トップに戻るボタン

                <div class="fixed bottom-5 right-5">
  <a href="#"
    class="group flex items-center justify-center p-4 rounded-full bg-gradient-to-br from-purple-500 via-pink-500 to-red-500 text-white shadow-lg transform transition-all duration-300 hover:scale-110 active:scale-95 focus:outline-none focus:ring-4 focus:ring-purple-300 dark:from-purple-700 dark:via-pink-700 dark:to-red-700 dark:focus:ring-purple-800"
    aria-label="Back to top">
    <svg class="h-8 w-8 transition-transform duration-300 group-hover:-translate-y-1" fill="none" stroke="currentColor"
      viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
      <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 10l7-7m0 0l7 7m-7-7v18"></path>
    </svg>
  </a>
</div>
              

                <div class="fixed bottom-4 right-4 z-50">
  <a href="#" class="bg-purple-600 dark:bg-purple-800 text-white dark:text-purple-200 p-4 rounded-full shadow-lg transition-all duration-300 transform hover:scale-110 focus:outline-none focus:ring-4 focus:ring-purple-500 focus:ring-opacity-50">
    <svg class="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
      <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 10l7-7m0 0l7 7m-7-7v18"></path>
    </svg>
  </a>
</div>
              

                <a href="#" class="fixed bottom-4 right-4 bg-red-500 text-yellow-300 border-4 border-black dark:bg-red-700 dark:text-yellow-100 dark:border-white transition-all duration-300 hover:bg-red-600 hover:text-yellow-400 dark:hover:bg-red-800 dark:hover:text-yellow-200 p-4 shadow-[8px_8px_0_0_#000] dark:shadow-[8px_8px_0_0_#fff] z-50">
    <span class="font-extrabold text-xl uppercase">↑<br/>Top</span>
</a>
              

                <div class="fixed bottom-6 right-6">
  <a href="#top" class="group relative flex items-center justify-center p-3 rounded-full bg-blue-500 text-white shadow-lg transition-all duration-300 ease-in-out hover:scale-110 focus:outline-none focus:ring-4 focus:ring-blue-300 dark:bg-blue-700 dark:hover:scale-110 dark:focus:ring-blue-800">
    <svg class="w-6 h-6 transform transition-transform duration-300 group-hover:-translate-y-1 group-hocus:-translate-y-1" fill="none" stroke="currentColor" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
      <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M8 7l4-4m0 0l4 4m-4-4v18"></path>
    </svg>
    <span class="absolute top-1/2 left-1/2 -translate-x-1/2 -translate-y-1/2 text-xs font-semibold opacity-0 group-hover:opacity-100 group-focus:opacity-100 transition-opacity duration-300 delay-150">Back to Top</span>
  </a>
</div>
              

                <div class="fixed bottom-4 right-4">
  <a href="#" class="bg-gray-300 dark:bg-gray-700 text-gray-800 dark:text-gray-200 p-3 rounded-full shadow-md hover:bg-gray-400 dark:hover:bg-gray-600 transition-colors duration-300 ease-in-out flex items-center justify-center">
    <svg xmlns="http://www.w3.org/2000/svg" class="h-6 w-6" fill="none" viewBox="0 0 24 24" stroke="currentColor">
      <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 10l7-7m0 0l7 7m-7-7v18" />
    </svg>
  </a>
</div>
              

                <div class="fixed bottom-6 right-6">
  <a href="#top" class="group block">
    <button class="relative flex items-center justify-center w-16 h-16 bg-white dark:bg-gray-800 bg-opacity-20 dark:bg-opacity-20 backdrop-filter backdrop-blur-lg rounded-full shadow-lg transition-all duration-300 ease-in-out hover:scale-110 focus:outline-none focus:ring-4 focus:ring-teal-500 dark:focus:ring-teal-400 focus:ring-opacity-70">
      <svg class="w-8 h-8 text-gray-800 dark:text-gray-200 transform transition-transform duration-300 ease-in-out group-hover:-translate-y-1" fill="none" stroke="currentColor" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 10l7-7m0 0l7 7m-7-7v18"></path>
      </svg>
      <span class="absolute top-1/2 left-1/2 -translate-x-1/2 translate-y-full opacity-0 group-hover:opacity-100 group-hover:translate-y-1/2 px-3 py-1 bg-gray-800 dark:bg-gray-200 text-white dark:text-gray-800 text-sm font-semibold rounded-md whitespace-nowrap transition-all duration-300 ease-in-out">
        Back to Top
      </span>
    </button>
  </a>
</div>

