Using Vue 3 Teleport for Modals and Overlays

<!-- Modal.vue -->
<template>
  <teleport to="body">
    <div v-if="isOpen" class="modal-overlay" @click="closeModal">
      <div class="modal-content" @click.stop>
        <h2>Modal Title</h2>
        <p>This content is rendered outside the component's parent DOM element.</p>
        <button @click="closeModal">Close</button>
      </div>
    </div>
  </teleport>
</template>

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

const isOpen = ref(false);

const openModal = () => {
  isOpen.value = true;
};

const closeModal = () => {
  isOpen.value = false;
};

// Expose functions for parent components to control the modal
defineExpose({
  openModal,
  closeModal
});
</script>

<style scoped>
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal-content {
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  text-align: center;
}
</style>

<!-- App.vue (example usage) -->
<template>
  <div>
    <h1>My App Content</h1>
    <button @click="modalRef.openModal()">Open Modal</button>
    <Modal ref="modalRef" />
  </div>
</template>

<script setup>
import { ref } from 'vue';
import Modal from './components/Modal.vue';

const modalRef = ref(null);
</script>