page.tsx
index b5a9794..2e0151b 100644
--- a/app/wizard-test/page.tsx
+++ b/app/wizard-test/page.tsx
@@ -22,7 +22,7 @@ export default async function WizardTestPage() {
   }
 
   return (
-    <main className="min-h-screen bg-[radial-gradient(circle_at_top,_rgba(167,201,87,0.22),_transparent_32%),linear-gradient(180deg,_#f5f4ee_0%,_#eef2e6_100%)] px-6 py-10 text-slate-900 sm:px-8">
+    <main className="app-page">
       <div className="mx-auto flex max-w-6xl flex-col gap-8">
         <TestWizardFlow />
       </div>
diff --git a/components/auth/auth-notice.tsx b/components/auth/auth-notice.tsx
index 8a33829..d5bed75 100644
--- a/components/auth/auth-notice.tsx
+++ b/components/auth/auth-notice.tsx
@@ -9,16 +9,18 @@ type AuthNoticeProps = {
 
 const toneStyles = {
   error: {
-    className: "mb-5 border-rose-200 bg-rose-50 text-rose-950 [&_svg]:text-rose-700",
+    variant: "destructive" as const,
+    className: "mb-5",
     icon: AlertCircleIcon,
   },
   success: {
-    className:
-      "mb-5 border-emerald-200 bg-emerald-50 text-emerald-950 [&_svg]:text-emerald-700",
+    variant: "success" as const,
+    className: "mb-5",
     icon: CheckCircle2Icon,
   },
   info: {
-    className: "mb-5 border-sky-200 bg-sky-50 text-sky-950 [&_svg]:text-sky-700",
+    variant: "info" as const,
+    className: "mb-5",
     icon: InfoIcon,
   },
 };
@@ -32,7 +34,7 @@ export function AuthNotice({ notice }: AuthNoticeProps) {
   const Icon = tone.icon;
 
   return (
-    <Alert className={cn("rounded-[1.5rem] px-4 py-3", tone.className)}>
+    <Alert variant={tone.variant} className={cn("px-4 py-3", tone.className)}>
       <Icon className="size-4" />
       <AlertDescription className="leading-7 text-current">
         {notice.text}
diff --git a/components/auth/auth-panel.tsx b/components/auth/auth-panel.tsx
index a16192c..2575226 100644
--- a/components/auth/auth-panel.tsx
+++ b/components/auth/auth-panel.tsx
@@ -21,22 +21,22 @@ export function AuthPanel({
   footer,
 }: AuthPanelProps) {
   return (
-    <main className="min-h-screen bg-[radial-gradient(circle_at_top,_rgba(167,201,87,0.22),_transparent_32%),linear-gradient(180deg,_#f5f4ee_0%,_#eef2e6_100%)] px-6 py-10 text-slate-900 sm:px-8">
+    <main className="app-page">
       <div className="mx-auto grid min-h-[calc(100vh-5rem)] max-w-6xl gap-6 lg:grid-cols-[1.05fr_0.95fr]">
-        <section className="flex flex-col justify-between rounded-[2rem] border border-black/10 bg-emerald-950 p-7 text-emerald-50 shadow-[0_18px_60px_rgba(6,78,59,0.18)] sm:p-9">
+        <section className="app-panel-primary flex flex-col justify-between rounded-[var(--radius-4xl)] p-7 sm:p-9">
           <div>
-            <p className="text-xs font-semibold uppercase tracking-[0.24em] text-emerald-200/80">
+            <p className="text-xs font-semibold uppercase tracking-[0.24em] text-primary-foreground/72">
               {eyebrow}
             </p>
             <h1 className="mt-4 font-[family-name:var(--font-display)] text-4xl leading-tight sm:text-5xl">
               {title}
             </h1>
-            <p className="mt-5 max-w-xl text-base leading-8 text-emerald-50/85">
+            <p className="mt-5 max-w-xl text-base leading-8 text-primary-foreground/85">
               {description}
             </p>
           </div>
 
-          <div className="mt-10 rounded-[1.5rem] border border-white/10 bg-white/8 p-5 text-sm leading-7 text-emerald-50/90">
+          <div className="mt-10 rounded-[var(--radius-2xl)] border border-white/10 bg-white/8 p-5 text-sm leading-7 text-primary-foreground/90">
             <p className="font-semibold">Release 1 blijft bewust licht.</p>
             <ul className="mt-3 space-y-2">
               <li>Wellness-first en alleen voor individuele gebruikers</li>
@@ -47,7 +47,7 @@ export function AuthPanel({
         </section>
 
         <section className="flex items-center">
-          <Card className="w-full rounded-[2rem] border border-border/60 bg-card/90 py-0 shadow-[0_18px_60px_rgba(71,85,105,0.12)] backdrop-blur">
+          <Card elevation="raised" className="w-full rounded-[var(--radius-4xl)] py-0 backdrop-blur">
             <CardContent className="p-6 sm:p-8">
               <div className="mb-6 flex items-center justify-between gap-3">
               <Link
diff --git a/components/check-in/check-in-card.tsx b/components/check-in/check-in-card.tsx
index c8ffb2b..7fe2f1b 100644
--- a/components/check-in/check-in-card.tsx
+++ b/components/check-in/check-in-card.tsx
@@ -34,12 +34,12 @@ export function CheckInCard({ todayCheckIn }: CheckInCardProps) {
     : "Leg je energiestart en slaapkwaliteit van vandaag vast.";
 
   return (
-    <Card className="rounded-[1.75rem] border border-border/60 bg-card/90 py-0 shadow-[0_12px_40px_rgba(71,85,105,0.08)]">
+    <Card className="py-0">
       <CardHeader className="pb-0">
         <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
           Ochtendcheck-in
         </p>
-        <CardTitle className="text-lg text-slate-900">{title}</CardTitle>
+        <CardTitle className="text-lg text-foreground">{title}</CardTitle>
       </CardHeader>
       <CardContent className="space-y-4 pb-6">
         <CardDescription className="text-sm leading-7 text-muted-foreground">
diff --git a/components/check-in/check-in-form.tsx b/components/check-in/check-in-form.tsx
index a5ece0a..544e324 100644
--- a/components/check-in/check-in-form.tsx
+++ b/components/check-in/check-in-form.tsx
@@ -58,12 +58,12 @@ export function CheckInForm({ todayCheckIn }: CheckInFormProps) {
       <input type="hidden" name="energyScore" value={energyScore ?? ""} />
       <input type="hidden" name="sleepQuality" value={sleepQuality ?? ""} />
 
-      <Card className="rounded-[1.75rem] border border-border/60 bg-card/90 py-0 shadow-[0_18px_60px_rgba(71,85,105,0.1)]">
+      <Card elevation="raised" className="py-0">
         <CardHeader className="pb-0">
           <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
             Ochtendcheck-in
           </p>
-          <CardTitle className="font-[family-name:var(--font-display)] text-3xl text-slate-900">
+          <CardTitle className="font-[family-name:var(--font-display)] text-3xl text-foreground">
             Hoe start je vandaag?
           </CardTitle>
           <CardDescription className="max-w-2xl text-sm leading-7 text-muted-foreground">
@@ -74,21 +74,25 @@ export function CheckInForm({ todayCheckIn }: CheckInFormProps) {
         <CardContent className="space-y-6 pb-6">
           <div className="space-y-3">
             <div className="space-y-1">
-              <Label className="text-sm font-semibold text-slate-900">
+              <Label id="energy-score-group-label" className="text-sm font-semibold text-foreground">
                 Energiescore vandaag
               </Label>
-              <p className="text-sm leading-7 text-muted-foreground">
+              <p className="text-sm leading-7 text-muted-foreground" aria-live="polite">
                 {getEnergyScorePrompt(energyScore)}
               </p>
               {predictedBudget ? (
-                <p className="text-sm leading-7 text-slate-700">
+                <p className="text-sm leading-7 text-foreground/80" aria-live="polite">
                   Voor vandaag geeft dit niveau <strong>{formatEnergyLevelLabel(predictedBudget.energyLevel).toLowerCase()}</strong> en een startbudget van{" "}
                   <strong>{predictedBudget.dailyBudget} punten</strong>.
                 </p>
               ) : null}
             </div>
 
-            <div className="grid grid-cols-5 gap-2 sm:grid-cols-10">
+            <div
+              className="grid grid-cols-5 gap-2 sm:grid-cols-10"
+              role="group"
+              aria-labelledby="energy-score-group-label"
+            >
               {ENERGY_SCORE_VALUES.map((value) => {
                 const isSelected = energyScore === value;
 
@@ -98,6 +102,7 @@ export function CheckInForm({ todayCheckIn }: CheckInFormProps) {
                     type="button"
                     disabled={isPending}
                     onClick={() => setEnergyScore(value)}
+                    aria-pressed={isSelected}
                     className={cn(
                       buttonVariants({
                         variant: isSelected ? "default" : "outline",
@@ -117,7 +122,7 @@ export function CheckInForm({ todayCheckIn }: CheckInFormProps) {
 
           <div className="space-y-3">
             <div className="space-y-1">
-              <Label className="text-sm font-semibold text-slate-900">
+              <Label id="sleep-quality-group-label" className="text-sm font-semibold text-foreground">
                 Hoe voelde je slaap?
               </Label>
               <p className="text-sm leading-7 text-muted-foreground">
@@ -125,7 +130,11 @@ export function CheckInForm({ todayCheckIn }: CheckInFormProps) {
               </p>
             </div>
 
-            <div className="grid gap-3 sm:grid-cols-3">
+            <div
+              className="grid gap-3 sm:grid-cols-3"
+              role="group"
+              aria-labelledby="sleep-quality-group-label"
+            >
               {SLEEP_QUALITY_OPTIONS.map((option) => {
                 const isSelected = sleepQuality === option.value;
 
@@ -135,11 +144,12 @@ export function CheckInForm({ todayCheckIn }: CheckInFormProps) {
                     type="button"
                     disabled={isPending}
                     onClick={() => setSleepQuality(option.value)}
+                    aria-pressed={isSelected}
                     className={cn(
                       "rounded-[1.25rem] border px-4 py-4 text-left transition",
                       isSelected
-                        ? "border-primary bg-primary text-primary-foreground shadow-[0_12px_30px_rgba(22,58,43,0.18)]"
-                        : "border-border/60 bg-background/80 text-slate-900 hover:border-primary/35",
+                        ? "border-primary bg-primary text-primary-foreground shadow-[var(--shadow-2)]"
+                        : "border-border/60 bg-background/80 text-foreground hover:border-primary/35",
                       isPending && "pointer-events-none opacity-70",
                     )}
                   >
@@ -163,7 +173,7 @@ export function CheckInForm({ todayCheckIn }: CheckInFormProps) {
       </Card>
 
       <div className="flex flex-wrap items-center justify-between gap-3">
-        <p className="text-sm leading-7 text-muted-foreground">
+        <p className="text-sm leading-7 text-muted-foreground" aria-live="polite">
           {isPending
             ? "Je ochtendcheck-in wordt opgeslagen..."
             : todayCheckIn
diff --git a/components/onboarding/onboarding-flow.tsx b/components/onboarding/onboarding-flow.tsx
index 76f6289..9f67b83 100644
--- a/components/onboarding/onboarding-flow.tsx
+++ b/components/onboarding/onboarding-flow.tsx
@@ -84,7 +84,7 @@ export function OnboardingFlow({ profileBundle }: OnboardingFlowProps) {
   const isPending = isCompleting || isSkipping;
 
   const aside = (
-    <Alert className="rounded-[1.5rem] border-white/10 bg-white/8 text-primary-foreground [&_svg]:text-primary-foreground/80">
+    <Alert className="rounded-[var(--radius-2xl)] border-white/10 bg-white/8 text-primary-foreground [&_svg]:text-primary-foreground/80">
       <AlertDescription className="leading-7 text-current">
         <span className="block font-semibold">Release 1 blijft bewust wellness-first.</span>
         <span className="mt-2 block">
diff --git a/components/onboarding/onboarding-step-intro.tsx b/components/onboarding/onboarding-step-intro.tsx
index 897de83..95948c2 100644
--- a/components/onboarding/onboarding-step-intro.tsx
+++ b/components/onboarding/onboarding-step-intro.tsx
@@ -9,7 +9,7 @@ import {
 export function OnboardingStepIntro() {
   return (
     <div className="space-y-4">
-      <Card className="rounded-[1.5rem] border border-border/60 bg-background/80 py-0">
+      <Card tone="subtle" className="py-0 shadow-none">
         <CardHeader className="pb-0">
           <CardTitle className="font-[family-name:var(--font-display)] text-2xl">
             Wat je hier wél krijgt
@@ -23,7 +23,7 @@ export function OnboardingStepIntro() {
         </CardContent>
       </Card>
 
