ForcePilot/web/src/components/MessageInputComponent.vue

<template>
  <div class="input-box" :class="customClasses" @click="focusInput">
    <div class="top-slot">
      <slot name="top"></slot>
    </div>

    <div class="expand-options" v-if="hasOptionsLeft">
      <a-popover
        v-model:open="optionsExpanded"
        placement="bottomLeft"
        trigger="click"
        :overlay-inner-style="{ padding: '4px' }"
      >
        <template #content>
          <slot name="options-left">
            <div class="no-options">没有配置 options</div>
          </slot>
        </template>
        <a-button type="text" class="expand-btn">
          <template #icon>
            <Paperclip :size="16" :class="{ rotated: optionsExpanded }" />
          </template>
        </a-button>
      </a-popover>
      <slot name="actions-left"></slot>
    </div>

    <textarea
      ref="inputRef"
      class="user-input"
      :value="inputValue"
      @keydown="handleKeyPress"
      @keyup="handleKeyUp"
      @input="handleInput"
      @focus="focusInput"
      @click="handleTextareaClick"
      :placeholder="placeholder"
      :disabled="disabled"
    />

    <!-- @ 提及选择弹窗 -->
    <div v-if="mentionPopupVisible" ref="mentionDropdownRef" class="mention-dropdown-wrapper">
      <div class="mention-popup">
        <!-- 文件列表 -->
        <div v-if="mentionItems.files.length > 0 || showFileSearchPrompt" class="mention-group">
          <div class="mention-group-title">文件</div>
          <div v-if="showFileSearchPrompt" class="mention-search-placeholder">
            输入相关内容以搜索文件
          </div>
          <template v-else>
            <div
              v-for="(item, index) in mentionItems.files"
              :key="'file-' + item.value"
              :class="['mention-item', 'file-item', { active: isItemSelected('file', index) }]"
              @click="insertMention(item)"
            >
              <div class="file-info-left">
                <component
                  :is="item.is_dir ? FolderFilled : getFileIcon(item.label)"
                  :style="{ color: item.is_dir ? '#ffa940' : getFileIconColor(item.label) }"
                  class="file-type-icon"
                />
                <span class="file-name" :title="item.label">
                  <span
                    v-for="(part, pIdx) in splitTextByQuery(item.label, mentionQuery)"
                    :key="pIdx"
                    :class="{ 'query-match': part.isMatch }"
                    >{{ part.text }}</span
                  >
                </span>
              </div>
              <span
                v-if="formatMentionPath(item.description)"
                class="file-parent-dir"
                :title="formatMentionPath(item.description)"
              >
                <span
                  v-for="(part, pIdx) in splitTextByQuery(
                    formatMentionPath(item.description),
                    mentionQuery
                  )"
                  :key="pIdx"
                  :class="{ 'query-match': part.isMatch }"
                  >{{ part.text }}</span
                >
              </span>
            </div>
          </template>
        </div>

        <!-- 知识库列表 -->
        <div v-if="mentionItems.knowledgeBases.length > 0" class="mention-group">
          <div class="mention-group-title">知识库</div>
          <div
            v-for="(item, index) in mentionItems.knowledgeBases"
            :key="'kb-' + item.value"
            :class="['mention-item', { active: isItemSelected('knowledge', index) }]"
            @click="insertMention(item)"
          >
            <span
              v-for="(part, pIdx) in splitTextByQuery(item.label, mentionQuery)"
              :key="pIdx"
              :class="{ 'query-match': part.isMatch }"
              >{{ part.text }}</span
            >
          </div>
        </div>

        <!-- MCP 列表 -->
        <div v-if="mentionItems.mcps.length > 0" class="mention-group">
          <div class="mention-group-title">MCP</div>
          <div
            v-for="(item, index) in mentionItems.mcps"
            :key="'mcp-' + item.value"
            :class="['mention-item', { active: isItemSelected('mcp', index) }]"
            @click="insertMention(item)"
          >
            <span
              v-for="(part, pIdx) in splitTextByQuery(item.label, mentionQuery)"
              :key="pIdx"
              :class="{ 'query-match': part.isMatch }"
              >{{ part.text }}</span
            >
          </div>
        </div>

