/* 专家支持中心页面样式 - 重新设计 */
.expert-support-page {
  display: grid;
  grid-template-columns: 360px 1fr;
  height: calc(100vh - 80px);
  background: #f5f7fa;
  gap: 1px;
  overflow: hidden;
}

/* ===================
   左侧对话记录区域
   =================== */

.conversation-sidebar {
  background: white;
  border-right: 1px solid #e5e7eb;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sidebar-header {
  padding: 24px 20px;
  border-bottom: 1px solid #f0f1f3;
  background: #fafbfc;
  flex-shrink: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.sidebar-title {
  font-size: 18px;
  font-weight: 600;
  color: #111827;
  margin: 0;
  line-height: 1.4;
  flex: 1;
}

/* 新建对话按钮 */
.new-conversation-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #3b82f6;
  color: white;
  border: none;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 150ms ease;
  flex-shrink: 0;
}

.new-conversation-btn:hover {
  background: #2563eb;
  transform: translateY(-1px);
}

.new-conversation-btn .btn-icon {
  font-size: 14px;
}

.new-conversation-btn .btn-text {
  white-space: nowrap;
}

/* 对话分组 */
.conversation-groups {
  flex: 1;
  overflow-y: auto;
}

.conversation-group {
  border-bottom: 1px solid #f3f4f6;
}

.conversation-group:last-child {
  border-bottom: none;
}

.group-header {
  padding: 16px 20px 8px 20px;
  background: #fafbfc;
  border-bottom: 1px solid #f0f1f3;
}

.group-title {
  font-size: 14px;
  font-weight: 600;
  color: #6b7280;
  margin: 0;
  line-height: 1.4;
}

/* 对话列表 */
.conversation-list {
  padding: 0;
}

.conversation-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 20px;
  cursor: pointer;
  transition: all 150ms ease;
  border-bottom: 1px solid #f3f4f6;
  position: relative;
}

.conversation-item:hover {
  background: #f8fafc;
}

.conversation-item.selected {
  background: #eff6ff;
  border-left: 4px solid #3b82f6;
}

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

/* 对话标题行 */
.conversation-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 6px;
}

.conversation-title {
  font-size: 14px;
  font-weight: 600;
  color: #111827;
  margin: 0;
  line-height: 1.3;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

/* 非活跃提醒 */
.inactivity-alert {
  flex-shrink: 0;
}

.alert-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: #ef4444;
  border-radius: 50%;
  animation: pulse-red 2s infinite;
}

@keyframes pulse-red {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.2);
  }
}

.conversation-item.has-alert {
  border-left: 4px solid #ef4444;
}

.conversation-item.has-alert:hover {
  background: #fef2f2;
}

.conversation-preview {
  font-size: 13px;
  color: #6b7280;
  margin: 0 0 8px 0;
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.conversation-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
}

.conversation-time {
  font-size: 11px;
  color: #9ca3af;
  flex-shrink: 0;
}

.conversation-status {
  font-size: 10px;
  padding: 4px 8px;
  border-radius: 12px;
  font-weight: 500;
  flex-shrink: 0;
  text-align: center;
}

.status-resolved {
  background: #f0fdf4;
  color: #166534;
}

.status-in-progress {
  background: #fffbeb;
  color: #92400e;
}

.status-pending {
  background: #fef2f2;
  color: #991b1b;
}

/* ===================
   右侧问答界面
   =================== */

.chat-interface {
  background: white;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* 顶部信息栏 */
.chat-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 24px 32px;
  flex-shrink: 0;
}

.header-info {
  margin-bottom: 16px;
}

.service-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.2);
  padding: 8px 16px;
  border-radius: 20px;
  margin-bottom: 12px;
  backdrop-filter: blur(8px);
}

.badge-icon {
  font-size: 16px;
}

.badge-text {
  font-size: 13px;
  font-weight: 500;
}

.service-title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 4px;
  line-height: 1.3;
}

