feat(frontend): moderneres visuelles Redesign (Farben, Tiefe, Dashboard-Hero)

Kartenhintergrund und Seitenhintergrund waren fast farbgleich, wodurch
alles flach wirkte trotz vorhandenem Schatten. Staerkerer Kontrast
(--background/--card/--muted/--border), neue Gradient- und
Schatten-Tokens (--gradient-honey/-sage/-sky, --shadow-soft/-elevated).

Card-Komponente: rounded-2xl, echter sichtbarer Schatten, optionaler
Hover-Lift (interactive-Prop). Sidebar: solide Gradient-Badge, kraeftiger
Active-Pill-Zustand statt blassem Tint. Header: sticky mit Blur-Schatten
statt hartem Rand. Dashboard: Gradient-Hero mit Begruessung und
Honeycomb-Muster, farbige Gradient-Icon-Badges pro KPI-Kachel,
Hinweise-Zeilen mit Icon statt rohem Enum-Badge (dabei toten
CONSPICUOUS_COLONY-Style-Key gefunden und auf COLONY_ATTENTION
korrigiert). Honeycomb-Hintergrund aus der Login-Seite in eine
gemeinsame Komponente extrahiert und dort mit dem gleichen
Gradient-Badge-Header konsistent gemacht.

ApiCore-Frontend/src/app/(app)/dashboard/page.tsx

@@ -10,11 +10,14 @@ import {
   type LucideIcon,
   MapPin,
   Layers,
+  PackageSearch,
+  ShieldAlert,
 } from "lucide-react";
+import { useAuth } from "@/lib/auth/auth-context";
 import { fetchDashboardAlerts, fetchDashboardSummary } from "@/lib/dashboard/api";
-import { DashboardAlert } from "@/lib/dashboard/types";
-import { Badge } from "@/components/ui/badge";
+import { DashboardAlert, DashboardAlertType } from "@/lib/dashboard/types";
 import { Card, CardContent } from "@/components/ui/card";
+import { HoneycombPattern } from "@/components/honeycomb-pattern";
 
 function alertHref(alert: DashboardAlert): string | null {
   if (alert.relatedType === "Colony") return `/colonies/${alert.relatedId}`;
@@ -23,26 +26,43 @@ function alertHref(alert: DashboardAlert): string | null {
   return null;
 }
 
-const ALERT_STYLES: Record<string, string> = {
-  OVERDUE_TASK: "border-destructive/30 bg-destructive/5",
-  CONSPICUOUS_COLONY: "border-warning/40 bg-warning/10",
-  LOW_STOCK: "border-warning/40 bg-warning/10",
-};
+function greeting(): string {
+  const hour = new Date().getHours();
+  if (hour < 11) return "Guten Morgen";
+  if (hour < 18) return "Guten Tag";
+  return "Guten Abend";
+}
 
 interface StatTile {
   label: string;
   value: number;
   icon: LucideIcon;
-  tone: "primary" | "secondary" | "warning";
+  gradient: string;
 }
 
-const TONE_CLASSES: Record<StatTile["tone"], string> = {
-  primary: "bg-primary/10 text-primary",
-  secondary: "bg-secondary/10 text-secondary",
-  warning: "bg-warning/15 text-warning-foreground",
+const ALERT_META: Record<
+  DashboardAlertType,
+  { label: string; icon: LucideIcon; className: string }
+> = {
+  OVERDUE_TASK: {
+    label: "Aufgabe überfällig",
+    icon: ListTodo,
+    className: "border-destructive/30 bg-destructive/5",
+  },
+  COLONY_ATTENTION: {
+    label: "Volk auffällig",
+    icon: ShieldAlert,
+    className: "border-warning/40 bg-warning/10",
+  },
+  LOW_STOCK: {
+    label: "Bestand niedrig",
+    icon: PackageSearch,
+    className: "border-warning/40 bg-warning/10",
+  },
 };
 
 export default function DashboardPage() {
+  const { user } = useAuth();
   const { data: summary, isLoading: summaryLoading } = useQuery({
     queryKey: ["dashboard", "summary"],
     queryFn: fetchDashboardSummary,
@@ -54,25 +74,62 @@ export default function DashboardPage() {
 