        <!-- Skills 列表 -->
        <div v-if="mentionItems.skills.length > 0" class="mention-group">
          <div class="mention-group-title">Skills</div>
          <div
            v-for="(item, index) in mentionItems.skills"
            :key="'skill-' + item.value"
            :class="['mention-item', { active: isItemSelected('skill', index) }]"
            @click="insertMention(item)"
          >
            <span
              v-for="(part, pIdx) in splitTextByQuery(item.label, mentionQuery)"
              :key="pIdx"
              :class="{ 'query-match': part.isMatch }"
              >{{ part.text }}</span
            >
          </div>
        </div>

        <!-- Subagents 列表 -->
        <div v-if="mentionItems.subagents.length > 0" class="mention-group">
          <div class="mention-group-title">Subagents</div>
          <div
            v-for="(item, index) in mentionItems.subagents"
            :key="'subagent-' + item.value"
            :class="['mention-item', { active: isItemSelected('subagent', index) }]"
            @click="insertMention(item)"
          >
            <span
              v-for="(part, pIdx) in splitTextByQuery(item.label, mentionQuery)"
              :key="pIdx"
              :class="{ 'query-match': part.isMatch }"
              >{{ part.text }}</span
            >
          </div>
        </div>

        <!-- 无结果 -->
        <div v-if="!hasAnyItems" class="mention-empty">暂无可引用的项</div>
      </div>
    </div>

    <div class="send-button-container">
      <slot name="actions-right"></slot>
      <a-tooltip :title="isLoading ? '停止回答' : ''">
        <a-button
          @click="handleSendOrStop"
          :disabled="sendButtonDisabled"
          type="link"
          class="send-button"
        >
          <template #icon>
            <component :is="getIcon" class="send-btn" />
          </template>
        </a-button>
      </a-tooltip>
    </div>

    <div class="bottom-slot">
      <slot name="bottom"></slot>
    </div>
  </div>
</template>

<script setup>
import { ref, computed, onMounted, nextTick, watch, onBeforeUnmount, useSlots } from 'vue'
import { SendOutlined, ArrowUpOutlined, PauseOutlined, FolderFilled } from '@ant-design/icons-vue'
import { Paperclip } from 'lucide-vue-next'
import { searchMentionFiles } from '@/apis/mention_api'
import { getFileIcon, getFileIconColor } from '@/utils/file_utils'

// 点击外部关闭下拉框
const mentionDropdownRef = ref(null)
const closeMentionPopup = (e) => {
  if (!mentionPopupVisible.value) return
  if (inputRef.value?.contains(e.target)) return
  if (mentionDropdownRef.value?.contains(e.target)) return
  mentionPopupVisible.value = false
}

const inputRef = ref(null)
const optionsExpanded = ref(false)
// 用于防抖的定时器
const debounceTimer = ref(null)
const props = defineProps({
  modelValue: {
    type: String,
    default: ''
  },
  placeholder: {
    type: String,
    default: '输入问题...'
  },
  isLoading: {
    type: Boolean,
    default: false
  },
  disabled: {
    type: Boolean,
    default: false
  },
  sendButtonDisabled: {
    type: Boolean,
    default: false
  },
  autoSize: {
    type: Object,
    default: () => ({ minRows: 2, maxRows: 6 })
  },
  sendIcon: {
    type: String,
    default: 'ArrowUpOutlined'
  },
  customClasses: {
    type: Object,
    default: () => ({})
  },
  mention: {
    type: Object,
    default: () => null
  },
  threadId: {
    type: String,
    default: ''
  }
})

const emit = defineEmits(['update:modelValue', 'send', 'keydown'])
const slots = useSlots()

// @ 提及功能是否启用
const mentionEnabled = computed(() => {
  return !!props.mention
})

const mentionTypePrefixMap = {
  file: 'file',
  knowledge: 'knowledge',
  mcp: 'mcp',
  skill: 'skill',
  subagent: 'subagent'
}

const formatMentionToken = (type, value) => {
  const prefix = mentionTypePrefixMap[type] || type
  return `@${prefix}:${value}`
}

const formatMentionPath = (path) => {
  if (!path) return ''
  let cleanPath = path.replace(/^\/?home\/gem\/user-data\/?/, '')
  if (cleanPath.startsWith('/')) {
    cleanPath = cleanPath.substring(1)
  }
  // 如果以 / 结尾，说明它是一个目录，我们先去掉末尾的 / 之后再算父目录
  let isDir = cleanPath.endsWith('/')
  let pathForParent = isDir ? cleanPath.substring(0, cleanPath.length - 1) : cleanPath

  const lastSlashIndex = pathForParent.lastIndexOf('/')
  if (lastSlashIndex === -1) {
    return ''
  }
  return pathForParent.substring(0, lastSlashIndex + 1)
}