-      <Card className="rounded-[1.5rem] border border-border/60 bg-background/80 py-0">
+      <Card tone="subtle" className="py-0 shadow-none">
         <CardHeader className="pb-0">
           <CardTitle className="font-[family-name:var(--font-display)] text-2xl">
             Wat deze app niet doet
diff --git a/components/onboarding/onboarding-step-preferences.tsx b/components/onboarding/onboarding-step-preferences.tsx
index a529f30..8f3433c 100644
--- a/components/onboarding/onboarding-step-preferences.tsx
+++ b/components/onboarding/onboarding-step-preferences.tsx
@@ -21,10 +21,10 @@ export function OnboardingStepPreferences({
 }: OnboardingStepPreferencesProps) {
   return (
     <div className="space-y-4">
-      <Card className="rounded-[1.5rem] border border-border/60 bg-background/80 py-0">
+      <Card tone="subtle" className="py-0 shadow-none">
         <CardContent className="flex items-start justify-between gap-4 py-5">
           <div className="space-y-1">
-            <Label className="text-sm font-semibold text-slate-900">
+            <Label className="text-sm font-semibold text-foreground">
               Toon energiebudgetpunten
             </Label>
             <p className="text-sm leading-7 text-muted-foreground">
@@ -39,11 +39,11 @@ export function OnboardingStepPreferences({
         </CardContent>
       </Card>
 
-      <Card className="rounded-[1.5rem] border border-border/60 bg-background/80 py-0">
+      <Card tone="subtle" className="py-0 shadow-none">
         <CardContent className="space-y-4 py-5">
           <div className="flex items-start justify-between gap-4">
             <div className="space-y-1">
-              <Label className="text-sm font-semibold text-slate-900">
+              <Label className="text-sm font-semibold text-foreground">
                 Zet een lichte ochtendreminder aan
               </Label>
               <p className="text-sm leading-7 text-muted-foreground">
@@ -63,12 +63,12 @@ export function OnboardingStepPreferences({
             <>
               <Separator />
               <div className="space-y-2">
-                <Label htmlFor="morning-reminder-time" className="text-slate-800">
+                <Label htmlFor="morning-reminder-time" className="text-foreground">
                   Tijdstip voor de ochtendreminder
                 </Label>
                 <Input
                   id="morning-reminder-time"
-                  className="h-12 rounded-[1.25rem] bg-white px-4 text-base md:text-base"
+                  className="h-12 rounded-[1.25rem] bg-background/80 px-4 text-base md:text-base"
                   disabled={disabled}
                   type="time"
                   value={draft.morningReminderTime}
@@ -82,10 +82,10 @@ export function OnboardingStepPreferences({
         </CardContent>
       </Card>
 
-      <Card className="rounded-[1.5rem] border border-border/60 bg-background/80 py-0">
+      <Card tone="subtle" className="py-0 shadow-none">
         <CardContent className="flex items-start justify-between gap-4 py-5">
           <div className="space-y-1">
-            <Label className="text-sm font-semibold text-slate-900">
+            <Label className="text-sm font-semibold text-foreground">
               Sta lichte reflectieprompts toe
             </Label>
             <p className="text-sm leading-7 text-muted-foreground">
diff --git a/components/onboarding/onboarding-step-profile.tsx b/components/onboarding/onboarding-step-profile.tsx
index c40e796..3c12cde 100644
--- a/components/onboarding/onboarding-step-profile.tsx
+++ b/components/onboarding/onboarding-step-profile.tsx
@@ -25,7 +25,7 @@ export function OnboardingStepProfile({
   return (
     <div className="space-y-5">
       <div className="space-y-2">
-        <Label htmlFor="display-name" className="text-slate-800">
+        <Label htmlFor="display-name" className="text-foreground">
           Schermnaam
         </Label>
         <Input
@@ -40,14 +40,14 @@ export function OnboardingStepProfile({
         />
       </div>
 
-      <Alert className="rounded-[1.5rem] border-sky-200 bg-sky-50 text-sky-950 [&_svg]:text-sky-700">
+      <Alert variant="info">
         <AlertDescription className="leading-7 text-current">
           Voertaal voor release 1 staat vast op <strong>Nederlands</strong>.
         </AlertDescription>
       </Alert>
 
       <div className="space-y-2">
-        <Label className="text-slate-800">Timezone</Label>
+        <Label className="text-foreground">Timezone</Label>
         <Select
           disabled={disabled}
           value={draft.timezone}
diff --git a/components/planning/activity-form.tsx b/components/planning/activity-form.tsx
index 37224d1..d2da54e 100644
--- a/components/planning/activity-form.tsx
+++ b/components/planning/activity-form.tsx
@@ -89,12 +89,12 @@ export function ActivityForm({ categories, activities, dailyBudget }: ActivityFo
       <input type="hidden" name="impactLevel" value={impactLevel} />
       <input type="hidden" name="priorityLevel" value={priorityLevel} />
 
-      <Card className="rounded-[1.75rem] border border-border/60 bg-card/90 py-0 shadow-[0_18px_60px_rgba(71,85,105,0.1)]">
+      <Card elevation="raised" className="py-0">
         <CardHeader className="pb-0">
           <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
             Dagplanning
           </p>
-          <CardTitle className="font-[family-name:var(--font-display)] text-3xl text-slate-900">
+          <CardTitle className="font-[family-name:var(--font-display)] text-3xl text-foreground">
             Plan een activiteit voor vandaag
           </CardTitle>
           <CardDescription className="max-w-2xl text-sm leading-7 text-muted-foreground">
@@ -104,7 +104,7 @@ export function ActivityForm({ categories, activities, dailyBudget }: ActivityFo
         </CardHeader>
         <CardContent className="space-y-6 pb-6">
           <div className="space-y-2">
-            <Label htmlFor="activity-name" className="text-slate-800">
+            <Label htmlFor="activity-name" className="text-foreground">
               Naam van de activiteit
             </Label>
             <Input
@@ -121,7 +121,7 @@ export function ActivityForm({ categories, activities, dailyBudget }: ActivityFo
 
           <div className="grid gap-5 md:grid-cols-2">
             <div className="space-y-2">
-              <Label className="text-slate-800">Categorie</Label>
+              <Label className="text-foreground">Categorie</Label>
               <Select
                 disabled={isPending}
                 value={categoryId}
@@ -146,7 +146,7 @@ export function ActivityForm({ categories, activities, dailyBudget }: ActivityFo
             </div>
 
             <div className="space-y-2">
-              <Label htmlFor="duration-minutes" className="text-slate-800">
+              <Label htmlFor="duration-minutes" className="text-foreground">
                 Geschatte duur in minuten
               </Label>
               <Input
@@ -162,13 +162,18 @@ export function ActivityForm({ categories, activities, dailyBudget }: ActivityFo
                 value={durationMinutes}
                 onChange={(event) => setDurationMinutes(event.target.value)}
               />
-              <div className="flex flex-wrap gap-2">
+              <div
+                className="flex flex-wrap gap-2"
+                role="group"
+                aria-label="Snelle duurkeuzes"
+              >
                 {ACTIVITY_DURATION_SUGGESTIONS.map((value) => (
                   <button
                     key={value}
                     type="button"
                     disabled={isPending}
                     onClick={() => setDurationMinutes(String(value))}
+                    aria-pressed={durationMinutes === String(value)}
                     className={cn(
                       buttonVariants({
                         variant: durationMinutes === String(value) ? "default" : "outline",
@@ -186,24 +191,24 @@ export function ActivityForm({ categories, activities, dailyBudget }: ActivityFo
 
           <Separator />
 
-          <Card className="rounded-[1.5rem] border border-border/60 bg-background/80 py-0 shadow-none">
+          <Card tone="subtle" className="py-0 shadow-none">
             <CardContent className="space-y-2 py-5">
-              <p className="text-sm font-semibold text-slate-900">Vooruitblik op de meter</p>
-              <p className="text-sm leading-7 text-muted-foreground">
+              <p className="text-sm font-semibold text-foreground">Vooruitblik op de meter</p>
+              <p className="text-sm leading-7 text-muted-foreground" aria-live="polite">
                 {previewPoints === null
                   ? "Kies een geldige duur en impact om te zien hoeveel punten deze activiteit ongeveer toevoegt."
                   : `Deze activiteit telt voorlopig voor ${previewPoints} punten. Je totaal zou dan uitkomen op ${previewMeter?.plannedPoints ?? currentMeter.plannedPoints} geplande punten.`}
               </p>
               {dailyBudget !== null && previewMeter ? (
-                <p className="text-sm leading-7 text-slate-700">
+                <p className="text-sm leading-7 text-foreground/80" aria-live="polite">
                   Dat is {previewMeter.dailyBudget} punten budget, met daarna nog{" "}
                   <strong>{previewMeter.remainingBudget} punten ruimte</strong>.
                 </p>
               ) : null}
               {previewMeter?.isOverBudget ? (
-                <Alert className="rounded-[1.25rem] border-amber-300 bg-amber-50 text-amber-950 [&_svg]:text-amber-700">
+                <Alert variant="warning">
                   <AlertTitle className="text-sm">Niet-blokkerende waarschuwing</AlertTitle>
-                  <AlertDescription className="leading-7 text-amber-900">
+                  <AlertDescription className="leading-7 text-current">
                     Met deze activiteit kom je ongeveer{" "}
                     <strong>{Math.abs(previewMeter.remainingBudget ?? 0)} punten</strong> boven je dagbudget uit.
                     Je kunt nog steeds opslaan, maar dit is een goed moment om bewust te heroverwegen of te versimpelen.
@@ -216,14 +221,18 @@ export function ActivityForm({ categories, activities, dailyBudget }: ActivityFo
           <div className="grid gap-5 md:grid-cols-2">
             <div className="space-y-3">
               <div className="space-y-1">
-                <Label className="text-sm font-semibold text-slate-900">
+                <Label id="impact-group-label" className="text-sm font-semibold text-foreground">
                   Verwachte impact
                 </Label>
                 <p className="text-sm leading-7 text-muted-foreground">
                   Kies hoe belastend deze activiteit voor jou aanvoelt.
                 </p>
               </div>
-              <div className="grid gap-3">
+              <div
+                className="grid gap-3"
+                role="group"
+                aria-labelledby="impact-group-label"
+              >
                 {ACTIVITY_IMPACT_OPTIONS.map((option) => {
                   const isSelected = impactLevel === option.value;
 
@@ -233,11 +242,12 @@ export function ActivityForm({ categories, activities, dailyBudget }: ActivityFo
                       type="button"
                       disabled={isPending}
                       onClick={() => setImpactLevel(option.value)}
+                      aria-pressed={isSelected}
                       className={cn(
                         "rounded-[1.25rem] border px-4 py-4 text-left transition",
                         isSelected
-                          ? "border-primary bg-primary text-primary-foreground shadow-[0_12px_30px_rgba(22,58,43,0.18)]"
-                          : "border-border/60 bg-background/80 text-slate-900 hover:border-primary/35",
+                          ? "border-primary bg-primary text-primary-foreground shadow-[var(--shadow-2)]"
+                          : "border-border/60 bg-background/80 text-foreground hover:border-primary/35",
                         isPending && "pointer-events-none opacity-70",
                       )}
                     >
@@ -260,14 +270,18 @@ export function ActivityForm({ categories, activities, dailyBudget }: ActivityFo
 
