diff --git a/build/Talkpal.html b/build/Talkpal.html
index 54c2875..fa81333 100644
--- a/build/Talkpal.html
+++ b/build/Talkpal.html
@@ -98,7 +98,7 @@ body {
 
 		<script src="Talkpal.js"></script>
 		<script>
-const GODOT_CONFIG = {"args":[],"canvasResizePolicy":2,"ensureCrossOriginIsolationHeaders":true,"executable":"Talkpal","experimentalVK":true,"fileSizes":{"Talkpal.pck":6408288,"Talkpal.wasm":43016933},"focusCanvas":true,"gdextensionLibs":[],"serviceWorker":"Talkpal.service.worker.js"};
+const GODOT_CONFIG = {"args":[],"canvasResizePolicy":2,"ensureCrossOriginIsolationHeaders":true,"executable":"Talkpal","experimentalVK":true,"fileSizes":{"Talkpal.pck":6411152,"Talkpal.wasm":43016933},"focusCanvas":true,"gdextensionLibs":[],"serviceWorker":"Talkpal.service.worker.js"};
 const GODOT_THREADS_ENABLED = false;
 const engine = new Engine(GODOT_CONFIG);
 
diff --git a/build/Talkpal.js b/build/Talkpal.js
index 7a89db1..3eef18d 100644
--- a/build/Talkpal.js
+++ b/build/Talkpal.js
@@ -107,6 +107,9 @@ const Features = {
 		if (!Features.isFetchAvailable()) {
 			missing.push('Fetch - Check web browser version');
 		}
+		if (!Features.isSecureContext()) {
+			missing.push('Secure Context - Check web server configuration (use HTTPS)');
+		}
 
 		if (supportsThreads) {
 			if (!Features.isCrossOriginIsolated()) {
diff --git a/build/Talkpal.pck b/build/Talkpal.pck
index ed8b0b7..621ff8b 100644
Binary files a/build/Talkpal.pck and b/build/Talkpal.pck differ
diff --git a/build/Talkpal.service.worker.js b/build/Talkpal.service.worker.js
index d973821..3810780 100644
--- a/build/Talkpal.service.worker.js
+++ b/build/Talkpal.service.worker.js
@@ -4,7 +4,7 @@
 // Incrementing CACHE_VERSION will kick off the install event and force
 // previously cached resources to be updated from the network.
 /** @type {string} */
-const CACHE_VERSION = '1742901707|150096318';
+const CACHE_VERSION = '1743075308|11252545514';
 /** @type {string} */
 const CACHE_PREFIX = 'Talkpal-sw-cache-';
 const CACHE_NAME = CACHE_PREFIX + CACHE_VERSION;
diff --git a/scenes/board/rooms_menu.gd b/scenes/board/rooms_menu.gd
index e0d73b2..fc2925b 100644
--- a/scenes/board/rooms_menu.gd
+++ b/scenes/board/rooms_menu.gd
@@ -10,7 +10,7 @@ func _process(delta):
 func _process_items_font_size():
 	var default_font_size = _items.get_theme_default_font_size()
 	var font_size = _items.get_theme_font_size("font_size")
-	var new_font_size = get_viewport_rect().size.y/30
+	var new_font_size = get_viewport_rect().size.y/25
 	if font_size != new_font_size:
 		_items.add_theme_font_size_override("font_size", new_font_size)
 
diff --git a/scenes/common/edit_field.tscn b/scenes/common/edit_field.tscn
index c8fbacf..9a3894b 100644
--- a/scenes/common/edit_field.tscn
+++ b/scenes/common/edit_field.tscn
@@ -36,7 +36,7 @@ text = " "
 [node name="FieldLabel" type="Label" parent="Container/FieldLabelControl"]
 layout_mode = 2
 theme = ExtResource("3_4sp4y")
-theme_override_font_sizes/font_size = 16
+theme_override_font_sizes/font_size = 15
 
