diff --git a/adapters/src/wayland/config.rs b/adapters/src/wayland/config.rs
index f9e418b..f04c2a0 100644
--- a/adapters/src/wayland/config.rs
+++ b/adapters/src/wayland/config.rs
@@ -40,7 +40,7 @@ impl WaylandWindowConfig {
         domain_config: DomainWindowConfig,
     ) -> Self {
         Self {
-            height: domain_config.height,
+            height: domain_config.height.value(),
             layer: convert_layer(domain_config.layer),
             margin: domain_config.margin,
             anchor: convert_anchor(domain_config.anchor),
@@ -48,7 +48,7 @@ impl WaylandWindowConfig {
                 domain_config.keyboard_interactivity,
             ),
             exclusive_zone: domain_config.exclusive_zone,
-            scale_factor: domain_config.scale_factor,
+            scale_factor: domain_config.scale_factor.value(),
             namespace: domain_config.namespace,
             component_definition,
             compilation_result,
diff --git a/adapters/src/wayland/surfaces/dimensions.rs b/adapters/src/wayland/surfaces/dimensions.rs
index 5e54b61..75cf1cb 100644
--- a/adapters/src/wayland/surfaces/dimensions.rs
+++ b/adapters/src/wayland/surfaces/dimensions.rs
@@ -2,16 +2,16 @@ use layer_shika_domain::surface_dimensions::SurfaceDimensions;
 use slint::PhysicalSize;
 
 pub trait SurfaceDimensionsExt {
-    fn logical_size(&self) -> PhysicalSize;
-    fn physical_size(&self) -> PhysicalSize;
+    fn to_slint_logical_size(&self) -> PhysicalSize;
+    fn to_slint_physical_size(&self) -> PhysicalSize;
 }
 
 impl SurfaceDimensionsExt for SurfaceDimensions {
-    fn logical_size(&self) -> PhysicalSize {
-        PhysicalSize::new(self.logical_width, self.logical_height)
+    fn to_slint_logical_size(&self) -> PhysicalSize {
+        PhysicalSize::new(self.logical_width(), self.logical_height())
     }
 
-    fn physical_size(&self) -> PhysicalSize {
-        PhysicalSize::new(self.physical_width, self.physical_height)
+    fn to_slint_physical_size(&self) -> PhysicalSize {
+        PhysicalSize::new(self.physical_width(), self.physical_height())
     }
 }
diff --git a/adapters/src/wayland/surfaces/surface_state.rs b/adapters/src/wayland/surfaces/surface_state.rs
index f4ae8ea..61b0117 100644
--- a/adapters/src/wayland/surfaces/surface_state.rs
+++ b/adapters/src/wayland/surfaces/surface_state.rs
@@ -12,7 +12,7 @@ use core::result::Result as CoreResult;
 use layer_shika_domain::errors::DomainError;
 use layer_shika_domain::ports::windowing::RuntimeStatePort;
 use layer_shika_domain::surface_dimensions::SurfaceDimensions;
-use log::info;
+use log::{error, info};
 use slint::{LogicalPosition, PhysicalSize, ComponentHandle};
 use slint::platform::{WindowAdapter, WindowEvent};
 use slint_interpreter::{ComponentInstance, CompilationResult};
@@ -179,22 +179,22 @@ impl WindowState {
                 self.window.set_scale_factor(self.scale_factor);
                 self.window
                     .set_size(slint::WindowSize::Logical(slint::LogicalSize::new(
-                        dimensions.logical_width as f32,
-                        dimensions.logical_height as f32,
+                        dimensions.logical_width() as f32,
+                        dimensions.logical_height() as f32,
                     )));
             }
             ScalingMode::FractionalOnly => {
-                self.window.set_scale_factor(dimensions.buffer_scale as f32);
+                self.window.set_scale_factor(dimensions.buffer_scale() as f32);
                 self.window
                     .set_size(slint::WindowSize::Logical(slint::LogicalSize::new(
-                        dimensions.logical_width as f32,
-                        dimensions.logical_height as f32,
+                        dimensions.logical_width() as f32,
+                        dimensions.logical_height() as f32,
                     )));
             }
             ScalingMode::Integer => {
                 self.window.set_scale_factor(self.scale_factor);
                 self.window
-                    .set_size(slint::WindowSize::Physical(dimensions.physical_size()));
+                    .set_size(slint::WindowSize::Physical(dimensions.to_slint_physical_size()));
             }
         }
     }
@@ -206,18 +206,18 @@ impl WindowState {
                 self.surface.set_buffer_scale(1);
                 if let Some(viewport) = &self.viewport {
                     viewport.set_destination(
-                        dimensions.logical_width as i32,
-                        dimensions.logical_height as i32,
+                        dimensions.logical_width() as i32,
+                        dimensions.logical_height() as i32,
                     );
                 }
             }
             ScalingMode::FractionalOnly | ScalingMode::Integer => {
-                self.surface.set_buffer_scale(dimensions.buffer_scale);
+                self.surface.set_buffer_scale(dimensions.buffer_scale());
             }
         }
 
