<template>
	<view class="starcity-container">
		<!-- 背景渐变 -->
		<view v-show="!isSharedBgTab" class="starcity-bg"></view>
		<image
			v-if="activeSubTab === 0 || activeSubTab === 2 || activeSubTab === 3"
			class="starcity-shared-bg"
			src="/static/background/zhoubian.png"
			mode="aspectFill"
		></image>
		<image
			v-if="activeSubTab === 1"
			class="starcity-shared-bg"
			src="/static/background/tongkuan.png"
			mode="aspectFill"
		></image>

		<!-- 顶部子标签栏 -->
		<view class="sub-tab-bar">
			<view
				v-for="(tab, index) in subTabs"
				:key="index"
				class="sub-tab-item"
				:class="{ 'active': activeSubTab === index }"
				@click="switchSubTab(index)"
			>
				<text class="sub-tab-text">{{ tab.name }}</text>
				<view v-if="activeSubTab === index" class="sub-tab-indicator"></view>
			</view>
		</view>

		<!-- 子标签内容区 -->
		<view class="sub-content-area">
			<!-- 周边 -->
			<ZhoubianContent v-show="activeSubTab === 0" class="sub-content-fill" />

			<!-- 同款 -->
			<TongkuanContent v-show="activeSubTab === 1" class="sub-content-fill" />

			<!-- 见面 -->
			<JianmianContent v-show="activeSubTab === 2" class="sub-content-fill" />

			<!-- 装扮 -->
			<view v-show="activeSubTab === 3" class="sub-content-fill dressup-wrap">
				<DressupContent />
			</view>
		</view>
	</view>
</template>

<script setup>
import { computed, ref } from 'vue';
import ZhoubianContent from './ZhoubianContent.vue';
import TongkuanContent from './TongkuanContent.vue';
import JianmianContent from './JianmianContent.vue';
import DressupContent from './DressupContent.vue';

const activeSubTab = ref(0);

const subTabs = [
	{ name: '周边' },
	{ name: '同款' },
	{ name: '见面' },
	{ name: '装扮' }
];

const switchSubTab = (index) => {
	activeSubTab.value = index;
};

const isSharedBgTab = computed(() => [0, 1, 2, 3].includes(activeSubTab.value));
</script>

<style scoped>
.starcity-container {
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	width: 100%;
	height: 100%;
	z-index: 1;
	display: flex;
	flex-direction: column;
	overflow: hidden;
}

.starcity-bg {
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background: linear-gradient(180deg, #7B5EA7 0%, #9B7EC8 100%);
	z-index: 0;
}

.starcity-shared-bg {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	z-index: 0;
}

/* 子标签栏 */
.sub-tab-bar {
	position: relative;
	z-index: 30;
	display: flex;
	flex-direction: row;
	justify-content: space-around;
	align-items: center;
	padding-top: 160rpx;
	padding-bottom: 0;
	padding-left: 20rpx;
	padding-right: 20rpx;
	height: 240rpx;
	box-sizing: border-box;
	flex-shrink: 0;
	background: transparent;
}

.sub-tab-bar::after {
	content: '';
	position: absolute;
	left: 20rpx;
	right: 20rpx;
	bottom: 0;
	height: 2rpx;
	background: rgba(255, 255, 255, 0.85);
	box-shadow: 0 0 8rpx rgba(255, 255, 255, 0.35);
}

.sub-tab-item {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	padding: 16rpx 24rpx;
	position: relative;
	cursor: pointer;
	transition: all 0.2s ease;
}

.sub-tab-item:active {
	transform: scale(0.95);
}

.sub-tab-text {
	font-size: 30rpx;
	color: rgba(255, 255, 255, 0.7);
	font-weight: 400;
	transition: all 0.2s ease;
}

.sub-tab-item.active .sub-tab-text {
	color: #fff;
	font-weight: bold;
	font-size: 32rpx;
}

.sub-tab-indicator {
	position: absolute;
	bottom: 0;
	left: 50%;
	transform: translateX(-50%);
	width: 40rpx;
	height: 6rpx;
	background: #fff;
	border-radius: 3rpx;
}

/* 内容区域 */
.sub-content-area {
	position: relative;
	z-index: 10;
	flex: 1;
	overflow: hidden;
}

.sub-content-fill {
	width: 100%;
	height: 100%;
}

/* 装扮子标签：DressupContent 是绝对定位，需要相对容器 */
.dressup-wrap {
	position: relative;
}

.dressup-wrap :deep(.dressup-content) {
	z-index: 1;
}

.dressup-wrap :deep(.background-image),
.dressup-wrap :deep(.background-overlay) {
	display: none;
}

</style>