// 高性能且安全的关键字切片高亮解析函数 (100% 防御 XSS，避开危险的 v-html)
const splitTextByQuery = (text, query) => {
  if (!text) return []
  if (!query) return [{ text, isMatch: false }]

  const escapedQuery = query.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&')
  const regex = new RegExp(`(${escapedQuery})`, 'gi')
  const parts = text.split(regex)

  return parts.map((part) => ({
    text: part,
    isMatch: part.toLowerCase() === query.toLowerCase()
  }))
}

// 检测是否在 @ 触发位置
const checkMentionTrigger = (textarea) => {
  if (!textarea || !mentionEnabled.value) return false

  const cursorPos = textarea.selectionStart
  const textBeforeCursor = inputValue.value.slice(0, cursorPos)

  // 检查是否以 @ 结尾（刚输入 @）或 @ 后有内容
  const atMatch = textBeforeCursor.match(/@(\S*)$/)
  if (atMatch) {
    mentionQuery.value = atMatch[1]
    mentionPopupVisible.value = true
    mentionSelectedIndex.value = 0
    updateMentionItems(mentionQuery.value)
    return true
  }

  mentionPopupVisible.value = false
  return false
}

// 更新提及候选项
const updateMentionItems = (query = '') => {
  if (!props.mention) {
    mentionItems.value = { files: [], knowledgeBases: [], mcps: [], skills: [], subagents: [] }
    return
  }

  const lowerQuery = query.toLowerCase()
  const { files = [], knowledgeBases = [], mcps = [], skills = [], subagents = [] } = props.mention

  const filterItems = (list) =>
    list.filter((item) => {
      const searchTexts = [
        item.label,
        item.value,
        item.description,
        item.tokenLabel,
        item.type,
        mentionTypePrefixMap[item.type]
      ]
      return searchTexts.some((text) =>
        String(text || '')
          .toLowerCase()
          .includes(lowerQuery)
      )
    })

  // 本地临时文件/附件候选项过滤
  const localFileItems = files.map((f) => {
    const path = f.path || ''
    const fileName = path.split('/').pop() || path
    return {
      value: path,
      label: fileName,
      type: 'file',
      insertValue: path || fileName,
      tokenLabel: formatMentionToken('file', fileName),
      description: path
    }
  })

  const filteredLocalFiles = query ? filterItems(localFileItems) : []

  const knowledgeItems = knowledgeBases.map((kb) => {
    const kbName = kb.name || ''
    return {
      value: kbName,
      label: kbName,
      type: 'knowledge',
      insertValue: kbName,
      tokenLabel: formatMentionToken('knowledge', kbName),
      description: kb.db_id
    }
  })

  const mcpItems = mcps.map((m) => {
    const mcpName = m.name || ''
    return {
      value: mcpName,
      label: mcpName,
      type: 'mcp',
      insertValue: mcpName,
      tokenLabel: formatMentionToken('mcp', mcpName),
      description: m.description || ''
    }
  })

  const skillItems = skills.map((skill) => {
    const skillValue = skill.slug || skill.name || skill.id || ''
    return {
      value: skillValue,
      label: skillValue,
      type: 'skill',
      insertValue: skillValue,
      tokenLabel: formatMentionToken('skill', skillValue),
      description: skill.description || ''
    }
  })

  const subagentItems = subagents.map((subagent) => {
    const subagentValue = subagent.id || subagent.value || subagent.name || ''
    const subagentLabel = subagent.name || subagent.label || subagentValue
    return {
      value: subagentValue,
      label: subagentLabel,
      type: 'subagent',
      insertValue: subagentValue,
      tokenLabel: formatMentionToken('subagent', subagentValue),
      description: subagent.description || ''
    }
  })

