first commit

app/styles.css

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+/* 全局样式 */
+:root {
+  --primary-color: #667eea;
+  --primary-dark: #5a67d8;
+  --background-color: #f5f5f5;
+  --card-background: #ffffff;
+  --border-color: #e0e0e0;
+  --text-primary: #000000;
+  --text-secondary: #6b7280;
+}
+
+body {
+  margin: 0;
+  padding: 0;
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
+    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
+    sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+  background-color: var(--background-color);
+}
+
+/* 聊天界面样式 */
+.chat-container {
+  height: 100vh;
+  display: flex;
+  flex-direction: column;
+  background-color: var(--background-color);
+}
+
+/* 顶部导航样式 */
+.header {
+  background-color: var(--primary-color);
+  color: white;
+  padding: 16px;
+  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
+}
+
+.header-content {
+  max-width: 1200px;
+  margin: 0 auto;
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+}
+
+.header-title {
+  margin: 0;
+  font-size: 20px;
+  font-weight: 600;
+}
+
+.header-subtitle {
+  margin: 4px 0 0 0;
+  font-size: 14px;
+  opacity: 0.9;
+}
+
+/* 主内容区域样式 */
+.main-content {
+  flex: 1;
+  display: flex;
+  max-width: 1200px;
+  width: 100%;
+  margin: 0 auto;
+  height: 100%;
+}
+
+/* 侧边栏样式 */
+.sidebar {
+  width: 25%;
+  min-width: 280px;
+  background-color: var(--card-background);
+  border-right: 1px solid var(--border-color);
+  display: flex;
+  flex-direction: column;
+}
+
+.sidebar-header {
+  padding: 16px;
+}
+
+.sidebar-title {
+  margin: 0 0 16px 0;
+  font-size: 16px;
+  font-weight: 600;
+}
+
+/* 聊天内容区样式 */
+.chat-area {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  background-color: var(--card-background);
+}
+
+.messages-container {
+  flex: 1;
+  overflow-y: auto;
+  padding: 16px;
+}
+
+/* 消息样式 */
+.message-row {
+  display: flex;
+  margin-bottom: 16px;
+  align-items: flex-end;
+}
+
+.message-row.user {
+  justify-content: flex-end;
+}
+
+.message-row.bot {
+  justify-content: flex-start;
+}
+
+.message-content {
+  max-width: 70%;
+  display: flex;
+  align-items: flex-end;
+}
+
+.avatar {
+  width: 36px;
+  height: 36px;
+  border-radius: 50%;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 16px;
+}
+
+.avatar.bot {
+  background-color: var(--primary-color);
+  margin-right: 8px;
+}
+
+.avatar.user {
+  background-color: var(--primary-dark);
+  margin-left: 8px;
+}
+
+.message-bubble {
+  padding: 12px 16px;
+  border-radius: 18px;
+  position: relative;
+}
+
+.message-bubble.user {
+  background-color: var(--primary-color);
+  color: white;
+}
+
+.message-bubble.bot {
+  background-color: var(--background-color);
+  color: var(--text-primary);
+}
+
+.message-time {
+  display: block;
+  margin-top: 4px;
+  font-size: 12px;
+  opacity: 0.7;
+}
+
+/* 输入区样式 */
+.input-area {
+  padding: 16px;
+  border-top: 1px solid var(--border-color);
+  background-color: var(--card-background);
+}
+
+.input-container {
+  display: flex;
+  align-items: flex-end;
+}
+
+/* 加载状态样式 */
+.loading-indicator {
+  display: flex;
+  justify-content: flex-start;
+  margin-bottom: 16px;
+  align-items: center;
+}
+
+.loading-dots {
+  display: flex;
+  align-items: center;
+  padding: 12px 16px;
+  background-color: var(--background-color);
+  border-radius: 18px;
+}
+
+.loading-dot {
+  width: 8px;
+  height: 8px;
+  border-radius: 50%;
+  background-color: var(--primary-color);
+  margin: 0 2px;
+  animation: pulse 1.4s infinite ease-in-out;
+}
+
+.loading-dot:nth-child(2) {
+  animation-delay: 0.2s;
+}
+
+.loading-dot:nth-child(3) {
+  animation-delay: 0.4s;
+}
+
+@keyframes pulse {
+  0%, 60%, 100% {
+    transform: scale(0.8);
+    opacity: 0.7;
+  }
+  30% {
+    transform: scale(1);
+    opacity: 1;
+  }
+}
+
+/* 移动端适配 */
+@media (max-width: 640px) {
+  .sidebar {
+    display: none;
+  }
+  
+  .message-content {
+    max-width: 85%;
+  }
+}