Create a Reusable Modal Component with Vue 3 Teleport

// components/Modal.vue
<template>
  <teleport to="body">
    <transition name="modal-fade">
      <div v-if="isOpen" class="modal-overlay" @click.self="$emit('close')">
        <div class="modal-container">
          <header class="modal-header">
            <slot name="header">
              <h3>Default Header</h3>
            </slot>
            <button class="modal-close-button" @click="$emit('close')">&times;</button>
          </header>
          <section class="modal-body">
            <slot>
              <p>Default Body Content</p>
            </slot>
          </section>
          <footer class="modal-footer">
            <slot name="footer">
              <button @click="$emit('close')">Close</button>
            </slot>
          </footer>
        </div>
      </div>
    </transition>
  </teleport>
</template>

<script setup>
import { defineProps, defineEmits } from 'vue';

const props = defineProps({
  isOpen: {
    type: Boolean,
    default: false
  }
});

const emit = defineEmits(['close']);
</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-container {
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.33);
  width: 90%;
  max-width: 500px;
  transform: translateY(0);
  transition: transform 0.3s ease;
}

.modal-header, .modal-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.modal-close-button {
  background: none;
  border: none;
  font-size: 1.5em;
  cursor: pointer;
  line-height: 1;
  padding: 0 5px;
}

/* Transition styles */
.modal-fade-enter-active, .modal-fade-leave-active {
  transition: opacity 0.3s ease;
}
.modal-fade-enter-from, .modal-fade-leave-to {
  opacity: 0;
}

.modal-fade-enter-active .modal-container,
.modal-fade-leave-active .modal-container {
  transition: transform 0.3s ease;
}

.modal-fade-enter-from .modal-container,
.modal-fade-leave-to .modal-container {
  transform: translateY(-50px);
}
</style>

/* Usage in parent component:
<template>
  <button @click="isModalOpen = true">Open Modal</button>
  <Modal :is-open="isModalOpen" @close="isModalOpen = false">
    <template #header><h2>My Custom Modal Title</h2></template>
    <p>This is the main content of my modal.</p>
    <template #footer><button @click="isModalOpen = false">Cancel</button></template>
  </Modal>
</template>

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

const isModalOpen = ref(false);
</script>
*/