fix(ui): improve authentication UX and refine skin viewer components

- Add loading states to `ProfilePage` and `Navbar` to prevent flickering during authentication checks
- Implement animation pause/resume functionality in `SkinDetailModal` and `SkinViewer`
- Simplify `PageTransition` component by removing unnecessary complexity and state
- Refactor `SkinDetailModal` to use a more robust state management for animations
- Adjust `CharacterCard` skin dimensions for better layout consistency
- Clean up unused imports and redundant animation variants in several components

src/app/profile/page.tsx

@@ -106,7 +106,7 @@ export default function ProfilePage() {
   const [emailCodeCountdown, setEmailCodeCountdown] = useState(0);
   const [isChangingEmail, setIsChangingEmail] = useState(false);
 
-  const { user, isAuthenticated, logout, updateUser } = useAuth();
+  const { user, isAuthenticated, isLoading: isAuthLoading, logout, updateUser } = useAuth();
 
   // 加载用户数据
   useEffect(() => {
@@ -1099,6 +1099,27 @@ export default function ProfilePage() {
     );
   };
 
+  // auth 还在检查 token，先显示加载中，避免误判为未登录
+  if (isAuthLoading) {
+    return (
+      <div className="min-h-screen flex items-center justify-center bg-gradient-to-br from-slate-50 via-orange-50 to-amber-50 dark:from-gray-900 dark:via-gray-800 dark:to-gray-900">
+        <div className="text-center">
+          <motion.div
+            animate={{ rotate: 360 }}
+            transition={{ duration: 1, repeat: Infinity, ease: "linear" }}
+            className="mb-8"
+          >
+            <div className="w-16 h-16 bg-gradient-to-br from-orange-400 via-amber-500 to-orange-600 rounded-full flex items-center justify-center shadow-xl mx-auto">
+              <Cog6ToothIcon className="w-8 h-8 text-white" />
+            </div>
+          </motion.div>
+          <h2 className="text-2xl font-bold text-gray-900 dark:text-white mb-2">加载中...</h2>
+          <p className="text-gray-600 dark:text-gray-400">正在验证登录状态</p>
+        </div>
+      </div>
+    );
+  }
+
   if (!isAuthenticated) {
     return (
       <div className="min-h-screen flex items-center justify-center bg-gradient-to-br from-slate-50 via-orange-50 to-amber-50 dark:from-gray-900 dark:via-gray-800 dark:to-gray-900">

src/app/skins/page.tsx

@@ -3,8 +3,6 @@
 import { useState, useEffect, useCallback } from 'react';
 import { motion, AnimatePresence } from 'framer-motion';
 import { MagnifyingGlassIcon, EyeIcon, HeartIcon, ArrowDownTrayIcon, SparklesIcon, FunnelIcon, ArrowsUpDownIcon } from '@heroicons/react/24/outline';
-import { HeartIcon as HeartIconSolid } from '@heroicons/react/24/solid';
-import SkinViewer from '@/components/SkinViewer';
 import SkinDetailModal from '@/components/SkinDetailModal';
 import SkinCard from '@/components/SkinCard';
 import { searchTextures, toggleFavorite, type Texture } from '@/lib/api';

src/components/Navbar.tsx

@@ -15,7 +15,7 @@ export default function Navbar() {
   const [navbarHeight, setNavbarHeight] = useState(0);
   const [scrollProgress, setScrollProgress] = useState(0);
   const navbarRef = useRef<HTMLElement>(null);
-  const { user, isAuthenticated, logout } = useAuth();
+  const { user, isAuthenticated, isLoading: isAuthLoading, logout } = useAuth();
   const router = useRouter();
   const pathname = usePathname();
   const { scrollY } = useScroll();
@@ -213,7 +213,12 @@ export default function Navbar() {
               ))}
               
               {/* 用户头像框 - 增强的微交互 */}
-              {isAuthenticated ? (
+              {isAuthLoading ? (
+                <div className="flex items-center space-x-3">
+                  <div className="w-9 h-9 rounded-full bg-gray-200 dark:bg-gray-700 animate-pulse" />
+                  <div className="w-12 h-4 rounded bg-gray-200 dark:bg-gray-700 animate-pulse" />
+                </div>
+              ) : isAuthenticated ? (
                 <div className="flex items-center space-x-4">
                   <motion.div 
                     whileHover={{ scale: 1.05 }} 

src/components/PageTransition.tsx

@@ -1,191 +1,23 @@
 'use client';
 