 [node name="Value" type="VBoxContainer" parent="Container"]
 layout_mode = 2
@@ -46,7 +46,7 @@ layout_mode = 2
 size_flags_horizontal = 3
 size_flags_vertical = 3
 theme = ExtResource("2_iq8f3")
-theme_override_font_sizes/font_size = 16
+theme_override_font_sizes/font_size = 15
 max_length = 32
 selecting_enabled = false
 
@@ -55,7 +55,7 @@ visible = false
 layout_mode = 2
 size_flags_horizontal = 3
 theme = ExtResource("2_iq8f3")
-theme_override_font_sizes/font_size = 16
+theme_override_font_sizes/font_size = 15
 wrap_mode = 1
 scroll_fit_content_height = true
 
diff --git a/scenes/common/error_box.gd b/scenes/common/error_box.gd
index a90ba6a..9a7bb0a 100644
--- a/scenes/common/error_box.gd
+++ b/scenes/common/error_box.gd
@@ -4,6 +4,13 @@ extends HBoxContainer
 
 var _text : String
 
+func _process(delta):
+	_process_error_label_font_size()
+
+func _process_error_label_font_size():
+	var new_font_size = get_viewport_rect().size.y*(8.0/475.0) + 250.0/19.0
+	_error_label.add_theme_font_size_override("font_size", new_font_size)
+
 func _ready():
 	set_message(String())
 
diff --git a/scenes/common/error_box.tscn b/scenes/common/error_box.tscn
index 514af89..cf7a4fa 100644
--- a/scenes/common/error_box.tscn
+++ b/scenes/common/error_box.tscn
@@ -1,8 +1,10 @@
-[gd_scene load_steps=2 format=3 uid="uid://e73v63ysty2e"]
+[gd_scene load_steps=3 format=3 uid="uid://e73v63ysty2e"]
 
 [ext_resource type="Theme" uid="uid://cmhwbyqu6nh38" path="res://assets/themes/big.tres" id="1_bo38g"]
+[ext_resource type="Script" path="res://scenes/common/error_box.gd" id="1_lkwa6"]
 
 [node name="ErrorBox" type="HBoxContainer"]
+script = ExtResource("1_lkwa6")
 
 [node name="Control" type="Control" parent="."]
 custom_minimum_size = Vector2(25, 0)
diff --git a/scenes/common/time/time_edit.tscn b/scenes/common/time/time_edit.tscn
index ec39e9f..9b809a1 100644
--- a/scenes/common/time/time_edit.tscn
+++ b/scenes/common/time/time_edit.tscn
@@ -14,7 +14,7 @@ script = ExtResource("1_2wxyg")
 [node name="TimeEdit" type="LineEdit" parent="."]
 visible = false
 layout_mode = 2
-text = "10:34 "
+text = "11:27 "
 placeholder_text = "hh:mm (a/p)m"
 script = ExtResource("2_7d4ae")
 current_time = true
@@ -24,3 +24,8 @@ layout_mode = 2
 size_flags_horizontal = 3
 theme = ExtResource("3_bpvuo")
 virtual_keyboard_enabled = false
+
+[connection signal="mouse_entered" from="TimeEdit/Clock" to="TimeEdit/Clock" method="_on_mouse_entered"]
+[connection signal="mouse_exited" from="TimeEdit/Clock" to="TimeEdit/Clock" method="_on_mouse_exited"]
+[connection signal="visibility_changed" from="TimeEdit/Clock" to="TimeEdit/Clock" method="_on_visibility_changed"]
+[connection signal="draw" from="TimeEdit/ManualClock" to="TimeEdit/ManualClock" method="_on_draw"]
diff --git a/scenes/main/main.gd b/scenes/main/main.gd
index b63c152..538d3a6 100644
--- a/scenes/main/main.gd
+++ b/scenes/main/main.gd
@@ -13,6 +13,9 @@ enum Pages {
 func get_current_page():
 	pass
 
+func get_previous_page():
+	pass
+
 func load_page(value, with_update=true):
 	pass
 
@@ -37,6 +40,9 @@ func get_selected_date() -> String:
 func get_selected_room() -> RoomEntity:
 	return RoomEntity.new()
 
