/* 基础样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #10a37f;
  --primary-hover: #0d8a6c;
  --text-color: #374151;
  --text-secondary: #6b7280;
  --bg-color: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --border-color: #e5e7eb;
  --shadow-color: rgba(0, 0, 0, 0.1);
  --message-ai: #f7f7f8;
  --message-human: #ffffff;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* 暗色模式 */
@media (prefers-color-scheme: dark) {
  :root {
    --primary-color: #10a37f;
    --primary-hover: #0d8a6c;
    --text-color: #d1d5db;
    --text-secondary: #9ca3af;
    --bg-color: #202123;
    --bg-secondary: #2d2d33;
    --bg-tertiary: #343541;
    --border-color: #4b5563;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --message-ai: #444654;
    --message-human: #343541;
  }
}

body {
  font-family: var(--font-family);
  color: var(--text-color);
  background-color: var(--bg-color);
  line-height: 1.5;
  height: 100vh;
  overflow: hidden;
}

.app-container {
  display: flex;
  height: 100vh;
  width: 100%;
  overflow-x: hidden;
}

/* 侧边栏容器 */
.sidebar-container {
  position: relative;
  width: 260px;
  min-width: 260px;
  height: 100%;
  transition: width 0.3s ease, min-width 0.3s ease;
  flex-shrink: 0;
  z-index: 10;
}

.app-container.sidebar-collapsed .sidebar-container {
  width: 0;
  min-width: 0;
}

/* 侧边栏折叠按钮 */
.sidebar-toggle {
  position: absolute;
  top: 50%;
  right: -18px;
  transform: translateY(-50%);
  z-index: 20;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--primary-color);
  border: 2px solid var(--bg-color);
  box-shadow: 0 2px 8px var(--shadow-color);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  color: white;
  transition: transform 0.3s ease;
  outline: none;
}

.sidebar-toggle:hover {
  background-color: var(--primary-hover);
}

.sidebar-toggle svg {
  width: 16px;
  height: 16px;
  transition: transform 0.3s ease;
}

.app-container.sidebar-collapsed .sidebar-toggle {
  transform: translateY(-50%) rotate(180deg);
}

/* 侧边栏内容 */
.sidebar {
  height: 100%;
  width: 100%;
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sidebar-header {
  padding: 10px;
  border-bottom: 1px solid var(--border-color);
}

.new-chat-btn {
  width: 100%;
  padding: 10px 15px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background-color 0.2s;
}

.new-chat-btn:hover {
  background-color: var(--bg-tertiary);
}

.conversations-list {
  flex: 1;
  overflow-y: auto;
  padding: 10px;
}

.conversation-item {
  padding: 10px;
  border-radius: 6px;
  margin-bottom: 5px;
  cursor: pointer;
  font-size: 14px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.conversation-item:hover {
  background-color: var(--bg-tertiary);
}

.conversation-item.active {
  background-color: var(--bg-tertiary);
  font-weight: 500;
}

.delete-conversation-btn {
  color: var(--text-secondary);
  opacity: 0;
  transition: opacity 0.2s;
  padding: 4px;
  border-radius: 50%;
  background: none;
  border: none;
  cursor: pointer;
}

.conversation-item:hover .delete-conversation-btn {
  opacity: 1;
}

.delete-conversation-btn:hover {
  color: #f56565;
  background-color: rgba(245, 101, 101, 0.1);
}

.sidebar-footer {
  padding: 10px;
  border-top: 1px solid var(--border-color);
}

.user-info {
  display: flex;
  align-items: center;
  padding: 5px;
  position: relative;
}

.user-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background-color: var(--primary-color);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  margin-right: 10px;
  flex-shrink: 0;
}

.user-name {
  font-size: 14px;
  font-weight: 500;
  flex-grow: 1;
}

.api-key-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: all 0.2s;
}

.api-key-btn:hover {
  background-color: var(--bg-tertiary);
}

.api-key-btn svg {
  transition: transform 0.2s;
}

.api-key-btn.active svg {
  transform: rotate(180deg);
}

.api-key-container {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  padding: 0 10px;
}

.api-key-container.show {
  max-height: 120px;
  padding: 10px;
}

.api-key-input-group {
  display: flex;
  margin-bottom: 10px;
}

.api-key-input-group input {
  flex: 1;
  border: 1px solid var(--border-color);
  border-radius: 4px 0 0 4px;
  padding: 8px 10px;
  font-size: 12px;
  background-color: var(--bg-color);
  color: var(--text-color);
}

