feat: 新增登录页面组件及其样式。

src/pages/Login/Login.css

@@ -12,6 +12,8 @@
   --error-color: #ef4444;
 }
 
+/* ... existing styles ... */
+
 /* ===================== PAGE LAYOUT & BACKGROUND ===================== */
 .login-page {
   min-height: 100vh;
@@ -23,13 +25,15 @@
   color: var(--text-primary);
   position: relative;
   overflow: hidden;
+  perspective: 1200px;
+  /* Enable 3D space */
 
   /* Dynamic Mesh Gradient Background */
   background-color: #f8fafc;
   background-image:
-    radial-gradient(at 0% 0%, hsla(253,16%,7%,1) 0, transparent 50%), 
+    radial-gradient(at 0% 0%, hsla(253, 16%, 7%, 1) 0, transparent 50%),
-    radial-gradient(at 50% 0%, hsla(225,39%,30%,1) 0, transparent 50%), 
+    radial-gradient(at 50% 0%, hsla(225, 39%, 30%, 1) 0, transparent 50%),
-    radial-gradient(at 100% 0%, hsla(339,49%,30%,1) 0, transparent 50%);
+    radial-gradient(at 100% 0%, hsla(339, 49%, 30%, 1) 0, transparent 50%);
   background:
     radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
     radial-gradient(at 100% 0%, rgba(168, 85, 247, 0.15) 0px, transparent 50%),
@@ -38,6 +42,33 @@
     #f8fafc;
 }
 
+/* ===================== STRENGTH METER ===================== */
+.password-strength-meter {
+  margin-top: 0.5rem;
+  display: flex;
+  flex-direction: column;
+  gap: 0.375rem;
+}
+
+.strength-bars {
+  display: flex;
+  gap: 0.25rem;
+}
+
+.strength-bar {
+  height: 4px;
+  flex: 1;
+  border-radius: 2px;
+  transition: all 0.3s ease;
+}
+
+.strength-text {
+  font-size: 0.75rem;
+  font-weight: 600;
+  text-align: right;
+  transition: color 0.3s ease;
+}
+
 /* Noise Texture Overlay */
 .login-page::before {
   content: "";

src/pages/Login/Login.tsx

@@ -1,7 +1,7 @@
 import { useState, useEffect } from 'react';
 import { useNavigate, Link, useLocation } from 'react-router-dom';
 import { Icon } from '@iconify/react';
-import { motion, AnimatePresence } from 'framer-motion';
+import { motion, AnimatePresence, useMotionValue, useTransform, useSpring } from 'framer-motion';
 import authService from '../../services/authService';
 import './Login.css';
 
@@ -68,19 +68,105 @@ export default function Login({ mode = 'login' }: LoginProps) {
     }
   };
 