  // 初始化设置 mentionItems 状态（使用前端已有的本地过滤结果，瞬间更新，达到零卡顿）
  mentionItems.value = {
    files: filteredLocalFiles,
    knowledgeBases: filterItems(knowledgeItems),
    mcps: filterItems(mcpItems),
    skills: filterItems(skillItems),
    subagents: filterItems(subagentItems)
  }

  // NOTE: 如果是尚未开始对话的全新会话，此时 threadId 为空，允许使用临时占位 ID 检索用户全局的工作区文件
  if (query) {
    const activeThreadId = props.threadId || 'new_thread_placeholder'
    clearTimeout(mentionSearchTimer)
    mentionSearchTimer = setTimeout(async () => {
      // 物理中断之前的未完成 HTTP 请求
      if (activeAbortController) {
        activeAbortController.abort()
      }
      activeAbortController = new AbortController()

      searchRequestId.value++
      const currentId = searchRequestId.value

      try {
        const responseData = await searchMentionFiles(
          activeThreadId,
          query,
          activeAbortController.signal
        )

        // 竞态校验锁，确保是当前最新响应
        if (currentId === searchRequestId.value && Array.isArray(responseData)) {
          const remoteFileItems = responseData.map((f) => {
            const path = f.path || ''
            const fileName = f.name || path.split('/').pop() || path
            return {
              value: path,
              label: fileName,
              type: 'file',
              insertValue: path || fileName,
              tokenLabel: formatMentionToken('file', fileName),
              description: path,
              is_dir: f.is_dir
            }
          })

          // 合并本地临时文件与后端高匹配度文件（使用 Set 进行去重，防止重复展示）
          const seenValues = new Set(filteredLocalFiles.map((x) => x.value))
          const mergedFiles = [...filteredLocalFiles]

          remoteFileItems.forEach((item) => {
            if (!seenValues.has(item.value)) {
              seenValues.add(item.value)
              mergedFiles.push(item)
            }
          })

          mentionItems.value.files = mergedFiles
        }
      } catch (error) {
        // 主动取消的请求我们不作为错误抛出
        if (error.name !== 'AbortError') {
          console.error('Mention search error:', error)
        }
      } finally {
        if (currentId === searchRequestId.value) {
          activeAbortController = null
        }
      }
    }, 250) // 250ms 经典防抖时间
  }
}

// 检查项是否被选中
const isItemSelected = (type, index) => {
  if (mentionSelectedIndex.value < 0) return false

  const filesLen = mentionItems.value.files.length
  const kbLen = mentionItems.value.knowledgeBases.length
  const mcpLen = mentionItems.value.mcps.length
  const skillsLen = mentionItems.value.skills.length

  if (type === 'file') {
    return mentionSelectedIndex.value === index
  } else if (type === 'knowledge') {
    return mentionSelectedIndex.value === filesLen + index
  } else if (type === 'mcp') {
    return mentionSelectedIndex.value === filesLen + kbLen + index
  } else if (type === 'skill') {
    return mentionSelectedIndex.value === filesLen + kbLen + mcpLen + index
  } else {
    return mentionSelectedIndex.value === filesLen + kbLen + mcpLen + skillsLen + index
  }
}

// 是否有任何候选项
const showFileSearchPrompt = computed(() => {
  return Boolean(props.mention?.files?.length) && !mentionQuery.value
})

const hasAnyItems = computed(() => {
  const items = mentionItems.value
  return (
    showFileSearchPrompt.value ||
    items.files.length > 0 ||
    items.knowledgeBases.length > 0 ||
    items.mcps.length > 0 ||
    items.skills.length > 0 ||
    items.subagents.length > 0
  )
})

const insertMention = (item) => {
  if (!inputRef.value) return

  const textarea = inputRef.value
  const cursorPos = textarea.selectionStart
  const textBeforeCursor = inputValue.value.slice(0, cursorPos)
  const mentionValue = item.insertValue || item.value
  const mentionText = formatMentionToken(item.type, mentionValue)

  // 移除 @ 及后面的查询内容，插入完整的提及项
  const newTextBefore = textBeforeCursor.replace(/@(\S*)$/, `${mentionText} `)
  const textAfterCursor = inputValue.value.slice(cursorPos)

  const newValue = newTextBefore + textAfterCursor
  emit('update:modelValue', newValue)