             <div className="space-y-3">
               <div className="space-y-1">
-                <Label className="text-sm font-semibold text-slate-900">
+                <Label id="priority-group-label" className="text-sm font-semibold text-foreground">
                   Prioriteit voor vandaag
                 </Label>
                 <p className="text-sm leading-7 text-muted-foreground">
                   Dit helpt straks om bewust te herschikken zonder alles te verliezen.
                 </p>
               </div>
-              <div className="grid gap-3">
+              <div
+                className="grid gap-3"
+                role="group"
+                aria-labelledby="priority-group-label"
+              >
                 {ACTIVITY_PRIORITY_OPTIONS.map((option) => {
                   const isSelected = priorityLevel === option.value;
 
@@ -277,11 +291,12 @@ export function ActivityForm({ categories, activities, dailyBudget }: ActivityFo
                       type="button"
                       disabled={isPending}
                       onClick={() => setPriorityLevel(option.value)}
+                      aria-pressed={isSelected}
                       className={cn(
                         "rounded-[1.25rem] border px-4 py-4 text-left transition",
                         isSelected
-                          ? "border-primary bg-primary text-primary-foreground shadow-[0_12px_30px_rgba(22,58,43,0.18)]"
-                          : "border-border/60 bg-background/80 text-slate-900 hover:border-primary/35",
+                          ? "border-primary bg-primary text-primary-foreground shadow-[var(--shadow-2)]"
+                          : "border-border/60 bg-background/80 text-foreground hover:border-primary/35",
                         isPending && "pointer-events-none opacity-70",
                       )}
                     >
@@ -306,7 +321,7 @@ export function ActivityForm({ categories, activities, dailyBudget }: ActivityFo
       </Card>
 
       <div className="flex flex-wrap items-center justify-between gap-3">
-        <p className="text-sm leading-7 text-muted-foreground">
+        <p className="text-sm leading-7 text-muted-foreground" aria-live="polite">
           {isPending
             ? "Je activiteit wordt opgeslagen..."
             : "Je activiteit wordt vandaag toegevoegd met status `gepland`, waarna de meter direct opnieuw wordt berekend."}
diff --git a/components/planning/energy-meter-card.tsx b/components/planning/energy-meter-card.tsx
index 1f68626..91c7962 100644
--- a/components/planning/energy-meter-card.tsx
+++ b/components/planning/energy-meter-card.tsx
@@ -46,18 +46,16 @@ export function EnergyMeterCard({
   meter,
   tone = "default",
 }: EnergyMeterCardProps) {
+  const progressValue =
+    meter.dailyBudget === null ? null : Math.min(100, Math.max(0, meter.progressPercent ?? 0));
+
   return (
-    <Card
-      className={cn(
-        "rounded-[1.75rem] border border-border/60 py-0 shadow-[0_12px_40px_rgba(71,85,105,0.08)]",
-        tone === "default" ? "bg-card/90" : "bg-white/70",
-      )}
-    >
+    <Card tone={tone === "default" ? "default" : "subtle"} className="py-0">
       <CardHeader className="pb-0">
         <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
           EnergyMeter
         </p>
-        <CardTitle className="text-lg text-slate-900">
+        <CardTitle className="text-lg text-foreground">
           {meter.dailyBudget === null
             ? `${meter.plannedPoints} geplande punten`
             : `${meter.plannedPoints} van ${meter.dailyBudget} punten gepland`}
@@ -69,17 +67,32 @@ export function EnergyMeterCard({
         </CardDescription>
 
         <div className="space-y-2">
-          <div className="h-3 overflow-hidden rounded-full bg-secondary">
+          <div
+            className="h-3 overflow-hidden rounded-full bg-secondary"
+            role={progressValue === null ? undefined : "progressbar"}
+            aria-label="Voortgang van je dagbudget"
+            aria-valuemin={progressValue === null ? undefined : 0}
+            aria-valuemax={progressValue === null ? undefined : 100}
+            aria-valuenow={progressValue === null ? undefined : progressValue}
+            aria-valuetext={
+              meter.dailyBudget === null
+                ? "Nog geen dagbudget beschikbaar"
+                : `${meter.plannedPoints} van ${meter.dailyBudget} punten gepland`
+            }
+          >
             <div
               className={cn(
                 "h-full rounded-full transition-[width]",
-                meter.isOverBudget ? "bg-amber-500" : "bg-primary",
+                meter.isOverBudget ? "bg-warning" : "bg-primary",
               )}
               style={{ width: `${meter.progressPercent ?? 0}%` }}
             />
           </div>
 
-          <div className="flex flex-wrap items-center justify-between gap-3 text-sm leading-7 text-slate-700">
+          <div
+            className="flex flex-wrap items-center justify-between gap-3 text-sm leading-7 text-muted-foreground"
+            aria-live="polite"
+          >
             <p>
               <strong>Activiteiten:</strong> {meter.activityCount}
             </p>
@@ -92,9 +105,9 @@ export function EnergyMeterCard({
         </div>
 
         {meter.dailyBudget !== null && meter.isOverBudget ? (
-          <Alert className="rounded-[1.25rem] border-amber-300 bg-amber-50 text-amber-950 [&_svg]:text-amber-700">
+          <Alert variant="warning">
             <AlertTitle className="text-sm">Je zit boven je dagbudget</AlertTitle>
-            <AlertDescription className="leading-7 text-amber-900">
+            <AlertDescription className="leading-7 text-current">
               Je planning komt nu <strong>{Math.abs(meter.remainingBudget ?? 0)} punten</strong> boven het dagbudget uit.
               Je kunt nog steeds doorgaan, maar dit is een goed moment om iets te schrappen, te verkorten of later te doen.
             </AlertDescription>
diff --git a/components/planning/today-activities-list.tsx b/components/planning/today-activities-list.tsx
index 367e5f5..8432c50 100644
--- a/components/planning/today-activities-list.tsx
+++ b/components/planning/today-activities-list.tsx
@@ -46,12 +46,12 @@ export function TodayActivitiesList({
   categories,
 }: TodayActivitiesListProps) {
   return (
-    <Card className="rounded-[1.75rem] border border-border/60 bg-card/90 py-0 shadow-[0_12px_40px_rgba(71,85,105,0.08)]">
+    <Card className="py-0">
       <CardHeader className="pb-0">
         <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
           Vandaag gepland
         </p>
-        <CardTitle className="text-lg text-slate-900">
+        <CardTitle className="text-lg text-foreground">
           {activities.length === 0
             ? "Nog geen activiteiten gepland"
             : `${activities.length} ${activities.length === 1 ? "activiteit" : "activiteiten"}`}
@@ -66,11 +66,11 @@ export function TodayActivitiesList({
           activities.map((activity) => (
             <div
               key={activity.id}
-              className="rounded-[1.25rem] border border-border/60 bg-background/80 px-4 py-4"
+              className="rounded-[var(--radius-xl)] border border-border/60 bg-background/80 px-4 py-4"
             >
               <div className="flex flex-wrap items-start justify-between gap-3">
                 <div>
-                  <p className="text-sm font-semibold text-slate-900">{activity.name}</p>
+                  <p className="text-sm font-semibold text-foreground">{activity.name}</p>
                   <p className="mt-1 text-sm leading-7 text-muted-foreground">
                     {getCategoryLabel(categories, activity.categoryId)}
                   </p>
@@ -80,7 +80,7 @@ export function TodayActivitiesList({
                 </span>
               </div>
 
-              <div className="mt-4 grid gap-3 text-sm leading-7 text-slate-700 sm:grid-cols-3">
+              <div className="mt-4 grid gap-3 text-sm leading-7 text-foreground/80 sm:grid-cols-3">
                 <p>
                   <strong>Duur:</strong> {activity.durationMinutes} min
                 </p>
diff --git a/components/settings/settings-form.tsx b/components/settings/settings-form.tsx
index ac099b9..2f33b5a 100644
--- a/components/settings/settings-form.tsx
+++ b/components/settings/settings-form.tsx
@@ -48,12 +48,12 @@ export function SettingsForm({ profileBundle }: SettingsFormProps) {
       <input type="hidden" name="locale" value={locale} />
       <PreferenceHiddenFields draft={draft} />
 
-      <Card className="rounded-[1.75rem] border border-border/60 bg-card/90 py-0 shadow-[0_18px_60px_rgba(71,85,105,0.1)]">
+      <Card elevation="raised" className="py-0">
         <CardHeader className="pb-0">
           <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
             Account
           </p>
-          <CardTitle className="font-[family-name:var(--font-display)] text-3xl text-slate-900">
+          <CardTitle className="font-[family-name:var(--font-display)] text-3xl text-foreground">
             Basisinstellingen voor jouw account
           </CardTitle>
           <CardDescription className="max-w-2xl text-sm leading-7 text-muted-foreground">
@@ -62,7 +62,7 @@ export function SettingsForm({ profileBundle }: SettingsFormProps) {
           </CardDescription>
         </CardHeader>
         <CardContent className="pt-1 pb-6">
-          <Alert className="rounded-[1.5rem] border-sky-200 bg-sky-50 text-sky-950 [&_svg]:text-sky-700">
+          <Alert variant="info">
             <AlertDescription className="leading-7 text-current">
               Release 1 draait bewust volledig in het <strong>Nederlands</strong>.
               De taalinstelling blijft wel al aanwezig in het accountmodel.
@@ -72,7 +72,7 @@ export function SettingsForm({ profileBundle }: SettingsFormProps) {
       </Card>
 
       <section className="grid gap-5 lg:grid-cols-2">
-        <Card className="rounded-[1.75rem] border border-border/60 bg-card/90 py-0 shadow-[0_12px_40px_rgba(71,85,105,0.08)]">
+        <Card className="py-0">
           <CardHeader className="pb-0">
             <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
               Taal en tijd
@@ -80,7 +80,7 @@ export function SettingsForm({ profileBundle }: SettingsFormProps) {
           </CardHeader>
           <CardContent className="space-y-5 pb-6">
             <div className="space-y-2">
-              <Label className="text-slate-800">Taal</Label>
+              <Label className="text-foreground">Taal</Label>
               <Select
                 disabled={isPending}
                 value={locale}
@@ -100,7 +100,7 @@ export function SettingsForm({ profileBundle }: SettingsFormProps) {
             </div>
 
             <div className="space-y-2">
-              <Label className="text-slate-800">Timezone</Label>
+              <Label className="text-foreground">Timezone</Label>
               <Select
                 disabled={isPending}
                 value={draft.timezone}
@@ -125,17 +125,17 @@ export function SettingsForm({ profileBundle }: SettingsFormProps) {
           </CardContent>
         </Card>
 
-        <Card className="rounded-[1.75rem] border border-border/60 bg-card/90 py-0 shadow-[0_12px_40px_rgba(71,85,105,0.08)]">
+        <Card className="py-0">
           <CardHeader className="pb-0">
             <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
               Interface
             </p>
           </CardHeader>
           <CardContent className="space-y-4 pb-6">
-            <Card className="rounded-[1.5rem] border border-border/60 bg-background/80 py-0 shadow-none">
+            <Card tone="subtle" className="py-0 shadow-none">
               <CardContent className="flex items-start justify-between gap-4 py-5">
                 <div className="space-y-1">
-                  <Label htmlFor="show-energy-points" className="text-sm font-semibold text-slate-900">
+                  <Label htmlFor="show-energy-points" className="text-sm font-semibold text-foreground">
                     Toon energiebudgetpunten
                   </Label>
                   <p className="text-sm leading-7 text-muted-foreground">
@@ -157,18 +157,18 @@ export function SettingsForm({ profileBundle }: SettingsFormProps) {
       </section>
 