+func get_current_date() -> String:
+	return ""
+
 func is_current_date_selected() -> bool:
 	return true
 
diff --git a/scenes/main/main_tablet.gd b/scenes/main/main_tablet.gd
index 4473514..dceabe3 100644
--- a/scenes/main/main_tablet.gd
+++ b/scenes/main/main_tablet.gd
@@ -42,6 +42,7 @@ enum Status {
 @onready var _background := $Background
 
 @onready var _create_reservation_button := $RightBottom/CreateReservationButton
+@onready var _reserve_now_label := $Left/TimeStatusContainer/ReserveNowBox/ReserveNowLabel
 @onready var _15_min_button := $Left/TimeStatusContainer/ReserveNowBox/InstantButtons/_15min
 @onready var _30_min_button := $Left/TimeStatusContainer/ReserveNowBox/InstantButtons/_30min
 @onready var _45_min_button := $Left/TimeStatusContainer/ReserveNowBox/InstantButtons/_45min
@@ -149,6 +150,9 @@ func _process_font_size(obj, k):
 func get_current_page():
 	return _current_page
 
+func get_previous_page():
+	return _previous_page
+
 func load_page(value, with_update=true):
 	var previous_page = _current_page
 
@@ -162,7 +166,8 @@ func load_page(value, with_update=true):
 
 	hide_keyboard()
 	_change_page_with_delay(previous_page)
-	_change_create_reservation_buttion_visibility(_current_page)
+	_change_create_reservation_button_visibility(_current_page)
+	_update_reserve_now_label_text()
 
 	return _pages[_current_page]
 
@@ -171,7 +176,7 @@ func _change_page_with_delay(previous_page):
 	_pages[previous_page].visible = false
 	_pages[_current_page].visible = true
 
-func _change_create_reservation_buttion_visibility(page: Pages):
+func _change_create_reservation_button_visibility(page: Pages):
 	if page == Pages.Board:
 		_create_reservation_button.show()
 	else:
@@ -199,7 +204,16 @@ func _set_time_status_indent(value):
 func _get_time_status_indent():
 	return _time_status_indent.custom_minimum_size.y
 
-func _create_default_reservation(minutes_of_reservation):
+func _create_default_reservation(minutes_of_reservation: int):
+	if _current_page == Pages.ReservationCreation:
+		var start_time = _pages[_current_page].get_start_time()
+		_extend_finish_time_for(start_time, minutes_of_reservation)
+		return
+	elif _current_page == Pages.ReservationEdit:
+		var finish_time = _pages[_current_page].get_finish_time()
+		_extend_finish_time_for(finish_time, minutes_of_reservation)
+		return
+
 	if _status == Status.BUSY:
 		return
 
@@ -229,6 +243,14 @@ func _create_default_reservation(minutes_of_reservation):
 
 	load_page(Main.Pages.Board, true)
 
+func _extend_finish_time_for(time: Dictionary, minutes_of_reservation: int):
+	var time_in_minutes = time.hours * 60 + time.minutes
+	var new_time_in_minutes = time_in_minutes + minutes_of_reservation
+	var new_time_hours = floor(new_time_in_minutes/60)
+	var new_time_minutes = new_time_in_minutes - new_time_hours * 60
+	var new_time = {"hours": new_time_hours, "minutes": new_time_minutes}
+	_pages[_current_page].set_finish_time(new_time)
+
 func get_selected_date() -> String:
 	return _selected_date
 
@@ -271,3 +293,11 @@ func _on_date_selected(date: Calendar.DateObj):
 	_selected_date = "%02d.%02d.%04d" % [date.day, date.month, date.year]
 	_pages[Pages.CalendarSetting].date_selected.disconnect(_on_date_selected)
 	_pages[Pages.Board].update_date()
+
+func _update_reserve_now_label_text():
+	if _current_page == Pages.ReservationCreation:
+		_reserve_now_label.text = "Забронировать на"
+	elif _current_page == Pages.ReservationEdit:
+		_reserve_now_label.text = "Продлить на"
+	else:
+		_reserve_now_label.text = "Забронировать сейчас на"
diff --git a/scenes/main/main_tablet.tscn b/scenes/main/main_tablet.tscn
index c8e7f8f..10fa520 100644
--- a/scenes/main/main_tablet.tscn
+++ b/scenes/main/main_tablet.tscn
@@ -85,14 +85,14 @@ size_flags_horizontal = 10
 size_flags_vertical = 0
 
