/* ========================================
   AI 侧边栏样式
   ======================================== */

/* --- 头部 --- */
.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-light);
}

.sidebar-header-left {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.sidebar-header-left svg {
  width: 20px;
  height: 20px;
  color: var(--color-accent);
}

.sidebar-header-left span {
  font-weight: 600;
  font-size: var(--text-md);
  color: var(--color-text-primary);
}

.sidebar-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  color: var(--color-text-tertiary);
  transition: all var(--transition-fast);
}

.sidebar-close:hover {
  background: rgba(255, 255, 255, 0.6);
  color: var(--color-text-primary);
}

.sidebar-close svg {
  width: 18px;
  height: 18px;
}

/* --- 模型选择器 --- */
.model-selector {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-light);
}

.model-selector-inner {
  display: flex;
  background: var(--color-bg-secondary);
  border-radius: 2px;
  padding: 3px;
  gap: 2px;
  border: 1px solid var(--color-border-light);
}

.model-option {
  flex: 1;
  padding: var(--space-2) var(--space-3);
  text-align: center;
  border-radius: 2px;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.model-option:hover {
  color: var(--color-text-primary);
}

.model-option.active {
  background: var(--color-white);
  color: var(--color-text-primary);
  box-shadow: none;
}

/* --- 对话列表 --- */
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.chat-welcome {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  text-align: center;
  padding: var(--space-8);
  gap: var(--space-3);
}

.chat-welcome svg {
  width: 48px;
  height: 48px;
  color: var(--color-accent);
  opacity: 0.6;
}

.chat-welcome h4 {
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--color-text-primary);
  font-family: var(--font-display);
}

.chat-welcome p {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  max-width: 260px;
  line-height: 1.6;
}

/* 快捷操作 */
.quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
  margin-top: var(--space-2);
}

.quick-action-btn {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.quick-action-btn svg {
  width: 14px;
  height: 14px;
}

.quick-action-btn:hover {
  border-color: var(--color-border);
  color: var(--color-text-primary);
  background: rgba(255, 255, 255, 0.9);
}

.quick-action-btn:active {
  transform: scale(0.96);
}

/* 消息气泡 */
.chat-message {
  display: flex;
  gap: var(--space-3);
  animation: fadeInUp 200ms ease;
}

.chat-message-avatar {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: 600;
  margin-top: 2px;
}

.chat-message--user .chat-message-avatar {
  background: rgba(255, 255, 255, 0.82);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.chat-message--ai .chat-message-avatar {
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
}

.chat-message--ai .chat-message-avatar svg {
  width: 16px;
  height: 16px;
}

.chat-message-content {
  flex: 1;
  min-width: 0;
}

.chat-message-sender {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-1);
}

.chat-message-text {
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--color-text-primary);
  word-wrap: break-word;
}

.chat-message-text p {
  margin: 4px 0;
}

.chat-message-text p:first-child {
  margin-top: 0;
}

.chat-message-actions {
  display: flex;
  gap: var(--space-1);
  margin-top: var(--space-2);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.chat-message:hover .chat-message-actions {
  opacity: 1;
}

.msg-action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  color: var(--color-text-tertiary);
  transition: all var(--transition-fast);
}

.msg-action-btn:hover {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.msg-action-btn svg {
  width: 14px;
  height: 14px;
}

/* AI 正在输入 */
.typing-indicator {
  display: flex;
  gap: 4px;
  padding: var(--space-2) 0;
}

.typing-indicator span {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--color-text-tertiary);
  animation: typing-dot 1.2s infinite;
}

.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

/* --- 输入区域 --- */
.chat-input-area {
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-border-light);
}

.chat-input-wrapper {
  display: flex;
  align-items: flex-end;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2) var(--space-3);
  transition: all var(--transition-fast);
  background: var(--color-white);
  gap: var(--space-2);
}

.chat-input-wrapper:focus-within {
  border-color: var(--color-border);
  box-shadow: 0 0 0 1px var(--color-text-primary);
}

.chat-input {
  flex: 1;
  border: none;
  resize: none;
  font-size: var(--text-base);
  line-height: 1.5;
  max-height: 120px;
  min-height: 24px;
  color: var(--color-text-primary);
  background: transparent;
}

.chat-input::placeholder {
  color: var(--color-text-tertiary);
}

.chat-send-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  background: var(--color-text-primary);
  color: var(--color-text-inverse);
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.chat-send-btn:hover {
  background: var(--color-primary-hover);
}

.chat-send-btn:disabled {
  background: var(--color-bg-tertiary);
  color: var(--color-text-tertiary);
  cursor: not-allowed;
}

.chat-send-btn svg {
  width: 18px;
  height: 18px;
}

/* --- 上下文标签 --- */
.context-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2);
  background: rgba(255, 255, 255, 0.9);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 500;
  margin-bottom: var(--space-2);
}

.context-tag svg {
  width: 12px;
  height: 12px;
}

.context-tag-close {
  display: inline-flex;
  cursor: pointer;
  margin-left: 2px;
  opacity: 0.6;
}

.context-tag-close:hover {
  opacity: 1;
}

/* --- 停止生成按钮 --- */
.stop-gen-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  padding: 8px;
  margin-bottom: 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  background: var(--color-white);
  cursor: pointer;
  transition: all var(--transition-fast);
  animation: fadeInUp 150ms ease;
}

