diff --git a/src/renderer/src/app.scss b/src/renderer/src/app.scss
new file mode 100644
index 00000000..2f383d04
--- /dev/null
+++ b/src/renderer/src/app.scss
@@ -0,0 +1,130 @@
+@use "./scss/globals.scss";
+
+* {
+  box-sizing: border-box;
+}
+
+::-webkit-scrollbar {
+  width: 9px;
+  background-color: globals.$dark-background-color;
+}
+
+::-webkit-scrollbar-track {
+  background-color: rgba(255, 255, 255, 0.03);
+}
+
+::-webkit-scrollbar-thumb {
+  background-color: rgba(255, 255, 255, 0.08);
+  border-radius: 24px;
+}
+
+::-webkit-scrollbar-thumb:hover {
+  background-color: rgba(255, 255, 255, 0.16);
+}
+
+html,
+body,
+#root,
+main {
+  height: 100%;
+}
+
+body {
+  overflow: hidden;
+  user-select: none;
+  font-family:
+    Noto Sans,
+    sans-serif;
+  font-size: globals.$body-font-size;
+  color: globals.$body-color;
+  margin: 0;
+}
+
+button {
+  padding: 0;
+  background-color: transparent;
+  border: none;
+  font-family: inherit;
+}
+
+h1,
+h2,
+h3,
+h4,
+h5,
+h6,
+p {
+  margin: 0;
+}
+
+p {
+  line-height: 20px;
+}
+
+#root,
+main {
+  display: flex;
+}
+
+#root {
+  flex-direction: column;
+}
+
+main {
+  overflow: hidden;
+}
+
+input::-webkit-outer-spin-button,
+input::-webkit-inner-spin-button {
+  -webkit-appearance: none;
+  margin: 0;
+}
+
+label {
+  font-size: globals.$body-font-size;
+}
+
+img {
+  -webkit-user-drag: none;
+}
+
+progress[value] {
+  -webkit-appearance: none;
+}
+
+.container {
+  width: 100%;
+  height: 100%;
+  overflow: hidden;
+  display: flex;
+  flex-direction: column;
+  container-name: globals.$app-container;
+  container-type: inline-size;
+
+  &__content {
+    overflow-y: auto;
+    align-items: center;
+    display: flex;
+    flex-direction: column;
+    position: relative;
+    height: 100%;
+    background: linear-gradient(
+      0deg,
+      globals.$dark-background-color 50%,
+      globals.$background-color 100%
+    );
+  }
+}
+
+.title-bar {
+  display: flex;
+  width: 100%;
+  height: 35px;
+  min-height: 35px;
+  background-color: globals.$dark-background-color;
+  align-items: center;
+  padding: 0 calc(globals.$spacing-unit * 2);
+  -webkit-app-region: drag;
+  z-index: 4;
+  border-bottom: 1px solid globals.$border-color;
+}
diff --git a/src/renderer/src/app.tsx b/src/renderer/src/app.tsx
index 7c572a56..ce184474 100644
--- a/src/renderer/src/app.tsx
+++ b/src/renderer/src/app.tsx
@@ -2,6 +2,8 @@ import { useCallback, useContext, useEffect, useRef } from "react";
 
 import { Sidebar, BottomPanel, Header, Toast } from "@renderer/components";
 
