feat(AIChatPanel): enhance daily brief with animation and expand/collapse functionality; add GradualBlur component for improved UI

src/renderer/components/ai/AIChatPanel.tsx

@@ -1,13 +1,14 @@
 import { useState, useEffect, useRef, useCallback, useMemo } from 'react';
-import { Sparkles, KeyRound, ArrowUp, ListTodo, TrendingUp, AlertCircle, Lightbulb } from 'lucide-react';
+import { Sparkles, KeyRound, ArrowUp, ListTodo, TrendingUp, AlertCircle, Lightbulb, ChevronDown, ChevronUp, X } from 'lucide-react';
 import ReactMarkdown from 'react-markdown';
 import remarkGfm from 'remark-gfm';
+import { motion, AnimatePresence } from 'framer-motion';
 import { trpc } from '@/lib/trpc';
 import { useAIChat, type ChatContext } from '@/hooks/useAIChat';
 import { Button } from '@/components/ui/button';
-import { Badge } from '@/components/ui/badge';
 import { Skeleton } from '@/components/ui/skeleton';
 import { ScrollArea } from '@/components/ui/scroll-area';
+import { GradualBlur } from '@/components/ui/gradual-blur';
 
 const SUGGESTION_CHIPS = [
   { icon: ListTodo, label: "What's on my plate today?" },
@@ -16,6 +17,28 @@ const SUGGESTION_CHIPS = [
   { icon: Lightbulb, label: 'Suggest next actions' },
 ] as const;
 
+function getTimeGreeting(): string {
+  const hour = new Date().getHours();
+  if (hour < 12) return 'Good morning,';
+  if (hour < 17) return 'Good afternoon,';
+  return 'Good evening,';
+}
+
+/* Entrance animation: staggered fade-up */
+const stagger = {
+  hidden: {},
+  show: { transition: { staggerChildren: 0.08 } },
+};
+
+const fadeUp = {
+  hidden: { opacity: 0, y: 16 },
+  show: {
+    opacity: 1,
+    y: 0,
+    transition: { duration: 0.45, ease: [0.25, 0.1, 0.25, 1] as const },
+  },
+};
+
 interface AIChatPanelProps {
   onOpenSettings?: () => void;
   isHomePage?: boolean;
@@ -50,6 +73,9 @@ export function AIChatPanel({
   const briefContentRef = useRef('');
   const hasFiredBrief = useRef(false);
 
+  const [briefExpanded, setBriefExpanded] = useState(false);
+  const [briefDismissed, setBriefDismissed] = useState(false);
+
   const messagesContainerRef = useRef<HTMLDivElement | null>(null);
 
   const briefMutation = trpc.ai.dailyBrief.useMutation();
@@ -118,37 +144,126 @@ export function AIChatPanel({
 
