<script setup>
import { computed } from 'vue'
import { useRouter } from 'vue-router'
import { useI18n } from '../composables/useI18n'

// 路由
const router = useRouter()

// 国际化
const { t } = useI18n()

// 计算属性
const errorTitle = computed(() => t('error.title'))
const errorDescription = computed(() => t('error.description'))
const goHomeText = computed(() => t('error.back_home'))

// 处理返回首页
const goHome = () => {
  router.push('/')
}
</script>

<template>
  <div class="not-found-page">
    <div class="not-found-container">
      <div class="error-content">
        <!-- 404 数字 -->
        <div class="error-number">
          <span class="number">4</span>
          <span class="number">0</span>
          <span class="number">4</span>
        </div>
        
        <!-- 错误信息 -->
        <div class="error-info">
          <h1 class="error-title">{{ errorTitle }}</h1>
          <p class="error-description">{{ errorDescription }}</p>
        </div>
        
        <!-- 操作按钮 -->
        <div class="error-actions">
          <button class="btn btn-primary" @click="goHome">
            {{ goHomeText }}
          </button>
          <button class="btn btn-secondary" @click="$router.go(-1)">
            返回上一页
          </button>
        </div>
        
        <!-- 帮助信息 -->
        <div class="error-help">
          <p class="help-text">
            如果您认为这是一个错误，请检查URL是否正确或联系我们的技术支持团队。
          </p>
        </div>
      </div>
      
      <!-- 装饰性插图 -->
      <div class="error-visual">
        <div class="illustration-container">
          <div class="floating-shapes">
            <div class="shape shape-1"></div>
            <div class="shape shape-2"></div>
            <div class="shape shape-3"></div>
            <div class="shape shape-4"></div>
            <div class="shape shape-5"></div>
          </div>
          <div class="main-illustration">
            <div class="lost-icon">🔍</div>
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<style scoped>
.not-found-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  padding: var(--spacing-lg);
}

.not-found-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  max-width: var(--container-max-width);
  width: 100%;
  align-items: center;
}

.error-content {
  text-align: center;
}

/* 404 数字 */
.error-number {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.number {
  font-size: 8rem;
  font-weight: 900;
  color: var(--primary-color);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
  line-height: 1;
  display: inline-block;
  animation: float 3s ease-in-out infinite;
}

.number:nth-child(2) {
  animation-delay: 0.1s;
}

.number:nth-child(3) {
  animation-delay: 0.2s;
}

/* 错误信息 */
.error-info {
  margin-bottom: var(--spacing-xl);
}

.error-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 var(--spacing-md) 0;
}

.error-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin: 0 0 var(--spacing-xl) 0;
  line-height: 1.6;
}

/* 操作按钮 */
.error-actions {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.btn {
  padding: var(--spacing-md) var(--spacing-xl);
  border: none;
  border-radius: var(--border-radius-lg);
  font-size: var(--font-size-md);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
}

.btn-primary:hover {
  background-color: var(--primary-color-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--bg-secondary);
  border-color: var(--text-secondary);
  transform: translateY(-2px);
}

/* 帮助信息 */
.error-help {
  max-width: 400px;
  margin: 0 auto;
}

.help-text {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  line-height: 1.5;
  margin: 0;
}

/* 可视化部分 */
.error-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.illustration-container {
  position: relative;
  width: 300px;
  height: 300px;
}

.main-illustration {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 200px;
  height: 200px;
  background-color: var(--bg-secondary);
  border-radius: 50%;
  border: 4px solid var(--primary-color);
  margin: 0 auto;
  animation: pulse 2s ease-in-out infinite;
}

.lost-icon {
  font-size: 4rem;
  animation: wiggle 2s ease-in-out infinite;
}

/* 浮动形状 */
.floating-shapes {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.shape {
  position: absolute;
  border-radius: var(--border-radius-md);
  background-color: var(--bg-tertiary);
  opacity: 0.6;
  animation: float-around 8s linear infinite;
}

.shape-1 {
  width: 60px;
  height: 60px;
  top: 20%;
  left: 10%;
  animation-delay: 0s;
}

.shape-2 {
  width: 40px;
  height: 40px;
  top: 10%;
  right: 20%;
  animation-delay: 1s;
}

.shape-3 {
  width: 80px;
  height: 80px;
  bottom: 20%;
  left: 20%;
  animation-delay: 2s;
}

.shape-4 {
  width: 50px;
  height: 50px;
  bottom: 30%;
  right: 10%;
  animation-delay: 3s;
}

.shape-5 {
  width: 70px;
  height: 70px;
  top: 50%;
  right: 30%;
  animation-delay: 4s;
}

/* 动画 */
@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
  }
  50% {
    transform: scale(1.05);
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.2);
  }
}

@keyframes wiggle {
  0%, 100% {
    transform: rotate(0deg);
  }
  25% {
    transform: rotate(-10deg);
  }
  75% {
    transform: rotate(10deg);
  }
}

@keyframes float-around {
  0% {
    transform: translateX(0) translateY(0) rotate(0deg);
  }
  25% {
    transform: translateX(20px) translateY(-20px) rotate(90deg);
  }
  50% {
    transform: translateX(-20px) translateY(-40px) rotate(180deg);
  }
  75% {
    transform: translateX(-40px) translateY(-20px) rotate(270deg);
  }
  100% {
    transform: translateX(0) translateY(0) rotate(360deg);
  }
}

/* 响应式设计 */
@media (max-width: 768px) {
  .not-found-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-xl);
  }
  
  .number {
    font-size: 5rem;
  }
  
  .error-title {
    font-size: var(--font-size-2xl);
  }
  
  .error-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .illustration-container {
    width: 250px;
    height: 250px;
  }
  
  .main-illustration {
    width: 150px;
    height: 150px;
  }
  
  .lost-icon {
    font-size: 3rem;
  }
}

@media (max-width: 480px) {
  .not-found-page {
    padding: var(--spacing-md);
  }
  
  .number {
    font-size: 4rem;
  }
  
  .error-title {
    font-size: var(--font-size-xl);
  }
  
  .error-description {
    font-size: var(--font-size-md);
  }
  
  .illustration-container {
    width: 200px;
    height: 200px;
  }
  
  .main-illustration {
    width: 120px;
    height: 120px;
  }
  
  .lost-icon {
    font-size: 2.5rem;
  }
}
</style>