:root {
  --bg: #f5f7fa;
  --card-bg: #ffffff;
  --border: #e5e7eb;
  --border-light: #f3f4f6;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --text: #111827;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --sidebar-width: 260px;
  --ai-panel-width: 320px;
  --radius-card: 12px;
  --radius-pill: 999px;
  --shadow: 0 1px 3px rgba(0,0,0,0.04);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  height: 100vh;
  overflow: hidden;
}

.app { display: flex; flex-direction: column; height: 100vh; }

.topbar {
  height: 56px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 32px;
  flex-shrink: 0;
}

.logo { font-weight: 700; font-size: 18px; color: var(--primary); }

.nav { display: flex; gap: 24px; }
.nav a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 14px;
  padding: 4px 0;
  cursor: pointer;
}
.nav a.active, .nav a:hover { color: var(--primary); border-bottom: 2px solid var(--primary); }

.user { margin-left: auto; font-size: 14px; color: var(--text-secondary); }

.main {
  display: flex;
  flex: 1;
  overflow: hidden;
}

.panel { display: none !important; }
.panel.active { display: flex !important; }

.panel-container {
  flex: 1;
  background: var(--card-bg);
  margin: 16px;
  border-radius: var(--radius-card);
  overflow-y: auto;
  padding: 24px;
  box-shadow: var(--shadow);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.panel-header h2 { margin: 0; font-size: 18px; font-weight: 600; }
.stats { font-size: 13px; color: var(--text-muted); }

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.data-table th {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 2px solid var(--border);
  color: var(--text-muted);
  font-weight: 500;
  font-size: 12px;
  text-transform: uppercase;
}

.data-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

.data-table tr:hover td { background: #f8fafc; }

.badge.status-open { background: #dbeafe; color: #1e40af; padding: 2px 8px; border-radius: 4px; font-size: 12px; }
.badge.status-closed { background: #f1f5f9; color: var(--text-secondary); padding: 2px 8px; border-radius: 4px; font-size: 12px; }
.badge.pri-normal { background: #f1f5f9; color: var(--text-secondary); padding: 2px 8px; border-radius: 4px; font-size: 12px; }
.badge.pri-high { background: #fef3c7; color: #92400e; padding: 2px 8px; border-radius: 4px; font-size: 12px; }
.badge.pri-urgent { background: #fee2e2; color: #991b1b; padding: 2px 8px; border-radius: 4px; font-size: 12px; }

.kb-search-bar, .kb-toolbar {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.kb-toolbar input {
  flex: 1;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 14px;
  background: var(--card-bg);
}

.kb-toolbar input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(59,130,246,0.1); }

.kb-toolbar select {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 14px;
  min-width: 130px;
  background: var(--card-bg);
}

.kb-entry-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 10px;
  cursor: pointer;
  transition: border-color 0.15s;
}

.kb-entry-card:hover { border-color: var(--primary); }

.kb-entry-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.kb-entry-cat {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  background: #eff6ff;
  color: var(--primary);
}

.kb-entry-content {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 8px;
}

.kb-batch-bar {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 10px 14px;
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 12px;
  font-size: 13px;
}

.kb-batch-bar label { cursor: pointer; display: flex; align-items: center; gap: 4px; }

.kb-entry-checkbox { width: 18px; height: 18px; cursor: pointer; margin-top: 1px; flex-shrink: 0; }

.kb-entry-footer {
  display: flex;
  gap: 16px;
  font-size: 11px;
  color: var(--text-muted);
}

.kb-result-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 10px;
  background: #fafafa;
}

.kb-result-score {
  font-size: 11px;
  color: var(--primary);
  margin-bottom: 6px;
  font-weight: 500;
}

.kb-result-card .source {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 8px;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.stat-card {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px;
  text-align: center;
}

.stat-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary);
}

.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 6px;
}

.empty-state {
  text-align: center;
  color: var(--text-muted);
  padding: 60px 20px;
}

.empty-state p { margin: 4px 0; }

.quick-demo {
  padding: 12px;
  border-top: 1px solid var(--border);
}

.quick-demo button {
  width: 100%;
  padding: 10px;
  font-size: 13px;
}

.session-list {
  width: var(--sidebar-width);
  background: var(--card-bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
}

