feat: integrate ThemeToggle component and fix module visibility errors

frontend/src/components/ui/mod.rs

@@ -3,3 +3,5 @@ pub mod card;
 pub mod input;
 pub mod toast;
 pub mod context_menu;
+pub mod theme_toggle;
+pub mod svg_icon;

frontend/src/components/ui/svg_icon.rs

@@ -0,0 +1,25 @@
+use leptos::prelude::*;
+use tw_merge::tw_merge;
+
+#[component]
+pub fn SvgIcon(
+    children: Children,
+    #[prop(optional, into)] class: String,
+) -> impl IntoView {
+    let class = tw_merge!("size-4", class);
+    
+    view! {
+        <svg
+            xmlns="http://www.w3.org/2000/svg"
+            viewBox="0 0 24 24"
+            fill="none"
+            stroke="currentColor"
+            stroke-width="2"
+            stroke-linecap="round"
+            stroke-linejoin="round"
+            class=class
+        >
+            {children()}
+        </svg>
+    }
+}

frontend/src/components/ui/theme_toggle.rs

@@ -0,0 +1,76 @@
+use crate::components::ui::svg_icon::SvgIcon;
+use leptos::prelude::*;
+
+use crate::components::hooks::use_theme_mode::use_theme_mode;
+
+#[component]
+pub fn ThemeToggle() -> impl IntoView {
+    let theme_mode = use_theme_mode();
+
+    view! {
+        <style>
+            {"
+            .theme__toggle_transition {
+            -webkit-tap-highlight-color: transparent;
+            
+            svg path {
+            transform-origin: center;
+            transition: all .6s ease;
+            transform: translate3d(0,0,0);
+            backface-visibility: hidden;
+            
+            &.sun {
+            transform: scale(.4) rotate(60deg);
+            opacity: 0;
+            }
+            
+            &.moon {
+            opacity: 1;
+            }
+            }
+            
+            &.switch {
+            svg path {
+            &.sun {
+            transform: scale(1) rotate(0);
+            opacity: 1;
+            }
+            
+            &.moon {
+            transform: scale(.4) rotate(-60deg);
+            opacity: 0;
+            }
+            }
+            }
+            }
+            "}
+        </style>
+
+        <button
+            type="button"
+            aria-label="Toggle theme"
+            class=move || {
+                let base_class = "theme__toggle_transition";
+                if theme_mode.get() { format!("{base_class} switch") } else { base_class.to_string() }
+            }
+            on:click=move |_| theme_mode.toggle()
+        >
+            <SvgIcon class="size-4">
+                <path
+                    d="M12 1.75V3.25M12 20.75V22.25M1.75 12H3.25M20.75 12H22.25M4.75216 4.75216L5.81282 5.81282M18.1872 18.1872L19.2478 19.2478M4.75216 19.2478L5.81282 18.1872M18.1872 5.81282L19.2478 4.75216M16.25 12C16.25 14.3472 14.3472 16.25 12 16.25C9.65279 16.25 7.75 14.3472 7.75 12C7.75 9.65279 9.65279 7.75 12 7.75C14.3472 7.75 16.25 9.65279 16.25 12Z"
+                    stroke="currentColor"
+                    stroke-width="1.5"
+                    stroke-linecap="round"
+                    class="sun text-neutral-300"
+                />
+                <path
+                    d="M2.75 12C2.75 17.1086 6.89137 21.25 12 21.25C16.7154 21.25 20.6068 17.7216 21.1778 13.161C20.1198 13.8498 18.8566 14.25 17.5 14.25C13.7721 14.25 10.75 11.2279 10.75 7.5C10.75 5.66012 11.4861 3.99217 12.6799 2.77461C12.4554 2.7583 12.2287 2.75 12 2.75C6.89137 2.75 2.75 6.89137 2.75 12Z"
+                    stroke="currentColor"
+                    stroke-width="1.5"
+                    stroke-linejoin="round"
+                    class="moon text-neutral-700"
+                />
+            </SvgIcon>
+        </button>
+    }
+}