style(frontend): redesign UI with dark tech aesthetic

Complete visual overhaul with cyberpunk-inspired dark theme:
- New color palette: teal primary (#14b8a6), zinc grays
- Glass panel effects with backdrop blur
- Grid pattern backgrounds
- Glow effects on interactive elements

Component updates:
- LoginPage: Terminal-style login with animated effects
- DashboardPage: Collapsible sidebar with active indicators
- DataTable: Glass panel styling with hover states
- RepositoryManager: Tech-styled search and pagination
- WebhookToggleButton: Glow effect on enable action

CSS additions:
- Inter + JetBrains Mono fonts
- Custom utilities: glass-panel, tech-glow, bg-grid-pattern
- Updated CSS variables for dark mode

frontend/src/components/DataTable.tsx

@@ -32,14 +32,14 @@ export function DataTable<TData, TValue>({
   })
 
   return (
-    <div className="rounded-md border">
+    <div className="rounded-xl border border-border/50 overflow-hidden glass-panel">
       <Table>
-        <TableHeader>
+        <TableHeader className="bg-zinc-900 text-zinc-400 uppercase tracking-wider font-mono text-xs">
           {table.getHeaderGroups().map((headerGroup) => (
             <TableRow key={headerGroup.id}>
               {headerGroup.headers.map((header) => {
                 return (
-                  <TableHead key={header.id}>
+                  <TableHead key={header.id} className="font-mono text-zinc-400">
                     {header.isPlaceholder
                       ? null
                       : flexRender(
@@ -58,6 +58,7 @@ export function DataTable<TData, TValue>({
               <TableRow
                 key={row.id}
                 data-state={row.getIsSelected() && "selected"}
+                className="hover:bg-zinc-900/50 transition-colors border-border/50"
               >
                 {row.getVisibleCells().map((cell) => (
                   <TableCell key={cell.id}>
@@ -68,8 +69,13 @@ export function DataTable<TData, TValue>({
             ))
           ) : (
             <TableRow>
-              <TableCell colSpan={columns.length} className="h-24 text-center">
-                No results.
+              <TableCell colSpan={columns.length} className="h-48 text-center text-zinc-500 font-mono">
+                <div className="flex flex-col items-center justify-center space-y-3">
+                  <div className="p-3 rounded-full bg-zinc-900 border border-white/5 text-zinc-600">
+                    <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" className="lucide lucide-database"><ellipse cx="12" cy="5" rx="9" ry="3"/><path d="M3 5V19A9 3 0 0 0 21 19V5"/><path d="M3 12A9 3 0 0 0 21 12"/></svg>
+                  </div>
+                  <p>未找到匹配的仓库</p>
+                </div>
               </TableCell>
             </TableRow>
           )}

frontend/src/components/RepositoryManager.tsx

@@ -13,21 +13,21 @@ import { Table, TableBody, TableCell, TableHead, TableHeader, TableRow } from "@
 
 function DataTableSkeleton() {
   return (
-    <div className="rounded-md border">
+    <div className="rounded-xl border border-border/50 overflow-hidden glass-panel">
       <Table>
-        <TableHeader>
-          <TableRow>
-            <TableHead className="w-[40%]"><Skeleton className="h-5 w-24" /></TableHead>
-            <TableHead className="w-[30%]"><Skeleton className="h-5 w-24" /></TableHead>
-            <TableHead className="w-[30%] text-right"><Skeleton className="h-5 w-16 ml-auto" /></TableHead>
+        <TableHeader className="bg-zinc-900 border-b border-border/50">
+          <TableRow className="border-border/50">
+            <TableHead className="w-[40%]"><Skeleton className="h-5 w-24 bg-zinc-800" /></TableHead>
+            <TableHead className="w-[30%]"><Skeleton className="h-5 w-24 bg-zinc-800" /></TableHead>
+            <TableHead className="w-[30%] text-right"><Skeleton className="h-5 w-16 ml-auto bg-zinc-800" /></TableHead>
           </TableRow>
         </TableHeader>
         <TableBody>
           {Array.from({ length: 10 }).map((_, i) => (
-            <TableRow key={i}>
-              <TableCell><Skeleton className="h-5 w-3/4" /></TableCell>
-              <TableCell><Skeleton className="h-6 w-20" /></TableCell>
-              <TableCell className="text-right"><Skeleton className="h-8 w-16 ml-auto" /></TableCell>
+            <TableRow key={i} className="border-border/50">
+              <TableCell><Skeleton className="h-5 w-3/4 bg-zinc-800/80" /></TableCell>
+              <TableCell><Skeleton className="h-6 w-20 bg-zinc-800/80 rounded-full" /></TableCell>
+              <TableCell className="text-right"><Skeleton className="h-8 w-16 ml-auto bg-zinc-800/80" /></TableCell>
             </TableRow>
           ))}
         </TableBody>
@@ -61,16 +61,15 @@ export function RepositoryManager() {
 