 [node name="Indent" type="BoxContainer" parent="Left/TimeStatusContainer"]
-custom_minimum_size = Vector2(0, 195)
+custom_minimum_size = Vector2(0, 177.333)
 layout_mode = 2
 size_flags_vertical = 3
 
 [node name="TimeLabel" type="Label" parent="Left/TimeStatusContainer"]
 layout_mode = 2
 theme = ExtResource("5_atujq")
-text = "12:15"
+text = "14:35"
 horizontal_alignment = 1
 
 [node name="StatusLabel" type="Label" parent="Left/TimeStatusContainer"]
@@ -157,7 +157,7 @@ grow_vertical = 0
 [node name="CreateReservationButton" type="Button" parent="RightBottom"]
 layout_mode = 2
 theme = ExtResource("9_wpf8g")
-theme_override_font_sizes/font_size = 16
+theme_override_font_sizes/font_size = 15
 text = "   Забронировать   "
 
 [node name="Repos" type="Node" parent="."]
diff --git a/scenes/reservation/reservation_creation.tscn b/scenes/reservation/reservation_creation.tscn
index 9246de7..f97caf6 100644
--- a/scenes/reservation/reservation_creation.tscn
+++ b/scenes/reservation/reservation_creation.tscn
@@ -1,10 +1,9 @@
-[gd_scene load_steps=9 format=3 uid="uid://csfn8q6b5hj4y"]
+[gd_scene load_steps=8 format=3 uid="uid://csfn8q6b5hj4y"]
 
 [ext_resource type="Theme" uid="uid://cmhwbyqu6nh38" path="res://assets/themes/big.tres" id="1_j1bkw"]
 [ext_resource type="Script" path="res://scenes/reservation/reservation_page.gd" id="1_prqr3"]
 [ext_resource type="PackedScene" uid="uid://d0fdiesiaajlq" path="res://scenes/common/edit_field.tscn" id="2_qfs8j"]
 [ext_resource type="PackedScene" uid="uid://e73v63ysty2e" path="res://scenes/common/error_box.tscn" id="4_ja64k"]
-[ext_resource type="Script" path="res://scenes/common/error_box.gd" id="5_bbsyh"]
 
 [sub_resource type="StyleBoxFlat" id="StyleBoxFlat_dlqbv"]
 bg_color = Color(0.6, 0.6, 0.6, 0)
@@ -125,7 +124,6 @@ theme_override_styles/panel = SubResource("StyleBoxFlat_r7q2r")
 
 [node name="ErrorBox" parent="." instance=ExtResource("4_ja64k")]
 layout_mode = 2
-script = ExtResource("5_bbsyh")
 
 [node name="BottomBar" type="Control" parent="."]
 custom_minimum_size = Vector2(1150, 0)
diff --git a/scenes/reservation/reservation_edit.tscn b/scenes/reservation/reservation_edit.tscn
index 3a752b4..c964303 100644
--- a/scenes/reservation/reservation_edit.tscn
+++ b/scenes/reservation/reservation_edit.tscn
@@ -1,10 +1,9 @@
-[gd_scene load_steps=8 format=3 uid="uid://cu6e3hfdorwcg"]
+[gd_scene load_steps=7 format=3 uid="uid://cu6e3hfdorwcg"]
 
 [ext_resource type="Script" path="res://scenes/reservation/reservation_page.gd" id="1_81iob"]
 [ext_resource type="Theme" uid="uid://cmhwbyqu6nh38" path="res://assets/themes/big.tres" id="2_57fpn"]
 [ext_resource type="PackedScene" uid="uid://d0fdiesiaajlq" path="res://scenes/common/edit_field.tscn" id="3_lh5s8"]
 [ext_resource type="PackedScene" uid="uid://e73v63ysty2e" path="res://scenes/common/error_box.tscn" id="4_vg752"]
-[ext_resource type="Script" path="res://scenes/common/error_box.gd" id="5_xmu5c"]
 
