diff --git a/app/components/malio/modal/Modal.test.ts b/app/components/malio/modal/Modal.test.ts
new file mode 100644
index 0000000..60f9a1d
--- /dev/null
+++ b/app/components/malio/modal/Modal.test.ts
@@ -0,0 +1,320 @@
+import { afterEach, describe, expect, it } from 'vitest'
+import { enableAutoUnmount, mount } from '@vue/test-utils'
+import type { DefineComponent } from 'vue'
+import { Icon as IconifyIcon } from '@iconify/vue'
+import Modal from './Modal.vue'
+
+type ModalProps = {
+  id?: string
+  modelValue?: boolean
+  showClose?: boolean
+  dismissable?: boolean
+  closeOnEscape?: boolean
+  ariaLabel?: string
+  modalClass?: string
+  overlayClass?: string
+  headerClass?: string
+  bodyClass?: string
+  footerClass?: string
+}
+
+const ModalForTest = Modal as DefineComponent<ModalProps>
+
+function mountComponent(props: ModalProps = {}, slots?: Record<string, string>) {
+  return mount(ModalForTest, {
+    props,
+    slots,
+    global: { stubs: { Teleport: true } },
+  })
+}
+
+describe('MalioModal', () => {
+  enableAutoUnmount(afterEach)
+
+  afterEach(() => {
+    document.body.style.overflow = ''
+  })
+
+  it('does not render when modelValue is false', () => {
+    const wrapper = mountComponent({ modelValue: false })
+    expect(wrapper.find('[data-test="panel"]').exists()).toBe(false)
+  })
+
+  it('renders the panel when modelValue is true', () => {
+    const wrapper = mountComponent({ modelValue: true })
+    expect(wrapper.find('[data-test="panel"]').exists()).toBe(true)
+  })
+
+  it('centers the modal (items-center justify-center)', () => {
+    const wrapper = mountComponent({ modelValue: true })
+    const root = wrapper.find('.fixed')
+    expect(root.classes()).toContain('items-center')
+    expect(root.classes()).toContain('justify-center')
+  })
+
+  it('renders default slot in the body', () => {
+    const wrapper = mountComponent(
+      { modelValue: true },
+      { default: '<p data-test="content">Contenu</p>' },
+    )
+    expect(wrapper.find('[data-test="body"] [data-test="content"]').text()).toBe('Contenu')
+  })
+
+  it('works in uncontrolled mode (defaults closed)', () => {
+    const wrapper = mountComponent()
+    expect(wrapper.find('[data-test="panel"]').exists()).toBe(false)
+  })
+
+  it('uses custom id when provided', () => {
+    const wrapper = mountComponent({ modelValue: true, id: 'my-modal' })
+    expect(wrapper.find('.fixed').attributes('id')).toBe('my-modal')
+  })
+
+  it('generates an id when not provided', () => {
+    const wrapper = mountComponent({ modelValue: true })
+    expect(wrapper.find('.fixed').attributes('id')).toMatch(/^malio-modal-/)
+  })
+
+  it('has role="dialog" and aria-modal on the panel', () => {
+    const wrapper = mountComponent({ modelValue: true })
+    const panel = wrapper.find('[data-test="panel"]')
+    expect(panel.attributes('role')).toBe('dialog')
+    expect(panel.attributes('aria-modal')).toBe('true')
+  })
+
+  it('applies modalClass to the panel', () => {
+    const wrapper = mountComponent({ modelValue: true, modalClass: 'max-w-2xl' })
+    expect(wrapper.find('[data-test="panel"]').classes()).toContain('max-w-2xl')
+  })
+
+  it('renders the #header slot inside the header bar', () => {
+    const wrapper = mountComponent(
+      { modelValue: true },
+      { header: '<h2 data-test="title">Titre</h2>' },
+    )
+    expect(wrapper.find('[data-test="header"] [data-test="title"]').text()).toBe('Titre')
+  })
+
+  it('renders the header bar when showClose is true even without #header', () => {
+    const wrapper = mountComponent({ modelValue: true })
+    expect(wrapper.find('[data-test="header"]').exists()).toBe(true)
+  })
+
+  it('does not render the header bar when no #header and showClose is false', () => {
+    const wrapper = mountComponent({ modelValue: true, showClose: false })
+    expect(wrapper.find('[data-test="header"]').exists()).toBe(false)
+  })
+
+  it('shows the close button by default', () => {
+    const wrapper = mountComponent({ modelValue: true })
+    expect(wrapper.find('[data-test="close-button"]').exists()).toBe(true)
+  })
+
+  it('hides the close button when showClose is false', () => {
+    const wrapper = mountComponent(
+      { modelValue: true, showClose: false },
+      { header: '<h2>Titre</h2>' },
+    )