         self.layer_surface
-            .set_size(dimensions.logical_width, dimensions.logical_height);
+            .set_size(dimensions.logical_width(), dimensions.logical_height());
         self.layer_surface.set_exclusive_zone(self.exclusive_zone);
         self.surface.commit();
     }
@@ -229,17 +229,23 @@ impl WindowState {
         }
 
         let scale_factor = self.scale_factor();
-        let dimensions = SurfaceDimensions::calculate(width, height, scale_factor);
+        let dimensions = match SurfaceDimensions::calculate(width, height, scale_factor) {
+            Ok(d) => d,
+            Err(e) => {
+                error!("Failed to calculate surface dimensions: {e}");
+                return;
+            }
+        };
         let scaling_mode = self.determine_scaling_mode();
 
         info!(
             "Updating window size: logical {}x{}, physical {}x{}, scale {}, buffer_scale {}, mode {:?}",
-            dimensions.logical_width,
-            dimensions.logical_height,
-            dimensions.physical_width,
-            dimensions.physical_height,
+            dimensions.logical_width(),
+            dimensions.logical_height(),
+            dimensions.physical_width(),
+            dimensions.physical_height(),
             scale_factor,
-            dimensions.buffer_scale,
+            dimensions.buffer_scale(),
             scaling_mode
         );
 
@@ -248,8 +254,8 @@ impl WindowState {
 
         info!("Window physical size: {:?}", self.window.size());
 
-        self.size = dimensions.physical_size();
-        self.logical_size = dimensions.logical_size();
+        self.size = dimensions.to_slint_physical_size();
+        self.logical_size = dimensions.to_slint_logical_size();
         self.window.request_redraw();
     }
 
diff --git a/composition/src/builder.rs b/composition/src/builder.rs
index 55524b6..8cc4268 100644
--- a/composition/src/builder.rs
+++ b/composition/src/builder.rs
@@ -3,7 +3,7 @@ use crate::system::WindowingSystem;
 use layer_shika_adapters::platform::slint_interpreter::{CompilationResult, Compiler};
 use layer_shika_domain::errors::DomainError;
 use layer_shika_domain::prelude::{
-    AnchorEdges, KeyboardInteractivity, Layer, Margins, WindowConfig,
+    AnchorEdges, KeyboardInteractivity, Layer, Margins, ScaleFactor, WindowConfig, WindowHeight,
 };
 use spin_on::spin_on;
 use std::path::{Path, PathBuf};
@@ -135,10 +135,9 @@ impl LayerShika<NeedsComponent> {
 }
 
 impl LayerShika<HasComponent> {
-    #[must_use]
-    pub const fn with_height(mut self, height: u32) -> Self {
-        self.config.height = height;
-        self
+    pub fn with_height(mut self, height: u32) -> Result<Self> {
+        self.config.height = WindowHeight::new(height)?;
+        Ok(self)
     }
 
