feat: 暗色模式星空背景、主题切换顺序优化

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

components/layout/Footer.vue

@@ -12,11 +12,11 @@ const psBeian = config.public.psBeian
       © {{ new Date().getFullYear() }} {{ siteConfig.siteName }}
       <template v-if="icp">
         &nbsp;·&nbsp;
-        <a href="https://beian.miit.gov.cn/" target="_blank" rel="noopener noreferrer" class="hover:opacity-70" style="border-bottom: 1px solid var(--color-text-secondary); padding-bottom: 1px;">{{ icp }}</a>
+        <a href="https://beian.miit.gov.cn/" target="_blank" rel="noopener noreferrer" class="hover:opacity-70 whitespace-nowrap" style="border-bottom: 1px solid var(--color-text-secondary); padding-bottom: 1px;">{{ icp }}</a>
       </template>
       <template v-if="psBeian">
         &nbsp;·&nbsp;
-        <a :href="`https://beian.mps.gov.cn/#/query/webSearch?code=${psBeian}`" rel="noreferrer" target="_blank" class="hover:opacity-70" style="border-bottom: 1px solid var(--color-text-secondary); padding-bottom: 1px;">
+        <a :href="`https://beian.mps.gov.cn/#/query/webSearch?code=${psBeian}`" rel="noreferrer" target="_blank" class="hover:opacity-70 whitespace-nowrap" style="border-bottom: 1px solid var(--color-text-secondary); padding-bottom: 1px;">
           <img src="@/assets/备案图标.png" alt="" class="w-3 h-3 inline" />川公网安备{{ psBeian }}号
         </a>
       </template>

components/layout/StarField.client.vue

@@ -0,0 +1,151 @@
+<script setup lang="ts">
+const canvasRef = ref<HTMLCanvasElement>()
+let ctx: CanvasRenderingContext2D | null = null
+let animId = 0
+let stars: Star[] = []
+let shootingStars: ShootingStar[] = []
+let nextShootTime = 0
+
+interface Star {
+  x: number
+  y: number
+  size: number
+  baseAlpha: number
+  twinkleSpeed: number
+  twinklePhase: number
+}
+
+interface ShootingStar {
+  x: number
+  y: number
+  speed: number
+  length: number
+  alpha: number
+  angle: number
+}
+
+function init() {
+  const canvas = canvasRef.value
+  if (!canvas || ctx) return
+  canvas.width = window.innerWidth
+  canvas.height = window.innerHeight
+  ctx = canvas.getContext('2d')
+
+  const count = Math.floor((canvas.width * canvas.height) / 2000)
+  stars = Array.from({ length: count }, () => ({
+    x: Math.random() * canvas.width,
+    y: Math.random() * canvas.height,
+    size: 0.3 + Math.random() * 2.0,
+    baseAlpha: 0.3 + Math.random() * 0.7,
+    twinkleSpeed: 0.2 + Math.random() * 0.8,
+    twinklePhase: Math.random() * Math.PI * 2,
+  }))
+}
+
+function scheduleShootingStar() {
+  nextShootTime = Date.now() + 2000 + Math.random() * 8000
+}
+
+function spawnShootingStar(w: number, h: number) {
+  const angle = Math.PI / 4 + (Math.random() - 0.5) * 0.3
+  shootingStars.push({
+    x: 0,
+    y: Math.random() * h * 0.4,
+    speed: 6 + Math.random() * 8,
+    length: 60 + Math.random() * 100,
+    alpha: 1,
+    angle,
+  })
+}
+
+function isDark(): boolean {
+  return document.documentElement.classList.contains('dark')
+}
+
+function animate() {
+  const canvas = canvasRef.value
+  if (!canvas || !ctx) return
+
+  if (!isDark()) {
+    ctx.clearRect(0, 0, canvas.width, canvas.height)
+    animId = requestAnimationFrame(animate)
+    return
+  }
+
+  const { width, height } = canvas
+  ctx.clearRect(0, 0, width, height)
+  const now = Date.now()
+
+  // Stars
+  for (const s of stars) {
+    const alpha = s.baseAlpha * (0.5 + 0.5 * Math.sin(now * s.twinkleSpeed * 0.001 + s.twinklePhase))
+    ctx.beginPath()
+    ctx.arc(s.x, s.y, s.size, 0, Math.PI * 2)
+    ctx.fillStyle = `rgba(255, 255, 255, ${alpha})`
+    ctx.fill()
+  }
+
+  // Shooting stars
+  if (now > nextShootTime && shootingStars.length < 4) {
+    spawnShootingStar(width, height)
+    scheduleShootingStar()
+  }
+
+  for (let i = shootingStars.length - 1; i >= 0; i--) {
+    const ss = shootingStars[i]
+    ss.x += Math.cos(ss.angle) * ss.speed
+    ss.y += Math.sin(ss.angle) * ss.speed
+    ss.alpha -= 0.005
+
+    if (ss.alpha <= 0 || ss.x > width + ss.length || ss.y > height) {
+      shootingStars.splice(i, 1)
+      continue
+    }
+
+    const tailX = ss.x - Math.cos(ss.angle) * ss.length
+    const tailY = ss.y - Math.sin(ss.angle) * ss.length
+    const gradient = ctx.createLinearGradient(tailX, tailY, ss.x, ss.y)
+    gradient.addColorStop(0, `rgba(255, 255, 255, 0)`)
+    gradient.addColorStop(1, `rgba(255, 255, 255, ${ss.alpha})`)
+    ctx.beginPath()
+    ctx.moveTo(tailX, tailY)
+    ctx.lineTo(ss.x, ss.y)
+    ctx.strokeStyle = gradient
+    ctx.lineWidth = 1.5
+    ctx.stroke()
+  }
+
+  animId = requestAnimationFrame(animate)
+}
+
+onMounted(async () => {
+  if (typeof window === 'undefined' || window.matchMedia('(prefers-reduced-motion: reduce)').matches) return
+
+  await nextTick()
+  init()
+  animate()
+
+  const onResize = () => {
+    const canvas = canvasRef.value
+    if (!canvas) return
+    canvas.width = window.innerWidth
+    canvas.height = window.innerHeight
+    const count = Math.floor((canvas.width * canvas.height) / 2000)
+    stars = Array.from({ length: count }, () => ({
+      x: Math.random() * canvas.width,
+      y: Math.random() * canvas.height,
+      size: 0.3 + Math.random() * 2.0,
+      baseAlpha: 0.3 + Math.random() * 0.7,
+      twinkleSpeed: 0.2 + Math.random() * 0.8,
+      twinklePhase: Math.random() * Math.PI * 2,
+    }))
+  }
+  window.addEventListener('resize', onResize)
+})
+
+const style = `position: fixed; inset: 0; z-index: 0; pointer-events: none;`
+</script>
+
+<template>
+  <canvas ref="canvasRef" :style="style" />
+</template>

