优化 Dashboard 布局：实现炫酷徽章、水平滚动AI建议和玻璃拟态效果

frontend/src/views/DashboardEnhanced.vue

@@ -36,29 +36,8 @@
         </div>
       </header>
 
-      <!-- 学习概览主卡片 -->
-      <div class="main-overview-card">
-        <div class="overview-header">
-          <div class="level-progress-main">
-            <div class="level-badge">
-              <span class="level-text">Lv.{{ userLevel }} 学习达人</span>
-              <div class="level-fire">🔥</div>
-            </div>
-            <div class="progress-info">
-              <div class="progress-bar-main">
-                <div class="progress-fill-animated" :style="{ width: userProgress.rankPercent + '%' }"></div>
-              </div>
-              <span class="progress-text">排名超越 {{ userProgress.rankPercent }}% 同龄用户</span>
-            </div>
-          </div>
-          <div class="overview-actions">
-            <button @click="showDetailedStats" class="action-btn primary">
-              📊 详细分析
-            </button>
-          </div>
-        </div>
-
-        <!-- 核心统计数据 -->
+      <!-- 学习概览卡（轻量化） -->
+      <div class="overview-card">
         <div class="core-stats">
           <div class="stat-item">
             <div class="stat-icon">⏱️</div>
@@ -88,20 +67,18 @@
           </div>
         </div>
 
-        <!-- 学习小目标 Widget -->
-        <div class="learning-goals">
+        <!-- 今日学习目标进度 -->
+        <div class="goal-progress-container">
           <div class="goal-header">
             <span class="goal-icon">🌟</span>
-            <span class="goal-title">今日学习目标</span>
+            <span class="goal-title">今日目标</span>
           </div>
-          <div class="goal-content">
-            <p class="goal-text">{{ getTodayGoal() }}</p>
-            <div class="goal-progress">
-              <div class="goal-bar">
-                <div class="goal-fill" :style="{ width: getGoalProgress() + '%' }"></div>
-              </div>
-              <span class="goal-percentage">{{ getGoalProgress() }}%</span>
+          <p class="goal-text">{{ getTodayGoal() }}</p>
+          <div class="goal-progress">
+            <div class="goal-bar">
+              <div class="goal-fill" :style="{ width: getGoalProgress() + '%' }"></div>
             </div>
+            <span class="goal-percentage">{{ getGoalProgress() }}%</span>
           </div>
         </div>
       </div>
@@ -190,22 +167,29 @@
             <span v-else>⏳</span>
           </button>
         </div>
-        <div class="suggestions-grid">
-          <div v-for="suggestion in aiSuggestions" :key="suggestion.id" class="suggestion-card" @click="applySuggestion(suggestion)">
-            <div class="suggestion-icon">{{ suggestion.icon }}</div>
-            <div class="suggestion-content">
-              <h4 class="suggestion-title">{{ suggestion.title }}</h4>
-              <p class="suggestion-description">{{ suggestion.description }}</p>
-              <div class="suggestion-meta">
-                <span class="meta-item">{{ suggestion.duration }}</span>
-                <span class="meta-item">{{ suggestion.difficulty }}</span>
+        <!-- 水平滚动的AI建议卡片 -->
+        <div class="suggestions-carousel">
+          <div class="suggestions-track">
+            <div v-for="suggestion in aiSuggestions" :key="suggestion.id" class="suggestion-card" @click="applySuggestion(suggestion)">
+              <div class="suggestion-icon">{{ suggestion.icon }}</div>
+              <div class="suggestion-content">
+                <h4 class="suggestion-title">{{ suggestion.title }}</h4>
+                <p class="suggestion-description">{{ suggestion.description }}</p>
+                <div class="suggestion-meta">
+                  <span class="meta-item">{{ suggestion.duration }}</span>
+                  <span class="meta-item">{{ suggestion.difficulty }}</span>
+                </div>
+              </div>
+              <div class="suggestion-action">
+                <span class="action-arrow">→</span>
               </div>
-            </div>
-            <div class="suggestion-action">
-              <span class="action-arrow">→</span>
             </div>
           </div>
         </div>
+        <!-- 悬浮AI按钮 -->
+        <button class="ai-more-btn" @click="showDetailedStats">
+          <span>🤖</span>
+        </button>
       </div>
     </div>
 