+  // 3D Tilt Logic
+  const x = useMotionValue(0);
+  const y = useMotionValue(0);
+  const mouseX = useSpring(x, { stiffness: 150, damping: 15 });
+  const mouseY = useSpring(y, { stiffness: 150, damping: 15 });
+
+  const rotateX = useTransform(mouseY, [-0.5, 0.5], ["7deg", "-7deg"]);
+  const rotateY = useTransform(mouseX, [-0.5, 0.5], ["-7deg", "7deg"]);
+
+  const handleMouseMove = (e: React.MouseEvent) => {
+    const rect = e.currentTarget.getBoundingClientRect();
+    const width = rect.width;
+    const height = rect.height;
+    const mouseXFromCenter = e.clientX - rect.left - width / 2;
+    const mouseYFromCenter = e.clientY - rect.top - height / 2;
+    x.set(mouseXFromCenter / width);
+    y.set(mouseYFromCenter / height);
+  };
+
+  const handleMouseLeave = () => {
+    x.set(0);
+    y.set(0);
+  };
+
+  // Password Strength Logic
+  const calculateStrength = (pwd: string) => {
+    let score = 0;
+    if (!pwd) return 0;
+    if (pwd.length > 7) score += 1;
+    if (pwd.match(/[a-z]/) && pwd.match(/[A-Z]/)) score += 1;
+    if (pwd.match(/\d/)) score += 1;
+    if (pwd.match(/[^a-zA-Z\d]/)) score += 1;
+    return score;
+  };
+
+  const strength = calculateStrength(formData.password);
+  const strengthColors = ['#e2e8f0', '#ef4444', '#f59e0b', '#3b82f6', '#10b981'];
+  const strengthLabels = ['未输入', '弱', '中', '强', '极强'];
+
+  const Particles = () => {
+    // Simple random particles
+    return (
+      <div className="particles-container" style={{ position: 'absolute', inset: 0, overflow: 'hidden', pointerEvents: 'none', zIndex: 0 }}>
+        {[...Array(20)].map((_, i) => (
+          <motion.div
+            key={i}
+            initial={{
+              x: Math.random() * window.innerWidth,
+              y: Math.random() * window.innerHeight,
+              opacity: Math.random() * 0.5 + 0.1,
+              scale: Math.random() * 0.5 + 0.5,
+            }}
+            animate={{
+              y: [null, Math.random() * window.innerHeight],
+              x: [null, Math.random() * window.innerWidth],
+            }}
+            transition={{
+              duration: Math.random() * 20 + 20,
+              repeat: Infinity,
+              repeatType: "reverse",
+              ease: "linear",
+            }}
+            style={{
+              position: 'absolute',
+              width: Math.random() * 4 + 2 + 'px', // 2-6px size
+              height: Math.random() * 4 + 2 + 'px',
+              borderRadius: '50%',
+              backgroundColor: i % 2 === 0 ? '#6366f1' : '#ec4899', // Theme colors
+              filter: 'blur(1px)',
+            }}
+          />
+        ))}
+      </div>
+    );
+  };
+
   return (
     <div className="login-page">
+      <Particles />
       <motion.div
         initial={{ opacity: 0, y: 20 }}
         animate={{ opacity: 1, y: 0 }}
         transition={{ duration: 0.6, ease: [0.22, 1, 0.36, 1] }}
+        style={{
+          rotateX,
+          rotateY,
+          transformStyle: "preserve-3d",
+          perspective: 1000
+        }}
+        onMouseMove={handleMouseMove}
+        onMouseLeave={handleMouseLeave}
         className="login-container"
       >
         <div className="login-header">
           <motion.div
             className="login-logo"
-            whileHover={{ scale: 1.05, rotate: 5 }}
+            whileHover={{ scale: 1.05, rotate: 5, z: 50 }}
             whileTap={{ scale: 0.95 }}
+            style={{ transformStyle: "preserve-3d" }}
           >
             <Icon icon="solar:wallet-2-bold-duotone" width="36" height="36" />
           </motion.div>
@@ -122,6 +208,7 @@ export default function Login({ mode = 'login' }: LoginProps) {
                 animate={{ opacity: 1, height: 'auto', marginBottom: 16 }}
                 exit={{ opacity: 0, height: 0, marginBottom: 0 }}
                 className="login-error"
+                style={{ transformStyle: "preserve-3d", translateZ: 20 }}
               >
                 <Icon icon="solar:danger-circle-bold-duotone" width="20" />
                 {error}
@@ -200,8 +287,36 @@ export default function Login({ mode = 'login' }: LoginProps) {
                 {showPassword ? <Icon icon="solar:eye-closed-bold-duotone" width="18" /> : <Icon icon="solar:eye-bold-duotone" width="18" />}
               </button>
             </div>
+
             <AnimatePresence>
-              {!isLogin && (
+              {!isLogin && formData.password.length > 0 && (
+                <motion.div
+                  initial={{ opacity: 0, height: 0 }}
+                  animate={{ opacity: 1, height: 'auto' }}
+                  exit={{ opacity: 0, height: 0 }}
+                  className="password-strength-meter"
+                >
+                  <div className="strength-bars">
+                    {[1, 2, 3, 4].map((i) => (
+                      <div
+                        key={i}
+                        className="strength-bar"
+                        style={{
+                          backgroundColor: strength >= i ? strengthColors[strength] : '#e2e8f0',
+                          opacity: strength >= i ? 1 : 0.4
+                        }}
+                      />
+                    ))}
+                  </div>
+                  <span className="strength-text" style={{ color: strengthColors[strength] }}>
+                    {strengthLabels[strength]}
+                  </span>
+                </motion.div>
+              )}
+            </AnimatePresence>
+
+            <AnimatePresence>
+              {!isLogin && formData.password.length === 0 && (
                 <motion.span
                   initial={{ opacity: 0, height: 0 }}
                   animate={{ opacity: 1, height: 'auto' }}