   return (
     <div>
-      <div className="flex items-center justify-between mb-4">
-        <h1 className="font-semibold text-lg md:text-2xl">仓库 Webhook 管理</h1>
-        <div className="relative">
-            <Search className="absolute left-2.5 top-2.5 h-4 w-4 text-muted-foreground" />
+      <div className="flex justify-end mb-6">
+        <div className="relative w-full md:w-auto">
+            <Search className="absolute left-3 top-2.5 h-4 w-4 text-zinc-500" />
             <Input
                 type="search"
                 placeholder="搜索仓库..."
                 value={searchTerm}
                 onChange={(e) => setSearchTerm(e.target.value)}
-                className="pl-8 sm:w-[300px] md:w-[200px] lg:w-[300px]"
+                className="pl-9 w-full sm:w-[300px] md:w-[250px] lg:w-[300px] bg-zinc-900/50 border-border/50 text-zinc-200 placeholder:text-zinc-600 focus-visible:ring-1 focus-visible:ring-primary/50 focus-visible:border-primary transition-all font-mono text-sm"
             />
         </div>
       </div>
@@ -78,20 +77,27 @@ export function RepositoryManager() {
       {isLoading ? (
         <DataTableSkeleton />
       ) : isError ? (
-        <div className="p-4">
-          {/* The original Alert component was removed, so this will now just show the error message */}
-          <p className="text-red-500">加载仓库列表失败: {error.message}</p>
+        <div className="p-6 rounded-xl border border-rose-500/20 bg-rose-500/5 glass-panel">
+          <div className="flex items-start gap-3">
+            <div className="p-2 bg-rose-500/10 rounded-lg text-rose-500">
+              <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><circle cx="12" cy="12" r="10"/><line x1="12" y1="8" x2="12" y2="12"/><line x1="12" y1="16" x2="12.01" y2="16"/></svg>
+            </div>
+            <div className="space-y-1">
+              <h3 className="font-mono text-sm font-medium text-rose-500">System Error_</h3>
+              <p className="font-mono text-xs text-rose-400/80">加载仓库列表失败: {error.message}</p>
+            </div>
+          </div>
         </div>
       ) : (
         <>
           <DataTable columns={columns} data={repos} />
           {totalPages > 1 && (
-            <div className="flex items-center justify-between w-full mt-4 space-x-4">
-              <div className="text-sm text-muted-foreground flex-shrink-0">
-                第 {page} 页 / 共 {totalPages} 页 (共 {totalCount} 个仓库)
+            <div className="flex flex-col sm:flex-row items-center justify-between w-full mt-6 gap-4">
+              <div className="font-mono text-xs text-zinc-400 flex-shrink-0 bg-zinc-900/50 px-3 py-1.5 rounded-md border border-white/5">
+                第 <span className="text-zinc-200">{page}</span> 页 / 共 <span className="text-zinc-200">{totalPages}</span> 页 <span className="text-zinc-600 mx-1">|</span> 共 <span className="text-zinc-200">{totalCount}</span> 个仓库
               </div>
-              <Pagination className="flex-shrink-0 justify-end w-auto">
-                <PaginationContent>
+              <Pagination className="flex-shrink-0 w-auto mx-0">
+                <PaginationContent className="gap-2">
                   <PaginationItem>
                     <PaginationPrevious
                       href="#"
@@ -99,7 +105,7 @@ export function RepositoryManager() {
                         e.preventDefault();
                         setPage(p => Math.max(1, p - 1));
                       }}
-                      className={page <= 1 ? "pointer-events-none opacity-50" : ""}
+                      className={`border border-border/50 hover:bg-zinc-800 hover:text-primary hover:border-primary/50 font-mono text-xs transition-colors ${page <= 1 ? "pointer-events-none opacity-30 bg-zinc-900/30" : "bg-zinc-900 text-zinc-400"}`}
                     />
                   </PaginationItem>
                   <PaginationItem>
@@ -109,7 +115,7 @@ export function RepositoryManager() {
                         e.preventDefault();
                         setPage(p => Math.min(totalPages, p + 1));
                       }}
-                      className={page >= totalPages ? "pointer-events-none opacity-50" : ""}
+                      className={`border border-border/50 hover:bg-zinc-800 hover:text-primary hover:border-primary/50 font-mono text-xs transition-colors ${page >= totalPages ? "pointer-events-none opacity-30 bg-zinc-900/30" : "bg-zinc-900 text-zinc-400"}`}
                     />
                   </PaginationItem>
                 </PaginationContent>