   return (
     <div className="absolute inset-0 z-0 flex flex-col bg-background">
+      {/* Sticky brief toast — anchored at top when chatting */}
+      <AnimatePresence>
+        {isHomePage && hasMessages && dailyBrief && !briefDismissed && (
+          <motion.div
+            initial={{ y: -80, opacity: 0 }}
+            animate={{ y: 0, opacity: 1 }}
+            exit={{ y: -80, opacity: 0 }}
+            transition={{ type: 'spring', stiffness: 400, damping: 30 }}
+            className="sticky top-0 z-30 flex justify-center px-4 pt-3 pb-1"
+          >
+            <div className="w-full max-w-2xl rounded-xl border border-border/60 bg-background/80 backdrop-blur-xl shadow-[0_8px_30px_rgba(0,0,0,0.12)] dark:shadow-[0_8px_30px_rgba(0,0,0,0.4)] ring-1 ring-border/10">
+              {/* Toast header — always visible */}
+              <div className="flex items-center gap-2 px-4 py-2.5">
+                <Sparkles size={14} className="text-primary shrink-0" />
+                <span className="text-xs font-semibold tracking-wide text-foreground">Daily Brief</span>
+                <div className="flex-1" />
+                <button
+                  onClick={() => setBriefExpanded((v) => !v)}
+                  className="flex h-6 w-6 items-center justify-center rounded-md text-muted-foreground transition-colors hover:text-foreground hover:bg-muted/60"
+                >
+                  {briefExpanded ? <ChevronUp size={14} /> : <ChevronDown size={14} />}
+                </button>
+                <button
+                  onClick={() => setBriefDismissed(true)}
+                  className="flex h-6 w-6 items-center justify-center rounded-md text-muted-foreground transition-colors hover:text-foreground hover:bg-muted/60"
+                >
+                  <X size={14} />
+                </button>
+              </div>
+              {/* Collapsed: one-line preview */}
+              {!briefExpanded && (
+                <div className="px-4 pb-3 -mt-1">
+                  <p className="text-xs text-muted-foreground truncate">
+                    {dailyBrief.replace(/[#*_~`>\-]/g, '').slice(0, 120)}...
+                  </p>
+                </div>
+              )}
+              {/* Expanded: full brief content */}
+              <AnimatePresence>
+                {briefExpanded && (
+                  <motion.div
+                    initial={{ height: 0, opacity: 0 }}
+                    animate={{ height: 'auto', opacity: 1 }}
+                    exit={{ height: 0, opacity: 0 }}
+                    transition={{ duration: 0.25, ease: [0.25, 0.1, 0.25, 1] }}
+                    className="overflow-hidden"
+                  >
+                    <div className="px-4 pb-3 max-h-64 overflow-y-auto">
+                      <ChatMarkdown content={dailyBrief} />
+                    </div>
+                  </motion.div>
+                )}
+              </AnimatePresence>
+            </div>
+          </motion.div>
+        )}
+      </AnimatePresence>
+
       {/* Scrollable messages area */}
-      <ScrollArea
-        className="flex-1 min-h-0"
-        viewportRef={messagesContainerRef}
-        viewportClassName={
-          isHomePage && !hasMessages
-            ? '[&>div]:!flex [&>div]:!flex-col [&>div]:!min-h-full [&>div]:!justify-center'
-            : '[&>div]:!flex [&>div]:!flex-col [&>div]:!min-h-full [&>div]:!justify-end'
-        }
-      >
+      <div className="relative flex-1 min-h-0">
+        {/* Gradual blur at the top of messages */}
+        {hasMessages && (
+          <GradualBlur
+            position="top"
+            strength={2}
+            height="5rem"
+            divCount={6}
+            zIndex={20}
+          />
+        )}
+        <ScrollArea
+          className="h-full"
+          viewportRef={messagesContainerRef}
+          viewportClassName={
+            isHomePage && !hasMessages
+              ? '[&>div]:!flex [&>div]:!flex-col [&>div]:!min-h-full [&>div]:!justify-center'
+              : '[&>div]:!flex [&>div]:!flex-col [&>div]:!min-h-full [&>div]:!justify-end'
+          }
+        >
         {/* Home page initial state: greeting + brief */}
         {isHomePage && !hasMessages && (
-          <div className="mx-auto w-full max-w-3xl px-6 pt-8 pb-8">
-            <div className="flex flex-col gap-8">
-              {/* Greeting + brief grouped closely */}
-              <div className="flex flex-col gap-1">
-                <div className="flex items-center justify-between gap-4 flex-wrap">
-                  <h1 className="text-[30px] font-semibold" style={{ letterSpacing: '-1px' }}>
-                    ✦ Hello, {userName}
-                  </h1>
-                  <Badge variant="secondary">
-                    {dueCount} Task{dueCount !== 1 ? 's' : ''} due
-                  </Badge>
-                </div>
+          <motion.div
+            className="mx-auto w-full max-w-4xl px-8 pt-14 pb-8"
+            variants={stagger}
+            initial="hidden"
+            animate="show"
+          >
+            <div className="flex flex-col" style={{ gap: 'clamp(2.5rem, 4vh, 4rem)' }}>
+              {/* Greeting — editorial hero moment */}
+              <motion.div variants={fadeUp} className="flex flex-col gap-1">
+                <span
+                  className="font-light tracking-wide text-muted-foreground"
+                  style={{ fontSize: 'clamp(1rem, 1.6vw, 1.25rem)' }}
+                >
+                  {getTimeGreeting()}
+                </span>
+                <h1
+                  className="font-bold leading-[1.05]"
+                  style={{ fontSize: 'clamp(3.25rem, 5.5vw, 5.5rem)', letterSpacing: '-0.035em' }}
+                >
+                  {userName}
+                  <span className="text-primary ml-3 inline-block">✦</span>
+                </h1>
+                {dueCount > 0 && (
+                  <p
+                    className="text-muted-foreground mt-2"
+                    style={{ fontSize: 'clamp(0.875rem, 1.2vw, 1.125rem)' }}
+                  >
+                    <span className="text-foreground font-medium">{dueCount}</span>
+                    {' '}task{dueCount !== 1 ? 's' : ''} due today
+                  </p>
+                )}
+              </motion.div>
 
