diff --git a/web/src/components/SftCorrectionArea.test.ts b/web/src/components/SftCorrectionArea.test.ts
new file mode 100644
index 0000000..5c72d6a
--- /dev/null
+++ b/web/src/components/SftCorrectionArea.test.ts
@@ -0,0 +1,62 @@
+import { mount } from '@vue/test-utils'
+import SftCorrectionArea from './SftCorrectionArea.vue'
+import { describe, it, expect } from 'vitest'
+
+describe('SftCorrectionArea', () => {
+  it('renders a textarea', () => {
+    const w = mount(SftCorrectionArea)
+    expect(w.find('textarea').exists()).toBe(true)
+  })
+
+  it('submit button is disabled when textarea is empty', () => {
+    const w = mount(SftCorrectionArea)
+    const btn = w.find('[data-testid="submit-btn"]')
+    expect((btn.element as HTMLButtonElement).disabled).toBe(true)
+  })
+
+  it('submit button is disabled when textarea is whitespace only', async () => {
+    const w = mount(SftCorrectionArea)
+    await w.find('textarea').setValue('   ')
+    const btn = w.find('[data-testid="submit-btn"]')
+    expect((btn.element as HTMLButtonElement).disabled).toBe(true)
+  })
+
+  it('submit button is enabled when textarea has content', async () => {
+    const w = mount(SftCorrectionArea)
+    await w.find('textarea').setValue('def add(a, b): return a + b')
+    const btn = w.find('[data-testid="submit-btn"]')
+    expect((btn.element as HTMLButtonElement).disabled).toBe(false)
+  })
+
+  it('clicking submit emits submit with trimmed text', async () => {
+    const w = mount(SftCorrectionArea)
+    await w.find('textarea').setValue('  def add(a, b): return a + b  ')
+    await w.find('[data-testid="submit-btn"]').trigger('click')
+    expect(w.emitted('submit')?.[0]).toEqual(['def add(a, b): return a + b'])
+  })
+
+  it('clicking cancel emits cancel', async () => {
+    const w = mount(SftCorrectionArea)
+    await w.find('[data-testid="cancel-btn"]').trigger('click')
+    expect(w.emitted('cancel')).toBeTruthy()
+  })
+
+  it('Escape key emits cancel', async () => {
+    const w = mount(SftCorrectionArea)
+    await w.find('textarea').trigger('keydown', { key: 'Escape' })
+    expect(w.emitted('cancel')).toBeTruthy()
+  })
+
+  it('Ctrl+Enter emits submit when text is non-empty', async () => {
+    const w = mount(SftCorrectionArea)
+    await w.find('textarea').setValue('correct answer')
+    await w.find('textarea').trigger('keydown', { key: 'Enter', ctrlKey: true })
+    expect(w.emitted('submit')?.[0]).toEqual(['correct answer'])
+  })
+
+  it('Ctrl+Enter does not emit submit when text is empty', async () => {
+    const w = mount(SftCorrectionArea)
+    await w.find('textarea').trigger('keydown', { key: 'Enter', ctrlKey: true })
+    expect(w.emitted('submit')).toBeFalsy()
+  })
+})
diff --git a/web/src/components/SftCorrectionArea.vue b/web/src/components/SftCorrectionArea.vue
new file mode 100644
index 0000000..b9279f5
--- /dev/null
+++ b/web/src/components/SftCorrectionArea.vue
@@ -0,0 +1,130 @@
+<template>
+  <div class="correction-area">
+    <label class="correction-label" for="correction-textarea">
+      Write the corrected response:
+    </label>
+    <textarea
+      id="correction-textarea"
+      ref="textareaEl"
+      v-model="text"
+      class="correction-textarea"
+      aria-label="Write corrected response"
+      aria-required="true"
+      :aria-describedby="describedBy"
+      placeholder="Write the response this model should have given..."
+      rows="4"
+      @keydown.escape="$emit('cancel')"
+      @keydown.enter.ctrl.prevent="submitIfValid"
+      @keydown.enter.meta.prevent="submitIfValid"
+    />
+    <div class="correction-actions">
+      <button
+        data-testid="submit-btn"
+        class="btn-submit"
+        :disabled="!isValid"
+        @click="submitIfValid"
+      >
+        Submit correction
+      </button>
+      <button data-testid="cancel-btn" class="btn-cancel" @click="$emit('cancel')">
+        Cancel
+      </button>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, computed, onMounted } from 'vue'
+
+const props = withDefaults(defineProps<{ describedBy?: string }>(), { describedBy: undefined })
+
+const emit = defineEmits<{ submit: [text: string]; cancel: [] }>()
+
+const text       = ref('')
+const textareaEl = ref<HTMLTextAreaElement | null>(null)
+const isValid    = computed(() => text.value.trim().length > 0)
+
+onMounted(() => textareaEl.value?.focus())
+
+function submitIfValid() {
+  if (isValid.value) emit('submit', text.value.trim())
+}
+
+function reset() {
+  text.value = ''
+}
+
+defineExpose({ reset })
+</script>
+
+<style scoped>
+.correction-area {
+  display: flex;
+  flex-direction: column;
+  gap: var(--space-3);
+  padding: var(--space-4);
+  border-top: 1px solid var(--color-border);
+  background: var(--color-surface-alt, var(--color-surface));
+  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
+}
+
+.correction-label {
+  font-size: 0.85rem;
+  font-weight: 600;
+  color: var(--color-text-muted);
+}
+
+.correction-textarea {
+  width: 100%;
+  min-height: 7rem;
+  padding: var(--space-3);
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius-md);
+  background: var(--color-surface-raised);
+  color: var(--color-text);
+  font-family: var(--font-mono);
+  font-size: 0.88rem;
+  line-height: 1.5;
+  resize: vertical;
+}
+
+.correction-textarea:focus {
+  outline: 2px solid var(--color-primary);
+  outline-offset: 1px;
+}
+
+.correction-actions {
+  display: flex;
+  gap: var(--space-3);
+  align-items: center;
+}
+
+.btn-submit {
+  padding: var(--space-2) var(--space-4);
+  background: var(--color-primary);
+  color: var(--color-text-inverse, #fff);
+  border: none;
+  border-radius: var(--radius-md);
+  font-size: 0.9rem;
+  cursor: pointer;
+}
+
+.btn-submit:disabled {
+  opacity: 0.45;
+  cursor: not-allowed;
+}
+
+.btn-submit:not(:disabled):hover {
+  background: var(--color-primary-hover, var(--color-primary));
+}
+
+.btn-cancel {
+  background: none;
+  border: none;
+  color: var(--color-text-muted);
+  font-size: 0.9rem;
+  cursor: pointer;
+  text-decoration: underline;
+  padding: 0;
+}
+</style>