feat: Redesign New Chat (#31)

* make subject is optional

* redesign

* search

* fix

* adjust

crates/ui/src/button.rs

@@ -308,9 +308,15 @@ impl RenderOnce for Button {
                     // Normal Button
                     match self.size {
                         Size::Size(size) => this.px(size * 0.2),
-                        Size::XSmall => this.h_6().px_1p5(),
-                        Size::Small => this.h_7().px_2(),
-                        Size::Large => this.h_10().px_3(),
+                        Size::XSmall => this.h_6().px_2(),
+                        Size::Small => {
+                            if self.icon.is_some() {
+                                this.h_7().pl_2().pr_3()
+                            } else {
+                                this.h_7().px_3()
+                            }
+                        }
+                        Size::Large => this.h_10().px_4(),
                         _ => this.h_9().px_2(),
                     }
                 }