<template>
  <div class="not-found">
    <div class="container">
      <div class="not-found-content">
        <div class="error-image">
          <n-icon size="120" color="#ccc">
            <AlertCircleOutline />
          </n-icon>
        </div>
        
        <h1>404</h1>
        <h2>页面未找到</h2>
        <p>抱歉，您访问的页面不存在或已被移除。</p>
        
        <div class="actions">
          <n-button type="primary" size="large" @click="$router.push('/')">
            返回首页
          </n-button>
          <n-button size="large" @click="$router.back()">
            返回上页
          </n-button>
        </div>
        
        <div class="suggestions">
          <h3>您可能想要：</h3>
          <ul>
            <li><a href="/">浏览首页</a></li>
            <li><a href="/courses">查看课程</a></li>
            <li><a href="/login">登录账户</a></li>
          </ul>
        </div>
      </div>
    </div>
  </div>
</template>

<script setup lang="ts">
import { AlertCircleOutline } from '@vicons/ionicons5'
</script>

<style scoped>
.not-found {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f8f9fa;
}

.not-found-content {
  text-align: center;
  max-width: 500px;
  padding: 40px;
}

.error-image {
  margin-bottom: 32px;
}

h1 {
  font-size: 6rem;
  font-weight: bold;
  color: #18a058;
  margin: 0;
  line-height: 1;
}

h2 {
  font-size: 2rem;
  color: #333;
  margin: 16px 0;
}

p {
  font-size: 1.1rem;
  color: #666;
  margin-bottom: 32px;
  line-height: 1.6;
}

.actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 40px;
}

.suggestions {
  text-align: left;
  background: white;
  padding: 24px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.suggestions h3 {
  margin: 0 0 16px;
  color: #333;
  font-size: 1.2rem;
}

.suggestions ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.suggestions li {
  margin-bottom: 8px;
}

.suggestions a {
  color: #18a058;
  text-decoration: none;
  transition: color 0.3s;
}

.suggestions a:hover {
  color: #0c7a43;
  text-decoration: underline;
}

@media (max-width: 768px) {
  .not-found-content {
    padding: 20px;
  }
  
  h1 {
    font-size: 4rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .actions {
    flex-direction: column;
    align-items: center;
  }
}
</style>