@@ -738,7 +722,97 @@ window.addEventListener('resize', () => {
   font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
 }
 
-/* 背景层 - 深浅分层护眼配色 */
+/* 布局比例调整 */
+.dashboard-container {
+  max-width: 1400px;
+  margin: 0 auto;
+  padding: 20px;
+  position: relative;
+  z-index: 1;
+}
+
+/* 响应式优化 */
+@media (max-width: 1024px) {
+  .data-cards-grid {
+    grid-template-columns: 1fr;
+  }
+
+  .data-card.large {
+    grid-column: span 1;
+  }
+
+  .suggestions-track {
+    padding-left: 10px;
+    padding-right: 60px; /* 为AI按钮留出空间 */
+  }
+}
+
+@media (max-width: 768px) {
+  .dashboard-container {
+    padding: 16px;
+  }
+
+  .top-header {
+    flex-direction: column;
+    gap: 16px;
+    padding: 20px;
+  }
+
+  .core-stats {
+    flex-direction: column;
+    gap: 12px;
+  }
+
+  .stat-divider {
+    width: 100%;
+    height: 1px;
+  }
+
+  .overview-header {
+    flex-direction: column;
+    gap: 16px;
+    align-items: flex-start;
+  }
+
+  .ai-assistant-fab {
+    width: 50px;
+    height: 50px;
+    bottom: 20px;
+    right: 20px;
+  }
+
+  .ai-fab-icon {
+    font-size: 20px;
+  }
+
+  .suggestions-track {
+    padding-left: 10px;
+    padding-right: 60px;
+  }
+}
+
+@media (max-width: 480px) {
+  .section-header {
+    flex-direction: column;
+    gap: 12px;
+    align-items: flex-start;
+  }
+
+  .overview-card {
+    padding: 16px;
+  }
+
+  .data-card {
+    padding: 16px;
+  }
+
+  .suggestion-card {
+    min-width: 280px;
+    padding: 16px;
+  }
+}
+
+/* 背景层 - 优化渐变 */
 .bg-gradient {
   position: fixed;
   top: 0;
@@ -746,15 +820,24 @@ window.addEventListener('resize', () => {
   width: 100%;
   height: 100%;
   background: linear-gradient(135deg,
-    #1e293b 0%,
-    #334155 25%,
-    #475569 50%,
-    #334155 75%,
-    #1e293b 100%
+    #0f172a 0%,
+    #1e293b 25%,
+    #334155 50%,
+    #1e293b 75%,
+    #0f172a 100%
   );
   z-index: -2;
 }
 
+/* 玻璃拟态通用样式 */
+.glass-effect {
+  background: rgba(255, 255, 255, 0.08);
+  backdrop-filter: blur(12px);
+  -webkit-backdrop-filter: blur(12px);
+  border: 1px solid rgba(255, 255, 255, 0.12);
+  border-radius: 16px;
+}
+
 .floating-orbs {
   position: fixed;
   width: 100%;
@@ -861,9 +944,10 @@ window.addEventListener('resize', () => {
   justify-content: space-between;
   align-items: center;
   margin-bottom: 30px;
-  background: rgba(30, 41, 59, 0.8);
+  background: rgba(255, 255, 255, 0.08);
   backdrop-filter: blur(20px);
-  border: 1px solid rgba(255, 255, 255, 0.1);
+  -webkit-backdrop-filter: blur(20px);
+  border: 1px solid rgba(255, 255, 255, 0.12);
   border-radius: 20px;
   padding: 24px 32px;
   box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
@@ -992,6 +1076,39 @@ window.addEventListener('resize', () => {
   60% { transform: translateY(-5px); }
 }
 