   const tiles: StatTile[] = summary
     ? [
-        { label: "Aktive Bienenstände", value: summary.apiariesActive, icon: MapPin, tone: "primary" },
-        { label: "Aktive Völker", value: summary.coloniesActive, icon: Layers, tone: "primary" },
-        { label: "Aktive Königinnen", value: summary.queensActive, icon: Crown, tone: "secondary" },
-        { label: "Offene Aufgaben", value: summary.openTasks, icon: ListTodo, tone: "secondary" },
-        { label: "Honigchargen", value: summary.honeyBatchesTotal, icon: Droplet, tone: "primary" },
+        {
+          label: "Aktive Bienenstände",
+          value: summary.apiariesActive,
+          icon: MapPin,
+          gradient: "var(--gradient-honey)",
+        },
+        {
+          label: "Aktive Völker",
+          value: summary.coloniesActive,
+          icon: Layers,
+          gradient: "var(--gradient-honey)",
+        },
+        {
+          label: "Aktive Königinnen",
+          value: summary.queensActive,
+          icon: Crown,
+          gradient: "var(--gradient-sage)",
+        },
+        {
+          label: "Offene Aufgaben",
+          value: summary.openTasks,
+          icon: ListTodo,
+          gradient: "var(--gradient-sky)",
+        },
+        {
+          label: "Honigchargen",
+          value: summary.honeyBatchesTotal,
+          icon: Droplet,
+          gradient: "var(--gradient-honey)",
+        },
         {
           label: "Artikel unter Mindestbestand",
           value: summary.stockItemsLowCount,
           icon: AlertTriangle,
-          tone: summary.stockItemsLowCount > 0 ? "warning" : "secondary",
+          gradient:
+            summary.stockItemsLowCount > 0
+              ? "linear-gradient(135deg, oklch(0.72 0.15 70) 0%, oklch(0.56 0.15 50) 100%)"
+              : "var(--gradient-sage)",
         },
       ]
     : [];
 
   return (
     <main className="flex flex-col gap-6 p-4 sm:p-6">
-      <div>
-        <h1 className="text-2xl font-semibold tracking-tight">Dashboard</h1>
-        <p className="text-sm text-muted-foreground">Überblick über deine Imkerei</p>
+      <div
+        className="relative overflow-hidden rounded-2xl px-5 py-6 text-white shadow-[var(--shadow-elevated)] sm:px-8 sm:py-8"
+        style={{ background: "var(--gradient-honey)" }}
+      >
+        <HoneycombPattern className="pointer-events-none absolute inset-0 h-full w-full text-white/[0.08]" />
+        <div className="relative flex flex-col gap-1">
+          <h1 className="font-heading text-2xl font-semibold tracking-tight sm:text-3xl">
+            {greeting()}
+            {user ? `, ${user.email.split("@")[0]}` : ""}
+          </h1>
+          <p className="text-sm text-white/85 sm:text-base">Überblick über deine Imkerei</p>
+        </div>
       </div>
 
       {summaryLoading ? <p className="text-sm text-muted-foreground">Lädt…</p> : null}
@@ -80,12 +137,13 @@ export default function DashboardPage() {
         {tiles.map((tile) => {
           const Icon = tile.icon;
           return (
-            <Card key={tile.label}>
+            <Card key={tile.label} interactive>
               <CardContent className="flex flex-col gap-3">
                 <div
-                  className={`flex size-9 items-center justify-center rounded-lg ${TONE_CLASSES[tile.tone]}`}
+                  className="flex size-10 items-center justify-center rounded-xl text-white shadow-[var(--shadow-soft)]"
+                  style={{ background: tile.gradient }}
                 >
-                  <Icon className="size-4.5" />
+                  <Icon className="size-5" />
                 </div>
                 <div>
                   <p className="text-2xl font-semibold tabular-nums">{tile.value}</p>
@@ -98,7 +156,7 @@ export default function DashboardPage() {
       </div>
 