     #[must_use]
@@ -176,10 +175,9 @@ impl LayerShika<HasComponent> {
         self
     }
 
-    #[must_use]
-    pub const fn with_scale_factor(mut self, scale_factor: f32) -> Self {
-        self.config.scale_factor = scale_factor;
-        self
+    pub fn with_scale_factor(mut self, scale_factor: f32) -> Result<Self> {
+        self.config.scale_factor = ScaleFactor::new(scale_factor)?;
+        Ok(self)
     }
 
     #[must_use]
diff --git a/domain/src/config.rs b/domain/src/config.rs
index 9c1908c..92ce3ec 100644
--- a/domain/src/config.rs
+++ b/domain/src/config.rs
@@ -1,14 +1,16 @@
+use crate::dimensions::ScaleFactor;
 use crate::value_objects::anchor::AnchorEdges;
+use crate::value_objects::dimensions::WindowHeight;
 use crate::value_objects::keyboard_interactivity::KeyboardInteractivity;
 use crate::value_objects::layer::Layer;
 use crate::value_objects::margins::Margins;
 
 #[derive(Debug, Clone)]
 pub struct WindowConfig {
-    pub height: u32,
+    pub height: WindowHeight,
     pub margin: Margins,
     pub exclusive_zone: i32,
-    pub scale_factor: f32,
+    pub scale_factor: ScaleFactor,
     pub namespace: String,
     pub layer: Layer,
     pub anchor: AnchorEdges,
@@ -19,11 +21,11 @@ impl WindowConfig {
     #[must_use]
     pub fn new() -> Self {
         Self {
-            height: 30,
+            height: WindowHeight::default(),
             margin: Margins::default(),
             exclusive_zone: -1,
             namespace: "layer-shika".to_owned(),
-            scale_factor: 1.0,
+            scale_factor: ScaleFactor::default(),
             layer: Layer::default(),
             anchor: AnchorEdges::default(),
             keyboard_interactivity: KeyboardInteractivity::default(),
diff --git a/domain/src/dimensions.rs b/domain/src/dimensions.rs
new file mode 100644
index 0000000..e56cc89
--- /dev/null
+++ b/domain/src/dimensions.rs
@@ -0,0 +1,233 @@
+use crate::errors::DomainError;
+
+#[derive(Debug, Clone, Copy, PartialEq)]
+pub struct LogicalSize {
+    width: f32,
+    height: f32,
+}
+
+impl LogicalSize {
+    pub fn new(width: f32, height: f32) -> Result<Self, DomainError> {
+        if width <= 0.0 || height <= 0.0 {
+            return Err(DomainError::InvalidInput {
+                message: format!("Dimensions must be positive, got width={width}, height={height}"),
+            });
+        }
+        if !width.is_finite() || !height.is_finite() {
+            return Err(DomainError::InvalidInput {
+                message: "Dimensions must be finite values".to_string(),
+            });
+        }
+        Ok(Self { width, height })
+    }
+
+    pub const fn from_raw(width: f32, height: f32) -> Self {
+        Self { width, height }
+    }
+
+    pub const fn width(&self) -> f32 {
+        self.width
+    }
+
+    pub const fn height(&self) -> f32 {
+        self.height
+    }
+
+    pub fn to_physical(&self, scale_factor: ScaleFactor) -> PhysicalSize {
+        scale_factor.to_physical(*self)
+    }
+
+    pub fn as_tuple(&self) -> (f32, f32) {
+        (self.width, self.height)
+    }
+}
+
+impl Default for LogicalSize {
+    fn default() -> Self {
+        Self {
+            width: 120.0,
+            height: 120.0,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct PhysicalSize {
+    width: u32,
+    height: u32,
+}
+
+impl PhysicalSize {
+    pub fn new(width: u32, height: u32) -> Result<Self, DomainError> {
+        if width == 0 || height == 0 {
+            return Err(DomainError::InvalidDimensions { width, height });
+        }
+        Ok(Self { width, height })
+    }
+
+    pub const fn from_raw(width: u32, height: u32) -> Self {
+        Self { width, height }
+    }
+
+    pub const fn width(&self) -> u32 {
+        self.width
+    }
+
+    pub const fn height(&self) -> u32 {
+        self.height
+    }
+
+    pub fn to_logical(&self, scale_factor: ScaleFactor) -> LogicalSize {
+        scale_factor.to_logical(*self)
+    }
+
+    pub fn as_tuple(&self) -> (u32, u32) {
+        (self.width, self.height)
