diff --git a/Cargo.lock b/Cargo.lock
index 12ff715..38610fa 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3641,7 +3641,10 @@ name = "sentryx"
 version = "0.1.0"
 dependencies = [
  "dioxus",
+ "js-sys",
  "lucide-dioxus",
+ "wasm-bindgen",
+ "web-sys",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index c3a6f35..e84e32b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,7 +8,10 @@ edition = "2021"
 
 [dependencies]
 dioxus = { version = "0.6.0", features = ["router", "fullstack"] }
+js-sys = "0.3.77"
 lucide-dioxus = { version = "2.15.0", features = ["all-icons"] }
+wasm-bindgen = "0.2.100"
+web-sys = "0.3.77"
 
 [features]
 default = ["web"]
diff --git a/assets/styles/light.css b/assets/styles/light.css
deleted file mode 100644
index 72cb05d..0000000
--- a/assets/styles/light.css
+++ /dev/null
@@ -1,67 +0,0 @@
-:root {
-  /* States */
-  --online: rgb(22 101 52);
-  --offline: rgb(153, 27, 27);
-  --warning: rgb(154, 52, 18);
-  --maintenance: rgb(30, 64, 175);
-
-  /* States bg */
-  --online-bg: rgb(220, 252, 231);
-  --offline-bg: rgb(254, 226, 226);
-  --warning-bg: rgb(255, 237, 213);
-  --maintenance-bg: rgb(219, 234, 254);
-
-  /* Overview data */
-  --online-ov: #16a34a;
-  --issue: rgb(234, 71, 12);
-  --cpu: rgb(37, 99, 235);
-  --memory: rgb(147, 51, 234);
-  --storage: rgb(234, 88, 12);
-  --network: rgb(22 163 74);
-
-  /* Usage levels */
-  --low: rgb(34, 197, 94);
-  --medium: rgb(234, 179, 8);
-  --high: rgb(239, 68, 68);
-
-  /* Misc */
-  --bg: #f1f5f9;
-  --fg: #0f172a;
-  --card-bg: #fff;
-  --progress-bg: rgb(226, 232, 240);
-  --server-icon-bg: rgb(219 234 254);
-}
-
-.dark {
-  /* States */
-  --online: rgb(34, 197, 94); /* bright green */
-  --offline: rgb(248, 113, 113); /* soft red */
-  --warning: rgb(251, 191, 36); /* yellow-orange */
-  --maintenance: rgb(147, 197, 253); /* light blue */
-
-  /* States bg */
-  --online-bg: rgba(22, 101, 52, 0.417); /* dark green */
-  --offline-bg: rgb(153, 27, 27, 0.417); /* dark red */
-  --warning-bg: rgb(154, 52, 18, 0.417); /* dark orange */
-  --maintenance-bg: rgb(30, 64, 175, 0.417); /* dark blue */
-
-  /* Overview data */
-  --online-ov: #16a34a;
-  --issue: rgb(234, 71, 12);
-  --cpu: rgb(37, 99, 235);
-  --memory: rgb(147, 51, 234);
-  --storage: rgb(234, 88, 12);
-  --network: rgb(22 163 74);
-
-  /* Usage levels */
-  --low: rgb(74, 222, 128); /* light green */
-  --medium: rgb(253, 224, 71); /* light yellow */
-  --high: rgb(239, 68, 68); /* red */
-
-  /* Misc */
-  --bg: #0f172a; /* dark navy */
-  --fg: #f8fafc; /* light text */
-  --card-bg: #141e2f; /* dark card background 141e2f */
-  --progress-bg: #27364d;
-  --server-icon-bg: #243756;
-}
diff --git a/assets/styles/theme.css b/assets/styles/theme.css
new file mode 100644
index 0000000..aab9464
--- /dev/null
+++ b/assets/styles/theme.css
@@ -0,0 +1,101 @@
+:root {
+  /* States */
+  --online: rgb(22 101 52);
+  --offline: rgb(153, 27, 27);
+  --warning: rgb(154, 52, 18);
+  --maintenance: rgb(30, 64, 175);
+
+  /* States bg */
+  --online-bg: rgb(220, 252, 231);
+  --offline-bg: rgb(254, 226, 226);
+  --warning-bg: rgb(255, 237, 213);
+  --maintenance-bg: rgb(219, 234, 254);
+
+  /* Overview data */
+  --online-ov: #16a34a;
+  --issue: rgb(234, 71, 12);
+  --cpu: rgb(37, 99, 235);
+  --memory: rgb(147, 51, 234);
+  --storage: rgb(234, 88, 12);
+  --network: rgb(22 163 74);
+
+  /* Usage levels */
+  --low: rgb(34, 197, 94);
+  --medium: rgb(234, 179, 8);
+  --high: rgb(239, 68, 68);
+
+  /* Misc */
+  --bg: #f1f5f9;
+  --fg: #0f172a;
+  --card-bg: #fff;
+  --progress-bg: rgb(226, 232, 240);
+  --server-icon-bg: rgb(219 234 254);
+}
+
+.dark {
+  /* States */
+  --online: rgb(34, 197, 94); /* bright green */
+  --offline: rgb(248, 113, 113); /* soft red */
+  --warning: rgb(246, 190, 50); /* yellow-orange */
+  --maintenance: rgb(147, 197, 253); /* light blue */
+
+  /* States bg */
+  --online-bg: rgba(22, 101, 52, 0.417); /* dark green */
+  --offline-bg: rgb(153, 27, 27, 0.417); /* dark red */
+  --warning-bg: rgba(102, 67, 21, 0.417); /* dark orange */
+  --maintenance-bg: rgb(30, 64, 175, 0.417); /* dark blue */
+
+  /* Overview data */
+  --online-ov: #16a34a;
+  --issue: rgb(234, 71, 12);
+  --cpu: rgb(37, 99, 235);
+  --memory: rgb(147, 51, 234);
+  --storage: rgb(234, 88, 12);
+  --network: rgb(22 163 74);
+
+  /* Usage levels */
+  --low: rgb(32, 232, 105); /* light green */
+  --medium: rgb(237, 201, 20); /* light yellow */
+  --high: rgb(232, 54, 54); /* red */
+
+  /* Misc */
+  --bg: #0f172a; /* dark navy */
+  --fg: #f8fafc; /* light text */
+  --card-bg: #141e2f; /* dark card background 141e2f */
+  --progress-bg: #27364d;
+  --server-icon-bg: #243756;
+}
+
+.black {
+  /* States */
+  --online: rgb(0, 255, 128);         /* neon green */
+  --offline: rgb(255, 77, 77);        /* soft red */
+  --warning: rgb(255, 193, 7);        /* bright yellow */
+  --maintenance: rgb(100, 181, 246);  /* light blue */
+
+  /* States bg (dark, translucent overlays) */
+  --online-bg: rgba(0, 128, 64, 0.3);       /* deep green */
+  --offline-bg: rgba(139, 0, 0, 0.3);       /* dark red */
+  --warning-bg: rgba(153, 102, 0, 0.3);     /* golden brown */
+  --maintenance-bg: rgba(25, 118, 210, 0.3);/* muted blue */
+
+  /* Overview data */
+  --online-ov: #00ff80;                   /* neon green */
+  --issue: rgb(255, 85, 0);               /* warning orange */
+  --cpu: rgb(66, 165, 245);               /* light blue */
+  --memory: rgb(200, 39, 228);            /* purple */
+  --storage: rgb(255, 111, 0);            /* orange */
+  --network: rgb(0, 200, 83);             /* green */
+
+  /* Usage levels */
+  --low: rgb(11, 226, 86);                /* neon green */
+  --medium: rgb(231, 215, 72);            /* bright yellow */
+  --high: rgb(211, 56, 48);               /* red */
+
+  /* Misc */
+  --bg: #000000;                          /* pure black */
+  --fg: #ffffff;                          /* pure white */
+  --card-bg: #0e0e0e;                     /* almost black card */
+  --progress-bg: #1a1a1a;                 /* very dark grey */
+  --server-icon-bg: #111111;             /* dark grey */
+}
diff --git a/src/cookie.rs b/src/cookie.rs
new file mode 100644
index 0000000..f08ae32
--- /dev/null
+++ b/src/cookie.rs
@@ -0,0 +1,37 @@
+use wasm_bindgen::JsCast;
+use web_sys::{window, HtmlDocument};
+
+pub fn set_cookie(name: &str, value: &str) {
+    let Some(document) = window().and_then(|w| w.document()) else {
+        return;
+    };
+
+    let Ok(html_doc) = document.dyn_into::<HtmlDocument>() else {
+        return;
+    };
+
+    let cookie = format!("{name}={value}; path=/");
+    let _ = html_doc.set_cookie(&cookie);
+}
+
+pub fn get_cookie(name: &str) -> Option<String> {
+    let Some(document) = window().and_then(|w| w.document()) else {
+        return None;
+    };
+    let Ok(html_doc) = document.dyn_into::<HtmlDocument>() else {
+        return None;
+    };
+
+    let Ok(cookie_string) = html_doc.cookie() else {
+        return None;
+    };
+    for cookie in cookie_string.split(';') {
+        let cookie = cookie.trim();
+        if let Some((k, v)) = cookie.split_once('=') {
+            if k == name {
+                return Some(v.to_string());
+            }
+        }
+    }
+    None
+}
diff --git a/src/main.rs b/src/main.rs
index 7fd5ab6..513397b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,9 +1,11 @@
 mod backend;
 mod components;
+mod cookie;
 mod dashboard;
 mod login;
 