+.level-badge {
+  background: linear-gradient(135deg, #00e0ff, #45ff9d);
+  color: #0f172a;
+  font-weight: 600;
+  padding: 6px 14px;
+  border-radius: 20px;
+  box-shadow: 0 0 12px rgba(0, 255, 204, 0.6);
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  animation: pulse 2s infinite;
+}
+
+@keyframes pulse {
+  0%, 100% { box-shadow: 0 0 8px rgba(0,255,204,0.5); }
+  50% { box-shadow: 0 0 16px rgba(0,255,204,0.9); }
+}
+
+.badge-glow {
+  background: linear-gradient(135deg, #00e0ff, #45ff9d);
+  -webkit-background-clip: text;
+  -webkit-text-fill-color: transparent;
+  background-clip: text;
+  font-weight: 700;
+}
+
+/* 卡片玻璃拟态效果 */
+.data-card {
+  background: rgba(255, 255, 255, 0.08);
+  backdrop-filter: blur(8px);
+  border: 1px solid rgba(255, 255, 255, 0.1);
+}
+
 .progress-info {
   display: flex;
   align-items: center;
@@ -1166,9 +1283,9 @@ window.addEventListener('resize', () => {
   min-width: 40px;
 }
 
-/* 数据卡片区 */
+/* 数据卡片区 - 提升视觉核心地位 */
 .data-cards-section {
-  margin-bottom: 32px;
+  margin: 24px 0 32px;
 }
 
 .section-header {
@@ -1183,12 +1300,15 @@ window.addEventListener('resize', () => {
   font-size: 24px;
   font-weight: 700;
   color: #ECEFF4;
+  display: flex;
+  align-items: center;
+  gap: 10px;
 }
 
 .filter-select {
-  background: rgba(30, 41, 59, 0.8);
+  background: rgba(255, 255, 255, 0.08);
   color: #ECEFF4;
-  border: 1px solid rgba(255, 255, 255, 0.1);
+  border: 1px solid rgba(255, 255, 255, 0.12);
   padding: 8px 16px;
   border-radius: 8px;
   font-size: 14px;
@@ -1201,9 +1321,10 @@ window.addEventListener('resize', () => {
 }
 
 .data-card {
-  background: rgba(30, 41, 59, 0.6);
-  backdrop-filter: blur(16px);
-  border: 1px solid rgba(255, 255, 255, 0.1);
+  background: rgba(255, 255, 255, 0.08);
+  backdrop-filter: blur(8px);
+  -webkit-backdrop-filter: blur(8px);
+  border: 1px solid rgba(255, 255, 255, 0.12);
   border-radius: 20px;
   padding: 24px;
   transition: all 0.3s ease;
@@ -1211,7 +1332,7 @@ window.addEventListener('resize', () => {
 }
 
 .data-card:hover {
-  background: rgba(30, 41, 59, 0.8);
+  background: rgba(255, 255, 255, 0.12);
   transform: translateY(-4px);
   box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
 }
@@ -1220,6 +1341,137 @@ window.addEventListener('resize', () => {
   grid-column: span 2;
 }
 