+    }
+}
+
+impl Default for PhysicalSize {
+    fn default() -> Self {
+        Self {
+            width: 120,
+            height: 120,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Copy, PartialEq)]
+pub struct ScaleFactor(f32);
+
+impl ScaleFactor {
+    pub fn new(factor: f32) -> Result<Self, DomainError> {
+        if factor <= 0.0 {
+            return Err(DomainError::InvalidInput {
+                message: format!("Scale factor must be positive, got {factor}"),
+            });
+        }
+        if !factor.is_finite() {
+            return Err(DomainError::InvalidInput {
+                message: "Scale factor must be a finite value".to_string(),
+            });
+        }
+        Ok(Self(factor))
+    }
+
+    pub const fn from_raw(factor: f32) -> Self {
+        Self(factor)
+    }
+
+    pub const fn value(&self) -> f32 {
+        self.0
+    }
+
+    #[allow(clippy::cast_possible_truncation, clippy::cast_sign_loss)]
+    pub fn to_physical(&self, logical: LogicalSize) -> PhysicalSize {
+        let width = (logical.width * self.0).round() as u32;
+        let height = (logical.height * self.0).round() as u32;
+        PhysicalSize::from_raw(width.max(1), height.max(1))
+    }
+
+    #[allow(clippy::cast_precision_loss)]
+    pub fn to_logical(&self, physical: PhysicalSize) -> LogicalSize {
+        let width = physical.width as f32 / self.0;
+        let height = physical.height as f32 / self.0;
+        LogicalSize::from_raw(width, height)
+    }
+
+    #[allow(clippy::cast_possible_truncation)]
+    pub fn buffer_scale(&self) -> i32 {
+        self.0.round() as i32
+    }
+
+    pub fn scale_coordinate(&self, logical_coord: f32) -> f32 {
+        logical_coord * self.0
+    }
+
+    pub fn unscale_coordinate(&self, physical_coord: f32) -> f32 {
+        physical_coord / self.0
+    }
+}
+
+impl Default for ScaleFactor {
+    fn default() -> Self {
+        Self(1.0)
+    }
+}
+
+#[derive(Debug, Clone, Copy, PartialEq)]
+pub struct LogicalPosition {
+    x: f32,
+    y: f32,
+}
+
+impl LogicalPosition {
+    pub fn new(x: f32, y: f32) -> Self {
+        Self { x, y }
+    }
+
+    pub const fn x(&self) -> f32 {
+        self.x
+    }
+
+    pub const fn y(&self) -> f32 {
+        self.y
+    }
+
+    #[allow(clippy::cast_possible_truncation)]
+    pub fn to_physical(&self, scale_factor: ScaleFactor) -> PhysicalPosition {
+        PhysicalPosition::new(
+            (self.x * scale_factor.value()).round() as i32,
+            (self.y * scale_factor.value()).round() as i32,
+        )
+    }
+
+    pub fn as_tuple(&self) -> (f32, f32) {
+        (self.x, self.y)
+    }
+}
+
+impl Default for LogicalPosition {
+    fn default() -> Self {
+        Self { x: 0.0, y: 0.0 }
+    }
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct PhysicalPosition {
+    x: i32,
+    y: i32,
+}
+
+impl PhysicalPosition {
+    pub const fn new(x: i32, y: i32) -> Self {
+        Self { x, y }
+    }
+
+    pub const fn x(&self) -> i32 {
+        self.x
+    }
+
+    pub const fn y(&self) -> i32 {
+        self.y
+    }
+
+    #[allow(clippy::cast_precision_loss)]
+    pub fn to_logical(&self, scale_factor: ScaleFactor) -> LogicalPosition {
+        LogicalPosition::new(
+            self.x as f32 / scale_factor.value(),
+            self.y as f32 / scale_factor.value(),
+        )
+    }
+
+    pub fn as_tuple(&self) -> (i32, i32) {
+        (self.x, self.y)
+    }
+}
+
+#[allow(clippy::derivable_impls)]
+impl Default for PhysicalPosition {
+    fn default() -> Self {
+        Self { x: 0, y: 0 }
+    }
+}
diff --git a/domain/src/lib.rs b/domain/src/lib.rs
index 79e5089..c3dab49 100644
--- a/domain/src/lib.rs
+++ b/domain/src/lib.rs
@@ -1,4 +1,5 @@
 pub mod config;
+pub mod dimensions;
 pub mod entities;
 pub mod errors;
 pub mod ports;
diff --git a/domain/src/prelude.rs b/domain/src/prelude.rs
index f2737d3..738e274 100644
--- a/domain/src/prelude.rs
+++ b/domain/src/prelude.rs
@@ -1,6 +1,9 @@
 #![allow(clippy::pub_use)]
 