+import "./app.scss";
+
 import {
   useAppDispatch,
   useAppSelector,
diff --git a/src/renderer/src/components/backdrop/backdrop.css.ts b/src/renderer/src/components/backdrop/backdrop.css.ts
deleted file mode 100644
index 1ccfe12f..00000000
--- a/src/renderer/src/components/backdrop/backdrop.css.ts
+++ /dev/null
@@ -1,54 +0,0 @@
-import { keyframes } from "@vanilla-extract/css";
-import { recipe } from "@vanilla-extract/recipes";
-
-import { SPACING_UNIT, vars } from "../../theme.css";
-
-export const backdropFadeIn = keyframes({
-  "0%": { backdropFilter: "blur(0px)", backgroundColor: "rgba(0, 0, 0, 0.5)" },
-  "100%": {
-    backdropFilter: "blur(2px)",
-    backgroundColor: "rgba(0, 0, 0, 0.7)",
-  },
-});
-
-export const backdropFadeOut = keyframes({
-  "0%": { backdropFilter: "blur(2px)", backgroundColor: "rgba(0, 0, 0, 0.7)" },
-  "100%": {
-    backdropFilter: "blur(0px)",
-    backgroundColor: "rgba(0, 0, 0, 0)",
-  },
-});
-
-export const backdrop = recipe({
-  base: {
-    animationName: backdropFadeIn,
-    animationDuration: "0.4s",
-    backgroundColor: "rgba(0, 0, 0, 0.7)",
-    position: "absolute",
-    width: "100%",
-    height: "100%",
-    display: "flex",
-    justifyContent: "center",
-    alignItems: "center",
-    zIndex: vars.zIndex.backdrop,
-    top: "0",
-    padding: `${SPACING_UNIT * 3}px`,
-    backdropFilter: "blur(2px)",
-    transition: "all ease 0.2s",
-  },
-  variants: {
-    closing: {
-      true: {
-        animationName: backdropFadeOut,
-        backdropFilter: "blur(0px)",
-        backgroundColor: "rgba(0, 0, 0, 0)",
-      },
-    },
-    windows: {
-      true: {
-        // SPACING_UNIT * 3 + title bar spacing
-        paddingTop: `${SPACING_UNIT * 3 + 35}px`,
-      },
-    },
-  },
-});
diff --git a/src/renderer/src/components/backdrop/backdrop.scss b/src/renderer/src/components/backdrop/backdrop.scss
new file mode 100644
index 00000000..d62ff9a9
--- /dev/null
+++ b/src/renderer/src/components/backdrop/backdrop.scss
@@ -0,0 +1,50 @@
+@use "../../scss/globals.scss";
+
+.backdrop {
+  animation-name: backdrop-fade-in;
+  animation-duration: 0.4s;
+  background-color: rgba(0, 0, 0, 0.7);
+  position: absolute;
+  width: 100%;
+  height: 100%;
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  z-index: globals.$backdrop-z-index;
+  top: 0;
+  padding: calc(globals.$spacing-unit * 3);
+  backdrop-filter: blur(2px);
+  transition: all ease 0.2s;
+
+  &--closing {
+    animation-name: backdrop-fade-out;
+    backdrop-filter: blur(0px);
+    background-color: rgba(0, 0, 0, 0);
+  }
+
+  &--windows {
+    padding-top: calc(#{globals.$spacing-unit * 3} + 35);
+  }
+}
+
+@keyframes backdrop-fade-in {
+  0% {
+    backdrop-filter: blur(0px);
+    background-color: rgba(0, 0, 0, 0.5);
+  }
+  100% {
+    backdrop-filter: blur(2px);
+    background-color: rgba(0, 0, 0, 0.7);
+  }
+}
+
+@keyframes backdrop-fade-out {
+  0% {
+    backdrop-filter: blur(2px);
+    background-color: rgba(0, 0, 0, 0.7);
+  }
+  100% {
+    backdrop-filter: blur(0px);
+    background-color: rgba(0, 0, 0, 0);
+  }
+}
diff --git a/src/renderer/src/components/backdrop/backdrop.tsx b/src/renderer/src/components/backdrop/backdrop.tsx
index f498e664..e62d42ee 100644
--- a/src/renderer/src/components/backdrop/backdrop.tsx
+++ b/src/renderer/src/components/backdrop/backdrop.tsx
@@ -1,4 +1,5 @@
-import * as styles from "./backdrop.css";
+import "./backdrop.scss";
+import cn from "classnames";
 
