diff --git a/scripts/objects/gift_box.gd b/scripts/objects/gift_box.gd
index d76ba80..98cbdf8 100644
--- a/scripts/objects/gift_box.gd
+++ b/scripts/objects/gift_box.gd
@@ -1,11 +1,14 @@
 ## GiftBox — tap while closed to open: lid rises and fades out, gift inside fades in.
+## Auto-resets after RESET_DELAY seconds.
 class_name GiftBox extends Node2D
 
-enum State { CLOSED, OPENING, OPEN }
+enum State { CLOSED, OPENING, RESETTING }
 
 const LID_OPEN_Y: float = -120.0
+const CLOSED_LID_Y: float = -60.0
 const OPEN_DURATION: float = 0.5
 const GIFT_FADE_DURATION: float = 0.4
+const RESET_DELAY: float = 3.0
 const BUTTON_HALF_WIDTH: float = 40.0
 const BUTTON_HALF_HEIGHT: float = 50.0
 
@@ -37,7 +40,7 @@ func _start_opening() -> void:
 	_state = State.OPENING
 	var lid: Node2D = get_node_or_null("Lid") as Node2D
 	if lid == null:
-		_state = State.OPEN
+		_on_lid_opened()
 		return
 	var tween: Tween = create_tween()
 	tween.set_ease(Tween.EASE_OUT)
@@ -48,9 +51,26 @@ func _start_opening() -> void:
 
 
 func _on_lid_opened() -> void:
-	_state = State.OPEN
+	_state = State.RESETTING
 	var gift: Node2D = get_node_or_null("Gift") as Node2D
-	if gift == null:
-		return
 	var tween: Tween = create_tween()
-	tween.tween_property(gift, "modulate:a", 1.0, GIFT_FADE_DURATION)
+	if gift != null:
+		tween.tween_property(gift, "modulate:a", 1.0, GIFT_FADE_DURATION)
+	tween.tween_interval(RESET_DELAY)
+	tween.tween_callback(_start_close_lid)
+
+
+func _start_close_lid() -> void:
+	var lid: Node2D = get_node_or_null("Lid") as Node2D
+	var gift: Node2D = get_node_or_null("Gift") as Node2D
+	var tween: Tween = create_tween().set_parallel(true)
+	if lid != null:
+		tween.tween_property(lid, "position:y", CLOSED_LID_Y, OPEN_DURATION)
+		tween.tween_property(lid, "modulate:a", 1.0, OPEN_DURATION)
+	if gift != null:
+		tween.tween_property(gift, "modulate:a", 0.0, OPEN_DURATION)
+	tween.finished.connect(_on_reset_complete)
+
+
+func _on_reset_complete() -> void:
+	_state = State.CLOSED
diff --git a/test/unit/test_gift_box.gd b/test/unit/test_gift_box.gd
index e4ca149..07c981e 100644
--- a/test/unit/test_gift_box.gd
+++ b/test/unit/test_gift_box.gd
@@ -1,4 +1,4 @@
-## Tests for GiftBox — CLOSED/OPENING/OPEN state machine transitions.
+## Tests for GiftBox — CLOSED/OPENING/RESETTING state machine transitions.
 extends GutTest
 
 var _box: GiftBox
@@ -23,10 +23,10 @@ func test_start_opening_transitions_to_opening() -> void:
 	assert_eq(_box._state, GiftBox.State.OPENING)
 
 
-func test_on_lid_opened_transitions_to_open() -> void:
+func test_on_lid_opened_transitions_to_resetting() -> void:
 	_box._start_opening()
 	_box._on_lid_opened()
-	assert_eq(_box._state, GiftBox.State.OPEN)
+	assert_eq(_box._state, GiftBox.State.RESETTING)
 
 
 func test_input_ignored_when_state_is_opening() -> void:
@@ -38,13 +38,13 @@ func test_input_ignored_when_state_is_opening() -> void:
 	assert_eq(_box._state, GiftBox.State.OPENING)
 
 
-func test_input_ignored_when_state_is_open() -> void:
-	_box._state = GiftBox.State.OPEN
+func test_input_ignored_when_state_is_resetting() -> void:
+	_box._state = GiftBox.State.RESETTING
 	var event: InputEventScreenTouch = InputEventScreenTouch.new()
 	event.pressed = true
 	event.position = _box.global_position
 	_box._input(event)
-	assert_eq(_box._state, GiftBox.State.OPEN)
+	assert_eq(_box._state, GiftBox.State.RESETTING)
 
 
 func test_tap_outside_hitbox_does_not_open() -> void:
@@ -61,3 +61,9 @@ func test_release_event_does_not_open() -> void:
 	event.position = _box.global_position
 	_box._input(event)
 	assert_eq(_box._state, GiftBox.State.CLOSED)
+
+
+func test_on_reset_complete_transitions_to_closed() -> void:
+	_box._state = GiftBox.State.RESETTING
+	_box._on_reset_complete()
+	assert_eq(_box._state, GiftBox.State.CLOSED)