 pub use crate::config::WindowConfig;
+pub use crate::dimensions::{
+    LogicalPosition, LogicalSize, PhysicalPosition, PhysicalSize, ScaleFactor,
+};
 pub use crate::entities::component::UiComponentHandle;
 pub use crate::entities::surface::SurfaceHandle;
 pub use crate::entities::window::WindowHandle;
diff --git a/domain/src/surface_dimensions.rs b/domain/src/surface_dimensions.rs
index 175c550..f1c3e04 100644
--- a/domain/src/surface_dimensions.rs
+++ b/domain/src/surface_dimensions.rs
@@ -1,30 +1,62 @@
+use crate::dimensions::{LogicalSize, PhysicalSize, ScaleFactor};
+use crate::errors::Result;
+
 #[derive(Debug, Clone, Copy)]
 pub struct SurfaceDimensions {
-    pub logical_width: u32,
-    pub logical_height: u32,
-    pub physical_width: u32,
-    pub physical_height: u32,
-    pub buffer_scale: i32,
+    logical: LogicalSize,
+    physical: PhysicalSize,
+    scale_factor: ScaleFactor,
 }
 
 impl SurfaceDimensions {
-    #[must_use]
-    #[allow(
-        clippy::cast_possible_truncation,
-        clippy::cast_sign_loss,
-        clippy::cast_precision_loss
-    )]
-    pub fn calculate(logical_width: u32, logical_height: u32, scale_factor: f32) -> Self {
-        let physical_width = (logical_width as f32 * scale_factor).round() as u32;
-        let physical_height = (logical_height as f32 * scale_factor).round() as u32;
-        let buffer_scale = scale_factor.round() as i32;
+    #[allow(clippy::cast_precision_loss)]
+    pub fn calculate(
+        logical_width: u32,
+        logical_height: u32,
+        scale_factor: f32,
+    ) -> Result<Self> {
+        let logical = LogicalSize::new(logical_width as f32, logical_height as f32)?;
+        let scale = ScaleFactor::new(scale_factor)?;
+        let physical = scale.to_physical(logical);
 