-                {/* Daily brief */}
-                <div>
+              {/* Daily brief */}
+              <motion.div variants={fadeUp} className="max-w-3xl">
                 {hasTokenQuery.data === false ? (
-                  <div className="flex flex-col items-center gap-3 py-2">
-                    <KeyRound size={24} className="text-muted-foreground" />
-                    <p className="text-sm text-muted-foreground text-center">
+                  <div className="flex flex-col items-start gap-3 py-2">
+                    <KeyRound size={20} className="text-muted-foreground" />
+                    <p className="text-muted-foreground" style={{ fontSize: 'clamp(0.9375rem, 1.2vw, 1.0625rem)' }}>
                       Configure your AI provider in Settings to enable the daily brief.
                     </p>
                     <Button variant="outline" size="sm" onClick={onOpenSettings}>
@@ -156,23 +271,22 @@ export function AIChatPanel({
                     </Button>
                   </div>
                 ) : briefLoading && !dailyBrief ? (
-                  <div className="space-y-2">
-                    <Skeleton className="h-4 w-3/4" />
-                    <Skeleton className="h-4 w-1/2" />
-                    <Skeleton className="h-4 w-2/3" />
+                  <div className="space-y-3">
+                    <Skeleton className="h-5 w-3/4" />
+                    <Skeleton className="h-5 w-1/2" />
+                    <Skeleton className="h-5 w-2/3" />
                   </div>
                 ) : dailyBrief ? (
-                  <ChatMarkdown content={dailyBrief} />
+                  <ChatMarkdown content={dailyBrief} size="lg" />
                 ) : (
-                  <p className="text-sm text-muted-foreground">
+                  <p className="text-muted-foreground" style={{ fontSize: 'clamp(0.9375rem, 1.2vw, 1.0625rem)' }}>
                     Your daily brief will appear here.
                   </p>
                 )}
-                </div>
-              </div>
+              </motion.div>
 
-              {/* Inline input + suggestion chips */}
-              <div>
+              {/* Input + suggestion links */}
+              <motion.div variants={fadeUp} className="max-w-3xl">
                 <ChatInput
                   input={input}
                   isStreaming={isStreaming || briefLoading}
@@ -180,35 +294,32 @@ export function AIChatPanel({
                   onKeyDown={handleKeyDown}
                   onSend={handleSend}
                 />
-                <div className="flex flex-wrap items-center justify-center gap-2 mt-4">
+                <div className="flex flex-col gap-0.5 mt-5">
                   {SUGGESTION_CHIPS.map((chip) => (
                     <button
                       key={chip.label}
                       type="button"
-                      className="group flex items-center gap-2 rounded-full border border-border/50 bg-background/60 backdrop-blur-lg px-4 py-2 text-sm text-foreground shadow-sm ring-1 ring-border/20 transition-all hover:shadow-md hover:-translate-y-0.5 hover:border-ring/40 cursor-pointer"
+                      className="group flex items-center gap-3 py-1.5 text-muted-foreground transition-all duration-200 hover:text-foreground hover:translate-x-1 cursor-pointer text-left"
+                      style={{ fontSize: 'clamp(0.9375rem, 1.2vw, 1.0625rem)' }}
                       onClick={() => setInput(chip.label)}
                     >
-                      <chip.icon size={14} className="shrink-0 text-muted-foreground transition-colors group-hover:text-foreground" />
+                      <chip.icon
+                        size={16}
+                        className="shrink-0 transition-colors duration-200 group-hover:text-primary"
+                      />
                       <span>{chip.label}</span>
                     </button>
                   ))}
                 </div>
-              </div>
+              </motion.div>
             </div>
-          </div>
+          </motion.div>
         )}
 
         {/* Home page with messages: brief stays, then messages */}
         {isHomePage && hasMessages && (
-          <div className="mx-auto w-full max-w-3xl px-6 pt-8 pb-32">
+          <div className="mx-auto w-full max-w-6xl px-6 pt-8 pb-32">
             <div className="flex flex-col gap-4">
-              {/* Brief persists */}
-              {dailyBrief && (
-                <div className="mb-2">
-                  <ChatMarkdown content={dailyBrief} />
-                </div>
-              )}
-
               {/* Chat messages */}
               {messages.map((msg) => {
                 if (msg.role === 'user') {
@@ -268,7 +379,8 @@ export function AIChatPanel({
         )}
 
