<template>
  <div style="text-align: center; width: 100%">
    <el-empty description=" ">
      <h2 data-text="404"> 404 </h2>
      <h4>啊呀~页面不存在!</h4>
      <p>您可以先检查网址，然后重新输入或给我们反馈问题。</p>
      <el-button type="primary" plain round @click="goHome"> 返回首页 </el-button>
      <el-button type="primary" plain round @click="goLogin"> 重新登录 </el-button>
      <el-button type="primary" round @click="$router.go(-1)"> 返回上一页 </el-button>
    </el-empty>
  </div>
</template>

<script setup>
  import { useRouter } from 'vue-router'
  import { removeAll } from '@/utils/local'

  const router = useRouter()

  function goHome() {
    location.href = '#/'
  }
  function goLogin() {
    removeAll()
    router.push('/login')
  }
</script>

<style scoped>
  h4 {
    font-size: 20px;
    color: #333;
  }
  p {
    font-size: 12px;
    color: #999;
    margin: 20px 0;
  }
  h2 {
    font-size: 70px;
    position: relative;
    letter-spacing: 1px;
    z-index: 3;
  }
  h2:after {
    content: attr(data-text);
    position: absolute;
    left: 2px;
    text-shadow: -1px 0 red;
    top: 0;
    color: #000;
    background: #f6f8f9;
    overflow: hidden;
    clip: rect(0, 900px, 0, 0);
    width: 100%;
    animation: noise-anim 2s infinite linear alternate-reverse;
  }
  h2:before {
    content: attr(data-text);
    position: absolute;
    left: -2px;
    text-shadow: 1px 0 blue;
    top: 0;
    color: #000;
    background: #f6f8f9;
    overflow: hidden;
    clip: rect(0, 900px, 0, 0);
    width: 100%;
    animation: noise-anim-2 3s infinite linear alternate-reverse;
  }
  @keyframes noise-anim {
    0% {
      clip: rect(77px, 9999px, 51px, 0);
    }
    5% {
      clip: rect(25px, 9999px, 30px, 0);
    }
    10% {
      clip: rect(70px, 9999px, 75px, 0);
    }
    15% {
      clip: rect(94px, 9999px, 96px, 0);
    }
    20% {
      clip: rect(24px, 9999px, 11px, 0);
    }
    25% {
      clip: rect(12px, 9999px, 53px, 0);
    }
    30% {
      clip: rect(79px, 9999px, 54px, 0);
    }
    35% {
      clip: rect(70px, 9999px, 93px, 0);
    }
    40% {
      clip: rect(73px, 9999px, 86px, 0);
    }
    45% {
      clip: rect(100px, 9999px, 96px, 0);
    }
    50% {
      clip: rect(5px, 9999px, 68px, 0);
    }
    55% {
      clip: rect(6px, 9999px, 16px, 0);
    }
    60% {
      clip: rect(4px, 9999px, 60px, 0);
    }
    65% {
      clip: rect(86px, 9999px, 74px, 0);
    }
    70% {
      clip: rect(6px, 9999px, 53px, 0);
    }
    75% {
      clip: rect(41px, 9999px, 35px, 0);
    }
    80% {
      clip: rect(70px, 9999px, 60px, 0);
    }
    85% {
      clip: rect(52px, 9999px, 66px, 0);
    }
    90% {
      clip: rect(18px, 9999px, 16px, 0);
    }
    95% {
      clip: rect(71px, 9999px, 80px, 0);
    }
    100% {
      clip: rect(69px, 9999px, 51px, 0);
    }
  }
  @keyframes noise-anim-2 {
    0% {
      clip: rect(20px, 9999px, 7px, 0);
    }
    5% {
      clip: rect(51px, 9999px, 73px, 0);
    }
    10% {
      clip: rect(33px, 9999px, 21px, 0);
    }
    15% {
      clip: rect(60px, 9999px, 48px, 0);
    }
    20% {
      clip: rect(86px, 9999px, 48px, 0);
    }
    25% {
      clip: rect(32px, 9999px, 50px, 0);
    }
    30% {
      clip: rect(59px, 9999px, 50px, 0);
    }
    35% {
      clip: rect(80px, 9999px, 96px, 0);
    }
    40% {
      clip: rect(7px, 9999px, 39px, 0);
    }
    45% {
      clip: rect(62px, 9999px, 90px, 0);
    }
    50% {
      clip: rect(85px, 9999px, 84px, 0);
    }
    55% {
      clip: rect(89px, 9999px, 51px, 0);
    }
    60% {
      clip: rect(88px, 9999px, 50px, 0);
    }
    65% {
      clip: rect(8px, 9999px, 82px, 0);
    }
    70% {
      clip: rect(80px, 9999px, 23px, 0);
    }
    75% {
      clip: rect(22px, 9999px, 52px, 0);
    }
    80% {
      clip: rect(96px, 9999px, 44px, 0);
    }
    85% {
      clip: rect(84px, 9999px, 27px, 0);
    }
    90% {
      clip: rect(32px, 9999px, 71px, 0);
    }
    95% {
      clip: rect(85px, 9999px, 35px, 0);
    }
    100% {
      clip: rect(24px, 9999px, 23px, 0);
    }
  }
</style>