  // 重置光标位置到插入内容之后
  nextTick(() => {
    const newCursorPos = newTextBefore.length
    textarea.setSelectionRange(newCursorPos, newCursorPos)
    textarea.focus()
  })

  mentionPopupVisible.value = false
  mentionQuery.value = ''
}

// 滚动到选中项
const scrollToItem = (index) => {
  nextTick(() => {
    const popup = mentionDropdownRef.value?.querySelector('.mention-popup')
    if (!popup) return

    // 查找所有 mention-item 元素
    const items = popup.querySelectorAll('.mention-item')
    const selectedItem = items[index]

    if (selectedItem) {
      // 检查元素是否在可视区域内
      const popupRect = popup.getBoundingClientRect()
      const itemRect = selectedItem.getBoundingClientRect()

      if (itemRect.bottom > popupRect.bottom) {
        selectedItem.scrollIntoView({ block: 'nearest', behavior: 'smooth' })
      } else if (itemRect.top < popupRect.top) {
        selectedItem.scrollIntoView({ block: 'nearest', behavior: 'smooth' })
      }
    }
  })
}

// 处理键盘导航
const handleMentionNavigation = (e) => {
  if (!mentionPopupVisible.value) return

  const allItems = [
    ...mentionItems.value.files,
    ...mentionItems.value.knowledgeBases,
    ...mentionItems.value.mcps,
    ...mentionItems.value.skills,
    ...mentionItems.value.subagents
  ]

  const total = allItems.length
  if (total === 0) return

  if (e.key === 'ArrowDown') {
    e.preventDefault()
    mentionSelectedIndex.value = (mentionSelectedIndex.value + 1) % total
    scrollToItem(mentionSelectedIndex.value)
  } else if (e.key === 'ArrowUp') {
    e.preventDefault()
    mentionSelectedIndex.value = (mentionSelectedIndex.value - 1 + total) % total
    scrollToItem(mentionSelectedIndex.value)
  } else if (e.key === 'Enter' || e.key === 'Tab') {
    if (mentionSelectedIndex.value >= 0 && mentionSelectedIndex.value < total) {
      e.preventDefault()
      insertMention(allItems[mentionSelectedIndex.value])
    }
  } else if (e.key === 'Escape') {
    e.preventDefault()
    mentionPopupVisible.value = false
  }
}

const hasOptionsLeft = computed(() => {
  const slot = slots['options-left']
  if (!slot) {
    return false
  }
  const renderedNodes = slot()
  return Boolean(renderedNodes && renderedNodes.length)
})

// 图标映射
const iconComponents = {
  SendOutlined: SendOutlined,
  ArrowUpOutlined: ArrowUpOutlined,
  PauseOutlined: PauseOutlined
}

// 根据传入的图标名动态获取组件
const getIcon = computed(() => {
  if (props.isLoading) {
    return PauseOutlined
  }
  return iconComponents[props.sendIcon] || ArrowUpOutlined
})

// 创建本地引用以进行双向绑定
const inputValue = computed({
  get: () => props.modelValue,
  set: (val) => emit('update:modelValue', val)
})

// 处理键盘事件
const handleKeyPress = (e) => {
  // @ 提及键盘导航
  if (mentionPopupVisible.value) {
    if (['ArrowDown', 'ArrowUp', 'Enter', 'Tab', 'Escape'].includes(e.key)) {
      handleMentionNavigation(e)
      return
    }
  }

  emit('keydown', e)
}

// 检测 @ 触发
const handleKeyUp = (e) => {
  if (e.key === '@' && mentionEnabled.value) {
    nextTick(() => {
      checkMentionTrigger(e.target)
    })
  }
}

// 处理输入事件
const handleInput = (e) => {
  const value = e.target.value
  emit('update:modelValue', value)

  // 只要开启了提及功能，在任何输入事件时都使用正则表达式动态检测是否唤醒或更新弹出框
  if (mentionEnabled.value) {
    nextTick(() => {
      checkMentionTrigger(e.target)
    })
  }
}

