<template>
  <header class="topbar" :class="{ 'light-theme': isLightTheme }">
    <!-- 左侧品牌 -->
    <router-link to="/" class="brand">
      <div class="brand-mark"></div>
      <div class="brand-text">科技大脑智慧服务平台</div>
    </router-link>

    <!-- 右侧整条胶囊导航条 -->
    <div class="nav-wrap">
      <div class="nav-list" role="navigation" aria-label="主导航">
        <router-link to="/" class="nav-item" :class="{ 'is-active': $route.name === 'home' }">首页</router-link>
        <router-link to="/news-policy" class="nav-item" :class="{ 'is-active': $route.name === 'news-policy' }">新闻政策</router-link>
        <router-link to="/smart-qa" class="nav-item" :class="{ 'is-active': $route.name === 'smart-qa' }">智慧问答</router-link>
        <router-link to="/tech-resources" class="nav-item" :class="{ 'is-active': $route.name === 'tech-resources' }">科技资源</router-link>
        <router-link to="/talent-profile" class="nav-item" :class="{ 'is-active': $route.name === 'talent-profile' }">人才画像</router-link>
        <router-link to="/login" class="nav-item" :class="{ 'is-active': $route.name === 'login' }">登录</router-link>
      </div>
    </div>
  </header>
</template>

<script setup lang="ts">
import { computed } from 'vue'
import { useRoute } from 'vue-router'

const route = useRoute()

// 判断是否为浅色主题页面（除了首页和登录页）
const isLightTheme = computed(() => {
  return route.name !== 'home' && route.name !== 'login'
})
</script>

<style scoped>
/* ===== 顶栏 ===== */
/* 顶部整行：左右两端布局 */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 24px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  pointer-events: auto;
  background: rgba(8, 26, 43, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(130, 196, 255, 0.15);
  transition: all 0.3s ease;
}

.topbar.light-theme {
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* 左侧品牌区 */
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  color: #cfe8ff;
  text-decoration: none;
}

.light-theme .brand {
  color: #2c3e50;
}

.brand-mark {
  width: 24px;
  height: 6px;
  border-radius: 4px;
  background: #49b0ff;
  box-shadow: 0 0 12px #49b0ff;
}

.brand-text {
  font-size: 20px;
  letter-spacing: 0.5px;
  opacity: 0.95;
}

.light-theme .brand-text {
  opacity: 1;
}

/* 右侧胶囊导航条：纯 div，flex 布局 */
.nav-wrap {
  display: flex;
  align-items: flex-end;
  gap: 16px;
  padding: 10px 10px 10px 18px;
  min-width: 720px; /* 让条看起来更长一些，可按需调整 */
  backdrop-filter: blur(2px);
  cursor: pointer;
}

/* 菜单区：居中对齐、等间距 */
.nav-list {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 42px;
}

/* 菜单项：router-link 样式，hover 高亮，active 发光 */
.nav-item {
  position: relative;
  padding: 6px 2px;
  color: #ffffff;
  font-size: 16px;
  letter-spacing: 0.5px;
  transition: color 0.2s ease, text-shadow 0.2s ease, transform 0.2s ease;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}

.nav-item:hover {
  color: #d7ecff;
  text-shadow: 0 0 10px rgba(144, 210, 255, 0.5);
  cursor: pointer;
}

.nav-item.is-active {
  color: #8fd3ff;
  font-weight: 600;
  text-shadow: 0 0 10px rgba(150, 210, 255, 0.85);
}

/* 浅色主题样式 */
.light-theme .nav-item {
  color: #606266;
  text-shadow: none;
}

.light-theme .nav-item:hover {
  color: #409eff;
  text-shadow: none;
}

.light-theme .nav-item.is-active {
  color: #409eff;
  font-weight: 600;
  text-shadow: none;
}
</style>