Merge feature/ambient-dashboard-background into main

Global ambient background with drifting gradient orbs, glassmorphism
cards, lightened color palette, live dashboard clock, calendar UI fixes,
and Upcoming widget polish. QA reviewed — 0 critical, all suggestions
addressed.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/components/calendar/CalendarPage.tsx

@@ -495,7 +495,7 @@ export default function CalendarPage() {
 
       <div ref={calendarContainerRef} className="flex-1 flex flex-col overflow-hidden">
         {/* Custom toolbar */}
-        <div className="border-b bg-card px-4 md:px-6 min-h-[4rem] flex items-center gap-2 md:gap-4 flex-wrap py-2 md:py-0 md:h-16 md:flex-nowrap shrink-0">
+        <div className="border-b bg-card/95 backdrop-blur-md px-4 md:px-6 min-h-[4rem] flex items-center gap-2 md:gap-4 flex-wrap py-2 md:py-0 md:h-16 md:flex-nowrap shrink-0">
           <Button variant="ghost" size="icon" className="h-8 w-8 lg:hidden" onClick={() => setMobileSidebarOpen(true)}>
             <PanelLeft className="h-4 w-4" />
           </Button>
@@ -511,15 +511,17 @@ export default function CalendarPage() {
             Today
           </Button>
 
+          <div className="md:hidden">
             <Select
               value={currentView}
               onChange={(e) => changeView(e.target.value as CalendarView)}
-            className="h-8 text-sm w-auto pr-8 md:hidden"
+              className="h-8 text-sm w-auto pr-8"
             >
               {(Object.entries(viewLabels) as [CalendarView, string][]).map(([view, label]) => (
                 <option key={view} value={view}>{label}</option>
               ))}
             </Select>
+          </div>
 
           <div className="hidden md:flex items-center rounded-md border border-border overflow-hidden">
             {(Object.entries(viewLabels) as [CalendarView, string][]).map(([view, label]) => (

frontend/src/components/dashboard/CalendarWidget.tsx

@@ -50,8 +50,10 @@ export default function CalendarWidget({ events }: CalendarWidgetProps) {
     return () => clearInterval(interval);
   }, []);
 
+  const hasCurrentEvent = events.some((e) => getEventTimeState(e, clientNow) === 'current');
+
   return (
-    <Card className="hover:shadow-lg hover:shadow-accent/5 hover:border-accent/20 transition-all duration-200">
+    <Card className={cn('hover:shadow-lg hover:shadow-accent/5 hover:border-accent/20 transition-all duration-200', hasCurrentEvent && 'animate-card-breathe')}>
       <CardHeader>
         <CardTitle className="flex items-center gap-2">
           <div className="p-1.5 rounded-md bg-purple-500/10">

frontend/src/components/dashboard/DashboardPage.tsx

@@ -1,7 +1,7 @@
 import { useState, useEffect, useRef, useCallback } from 'react';
 import { useNavigate } from 'react-router-dom';
 import { useQuery, useQueryClient } from '@tanstack/react-query';
-import { format, formatDistanceToNow } from 'date-fns';
+import { format } from 'date-fns';
 import { Bell, Plus, Calendar as CalIcon, ListTodo, RefreshCw } from 'lucide-react';
 import api from '@/lib/api';
 import type { DashboardData, UpcomingResponse, WeatherData } from '@/types';
@@ -42,6 +42,38 @@ export default function DashboardPage() {
   const [quickAddType, setQuickAddType] = useState<'event' | 'todo' | 'reminder' | null>(null);
   const [dropdownOpen, setDropdownOpen] = useState(false);
   const dropdownRef = useRef<HTMLDivElement>(null);
+  const [clockNow, setClockNow] = useState(() => new Date());
+
+  // Live clock — synced to the minute boundary, re-syncs after tab sleep/resume
+  useEffect(() => {
+    let intervalId: ReturnType<typeof setInterval>;
+    let timeoutId: ReturnType<typeof setTimeout>;
+
+    function startClock() {
+      clearTimeout(timeoutId);
+      clearInterval(intervalId);
+      setClockNow(new Date());
+      const msUntilNextMinute = (60 - new Date().getSeconds()) * 1000 - new Date().getMilliseconds();
+      timeoutId = setTimeout(() => {
+        setClockNow(new Date());
+        intervalId = setInterval(() => setClockNow(new Date()), 60_000);
+      }, msUntilNextMinute);
+    }
+
+    startClock();
+
+    // Re-sync when tab becomes visible again (after sleep/background throttle)
+    function handleVisibility() {
+      if (document.visibilityState === 'visible') startClock();
+    }
+    document.addEventListener('visibilitychange', handleVisibility);
+
+    return () => {
+      clearTimeout(timeoutId);
+      clearInterval(intervalId);
+      document.removeEventListener('visibilitychange', handleVisibility);
+    };
+  }, []);
 