+/* 优化后的学习概览卡片 */
+.overview-card {
+  background: rgba(30, 41, 59, 0.6);
+  backdrop-filter: blur(20px);
+  border: 1px solid rgba(255, 255, 255, 0.1);
+  border-radius: 24px;
+  padding: 24px;
+  margin-bottom: 24px;
+  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.2);
+}
+
+.core-stats {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  gap: 20px;
+  margin-bottom: 24px;
+}
+
+.stat-item {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  flex: 1;
+  padding: 16px;
+  background: rgba(255, 255, 255, 0.05);
+  border-radius: 16px;
+  border: 1px solid rgba(255, 255, 255, 0.08);
+  transition: all 0.3s ease;
+}
+
+.stat-item:hover {
+  background: rgba(255, 255, 255, 0.08);
+  transform: translateY(-2px);
+}
+
+.stat-icon {
+  font-size: 28px;
+  margin-bottom: 8px;
+}
+
+.stat-content {
+  text-align: center;
+}
+
+.stat-number {
+  font-size: 28px;
+  font-weight: 700;
+  color: #58C5A5;
+  text-shadow: 0 0 15px rgba(88, 197, 165, 0.4);
+  margin-bottom: 4px;
+}
+
+.stat-unit {
+  font-size: 14px;
+  color: #8892A0;
+  font-weight: 500;
+  margin-bottom: 4px;
+}
+
+.stat-label {
+  font-size: 14px;
+  color: #ECEFF4;
+  font-weight: 500;
+}
+
+.stat-divider {
+  width: 1px;
+  height: 60px;
+  background: linear-gradient(to bottom, transparent, rgba(255, 255, 255, 0.1), transparent);
+}
+
+.goal-progress-container {
+  background: rgba(168, 230, 207, 0.1);
+  border: 1px solid rgba(168, 230, 207, 0.2);
+  border-radius: 16px;
+  padding: 16px;
+}
+
+.goal-header {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  margin-bottom: 12px;
+}
+
+.goal-icon {
+  font-size: 18px;
+}
+
+.goal-title {
+  font-size: 16px;
+  font-weight: 600;
+  color: #A8E6CF;
+}
+
+.goal-text {
+  color: #ECEFF4;
+  font-size: 14px;
+  margin-bottom: 12px;
+  line-height: 1.4;
+}
+
+.goal-progress {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+}
+
+.goal-bar {
+  flex: 1;
+  height: 6px;
+  background: rgba(255, 255, 255, 0.1);
+  border-radius: 3px;
+  overflow: hidden;
+}
+
+.goal-fill {
+  height: 100%;
+  background: linear-gradient(90deg, #58C5A5, #48B885);
+  border-radius: 3px;
+  transition: width 1s ease;
+}
+
+.goal-percentage {
+  color: #58C5A5;
+  font-weight: 600;
+  min-width: 36px;
+  font-size: 14px;
+}
+
 .card-header {
   display: flex;
   justify-content: space-between;
@@ -1437,10 +1689,29 @@ window.addEventListener('resize', () => {
   cursor: not-allowed;
 }
 
-.suggestions-grid {
-  display: grid;
-  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
+.suggestions-carousel {
+  position: relative;
+  overflow: hidden;
+  padding: 10px 0 30px;
+}
+
+.suggestions-track {
+  display: flex;
   gap: 20px;
+  overflow-x: auto;
+  scroll-snap-type: x mandatory;
+  padding-bottom: 10px;
+  scrollbar-width: thin;
+  scrollbar-color: rgba(88, 197, 165, 0.5) transparent;
+}
+
+.suggestions-track::-webkit-scrollbar {
+  height: 6px;
+}
+
+.suggestions-track::-webkit-scrollbar-thumb {
+  background: rgba(88, 197, 165, 0.5);
+  border-radius: 3px;
 }
 
 .suggestion-card {
@@ -1449,10 +1720,12 @@ window.addEventListener('resize', () => {
   border: 1px solid rgba(255, 255, 255, 0.1);
   border-radius: 16px;
   padding: 20px;
+  min-width: 320px;
   display: flex;
   gap: 16px;
   cursor: pointer;
   transition: all 0.3s ease;
+  scroll-snap-align: start;
 }
 
 .suggestion-card:hover {
@@ -1462,6 +1735,30 @@ window.addEventListener('resize', () => {
   border-color: rgba(88, 197, 165, 0.3);
 }
 
+.ai-more-btn {
+  position: absolute;
+  right: 20px;
+  bottom: 10px;
+  width: 48px;
+  height: 48px;
+  border-radius: 50%;
+  background: linear-gradient(135deg, #58C5A5, #48B885);
+  border: none;
+  color: white;
+  font-size: 20px;
+  cursor: pointer;
+  box-shadow: 0 4px 16px rgba(88, 197, 165, 0.4);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  z-index: 10;
+}
+
+.ai-more-btn:hover {
+  transform: scale(1.1);
+  box-shadow: 0 6px 20px rgba(88, 197, 165, 0.6);
+}
+
 .suggestion-icon {
   font-size: 24px;
   width: 48px;