first commit

app/muiAnimations.css

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+/* MUI 自定义动画效果 */
+
+/* 消息淡入动画 */
+@keyframes messageFadeIn {
+  from {
+    opacity: 0;
+    transform: translateY(10px);
+  }
+  to {
+    opacity: 1;
+    transform: translateY(0);
+  }
+}
+
+/* 输入框聚焦动画 */
+@keyframes inputFocus {
+  from {
+    box-shadow: 0 0 0 0 rgba(102, 126, 234, 0.2);
+  }
+  to {
+    box-shadow: 0 0 0 8px rgba(102, 126, 234, 0.1);
+  }
+}
+
+/* 打字指示器动画 */
+@keyframes typingBounce {
+  0%, 60%, 100% {
+    transform: translateY(0);
+  }
+  30% {
+    transform: translateY(-5px);
+  }
+}
+
+/* 按钮悬停动画 */
+@keyframes buttonHover {
+  from {
+    transform: scale(1);
+  }
+  to {
+    transform: scale(1.05);
+  }
+}
+
+/* 侧边栏项目选中动画 */
+@keyframes sidebarItemSelect {
+  from {
+    background-color: rgba(102, 126, 234, 0.05);
+    border-left: 2px solid transparent;
+  }
+  to {
+    background-color: rgba(102, 126, 234, 0.15);
+    border-left: 4px solid #667eea;
+  }
+}
+
+/* 应用动画到MUI组件 */
+.MuiPaper-root {
+  transition: all 0.3s ease;
+}
+
+/* 确保消息动画应用 */
+.chat-message-enter {
+  animation: messageFadeIn 0.3s ease-out;
+}
+
+/* 输入框聚焦效果 */
+.MuiOutlinedInput-root.Mui-focused {
+  animation: inputFocus 0.2s ease-out;
+}
+
+/* 打字指示器效果 */
+.typing-indicator span {
+  display: inline-block;
+  width: 8px;
+  height: 8px;
+  border-radius: 50%;
+  background-color: #667eea;
+  margin: 0 2px;
+  animation: typingBounce 1.4s infinite ease-in-out both;
+}
+
+.typing-indicator span:nth-child(1) {
+  animation-delay: -0.32s;
+}
+
+.typing-indicator span:nth-child(2) {
+  animation-delay: -0.16s;
+}
+
+.typing-indicator span:nth-child(3) {
+  animation-delay: 0;
+}
+
+/* 按钮悬停效果 */
+.MuiButton-root:not(:disabled) {
+  transition: transform 0.2s ease;
+}
+
+.MuiButton-root:not(:disabled):hover {
+  transform: scale(1.05);
+}
+
+/* 平滑滚动 */
+.chat-container {
+  scroll-behavior: smooth;
+}
+
+/* 响应式调整 */
+@media (max-width: 600px) {
+  .MuiBox-root {
+    transition: padding 0.3s ease;
+  }
+}
+
+/* 加载指示器动画 */
+@keyframes spin {
+  from {
+    transform: rotate(0deg);
+  }
+  to {
+    transform: rotate(360deg);
+  }
+}
+
+.loading-spinner {
+  animation: spin 1s linear infinite;
+}