.session-header {
  padding: 12px;
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--border);
}

.search {
  flex: 1;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 13px;
  background: var(--card-bg);
}

#newSessionBtn {
  width: 32px;
  border: none;
  background: var(--primary);
  color: white;
  border-radius: 6px;
  cursor: pointer;
  font-size: 18px;
}

.tabs {
  display: flex;
  padding: 8px;
  gap: 6px;
  border-bottom: 1px solid var(--border);
}

.tab {
  flex: 1;
  border: none;
  background: transparent;
  padding: 6px;
  border-radius: 4px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
}

.tab.active { background: #eff6ff; color: var(--primary); font-weight: 500; }

.list {
  flex: 1;
  overflow-y: auto;
  list-style: none;
  margin: 0;
  padding: 0;
}

.session-item {
  padding: 12px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.15s;
}

.session-item:hover, .session-item.active { background: #f8fafc; }

.session-item .title {
  font-size: 14px;
  font-weight: 500;
  display: flex;
  justify-content: space-between;
}

.session-item .meta {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

.session-item .badge {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--border-light);
  color: var(--text-secondary);
}

.chat-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--bg);
}

.chat-header {
  height: 56px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  font-weight: 500;
}

.status { font-size: 12px; color: var(--text-muted); }

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.message {
  max-width: 80%;
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.6;
}

.message.customer { align-self: flex-start; background: white; border: 1px solid var(--border); }
.message.agent { align-self: flex-end; background: #dbeafe; }
.message.ai { align-self: flex-start; background: #f0fdf4; border: 1px solid #bbf7d0; }

.message .role-label {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.input-area {
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  padding: 16px 20px;
}

.input-area textarea {
  width: 100%;
  height: 72px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  font-size: 14px;
  resize: none;
  background: var(--card-bg);
}

.input-area textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(59,130,246,0.1); }

.input-actions {
  display: flex;
  gap: 12px;
  margin-top: 10px;
  justify-content: flex-end;
}

button {
  border: none;
  padding: 8px 18px;
  border-radius: 6px;
  background: var(--primary);
  color: white;
  font-size: 14px;
  cursor: pointer;
}

button:hover { background: var(--primary-hover); }
button.secondary { background: #f1f5f9; color: var(--text); border: 1px solid var(--border); }
button.secondary:hover { background: #e2e8f0; }

.ai-panel {
  width: var(--ai-panel-width);
  background: var(--card-bg);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.panel-title {
  height: 56px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 16px;
  font-weight: 600;
}

.panel-section {
  padding: 16px;
  border-bottom: 1px solid var(--border);
}

.panel-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.profile p { margin: 4px 0; font-size: 13px; color: var(--text); }

#aiAnswers { display: flex; flex-direction: column; gap: 10px; }

.ai-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  font-size: 13px;
  background: #fafafa;
  cursor: pointer;
}

.ai-card:hover { border-color: var(--primary); }

.ai-card .score {
  display: inline-block;
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  margin-bottom: 6px;
}

.score.high { background: #dcfce7; color: #166534; }
.score.mid { background: #fef3c7; color: #92400e; }
.score.low { background: #f1f5f9; color: var(--text-muted); }

.ai-card .source { font-size: 11px; color: var(--text-muted); margin-top: 6px; }
.ai-card .actions { margin-top: 8px; }
.ai-card .actions button { padding: 4px 10px; font-size: 12px; }

.quick-actions { display: flex; flex-direction: column; gap: 8px; }
.quick-actions button { background: #f8fafc; color: var(--text); border: 1px solid var(--border); text-align: left; }
.quick-actions button:hover { background: #eff6ff; }

.hidden { display: none !important; }

.modal {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal-content {
  background: var(--card-bg);
  border-radius: var(--radius-card);
  width: 420px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.modal-content h3 { margin: 0 0 8px; font-size: 16px; font-weight: 600; }
.modal-content label { font-size: 13px; color: var(--text-secondary); }
.modal-content input, .modal-content select, .modal-content textarea {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 14px;
  background: var(--card-bg);
}
.modal-content textarea { min-height: 80px; }
.modal-content input:focus, .modal-content select:focus, .modal-content textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.1);
}
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 10px; }