-        Self {
-            logical_width,
-            logical_height,
-            physical_width,
-            physical_height,
-            buffer_scale,
-        }
+        Ok(Self {
+            logical,
+            physical,
+            scale_factor: scale,
+        })
+    }
+
+    pub const fn logical_size(&self) -> LogicalSize {
+        self.logical
+    }
+
+    pub const fn physical_size(&self) -> PhysicalSize {
+        self.physical
+    }
+
+    pub const fn scale_factor(&self) -> ScaleFactor {
+        self.scale_factor
+    }
+
+    pub fn buffer_scale(&self) -> i32 {
+        self.scale_factor.buffer_scale()
+    }
+
+    #[allow(clippy::cast_possible_truncation, clippy::cast_sign_loss)]
+    pub fn logical_width(&self) -> u32 {
+        self.logical.width() as u32
+    }
+
+    #[allow(clippy::cast_possible_truncation, clippy::cast_sign_loss)]
+    pub fn logical_height(&self) -> u32 {
+        self.logical.height() as u32
+    }
+
+    pub fn physical_width(&self) -> u32 {
+        self.physical.width()
+    }
+
+    pub fn physical_height(&self) -> u32 {
+        self.physical.height()
     }
 }
diff --git a/domain/src/value_objects/dimensions.rs b/domain/src/value_objects/dimensions.rs
index a207e8d..65efefa 100644
--- a/domain/src/value_objects/dimensions.rs
+++ b/domain/src/value_objects/dimensions.rs
@@ -1,13 +1,23 @@
-#[derive(Debug, Clone, Copy)]
+use crate::errors::{DomainError, Result};
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub struct WindowHeight(u32);
 
 impl WindowHeight {
-    #[must_use]
-    pub const fn new(height: u32) -> Self {
+    pub fn new(height: u32) -> Result<Self> {
+        if height == 0 {
+            return Err(DomainError::InvalidDimensions {
+                width: 0,
+                height: 0,
+            });
+        }
+        Ok(Self(height))
+    }
+
+    pub const fn from_raw(height: u32) -> Self {
         Self(height)
     }
 
-    #[must_use]
     pub const fn value(&self) -> u32 {
         self.0
     }
@@ -18,3 +28,11 @@ impl Default for WindowHeight {
         Self(30)
     }
 }
+
+impl TryFrom<u32> for WindowHeight {
+    type Error = DomainError;
+
+    fn try_from(height: u32) -> Result<Self> {
+        Self::new(height)
+    }
+}
diff --git a/domain/src/value_objects/popup_config.rs b/domain/src/value_objects/popup_config.rs
index 910fd4b..7e0c10c 100644
--- a/domain/src/value_objects/popup_config.rs
+++ b/domain/src/value_objects/popup_config.rs
@@ -1,19 +1,16 @@
 use super::popup_positioning_mode::PopupPositioningMode;
+use crate::dimensions::{LogicalPosition, LogicalSize};
 
 #[derive(Debug, Clone, Copy)]
 pub struct PopupConfig {
-    reference_x: f32,
-    reference_y: f32,
-    width: f32,
-    height: f32,
+    reference_position: LogicalPosition,
+    popup_size: LogicalSize,
+    output_size: LogicalSize,
     positioning_mode: PopupPositioningMode,
-    output_width: f32,
-    output_height: f32,
 }
 
 impl PopupConfig {
-    #[must_use]
-    pub const fn new(
+    pub fn new(
         reference_x: f32,
         reference_y: f32,
         width: f32,
@@ -23,62 +20,68 @@ impl PopupConfig {
         output_height: f32,
     ) -> Self {
         Self {
-            reference_x,
-            reference_y,
-            width,
-            height,
+            reference_position: LogicalPosition::new(reference_x, reference_y),
+            popup_size: LogicalSize::from_raw(width, height),
+            output_size: LogicalSize::from_raw(output_width, output_height),
             positioning_mode,
-            output_width,
-            output_height,
         }
     }
 
-    #[must_use]
+    pub const fn reference_position(&self) -> LogicalPosition {
+        self.reference_position
+    }
+
     pub const fn reference_x(&self) -> f32 {
-        self.reference_x
+        self.reference_position.x()
     }
 
-    #[must_use]
     pub const fn reference_y(&self) -> f32 {
-        self.reference_y
+        self.reference_position.y()
+    }
+
+    pub const fn popup_size(&self) -> LogicalSize {
+        self.popup_size
     }
 