+    expect(wrapper.find('[data-test="close-button"]').exists()).toBe(false)
+  })
+
+  it('close button renders mdi:cancel-bold icon', () => {
+    const wrapper = mountComponent({ modelValue: true })
+    const icon = wrapper.findComponent(IconifyIcon)
+    expect(icon.props('icon')).toBe('mdi:cancel-bold')
+  })
+
+  it('close button has aria-label "Fermer"', () => {
+    const wrapper = mountComponent({ modelValue: true })
+    expect(wrapper.find('[data-test="close-button"]').attributes('aria-label')).toBe('Fermer')
+  })
+
+  it('emits update:modelValue false and close on close button click', async () => {
+    const wrapper = mountComponent({ modelValue: true })
+    await wrapper.find('[data-test="close-button"]').trigger('click')
+    expect(wrapper.emitted('update:modelValue')?.[0]).toEqual([false])
+    expect(wrapper.emitted('close')).toHaveLength(1)
+  })
+
+  it('sets aria-labelledby to the header id when #header is provided', () => {
+    const wrapper = mountComponent(
+      { modelValue: true, id: 'test-modal' },
+      { header: '<h2>Titre</h2>' },
+    )
+    const panel = wrapper.find('[data-test="panel"]')
+    expect(panel.attributes('aria-labelledby')).toBe('test-modal-header')
+    expect(wrapper.find('[data-test="header-content"]').attributes('id')).toBe('test-modal-header')
+  })
+
+  it('sets aria-label from ariaLabel when no #header is provided', () => {
+    const wrapper = mountComponent({ modelValue: true, ariaLabel: 'Boîte de dialogue' })
+    const panel = wrapper.find('[data-test="panel"]')
+    expect(panel.attributes('aria-label')).toBe('Boîte de dialogue')
+    expect(panel.attributes('aria-labelledby')).toBeUndefined()
+  })
+
+  it('applies headerClass to the header bar', () => {
+    const wrapper = mountComponent({ modelValue: true, headerClass: 'bg-m-primary' })
+    expect(wrapper.find('[data-test="header"]').classes()).toContain('bg-m-primary')
+  })
+
+  it('renders the #footer slot in a footer pinned below the body', () => {
+    const wrapper = mountComponent(
+      { modelValue: true },
+      { footer: '<button data-test="save">Enregistrer</button>' },
+    )
+    expect(wrapper.find('[data-test="body"] [data-test="footer"]').exists()).toBe(false)
+    expect(wrapper.find('[data-test="footer"] [data-test="save"]').exists()).toBe(true)
+  })
+
+  it('does not render the footer when no #footer slot', () => {
+    const wrapper = mountComponent({ modelValue: true })
+    expect(wrapper.find('[data-test="footer"]').exists()).toBe(false)
+  })
+
+  it('applies bodyClass to the body', () => {
+    const wrapper = mountComponent({ modelValue: true, bodyClass: 'px-10' })
+    expect(wrapper.find('[data-test="body"]').classes()).toContain('px-10')
+  })
+
+  it('applies footerClass to the footer', () => {
+    const wrapper = mountComponent(
+      { modelValue: true, footerClass: 'justify-end' },
+      { footer: '<span>pied</span>' },
+    )
+    expect(wrapper.find('[data-test="footer"]').classes()).toContain('justify-end')
+  })
+
+  it('emits update:modelValue false and close on backdrop click (dismissable)', async () => {
+    const wrapper = mountComponent({ modelValue: true })
+    await wrapper.find('[data-test="backdrop"]').trigger('click')
+    expect(wrapper.emitted('update:modelValue')?.[0]).toEqual([false])
+    expect(wrapper.emitted('close')).toHaveLength(1)
+  })
+
+  it('does not close on backdrop click when dismissable is false', async () => {
+    const wrapper = mountComponent({ modelValue: true, dismissable: false })
+    await wrapper.find('[data-test="backdrop"]').trigger('click')
+    expect(wrapper.emitted('update:modelValue')).toBeUndefined()
+  })
+
+  it('applies overlayClass to the backdrop', () => {
+    const wrapper = mountComponent({ modelValue: true, overlayClass: 'bg-black/70' })
+    expect(wrapper.find('[data-test="backdrop"]').classes()).toContain('bg-black/70')
+  })
+
+  it('closes on Escape key when closeOnEscape is true', async () => {
+    const wrapper = mountComponent({ modelValue: true })
+    await wrapper.find('[data-test="panel"]').trigger('keydown', { key: 'Escape' })
+    expect(wrapper.emitted('update:modelValue')?.[0]).toEqual([false])
+    expect(wrapper.emitted('close')).toHaveLength(1)
+  })
+
+  it('does not close on Escape when closeOnEscape is false', async () => {