       <section className="grid gap-5 lg:grid-cols-2">
-        <Card className="rounded-[1.75rem] border border-border/60 bg-card/90 py-0 shadow-[0_12px_40px_rgba(71,85,105,0.08)]">
+        <Card className="py-0">
           <CardHeader className="pb-0">
             <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted-foreground">
               Reminders
             </p>
           </CardHeader>
           <CardContent className="space-y-4 pb-6">
-            <Card className="rounded-[1.5rem] border border-border/60 bg-background/80 py-0 shadow-none">
+            <Card tone="subtle" className="py-0 shadow-none">
               <CardContent className="space-y-4 py-5">
                 <div className="flex items-start justify-between gap-4">
                   <div className="space-y-1">
-                    <Label htmlFor="morning-reminder-enabled" className="text-sm font-semibold text-slate-900">
+                    <Label htmlFor="morning-reminder-enabled" className="text-sm font-semibold text-foreground">
                       Ochtendreminder
                     </Label>
                     <p className="text-sm leading-7 text-muted-foreground">
@@ -189,12 +189,12 @@ export function SettingsForm({ profileBundle }: SettingsFormProps) {
                   <>
                     <Separator />
                     <div className="space-y-2">
-                      <Label htmlFor="morning-reminder-time" className="text-slate-800">
+                      <Label htmlFor="morning-reminder-time" className="text-foreground">
                         Tijdstip voor de ochtendreminder
                       </Label>
                       <Input
                         id="morning-reminder-time"
-                        className="h-12 rounded-[1.25rem] bg-white px-4 text-base md:text-base"
+                        className="h-12 rounded-[1.25rem] bg-background/80 px-4 text-base md:text-base"
                         disabled={isPending}
                         type="time"
                         value={draft.morningReminderTime}
@@ -208,10 +208,10 @@ export function SettingsForm({ profileBundle }: SettingsFormProps) {
               </CardContent>
             </Card>
 
-            <Card className="rounded-[1.5rem] border border-border/60 bg-background/80 py-0 shadow-none">
+            <Card tone="subtle" className="py-0 shadow-none">
               <CardContent className="flex items-start justify-between gap-4 py-5">
                 <div className="space-y-1">
-                  <Label htmlFor="reflection-reminder-enabled" className="text-sm font-semibold text-slate-900">
+                  <Label htmlFor="reflection-reminder-enabled" className="text-sm font-semibold text-foreground">
                     Reflectieprompts toestaan
                   </Label>
                   <p className="text-sm leading-7 text-muted-foreground">
@@ -231,7 +231,7 @@ export function SettingsForm({ profileBundle }: SettingsFormProps) {
           </CardContent>
         </Card>
 
-        <Card className="rounded-[1.75rem] border border-primary/15 bg-primary py-0 text-primary-foreground shadow-[0_12px_40px_rgba(22,58,43,0.18)]">
+        <Card tone="primary" elevation="raised" className="py-0">
           <CardHeader className="pb-0">
             <p className="text-xs font-semibold uppercase tracking-[0.24em] text-primary-foreground/75">
               Bewuste grenzen
diff --git a/components/theme-provider.tsx b/components/theme-provider.tsx
new file mode 100644
index 0000000..2e0ad9b
--- /dev/null
+++ b/components/theme-provider.tsx
@@ -0,0 +1,10 @@
+"use client";
+
+import * as React from "react";
+import { ThemeProvider as NextThemesProvider } from "next-themes";
+
+type ThemeProviderProps = React.ComponentProps<typeof NextThemesProvider>;
+
+export function ThemeProvider({ children, ...props }: ThemeProviderProps) {
+  return <NextThemesProvider {...props}>{children}</NextThemesProvider>;
+}
diff --git a/components/ui/alert.tsx b/components/ui/alert.tsx
index 1fe3176..2dd102b 100644
--- a/components/ui/alert.tsx
+++ b/components/ui/alert.tsx
@@ -4,13 +4,16 @@ import { cva, type VariantProps } from "class-variance-authority"
 import { cn } from "@/lib/utils"
 
 const alertVariants = cva(
-  "group/alert relative grid w-full gap-0.5 rounded-lg border px-2.5 py-2 text-left text-sm has-data-[slot=alert-action]:relative has-data-[slot=alert-action]:pr-18 has-[>svg]:grid-cols-[auto_1fr] has-[>svg]:gap-x-2 *:[svg]:row-span-2 *:[svg]:translate-y-0.5 *:[svg]:text-current *:[svg:not([class*='size-'])]:size-4",
+  "group/alert relative grid w-full gap-0.5 rounded-[var(--radius-xl)] border px-3 py-3 text-left text-sm shadow-[var(--shadow-1)] has-data-[slot=alert-action]:relative has-data-[slot=alert-action]:pr-18 has-[>svg]:grid-cols-[auto_1fr] has-[>svg]:gap-x-2 *:[svg]:row-span-2 *:[svg]:translate-y-0.5 *:[svg]:text-current *:[svg:not([class*='size-'])]:size-[1.125rem]",
   {
     variants: {
       variant: {
-        default: "bg-card text-card-foreground",
+        default: "border-border/70 bg-card/92 text-card-foreground",
+        info: "border-primary/15 bg-secondary text-foreground",
+        success: "border-success/30 bg-success/14 text-foreground",
+        warning: "border-warning/32 bg-warning/16 text-foreground",
         destructive:
-          "bg-card text-destructive *:data-[slot=alert-description]:text-destructive/90 *:[svg]:text-current",
+          "border-destructive/32 bg-destructive/12 text-foreground *:data-[slot=alert-description]:text-destructive/90 *:[svg]:text-destructive",
       },
     },
     defaultVariants: {
@@ -39,7 +42,7 @@ function AlertTitle({ className, ...props }: React.ComponentProps<"div">) {
     <div
       data-slot="alert-title"
       className={cn(
-        "font-medium group-has-[>svg]/alert:col-start-2 [&_a]:underline [&_a]:underline-offset-3 [&_a]:hover:text-foreground",
+        "font-medium leading-6 group-has-[>svg]/alert:col-start-2 [&_a]:underline [&_a]:underline-offset-3 [&_a]:hover:text-foreground",
         className
       )}
       {...props}
@@ -55,7 +58,7 @@ function AlertDescription({
     <div
       data-slot="alert-description"
       className={cn(
-        "text-sm text-balance text-muted-foreground md:text-pretty [&_a]:underline [&_a]:underline-offset-3 [&_a]:hover:text-foreground [&_p:not(:last-child)]:mb-4",
+        "text-sm text-balance leading-7 text-muted-foreground md:text-pretty [&_a]:underline [&_a]:underline-offset-3 [&_a]:hover:text-foreground [&_p:not(:last-child)]:mb-4",
         className
       )}
       {...props}
diff --git a/components/ui/button.tsx b/components/ui/button.tsx
index 09df753..14ff1ff 100644
--- a/components/ui/button.tsx
+++ b/components/ui/button.tsx
@@ -4,32 +4,37 @@ import { cva, type VariantProps } from "class-variance-authority"
 import { cn } from "@/lib/utils"
 
 const buttonVariants = cva(
-  "group/button inline-flex shrink-0 items-center justify-center rounded-lg border border-transparent bg-clip-padding text-sm font-medium whitespace-nowrap transition-all outline-none select-none focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50 active:not-aria-[haspopup]:translate-y-px disabled:pointer-events-none disabled:opacity-50 aria-invalid:border-destructive aria-invalid:ring-3 aria-invalid:ring-destructive/20 dark:aria-invalid:border-destructive/50 dark:aria-invalid:ring-destructive/40 [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4",
+  "group/button inline-flex shrink-0 items-center justify-center rounded-[var(--radius-full,9999px)] border border-transparent bg-clip-padding text-sm font-medium whitespace-nowrap transition-all duration-150 ease-[cubic-bezier(.2,.7,.2,1)] outline-none select-none focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50 active:not-aria-[haspopup]:translate-y-px disabled:pointer-events-none disabled:opacity-50 aria-invalid:border-destructive aria-invalid:ring-3 aria-invalid:ring-destructive/20 dark:aria-invalid:border-destructive/50 dark:aria-invalid:ring-destructive/40 [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-[1.125rem]",
   {
     variants: {
       variant: {
-        default: "bg-primary text-primary-foreground [a]:hover:bg-primary/80",
+        default:
+          "bg-primary text-primary-foreground shadow-[var(--shadow-1)] hover:bg-primary/90 hover:shadow-[var(--shadow-2)] [a]:hover:bg-primary/90",
         outline:
-          "border-border bg-background hover:bg-muted hover:text-foreground aria-expanded:bg-muted aria-expanded:text-foreground dark:border-input dark:bg-input/30 dark:hover:bg-input/50",
+          "border-border bg-background/88 hover:bg-muted hover:text-foreground hover:shadow-[var(--shadow-1)] aria-expanded:bg-muted aria-expanded:text-foreground dark:border-input dark:bg-input/30 dark:hover:bg-input/50",
         secondary:
-          "bg-secondary text-secondary-foreground hover:bg-secondary/80 aria-expanded:bg-secondary aria-expanded:text-secondary-foreground",
+          "bg-secondary text-secondary-foreground shadow-[var(--shadow-1)] hover:bg-secondary/85 hover:shadow-[var(--shadow-2)] aria-expanded:bg-secondary aria-expanded:text-secondary-foreground",
+        success:
+          "bg-success text-primary-foreground shadow-[var(--shadow-1)] hover:brightness-[0.98] hover:shadow-[var(--shadow-2)]",
+        warning:
+          "bg-warning text-foreground shadow-[var(--shadow-1)] hover:brightness-[0.98] hover:shadow-[var(--shadow-2)]",
         ghost:
           "hover:bg-muted hover:text-foreground aria-expanded:bg-muted aria-expanded:text-foreground dark:hover:bg-muted/50",
         destructive:
-          "bg-destructive/10 text-destructive hover:bg-destructive/20 focus-visible:border-destructive/40 focus-visible:ring-destructive/20 dark:bg-destructive/20 dark:hover:bg-destructive/30 dark:focus-visible:ring-destructive/40",
+          "bg-destructive text-primary-foreground shadow-[var(--shadow-1)] hover:brightness-[0.98] hover:shadow-[var(--shadow-2)] focus-visible:border-destructive/40 focus-visible:ring-destructive/20 dark:focus-visible:ring-destructive/40",
         link: "text-primary underline-offset-4 hover:underline",
       },
       size: {
         default:
           "h-8 gap-1.5 px-2.5 has-data-[icon=inline-end]:pr-2 has-data-[icon=inline-start]:pl-2",
-        xs: "h-6 gap-1 rounded-[min(var(--radius-md),10px)] px-2 text-xs in-data-[slot=button-group]:rounded-lg has-data-[icon=inline-end]:pr-1.5 has-data-[icon=inline-start]:pl-1.5 [&_svg:not([class*='size-'])]:size-3",
-        sm: "h-7 gap-1 rounded-[min(var(--radius-md),12px)] px-2.5 text-[0.8rem] in-data-[slot=button-group]:rounded-lg has-data-[icon=inline-end]:pr-1.5 has-data-[icon=inline-start]:pl-1.5 [&_svg:not([class*='size-'])]:size-3.5",
+        xs: "h-6 gap-1 rounded-[var(--radius-sm)] px-2 text-xs in-data-[slot=button-group]:rounded-[var(--radius-sm)] has-data-[icon=inline-end]:pr-1.5 has-data-[icon=inline-start]:pl-1.5 [&_svg:not([class*='size-'])]:size-3",
+        sm: "h-7 gap-1 rounded-[var(--radius)] px-2.5 text-[0.8rem] in-data-[slot=button-group]:rounded-[var(--radius)] has-data-[icon=inline-end]:pr-1.5 has-data-[icon=inline-start]:pl-1.5 [&_svg:not([class*='size-'])]:size-3.5",
         lg: "h-9 gap-1.5 px-2.5 has-data-[icon=inline-end]:pr-2 has-data-[icon=inline-start]:pl-2",
         icon: "size-8",
         "icon-xs":
-          "size-6 rounded-[min(var(--radius-md),10px)] in-data-[slot=button-group]:rounded-lg [&_svg:not([class*='size-'])]:size-3",
+          "size-6 rounded-[var(--radius-sm)] in-data-[slot=button-group]:rounded-[var(--radius-sm)] [&_svg:not([class*='size-'])]:size-3",
         "icon-sm":
-          "size-7 rounded-[min(var(--radius-md),12px)] in-data-[slot=button-group]:rounded-lg",
+          "size-7 rounded-[var(--radius)] in-data-[slot=button-group]:rounded-[var(--radius)]",
         "icon-lg": "size-9",
       },
     },
diff --git a/components/ui/card.tsx b/components/ui/card.tsx
index 40cac5f..f3111ae 100644
--- a/components/ui/card.tsx
+++ b/components/ui/card.tsx
@@ -1,18 +1,44 @@
 import * as React from "react"
+import { cva, type VariantProps } from "class-variance-authority"
 
 import { cn } from "@/lib/utils"
 