.api-key-save-btn {
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 0 4px 4px 0;
  padding: 0 10px;
  cursor: pointer;
  font-size: 12px;
  transition: background-color 0.2s;
}

.api-key-save-btn:hover {
  background-color: var(--primary-hover);
}

.api-key-actions {
  display: flex;
  gap: 6px;
  margin-bottom: 6px;
}

.api-key-toggle-btn, .api-key-clear-btn {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 12px;
  cursor: pointer;
  flex: 1;
  transition: all 0.2s;
}

.api-key-toggle-btn:hover, .api-key-clear-btn:hover {
  background-color: var(--border-color);
}

.api-key-status {
  font-size: 12px;
  margin-top: 6px;
  color: var(--text-secondary);
}

/* 主内容区样式 */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100%;
  background-color: var(--bg-color);
  position: relative;
  transition: margin-left 0.3s ease;
}

.app-container.sidebar-collapsed .main-content {
  margin-left: 0;
}

.chat-container {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.chat-header {
  padding: 10px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: center;
}

.model-selector {
  display: flex;
  align-items: center;
  cursor: pointer;
  padding: 5px 10px;
  border-radius: 6px;
  transition: background-color 0.2s;
}

.model-selector:hover {
  background-color: var(--bg-tertiary);
}

.model-selector span {
  margin-right: 5px;
  font-weight: 500;
}

.messages-container {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
}

.message {
  padding: 16px;
  margin-bottom: 16px;
  border-radius: 8px;
  max-width: 100%;
  animation: fadeIn 0.3s ease;
}

.message.ai {
  align-self: flex-start;
  background-color: var(--message-ai);
  border-radius: 0 10px 10px 10px;
}

.message.user {
  align-self: flex-end;
  background-color: var(--message-human);
  border-radius: 10px 0 10px 10px;
  border: 1px solid var(--border-color);
}

.message.system {
  align-self: center;
  background-color: var(--bg-tertiary);
  border-radius: 10px;
  padding: 20px;
  max-width: 800px;
  width: 100%;
  margin-bottom: 40px;
}

.message-content {
  padding: 10px 15px;
}

.message-content h2 {
  font-size: 1.5rem;
  margin-bottom: 10px;
}

.message-content p {
  margin-bottom: 10px;
}

.message-content ul {
  padding-left: 20px;
  margin-bottom: 10px;
}

.message-content pre {
  background-color: var(--bg-tertiary);
  padding: 10px;
  border-radius: 6px;
  overflow-x: auto;
  margin-bottom: 10px;
  font-family: monospace;
}

.message-content code {
  font-family: monospace;
  background-color: var(--bg-tertiary);
  padding: 2px 4px;
  border-radius: 4px;
}

.input-container {
  padding: 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.input-area {
  display: flex;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 10px;
  background-color: var(--bg-color);
  box-shadow: 0 2px 5px var(--shadow-color);
  width: 100%;
  max-width: 800px;
}

.input-area textarea {
  flex: 1;
  border: none;
  outline: none;
  resize: none;
  background-color: transparent;
  color: var(--text-color);
  font-family: var(--font-family);
  font-size: 14px;
  padding: 0;
  max-height: 200px;
}

.send-btn {
  background-color: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  padding: 5px;
  margin-left: 10px;
  border-radius: 50%;
  transition: background-color 0.2s;
}

.send-btn:hover {
  background-color: var(--bg-tertiary);
}

.input-actions {
  display: flex;
  align-items: center;
  margin-top: 10px;
  padding: 0 5px;
  width: 100%;
  max-width: 800px;
}

.upload-btn {
  background-color: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 5px;
  border-radius: 50%;
  transition: all 0.2s;
}

.upload-btn:hover {
  color: var(--primary-color);
  background-color: var(--bg-tertiary);
}

/* 示例代码区域 */
.examples-container {
  display: flex;
  align-items: center;
  margin-left: 15px;
  flex: 1;
}

.examples-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-right: 10px;
}

.examples-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.example-btn {
  padding: 6px 12px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 13px;
  color: var(--text-color);
  cursor: pointer;
  transition: all 0.2s;
}

.example-btn:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--primary-color);
  color: var(--primary-color);
}