// 处理发送按钮点击
const handleSendOrStop = () => {
  emit('send')
}

// @ 提及功能状态
const mentionPopupVisible = ref(false)
const mentionQuery = ref('')
const mentionItems = ref({ files: [], knowledgeBases: [], mcps: [], skills: [], subagents: [] })
const mentionSelectedIndex = ref(0)
const searchRequestId = ref(0)
let activeAbortController = null
let mentionSearchTimer = null

const adjustTextareaHeight = () => {
  if (!inputRef.value) {
    return
  }

  const textarea = inputRef.value
  textarea.style.height = 'auto'
  textarea.style.height = `${textarea.scrollHeight}px`
}

// 聚焦输入框
const focusInput = () => {
  if (inputRef.value && !props.disabled) {
    inputRef.value.focus()
    // 聚焦回来时，如果开启了提及，自动检测当前光标位置是否处于 @提及 范围，是则重新升起弹框
    if (mentionEnabled.value) {
      nextTick(() => {
        checkMentionTrigger(inputRef.value)
      })
    }
  }
}

// 处理输入框点击事件，自适应检测光标是否落入 @提及 范围内以唤醒或更新弹窗
const handleTextareaClick = (e) => {
  if (mentionEnabled.value) {
    nextTick(() => {
      checkMentionTrigger(e.target)
    })
  }
}

// 监听输入值变化
watch(inputValue, () => {
  if (debounceTimer.value) {
    clearTimeout(debounceTimer.value)
  }
  debounceTimer.value = setTimeout(() => {
    nextTick(() => {
      adjustTextareaHeight()
    })
  }, 100)
})

onMounted(() => {
  document.addEventListener('click', closeMentionPopup)
  nextTick(() => {
    if (inputRef.value) {
      adjustTextareaHeight()
      inputRef.value.focus()
    }
  })
})

// 组件卸载时清除定时器和事件监听器
onBeforeUnmount(() => {
  if (debounceTimer.value) {
    clearTimeout(debounceTimer.value)
  }
  if (mentionSearchTimer) {
    clearTimeout(mentionSearchTimer)
  }
  if (activeAbortController) {
    activeAbortController.abort()
  }
  document.removeEventListener('click', closeMentionPopup)
})

// 公开方法供父组件调用
defineExpose({
  focus: () => inputRef.value?.focus(),
  closeOptions: () => {
    optionsExpanded.value = false
  }
})
</script>

<style lang="less" scoped>
.input-box {
  display: grid;
  width: 100%;
  margin: 0 auto;
  border: 1px solid var(--gray-150);
  border-radius: 0.8rem;
  box-shadow: 0 2px 8px var(--shadow-1);
  transition: all 0.3s ease;
  background: var(--gray-0);
  gap: 0px;
  position: relative;

  /* Default: Multi-line layout with top/bottom slots */
  padding: 0.8rem 0.75rem 0.6rem 0.75rem;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto auto;
  grid-template-areas:
    'top top'
    'input input'
    'options send';

  .top-slot {
    display: flex;
    grid-area: top;
  }

  .expand-options {
    grid-area: options;
    justify-self: start;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .user-input {
    grid-area: input;
  }

  .send-button-container {
    grid-area: send;
    justify-self: end;
  }

  .bottom-slot {
    grid-column: 1 / -1;
  }

  // &:focus-within {
  //   border-color: var(--main-500);
  //   background: var(--gray-0);
  //   box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  // }
}

.expand-options {
  grid-area: options;
  display: flex;
  align-items: center;
}

.user-input {
  grid-area: input;
  width: 100%;
  padding: 0;
  background-color: transparent;
  border: none;
  margin: 0;
  margin-bottom: 0.5rem;
  color: var(--gray-1000);
  font-size: 15px;
  outline: none;
  resize: none;
  line-height: 1.5;
  font-family: inherit;
  min-height: 44px; /* Default min-height for multi-line */
  max-height: 200px;

  &:focus {
    outline: none;
    box-shadow: none;
  }

  &::placeholder {
    color: var(--gray-400);
  }
}

.send-button-container {
  grid-area: send;
  display: flex;
  align-items: center;
  justify-content: center;
}

.expand-btn {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-600);
  transition: all 0.2s ease;
  border: 1px solid transparent;
  background-color: transparent;