.service-subtitle {
  font-size: 14px;
  opacity: 0.9;
  line-height: 1.4;
}

.service-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.service-tag {
  background: rgba(255, 255, 255, 0.15);
  padding: 6px 12px;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 500;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* 对话内容区域 */
.chat-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.chat-title-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 32px;
  border-bottom: 1px solid #e5e7eb;
  background: #fafbfc;
  flex-shrink: 0;
}

.active-conversation-title {
  font-size: 16px;
  font-weight: 600;
  color: #111827;
  margin: 0;
  line-height: 1.4;
}

.transfer-expert-btn {
  background: #3b82f6;
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 150ms ease;
}

.transfer-expert-btn:hover {
  background: #2563eb;
  transform: translateY(-1px);
}

/* 消息容器 */
.messages-container {
  flex: 1;
  overflow-y: auto;
  padding: 24px 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.message {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.user-message {
  flex-direction: row-reverse;
}

.message-avatar {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  background: #f3f4f6;
  border-radius: 50%;
  border: 2px solid white;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.message-bubble {
  max-width: 70%;
  padding: 12px 16px;
  border-radius: 16px;
  position: relative;
}

.user-message .message-bubble {
  background: #3b82f6;
  color: white;
  border-bottom-right-radius: 4px;
}

.expert-message .message-bubble {
  background: #f8fafc;
  color: #111827;
  border: 1px solid #e5e7eb;
  border-bottom-left-radius: 4px;
}

.expert-name {
  font-size: 12px;
  font-weight: 600;
  color: #6b7280;
  margin-bottom: 4px;
}

.user-message .expert-name {
  color: rgba(255, 255, 255, 0.8);
}

.message-text {
  font-size: 14px;
  line-height: 1.5;
  margin-bottom: 4px;
}

.user-message .message-text {
  color: white;
}

.message-time {
  font-size: 11px;
  opacity: 0.7;
  text-align: right;
}

.user-message .message-time {
  color: rgba(255, 255, 255, 0.8);
}

.expert-message .message-time {
  color: #9ca3af;
}

/* 空状态 */
.no-conversation-selected {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #6b7280;
  padding: 40px;
}

.placeholder-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.placeholder-text {
  font-size: 16px;
  font-weight: 500;
  margin-bottom: 8px;
  color: #374151;
}

.placeholder-subtitle {
  font-size: 14px;
  color: #9ca3af;
}

/* 输入区域 */
.chat-input-area {
  border-top: 1px solid #e5e7eb;
  background: #fafbfc;
  padding: 20px 32px;
  flex-shrink: 0;
}

.input-container {
  display: flex;
  gap: 12px;
  align-items: flex-end;
}

.message-input {
  flex: 1;
  background: white;
  border: 1px solid #d1d5db;
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 14px;
  line-height: 1.5;
  resize: none;
  transition: all 150ms ease;
  min-height: 48px;
}

.message-input:focus {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.send-button {
  background: #3b82f6;
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 150ms ease;
  height: 48px;
  flex-shrink: 0;
}

.send-button:hover:not(:disabled) {
  background: #2563eb;
  transform: translateY(-1px);
}

.send-button:disabled {
  background: #d1d5db;
  color: #9ca3af;
  cursor: not-allowed;
  transform: none;
}

.input-tips {
  margin-top: 8px;
  text-align: center;
}

.tip-text {
  font-size: 12px;
  color: #9ca3af;
}

/* ===================
   响应式设计
   =================== */

@media (max-width: 1024px) {
  .expert-support-page {
    grid-template-columns: 300px 1fr;
  }
  