frontend/src/components/RepositoryTableColumns.tsx

@@ -2,14 +2,13 @@
 
 import type { ColumnDef } from "@tanstack/react-table"
 import type { Repository } from "@/services/repositoryService"
-import { Badge } from "@/components/ui/badge"
 import { WebhookToggleButton } from "@/components/WebhookToggleButton"
 
 export const columns: ColumnDef<Repository>[] = [
   {
     accessorKey: "name",
     header: "仓库名称",
-    cell: ({ row }) => <div className="font-medium">{row.getValue("name")}</div>,
+    cell: ({ row }) => <div className="font-medium text-zinc-100 text-sm">{row.getValue("name")}</div>,
   },
   {
     accessorKey: "webhook_status",
@@ -18,15 +17,16 @@ export const columns: ColumnDef<Repository>[] = [
       const status = row.getValue("webhook_status") as Repository["webhook_status"]
       const isActive = status === 'active'
       return (
-        <Badge variant={isActive ? "default" : "outline"}>
+        <div className={`inline-flex items-center gap-1.5 px-2.5 py-0.5 rounded-full text-xs font-semibold border ${isActive ? 'bg-emerald-500/10 text-emerald-400 border-emerald-500/20' : 'bg-transparent text-zinc-500 border-zinc-700'}`}>
+          {isActive && <span className="w-1.5 h-1.5 rounded-full bg-emerald-400 animate-pulse" style={{ boxShadow: '0 0 8px 1px rgba(52, 211, 153, 0.6)' }}></span>}
           {isActive ? '已启用' : '未启用'}
-        </Badge>
+        </div>
       )
     },
   },
   {
     id: "actions",
-    header: () => <div className="text-right">操作</div>,
+    header: () => <div className="text-right text-zinc-400">操作</div>,
     cell: ({ row }) => {
       const repo = row.original
       return (

frontend/src/components/WebhookToggleButton.tsx

@@ -1,5 +1,6 @@
 import { useMutation, useQueryClient } from '@tanstack/react-query';
 import api from '@/lib/api';
+import { Loader2 } from 'lucide-react';
 import { Button } from '@/components/ui/button';
 import { toast } from "sonner";
 
