diff --git a/bingo.py b/bingo.py
index 1f4eec1..0910281 100644
--- a/bingo.py
+++ b/bingo.py
@@ -1,17 +1,23 @@
 #!/usr/bin/env python3
 
 from textual.app import App, ComposeResult
-from textual.widgets import Header, Footer, Button, Label, Switch, Static
-from textual.containers import ScrollableContainer
+from textual.widgets import Header, Input, Static, Button
+from textual.widget import Widget
 from textual.message import Message
-from textual.color import Color
+from textual.containers import Horizontal
+from textual.validation import Number
+from textual.reactive import reactive
 
 from asyncio import sleep
 
+from datetime import datetime
+import random
+
 class BingoField(Static):
     """A Bingo field widget."""
     
-    cursor_x, cursor_y = 2
+    cursor_x, cursor_y = 2, 2
+    text = reactive("temp")
 
     class Selected(Message):
         """Send message to the board containing clicked field info"""
@@ -21,10 +27,10 @@ class BingoField(Static):
             super().__init__()
 
     def __init__(self, num, text: str) -> None:
-        self.text = text
         self.num = num
         self.selected = False
         super().__init__()
+        self.text = text
 
     def on_mount(self) -> None:
         self.styles.content_align = ("center", "middle")
@@ -48,54 +54,102 @@ class BingoField(Static):
         return str(self.text)
 
 class BingoApp(App):
-    """A Textual app to manage stopwatches."""
+    """A Textual app to run a Bingo board."""
     CSS_PATH = "bingo.tcss"
 
-    BINDINGS = [("d", "toggle_dark", "Toggle dark mode")]
-
-    fieldstate = [False for _ in range(25)]
-
-    fields = [
-        'Datenelch',
-        '6 Stunden Schlaf',
-        'Tschunk getrunken',
-        'Spaß gehabt',
-        'Sticker getauscht',
-        'DECT genutzt',
-        'Hardware gehackt',
-        'Kabel vergessen',
-        'Halle gesucht',
-        '$dinge gelötet',
-        'an SoS teilgenommen',
-        'Neue Leute kennengelernt',
-        'Wasser getrunken',
-        'Waffel gegessen',
-        'Corona Test gemacht',
-        '2 Mahlzeiten gegessen',
-        'Fairydust bewundert',
-        'Talk angeschaut',
-        'CCC Merch getragen',
-        'getrollt',
-        'In der Lounge getanzt',
-        'Etwas Neues ausprobiert',
-        'Maske getragen',
-        'geduscht',
-        'Gulasch gegessen'
-    ]
-    
-    # todo: prng stuff
-    import random
-    random.shuffle(fields)
-
     def compose(self) -> ComposeResult:
         """Create child widgets for the app."""
         yield Header()
+        yield BingoDisplay()
+
+    def action_toggle_dark(self) -> None:
+        """An action to toggle dark mode."""
+        self.dark = not self.dark
+
+class BingoDisplay(Static):
+    def compose(self) -> ComposeResult:
+        """Create child widgets for the app."""
+        self.board = BingoBoard()
+        yield self.board
+        self.input_field = Input(
+                str(self.board.seed),
+                type='integer',
+                placeholder='UNIX timestamp',
+                max_length=10,
+                classes='seed_input',
+                validators=[
+                    Number(minimum=1000000000, maximum = 2000000000)
+                ]
+        )
+        self.input_field.border_title = 'Seed'
+        yield Horizontal(
+            self.input_field,
+            Button.error(':game_die: re-roll', classes='roll_btn'),
+            classes='bottom_line'
+        )
+
+    def on_button_pressed(self, event: Button.Pressed) -> None:
+        """"""
+        # reroll
+        self.board.roll_board(int(datetime.now().timestamp()))
+        self.input_field.value = str(self.board.seed)
+
+    def on_input_submitted(self, event: Input.Submitted) -> None:
+        if event.validation_result.is_valid:
+            self.board.roll_board(int(event.value))
+
+class BingoBoard(Widget):
+
+    fields = reactive([], recompose = True)
+
+    def __init__(self) -> None:
+        self.fieldstate = [False for _ in range(25)]
+        super().__init__()
+        self.fields = [
+                'Datenelch',
+                '6 Stunden Schlaf',
+                'Tschunk getrunken',
+                'Spaß gehabt',
+                'Sticker getauscht',
+                'DECT genutzt',
+                'Hardware gehackt',
+                'Kabel vergessen',
+                'Halle gesucht',
+                '$dinge gelötet',
+                'an SoS teilgenommen',
+                'Neue Leute kennengelernt',
+                'Wasser getrunken',
+                'Waffel gegessen',
+                'Corona Test gemacht',
+                '2 Mahlzeiten gegessen',
+                'Fairydust bewundert',
+                'Talk angeschaut',
+                'CCC Merch getragen',
+                'getrollt',
+                'In der Lounge getanzt',
+                'Etwas Neues ausprobiert',
+                'Maske getragen',
+                'geduscht',
+                'Gulasch gegessen'
+            ]
+        self.default_fields = self.fields
+        self.roll_board(int(datetime.now().timestamp()))
+
+    def roll_board(self, seed):
+        self.seed = seed
+        random.seed(seed)
+        self.fields = random.sample(self.default_fields, len(self.fields))
+
+    def watch_fields(self, new_state) -> None:
+        self.fieldstate = [False for _ in range(25)]
+        for idx, field in enumerate(self.query(BingoField)):
+            field.text = new_state[idx]
 
+    def compose(self) -> ComposeResult:
+        """Create child widgets for the app."""
         for _ in range(25):
             yield BingoField(_, self.fields[_])
 
-        yield Footer()
-
     async def on_bingo_field_selected(self, message: BingoField.Selected) -> None:
         self.fieldstate[message.num] = message.selected
         if self.is_bingo():
@@ -139,10 +193,6 @@ class BingoApp(App):
         ])
         return bingo
 
-    def action_toggle_dark(self) -> None:
-        """An action to toggle dark mode."""
-        self.dark = not self.dark
-
 if __name__ == "__main__":
     app = BingoApp()
     app.run()
diff --git a/bingo.tcss b/bingo.tcss
index 1f8dd44..5161d28 100644
--- a/bingo.tcss
+++ b/bingo.tcss
@@ -1,6 +1,25 @@
-Screen {
+BingoBoard {
     layout: grid;
     grid-size: 5 5;
+    height: 100%;
+}
+
+BingoDisplay {
+    layout: vertical;
+    height: 100%;
+}
+
+.bottom_line {
+    height: auto;
+    dock: bottom;
+}
+
+.seed_input {
+  width: 70%;
+  border-title-align: left;
+}
+.roll_btn {
+  width: 30%;
 }
 
 .box {
@@ -9,3 +28,10 @@ Screen {
     text-align: center;
     content-align: center middle;
 }
+
+Input.-valid {
+    border: tall $success 60%;
+}
+Input.-valid:focus {
+    border: tall $success;
+}