-    #[must_use]
     pub const fn width(&self) -> f32 {
-        self.width
+        self.popup_size.width()
     }
 
-    #[must_use]
     pub const fn height(&self) -> f32 {
-        self.height
+        self.popup_size.height()
+    }
+
+    pub const fn output_size(&self) -> LogicalSize {
+        self.output_size
     }
 
-    #[must_use]
     pub const fn positioning_mode(&self) -> PopupPositioningMode {
         self.positioning_mode
     }
 
-    #[must_use]
+    pub fn calculated_top_left_position(&self) -> LogicalPosition {
+        LogicalPosition::new(self.calculated_top_left_x(), self.calculated_top_left_y())
+    }
+
     pub fn calculated_top_left_x(&self) -> f32 {
         let unclamped_x = if self.positioning_mode.center_x() {
-            self.reference_x - (self.width / 2.0)
+            self.reference_x() - (self.width() / 2.0)
         } else {
-            self.reference_x
+            self.reference_x()
         };
 
-        let max_x = self.output_width - self.width;
+        let max_x = self.output_size.width() - self.width();
         unclamped_x.max(0.0).min(max_x)
     }
 
-    #[must_use]
     pub fn calculated_top_left_y(&self) -> f32 {
         let unclamped_y = if self.positioning_mode.center_y() {
-            self.reference_y - (self.height / 2.0)
+            self.reference_y() - (self.height() / 2.0)
         } else {
-            self.reference_y
+            self.reference_y()
         };
 
-        let max_y = self.output_height - self.height;
+        let max_y = self.output_size.height() - self.height();
         unclamped_y.max(0.0).min(max_y)
     }
 }
diff --git a/domain/src/value_objects/popup_dimensions.rs b/domain/src/value_objects/popup_dimensions.rs
index 20d5341..6ab7248 100644
--- a/domain/src/value_objects/popup_dimensions.rs
+++ b/domain/src/value_objects/popup_dimensions.rs
@@ -1,42 +1,42 @@
+use crate::dimensions::LogicalSize;
 use crate::errors::{DomainError, Result};
 
-#[derive(Debug, Clone, Copy, PartialEq)]
+#[derive(Debug, Clone, Copy, PartialEq, Default)]
 pub struct PopupDimensions {
-    width: f32,
-    height: f32,
+    size: LogicalSize,
 }
 
 impl PopupDimensions {
-    #[must_use]
-    pub const fn new(width: f32, height: f32) -> Self {
-        Self { width, height }
+    pub fn new(width: f32, height: f32) -> Result<Self> {
+        let size = LogicalSize::new(width, height)?;
+        Ok(Self { size })
+    }
+
+    pub const fn from_logical(size: LogicalSize) -> Self {
+        Self { size }
     }
 
-    #[must_use]
     pub const fn width(&self) -> f32 {
-        self.width
+        self.size.width()
     }
 
-    #[must_use]
     pub const fn height(&self) -> f32 {
-        self.height
+        self.size.height()
     }
 
-    pub fn validate(&self) -> Result<()> {
-        if self.width <= 0.0 || self.height <= 0.0 {
-            return Err(DomainError::Configuration {
-                message: format!(
-                    "Invalid popup dimensions: width={}, height={}. Both must be positive.",
-                    self.width, self.height
-                ),
-            });
-        }
-        Ok(())
+    pub const fn logical_size(&self) -> LogicalSize {
+        self.size
+    }
+
+    pub fn as_tuple(&self) -> (f32, f32) {
+        self.size.as_tuple()
     }
 }
 
-impl Default for PopupDimensions {
-    fn default() -> Self {
-        Self::new(120.0, 120.0)
+impl TryFrom<(f32, f32)> for PopupDimensions {
+    type Error = DomainError;
+
+    fn try_from((width, height): (f32, f32)) -> Result<Self> {
+        Self::new(width, height)
     }
 }