/* ===== 双模式UI样式 ===== */

/* 模式切换开关 */
.mode-switch {
  display: inline-flex;
  background: #f1f5f9;
  border-radius: 999px;
  padding: 3px;
  margin-right: 16px;
}
.mode-switch button {
  padding: 6px 16px;
  border: none;
  background: transparent;
  border-radius: 999px;
  font-size: 13px;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.25s;
  font-weight: 500;
}
.mode-switch button.active {
  background: white;
  color: var(--primary);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* 状态徽章 */
.status-badge {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.status-badge::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
}
.status-badge.online { background: #ecfdf5; color: var(--success); }
.status-badge.ai-auto { background: #eff6ff; color: var(--primary); }
.status-badge.ai-assist { background: #fffbeb; color: var(--warning); }
.status-badge.pending { background: #f1f5f9; color: var(--text-muted); }
.status-badge.ongoing { background: #dbeafe; color: #1e40af; }
.status-badge.completed { background: #f1f5f9; color: var(--text-secondary); }

/* 聊天头部 */
.chat-header-left { display: flex; align-items: center; gap: 12px; }
.chat-avatar {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 600; font-size: 13px;
  flex-shrink: 0;
}
.chat-user-info h4 { font-size: 14px; margin: 0; font-weight: 600; }
.chat-user-info span { font-size: 12px; color: var(--text-muted); }
.chat-header-right { display: flex; align-items: center; gap: 10px; }

.header-action-btn {
  padding: 6px 14px;
  border: 1px solid var(--border);
  background: white;
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.25s;
}
.header-action-btn:hover { border-color: var(--primary); color: var(--primary); }
.header-action-btn.danger:hover { border-color: var(--danger); color: var(--danger); }

/* 输入区 */
.input-actions { justify-content: space-between; align-items: center; }
.input-actions-right { display: flex; gap: 10px; }
.input-hint { font-size: 12px; color: var(--text-muted); }
button.small { padding: 6px 12px; font-size: 12px; }
button.danger { background: var(--danger); }
button.danger:hover { background: #dc2626; }

/* AI自主模式监看横幅 */
.ai-monitor-bar {
  background: linear-gradient(90deg, #dbeafe 0%, #eff6ff 100%);
  border-bottom: 1px solid #bfdbfe;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: #1e40af;
  font-weight: 500;
  flex-shrink: 0;
}
.monitor-left { display: flex; align-items: center; gap: 10px; }
.pulse-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--primary);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(59,130,246,0.5); }
  70% { box-shadow: 0 0 0 10px rgba(59,130,246,0); }
  100% { box-shadow: 0 0 0 0 rgba(59,130,246,0); }
}

/* 消息样式增强 */
.message { display: flex; gap: 10px; }
.message.customer { flex-direction: row; }
.message.agent { flex-direction: row-reverse; }
.message.ai-suggest { flex-direction: row; max-width: 90%; }

.message .msg-avatar {
  width: 30px; height: 30px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 600; font-size: 11px;
  flex-shrink: 0;
}
.message.customer .msg-avatar { background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%); }
.message.agent .msg-avatar { background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%); }
.message.ai-suggest .msg-avatar { background: linear-gradient(135deg, #10b981 0%, #059669 100%); }

.msg-content { display: flex; flex-direction: column; gap: 4px; }
.message.agent .msg-content { align-items: flex-end; }

.msg-bubble {
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.6;
  word-break: break-word;
}
.message.customer .msg-bubble { background: white; border: 1px solid var(--border); border-top-left-radius: 4px; }
.message.agent .msg-bubble { background: #dbeafe; color: #1e3a8a; border-top-right-radius: 4px; }
.message.ai .msg-bubble { background: #f0fdf4; border: 1px solid #bbf7d0; border-top-left-radius: 4px; }
.msg-bubble.ai-sent::after {
  content: 'AI代答';
  display: inline-block;
  margin-left: 8px;
  font-size: 10px;
  padding: 1px 5px;
  background: rgba(255,255,255,0.5);
  color: #1e40af;
  border-radius: 3px;
  font-weight: 500;
}
.msg-time { font-size: 11px; color: var(--text-muted); }