 export interface BackdropProps {
   isClosing?: boolean;
@@ -8,9 +9,9 @@ export interface BackdropProps {
 export function Backdrop({ isClosing = false, children }: BackdropProps) {
   return (
     <div
-      className={styles.backdrop({
-        closing: isClosing,
-        windows: window.electron.platform === "win32",
+      className={cn("backdrop", {
+        "backdrop--closing": isClosing,
+        "backdrop--windows": window.electron.platform === "win32",
       })}
     >
       {children}
diff --git a/src/renderer/src/components/checkbox-field/checkbox-field.css.ts b/src/renderer/src/components/checkbox-field/checkbox-field.css.ts
deleted file mode 100644
index 606b226a..00000000
--- a/src/renderer/src/components/checkbox-field/checkbox-field.css.ts
+++ /dev/null
@@ -1,41 +0,0 @@
-import { style } from "@vanilla-extract/css";
-
-import { SPACING_UNIT, vars } from "../../theme.css";
-
-export const checkboxField = style({
-  display: "flex",
-  flexDirection: "row",
-  alignItems: "center",
-  gap: `${SPACING_UNIT}px`,
-  cursor: "pointer",
-});
-
-export const checkbox = style({
-  width: "20px",
-  height: "20px",
-  borderRadius: "4px",
-  backgroundColor: vars.color.darkBackground,
-  display: "flex",
-  justifyContent: "center",
-  alignItems: "center",
-  position: "relative",
-  transition: "all ease 0.2s",
-  border: `solid 1px ${vars.color.border}`,
-  ":hover": {
-    borderColor: "rgba(255, 255, 255, 0.5)",
-  },
-});
-
-export const checkboxInput = style({
-  width: "100%",
-  height: "100%",
-  position: "absolute",
-  margin: "0",
-  padding: "0",
-  opacity: "0",
-  cursor: "pointer",
-});
-
-export const checkboxLabel = style({
-  cursor: "pointer",
-});
diff --git a/src/renderer/src/components/checkbox-field/checkbox-field.scss b/src/renderer/src/components/checkbox-field/checkbox-field.scss
new file mode 100644
index 00000000..06235687
--- /dev/null
+++ b/src/renderer/src/components/checkbox-field/checkbox-field.scss
@@ -0,0 +1,39 @@
+@use "../../scss/globals.scss";
+
+.checkbox-field {
+  display: flex;
+  flex-direction: row;
+  align-items: center;
+  gap: globals.$spacing-unit;
+  cursor: pointer;
+
+  &__checkbox {
+    width: 20px;
+    height: 20px;
+    border-radius: 4px;
+    background-color: globals.$dark-background-color;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    position: relative;
+    transition: all ease 0.2s;
+    border: solid 1px globals.$border-color;
+    &:hover {
+      border-color: rgba(255, 255, 255, 0.5);
+    }
+  }
+
+  &__input {
+    width: 100%;
+    height: 100%;
+    position: absolute;
+    margin: 0;
+    padding: 0;
+    opacity: 0;
+    cursor: pointer;
+  }
+
+  &__label {
+    cursor: pointer;
+  }
+}
diff --git a/src/renderer/src/components/checkbox-field/checkbox-field.tsx b/src/renderer/src/components/checkbox-field/checkbox-field.tsx
index bb81a910..3e80f0aa 100644
--- a/src/renderer/src/components/checkbox-field/checkbox-field.tsx
+++ b/src/renderer/src/components/checkbox-field/checkbox-field.tsx
@@ -1,6 +1,6 @@
 import { useId } from "react";
-import * as styles from "./checkbox-field.css";
 import { CheckIcon } from "@primer/octicons-react";
+import "./checkbox-field.scss";
 
 export interface CheckboxFieldProps
   extends React.DetailedHTMLProps<
@@ -14,17 +14,17 @@ export function CheckboxField({ label, ...props }: CheckboxFieldProps) {
   const id = useId();
 