+const cardVariants = cva(
+  "group/card flex flex-col gap-4 overflow-hidden rounded-[var(--radius-xl)] py-4 text-sm text-card-foreground ring-1 ring-border/75 has-data-[slot=card-footer]:pb-0 has-[>img:first-child]:pt-0 data-[size=sm]:gap-3 data-[size=sm]:py-3 data-[size=sm]:has-data-[slot=card-footer]:pb-0 *:[img:first-child]:rounded-t-[var(--radius-xl)] *:[img:last-child]:rounded-b-[var(--radius-xl)]",
+  {
+    variants: {
+      tone: {
+        default: "bg-card/92",
+        subtle: "bg-background/78",
+        primary: "bg-primary text-primary-foreground ring-primary/10",
+      },
+      elevation: {
+        flat: "shadow-[var(--shadow-1)]",
+        raised: "shadow-[var(--shadow-2)]",
+      },
+    },
+    defaultVariants: {
+      tone: "default",
+      elevation: "flat",
+    },
+  }
+)
+
 function Card({
   className,
   size = "default",
+  tone,
+  elevation,
   ...props
-}: React.ComponentProps<"div"> & { size?: "default" | "sm" }) {
+}: React.ComponentProps<"div"> &
+  { size?: "default" | "sm" } &
+  VariantProps<typeof cardVariants>) {
   return (
     <div
       data-slot="card"
       data-size={size}
       className={cn(
-        "group/card flex flex-col gap-4 overflow-hidden rounded-xl bg-card py-4 text-sm text-card-foreground ring-1 ring-foreground/10 has-data-[slot=card-footer]:pb-0 has-[>img:first-child]:pt-0 data-[size=sm]:gap-3 data-[size=sm]:py-3 data-[size=sm]:has-data-[slot=card-footer]:pb-0 *:[img:first-child]:rounded-t-xl *:[img:last-child]:rounded-b-xl",
+        cardVariants({ tone, elevation }),
         className
       )}
       {...props}
@@ -25,7 +51,7 @@ function CardHeader({ className, ...props }: React.ComponentProps<"div">) {
     <div
       data-slot="card-header"
       className={cn(
-        "group/card-header @container/card-header grid auto-rows-min items-start gap-1 rounded-t-xl px-4 group-data-[size=sm]/card:px-3 has-data-[slot=card-action]:grid-cols-[1fr_auto] has-data-[slot=card-description]:grid-rows-[auto_auto] [.border-b]:pb-4 group-data-[size=sm]/card:[.border-b]:pb-3",
+        "group/card-header @container/card-header grid auto-rows-min items-start gap-1 rounded-t-[var(--radius-xl)] px-4 group-data-[size=sm]/card:px-3 has-data-[slot=card-action]:grid-cols-[1fr_auto] has-data-[slot=card-description]:grid-rows-[auto_auto] [.border-b]:pb-4 group-data-[size=sm]/card:[.border-b]:pb-3",
         className
       )}
       {...props}
@@ -38,7 +64,7 @@ function CardTitle({ className, ...props }: React.ComponentProps<"div">) {
     <div
       data-slot="card-title"
       className={cn(
-        "font-heading text-base leading-snug font-medium group-data-[size=sm]/card:text-sm",
+        "font-heading text-base leading-snug font-semibold tracking-[-0.02em] group-data-[size=sm]/card:text-sm",
         className
       )}
       {...props}
@@ -84,7 +110,7 @@ function CardFooter({ className, ...props }: React.ComponentProps<"div">) {
     <div
       data-slot="card-footer"
       className={cn(
-        "flex items-center rounded-b-xl border-t bg-muted/50 p-4 group-data-[size=sm]/card:p-3",
+        "flex items-center rounded-b-[var(--radius-xl)] border-t border-border/65 bg-muted/60 p-4 group-data-[size=sm]/card:p-3",
         className
       )}
       {...props}
@@ -100,4 +126,5 @@ export {
   CardAction,
   CardDescription,
   CardContent,
+  cardVariants,
 }
diff --git a/components/ui/checkbox.tsx b/components/ui/checkbox.tsx
index 4fcd847..39ffe92 100644
--- a/components/ui/checkbox.tsx
+++ b/components/ui/checkbox.tsx
@@ -10,7 +10,7 @@ function Checkbox({ className, ...props }: CheckboxPrimitive.Root.Props) {
     <CheckboxPrimitive.Root
       data-slot="checkbox"
       className={cn(
-        "peer relative flex size-4 shrink-0 items-center justify-center rounded-[4px] border border-input transition-colors outline-none group-has-disabled/field:opacity-50 after:absolute after:-inset-x-3 after:-inset-y-2 focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50 disabled:cursor-not-allowed disabled:opacity-50 aria-invalid:border-destructive aria-invalid:ring-3 aria-invalid:ring-destructive/20 aria-invalid:aria-checked:border-primary dark:bg-input/30 dark:aria-invalid:border-destructive/50 dark:aria-invalid:ring-destructive/40 data-checked:border-primary data-checked:bg-primary data-checked:text-primary-foreground dark:data-checked:bg-primary",
+        "peer relative flex size-4 shrink-0 items-center justify-center rounded-[4px] border border-input transition-colors outline-none group-has-disabled/field:opacity-50 after:absolute after:-inset-x-3 after:-inset-y-2 focus-visible:border-ring focus-visible:ring-4 focus-visible:ring-ring/30 focus-visible:ring-offset-2 focus-visible:ring-offset-background disabled:cursor-not-allowed disabled:opacity-50 aria-invalid:border-destructive aria-invalid:ring-4 aria-invalid:ring-destructive/16 aria-invalid:aria-checked:border-primary dark:bg-input/30 dark:aria-invalid:border-destructive/50 dark:aria-invalid:ring-destructive/24 data-checked:border-primary data-checked:bg-primary data-checked:text-primary-foreground dark:data-checked:bg-primary",
         className
       )}
       {...props}
diff --git a/components/ui/input.tsx b/components/ui/input.tsx
index 7d21bab..a16a914 100644
--- a/components/ui/input.tsx
+++ b/components/ui/input.tsx
@@ -9,7 +9,7 @@ function Input({ className, type, ...props }: React.ComponentProps<"input">) {
       type={type}
       data-slot="input"
       className={cn(
-        "h-8 w-full min-w-0 rounded-lg border border-input bg-transparent px-2.5 py-1 text-base transition-colors outline-none file:inline-flex file:h-6 file:border-0 file:bg-transparent file:text-sm file:font-medium file:text-foreground placeholder:text-muted-foreground focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50 disabled:pointer-events-none disabled:cursor-not-allowed disabled:bg-input/50 disabled:opacity-50 aria-invalid:border-destructive aria-invalid:ring-3 aria-invalid:ring-destructive/20 md:text-sm dark:bg-input/30 dark:disabled:bg-input/80 dark:aria-invalid:border-destructive/50 dark:aria-invalid:ring-destructive/40",
+        "h-8 w-full min-w-0 rounded-[var(--radius)] border border-input bg-transparent px-2.5 py-1 text-base transition-colors outline-none file:inline-flex file:h-6 file:border-0 file:bg-transparent file:text-sm file:font-medium file:text-foreground placeholder:text-muted-foreground hover:border-border/80 focus-visible:border-ring focus-visible:ring-4 focus-visible:ring-ring/30 focus-visible:ring-offset-2 focus-visible:ring-offset-background disabled:pointer-events-none disabled:cursor-not-allowed disabled:bg-input/50 disabled:opacity-50 aria-invalid:border-destructive aria-invalid:ring-4 aria-invalid:ring-destructive/16 md:text-sm dark:bg-input/30 dark:hover:bg-input/45 dark:disabled:bg-input/80 dark:aria-invalid:border-destructive/50 dark:aria-invalid:ring-destructive/24",
         className
       )}
       {...props}
diff --git a/components/ui/select.tsx b/components/ui/select.tsx
index e8021f5..b2def87 100644
--- a/components/ui/select.tsx
+++ b/components/ui/select.tsx
@@ -41,7 +41,7 @@ function SelectTrigger({
       data-slot="select-trigger"
       data-size={size}
       className={cn(
-        "flex w-fit items-center justify-between gap-1.5 rounded-lg border border-input bg-transparent py-2 pr-2 pl-2.5 text-sm whitespace-nowrap transition-colors outline-none select-none focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50 disabled:cursor-not-allowed disabled:opacity-50 aria-invalid:border-destructive aria-invalid:ring-3 aria-invalid:ring-destructive/20 data-placeholder:text-muted-foreground data-[size=default]:h-8 data-[size=sm]:h-7 data-[size=sm]:rounded-[min(var(--radius-md),10px)] *:data-[slot=select-value]:line-clamp-1 *:data-[slot=select-value]:flex *:data-[slot=select-value]:items-center *:data-[slot=select-value]:gap-1.5 dark:bg-input/30 dark:hover:bg-input/50 dark:aria-invalid:border-destructive/50 dark:aria-invalid:ring-destructive/40 [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4",
+        "flex w-fit items-center justify-between gap-1.5 rounded-[var(--radius)] border border-input bg-transparent py-2 pr-2 pl-2.5 text-sm whitespace-nowrap transition-colors outline-none select-none hover:border-border/80 focus-visible:border-ring focus-visible:ring-4 focus-visible:ring-ring/30 focus-visible:ring-offset-2 focus-visible:ring-offset-background disabled:cursor-not-allowed disabled:opacity-50 aria-invalid:border-destructive aria-invalid:ring-4 aria-invalid:ring-destructive/16 data-placeholder:text-muted-foreground data-[size=default]:h-8 data-[size=sm]:h-7 data-[size=sm]:rounded-[var(--radius-sm)] *:data-[slot=select-value]:line-clamp-1 *:data-[slot=select-value]:flex *:data-[slot=select-value]:items-center *:data-[slot=select-value]:gap-1.5 dark:bg-input/30 dark:hover:bg-input/50 dark:aria-invalid:border-destructive/50 dark:aria-invalid:ring-destructive/24 [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4",
         className
       )}
       {...props}
@@ -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-popover text-popover-foreground shadow-md ring-1 ring-foreground/10 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-[var(--radius-lg)] bg-popover text-popover-foreground shadow-[var(--shadow-2)] ring-1 ring-border/80 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 />
diff --git a/components/ui/sonner.tsx b/components/ui/sonner.tsx
index 0f01208..f0ebcd7 100644
--- a/components/ui/sonner.tsx
+++ b/components/ui/sonner.tsx
@@ -7,12 +7,15 @@ import {
   OctagonXIcon,
   TriangleAlertIcon,
 } from "lucide-react";
+import { useTheme } from "next-themes";
 import { Toaster as Sonner, type ToasterProps } from "sonner";
 