-import { motion, AnimatePresence } from 'framer-motion';
-import { usePathname, useSearchParams } from 'next/navigation';
-import { useEffect, useState, useRef, Suspense } from 'react';
-import { useRouter } from 'next/navigation';
+import { motion } from 'framer-motion';
+import { usePathname } from 'next/navigation';
 
 interface PageTransitionProps {
   children: React.ReactNode;
 }
 
-// 内部组件：使用 useSearchParams 的部分
-function PageTransitionContent({ children }: { children: React.ReactNode }) {
-  const pathname = usePathname();
-  const searchParams = useSearchParams();
-  const router = useRouter();
-  const [isNavigating, setIsNavigating] = useState(false);
-  const [displayChildren, setDisplayChildren] = useState(children);
-  const [pendingChildren, setPendingChildren] = useState<React.ReactNode | null>(null);
-  const navigationTimeoutRef = useRef<NodeJS.Timeout | null>(null);
-
-  // 监听路由变化
-  useEffect(() => {
-    // 当 pathname 或 searchParams 变化时，表示路由发生了变化
-    if (children !== displayChildren) {
-      setPendingChildren(children);
-      setIsNavigating(true);
-      
-      // 清除之前的超时
-      if (navigationTimeoutRef.current) {
-        clearTimeout(navigationTimeoutRef.current);
-      }
-      
-      // 模拟加载时间，让 exit 动画有足够时间执行
-      navigationTimeoutRef.current = setTimeout(() => {
-        setDisplayChildren(children);
-        setPendingChildren(null);
-        setIsNavigating(false);
-      }, 500); // 给 exit 动画 300ms + 缓冲时间
-    }
-  }, [pathname, searchParams, children, displayChildren]);
-
-  // 清理超时
-  useEffect(() => {
-    return () => {
-      if (navigationTimeoutRef.current) {
-        clearTimeout(navigationTimeoutRef.current);
-      }
-    };
-  }, []);
-
-  const getPageVariants = (direction: 'left' | 'right' | 'up' | 'down' = 'right') => {
-    const directions = {
-      left: { x: -100, y: 0 },
-      right: { x: 100, y: 0 },
-      up: { x: 0, y: -100 },
-      down: { x: 0, y: 100 }
-    };
-
-    const exitDirections = {
-      left: { x: 100, y: 0 },
-      right: { x: -100, y: 0 },
-      up: { x: 0, y: 100 },
-      down: { x: 0, y: -100 }
-    };
-
-    return {
-      initial: {
-        opacity: 0,
-        ...directions[direction],
-        scale: 0.9,
-        rotateX: -15
-      },
-      animate: {
-        opacity: 1,
-        x: 0,
-        y: 0,
-        scale: 1,
-        rotateX: 0,
-        transition: {
-          duration: 0.5,
-          type: "spring" as const,
-          stiffness: 100,
-          damping: 15
-        }
-      },
-      exit: {
-        opacity: 0,
-        ...exitDirections[direction],
-        scale: 0.9,
-        rotateX: 15,
-        transition: {
-          duration: 0.3,
-        }
-      }
-    };
-  };
-
-  const getLoadingVariants = () => ({
-    initial: {
-      opacity: 0,
-      scale: 0.8,
-      y: 20
-    },
-    animate: {
-      opacity: 1,
-      scale: 1,
-      y: 0,
-      transition: {
-        duration: 0.3,
-      }
-    },
-    exit: {
-      opacity: 0,
-      scale: 0.8,
-      y: -20,
-      transition: {
-        duration: 0.2,
-      }
-    }
-  });
-
-  return (
-    <>
-      <AnimatePresence mode="wait">
-        {isNavigating && (
-          <motion.div
-            key="loading"
-            variants={getLoadingVariants()}
-            initial="initial"
-            animate="animate"
-            exit="exit"
-            className="fixed inset-0 z-50 flex items-center justify-center bg-white/80 dark:bg-gray-900/80 backdrop-blur-sm pointer-events-none"
-          >
-            <div className="text-center">
-              <motion.div
-                animate={{
-                  rotate: 360,
-                  scale: [1, 1.1, 1]
-                }}
-                transition={{
-                  rotate: { duration: 1, repeat: Infinity },
-                  scale: { duration: 1.5, repeat: Infinity }
-                }}
-                className="w-12 h-12 border-4 border-orange-500 border-t-transparent rounded-full mx-auto mb-4"
-              />
-              <motion.p
-                className="text-lg font-medium text-gray-700 dark:text-gray-300"
-                initial={{ opacity: 0, y: 10 }}
-                animate={{ opacity: 1, y: 0 }}
-                transition={{ delay: 0.2 }}
-              >
-                页面切换中...
-              </motion.p>
-            </div>
-          </motion.div>
-        )}
-      </AnimatePresence>
-
-      <AnimatePresence mode="wait">
-        <motion.div
-          key={pathname + searchParams.toString()}
-          variants={getPageVariants()}
-          initial="initial"
-          animate="animate"
-          exit="exit"
-          className="min-h-screen"
-        >
-          {displayChildren}
-        </motion.div>
-      </AnimatePresence>
-    </>
-  );
-}
-
-// 加载状态组件
-function PageTransitionFallback() {
-  return (
-    <div className="min-h-screen">
-      {null}
-    </div>
-  );
-}
-
 export default function PageTransition({ children }: PageTransitionProps) {
+  const pathname = usePathname();
+
   return (
-    <Suspense fallback={<PageTransitionFallback />}>
-      <PageTransitionContent>{children}</PageTransitionContent>
-    </Suspense>
+    <motion.div
+      key={pathname}
+      initial={{ opacity: 0, y: 8 }}
+      animate={{ opacity: 1, y: 0 }}
+      transition={{ duration: 0.3, ease: 'easeOut' }}
+    >
+      {children}
+    </motion.div>
   );
 }