.stop-gen-btn:hover {
  border-color: #ef4444;
  color: #ef4444;
  background: #fef2f2;
}

/* --- AI Markdown 内容样式 --- */
.chat-message-text pre {
  background: #1e293b;
  color: #e2e8f0;
  border-radius: 2px;
  padding: 12px 16px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.5;
  margin: 8px 0;
}

.chat-message-text code {
  background: #f1f5f9;
  padding: 1px 5px;
  border-radius: 3px;
  font-size: 13px;
  color: #e11d48;
}

.chat-message-text pre code {
  background: none;
  padding: 0;
  color: inherit;
}

.chat-message-text ul,
.chat-message-text ol {
  padding-left: 20px;
  margin: 6px 0;
}

.chat-message-text li {
  margin: 3px 0;
}

.chat-message-text table {
  border-collapse: collapse;
  width: 100%;
  margin: 8px 0;
  font-size: 13px;
}

.chat-message-text th,
.chat-message-text td {
  border: 1px solid var(--color-border);
  padding: 6px 10px;
  text-align: left;
}

.chat-message-text th {
  background: var(--color-bg-secondary);
  font-weight: 600;
}

.chat-message-text blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: 12px;
  margin: 8px 0;
  color: var(--color-text-secondary);
}

.chat-message-text h1,
.chat-message-text h2,
.chat-message-text h3,
.chat-message-text h4 {
  margin: 12px 0 6px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.chat-message-text h1 { font-size: 18px; }
.chat-message-text h2 { font-size: 16px; }
.chat-message-text h3 { font-size: 15px; }
.chat-message-text h4 { font-size: 14px; }

/* --- 引用标记卡片（选中文字引用） --- */
.context-ref-card {
  background: #fbf5ec;
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: 2px;
  padding: 8px 12px;
  margin-bottom: 8px;
  font-size: 12px;
  line-height: 1.5;
}

.ref-card-header {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 4px;
}

.ref-card-header svg {
  flex-shrink: 0;
}

.ref-card-lines {
  font-variant-numeric: tabular-nums;
}

.ref-card-text {
  color: #475569;
  font-size: 11px;
  line-height: 1.5;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  font-style: italic;
}

/* --- Diff 对比卡片 --- */
.ai-diff-card {
  border: 1px solid var(--color-border);
  border-radius: 2px;
  overflow: hidden;
  background: var(--color-white);
}

.diff-section {
  padding: 10px 14px;
}

.diff-original {
  background: #fef2f2;
  border-bottom: 1px dashed #fecaca;
}

.diff-suggested {
  background: #f0fdf4;
}

.diff-label {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 600;
  margin-bottom: 6px;
}

.diff-original .diff-label {
  color: #dc2626;
}

.diff-suggested .diff-label {
  color: #16a34a;
}

.diff-text {
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-primary);
  white-space: pre-wrap;
  word-break: break-word;
}

.diff-text-small {
  font-size: 12px;
  color: var(--color-text-tertiary);
  line-height: 1.5;
  margin-top: 6px;
  padding: 8px 12px;
  background: var(--color-bg-secondary);
  border-radius: 6px;
  white-space: pre-wrap;
}

.diff-arrow {
  text-align: center;
  padding: 2px 0;
  color: var(--color-text-tertiary);
  font-size: 14px;
  background: var(--color-bg-secondary);
}

.diff-actions {
  display: flex;
  gap: 8px;
  padding: 10px 14px;
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border-light);
}

.diff-btn {
  flex: 1;
  padding: 7px 0;
  border: none;
  border-radius: 2px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.diff-btn-accept {
  background: var(--color-primary);
  color: white;
}

.diff-btn-accept:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 2px 8px rgba(26,115,232,0.3);
}

.diff-btn-reject {
  background: var(--color-white);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border) !important;
}

.diff-btn-reject:hover {
  background: #fef2f2;
  color: #dc2626;
  border-color: #fecaca !important;
}

/* 替换结果状态 */
.diff-result {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 2px;
  font-size: 13px;
  font-weight: 500;
}

.diff-result--success {
  background: #f0fdf4;
  color: #16a34a;
  border: 1px solid #bbf7d0;
}

.diff-result--error {
  background: #fef2f2;
  color: #dc2626;
  border: 1px solid #fecaca;
}

.diff-result--dismissed {
  background: var(--color-bg-secondary);
  color: var(--color-text-tertiary);
  font-style: italic;
  padding: 6px 12px;
  font-size: 12px;
}

/* --- 编辑器选区引用标签（自由提问模式） --- */
.editor-ref-tag {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  margin-bottom: 6px;
  background: #fbf5ec;
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: 2px;
  font-size: 12px;
  color: var(--color-text-secondary);
  animation: fadeInUp 150ms ease;
}

.editor-ref-tag svg {
  flex-shrink: 0;
  color: var(--color-accent);
}

.ref-tag-line {
  font-weight: 600;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.ref-tag-preview {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: #64748b;
  font-style: italic;
}

.ref-tag-close {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 2px;
  font-size: 14px;
  line-height: 1;
  color: var(--color-text-tertiary);
  cursor: pointer;
  transition: all 0.15s;
  border: none;
  background: transparent;
}

.ref-tag-close:hover {
  background: #fee2e2;
  color: #ef4444;
}