       <div>
-        <h2 className="mb-3 text-lg font-semibold tracking-tight">Hinweise</h2>
+        <h2 className="mb-3 font-heading text-lg font-semibold tracking-tight">Hinweise</h2>
         <div className="flex flex-col gap-2">
           {alertsLoading ? <p className="text-sm text-muted-foreground">Lädt…</p> : null}
           {!alertsLoading && (!alerts || alerts.length === 0) ? (
@@ -110,21 +168,24 @@ export default function DashboardPage() {
           ) : null}
           {alerts?.map((alert) => {
             const href = alertHref(alert);
+            const meta = ALERT_META[alert.type];
+            const AlertIcon = meta?.icon ?? AlertTriangle;
             return (
               <div
                 key={`${alert.type}-${alert.relatedId}`}
-                className={`flex items-center justify-between rounded-xl border p-3 text-sm ${ALERT_STYLES[alert.type] ?? "border-border bg-card"}`}
+                className={`flex items-center gap-3 rounded-xl border p-3 text-sm shadow-[var(--shadow-soft)] ${meta?.className ?? "border-border bg-card"}`}
               >
-                <span>{alert.message}</span>
-                <div className="flex items-center gap-2">
-                  <Badge variant="secondary">{alert.type}</Badge>
+                <AlertIcon className="size-4.5 shrink-0 text-muted-foreground" />
+                <span className="flex-1">{alert.message}</span>
                 {href ? (
-                    <Link className="font-medium text-primary underline-offset-4 hover:underline" href={href}>
+                  <Link
+                    className="shrink-0 font-medium text-primary underline-offset-4 hover:underline"
+                    href={href}
+                  >
                     Ansehen
                   </Link>
                 ) : null}
               </div>
-              </div>
             );
           })}
         </div>

ApiCore-Frontend/src/app/(app)/layout.tsx

@@ -30,12 +30,17 @@ export default function AppLayout({ children }: { children: ReactNode }) {
     <div className="flex min-h-screen">
       <Sidebar user={user} />
       <div className="flex min-w-0 flex-1 flex-col">
-        <header className="flex items-center justify-between gap-3 border-b bg-card px-4 py-2.5 sm:justify-end sm:px-6">
+        <header className="sticky top-0 z-10 flex items-center justify-between gap-3 bg-card/85 px-4 py-3 shadow-[var(--shadow-soft)] backdrop-blur-md sm:justify-end sm:px-6">
           <Link
             href="/dashboard"
             className="flex items-center gap-1.5 font-heading font-semibold sm:hidden"
           >
-            <Hexagon className="size-5 fill-primary/15 text-primary" strokeWidth={2.25} />
+            <span
+              className="flex size-7 items-center justify-center rounded-lg"
+              style={{ background: "var(--gradient-honey)" }}
+            >
+              <Hexagon className="size-4 fill-white/25 text-white" strokeWidth={2.25} />
+            </span>
             ApiCore
           </Link>
           <div className="flex shrink-0 items-center gap-2 text-sm">

ApiCore-Frontend/src/app/(app)/sidebar.tsx

@@ -93,13 +93,18 @@ function SidebarLink({ item, pathname }: { item: NavItem; pathname: string }) {
       href={item.href}
       aria-current={isActive ? "page" : undefined}
       className={cn(
-        "flex items-center gap-2.5 rounded-lg px-3 py-2 text-sm font-medium transition-colors duration-150",
+        "group relative flex items-center gap-2.5 rounded-xl px-3 py-2 text-sm font-medium transition-all duration-150",
         isActive
-          ? "bg-primary/10 text-primary"
-          : "text-muted-foreground hover:bg-accent hover:text-accent-foreground",
+          ? "bg-primary text-primary-foreground shadow-[var(--shadow-soft)]"
+          : "text-muted-foreground hover:bg-accent/70 hover:text-foreground",
       )}
     >
-      <Icon className="size-4.5 shrink-0" />
+      <Icon
+        className={cn(
+          "size-4.5 shrink-0 transition-transform duration-150",
+          !isActive && "group-hover:scale-110",
+        )}
+      />
       <span className="truncate">{item.label}</span>
     </Link>
   );
@@ -110,19 +115,24 @@ export function Sidebar({ user }: { user: AuthUser }) {
   const groups = user.role === "ADMIN" ? [...NAV_GROUPS, ADMIN_GROUP] : NAV_GROUPS;
 