src/components/SkinDetailModal.tsx

@@ -1,8 +1,8 @@
 'use client';
 
 import { useState, useEffect } from 'react';
-import { motion, AnimatePresence, useSpring, useTransform } from 'framer-motion';
-import { XMarkIcon, PlayIcon, PauseIcon, ArrowPathIcon, ForwardIcon } from '@heroicons/react/24/outline';
+import { motion, AnimatePresence } from 'framer-motion';
+import { XMarkIcon, PlayIcon } from '@heroicons/react/24/outline';
 import SkinViewer from './SkinViewer';
 
 interface SkinDetailModalProps {
@@ -26,27 +26,20 @@ interface SkinDetailModalProps {
 }
 
 export default function SkinDetailModal({ isOpen, onClose, texture, isExternalPreview = false }: SkinDetailModalProps) {
-  const [isPlaying, setIsPlaying] = useState(false);
   const [currentAnimation, setCurrentAnimation] = useState<'idle' | 'walking' | 'running' | 'swimming'>('idle');
   const [autoRotate, setAutoRotate] = useState(!isExternalPreview);
   const [rotation, setRotation] = useState(true);
   const [isMinimized, setIsMinimized] = useState(false);
-  const [activeTab, setActiveTab] = useState<'preview' | 'info' | 'settings'>('preview');
-  
-  // 弹簧动画配置
-  const springConfig = { stiffness: 300, damping: 30 };
-  const scale = useSpring(1, springConfig);
-  const rotate = useSpring(0, springConfig);
+  const [isPaused, setIsPaused] = useState(false); // 新增：动画暂停状态
   
   // 重置状态当对话框关闭时
   useEffect(() => {
     if (!isOpen) {
-      setIsPlaying(false);
       setCurrentAnimation('idle');
-      setAutoRotate(true);
+      setAutoRotate(!isExternalPreview);
       setRotation(true);
       setIsMinimized(false);
-      setActiveTab('preview');
+      setIsPaused(false); // 重置暂停状态
     }
   }, [isOpen]);
 
@@ -61,7 +54,8 @@ export default function SkinDetailModal({ isOpen, onClose, texture, isExternalPr
           break;
         case ' ':
           e.preventDefault();
-          setIsPlaying(!isPlaying);
+          // 空格键暂停/继续动画
+          setIsPaused(prev => !prev);
           break;
         case '1':
           setCurrentAnimation('idle');
@@ -77,14 +71,14 @@ export default function SkinDetailModal({ isOpen, onClose, texture, isExternalPr
           break;
         case 'm':
         case 'M':
-          setIsMinimized(!isMinimized);
+          setIsMinimized(prev => !prev);
           break;
       }
     };
 
     window.addEventListener('keydown', handleKeyDown);
     return () => window.removeEventListener('keydown', handleKeyDown);
-  }, [isOpen, onClose, isPlaying, isMinimized]);
+  }, [isOpen, onClose]);
 