  &:hover {
    color: var(--main-color);
  }

  &:active {
    color: var(--main-color);
    // 移除点击缩小效果
  }

  .anticon {
    font-size: 14px;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    &.rotated {
      transform: rotate(45deg);
    }
  }
}

// Popover 选项样式
.popover-options {
  min-width: 160px;
  max-width: 200px;
  padding: 4px;

  .no-options {
    color: var(--gray-500);
    font-size: 12px;
    text-align: center;
    padding: 12px 8px;
  }

  :deep(.opt-item) {
    border-radius: 8px;
    padding: 6px 10px;
    cursor: pointer;
    font-size: 12px;
    color: var(--gray-700);
    transition: all 0.2s ease;
    margin: 2px;
    display: inline-block;

    &:hover {
      background-color: var(--main-10);
      color: var(--main-600);
    }

    &.active {
      color: var(--main-600);
      background-color: var(--main-10);
    }
  }
}

.send-button.ant-btn-icon-only {
  height: 32px;
  width: 32px;
  cursor: pointer;
  background-color: var(--main-500);
  border-radius: 50%;
  border: none;
  transition: all 0.2s ease;
  box-shadow: 0 2px 6px var(--shadow-2);
  color: var(--gray-0);
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;

  &:hover {
    background-color: var(--main-color);
    box-shadow: 0 4px 8px var(--shadow-3);
    color: var(--gray-0);
  }

  &:active {
    box-shadow: 0 2px 4px var(--shadow-2);
    // 移除点击动画效果
  }

  &:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
  }
}

@media (max-width: 520px) {
  .input-box {
    border-radius: 15px;
    padding: 0.625rem 0.875rem;
  }
}

// @ 提及弹窗样式
.mention-dropdown-wrapper {
  position: absolute;
  bottom: 100%;
  left: 0;
  right: 0;
  margin-bottom: 8px;
  z-index: 1000;
}

.mention-popup {
  width: 100%;
  max-height: 280px;
  overflow-y: auto;
  background: var(--gray-0);
  border-radius: 8px;
  box-shadow:
    0 -4px 16px rgba(0, 0, 0, 0.08),
    0 4px 16px rgba(0, 0, 0, 0.12);
  border: 1px solid var(--gray-200);

  .mention-group {
    margin-bottom: 4px;

    &:last-child {
      margin-bottom: 0;
    }
  }

  .mention-group-title {
    font-size: 12px;
    color: var(--gray-500);
    padding: 4px 8px;
    display: flex;
    align-items: center;
    gap: 4px;
    border-bottom: 1px solid var(--gray-100);
    margin-bottom: 2px;
  }

  .mention-item {
    padding: 4px 8px;
    cursor: pointer;
    font-size: 13px;
    color: var(--gray-700);
    transition: all 0.15s ease;
    margin: 1px 4px;
    border-radius: 4px;

    &.file-item {
      display: flex;
      flex-direction: row;
      align-items: center;
      justify-content: flex-start;
      gap: 0;
      padding: 6px 10px;

      .file-info-left {
        display: flex;
        align-items: center;
        gap: 8px;
        flex-shrink: 1;
        min-width: 0;

        .file-type-icon {
          font-size: 15px;
          flex-shrink: 0;
          display: flex;
          align-items: center;
        }

        .file-name {
          font-weight: 500;
          color: var(--gray-800);
          overflow: hidden;
          text-overflow: ellipsis;
          white-space: nowrap;
          font-size: 13px;
        }
      }

      .file-parent-dir {
        font-size: 11px;
        color: var(--gray-400);
        margin-left: 8px;
        flex-shrink: 1;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        transition: color 0.15s ease;
      }
    }

    &:hover,
    &.active {
      background-color: var(--main-10);
      color: var(--main-600);

      &.file-item {
        .file-info-left .file-name {
          color: var(--main-600);
        }
        .file-parent-dir {
          color: var(--main-400);
        }
      }
    }
  }

  .query-match {
    color: #fa8c16; /* 明亮温润的金橘色 */
    font-weight: 700;
  }

  .mention-empty {
    text-align: center;
    padding: 12px 8px;
    color: var(--gray-400);
    font-size: 13px;
  }

  .mention-search-placeholder {
    padding: 4px 8px;
    color: var(--gray-400);
    font-size: 13px;
  }
}
</style>