   return (
-    <aside className="hidden w-60 shrink-0 flex-col gap-1 overflow-y-auto border-r bg-card px-3 py-4 sm:flex">
+    <aside className="relative z-10 hidden w-64 shrink-0 flex-col gap-1 overflow-y-auto bg-sidebar px-3 py-5 shadow-[var(--shadow-soft)] sm:flex">
       <Link
         href="/dashboard"
-        className="mb-4 flex items-center gap-2 px-2 font-heading text-lg font-semibold"
+        className="mb-5 flex items-center gap-2.5 px-2 font-heading text-lg font-semibold"
       >
-        <Hexagon className="size-5.5 fill-primary/15 text-primary" strokeWidth={2.25} />
+        <span
+          className="flex size-8 items-center justify-center rounded-xl shadow-[var(--shadow-soft)]"
+          style={{ background: "var(--gradient-honey)" }}
+        >
+          <Hexagon className="size-4.5 fill-white/25 text-white" strokeWidth={2.25} />
+        </span>
         ApiCore
       </Link>
-      <nav className="flex flex-1 flex-col gap-4">
+      <nav className="flex flex-1 flex-col gap-5">
         {groups.map((group, index) => (
           <div key={group.label ?? `group-${index}`} className="flex flex-col gap-0.5">
             {group.label ? (
-              <p className="px-3 pb-1 text-xs font-medium tracking-wide text-muted-foreground uppercase">
+              <p className="px-3 pb-1 text-xs font-semibold tracking-wide text-muted-foreground/80 uppercase">
                 {group.label}
               </p>
             ) : null}

ApiCore-Frontend/src/app/(auth)/login/page.tsx

@@ -7,6 +7,7 @@ import { useAuth } from "@/lib/auth/auth-context";
 import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
 import { Label } from "@/components/ui/label";
+import { HoneycombPattern } from "@/components/honeycomb-pattern";
 import {
   Card,
   CardContent,
@@ -15,33 +16,6 @@ import {
   CardTitle,
 } from "@/components/ui/card";
 
-function HoneycombBackdrop() {
-  return (
-    <svg
-      aria-hidden="true"
-      className="pointer-events-none absolute inset-0 h-full w-full text-primary/[0.07]"
-    >
-      <defs>
-        <pattern
-          id="honeycomb"
-          width="56"
-          height="97"
-          patternUnits="userSpaceOnUse"
-          patternTransform="scale(1)"
-        >
-          <path
-            fill="none"
-            stroke="currentColor"
-            strokeWidth="1.5"
-            d="M28 0 56 16.2 56 48.5 28 64.7 0 48.5 0 16.2Z M28 64.7 56 80.8 56 97 28 97 0 97 0 80.8Z"
-          />
-        </pattern>
-      </defs>
-      <rect width="100%" height="100%" fill="url(#honeycomb)" />
-    </svg>
-  );
-}
-
 export default function LoginPage() {
   const router = useRouter();
   const { login } = useAuth();
@@ -66,11 +40,16 @@ export default function LoginPage() {
 
   return (
     <main className="relative flex min-h-screen items-center justify-center overflow-hidden bg-background p-4">
-      <HoneycombBackdrop />
-      <Card className="relative w-full max-w-sm">
+      <HoneycombPattern />
+      <Card className="relative w-full max-w-sm shadow-[var(--shadow-elevated)]">
         <CardHeader>
-          <div className="mb-1 flex items-center gap-2">
-            <Hexagon className="size-6 fill-primary/15 text-primary" strokeWidth={2.25} />
+          <div className="mb-1 flex items-center gap-2.5">
+            <span
+              className="flex size-9 items-center justify-center rounded-xl shadow-[var(--shadow-soft)]"
+              style={{ background: "var(--gradient-honey)" }}
+            >
+              <Hexagon className="size-5 fill-white/25 text-white" strokeWidth={2.25} />
+            </span>
             <CardTitle className="text-lg">ApiCore</CardTitle>
           </div>
           <CardDescription>Digitale Imkereiverwaltung für Wabenhain</CardDescription>