+    const wrapper = mountComponent({ modelValue: true, closeOnEscape: false })
+    await wrapper.find('[data-test="panel"]').trigger('keydown', { key: 'Escape' })
+    expect(wrapper.emitted('update:modelValue')).toBeUndefined()
+  })
+
+  it('locks body scroll when opened and restores it when closed', async () => {
+    const wrapper = mountComponent({ modelValue: false })
+    expect(document.body.style.overflow).toBe('')
+    await wrapper.setProps({ modelValue: true })
+    expect(document.body.style.overflow).toBe('hidden')
+    await wrapper.setProps({ modelValue: false })
+    expect(document.body.style.overflow).toBe('')
+  })
+
+  it('moves focus into the panel when opened', async () => {
+    const wrapper = mount(ModalForTest, {
+      props: { modelValue: false, showClose: false },
+      slots: { default: '<button data-test="first">OK</button>' },
+      attachTo: document.body,
+      global: { stubs: { Teleport: true } },
+    })
+    await wrapper.setProps({ modelValue: true })
+    await wrapper.vm.$nextTick()
+    const first = wrapper.find('[data-test="first"]').element
+    expect(document.activeElement).toBe(first)
+    wrapper.unmount()
+  })
+
+  it('restores focus to the trigger when closed', async () => {
+    const trigger = document.createElement('button')
+    document.body.appendChild(trigger)
+    trigger.focus()
+    expect(document.activeElement).toBe(trigger)
+
+    const wrapper = mount(ModalForTest, {
+      props: { modelValue: false },
+      slots: { default: '<button>OK</button>' },
+      attachTo: document.body,
+      global: { stubs: { Teleport: true } },
+    })
+    await wrapper.setProps({ modelValue: true })
+    await wrapper.vm.$nextTick()
+    await wrapper.setProps({ modelValue: false })
+    await wrapper.vm.$nextTick()
+    expect(document.activeElement).toBe(trigger)
+
+    wrapper.unmount()
+    trigger.remove()
+  })
+
+  it('wraps focus to the first element when Tab is pressed on the last element', async () => {
+    const wrapper = mount(ModalForTest, {
+      props: { modelValue: true, showClose: false },
+      slots: { default: '<button data-test="btn1">First</button><button data-test="btn2">Last</button>' },
+      attachTo: document.body,
+      global: { stubs: { Teleport: true } },
+    })
+    await wrapper.vm.$nextTick()
+    const last = wrapper.find('[data-test="btn2"]').element as HTMLElement
+    last.focus()
+    expect(document.activeElement).toBe(last)
+    await wrapper.find('[data-test="panel"]').trigger('keydown', { key: 'Tab' })
+    expect(document.activeElement).toBe(wrapper.find('[data-test="btn1"]').element)
+    wrapper.unmount()
+  })
+
+  it('wraps focus to the last element when Shift+Tab is pressed on the first element', async () => {
+    const wrapper = mount(ModalForTest, {
+      props: { modelValue: true, showClose: false },
+      slots: { default: '<button data-test="btn1">First</button><button data-test="btn2">Last</button>' },
+      attachTo: document.body,
+      global: { stubs: { Teleport: true } },
+    })
+    await wrapper.vm.$nextTick()
+    const first = wrapper.find('[data-test="btn1"]').element as HTMLElement
+    first.focus()
+    expect(document.activeElement).toBe(first)
+    await wrapper.find('[data-test="panel"]').trigger('keydown', { key: 'Tab', shiftKey: true })
+    expect(document.activeElement).toBe(wrapper.find('[data-test="btn2"]').element)
+    wrapper.unmount()
+  })
+
+  it('does not release body scroll-lock when one stacked modal closes while another is still open', async () => {
+    const wrapperA = mount(ModalForTest, {
+      props: { modelValue: false },
+      attachTo: document.body,
+      global: { stubs: { Teleport: true } },
+    })
+    const wrapperB = mount(ModalForTest, {
+      props: { modelValue: false },
+      attachTo: document.body,
+      global: { stubs: { Teleport: true } },
+    })
+
+    await wrapperA.setProps({ modelValue: true })
+    expect(document.body.style.overflow).toBe('hidden')
+
+    await wrapperB.setProps({ modelValue: true })
+    expect(document.body.style.overflow).toBe('hidden')
+
+    await wrapperB.setProps({ modelValue: false })
+    expect(document.body.style.overflow).toBe('hidden')
+
+    await wrapperA.setProps({ modelValue: false })
+    expect(document.body.style.overflow).toBe('')
+  })
+})