 use dioxus::prelude::*;
+use web_sys::window;
 
 use dashboard::Dashboard;
 use login::Login;
@@ -19,7 +21,7 @@ enum Route {
 
 const FAVICON: Asset = asset!("/assets/favicon.ico");
 const FONT_CSS: Asset = asset!("/assets/styles/font.css");
-const LIGHT_CSS: Asset = asset!("/assets/styles/light.css");
+const THEME_CSS: Asset = asset!("/assets/styles/theme.css");
 
 fn main() {
     dioxus::launch(App);
@@ -27,10 +29,42 @@ fn main() {
 
 #[component]
 fn App() -> Element {
+    let mut theme = use_signal(|| String::from("light"));
+
+    use_effect({
+        let mut theme = theme.clone();
+        move || {
+            theme.set(cookie::get_cookie("theme").unwrap_or_default());
+        }
+    });
+
+    use_effect({
+        let theme = theme.clone();
+        move || {
+            if let Some(document) = window().and_then(|w| w.document()) {
+                if let Some(html) = document.document_element() {
+                    html.set_class_name(&*theme.read());
+                }
+            }
+        }
+    });
+
     rsx! {
         document::Link { rel: "icon", href: FAVICON }
         document::Link { rel: "stylesheet", href: FONT_CSS }
-        document::Link { rel: "stylesheet", href: LIGHT_CSS }
+        document::Link { rel: "stylesheet", href: THEME_CSS }
+        button {
+            onclick: move |_| {
+                let d = match theme.read().as_str() {
+                    "dark" => String::from("black"),
+                    "black" => String::from("light"),
+                    _ => String::from("dark")
+                };
+                cookie::set_cookie("theme", &d);
+                theme.set(d);
+            },
+            "Click"
+        }
         Router::<Route> { }
     }
 }