   return (
-    <div className={styles.checkboxField}>
-      <div className={styles.checkbox}>
+    <div className="checkbox-field">
+      <div className="checkbox-field__checkbox">
         <input
           id={id}
           type="checkbox"
-          className={styles.checkboxInput}
+          className="checkbox-field__input"
           {...props}
         />
         {props.checked && <CheckIcon />}
       </div>
-      <label htmlFor={id} className={styles.checkboxLabel}>
+      <label htmlFor={id} className="checkbox-field__label">
         {label}
       </label>
     </div>
diff --git a/src/renderer/src/components/confirmation-modal/confirmation-modal.css.ts b/src/renderer/src/components/confirmation-modal/confirmation-modal.css.ts
deleted file mode 100644
index a9aec403..00000000
--- a/src/renderer/src/components/confirmation-modal/confirmation-modal.css.ts
+++ /dev/null
@@ -1,13 +0,0 @@
-import { SPACING_UNIT } from "../../theme.css";
-import { style } from "@vanilla-extract/css";
-
-export const actions = style({
-  display: "flex",
-  alignSelf: "flex-end",
-  gap: `${SPACING_UNIT * 2}px`,
-});
-
-export const descriptionText = style({
-  fontSize: "16px",
-  lineHeight: "24px",
-});
diff --git a/src/renderer/src/components/confirmation-modal/confirmation-modal.scss b/src/renderer/src/components/confirmation-modal/confirmation-modal.scss
new file mode 100644
index 00000000..428818c4
--- /dev/null
+++ b/src/renderer/src/components/confirmation-modal/confirmation-modal.scss
@@ -0,0 +1,17 @@
+@use "../../scss/globals.scss";
+
+.confirmation-modal {
+  display: flex;
+  flex-direction: column;
+  gap: calc(globals.$spacing-unit * 2);
+
+  &__actions {
+    display: flex;
+    align-self: flex-end;
+    gap: calc(globals.$spacing-unit * 2);
+  }
+  &__description {
+    font-size: 16px;
+    line-height: 24px;
+  }
+}
diff --git a/src/renderer/src/components/confirmation-modal/confirmation-modal.tsx b/src/renderer/src/components/confirmation-modal/confirmation-modal.tsx
index 31929c60..eaf3526a 100644
--- a/src/renderer/src/components/confirmation-modal/confirmation-modal.tsx
+++ b/src/renderer/src/components/confirmation-modal/confirmation-modal.tsx
@@ -1,7 +1,7 @@
 import { Button } from "../button/button";
 import { Modal, type ModalProps } from "../modal/modal";
 
-import * as styles from "./confirmation-modal.css";
+import "./confirmation-modal.scss";
 
 export interface ConfirmationModalProps extends Omit<ModalProps, "children"> {
   confirmButtonLabel: string;
@@ -31,10 +31,10 @@ export function ConfirmationModal({
 
   return (
     <Modal {...props}>
-      <div style={{ display: "flex", flexDirection: "column", gap: "16px" }}>
-        <p className={styles.descriptionText}>{descriptionText}</p>
+      <div className="confirmation-modal">
+        <p className="confirmation-modal__description">{descriptionText}</p>
 