diff --git a/app/components/malio/modal/Modal.vue b/app/components/malio/modal/Modal.vue
new file mode 100644
index 0000000..cb28c48
--- /dev/null
+++ b/app/components/malio/modal/Modal.vue
@@ -0,0 +1,280 @@
+<template>
+  <Teleport to="body">
+    <Transition
+      name="modal"
+      appear
+      @after-leave="isRendered = false"
+    >
+      <div
+        v-if="isRendered && isOpen"
+        :id="componentId"
+        class="fixed inset-0 z-50 flex items-center justify-center p-4"
+        v-bind="attrs"
+      >
+        <div
+          :class="twMerge('absolute inset-0 bg-black/40', overlayClass)"
+          data-test="backdrop"
+          @click="onBackdropClick"
+        />
+
+        <div
+          ref="panelRef"
+          :class="twMerge(
+            'relative z-50 flex max-h-[85vh] w-full max-w-md flex-col rounded-malio bg-white',
+            modalClass,
+          )"
+          role="dialog"
+          aria-modal="true"
+          :aria-labelledby="hasHeader ? headerId : undefined"
+          :aria-label="hasHeader ? undefined : (ariaLabel || undefined)"
+          tabindex="-1"
+          data-test="panel"
+          @keydown="onKeydown"
+        >
+          <div
+            v-if="hasHeader || showClose"
+            :class="twMerge('flex shrink-0 items-center justify-between gap-4 px-5 py-[25px]', headerClass)"
+            data-test="header"
+          >
+            <div
+              :id="headerId"
+              class="min-w-0 flex-1"
+              data-test="header-content"
+            >
+              <slot name="header" />
+            </div>
+            <button
+              v-if="showClose"
+              type="button"
+              aria-label="Fermer"
+              class="flex h-8 w-8 shrink-0 cursor-pointer items-center justify-center rounded-full transition-colors hover:bg-m-surface"
+              data-test="close-button"
+              @click="close"
+            >
+              <IconifyIcon
+                icon="mdi:cancel-bold"
+                :width="16"
+                :height="16"
+              />
+            </button>
+          </div>
+          <div
+            :class="twMerge('flex-1 overflow-y-auto px-5', bodyClass)"
+            data-test="body"
+          >
+            <slot />
+          </div>
+          <div
+            v-if="$slots.footer"
+            :class="twMerge('flex shrink-0 items-center gap-3 border-t border-m-border px-5 py-4', footerClass)"
+            data-test="footer"
+          >
+            <slot name="footer" />
+          </div>
+        </div>
+      </div>
+    </Transition>
+  </Teleport>
+</template>
+
+<script setup lang="ts">
+import {
+  computed,
+  nextTick,
+  onBeforeUnmount,
+  onMounted,
+  ref,
+  useAttrs,
+  useId,
+  useSlots,
+  watch,
+} from 'vue'
+import { Icon as IconifyIcon } from '@iconify/vue'
+import { twMerge } from 'tailwind-merge'
+
+defineOptions({ name: 'MalioModal', inheritAttrs: false })
+
+const props = withDefaults(
+  defineProps<{
+    id?: string
+    modelValue?: boolean
+    showClose?: boolean
+    dismissable?: boolean
+    closeOnEscape?: boolean
+    ariaLabel?: string
+    modalClass?: string
+    overlayClass?: string
+    headerClass?: string
+    bodyClass?: string
+    footerClass?: string
+  }>(),
+  {
+    id: '',
+    modelValue: undefined,
+    showClose: true,
+    dismissable: true,
+    closeOnEscape: true,
+    ariaLabel: '',
+    modalClass: '',
+    overlayClass: '',
+    headerClass: '',
+    bodyClass: '',
+    footerClass: '',
+  },
+)
+
+const emit = defineEmits<{
+  (e: 'update:modelValue', value: boolean): void
+  (e: 'close'): void
+}>()
+
+const attrs = useAttrs()
+const generatedId = useId()
+
+const componentId = computed(() => props.id || `malio-modal-${generatedId}`)
+
+const slots = useSlots()
+const headerId = computed(() => `${componentId.value}-header`)
+const hasHeader = computed(() => !!slots.header)
+
+const isControlled = computed(() => props.modelValue !== undefined)
+const localValue = ref(false)
+const isOpen = computed(() =>
+  isControlled.value ? props.modelValue! : localValue.value,
+)
+const isRendered = ref(isOpen.value)
+
+const panelRef = ref<HTMLElement | null>(null)
+
+let previouslyFocused: HTMLElement | null = null
+// Per-instance flag: true while this modal holds a scroll-lock count slot.