/* AI建议气泡（辅助模式，消息流内嵌） */
.ai-suggest-bubble {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: 12px;
  border-top-left-radius: 4px;
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: #166534;
}
.suggest-label {
  font-size: 11px;
  color: #15803d;
  font-weight: 600;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.suggest-source {
  margin-top: 8px;
  padding: 6px 8px;
  background: rgba(255,255,255,0.6);
  border-radius: 6px;
  font-size: 11px;
  color: #166534;
}
.suggest-actions {
  margin-top: 10px;
  display: flex;
  gap: 8px;
}
.suggest-actions button {
  padding: 5px 12px;
  font-size: 12px;
  border-radius: 6px;
  cursor: pointer;
  border: none;
  font-weight: 500;
}
.btn-adopt { background: var(--success) !important; color: white !important; }
.btn-adopt:hover { background: #059669 !important; }
.btn-edit { background: white !important; color: var(--text) !important; border: 1px solid var(--border) !important; }
.btn-edit:hover { background: #f8fafc !important; }
.btn-dislike { background: transparent !important; color: var(--text-muted) !important; }
.btn-dislike:hover { color: var(--danger) !important; }

/* 打字指示器 */
.typing-indicator {
  display: flex;
  gap: 4px;
  padding: 8px 12px;
  align-items: center;
}
.typing-indicator span {
  width: 7px; height: 7px;
  background: var(--primary);
  border-radius: 50%;
  animation: typing 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; }
@keyframes typing {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40% { transform: scale(1); opacity: 1; }
}

/* 消息反馈按钮 */
.msg-feedback {
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity 0.2s;
}
.message:hover .msg-feedback { opacity: 1; }
.msg-feedback button {
  background: transparent;
  color: var(--text-muted);
  font-size: 12px;
  padding: 2px 6px;
  border-radius: 4px;
  border: none;
  cursor: pointer;
}
.msg-feedback button:hover { background: #f3f4f6; color: var(--text); }

/* 会话列表模式标签 */
.mode-tag {
  font-size: 10px;
  padding: 1px 5px;
  border-radius: 3px;
  font-weight: 500;
}
.mode-tag.assist { background: #fef3c7; color: #92400e; }
.mode-tag.auto { background: #dbeafe; color: #1e40af; }

/* 客户画像卡片 */
.profile-card {
  background: #f8fafc;
  border-radius: 8px;
  padding: 12px;
}
.profile-row {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  font-size: 13px;
  border-bottom: 1px solid var(--border-light);
}
.profile-row:last-child { border-bottom: none; }
.profile-row .label { color: var(--text-secondary); }
.profile-row .value { color: var(--text); font-weight: 500; }

/* 满意度评分 */
.satisfaction-footer {
  background: #f8fafc;
  border-top: 1px solid var(--border);
  padding: 12px 20px;
  text-align: center;
  font-size: 13px;
  color: var(--text-secondary);
}
.satisfaction-stars {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 8px;
  font-size: 22px;
  cursor: pointer;
}
.satisfaction-stars span { transition: all 0.25s; color: #d1d5db; }
.satisfaction-stars span:hover, .satisfaction-stars span.active { color: #fbbf24; transform: scale(1.1); }

/* 输入区禁用状态 */
.input-area.disabled { opacity: 0.6; pointer-events: none; }
.input-area.disabled textarea { background: #f8fafc; }

/* 低置信度警告 */
.low-confidence-banner {
  background: #fffbeb;
  border: 1px solid #fde68a;
  color: #92400e;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 12px;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
/* 模式提示条 */
.demo-notice {
  background: #fffbeb;
  border-bottom: 1px solid #fde68a;
  padding: 10px 20px;
  font-size: 13px;
  color: #92400e;
  display: flex;
  align-items: center;
  gap: 10px;
}
.demo-notice strong {
  color: #b45309;
}