src/components/layout/AppTabBar.vue

<template>
  <div 
    class="app-tabbar" 
    v-show="!shouldHideTabbar"
  >
    <div class="tabbar-content">
      <router-link 
        v-for="tab in tabs" 
        :key="tab.name"
        :to="tab.path"
        class="tab-item"
        :class="{ active: currentRoute === tab.name }"
        @click="handleTabClick(tab)"
      >
        <i :class="tab.icon" class="tab-icon"></i>
        <span class="tab-label">{{ tab.label }}</span>
      </router-link>
    </div>
  </div>
</template>

<script setup>
import { computed } from 'vue'
import { useRoute } from 'vue-router'

const route = useRoute()

const tabs = [
  {
    name: 'Home',
    path: '/home',
    label: '首页',
    icon: 'fas fa-home'
  },
  {
    name: 'Favorites',
    path: '/favorites',
    label: '我喜欢',
    icon: 'fas fa-heart'
  },
  {
    name: 'Playlists',
    path: '/playlists',
    label: '歌单',
    icon: 'fas fa-music'
  },
  {
    name: 'PlayQueue',
    path: '/play-queue',
    label: '播放列表',
    icon: 'fas fa-list'
  }
]

const currentRoute = computed(() => route.name)

// 判断是否应该隐藏tabbar
const shouldHideTabbar = computed(() => {
  return route.meta?.fullScreen || false
})

const handleTabClick = (tab) => {
  // 触觉反馈（如果支持）
  if (navigator.vibrate) {
    navigator.vibrate(10)
  }
}
</script>

<style scoped>
.app-tabbar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-strong);
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
  z-index: 1000;
}

/* iOS PWA 模式底部间距 */
@supports (-webkit-touch-callout: none) {
  @media all and (display-mode: standalone) {
    .app-tabbar {
      padding-bottom: 20px;
    }
  }
}

.tabbar-content {
  display: flex;
  height: var(--tabbar-height);
  max-width: 480px;
  margin: 0 auto;
}

.tab-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: var(--text-disabled);
  transition: var(--transition-fast);
  min-height: var(--touch-target);
  position: relative;
  padding: 4px;
}

.tab-item:hover,
.tab-item.active {
  color: var(--primary-color);
}

.tab-item.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 2px;
  background: var(--primary-color);
  border-radius: 1px;
  /* 使用与进度条不同的视觉效果 */
  box-shadow: 0 -1px 4px var(--glow-color);
  opacity: 0.9;
}

.tab-icon {
  font-size: 20px;
  margin-bottom: 2px;
}

.tab-label {
  font-size: 10px;
  font-weight: 500;
  line-height: 1;
}

/* 响应式适配 */
@media (max-width: 320px) {
  .tab-label {
    font-size: 9px;
  }
  
  .tab-icon {
    font-size: 18px;
  }
  
  .app-tabbar {
    border-top: 1px solid var(--border-strong);
  }
}

/* PC端隐藏底部标签栏 */
@media (min-width: 1024px) {
  .app-tabbar {
    display: none;
  }
}
</style>