-        <div className={styles.actions}>
+        <div className="confirmation-modal__actions">
           <Button theme="outline" onClick={handleCancelClick}>
             {cancelButtonLabel}
           </Button>
diff --git a/src/renderer/src/components/game-card/game-card.css.ts b/src/renderer/src/components/game-card/game-card.css.ts
deleted file mode 100644
index c810130d..00000000
--- a/src/renderer/src/components/game-card/game-card.css.ts
+++ /dev/null
@@ -1,106 +0,0 @@
-import { style } from "@vanilla-extract/css";
-
-import { SPACING_UNIT, vars } from "../../theme.css";
-
-export const card = style({
-  width: "100%",
-  height: "180px",
-  boxShadow: "0px 0px 15px 0px #000000",
-  overflow: "hidden",
-  borderRadius: "4px",
-  transition: "all ease 0.2s",
-  border: `solid 1px ${vars.color.border}`,
-  cursor: "pointer",
-  zIndex: "1",
-  ":active": {
-    opacity: vars.opacity.active,
-  },
-});
-
-export const backdrop = style({
-  background: "linear-gradient(0deg, rgba(0, 0, 0, 0.7) 50%, transparent 100%)",
-  width: "100%",
-  height: "100%",
-  display: "flex",
-  justifyContent: "flex-end",
-  flexDirection: "column",
-  position: "relative",
-});
-
-export const cover = style({
-  width: "100%",
-  height: "100%",
-  objectFit: "cover",
-  objectPosition: "center",
-  position: "absolute",
-  zIndex: "-1",
-  transition: "all ease 0.2s",
-  selectors: {
-    [`${card}:hover &`]: {
-      transform: "scale(1.05)",
-    },
-  },
-});
-
-export const content = style({
-  color: "#DADBE1",
-  padding: `${SPACING_UNIT}px ${SPACING_UNIT * 2}px`,
-  display: "flex",
-  alignItems: "flex-start",
-  gap: `${SPACING_UNIT}px`,
-  flexDirection: "column",
-  transition: "all ease 0.2s",
-  transform: "translateY(24px)",
-  selectors: {
-    [`${card}:hover &`]: {
-      transform: "translateY(0px)",
-    },
-  },
-});
-
-export const title = style({
-  fontSize: "16px",
-  fontWeight: "bold",
-  textAlign: "left",
-});
-
-export const downloadOptions = style({
-  display: "flex",
-  margin: "0",
-  padding: "0",
-  gap: `${SPACING_UNIT}px`,
-  flexWrap: "wrap",
-  listStyle: "none",
-});
-
-export const specifics = style({
-  display: "flex",
-  gap: `${SPACING_UNIT * 2}px`,
-  justifyContent: "center",
-});
-
-export const specificsItem = style({
-  gap: `${SPACING_UNIT}px`,
-  display: "flex",
-  color: vars.color.muted,
-  fontSize: "12px",
-  alignItems: "flex-end",
-});
-
-export const titleContainer = style({
-  display: "flex",
-  alignItems: "center",
-  gap: `${SPACING_UNIT}px`,
-  color: vars.color.muted,
-});
-
-export const shopIcon = style({
-  width: "20px",
-  height: "20px",
-  minWidth: "20px",
-});
-
-export const noDownloadsLabel = style({
-  color: vars.color.body,
-  fontWeight: "bold",
-});
diff --git a/src/renderer/src/components/game-card/game-card.scss b/src/renderer/src/components/game-card/game-card.scss
new file mode 100644
index 00000000..ee4a22b1
--- /dev/null
+++ b/src/renderer/src/components/game-card/game-card.scss
@@ -0,0 +1,102 @@
+@use "../../scss/globals.scss";
+
+.game-card {
+  width: 100%;
+  height: 180px;
+  box-shadow: 0px 0px 15px 0px #000000;
+  overflow: hidden;
+  border-radius: 4px;
+  transition: all ease 0.2s;
+  border: solid 1px globals.$border-color;
+  cursor: pointer;
+  z-index: 1;
+
+  &:active {
+    opacity: globals.$active-opacity;
+  }
+
+  &__backdrop {
+    background: linear-gradient(0deg, rgba(0, 0, 0, 0.7) 50%, transparent 100%);
+    width: 100%;
+    height: 100%;
+    display: flex;
+    justify-content: flex-end;
+    flex-direction: column;
+    position: relative;
+  }
+
+  &__cover {
+    width: 100%;
+    height: 100%;
+    object-fit: cover;
+    object-position: center;
+    position: absolute;
+    z-index: -1;
+    transition: all ease 0.2s;
+  }
+
+  &__content {
+    color: #dadbe1;
+    padding: globals.$spacing-unit calc(globals.$spacing-unit * 2);
+    display: flex;
+    align-items: flex-start;
+    gap: globals.$spacing-unit;
+    flex-direction: column;
+    transition: all ease 0.2s;
+    transform: translateY(24px);
+  }
+
+  &__title {
+    font-size: 16px;
+    font-weight: bold;
+    text-align: left;
+  }
+
+  &__download-options {
+    display: flex;
+    margin: 0;
+    padding: 0;
+    gap: globals.$spacing-unit;
+    flex-wrap: wrap;
+    list-style: none;
+  }
+
+  &__specifics {
+    display: flex;
+    gap: calc(globals.$spacing-unit * 2);
+    justify-content: center;
+  }
+
+  &__specifics-item {
+    gap: globals.$spacing-unit;
+    display: flex;
+    color: globals.$muted-color;
+    font-size: 12px;
+    align-items: flex-end;
+  }
+
+  &__title-container {
+    display: flex;
+    align-items: center;
+    gap: globals.$spacing-unit;
+    color: globals.$muted-color;
+  }
+
+  &__shop-icon {
+    width: 20px;
+    height: 20px;
+    min-width: 20px;
+  }
+
+  &__no-download-label {
+    color: globals.$body-color;
+    font-weight: bold;
+  }
+
+  &:hover &__cover {
+    transform: scale(1.05);
+  }
+  &:hover &__content {
+    transform: translateY(0px);
+  }
+}
diff --git a/src/renderer/src/components/game-card/game-card.tsx b/src/renderer/src/components/game-card/game-card.tsx
index 869cb2d6..62290704 100644
--- a/src/renderer/src/components/game-card/game-card.tsx
+++ b/src/renderer/src/components/game-card/game-card.tsx
@@ -3,7 +3,8 @@ import type { CatalogueEntry, GameRepack, GameStats } from "@types";
 