 [sub_resource type="StyleBoxFlat" id="StyleBoxFlat_dlqbv"]
 bg_color = Color(0.6, 0.6, 0.6, 0)
@@ -119,7 +118,6 @@ theme_override_styles/panel = SubResource("StyleBoxFlat_yafv8")
 
 [node name="ErrorBox" parent="." instance=ExtResource("4_vg752")]
 layout_mode = 2
-script = ExtResource("5_xmu5c")
 
 [node name="BottomBar" type="Control" parent="."]
 custom_minimum_size = Vector2(1150, 0)
diff --git a/scenes/reservation/reservation_page.gd b/scenes/reservation/reservation_page.gd
index faace04..59edaa2 100644
--- a/scenes/reservation/reservation_page.gd
+++ b/scenes/reservation/reservation_page.gd
@@ -25,6 +25,8 @@ enum Types {
 @onready var _room_field := $RoomField
 @onready var _description_field := $DescriptionField
 
+var _reservation : ReservationEntity = null
+
 func _process(delta):
 	_process_fonts()
 	_process_separation()
@@ -44,7 +46,7 @@ func _process_font_size(obj, k):
 
 func _process_separation():
 	var separation = get_theme_constant("separation")
-	var new_separation = get_viewport_rect().size.y/28
+	var new_separation = get_viewport_rect().size.y*(1.0/19.0) - 715.0/19.0
 	if separation != new_separation:
 		add_theme_constant_override("separation", new_separation)
 
@@ -75,17 +77,17 @@ func _on_delete_button_pressed():
 func _load_info():
 	var reservation_repo = _main.get_reservation_repo()
 	var reservation_id = reservation_repo.get_selected_reservation_id()
-	var reservation = await reservation_repo.get_reservation(reservation_id)
+	_reservation = await reservation_repo.get_reservation(reservation_id)
 
 	var room_repo = _main.get_room_repo()
-	var room = await room_repo.get_room(reservation.room_id)
+	var room = await room_repo.get_room(_reservation.room_id)
 	var room_title = room.title if room != null else ""
 
-	_title_field.set_value(reservation.title)
-	_start_time_field.set_value(reservation.start_time)
-	_finish_time_field.set_value(reservation.finish_time)
-	_room_field.set_value({"title": room_title, "id": reservation.room_id})
-	_date_field.set_value(reservation.date)
+	_title_field.set_value(_reservation.title)
+	_start_time_field.set_value(_reservation.start_time)
+	_finish_time_field.set_value(_reservation.finish_time)
+	_date_field.set_value(_reservation.date)
+	_room_field.set_value({"title": room_title, "id": _reservation.room_id})
 
 func _load_room():
 	if _room_field.get_value().title == "":
@@ -96,11 +98,6 @@ func _load_date():
 	if _date_field.get_value() == "":
 		_date_field.set_value(_main.get_selected_date())
 
-func _get_current_room_id():
-	var room_repo = _main.get_room_repo()
-	var room = room_repo.get_selected_room()
-	return room.id if room != null else null
-
 func _create_reservation():
 	if not await _fields_are_correct():
 		return
@@ -158,9 +155,7 @@ func _delete_reservation():
 func _fields_are_correct():
 	var successful := true
 
-	#if len(_title_field.get_value()) < 1:
-	#	print("The title is not entered.")
-	#	_error_box.set_message("Не введено название встречи")
+	#if not _title_is_correct():
 	#	successful = false
 
 	if not await _time_is_correct():
@@ -168,18 +163,77 @@ func _fields_are_correct():
 
 	return successful
 
+func _title_is_correct():
+	if len(_title_field.get_value()) < 1:
+		print("The title is not entered.")
+		_error_box.set_message("Не введено название встречи")
+		return false
+
+	return true
+
 func _time_is_correct():
 	var start_time = _start_time_field.get_value()
 	var finish_time = _finish_time_field.get_value()
 