   // Click outside to close dropdown
   useEffect(() => {
@@ -160,7 +192,12 @@ export default function DashboardPage() {
   }
 
   const updatedAgo = dataUpdatedAt
-    ? formatDistanceToNow(new Date(dataUpdatedAt), { addSuffix: true })
+    ? (() => {
+        const mins = Math.floor((clockNow.getTime() - dataUpdatedAt) / 60_000);
+        if (mins < 1) return 'just now';
+        if (mins === 1) return '1 min ago';
+        return `${mins} min ago`;
+      })()
     : null;
 
   return (
@@ -173,7 +210,9 @@ export default function DashboardPage() {
           </h1>
           <div className="flex items-center gap-2 mt-1">
             <p className="text-muted-foreground text-sm">
-              {format(new Date(), 'EEEE, MMMM d, yyyy')}
+              <span className="tabular-nums">{format(clockNow, 'h:mm a')}</span>
+              <span className="mx-1.5 text-muted-foreground/30">|</span>
+              {format(clockNow, 'EEEE, MMMM d, yyyy')}
             </p>
             {updatedAgo && (
               <>

frontend/src/components/dashboard/TodoWidget.tsx

@@ -48,8 +48,10 @@ export default function TodoWidget({ todos }: TodoWidgetProps) {
     onError: () => toast.error('Failed to complete todo'),
   });
 
+  const hasOverdue = todos.some((t) => isPast(endOfDay(new Date(t.due_date))));
+
   return (
-    <Card className="h-full hover:shadow-lg hover:shadow-accent/5 hover:border-accent/20 transition-all duration-200">
+    <Card className={cn('h-full hover:shadow-lg hover:shadow-accent/5 hover:border-accent/20 transition-all duration-200', hasOverdue && 'animate-card-breathe')}>
       <CardHeader>
         <CardTitle className="flex items-center gap-2">
           <div className="p-1.5 rounded-md bg-blue-500/10">

frontend/src/components/dashboard/UpcomingWidget.tsx

@@ -30,6 +30,8 @@ const typeConfig: Record<string, { hoverGlow: string; pillBg: string; pillText:
   reminder: { hoverGlow: 'hover:bg-orange-500/[0.08]', pillBg: 'bg-orange-500/15', pillText: 'text-orange-400', label: 'REMINDER' },
 };
 
+// Snooze "Tomorrow" targets 9 AM — a reasonable default morning time.
+// Could be made configurable via user settings in the future.
 function getMinutesUntilTomorrowMorning(): number {
   const now = new Date();
   const tomorrow = new Date(now.getFullYear(), now.getMonth(), now.getDate() + 1, 9, 0, 0);
@@ -251,26 +253,26 @@ export default function UpcomingWidget({ items }: UpcomingWidgetProps) {
                     <button
                       onClick={() => toggleDay(dateKey)}
                       className={cn(
-                        'sticky top-0 bg-card z-10 w-full flex items-center gap-1.5 pb-1.5 border-b border-border cursor-pointer select-none',
-                        groupIdx === 0 ? 'pt-0' : 'pt-3'
+                        'sticky top-0 z-10 w-full flex items-center gap-1.5 py-0.5 border-b border-border cursor-pointer select-none leading-none',
+                        groupIdx === 0 ? 'pt-0' : 'mt-2'
                       )}
                     >
                       <ChevronRight
                         className={cn(
-                          'h-3 w-3 text-muted-foreground transition-transform duration-150',
+                          'h-2.5 w-2.5 text-muted-foreground/60 transition-transform duration-150 shrink-0',
                           !isCollapsed && 'rotate-90'
                         )}
                       />
                       <span
                         className={cn(
-                          'text-xs font-semibold uppercase tracking-wider',
-                          isTodayGroup ? 'text-accent' : 'text-muted-foreground'
+                          'text-[10px] font-semibold uppercase tracking-wider leading-none',
+                          isTodayGroup ? 'text-accent' : 'text-muted-foreground/70'
                         )}
                       >
                         {label}
                       </span>
                       {isCollapsed && (
-                        <span className="text-[10px] text-muted-foreground font-normal ml-auto mr-1">
+                        <span className="text-[9px] text-muted-foreground/50 font-normal ml-auto mr-1 leading-none">
                           {dayItems.length} {dayItems.length === 1 ? 'item' : 'items'}
                         </span>
                       )}