<div class="min-h-screen bg-gradient-to-br from-stone-100 via-stone-200 to-stone-300 dark:from-stone-800 dark:via-stone-900 dark:to-black flex flex-col items-center justify-center p-8">
  <h1 id="top" class="text-5xl font-extrabold text-gray-900 dark:text-white mb-8 text-center">Dashboard Overview</h1>
  <p class="text-lg text-gray-700 dark:text-gray-300 max-w-2xl text-center mb-12">
    Scroll down to see the 
              

                <button onclick="window.scrollTo({top: 0, behavior: 'smooth'})" class="fixed bottom-6 right-6 p-3 rounded-full bg-pink-200 dark:bg-pink-900 text-pink-700 dark:text-pink-200 shadow-md hover:bg-pink-300 dark:hover:bg-pink-800 focus:outline-none focus:ring-2 focus:ring-pink-400 dark:focus:ring-pink-700 hover:scale-110 focus:scale-110 transition-all duration-300 group">
  <svg xmlns="http://www.w3.org/2000/svg" class="h-6 w-6 transform group-hover:-translate-y-1 transition-transform duration-300" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2">
    <path stroke-linecap="round" stroke-linejoin="round" d="M5 10l7-7m0 0l7 7m-7-7v18" />
  </svg>
  <span class="sr-only">Back to top</span>
</button>
              

                <!-- Back to Top Button Component -->
<a href="#top" class="fixed bottom-6 right-6 flex items-center justify-center w-12 h-12 bg-emerald-700 text-white rounded-full shadow-lg transform transition-transform duration-200 hover:scale-110 hover:bg-emerald-600 dark:bg-emerald-600 dark:hover:bg-emerald-500" aria-label="Back to Top">
  <span class="sr-only">Back to Top</span>
  <svg class="w-6 h-6" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24" aria-hidden="true">
    <path stroke-linecap="round" stroke-linejoin="round" d="M5 15l7-7 7 7"/>
  </svg>
</a>

<!-- To enable smooth scrolling behavior across the page, add the `scroll-smooth` class to your `<html>` element: -->
<!-- <html class="scroll-smooth"> -->
              

                <div class="fixed bottom-10 right-10">
    <a href="#top" class="flex items-center justify-center w-12 h-12 rounded-full bg-white bg-opacity-30 backdrop-blur-md shadow-lg hover:bg-opacity-50 transition duration-300 dark:bg-gray-800 dark:bg-opacity-50 dark:hover:bg-opacity-70">
        <img src="https://picsum.photos/32" alt="Back to Top" class="w-8 h-8" />
    </a>
</div>
              

                <template>
  <button
    :class="[
      'fixed bottom-6 right-6 p-4 rounded-full shadow-lg transition-all duration-300',
      'bg-gray-200 text-gray-700',
      'dark:bg-gray-700 dark:text-gray-200 dark:shadow-lg-dark',
      'hover:shadow-xl hover:-translate-y-1',
      'dark:hover:shadow-xl-dark dark:hover:-translate-y-1',
    ]"
    @click="scrollToTop"
    v-show="isVisible"
  >
    <svg
      xmlns="http://www.w3.org/2000/svg"
      class="h-6 w-6"
      fill="none"
      viewBox="0 0 24 24"
      stroke="currentColor"
    >
      <path
        stroke-linecap="round"
        stroke-linejoin="round"
        stroke-width="2"
        d="M5 10l7-7m0 0l7 7m-7-7v18"
      />
    </svg>
  </button>
</template>

<script setup>
import { ref, onMounted, onUnmounted } from 'vue';

const isVisible = ref(false);

const scrollToTop = () => {
  window.scrollTo({ top: 0, behavior: 'smooth' });
};

const handleScroll = () => {
  isVisible.value = window.scrollY > 100;
};

onMounted(() => {
  window.addEventListener('scroll', handleScroll);
});

onUnmounted(() => {
  window.removeEventListener('scroll', handleScroll);
});
</script>

<style scoped>
.shadow-lg {
  box-shadow: 7px 7px 14px #cbced1, -7px -7px 14px #ffffff;
}

.shadow-xl {
  box-shadow: 9px 9px 18px #cbced1, -9px -9px 18px #ffffff;
}

.dark .shadow-lg-dark {
  box-shadow: 7px 7px 14px #4a4a4a, -7px -7px 14px #626262;
}

.dark .shadow-xl-dark {
  box-shadow: 9px 9px 18px #4a4a4a, -9px -9px 18px #626262;
}
</style>