@@ -32,14 +33,26 @@ export function WebhookToggleButton({ repoName, status, hookId }: WebhookToggleB
 
   return (
     <Button
-      variant={status === 'active' ? 'destructive' : 'default'}
+      variant={status === 'active' ? 'outline' : 'default'}
       size="sm"
+      className={
+        status === 'active'
+          ? "border-rose-500/50 bg-transparent text-rose-500 hover:bg-rose-500/10 hover:text-rose-400 transition-colors"
+          : "bg-primary text-primary-foreground hover:bg-primary/90 transition-all duration-300 hover:shadow-[0_0_15px_rgba(45,212,191,0.5)] tech-glow"
+      }
       onClick={() => mutation.mutate()}
       disabled={mutation.isPending}
     >
-      {mutation.isPending
-        ? '处理中...'
-        : status === 'active' ? '停用' : '启用'}
+      {mutation.isPending ? (
+        <>
+          <Loader2 className="mr-2 h-3 w-3 animate-spin" />
+          <span className="font-mono text-xs">处理中...</span>
+        </>
+      ) : status === 'active' ? (
+        <span className="font-mono text-xs">停用</span>
+      ) : (
+        <span className="font-mono text-xs">启用</span>
+      )}
     </Button>
   );
 }

frontend/src/index.css

@@ -1,51 +1,53 @@
+@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');
+
 @tailwind base;
 @tailwind components;
 @tailwind utilities;
 
 @layer base {
   :root {
-    --background: 0 0% 100%;
+    --background: 240 10% 98%;
     --foreground: 240 10% 3.9%;
     --card: 0 0% 100%;
     --card-foreground: 240 10% 3.9%;
     --popover: 0 0% 100%;
     --popover-foreground: 240 10% 3.9%;
-    --primary: 240 5.9% 10%;
-    --primary-foreground: 0 0% 98%;
+    --primary: 180 100% 35%;
+    --primary-foreground: 0 0% 100%;
     --secondary: 240 4.8% 95.9%;
     --secondary-foreground: 240 5.9% 10%;
     --muted: 240 4.8% 95.9%;
     --muted-foreground: 240 3.8% 46.1%;
-    --accent: 240 4.8% 95.9%;
-    --accent-foreground: 240 5.9% 10%;
+    --accent: 180 100% 35%;
+    --accent-foreground: 0 0% 100%;
     --destructive: 0 84.2% 60.2%;
     --destructive-foreground: 0 0% 98%;
     --border: 240 5.9% 90%;
     --input: 240 5.9% 90%;
-    --ring: 240 10% 3.9%;
+    --ring: 180 100% 35%;
     --radius: 0.5rem;
   }
 
   .dark {
-    --background: 240 10% 3.9%;
+    --background: 240 10% 4%;
     --foreground: 0 0% 98%;
-    --card: 240 10% 3.9%;
+    --card: 240 10% 6%;
     --card-foreground: 0 0% 98%;
-    --popover: 240 10% 3.9%;
+    --popover: 240 10% 6%;
     --popover-foreground: 0 0% 98%;
-    --primary: 0 0% 98%;
-    --primary-foreground: 240 5.9% 10%;
-    --secondary: 240 3.7% 15.9%;
+    --primary: 175 90% 45%;
+    --primary-foreground: 240 10% 4%;
+    --secondary: 240 5% 15%;
     --secondary-foreground: 0 0% 98%;
-    --muted: 240 3.7% 15.9%;
-    --muted-foreground: 240 5% 64.9%;
-    --accent: 240 3.7% 15.9%;
-    --accent-foreground: 0 0% 98%;
+    --muted: 240 5% 15%;
+    --muted-foreground: 240 5% 65%;
+    --accent: 175 90% 45%;
+    --accent-foreground: 240 10% 4%;
     --destructive: 0 62.8% 30.6%;
     --destructive-foreground: 0 0% 98%;
-    --border: 240 3.7% 15.9%;
-    --input: 240 3.7% 15.9%;
-    --ring: 240 4.9% 83.9%;
+    --border: 240 5% 15%;
+    --input: 240 5% 15%;
+    --ring: 175 90% 45%;
   }
 }
 