 const Toaster = ({ ...props }: ToasterProps) => {
+  const { resolvedTheme } = useTheme();
+
   return (
     <Sonner
-      theme="light"
+      theme={resolvedTheme === "dark" ? "dark" : "light"}
       className="toaster group"
       icons={{
         success: <CircleCheckIcon className="size-4" />,
@@ -26,6 +29,12 @@ const Toaster = ({ ...props }: ToasterProps) => {
           "--normal-bg": "var(--popover)",
           "--normal-text": "var(--popover-foreground)",
           "--normal-border": "var(--border)",
+          "--success-bg": "var(--success)",
+          "--success-text": "var(--primary-foreground)",
+          "--warning-bg": "var(--warning)",
+          "--warning-text": "var(--foreground)",
+          "--error-bg": "var(--destructive)",
+          "--error-text": "var(--primary-foreground)",
           "--border-radius": "var(--radius)",
         } as React.CSSProperties
       }
diff --git a/components/ui/switch.tsx b/components/ui/switch.tsx
index 9b8b44b..b79bae5 100644
--- a/components/ui/switch.tsx
+++ b/components/ui/switch.tsx
@@ -16,7 +16,7 @@ function Switch({
       data-slot="switch"
       data-size={size}
       className={cn(
-        "peer group/switch relative inline-flex shrink-0 items-center rounded-full border border-transparent transition-all outline-none after:absolute after:-inset-x-3 after:-inset-y-2 focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50 aria-invalid:border-destructive aria-invalid:ring-3 aria-invalid:ring-destructive/20 data-[size=default]:h-[18.4px] data-[size=default]:w-[32px] data-[size=sm]:h-[14px] data-[size=sm]:w-[24px] dark:aria-invalid:border-destructive/50 dark:aria-invalid:ring-destructive/40 data-checked:bg-primary data-unchecked:bg-input dark:data-unchecked:bg-input/80 data-disabled:cursor-not-allowed data-disabled:opacity-50",
+        "peer group/switch relative inline-flex shrink-0 items-center rounded-full border border-transparent transition-all outline-none after:absolute after:-inset-x-3 after:-inset-y-2 focus-visible:border-ring focus-visible:ring-4 focus-visible:ring-ring/30 focus-visible:ring-offset-2 focus-visible:ring-offset-background aria-invalid:border-destructive aria-invalid:ring-4 aria-invalid:ring-destructive/16 data-[size=default]:h-[18.4px] data-[size=default]:w-[32px] data-[size=sm]:h-[14px] data-[size=sm]:w-[24px] dark:aria-invalid:border-destructive/50 dark:aria-invalid:ring-destructive/24 data-checked:bg-primary data-unchecked:bg-input dark:data-unchecked:bg-input/80 data-disabled:cursor-not-allowed data-disabled:opacity-50",
         className
       )}
       {...props}
diff --git a/components/wizard/test-wizard-flow.tsx b/components/wizard/test-wizard-flow.tsx
index 5a5ad39..5ce65bb 100644
--- a/components/wizard/test-wizard-flow.tsx
+++ b/components/wizard/test-wizard-flow.tsx
@@ -69,7 +69,7 @@ export function TestWizardFlow() {
   }
 
   const aside = (
-    <Alert className="rounded-[1.5rem] border-white/10 bg-white/8 text-primary-foreground [&_svg]:text-primary-foreground/80">
+    <Alert className="rounded-[var(--radius-2xl)] border-white/10 bg-white/8 text-primary-foreground [&_svg]:text-primary-foreground/80">
       <AlertDescription className="leading-7 text-current">
         <span className="block font-semibold">Interne testwizard</span>
         <span className="mt-2 block">
@@ -129,7 +129,7 @@ export function TestWizardFlow() {
       backAction={backAction}
       nextAction={nextAction}
     >
-      <Card className="rounded-[1.5rem] border border-border/60 bg-background/80 py-0 shadow-none">
+      <Card tone="subtle" className="py-0 shadow-none">
         <CardHeader className="pb-0">
           <CardTitle className="font-[family-name:var(--font-display)] text-2xl">
             {wizard.currentStep.title}
diff --git a/components/wizard/wizard-progress.tsx b/components/wizard/wizard-progress.tsx
index 6536376..59b5bc9 100644
--- a/components/wizard/wizard-progress.tsx
+++ b/components/wizard/wizard-progress.tsx
@@ -11,11 +11,15 @@ export function WizardProgress({ current, total }: WizardProgressProps) {
       {Array.from({ length: total }, (_, index) => (
         <li
           key={index}
+          aria-current={index + 1 === current ? "step" : undefined}
+          aria-label={`Stap ${index + 1} van ${total}`}
           className={cn(
             "h-2 flex-1 rounded-full transition-colors",
             index < current ? "bg-primary-foreground/85" : "bg-white/15",
           )}
-        />
+        >
+          <span className="sr-only">Stap {index + 1} van {total}</span>
+        </li>
       ))}
     </ol>
   );
diff --git a/components/wizard/wizard-shell.tsx b/components/wizard/wizard-shell.tsx
index 18ac220..07cfd6f 100644
--- a/components/wizard/wizard-shell.tsx
+++ b/components/wizard/wizard-shell.tsx
@@ -28,7 +28,7 @@ export function WizardShell({
 }: WizardShellProps) {
   return (
     <div className="grid gap-6 lg:grid-cols-[0.9fr_1.1fr]">
-      <section className="rounded-[2rem] border border-primary/15 bg-primary p-7 text-primary-foreground shadow-[0_18px_60px_rgba(22,58,43,0.18)] sm:p-9">
+      <section className="app-panel-primary rounded-[var(--radius-4xl)] p-7 sm:p-9">
         {eyebrow ? (
           <p className="text-xs font-semibold uppercase tracking-[0.24em] text-primary-foreground/70">
             {eyebrow}
@@ -46,7 +46,7 @@ export function WizardShell({
         <WizardProgress current={progressCurrent} total={progressTotal} />
       </section>
 
-      <section className="rounded-[2rem] border border-border/60 bg-card/90 p-6 shadow-[0_18px_60px_rgba(71,85,105,0.12)] backdrop-blur sm:p-8">
+      <section className="rounded-[var(--radius-4xl)] border border-border/70 bg-card/86 p-6 shadow-[var(--shadow-2)] backdrop-blur sm:p-8">
         {topAction ? (
           <div className="mb-6 flex items-center justify-between gap-3">{topAction}</div>
         ) : null}
diff --git a/docs/README.md b/docs/README.md
index 816379e..26e0783 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -33,6 +33,7 @@ Deze map bevat de vernieuwde documentatie voor de gekozen `wellness/self-managem
 - Database: `Supabase PostgreSQL`
 - Authenticatie: `Supabase Auth`
 - UI foundation in de app: `Tailwind CSS + shadcn/ui`
+- Visueel thema in de app: `Dusk` met dark-mode prioriteit en semantische statuskleuren
 
 ## Actuele app-status
 
@@ -59,6 +60,8 @@ Deze map bevat de vernieuwde documentatie voor de gekozen `wellness/self-managem
   Legt de actuele operationele en security-keuzes vast rond repositorybescherming, Vercel-deploys en secretbeheer.
 - [gpt-instructies.md](./gpt-instructies.md)
   Bundelt de inhoudelijke instructies en expliciete keuzes die in deze context zijn gegeven als compacte bron voor vervolgwerk.
+- [inspannings-monitor-09-dusk-theme-specificatie-v01.md](./inspannings-monitor-09-dusk-theme-specificatie-v01.md)
+  Legt het leidende Dusk-thema vast voor kleur, typografie, iconografie, motion en toegankelijkheidsregels in de app.
 