 import SteamLogo from "@renderer/assets/steam-logo.svg?react";
 
-import * as styles from "./game-card.css";
+import "./game-card.scss";
+
 import { useTranslation } from "react-i18next";
 import { Badge } from "../badge/badge";
 import { useCallback, useContext, useEffect, useState } from "react";
@@ -19,7 +20,7 @@ export interface GameCardProps
 }
 
 const shopIcon = {
-  steam: <SteamLogo className={styles.shopIcon} />,
+  steam: <SteamLogo className="game-card__shop-icon" />,
 };
 
 export function GameCard({ game, ...props }: GameCardProps) {
@@ -56,25 +57,25 @@ export function GameCard({ game, ...props }: GameCardProps) {
     <button
       {...props}
       type="button"
-      className={styles.card}
+      className="game-card"
       onMouseEnter={handleHover}
     >
-      <div className={styles.backdrop}>
+      <div className="game-card__backdrop">
         <img
           src={game.cover}
           alt={game.title}
-          className={styles.cover}
+          className="game-card__cover"
           loading="lazy"
         />
 
-        <div className={styles.content}>
-          <div className={styles.titleContainer}>
+        <div className="game-card__content">
+          <div className="game-card__title-container">
             {shopIcon[game.shop]}
-            <p className={styles.title}>{game.title}</p>
+            <p className="game-card__title">{game.title}</p>
           </div>
 
           {uniqueRepackers.length > 0 ? (
-            <ul className={styles.downloadOptions}>
+            <ul className="game-card__download-options">
               {uniqueRepackers.map((repacker) => (
                 <li key={repacker}>
                   <Badge>{repacker}</Badge>
@@ -82,17 +83,17 @@ export function GameCard({ game, ...props }: GameCardProps) {
               ))}
             </ul>
           ) : (
-            <p className={styles.noDownloadsLabel}>{t("no_downloads")}</p>
+            <p className="game-card__no-download-label">{t("no_downloads")}</p>
           )}
-          <div className={styles.specifics}>
-            <div className={styles.specificsItem}>
+          <div className="game-card__specifics">
+            <div className="game-card__specifics-item">
               <DownloadIcon />
               <span>
                 {stats ? numberFormatter.format(stats.downloadCount) : "…"}
               </span>
             </div>
 