+	if _time_is_not_entered(start_time, finish_time):
+		return false
+
+	if _time_or_date_is_before_now(start_time):
+		return false
+
+	if _start_time_is_after_finish_time(start_time, finish_time):
+		return false
+
+	if await _selected_time_is_busy(start_time, finish_time):
+		return false
+
+	return true
+
+func _time_is_not_entered(start_time: Dictionary, finish_time: Dictionary):
 	var time_is_not_entered = \
 		start_time["hours"] == 0 and start_time["minutes"] == 0 or \
 		finish_time["hours"] == 0 and finish_time["minutes"] == 0
 
 	if time_is_not_entered:
 		_error_box.set_message("Введите время начала и окончания встречи")
-		return false
+		return true
+	
+	return false
 
+func _time_or_date_is_before_now(start_time: Dictionary):
+	var time_is_before_now = _time_is_before_current_time(start_time)
+	var date_is_before_now = _date_is_before_current_date(_date_field.get_value())
+
+	if time_is_before_now or date_is_before_now:
+		_error_box.set_message("Нельзя зарезервировать на прошедшее время")
+		return true
+
+	return false
+
+func _time_is_before_current_time(time) -> bool:
+	if _main.get_current_page() == Main.Pages.ReservationEdit and _reservation:
+		var selected_start_time = get_start_time()
+		if selected_start_time.hours == _reservation.start_time.hours and \
+		selected_start_time.minutes == _reservation.start_time.minutes:
+			return false
+
+	var current_time = Time.get_time_dict_from_system()
+	var time_in_minutes = time.hours*60 + time.minutes
+	var current_time_in_minutes = current_time.hour*60 + current_time.minute
+
+	return time_in_minutes < current_time_in_minutes
+
+func _date_is_before_current_date(date: String) -> bool:
+	var current_date = _main.get_current_date()
+	return _date_to_number(date) < _date_to_number(current_date)
+
+func _date_to_number(date_str: String) -> int:
+	var parts = date_str.split(".")
+	assert(parts.size() == 3, "Некорректная дата: " + date_str)
+	
+	return int(parts[2] + parts[1].lpad(2, "0") + parts[0].lpad(2, "0"))
+
+func _start_time_is_after_finish_time(start_time: Dictionary, finish_time: Dictionary):
 	var start_time_is_after_finish_time = \
 		start_time["hours"] > finish_time["hours"] or \
 		(start_time["hours"] == finish_time["hours"] and \
@@ -188,8 +242,11 @@ func _time_is_correct():
 	if start_time_is_after_finish_time:
 		print("Start time should not be more than or equal to finish time.")
 		_error_box.set_message("Время начала не может быть больше времени окончания")
-		return false
+		return true
 
+	return false
+
+func _selected_time_is_busy(start_time: Dictionary, finish_time: Dictionary):
 	var start_time_in_minutes = start_time.hours*60 + start_time.minutes
 	var finish_time_in_minutes = finish_time.hours*60 + finish_time.minutes
 	var service = _main.get_reservation_service()
@@ -201,17 +258,26 @@ func _time_is_correct():
 	if is_busy:
 		print("The selected time slot is busy.")
 		_error_box.set_message("Выбранный временной интервал занят")
-		return false
+		return true
 
-	return true
+	return false
 
-func set_start_time(value):
+func get_start_time() -> Dictionary:
+	return _start_time_field.get_value()
+
+func get_finish_time() -> Dictionary:
+	return _finish_time_field.get_value()
+
+func set_start_time(value) -> void:
 	_start_time_field.set_value(value)
 
+func set_finish_time(value) -> void:
+	_finish_time_field.set_value(value)
+
 func update():
 	_ready()
 
-	if type == Types.Edit:
+	if type == Types.Edit and _main.get_previous_page() == Main.Pages.Board:
 		_load_info()
 	else:
 		_load_room()