  .conversation-sidebar {
    width: 300px;
  }
  
  .sidebar-header {
    padding: 20px 16px;
  }
  
  .new-conversation-btn .btn-text {
    display: none;
  }
  
  .new-conversation-btn {
    padding: 8px;
    border-radius: 6px;
  }
  
  .chat-header {
    padding: 20px 24px;
  }
  
  .messages-container {
    padding: 20px 24px;
  }
  
  .chat-input-area {
    padding: 16px 24px;
  }
}

@media (max-width: 768px) {
  .expert-support-page {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
  }
  
  .conversation-sidebar {
    height: 200px;
    width: 100%;
    border-right: none;
    border-bottom: 1px solid #e5e7eb;
  }
  
  .sidebar-header {
    padding: 16px;
    flex-direction: column;
    gap: 8px;
    align-items: stretch;
  }
  
  .new-conversation-btn {
    width: 100%;
    justify-content: center;
  }
  
  .new-conversation-btn .btn-text {
    display: inline;
  }
  
     .conversation-groups {
     overflow-x: auto;
   }
   
   .conversation-list {
     display: flex;
     gap: 8px;
     padding: 8px 16px;
   }
  
  .conversation-item {
    min-width: 280px;
    flex-shrink: 0;
    border-bottom: none;
    border-radius: 8px;
    border: 1px solid #e5e7eb;
    margin-bottom: 0;
  }
  
  .chat-header {
    padding: 16px 20px;
  }
  
  .service-title {
    font-size: 20px;
  }
  
  .messages-container {
    padding: 16px 20px;
  }
  
  .chat-input-area {
    padding: 16px 20px;
  }
  
  .message-bubble {
    max-width: 85%;
  }
  
  .chat-title-bar {
    padding: 16px 20px;
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }
}

 @media (max-width: 480px) {
  
  .chat-header {
    padding: 12px 16px;
  }
  
  .service-title {
    font-size: 18px;
  }
  
  .service-subtitle {
    font-size: 13px;
  }
  
  .messages-container {
    padding: 12px 16px;
  }
  
  .chat-input-area {
    padding: 12px 16px;
  }
  
  .input-container {
    flex-direction: column;
    gap: 8px;
  }
  
  .send-button {
    width: 100%;
  }
}

/* ===================
   问题解决确认模态框
   =================== */

.resolution-modal-overlay {
  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: 1000;
  backdrop-filter: blur(4px);
}

.resolution-modal {
  background: white;
  border-radius: 12px;
  width: 90%;
  max-width: 480px;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  overflow: hidden;
  animation: modalAppear 0.2s ease-out;
}

@keyframes modalAppear {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(-10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid #e5e7eb;
  background: #fafbfc;
}

.modal-title {
  font-size: 18px;
  font-weight: 600;
  color: #111827;
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: 24px;
  color: #6b7280;
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  transition: all 150ms ease;
}

.modal-close:hover {
  background: #f3f4f6;
  color: #374151;
}

.modal-content {
  padding: 24px;
  text-align: center;
}

.modal-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.modal-text {
  font-size: 16px;
  line-height: 1.6;
  color: #374151;
  margin: 0;
}

.modal-actions {
  display: flex;
  gap: 12px;
  padding: 20px 24px;
  border-top: 1px solid #e5e7eb;
  background: #fafbfc;
}

.btn-secondary {
  flex: 1;
  background: white;
  color: #374151;
  border: 1px solid #d1d5db;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 150ms ease;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-secondary:hover {
  background: #f9fafb;
  border-color: #9ca3af;
}

.btn-primary {
  flex: 1;
  background: #3b82f6;
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 150ms ease;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-primary:hover {
  background: #2563eb;
  transform: translateY(-1px);
}

/* 响应式模态框 */
@media (max-width: 768px) {
  .resolution-modal {
    width: 95%;
    margin: 0 10px;
  }
  
  .modal-header {
    padding: 16px 20px;
  }
  
  .modal-content {
    padding: 20px;
  }
  
  .modal-actions {
    padding: 16px 20px;
    flex-direction: column;
  }
  
  .btn-secondary,
  .btn-primary {
    width: 100%;
  }
}