         {/* Non-home messages */}
-      </ScrollArea>
+        </ScrollArea>
+      </div>
 
       {/* Fixed input — pinned to the bottom (hidden on initial state) */}
       {hasMessages && (
@@ -332,9 +444,9 @@ function ChatInput({
 
 /* ---------- ChatMarkdown: lightweight markdown renderer ---------- */
 
-export function ChatMarkdown({ content }: { content: string }) {
+export function ChatMarkdown({ content, size = 'sm' }: { content: string; size?: 'sm' | 'lg' }) {
   return (
-    <div className="prose prose-sm dark:prose-invert max-w-none [&>*:first-child]:mt-0 [&>*:last-child]:mb-0">
+    <div className={`prose dark:prose-invert max-w-none [&>*:first-child]:mt-0 [&>*:last-child]:mb-0 ${size === 'lg' ? 'prose-base' : 'prose-sm'}`}>
       <ReactMarkdown
         remarkPlugins={[remarkGfm]}
         components={{

src/renderer/components/ui/gradual-blur.tsx

@@ -0,0 +1,101 @@
+import { useMemo } from 'react';
+
+type Position = 'top' | 'bottom';
+
+interface GradualBlurProps {
+  /** Edge to attach the blur overlay */
+  position?: Position;
+  /** Base blur strength multiplier */
+  strength?: number;
+  /** Overlay height (CSS value) */
+  height?: string;
+  /** Number of stacked blur layers (higher = smoother) */
+  divCount?: number;
+  /** Use exponential progression for stronger end blur */
+  exponential?: boolean;
+  /** Opacity applied to each blur layer */
+  opacity?: number;
+  /** z-index for the overlay */
+  zIndex?: number;
+  /** Additional class names */
+  className?: string;
+}
+
+const getGradientDirection = (position: Position) =>
+  position === 'top' ? 'to top' : 'to bottom';
+
+export function GradualBlur({
+  position = 'top',
+  strength = 2,
+  height = '6rem',
+  divCount = 5,
+  exponential = false,
+  opacity = 1,
+  zIndex = 10,
+  className = '',
+}: GradualBlurProps) {
+  const blurDivs = useMemo(() => {
+    const divs: React.ReactNode[] = [];
+    const increment = 100 / divCount;
+    const direction = getGradientDirection(position);
+
+    for (let i = 1; i <= divCount; i++) {
+      const progress = i / divCount;
+
+      let blurValue: number;
+      if (exponential) {
+        blurValue = Math.pow(2, progress * 4) * 0.0625 * strength;
+      } else {
+        blurValue = 0.0625 * (progress * divCount + 1) * strength;
+      }
+
+      const p1 = Math.round((increment * i - increment) * 10) / 10;
+      const p2 = Math.round(increment * i * 10) / 10;
+      const p3 = Math.round((increment * i + increment) * 10) / 10;
+      const p4 = Math.round((increment * i + increment * 2) * 10) / 10;
+
+      let gradient = `transparent ${p1}%, black ${p2}%`;
+      if (p3 <= 100) gradient += `, black ${p3}%`;
+      if (p4 <= 100) gradient += `, transparent ${p4}%`;
+
+      const maskImage = `linear-gradient(${direction}, ${gradient})`;
+
+      divs.push(
+        <div
+          key={i}
+          style={{
+            position: 'absolute',
+            inset: 0,
+            maskImage,
+            WebkitMaskImage: maskImage,
+            backdropFilter: `blur(${blurValue.toFixed(3)}rem)`,
+            WebkitBackdropFilter: `blur(${blurValue.toFixed(3)}rem)`,
+            opacity,
+          }}
+        />,
+      );
+    }
+
+    return divs;
+  }, [position, strength, divCount, exponential, opacity]);
+
+  return (
+    <div
+      className={className}
+      style={{
+        position: 'absolute',
+        [position]: 0,
+        left: 0,
+        right: 0,
+        height,
+        pointerEvents: 'none',
+        zIndex,
+        overflow: 'hidden',
+      }}
+    >
+      <div style={{ position: 'relative', width: '100%', height: '100%' }}>
+        {blurDivs}
+      </div>
+    </div>
+  );
+}