feat: UI redesign — polished layout, modal, nav, profile

- CSS: refined shadows with border ring, dark bg #0A0A0A, larger card
  radius (16/22px), modal-backdrop blur, scrollbar styling, new
  dropzone + profile-grid CSS classes
- Navbar: paw emoji logo, labels under icons, accent gradient bar,
  active-state ring on avatar
- Login / Register: auth card with decorative background blobs,
  form wrapped in card, cleaner spacing
- CatModal: two-column layout on desktop (photo left, info right),
  modal-backdrop blur, comment input with user avatar, like label
- ProfilePage: 88px avatar with camera overlay, inline stat bar with
  icons, grid section divider, Stat helper component
- CatCard: points badge in header (amber), caption text secondary
  color, ring on avatar
- FeedSidebar: color-coded rank badges, hover rows, star icon
- UploadPage: new dropzone-idle/dropzone-active CSS classes,
  filename chip on preview, UserAvatar in caption row, HEIC/AVIF in
  accepted formats hint, 500-char counter

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

client/src/pages/LoginPage.tsx

@@ -3,7 +3,6 @@ import { Link, Navigate } from 'react-router-dom';
 import { useAuth } from '@/hooks/useAuth';
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
-import { Cat } from 'lucide-react';
 
 export default function LoginPage() {
   const { user, login } = useAuth();
@@ -24,46 +23,73 @@ export default function LoginPage() {
   };
 
   return (
-    <div className="flex min-h-screen items-center justify-center p-5 bg-[var(--bg)]">
-      <div className="w-full max-w-[380px] animate-fade-up">
-        <div className="text-center mb-10">
-          <div className="mx-auto mb-5 h-14 w-14 rounded-2xl flex items-center justify-center bg-[var(--accent)] shadow-sm">
-            <Cat className="h-7 w-7 text-white" strokeWidth={1.5} />
+    <div className="relative flex min-h-screen items-center justify-center p-5 overflow-hidden bg-[var(--bg)]">
+      {/* Декоративные пятна */}
+      <div className="auth-bg-blob w-96 h-96 bg-[var(--accent)] -top-20 -left-20 absolute" />
+      <div className="auth-bg-blob w-72 h-72 bg-pink-300 bottom-10 right-5 absolute" />
+
+      <div className="relative w-full max-w-[380px] animate-fade-up">
+        {/* Логотип */}
+        <div className="text-center mb-8">
+          <div className="mx-auto mb-5 h-[72px] w-[72px] rounded-[22px] flex items-center justify-center bg-[var(--accent)] shadow-lg">
+            <span className="text-4xl select-none">🐾</span>
           </div>
-          <h1 className="text-2xl font-800 tracking-tight">Котограм</h1>
-          <p className="text-sm text-[var(--fg-tertiary)] mt-1">Войдите, чтобы смотреть котов</p>
+          <h1 className="text-2xl font-extrabold tracking-tight">Котограм</h1>
+          <p className="text-sm text-[var(--fg-tertiary)] mt-1.5">Войдите, чтобы смотреть котов</p>
         </div>
 
-        <form onSubmit={handleSubmit} className="space-y-3">
-          <Input value={username} onChange={e => setUsername(e.target.value)}
-            placeholder="Имя пользователя" required autoFocus
-            className="h-12 text-sm rounded-xl bg-[var(--surface)] border-[var(--border)] focus-ring" />
-          <Input type="password" value={password} onChange={e => setPassword(e.target.value)}
-            placeholder="Пароль" required
-            className="h-12 text-sm rounded-xl bg-[var(--surface)] border-[var(--border)] focus-ring" />
-
-          {error && (
-            <div className="flex items-center gap-2 px-4 py-3 rounded-xl bg-[var(--danger-light)] text-[var(--danger)] text-xs font-medium animate-fade-up">
-              {error}
+        {/* Форма */}
+        <div className="card p-6 space-y-3">
+          <form onSubmit={handleSubmit} className="space-y-3">
+            <div className="space-y-2">
+              <Input
+                value={username}
+                onChange={e => setUsername(e.target.value)}
+                placeholder="Имя пользователя"
+                required
+                autoFocus
+                autoComplete="username"
+                className="h-12 text-sm rounded-xl bg-[var(--bg)] border-[var(--border)] focus-ring"
+              />
+              <Input
+                type="password"
+                value={password}
+                onChange={e => setPassword(e.target.value)}
+                placeholder="Пароль"
+                required
+                autoComplete="current-password"
+                className="h-12 text-sm rounded-xl bg-[var(--bg)] border-[var(--border)] focus-ring"
+              />
             </div>
-          )}
 
-          <Button type="submit" disabled={loading}
-            className="w-full h-12 rounded-xl text-sm font-semibold bg-[var(--accent)] hover:bg-[var(--accent-hover)] text-white transition-all active:scale-[0.98]">
-            {loading ? (
-              <span className="flex items-center gap-2">
-                <span className="h-4 w-4 rounded-full border-2 border-white/30 border-t-white animate-spin" />
-                Вход...
-              </span>
-            ) : 'Войти'}
-          </Button>
-        </form>
+            {error && (
+              <div className="flex items-center gap-2 px-4 py-3 rounded-xl bg-[var(--danger-light)] text-[var(--danger)] text-xs font-medium animate-fade-up">
+                {error}
+              </div>
+            )}
 
-        <p className="mt-8 text-center text-sm text-[var(--fg-tertiary)]">
+            <Button
+              type="submit"
+              disabled={loading}
+              className="w-full h-12 rounded-xl text-sm font-semibold bg-[var(--accent)] hover:bg-[var(--accent-hover)] text-white transition-all active:scale-[0.98] shadow-sm"
+            >
+              {loading ? (
+                <span className="flex items-center gap-2">
+                  <span className="h-4 w-4 rounded-full border-2 border-white/30 border-t-white animate-spin" />
+                  Вход...
+                </span>
+              ) : 'Войти'}
+            </Button>
+          </form>
+        </div>
+
+        <p className="mt-5 text-center text-sm text-[var(--fg-tertiary)]">
           Нет аккаунта?{' '}
-          <Link to="/register" className="font-semibold text-[var(--accent)] hover:opacity-80 transition-opacity">Зарегистрироваться</Link>
+          <Link to="/register" className="font-semibold text-[var(--accent)] hover:opacity-80 transition-opacity">
+            Зарегистрироваться
+          </Link>
         </p>
       </div>
     </div>
   );
-}
+}