 ## Backlog en Linear
 
diff --git a/docs/inspannings-monitor-09-dusk-theme-specificatie-v01.md b/docs/inspannings-monitor-09-dusk-theme-specificatie-v01.md
new file mode 100644
index 0000000..66769a3
--- /dev/null
+++ b/docs/inspannings-monitor-09-dusk-theme-specificatie-v01.md
@@ -0,0 +1,620 @@
+# Inspannings Monitor — 09 · Dusk Theme Specificatie
+
+**Versie:** v0.1 · **Datum:** 2026-04-19 · **Status:** Normatief, basis nu in code doorgevoerd  
+**Scope:** UI-thema voor Next.js 16 + shadcn/ui + Tailwind v4 codebase  
+**Variant:** Dusk · **Dark mode:** Prioriteit · **Icon-set:** Lucide
+
+Bij conflict met eerdere documenten wint deze specificatie voor alles wat
+visueel design betreft. Functioneel gedrag blijft geregeld in
+`02-functionele-specificatie-mvp`.
+
+## 0 · Implementatiestatus
+
+Per 2026-04-19 is de basis van dit thema in de app doorgevoerd:
+
+- centrale `oklch()`-tokens in `app/globals.css`
+- `Inter Tight` + `IBM Plex Mono` via `next/font`
+- dark mode als standaard via `next-themes`
+- semantische componentvarianten voor cards, alerts en buttons
+- Dusk-shell op landing, dashboard, auth, onboarding, check-in, planning en settings
+- accessibility-polish voor focus, keuzegroepen en de EnergyMeter-progressbar
+
+Nog bewust iteratief:
+
+- fijnslijpen van iconmapping per view
+- laatste micro-spacing en copy-patronen in nieuwe features
+- eventuele theme toggle als productkeuze voor later
+
+---
+
+## 1 · Rationale
+
+Inspannings Monitor richt zich op volwassenen die rust zoeken in het
+plannen van hun energie. Dusk is gekozen omdat:
+
+- **Warme papertone** (ivory, L 97%) vermindert klinische feel — de app
+  is expliciet *wellness*, geen medisch hulpmiddel.
+- **Gedempte indigo primary** (hue 262, chroma 0.11) voelt kalm en
+  "avondlicht" aan. Past bij de dagelijkse lus (ochtendcheck-in →
+  dagplanning → avondreflectie) die doorloopt tot de avond.
+- **Whisper-quiet contrast** (nooit echt zwart-op-wit) voorkomt
+  schermmoeheid en matcht de rustige copywriting.
+- **Dark mode als spiegel** in dezelfde hue, iets hogere chroma op ink —
+  identiteit blijft behouden zonder saai navy te worden.
+
+### Niet-doelen
+
+- Geen medische signalen (geen rood-groen triage-semantiek).
+- Geen "motivational" UI (geen grote cijfers, geen gamification-kleur).
+- Geen hoge-energie accenten (chroma > 0.13 uitgesloten).
+
+---
+
+## 2 · Kleurpalet
+
+Alle kleuren in **oklch()**. Namen volgen shadcn/ui-conventies zodat alle
+bestaande componenten zonder aanpassing werken.
+
+### 2.1 · Light mode
+
+| Token | Waarde | Gebruik |
+| --- | --- | --- |
+| `--background` | `oklch(97% 0.008 80)` | Paper |
+| `--muted` | `oklch(95% 0.012 82)` | Paper-soft (rail, rustvlak) |
+| `--card` | `oklch(99% 0.004 80)` | Kaartoppervlak |
+| `--popover` | `oklch(100% 0 0)` | Popovers, toasts, sheets |
+| `--foreground` | `oklch(22% 0.03 262)` | Primaire tekst (contrast 14.2:1) |
+| `--muted-foreground` | `oklch(58% 0.015 262)` | Secundaire tekst (AA 4.5:1) |
+| `--primary` | `oklch(44% 0.11 262)` | Muted indigo |
+| `--primary-foreground` | `oklch(98% 0.01 262)` | Tekst op primary |
+| `--secondary` / `--accent` | `oklch(92% 0.03 262)` | Primary-soft vlak |
+| `--border` | `oklch(22% 0.03 262 / 0.10)` | Hairline |
+| `--input` | `oklch(22% 0.03 262 / 0.12)` | Form border |
+| `--ring` | `oklch(44% 0.11 262)` | Focus |
+| `--destructive` | `oklch(58% 0.16 25)` | Alleen echte destructieve acties |
+| `--success` | `oklch(62% 0.09 155)` | Succes, voltooid |
+| `--warning` | `oklch(72% 0.10 70)` | Budget-overschrijding |
+
+### 2.2 · Dark mode
+
+| Token | Waarde |
+| --- | --- |
+| `--background` | `oklch(17% 0.02 262)` |
+| `--card` | `oklch(22% 0.025 262)` |
+| `--popover` | `oklch(22% 0.025 262)` |
+| `--foreground` | `oklch(96% 0.008 80)` |
+| `--muted` | `oklch(26% 0.025 262)` |
+| `--muted-foreground` | `oklch(70% 0.015 262)` |
+| `--primary` | `oklch(78% 0.08 262)` |
+| `--primary-foreground` | `oklch(20% 0.03 262)` |
+| `--secondary` | `oklch(28% 0.03 262)` |
+| `--accent` | `oklch(30% 0.04 262)` |
+| `--border` | `oklch(100% 0 0 / 0.10)` |
+| `--ring` | `oklch(78% 0.08 262)` |
+| `--destructive` | `oklch(70% 0.16 25)` |
+| `--success` | `oklch(74% 0.09 155)` |
+| `--warning` | `oklch(80% 0.10 70)` |
+
+### 2.3 · Charts
+
+| Token | Waarde | Gebruik |
+| --- | --- | --- |
+| `--chart-1` | `oklch(44% 0.11 262)` | Vandaag / primair |
+| `--chart-2` | `oklch(60% 0.09 262)` | Gemiddelde / trend |
+| `--chart-3` | `oklch(70% 0.10 50)` | Accent amber — alleen voor overschrijding |
+| `--chart-4` | `oklch(62% 0.09 155)` | Succestint |
+| `--chart-5` | `oklch(80% 0.03 262)` | Overige dagen / achtergrond |
+
+> **Regel:** rood (`--destructive`) nooit gebruiken voor budget — dat is
+> `--warning` (amber). Rood is gereserveerd voor "verwijder account",
+> "annuleer abonnement" en vergelijkbaar.
+
+---
+
+## 3 · Typografie
+
+Eén UI-font: **Inter Tight**. Monospace voor cijfers en timestamps in
+ondersteunende posities: **IBM Plex Mono**. De huidige display-serif
+stack wordt verwijderd.
+
+### 3.1 · Schaal
+
+| Rol | Grootte | Gewicht | Letterspacing | Line-height |
+| --- | --- | --- | --- | --- |
+| H1 | 42 | 500 | -0.03em | 1.08 |
+| H2 | 22 | 600 | -0.02em | 1.2 |
+| H3 | 15 | 600 | 0 | 1.3 |
+| Body | 15 | 400 | 0 | 1.7 |
+| Micro | 12 | 400 | 0 | 1.5 |
+| Eyebrow | 11 | 600 | 0.16em uppercase | 1.4 |
+| Number | variabel | 500 | -0.02em | 1.2 |
+
+### 3.2 · Regels
+
+- Alle cijfers in UI krijgen `font-variant-numeric: tabular-nums`. Dit
+  staat globaal op `body` en wordt niet ongedaan gemaakt.
+- Letterspacing op headings negatief (-0.02 / -0.03) — geen condensed
+  gevoel.
+- Body line-height 1.65–1.7.
+- Geen font-weight onder 400 — zwakke tekst is onleesbaar op low-contrast
+  paper.
+- Geen serif in UI meer. Serif eventueel alleen in gegenereerde PDF's.
+
+---
+
+## 4 · Iconografie — Lucide
+
+Set: **lucide-react** (al in shadcn-stack). Alle iconen met
+`strokeWidth={1.5}`, `strokeLinecap="round"`, `strokeLinejoin="round"`.
+Default grootte **18px** in UI, **20px** in cards, **16px** inline. Kleur
+erft via `currentColor` — nooit hardcoden.
+
+### 4.1 · Voorgeschreven mapping
+
+| Icoon | Doel |
+| --- | --- |
+| `Sun` | Ochtendcheck-in |
+| `Moon` | Avondreflectie |
+| `Zap` | Energie / budget |
+| `Calendar` | Dagplanning |
+| `Clock` | Tijdstip / duur |
+| `Heart` | Welzijn / herstel |
+| `Pencil` | Notitie bewerken |
+| `Settings` | Instellingen |
+| `Plus` | Activiteit toevoegen |
+| `Check` | Klaar / voltooid |
+| `AlertCircle` | Buiten budget (warning) |
+| `LogOut` | Uitloggen |
+
+### 4.2 · Regels
+
+- Nooit twee verschillende icoon-sets mixen in één view.
+- Rood (`text-destructive`) alleen op echte destructieve acties, nooit
+  voor "over budget" — daar `text-[--warning]` (amber) gebruiken.
+- Iconen zijn stil: geen hover-animatie, geen kleurwissel behalve de
+  natuurlijke `hover:text-primary` van het parent-element.
+- Iconen met `aria-hidden` tenzij ze de enige labeldrager zijn.
+
+---
+
+## 5 · Radius & elevatie
+
+| Token | Waarde | Gebruik |
+| --- | --- | --- |
+| `--radius` | `14px` | Kaarten, inputs (basis) |
+| `--radius-sm` | `8px` | Chips, dense items |
+| `--radius-lg` | `21px` | Hero cards, dialogs |
+| `--radius-xl` | `25px` | Sheet / drawer |
+| `--radius-full` | `9999px` | Buttons (pill), avatars |
+| `--shadow-1` | 1px + 3px drop | Flat kaarten |
+| `--shadow-2` | 4/16px drop | Hover, verhoogde kaarten |
+| `--shadow-3` | 24/60px drop | Popovers, toasts, modals |
+
+Alle schaduwen zijn indigo-getint (niet neutraal grijs) zodat ze
+harmoniseren met paper en ink.
+
+---
+
+## 6 · Motion
+
+- Standaard transitieduur **160 ms**, easing
+  `cubic-bezier(.2, .7, .2, 1)`.
+- Meter- en ring-animaties: **400 ms** enter, geen loop.
+- Modals / popovers: **180 ms** fade + 6 px translate-Y.
+- `prefers-reduced-motion: reduce` schakelt alles naar **0.01 ms**.
+- Geen parallax, geen scroll-linked animaties.
+
+---
+
+## 7 · Toegankelijkheid
+
+- Body-tekst minimaal WCAG AA (4.5:1). Primary-knop AAA in beide modes.
+- Focus-ring: `2px solid var(--ring)` met `outline-offset: 2px` —
+  **nooit** `outline: none` zonder vervanging.
+- Hit-targets minimaal 40×40 desktop, **44×44 op touch**.
+- Scale-buttons (1–10 in check-in): `aria-label="Energie {n} van 10"` +
+  `aria-pressed`.
+- Alle getalwaarden krijgen een leesbare `aria-label`
+  (bijv. "8 komma 1 punten van 14").
+- Kleur is nooit de enige signaaldrager — "binnen budget" krijgt altijd
+  ook tekst of een icoon.
+- Nederlands is de primaire taal. Screen-reader-output moet in het
+  Nederlands kloppen (decimale komma, niet punt).
+
+---
+
+## 8 · Implementatie
+
+### 8.1 · `app/globals.css`
+
+Vervang de inhoud van `:root` en voeg `.dark` toe. Namen blijven
+shadcn-compatibel; alleen waarden wijzigen.
+
+```css
+@import "tailwindcss";
+@import "tw-animate-css";
+
+@custom-variant dark (&:is(.dark *));
+
+:root {
+  /* Type */
+  --font-body: var(--font-inter-tight), ui-sans-serif, system-ui, sans-serif;
+  --font-display: var(--font-body);
+  --font-mono: var(--font-plex-mono), ui-monospace, monospace;
+
+  /* Surfaces */
+  --background:         oklch(97% 0.008 80);
+  --foreground:         oklch(22% 0.03 262);
+  --card:               oklch(99% 0.004 80);
+  --card-foreground:    oklch(22% 0.03 262);
+  --popover:            oklch(100% 0 0);
+  --popover-foreground: oklch(22% 0.03 262);
+
+  /* Primary — muted indigo */
+  --primary:              oklch(44% 0.11 262);
+  --primary-foreground:   oklch(98% 0.01 262);
+  --secondary:            oklch(92% 0.03 262);
+  --secondary-foreground: oklch(44% 0.11 262);
+
+  /* Muted & accent */
+  --muted:             oklch(95% 0.012 82);
+  --muted-foreground:  oklch(58% 0.015 262);
+  --accent:            oklch(92% 0.03 262);
+  --accent-foreground: oklch(44% 0.11 262);
+
+  /* Status */
+  --destructive: oklch(58% 0.16 25);
+  --success:     oklch(62% 0.09 155);
+  --warning:     oklch(72% 0.10 70);
+
+  /* Lijnen & focus */
+  --border: oklch(22% 0.03 262 / 0.10);
+  --input:  oklch(22% 0.03 262 / 0.12);
+  --ring:   oklch(44% 0.11 262);
+
+  /* Charts */
+  --chart-1: oklch(44% 0.11 262);
+  --chart-2: oklch(60% 0.09 262);
+  --chart-3: oklch(70% 0.10 50);
+  --chart-4: oklch(62% 0.09 155);
+  --chart-5: oklch(80% 0.03 262);
+
+  /* Sidebar */
+  --sidebar:                    oklch(95% 0.012 82);
+  --sidebar-foreground:         oklch(22% 0.03 262);
+  --sidebar-primary:            oklch(44% 0.11 262);
+  --sidebar-primary-foreground: oklch(98% 0.01 262);
+  --sidebar-accent:             oklch(92% 0.03 262);
+  --sidebar-accent-foreground:  oklch(44% 0.11 262);
+  --sidebar-border:             oklch(22% 0.03 262 / 0.08);
+  --sidebar-ring:               oklch(44% 0.11 262);
+
+  /* Radius & elevatie */
+  --radius: 14px;
+  --shadow-1: 0 1px 2px oklch(25% 0.03 262 / 0.06), 0 1px 3px oklch(25% 0.03 262 / 0.04);
+  --shadow-2: 0 4px 16px oklch(25% 0.03 262 / 0.08), 0 1px 2px oklch(25% 0.03 262 / 0.04);
+  --shadow-3: 0 24px 60px oklch(25% 0.03 262 / 0.10), 0 2px 6px oklch(25% 0.03 262 / 0.04);
