<template>
  <LoginLayout>

    <!-- 背景 -->
    <template #background>
      <div class="login-bg"></div>
      <!-- 漂浮闪烁点 -->
      <div class="spark-layer" aria-hidden="true">
        <span v-for="d in dots" :key="d.id" class="spark" :style="dotStyle(d)" />
      </div>
    </template>

    <template #main>
      <BottomDock mode="ellipse" :auto-hide="false" :custom-class="['dock-style']" :auto-rotate="true"></BottomDock>
    </template>

  </LoginLayout>
</template>

<script>
import LoginLayout from "@/layouts/LoginLayout.vue";
import BottomDock from "@/components/ui/BottomDock.vue";

export default {
  name: "MainPage",
  components: { 
    LoginLayout, 
    BottomDock 
  },
  created() {

  },
  data() {
    return {
      // 亮点
      dots: [],
    };
  },
  mounted() {
    this.updateScale();
    window.addEventListener("resize", this.updateScale, { passive: true });
    this.initDots();
  },
  beforeDestroy() {
    window.removeEventListener("resize", this.updateScale);
  },
  methods: {
    updateScale() {
      const w = window.innerWidth || this.baseW;
      const h = window.innerHeight || this.baseH;
      // 取 min 保证不裁切（大屏常见）
      this.scale = Math.min(w / this.baseW, h / this.baseH);
      // 写到 css 变量，方便 calc(var(--s) * xxxpx)
      this.$el && this.$el.style.setProperty("--s", this.scale.toFixed(6));
    },
    // ---------- 闪烁点 ----------
    initDots() {
      const count = 50;
      const arr = [];
      for (let i = 0; i < count; i++) {
        arr.push({
          id: i,
          x: 18 + Math.random() * 64, // 百分比布局，适配任意屏幕
          y: 22 + Math.random() * 56,
          r: 1.2 + Math.random() * 2.8, // 半径
          a: 0.45 + Math.random() * 0.55,
          d: Math.random() * 2.8, // delay
          t: 1.8 + Math.random() * 2.6, // duration
        });
      }
      this.dots = arr;
    },
    dotStyle(d) {
      return {
        left: d.x + "%",
        top: d.y + "%",
        width: `${d.r * 4}px`,
        height: `${d.r * 4}px`,
        opacity: d.a,
        animationDelay: `${d.d}s`,
        animationDuration: `${d.t}s`,
      };
    },
  }

}
</script>

<style scoped>
.dock-style {
  left: 0;
  bottom: unset !important;
  height: 100%;
  margin: auto 0;
  border-radius: calc(var(--s) * 1.125rem);
  background: linear-gradient(180deg, rgba(10, 35, 70, .18), rgba(0, 0, 0, .08));
  box-shadow: 0 0 calc(var(--s) * 1.625rem) rgba(0, 140, 255, .08) inset;
  backdrop-filter: blur(.125rem);
}
.dock-style ::v-deep .right-arrow {
  margin-left: 100px;
}
.dock-style ::v-deep .left-arrow {
  margin-right: 100px;
}
.main-page {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  --s: 1;
  color: #d9efff;
  user-select: none;
}

.login-bg {
  background: url('@/assets/images/main-background.png') no-repeat center/cover;
  width: 100%;
  height: 100%;
  filter: saturate(1.05) contrast(1.03);
}

/* 闪烁亮点 */
.spark-layer {
  position: absolute;
  inset: 0;
  z-index: 4;
  pointer-events: none;
  width: 100%;
  height: 100%;
}

.spark {
  position: absolute;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(140, 235, 255, .95), rgba(140, 235, 255, 0) 70%);
  animation-name: twinkle;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
}

@keyframes twinkle {
  0% {
    transform: translateZ(0) scale(.7);
    opacity: .22;
  }

  50% {
    transform: translateZ(0) scale(1.25);
    opacity: .9;
  }

  100% {
    transform: translateZ(0) scale(.7);
    opacity: .22;
  }
}
</style>