+let lockedByThisInstance = false
+
+function getFocusable(container: HTMLElement): HTMLElement[] {
+  return Array.from(
+    container.querySelectorAll<HTMLElement>(
+      'a[href], button:not([disabled]), textarea:not([disabled]), input:not([disabled]), select:not([disabled]), [tabindex]:not([tabindex="-1"]), [contenteditable]:not([contenteditable="false"])',
+    ),
+  ).filter((el) => el.tabIndex !== -1)
+}
+
+function onOpen() {
+  previouslyFocused = (document.activeElement as HTMLElement | null) ?? null
+  if (!lockedByThisInstance) {
+    lockedByThisInstance = true
+    openModalCount++
+    if (openModalCount === 1) {
+      document.body.style.overflow = 'hidden'
+    }
+  }
+  nextTick(() => {
+    const panel = panelRef.value
+    if (!panel) return
+    const focusable = getFocusable(panel)
+    ;(focusable[0] ?? panel).focus()
+  })
+}
+
+function onClose() {
+  if (lockedByThisInstance) {
+    lockedByThisInstance = false
+    openModalCount = Math.max(0, openModalCount - 1)
+    if (openModalCount === 0) {
+      document.body.style.overflow = ''
+    }
+  }
+  previouslyFocused?.focus?.()
+  previouslyFocused = null
+}
+
+watch(isOpen, (val) => {
+  if (val) {
+    isRendered.value = true
+    onOpen()
+  }
+  else {
+    onClose()
+  }
+})
+
+onMounted(() => {
+  if (isOpen.value) onOpen()
+})
+
+onBeforeUnmount(() => {
+  // If this instance is still holding a scroll-lock slot, release it.
+  if (lockedByThisInstance) {
+    lockedByThisInstance = false
+    openModalCount = Math.max(0, openModalCount - 1)
+    if (openModalCount === 0) {
+      document.body.style.overflow = ''
+    }
+  }
+})
+
+function onBackdropClick() {
+  if (props.dismissable) close()
+}
+
+function onKeydown(e: KeyboardEvent) {
+  if (e.key === 'Escape' && props.closeOnEscape) {
+    e.stopPropagation()
+    close()
+    return
+  }
+  if (e.key !== 'Tab') return
+
+  const panel = panelRef.value
+  if (!panel) return
+  const focusable = getFocusable(panel)
+  if (focusable.length === 0) {
+    e.preventDefault()
+    panel.focus()
+    return
+  }
+  const first = focusable[0]!
+  const last = focusable[focusable.length - 1]!
+  if (e.shiftKey && document.activeElement === first) {
+    e.preventDefault()
+    last.focus()
+  }
+  else if (!e.shiftKey && document.activeElement === last) {
+    e.preventDefault()
+    first.focus()
+  }
+}
+
+function close() {
+  if (!isControlled.value) localValue.value = false
+  emit('update:modelValue', false)
+  emit('close')
+}
+</script>
+
+<script lang="ts">
+// Shared across all MalioModal instances: only the last open modal releases the body scroll-lock.
+let openModalCount = 0
+</script>
+
+<style scoped>
+.modal-enter-active,
+.modal-leave-active {
+  transition: opacity 0.2s ease;
+}
+
+.modal-enter-active > div:last-child,
+.modal-leave-active > div:last-child {
+  transition: transform 0.2s ease, opacity 0.2s ease;
+}
+
+.modal-enter-from,
+.modal-leave-to {
+  opacity: 0;
+}
+
+.modal-enter-from > div:last-child,
+.modal-leave-to > div:last-child {
+  transform: scale(0.95);
+  opacity: 0;
+}
+</style>