ApiCore-Frontend/src/app/globals.css

@@ -65,24 +65,24 @@
 }
 
 :root {
-  --background: oklch(0.98 0.012 85);
-  --foreground: oklch(0.24 0.025 55);
-  --card: oklch(0.995 0.006 85);
-  --card-foreground: oklch(0.24 0.025 55);
-  --popover: oklch(0.995 0.006 85);
-  --popover-foreground: oklch(0.24 0.025 55);
-  --primary: oklch(0.6 0.135 50);
-  --primary-foreground: oklch(0.98 0.02 85);
-  --secondary: oklch(0.46 0.06 145);
+  --background: oklch(0.955 0.017 80);
+  --foreground: oklch(0.22 0.028 55);
+  --card: oklch(0.995 0.004 90);
+  --card-foreground: oklch(0.22 0.028 55);
+  --popover: oklch(0.995 0.004 90);
+  --popover-foreground: oklch(0.22 0.028 55);
+  --primary: oklch(0.6 0.15 48);
+  --primary-foreground: oklch(0.99 0.02 85);
+  --secondary: oklch(0.44 0.07 145);
   --secondary-foreground: oklch(0.98 0.015 100);
-  --muted: oklch(0.93 0.016 85);
-  --muted-foreground: oklch(0.5 0.03 65);
-  --accent: oklch(0.94 0.028 75);
-  --accent-foreground: oklch(0.28 0.04 50);
+  --muted: oklch(0.9 0.02 82);
+  --muted-foreground: oklch(0.48 0.032 65);
+  --accent: oklch(0.93 0.032 74);
+  --accent-foreground: oklch(0.26 0.045 50);
   --destructive: oklch(0.5 0.16 30);
-  --border: oklch(0.88 0.02 78);
-  --input: oklch(0.88 0.02 78);
-  --ring: oklch(0.6 0.135 50);
+  --border: oklch(0.85 0.024 78);
+  --input: oklch(0.85 0.024 78);
+  --ring: oklch(0.6 0.15 48);
   --warning: oklch(0.68 0.14 75);
   --warning-foreground: oklch(0.24 0.04 60);
   --success: oklch(0.46 0.06 145);
@@ -93,14 +93,19 @@
   --chart-4: oklch(0.5 0.16 30);
   --chart-5: oklch(0.55 0.05 250);
   --radius: 0.75rem;
-  --sidebar: oklch(0.98 0.012 85);
-  --sidebar-foreground: oklch(0.24 0.025 55);
-  --sidebar-primary: oklch(0.6 0.135 50);
-  --sidebar-primary-foreground: oklch(0.98 0.02 85);
-  --sidebar-accent: oklch(0.94 0.028 75);
-  --sidebar-accent-foreground: oklch(0.28 0.04 50);
-  --sidebar-border: oklch(0.88 0.02 78);
-  --sidebar-ring: oklch(0.6 0.135 50);
+  --sidebar: oklch(0.995 0.004 90);
+  --sidebar-foreground: oklch(0.22 0.028 55);
+  --sidebar-primary: oklch(0.6 0.15 48);
+  --sidebar-primary-foreground: oklch(0.99 0.02 85);
+  --sidebar-accent: oklch(0.93 0.032 74);
+  --sidebar-accent-foreground: oklch(0.26 0.045 50);
+  --sidebar-border: oklch(0.85 0.024 78);
+  --sidebar-ring: oklch(0.6 0.15 48);
+  --gradient-honey: linear-gradient(135deg, oklch(0.74 0.15 62) 0%, oklch(0.56 0.16 38) 100%);
+  --gradient-sage: linear-gradient(135deg, oklch(0.64 0.09 150) 0%, oklch(0.4 0.075 145) 100%);
+  --gradient-sky: linear-gradient(135deg, oklch(0.68 0.1 235) 0%, oklch(0.5 0.1 255) 100%);
+  --shadow-elevated: 0 1px 2px -1px oklch(0.3 0.05 50 / 8%), 0 8px 24px -8px oklch(0.3 0.05 50 / 16%);
+  --shadow-soft: 0 1px 2px -1px oklch(0.3 0.05 50 / 6%), 0 4px 12px -4px oklch(0.3 0.05 50 / 10%);
 }
 