components/layout/ThemeToggle.vue

@@ -2,29 +2,33 @@
 import { Icon } from '@iconify/vue'
 
 const colorMode = useColorMode()
-
+type Mode = 'system' | 'dark' | 'light'
-const modes = ['light', 'dark', 'system'] as const
-type Mode = typeof modes[number]
 
 const iconMap: Record<Mode, string> = {
-  light: 'mdi:weather-sunny',
-  dark: 'mdi:weather-night',
   system: 'mdi:monitor',
+  dark: 'mdi:weather-night',
+  light: 'mdi:weather-sunny',
 }
 
 const labelMap: Record<Mode, string> = {
-  light: '浅色模式',
-  dark: '深色模式',
   system: '跟随系统',
+  dark: '深色模式',
+  light: '浅色模式',
 }
 
+const cycleOrder = computed<Mode[]>(() => {
+  const isDark = colorMode.value === 'dark'
+  return isDark ? ['system', 'light', 'dark'] : ['system', 'dark', 'light']
+})
+
 const currentMode = computed(() => colorMode.preference as Mode)
 const currentIcon = computed(() => iconMap[currentMode.value] || iconMap.system)
 const currentLabel = computed(() => labelMap[currentMode.value] || labelMap.system)
 
 function cycle() {
-  const idx = modes.indexOf(currentMode.value)
+  const order = cycleOrder.value
-  colorMode.preference = modes[(idx + 1) % modes.length]
+  const idx = order.indexOf(currentMode.value)
+  colorMode.preference = order[(idx + 1) % order.length]
 }
 </script>
 

config/site.ts.example

@@ -48,8 +48,4 @@ export const siteConfig = {
     repoId: '',
     category: 'Announcements',
     categoryId: '',
-  },
+  },}
-
-  // ICP 备案号（留空则不显示）
-  icp: '',
-}

layouts/default.vue

@@ -24,9 +24,10 @@ useSeoMeta({
 </script>
 
 <template>
-  <div class="min-h-screen flex flex-col">
+  <div class="min-h-screen flex flex-col relative z-10">
+    <LayoutStarField />
     <LayoutNavBar />
-    <main class="flex-1">
+    <main class="flex-1 relative z-10">
       <slot />
     </main>
     <LayoutFooter />