Add textbox_corner_radius layout setting and TextBox styling

 src/layout.rs                | 38 ++++++++++++++++++++++++++++++++++++++
 src/widget/input/text_box.rs | 13 +++++++++++++
 2 files changed, 51 insertions(+)

diff --git a/src/layout.rs b/src/layout.rs
index 58c32d1..ad5de8d 100644
--- a/src/layout.rs
+++ b/src/layout.rs
@@ -54,6 +54,7 @@ static NESTED_SECTION_LABEL_ALIGNMENT: RwLock<u8> = RwLock::new(0);
 static LABEL_MARGIN: RwLock<f32> = RwLock::new(6.0);
 static BUTTON_CORNER_RADIUS: RwLock<f32> = RwLock::new(4.0);
 static SPINBOX_CORNER_RADIUS: RwLock<f32> = RwLock::new(4.0);
+static TEXTBOX_CORNER_RADIUS: RwLock<f32> = RwLock::new(4.0);
 
 /// Standard line height multiplier for text layout in cce-ui.
 pub const TEXT_LINE_HEIGHT_MULTIPLIER: f32 = 1.4;
@@ -155,6 +156,15 @@ pub fn reload_config() {
                     }
                 }
             }
+            if let Some(rest) = trimmed.strip_prefix("textbox_corner_radius") {
+                let rest = rest.trim_start_matches(|c: char| c == ' ' || c == '=' || c == '"');
+                let val_str = rest.trim_end_matches('"').trim();
+                if let Ok(val) = val_str.parse::<f32>() {
+                    if let Ok(mut lock) = TEXTBOX_CORNER_RADIUS.write() {
+                        *lock = val;
+                    }
+                }
+            }
             if let Some(rest) = trimmed.strip_prefix("toggle_height") {
                 let rest = rest.trim_start_matches(|c: char| c == ' ' || c == '=' || c == '"');
                 let val_str = rest.trim_end_matches('"').trim();
@@ -929,6 +939,34 @@ pub fn set_spinbox_corner_radius(radius: f32) {
     }
 }
 
+pub fn textbox_corner_radius() -> f32 {
+    use std::sync::Once;
+    static INIT: Once = Once::new();
+    INIT.call_once(|| {
+        if let Some(content) = read_config() {
+            for line in content.lines() {
+                let trimmed = line.trim();
+                if let Some(rest) = trimmed.strip_prefix("textbox_corner_radius") {
+                    let rest = rest.trim_start_matches(|c: char| c == ' ' || c == '=' || c == '"');
+                    let val_str = rest.trim_end_matches('"').trim();
+                    if let Ok(val) = val_str.parse::<f32>() {
+                        if let Ok(mut lock) = TEXTBOX_CORNER_RADIUS.write() {
+                            *lock = val;
+                        }
+                    }
+                }
+            }
+        }
+    });
+    *TEXTBOX_CORNER_RADIUS.read().unwrap()
+}
+
+pub fn set_textbox_corner_radius(radius: f32) {
+    if let Ok(mut lock) = TEXTBOX_CORNER_RADIUS.write() {
+        *lock = radius;
+    }
+}
+
 pub fn color_selector_preview_margin() -> f32 {
     use std::sync::Once;
     static INIT: Once = Once::new();
diff --git a/src/widget/input/text_box.rs b/src/widget/input/text_box.rs
index 089a4a5..eb328ac 100644
--- a/src/widget/input/text_box.rs
+++ b/src/widget/input/text_box.rs
@@ -372,6 +372,19 @@ impl Element for TextBox {
         Some(crate::layout::textbox_height())
     }
 
+    fn rounded_corners(&self) -> (bool, bool, bool, bool) {
+        let r = crate::layout::textbox_corner_radius();
+        if r > 0.0 {
+            (true, true, true, true)
+        } else {
+            (false, false, false, false)
+        }
+    }
+
+    fn corner_radius(&self) -> f32 {
+        crate::layout::textbox_corner_radius()
+    }
+
     fn rect(&self) -> (f32, f32, f32, f32) { (self.base.x, self.base.y, self.base.w, self.base.h) }
     fn set_rect(&mut self, x: f32, y: f32, w: f32, h: f32) {
         let final_w = if let Some(explicit_w) = self.width {