   // 动画控制函数
   const handleAnimationChange = (animation: 'idle' | 'walking' | 'running' | 'swimming') => {
@@ -135,37 +129,6 @@ export default function SkinDetailModal({ isOpen, onClose, texture, isExternalPr
     }
   });
 
-  const getAnimationButtonVariants = (isActive: boolean) => ({
-    initial: { scale: 0.9, opacity: 0.8 },
-    animate: { 
-      scale: 1, 
-      opacity: 1,
-      transition: {
-        duration: 0.2,
-        type: "spring" as const,
-        stiffness: 300,
-        damping: 20
-      }
-    },
-    hover: {
-      scale: 1.05,
-      transition: { duration: 0.2 }
-    },
-    tap: {
-      scale: 0.95,
-      transition: { duration: 0.1 }
-    },
-    active: {
-      scale: 1.02,
-      transition: {
-        duration: 0.2,
-        type: "spring" as const,
-        stiffness: 400,
-        damping: 25
-      }
-    }
-  });
-
   if (!texture) return null;
 
   return (
@@ -278,32 +241,23 @@ export default function SkinDetailModal({ isOpen, onClose, texture, isExternalPr
                   animate={{ opacity: 1, scale: 1 }}
                   transition={{ delay: 0.3, duration: 0.5 }}
                 >
-                  <div className="w-full h-full max-w-2xl max-h-2xl">
-                    <motion.div
-                      animate={{ 
-                        scale: isPlaying ? 1.02 : 1,
-                        y: isPlaying ? -5 : 0
-                      }}
-                      transition={{ 
-                        scale: { duration: 0.2 },
-                        y: { duration: 0.2 }
-                      }}
-                      className="relative"
-                    >
+                  <div className="w-full h-full max-w-2xl max-h-2xl flex items-center justify-center">
+                    <div className="relative">
                       <div className="absolute inset-0 bg-gradient-to-br from-orange-400/20 to-amber-400/20 dark:from-orange-500/10 dark:to-amber-500/10 rounded-2xl blur-xl"></div>
                       <SkinViewer
                         skinUrl={texture.url}
                         isSlim={texture.is_slim}
-                        width={600}
-                        height={600}
+                        width={500}
+                        height={500}
                         className="rounded-2xl shadow-2xl border-2 border-white/60 dark:border-gray-600/60 relative z-10"
-                        autoRotate={autoRotate}
+                        autoRotate={autoRotate && currentAnimation === 'idle'}
                         walking={currentAnimation === 'walking'}
                         running={currentAnimation === 'running'}
                         jumping={currentAnimation === 'swimming'}
                         rotation={rotation}
+                        paused={isPaused}
                       />
-                    </motion.div>
+                    </div>
                   </div>
                 </motion.div>
 