@@ -54,6 +56,32 @@
     @apply border-border;
   }
   body {
-    @apply bg-background text-foreground;
+    @apply bg-background text-foreground font-sans antialiased selection:bg-primary/30 selection:text-primary;
+  }
+  h1, h2, h3, h4, h5, h6 {
+    @apply tracking-tight;
+  }
+  code, pre, .font-mono {
+    font-family: 'JetBrains Mono', monospace;
+  }
+}
+
+@layer utilities {
+  .font-sans {
+    font-family: 'Inter', sans-serif;
+  }
+  .bg-grid-pattern {
+    background-size: 40px 40px;
+    background-image: linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
+                      linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
+  }
+  .glass-panel {
+    @apply bg-zinc-950/50 backdrop-blur-xl border border-white/10 shadow-2xl;
+  }
+  .tech-glow {
+    box-shadow: 0 0 20px -5px hsl(var(--primary) / 0.5);
+  }
+  .tech-glow:hover {
+    box-shadow: 0 0 30px -5px hsl(var(--primary) / 0.7);
   }
 }

frontend/src/pages/LoginPage.tsx

@@ -2,8 +2,7 @@ import { useState } from 'react';
 import api from '@/lib/api';
 import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
-import { Label } from "@/components/ui/label";
-import { Bot } from 'lucide-react';
+import { Bot, Terminal, ShieldCheck, ArrowRight, Activity } from 'lucide-react';
 
 export function LoginPage() {
   const [password, setPassword] = useState('');
@@ -30,37 +29,87 @@ export function LoginPage() {
   };
 