@media (max-width: 600px) {
  .input-actions {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .examples-container {
    margin-left: 0;
    margin-top: 10px;
    width: 100%;
  }
}

/* 模型选择下拉菜单 */
.model-dropdown {
  position: absolute;
  top: 60px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  width: 300px;
  box-shadow: 0 5px 15px var(--shadow-color);
  z-index: 100;
  display: none;
}

/* 侧边栏展开时模型下拉菜单位置调整 */
.app-container:not(.sidebar-collapsed) .model-dropdown {
  left: calc(50% + 130px);
}

.model-dropdown.show {
  display: block;
}

.model-option {
  padding: 12px 15px;
  cursor: pointer;
  transition: background-color 0.2s;
}

.model-option:hover {
  background-color: var(--bg-tertiary);
}

.model-option.selected {
  background-color: var(--bg-tertiary);
}

.model-name {
  font-weight: 500;
  margin-bottom: 3px;
}

.model-description {
  font-size: 12px;
  color: var(--text-secondary);
}

/* 文件上传对话框 */
.upload-dialog {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  display: none;
}

.upload-dialog.show {
  display: flex;
}

.dialog-content {
  background-color: var(--bg-color);
  border-radius: 10px;
  width: 500px;
  max-width: 90%;
  box-shadow: 0 5px 20px var(--shadow-color);
}

.dialog-header {
  padding: 15px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.close-dialog-btn {
  background-color: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 5px;
  border-radius: 50%;
  transition: all 0.2s;
}

.close-dialog-btn:hover {
  color: var(--text-color);
  background-color: var(--bg-tertiary);
}

.dialog-body {
  padding: 20px;
}

.upload-area {
  border: 2px dashed var(--border-color);
  border-radius: 8px;
  padding: 30px;
  text-align: center;
  transition: border-color 0.2s;
}

.upload-area:hover {
  border-color: var(--primary-color);
}

.upload-area svg {
  margin-bottom: 15px;
  color: var(--text-secondary);
}

.upload-area p {
  margin-bottom: 15px;
  color: var(--text-secondary);
}

.upload-area input[type="file"] {
  display: none;
}

.upload-file-btn {
  padding: 8px 15px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-color);
  cursor: pointer;
  font-size: 14px;
  transition: all 0.2s;
}

.upload-file-btn:hover {
  background-color: var(--border-color);
}

.dialog-footer {
  padding: 15px 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.cancel-upload-btn, .confirm-upload-btn {
  padding: 8px 15px;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.cancel-upload-btn {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-color);
}

.cancel-upload-btn:hover {
  background-color: var(--border-color);
}

.confirm-upload-btn {
  background-color: var(--primary-color);
  border: 1px solid var(--primary-color);
  color: white;
}

.confirm-upload-btn:hover {
  background-color: var(--primary-hover);
}

.confirm-upload-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .sidebar {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 150;
    box-shadow: 5px 0 15px var(--shadow-color);
  }
  
  .app-container.sidebar-collapsed .sidebar {
    transform: translateX(-100%);
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .message {
    max-width: 90%;
  }
}

/* 加载动画 */
.typing-indicator {
  display: inline-flex;
  align-items: center;
  padding: 10px 15px;
}

.typing-indicator span {
  height: 8px;
  width: 8px;
  background-color: var(--text-secondary);
  border-radius: 50%;
  display: inline-block;
  margin-right: 5px;
  animation: bounce 1.3s linear infinite;
}

.typing-indicator span:nth-child(2) {
  animation-delay: 0.15s;
}

.typing-indicator span:nth-child(3) {
  animation-delay: 0.3s;
  margin-right: 0;
}

@keyframes bounce {
  0%, 60%, 100% {
    transform: translateY(0);
  }
  30% {
    transform: translateY(-4px);
  }
}

/* 思维链消息样式 */
.reasoning-message {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.reasoning-content, .answer-content {
  padding: 16px;
  border-radius: 8px;
  background-color: var(--bg-secondary);
}

.reasoning-content {
  border-left: 4px solid var(--accent-color);
}

.answer-content {
  border-left: 4px solid var(--primary-color);
}

.reasoning-label, .answer-label {
  font-weight: bold;
  margin-bottom: 8px;
  color: var(--text-secondary);
}

/* 错误消息样式 */
.error-message {
  background-color: rgba(239, 68, 68, 0.1);
  border-left: 4px solid #ef4444;
  color: #ef4444;
}