+}
+
+.dark {
+  --background:         oklch(17% 0.02 262);
+  --foreground:         oklch(96% 0.008 80);
+  --card:               oklch(22% 0.025 262);
+  --card-foreground:    oklch(96% 0.008 80);
+  --popover:            oklch(22% 0.025 262);
+  --popover-foreground: oklch(96% 0.008 80);
+
+  --primary:              oklch(78% 0.08 262);
+  --primary-foreground:   oklch(20% 0.03 262);
+  --secondary:            oklch(28% 0.03 262);
+  --secondary-foreground: oklch(92% 0.02 262);
+
+  --muted:             oklch(26% 0.025 262);
+  --muted-foreground:  oklch(70% 0.015 262);
+  --accent:            oklch(30% 0.04 262);
+  --accent-foreground: oklch(92% 0.02 262);
+
+  --destructive: oklch(70% 0.16 25);
+  --success:     oklch(74% 0.09 155);
+  --warning:     oklch(80% 0.10 70);
+
+  --border: oklch(100% 0 0 / 0.10);
+  --input:  oklch(100% 0 0 / 0.12);
+  --ring:   oklch(78% 0.08 262);
+
+  --chart-1: oklch(78% 0.08 262);
+  --chart-2: oklch(60% 0.09 262);
+  --chart-3: oklch(74% 0.10 50);
+  --chart-4: oklch(74% 0.09 155);
+  --chart-5: oklch(45% 0.03 262);
+
+  --sidebar:                    oklch(20% 0.025 262);
+  --sidebar-foreground:         oklch(96% 0.008 80);
+  --sidebar-primary:            oklch(78% 0.08 262);
+  --sidebar-primary-foreground: oklch(20% 0.03 262);
+  --sidebar-accent:             oklch(28% 0.03 262);
+  --sidebar-accent-foreground:  oklch(92% 0.02 262);
+  --sidebar-border:             oklch(100% 0 0 / 0.08);
+  --sidebar-ring:               oklch(78% 0.08 262);
+}
+
+@theme inline {
+  --font-sans: var(--font-body);
+  --font-mono: var(--font-mono);
+  --color-background: var(--background);
+  --color-foreground: var(--foreground);
+  --color-card: var(--card);
+  --color-card-foreground: var(--card-foreground);
+  --color-popover: var(--popover);
+  --color-popover-foreground: var(--popover-foreground);
+  --color-primary: var(--primary);
+  --color-primary-foreground: var(--primary-foreground);
+  --color-secondary: var(--secondary);
+  --color-secondary-foreground: var(--secondary-foreground);
+  --color-muted: var(--muted);
+  --color-muted-foreground: var(--muted-foreground);
+  --color-accent: var(--accent);
+  --color-accent-foreground: var(--accent-foreground);
+  --color-destructive: var(--destructive);
+  --color-border: var(--border);
+  --color-input: var(--input);
+  --color-ring: var(--ring);
+  --color-chart-1: var(--chart-1);
+  --color-chart-2: var(--chart-2);
+  --color-chart-3: var(--chart-3);
+  --color-chart-4: var(--chart-4);
+  --color-chart-5: var(--chart-5);
+  --color-sidebar: var(--sidebar);
+  --color-sidebar-foreground: var(--sidebar-foreground);
+  --color-sidebar-primary: var(--sidebar-primary);
+  --color-sidebar-primary-foreground: var(--sidebar-primary-foreground);
+  --color-sidebar-accent: var(--sidebar-accent);
+  --color-sidebar-accent-foreground: var(--sidebar-accent-foreground);
+  --color-sidebar-border: var(--sidebar-border);
+  --color-sidebar-ring: var(--sidebar-ring);
+  --radius-sm: calc(var(--radius) * 0.6);
+  --radius-md: calc(var(--radius) * 0.8);
+  --radius-lg: var(--radius);
+  --radius-xl: calc(var(--radius) * 1.4);
+  --radius-2xl: calc(var(--radius) * 1.8);
+}
+
+@layer base {
+  * { @apply border-border outline-ring/50; }
+  html {
+    color-scheme: light dark;
+    background: var(--background);
+    color: var(--foreground);
+    font-family: var(--font-body);
+  }
+  body {
+    margin: 0;
+    min-height: 100vh;
+    font-family: var(--font-body);
+    -webkit-font-smoothing: antialiased;
+    font-variant-numeric: tabular-nums;
+  }
+  button:not(:disabled), [role="button"]:not(:disabled) { cursor: pointer; }
+
+  :focus-visible { outline: 2px solid var(--ring); outline-offset: 2px; }
+
+  @media (prefers-reduced-motion: reduce) {
+    *, *::before, *::after {
+      animation-duration: 0.01ms !important;
+      transition-duration: 0.01ms !important;
+    }
+  }
+}
+```
+
+### 8.2 · `app/layout.tsx` — fonts via `next/font`
+
+```tsx
+import { Inter_Tight, IBM_Plex_Mono } from "next/font/google";
+
+const interTight = Inter_Tight({
+  subsets: ["latin"],
+  variable: "--font-inter-tight",
+  display: "swap",
+  weight: ["400", "500", "600", "700"],
+});
+
+const plexMono = IBM_Plex_Mono({
+  subsets: ["latin"],
+  variable: "--font-plex-mono",
+  display: "swap",
+  weight: ["400", "500"],
+});
+
+export default function RootLayout({ children }: { children: React.ReactNode }) {
+  return (
+    <html
+      lang="nl"
+      suppressHydrationWarning
+      className={`${interTight.variable} ${plexMono.variable}`}
+    >
+      <body>
+        <Providers>{children}</Providers>
+      </body>
+    </html>
+  );
+}
+```
+
+Verwijder de bestaande `--font-display` (serif) declaratie en alle
+`font-[family-name:var(--font-display)]` classes uit views.
+
+### 8.3 · Dark mode toggle via `next-themes`
+
+```bash
+npm i next-themes
+```
+
+```tsx
+// app/theme-provider.tsx
+"use client";
+import { ThemeProvider } from "next-themes";
+
+export function Providers({ children }: { children: React.ReactNode }) {
+  return (
+    <ThemeProvider
+      attribute="class"
+      defaultTheme="system"
+      enableSystem
+      disableTransitionOnChange
+    >
+      {children}
+    </ThemeProvider>
+  );
+}
+```
+
+### 8.4 · `components/ui/theme-toggle.tsx`
+
+```tsx
+"use client";
+import { Moon, Sun } from "lucide-react";
+import { useTheme } from "next-themes";
+import { Button } from "./button";
+
+export function ThemeToggle() {
+  const { theme, setTheme } = useTheme();
+  const isDark = theme === "dark";
+  return (
+    <Button
+      variant="ghost"
+      size="icon"
+      aria-label={isDark ? "Schakel naar licht" : "Schakel naar donker"}
+      onClick={() => setTheme(isDark ? "light" : "dark")}
+    >
+      {isDark
+        ? <Sun className="size-[18px]" strokeWidth={1.5} />
+        : <Moon className="size-[18px]" strokeWidth={1.5} />}
+    </Button>
+  );
+}
+```
+
+### 8.5 · Class-cleanup tabel
+
+Hardcoded Tailwind-kleuren ondermijnen het thema. Per view zoek-en-vervang:
+
+| Oud | Nieuw |
+| --- | --- |
+| `bg-white/75 backdrop-blur` | `bg-card` |
+| `bg-white` | `bg-card` of `bg-popover` |
+| `text-slate-900` | `text-foreground` |
+| `text-slate-700` / `text-slate-600` / `text-slate-500` | `text-muted-foreground` |
+| `border-black/10` | `border-border` |
+| `rounded-[2rem]` / `rounded-[1.75rem]` | `rounded-xl` (= 1.4× `--radius`) |
+| `shadow-[0_18px_60px_...]` | `shadow-[var(--shadow-3)]` |
+| `shadow-[0_12px_40px_...]` | `shadow-[var(--shadow-2)]` |
+| `bg-[radial-gradient(...)]` hero | verwijderen — paper is al warm |
+| `font-[family-name:var(--font-display)]` | verwijderen — één font |
+| `bg-amber-50 text-amber-950` (budget warning) | `bg-muted text-foreground` + `border-[color:var(--warning)]` |
+
+### 8.6 · Voorbeeld-diff — `app/dashboard/page.tsx`
+
+```diff
+- <main className="min-h-screen bg-[radial-gradient(circle_at_top,_rgba(167,201,87,0.22),_transparent_32%),linear-gradient(180deg,_#f5f4ee_0%,_#eef2e6_100%)] px-6 py-10 text-slate-900 sm:px-8">
++ <main className="min-h-screen bg-background px-6 py-10 text-foreground sm:px-8">
+
+- <header className="... rounded-[2rem] border border-black/10 bg-white/75 ... shadow-[0_18px_60px_rgba(71,85,105,0.12)] backdrop-blur ...">
++ <header className="... rounded-xl border border-border bg-card shadow-[var(--shadow-2)] ...">
+
+- <CardTitle className="text-lg text-slate-900">Cookie-based sessie actief</CardTitle>
++ <CardTitle className="text-lg text-foreground">Cookie-based sessie actief</CardTitle>
+```
+
+### 8.7 · Iconen in componenten
+
+```tsx
+import { Sun, Calendar, Zap, Plus } from "lucide-react";
+
+// CheckInCard header:
+<Sun className="size-[18px] text-primary" strokeWidth={1.5} aria-hidden />
+
+// PlanningPage primaire actie:
+<Button>
+  <Plus className="size-4" strokeWidth={1.5} aria-hidden />
+  Activiteit
+</Button>
+```
+
+---
+
+## 9 · Chart-specificatie
+
+De week-grafiek op het dashboard gebruikt `--chart-1` voor "vandaag" en
+`--chart-5` voor overige dagen. `--chart-3` (amber) markeert
+overschrijdingen. **Nooit** `--destructive` (rood) voor budget — dat is
+`--warning`.
+
+---
+
+## 10 · Rollout-plan
+
+| PR | Scope | Omvang |
+| --- | --- | --- |
+| 1 | `globals.css` vervangen (§8.1) | klein |
+| 2 | Fonts via `next/font` + cleanup `--font-display` (§8.2) | klein |
+| 3 | Dark mode — `next-themes`, `ThemeToggle` in dashboard + settings (§8.3, §8.4) | middel |
+| 4 | View cleanup — één commit per route: landing, dashboard, check-in, planning, settings, onboarding (§8.5, §8.6) | groot |
+| 5 | Lucide-standaardisatie — alle iconen 1.5 stroke, `size-[18px]` default (§4) | klein |
+| 6 | `/styleguide` route achter `NEXT_PUBLIC_ENABLE_STYLEGUIDE` vlag | klein |
+
+Richtlijn: maximaal één PR per dag in productie — de grote view-cleanup
+splitsen over meerdere dagen zodat visual regression per route
+beoordeeld kan worden.
+
+---
+
+## 11 · Acceptatiecriteria
+
+- [ ] Landing, dashboard, ochtendcheck-in, dagplanning, instellingen en
+  onboarding renderen correct in zowel light als dark.
+- [ ] Er zijn geen hardcoded `text-slate-*`, `bg-white*`, `border-black/*`
+  of hex-kleurwaarden meer in `app/**/*.tsx` of `components/**/*.tsx`.
+- [ ] Theme-toggle werkt zonder flash; SSR levert de juiste kleur bij
+  eerste render (dankzij `suppressHydrationWarning` + `next-themes`).
+- [ ] Lighthouse a11y-score ≥ 95 op dashboard in beide modes.
+- [ ] `prefers-reduced-motion` getest — meter-animaties zijn uit.
+- [ ] Alle pt-waarden (check-in, planning, dagbudget) gebruiken
+  `tabular-nums`.
+- [ ] Focus-ring zichtbaar op alle tab-reachable elementen.
+- [ ] `docs/inspannings-monitor-09-dusk-theme-specificatie-v01.md`
+  gelinkt vanuit `docs/README.md`.
+
+---
+
+## 12 · Bestanden die wijzigen
+
+| Bestand | Wijziging |
+| --- | --- |
+| `app/globals.css` | Vervangen (§8.1) |
+| `app/layout.tsx` | Fonts + Providers wrap (§8.2, §8.3) |
+| `app/theme-provider.tsx` | Nieuw (§8.3) |
+| `components/ui/theme-toggle.tsx` | Nieuw (§8.4) |
+| `app/page.tsx` | Class cleanup (§8.5, §8.6) |
+| `app/dashboard/page.tsx` | Cleanup + `ThemeToggle` |
+| `app/check-in/**/*.tsx` | Cleanup + Lucide `Sun` icon |
+| `app/planning/**/*.tsx` | Cleanup + Lucide `Calendar` / `Plus` |
+| `app/settings/page.tsx` | Cleanup + `ThemeToggle` |
+| `app/onboarding/**/*.tsx` | Cleanup |
+| `components/check-in/*.tsx` | Tokens + `aria-label` op scale-buttons |
+| `components/planning/energy-meter-card.tsx` | Tokens + `tabular-nums` + reduced-motion |
+| `app/styleguide/page.tsx` | Nieuw — primitives preview (flag-gated) |
+| `docs/README.md` | Link naar deze spec toevoegen |
+
+---
+
+## 13 · Wijzigingslog
+
+| Versie | Datum | Wijziging |
+| --- | --- | --- |
+| v0.1 | 2026-04-19 | Initiële Dusk-specificatie. Variant gekozen na exploratie van 4 blue-leaning opties (Dusk, Harbor, Linen, Meridian). |
+
+---
+
+*Dit document is de normatieve bron voor het Dusk-thema. Wijzigingen
+vereisen versiebump en een corresponderende entry in §13.*