   return (
-    <div className="w-full lg:grid lg:min-h-screen lg:grid-cols-2">
-      <div className="hidden bg-gray-900 lg:flex items-center justify-center">
-        <div className="text-center">
-            <Bot className="h-24 w-24 text-gray-500 mx-auto mb-6" />
-            <h1 className="text-4xl font-bold text-white">Gitea AI Assistant</h1>
-            <p className="mt-4 text-gray-400">智能代码审查，自动化您的工作流</p>
-        </div>
-      </div>
-      <div className="flex items-center justify-center py-12 min-h-screen">
-        <div className="mx-auto grid w-[350px] gap-6">
-          <div className="grid gap-2 text-center">
-            <h1 className="text-3xl font-bold">登录</h1>
-            <p className="text-balance text-muted-foreground">
-              请输入您的管理员密码以继续
-            </p>
+    <div className="relative flex min-h-screen w-full items-center justify-center overflow-hidden bg-zinc-950">
+      {/* Background grid and gradient effects */}
+      <div className="absolute inset-0 bg-grid-pattern opacity-10"></div>
+      <div className="absolute top-[-20%] left-[-10%] h-[500px] w-[500px] rounded-full bg-primary/20 blur-[120px] pointer-events-none"></div>
+      <div className="absolute bottom-[-20%] right-[-10%] h-[500px] w-[500px] rounded-full bg-primary/10 blur-[100px] pointer-events-none"></div>
+
+      <div className="z-10 w-full max-w-md px-4 sm:px-6 relative">
+        <div className="glass-panel relative rounded-2xl p-8 sm:p-10 transition-all duration-500 hover:border-primary/20">
+          {/* Decorative terminal dots */}
+          <div className="absolute top-4 left-4 flex gap-2">
+            <div className="h-2.5 w-2.5 rounded-full bg-rose-500/80 shadow-[0_0_5px_rgba(244,63,94,0.5)]"></div>
+            <div className="h-2.5 w-2.5 rounded-full bg-amber-500/80 shadow-[0_0_5px_rgba(245,158,11,0.5)]"></div>
+            <div className="h-2.5 w-2.5 rounded-full bg-emerald-500/80 shadow-[0_0_5px_rgba(16,185,129,0.5)]"></div>
           </div>
-          <div className="grid gap-4">
-            <div className="grid gap-2">
-              <Label htmlFor="password">密码</Label>
-              <Input
-                id="password"
-                type="password"
-                value={password}
-                onChange={(e) => setPassword(e.target.value)}
-                onKeyDown={(e) => e.key === 'Enter' && !isLoading && handleLogin()}
-                required
-              />
+
+          <div className="mb-10 mt-6 flex flex-col items-center text-center">
+            <div className="mb-6 flex h-16 w-16 items-center justify-center rounded-2xl bg-zinc-900 border border-primary/20 shadow-[0_0_20px_rgba(var(--primary),0.15)] ring-1 ring-primary/10 relative group">
+              <div className="absolute inset-0 rounded-2xl bg-primary/20 blur-md opacity-0 group-hover:opacity-100 transition-opacity duration-500"></div>
+              <Bot className="h-8 w-8 text-primary relative z-10" />
             </div>
-            {error && <p className="text-sm text-red-500">{error}</p>}
-            <Button onClick={handleLogin} disabled={isLoading} className="w-full">
-              {isLoading ? '验证中...' : '登录'}
+            <h1 className="mb-2 text-2xl font-bold tracking-tight text-white sm:text-3xl">Gitea AI Assistant</h1>
+            <div className="flex items-center gap-2 text-xs font-mono text-primary/70 bg-primary/5 px-3 py-1 rounded-full border border-primary/10">
+              <span className="relative flex h-2 w-2">
+                <span className="animate-ping absolute inline-flex h-full w-full rounded-full bg-primary opacity-75"></span>
+                <span className="relative inline-flex rounded-full h-2 w-2 bg-primary"></span>
+              </span>
+              [SYSTEM] authentication_required
+            </div>
+          </div>
+
+          <div className="grid gap-5">
+            <div className="space-y-2">
+              <div className="flex items-center justify-between">
+                <label htmlFor="password" className="text-xs font-mono font-medium text-zinc-400 flex items-center gap-2">
+                  <span className="text-primary font-bold">&gt;</span> enter_admin_password
+                </label>
+              </div>
+              <div className="relative group">
+                <Input
+                  id="password"
+                  type="password"
+                  value={password}
+                  onChange={(e) => setPassword(e.target.value)}
+                  onKeyDown={(e) => e.key === 'Enter' && !isLoading && handleLogin()}
+                  required
+                  placeholder="••••••••"
+                  className="h-12 border-zinc-800 bg-zinc-900/50 font-mono text-zinc-100 placeholder:text-zinc-700 focus-visible:border-primary/50 focus-visible:ring-primary/20 transition-all duration-300"
+                />
+                <Terminal className="absolute right-3 top-1/2 h-4 w-4 -translate-y-1/2 text-zinc-600 transition-colors group-focus-within:text-primary/70" />
+              </div>
+            </div>
+
+            {error && (
+              <div className="flex items-start gap-2 rounded-lg border border-rose-500/20 bg-rose-500/10 px-3 py-3 text-sm text-rose-400 animate-in fade-in slide-in-from-top-1">
+                <Activity className="h-4 w-4 mt-0.5 shrink-0" />
+                <p className="font-mono text-xs leading-relaxed">{error}</p>
+              </div>
+            )}
+
+            <Button
+              onClick={handleLogin}
+              disabled={isLoading}
+              className="tech-glow group relative mt-4 h-12 w-full overflow-hidden bg-primary text-primary-foreground transition-all hover:bg-primary/90 disabled:opacity-70 disabled:pointer-events-none"
+            >
+              <div className="absolute inset-0 flex h-full w-full justify-center [transform:skew(-12deg)_translateX(-150%)] group-hover:duration-1000 group-hover:[transform:skew(-12deg)_translateX(150%)]">
+                <div className="relative h-full w-12 bg-white/20"></div>
+              </div>
+              <span className="relative flex items-center gap-2 font-mono font-semibold tracking-wide">
+                {isLoading ? (
+                  <>
+                    <div className="h-4 w-4 animate-spin rounded-full border-2 border-primary-foreground/30 border-t-primary-foreground"></div>
+                    VERIFYING...
+                  </>
+                ) : (
+                  <>
+                    <ShieldCheck className="h-4 w-4" />
+                    AUTHORIZE
+                    <ArrowRight className="h-4 w-4 opacity-70 transition-transform duration-300 group-hover:translate-x-1 group-hover:opacity-100" />
+                  </>
+                )}
+              </span>
             </Button>
           </div>
         </div>