 .dark {
@@ -139,6 +144,11 @@
   --sidebar-accent-foreground: oklch(0.94 0.02 80);
   --sidebar-border: oklch(1 0 0 / 12%);
   --sidebar-ring: oklch(0.72 0.13 55);
+  --gradient-honey: linear-gradient(135deg, oklch(0.62 0.14 55) 0%, oklch(0.38 0.13 40) 100%);
+  --gradient-sage: linear-gradient(135deg, oklch(0.5 0.08 148) 0%, oklch(0.3 0.06 145) 100%);
+  --gradient-sky: linear-gradient(135deg, oklch(0.55 0.09 235) 0%, oklch(0.34 0.09 255) 100%);
+  --shadow-elevated: 0 1px 2px -1px oklch(0 0 0 / 30%), 0 8px 24px -8px oklch(0 0 0 / 45%);
+  --shadow-soft: 0 1px 2px -1px oklch(0 0 0 / 25%), 0 4px 12px -4px oklch(0 0 0 / 30%);
 }
 
 @layer base {

ApiCore-Frontend/src/components/honeycomb-pattern.tsx

@@ -0,0 +1,31 @@
+interface HoneycombPatternProps {
+  className?: string;
+  id?: string;
+}
+
+export function HoneycombPattern({ className, id = "honeycomb" }: HoneycombPatternProps) {
+  return (
+    <svg
+      aria-hidden="true"
+      className={className ?? "pointer-events-none absolute inset-0 h-full w-full text-primary/[0.07]"}
+    >
+      <defs>
+        <pattern
+          id={id}
+          width="56"
+          height="97"
+          patternUnits="userSpaceOnUse"
+          patternTransform="scale(1)"
+        >
+          <path
+            fill="none"
+            stroke="currentColor"
+            strokeWidth="1.5"
+            d="M28 0 56 16.2 56 48.5 28 64.7 0 48.5 0 16.2Z M28 64.7 56 80.8 56 97 28 97 0 97 0 80.8Z"
+          />
+        </pattern>
+      </defs>
+      <rect width="100%" height="100%" fill={`url(#${id})`} />
+    </svg>
+  );
+}

ApiCore-Frontend/src/components/ui/card.tsx

@@ -5,14 +5,17 @@ import { cn } from "@/lib/utils"
 function Card({
   className,
   size = "default",
+  interactive = false,
   ...props
-}: React.ComponentProps<"div"> & { size?: "default" | "sm" }) {
+}: React.ComponentProps<"div"> & { size?: "default" | "sm"; interactive?: boolean }) {
   return (
     <div
       data-slot="card"
       data-size={size}
       className={cn(
-        "group/card flex flex-col gap-(--card-spacing) overflow-hidden rounded-xl border border-border/60 bg-card py-(--card-spacing) text-sm text-card-foreground shadow-[0_1px_2px_-1px_rgba(33,20,10,0.06),0_2px_8px_-2px_rgba(33,20,10,0.06)] transition-shadow [--card-spacing:--spacing(4)] has-data-[slot=card-footer]:pb-0 has-[>img:first-child]:pt-0 data-[size=sm]:[--card-spacing:--spacing(3)] data-[size=sm]:has-data-[slot=card-footer]:pb-0 *:[img:first-child]:rounded-t-xl *:[img:last-child]:rounded-b-xl",
+        "group/card flex flex-col gap-(--card-spacing) overflow-hidden rounded-2xl border border-border/50 bg-card py-(--card-spacing) text-sm text-card-foreground shadow-[var(--shadow-soft)] transition-all duration-200 [--card-spacing:--spacing(4)] has-data-[slot=card-footer]:pb-0 has-[>img:first-child]:pt-0 data-[size=sm]:[--card-spacing:--spacing(3)] data-[size=sm]:has-data-[slot=card-footer]:pb-0 *:[img:first-child]:rounded-t-2xl *:[img:last-child]:rounded-b-2xl",
+        interactive &&
+          "motion-safe:hover:-translate-y-0.5 hover:shadow-[var(--shadow-elevated)] hover:border-border",
         className
       )}
       {...props}