frontend/src/components/layout/AppAmbientBackground.tsx

@@ -0,0 +1,52 @@
+/**
+ * Global ambient background effect.
+ *
+ * Uses CSS radial gradients with animated position shifting to create
+ * a living, breathing atmosphere behind all page content.
+ * The accent color is read from CSS custom properties so it adapts to any theme.
+ *
+ * Also renders a noise texture for tactile depth and a radial vignette
+ * to darken edges and draw focus to center content.
+ */
+
+const NOISE_SVG = `url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")`;
+
+export default function AppAmbientBackground() {
+  return (
+    <div className="pointer-events-none absolute inset-0 z-0 overflow-hidden" aria-hidden="true">
+      {/* Animated gradient orbs — oversized so drift never clips at visible edges */}
+      <div
+        className="absolute animate-drift-1"
+        style={{
+          inset: '-100px',
+          willChange: 'transform',
+          background: 'radial-gradient(ellipse 90% 70% at 30% 20%, hsl(var(--accent-color) / 0.45) 0%, transparent 60%)',
+        }}
+      />
+      <div
+        className="absolute animate-drift-2"
+        style={{
+          inset: '-100px',
+          willChange: 'transform',
+          background: 'radial-gradient(ellipse 80% 60% at 75% 75%, hsl(var(--accent-color) / 0.35) 0%, transparent 60%)',
+        }}
+      />
+      {/* Noise texture */}
+      <div
+        className="absolute inset-0 opacity-[0.035]"
+        style={{
+          backgroundImage: NOISE_SVG,
+          backgroundRepeat: 'repeat',
+          backgroundSize: '256px 256px',
+        }}
+      />
+      {/* Radial vignette */}
+      <div
+        className="absolute inset-0"
+        style={{
+          background: 'radial-gradient(ellipse at center, transparent 50%, rgba(0, 0, 0, 0.30) 100%)',
+        }}
+      />
+    </div>
+  );
+}

frontend/src/components/layout/AppLayout.tsx

@@ -7,6 +7,7 @@ import { LockProvider } from '@/hooks/useLock';
 import { NotificationProvider } from '@/hooks/useNotifications';
 import { Button } from '@/components/ui/button';
 import Sidebar from './Sidebar';
+import AppAmbientBackground from './AppAmbientBackground';
 import LockOverlay from './LockOverlay';
 import NotificationToaster from '@/components/notifications/NotificationToaster';
 
@@ -33,15 +34,16 @@ export default function AppLayout() {
               mobileOpen={mobileOpen}
               onMobileClose={() => setMobileOpen(false)}
             />
-            <div className="flex-1 flex flex-col overflow-hidden">
+            <div className="flex-1 flex flex-col overflow-hidden relative ambient-glass">
+              <AppAmbientBackground />
               {/* Mobile header */}
-              <div className="flex md:hidden items-center h-14 border-b bg-card px-4">
+              <div className="relative z-10 flex md:hidden items-center h-14 border-b bg-card px-4">
                 <Button variant="ghost" size="icon" onClick={() => setMobileOpen(true)}>
                   <Menu className="h-5 w-5" />
                 </Button>
                 <h1 className="text-lg font-bold text-accent ml-3">UMBRA</h1>
               </div>
-              <main className="flex-1 overflow-y-auto mobile-scale">
+              <main className="relative z-10 flex-1 overflow-y-auto mobile-scale">
                 <Outlet />
               </main>
             </div>