@@ -333,24 +287,17 @@ export default function SkinDetailModal({ isOpen, onClose, texture, isExternalPr
                         { key: 'running', label: '跑步', icon: null },
                         { key: 'swimming', label: '游泳', icon: null }
                       ].map((anim, i) => (
-                        <motion.button
+                        <button
                           key={anim.key}
-                          variants={getAnimationButtonVariants(currentAnimation === anim.key)}
-                          animate={currentAnimation === anim.key ? "active" : "animate"}
-                          whileHover="hover"
-                          whileTap="tap"
                           onClick={() => handleAnimationChange(anim.key as any)}
-                          className={`p-4 rounded-xl text-sm font-semibold transition-all duration-300 transform ${
+                          className={`p-4 rounded-xl text-sm font-semibold transition-all duration-200 ${
                             currentAnimation === anim.key
-                              ? 'bg-gradient-to-r from-orange-500 via-amber-500 to-yellow-500 text-white shadow-2xl scale-105 ring-2 ring-orange-300 dark:ring-orange-500'
-                              : 'bg-white/80 dark:bg-gray-700/80 text-gray-700 dark:text-gray-300 hover:bg-orange-50 dark:hover:bg-orange-900/30 border border-orange-200/50 dark:border-gray-600 hover:border-orange-300 dark:hover:border-orange-400 hover:scale-105 hover:shadow-lg'
+                              ? 'bg-gradient-to-r from-orange-500 via-amber-500 to-yellow-500 text-white shadow-lg ring-2 ring-orange-300 dark:ring-orange-500'
+                              : 'bg-white/80 dark:bg-gray-700/80 text-gray-700 dark:text-gray-300 hover:bg-orange-50 dark:hover:bg-orange-900/30 border border-orange-200/50 dark:border-gray-600 hover:shadow-md'
                           }`}
-                          initial={{ opacity: 0, y: 20 }}
-  
-                          transition={{ delay: 0.6 + i * 0.1 }}
                         >
                           {anim.label}
-                        </motion.button>
+                        </button>
                       ))}
                     </div>
                   </motion.div>
@@ -440,7 +387,7 @@ export default function SkinDetailModal({ isOpen, onClose, texture, isExternalPr
                       快捷键
                     </p>
                     <div className="grid grid-cols-2 gap-2 text-xs">
-                      <div className="flex items-center"><kbd className="px-2 py-1 bg-white/70 dark:bg-gray-800/70 rounded border border-gray-300 dark:border-gray-600 text-xs mr-2">空格</kbd>播放/暂停</div>
+                      <div className="flex items-center"><kbd className="px-2 py-1 bg-white/70 dark:bg-gray-800/70 rounded border border-gray-300 dark:border-gray-600 text-xs mr-2">空格</kbd>暂停/继续</div>
                       <div className="flex items-center"><kbd className="px-2 py-1 bg-white/70 dark:bg-gray-800/70 rounded border border-gray-300 dark:border-gray-600 text-xs mr-2">1-4</kbd>切换动画</div>
                       <div className="flex items-center"><kbd className="px-2 py-1 bg-white/70 dark:bg-gray-800/70 rounded border border-gray-300 dark:border-gray-600 text-xs mr-2">M</kbd>最小化</div>
                       <div className="flex items-center"><kbd className="px-2 py-1 bg-white/70 dark:bg-gray-800/70 rounded border border-gray-300 dark:border-gray-600 text-xs mr-2">ESC</kbd>关闭</div>
@@ -469,6 +416,7 @@ export default function SkinDetailModal({ isOpen, onClose, texture, isExternalPr
                       walking={currentAnimation === 'walking'}
                       running={currentAnimation === 'running'}
                       jumping={currentAnimation === 'swimming'}
+                      paused={isPaused}
                     />
                   </div>
                   <p className="text-sm font-medium text-gray-700 dark:text-gray-300 truncate">

src/components/SkinViewer.tsx

@@ -17,6 +17,7 @@ interface SkinViewerProps {
   rotation?: boolean; // 新增：旋转控制
   isExternalPreview?: boolean; // 新增：是否为外部预览
   onImageLoaded?: () => void; // 新增：图片加载完成回调
+  paused?: boolean; // 新增：暂停动画
 }
 
 export default function SkinViewer({
@@ -33,6 +34,7 @@ export default function SkinViewer({
   rotation = true,
   isExternalPreview = false, // 新增：默认为false
   onImageLoaded, // 新增：图片加载完成回调
+  paused = false, // 新增：默认不暂停
 }: SkinViewerProps) {
   const canvasRef = useRef<HTMLCanvasElement>(null);
   const viewerRef = useRef<SkinViewer3D | null>(null);
@@ -141,6 +143,22 @@ export default function SkinViewer({
 
     const viewer = viewerRef.current;
     
+    // 暂停动画时，使用 animation.paused 属性来暂停动画
+    if (paused) {
+      if (viewer.animation) {
+        viewer.animation.paused = true;
+      }
+      viewer.autoRotate = false;
+      console.log('动画已暂停');
+      return;
+    } else {
+      // 恢复动画
+      if (viewer.animation) {
+        viewer.animation.paused = false;
+        console.log('动画已恢复');
+      }
+    }
+    
     // 外部预览时只使用静止动画，禁用所有其他动画
     if (isExternalPreview) {
       viewer.animation = new IdleAnimation();
@@ -170,7 +188,7 @@ export default function SkinViewer({
       viewer.autoRotate = autoRotate && !walking && !running && !jumping;
     }
     
-  }, [walking, running, jumping, autoRotate, isExternalPreview]);
+  }, [walking, running, jumping, autoRotate, isExternalPreview, paused]);
 
   // 当皮肤URL改变时更新
   useEffect(() => {

src/components/profile/CharacterCard.tsx

@@ -73,8 +73,8 @@ export default function CharacterCard({
           <SkinViewer
             skinUrl={skinUrl}
             isSlim={isSlim}
-            width={180}
-            height={180}
+            width={120}
+            height={120}
             autoRotate={false}
           />
         ) : (