<template>
  <view>
    <view class="cus-header" :style="{ marginTop: safeTop + 'px' }">
      <text class="title">{{ title }}</text>
      <view class="header-buttons">
        <view class="back-btn" @click="handleBack" v-if="showBack">
          <text class="back-icon">←</text>
        </view>
        <slot name="right"></slot>
      </view>
    </view>
    <view :style="{ marginTop: safeTop + 'px', height: '40px' }"></view>
  </view>
</template>

<script>
export default {
  props: {
    title: {
      type: String,
      default: ''
    },
    showBack: {
      type: Boolean,
      default: true
    }
  },
  data() {
    return {
      safeTop: 30
    };
  },
  mounted() {
    const info = uni.getWindowInfo();
    this.safeTop = Math.max(info.safeAreaInsets.top, 30);
  },
  methods: {
    handleBack() {
      this.$emit('back');
    }
  }
};
</script>

<style lang="scss" scoped>
.cus-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 10;
}

.cus-header .title {
  font-size: 52rpx;
  font-weight: bold;
  color: #fff;
  margin-bottom: 16rpx;
  text-shadow: 0 2rpx 10rpx rgba(0, 0, 0, 0.2);
}

.header-buttons {
  position: absolute;
  top: 0;
  left: 20rpx;
  display: flex;
  align-items: center;
  gap: 20rpx;
}

.back-btn {
  width: 80rpx;
  height: 80rpx;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10rpx);
  box-shadow: 0 4rpx 15rpx rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.back-btn:active {
  transform: scale(0.9);
  box-shadow: 0 2rpx 8rpx rgba(0, 0, 0, 0.15);
}

.back-icon {
  font-size: 40rpx;
  color: #fff;
  font-weight: bold;
}
</style>