frontend/src/components/ui/button.tsx

@@ -9,7 +9,7 @@ const buttonVariants = cva(
       variant: {
         default: 'bg-accent text-accent-foreground hover:bg-accent/90',
         destructive: 'bg-destructive text-destructive-foreground hover:bg-destructive/90',
-        outline: 'border border-input bg-background hover:bg-accent/10 hover:text-accent',
+        outline: 'border border-input bg-transparent hover:bg-accent/10 hover:text-accent',
         secondary: 'bg-secondary text-secondary-foreground hover:bg-secondary/80',
         ghost: 'hover:bg-accent/10 hover:text-accent',
         link: 'text-accent underline-offset-4 hover:underline',

frontend/src/index.css

@@ -6,10 +6,10 @@
   :root {
     --background: 0 0% 3.9%;
     --foreground: 0 0% 98%;
-    --card: 0 0% 5%;
+    --card: 0 0% 8%;
     --card-foreground: 0 0% 98%;
-    --card-elevated: 0 0% 7%;
-    --popover: 0 0% 5%;
+    --card-elevated: 0 0% 11%;
+    --popover: 0 0% 8%;
     --popover-foreground: 0 0% 98%;
     --primary: var(--accent-h) var(--accent-s) var(--accent-l);
     --primary-foreground: 0 0% 98%;
@@ -93,8 +93,8 @@
   --fc-event-bg-color: hsl(var(--accent-color));
   --fc-event-border-color: hsl(var(--accent-color));
   --fc-event-text-color: hsl(0 0% 98%);
-  --fc-page-bg-color: hsl(0 0% 3.9%);
-  --fc-neutral-bg-color: hsl(0 0% 5%);
+  --fc-page-bg-color: transparent;
+  --fc-neutral-bg-color: hsl(0 0% 8% / 0.65);
   --fc-neutral-text-color: hsl(0 0% 98%);
   --fc-list-event-hover-bg-color: hsl(0 0% 10%);
   --fc-today-bg-color: hsl(var(--accent-color) / 0.08);
@@ -144,7 +144,7 @@
 }
 
 .fc .fc-col-header-cell {
-  background-color: hsl(0 0% 5%);
+  background-color: hsl(0 0% 8% / 0.65);
   border-color: var(--fc-border-color);
 }
 
@@ -195,7 +195,9 @@
 
 /* ── FullCalendar "+more" popover fixes ── */
 .fc .fc-more-popover {
-  background-color: hsl(0 0% 5%);
+  background-color: hsl(0 0% 8% / 0.85);
+  backdrop-filter: blur(12px);
+  -webkit-backdrop-filter: blur(12px);
   border-color: hsl(0 0% 14.9%);
   border-radius: 0.5rem;
   min-width: 220px;
@@ -203,7 +205,7 @@
 }
 
 .fc .fc-more-popover .fc-popover-header {
-  background-color: hsl(0 0% 7%);
+  background-color: hsl(0 0% 11% / 0.8);
   color: hsl(0 0% 98%);
   padding: 8px 12px;
   border-radius: 0.5rem 0.5rem 0 0;
@@ -455,6 +457,25 @@ form[data-submitted] input:invalid + button {
 .animate-slide-in-row { animation: slide-in-row 250ms ease-out both; }
 .animate-content-reveal { animation: content-reveal 400ms ease-out both; }
 
+/* ── Dashboard ambient layers ── */
+
+/* Glassmorphism — cards become semi-transparent to let ambient show through */
+.ambient-glass .bg-card {
+  background-color: hsl(0 0% 8% / 0.65) !important;
+  backdrop-filter: blur(12px);
+  -webkit-backdrop-filter: blur(12px);
+}
+
+/* Card breathing glow — data-aware "alive" pulse for urgent cards */
+@keyframes card-breathe {
+  0%, 100% { box-shadow: 0 0 0 0 hsl(var(--accent-color) / 0.05); }
+  50% { box-shadow: 0 0 16px 2px hsl(var(--accent-color) / 0.10); }
+}
+
+.animate-card-breathe {
+  animation: card-breathe 4s ease-in-out infinite;
+}
+
 /* Respect reduced motion preferences */
 @media (prefers-reduced-motion: reduce) {
   *, *::before, *::after {