-            <div className={styles.specificsItem}>
+            <div className="game-card__specifics-item">
               <PeopleIcon />
               <span>
                 {stats ? numberFormatter.format(stats?.playerCount) : "…"}
diff --git a/src/renderer/src/components/header/auto-update-header.scss b/src/renderer/src/components/header/auto-update-header.scss
new file mode 100644
index 00000000..20d4a972
--- /dev/null
+++ b/src/renderer/src/components/header/auto-update-header.scss
@@ -0,0 +1,32 @@
+@use "../../scss/globals.scss";
+
+.auto-update-sub-header {
+  border-bottom: solid 1px globals.$body-color;
+  padding: calc(globals.$spacing-unit / 2) calc(globals.$spacing-unit * 3);
+
+  &__new-version-link {
+    display: flex;
+    align-items: center;
+    gap: globals.$spacing-unit;
+    color: #8e919b;
+    font-size: 12px;
+  }
+
+  &__new-version-icon {
+    color: globals.$success-color;
+  }
+
+  &__new-version-button {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    gap: globals.$spacing-unit;
+    color: globals.$body-color;
+    font-size: 12px;
+
+    &:hover {
+      text-decoration: underline;
+      cursor: pointer;
+    }
+  }
+}
diff --git a/src/renderer/src/components/header/auto-update-sub-header.tsx b/src/renderer/src/components/header/auto-update-sub-header.tsx
index 005cdfda..063cb78d 100644
--- a/src/renderer/src/components/header/auto-update-sub-header.tsx
+++ b/src/renderer/src/components/header/auto-update-sub-header.tsx
@@ -2,7 +2,7 @@ import { useTranslation } from "react-i18next";
 import { useEffect, useState } from "react";
 import { SyncIcon } from "@primer/octicons-react";
 import { Link } from "../link/link";
-import * as styles from "./header.css";
+import "./auto-update-header.scss";
 import type { AppUpdaterEvent } from "@types";
 
 export const releasesPageUrl =
@@ -45,9 +45,15 @@ export function AutoUpdateSubHeader() {
 
   if (!isAutoInstallAvailable) {
     return (
-      <header className={styles.subheader}>
-        <Link to={releasesPageUrl} className={styles.newVersionLink}>
-          <SyncIcon className={styles.newVersionIcon} size={12} />
+      <header className="auto-update-sub-header">
+        <Link
+          to={releasesPageUrl}
+          className="auto-update-sub-header__new-version-link"
+        >
+          <SyncIcon
+            className="auto-update-sub-header__new-version-icon"
+            size={12}
+          />
           {t("version_available_download", { version: newVersion })}
         </Link>
       </header>
@@ -56,13 +62,16 @@ export function AutoUpdateSubHeader() {
 
   if (isReadyToInstall) {
     return (
-      <header className={styles.subheader}>
+      <header className="auto-update-sub-header">
         <button
           type="button"
-          className={styles.newVersionButton}
+          className="auto-update-sub-header__new-version-button"
           onClick={handleClickInstallUpdate}
         >
-          <SyncIcon className={styles.newVersionIcon} size={12} />
+          <SyncIcon
+            className="auto-update-sub-header__new-version-icon"
+            size={12}
+          />
           {t("version_available_install", { version: newVersion })}
         </button>
       </header>
diff --git a/src/renderer/src/components/header/header.css.ts b/src/renderer/src/components/header/header.css.ts
deleted file mode 100644
index 12855986..00000000
--- a/src/renderer/src/components/header/header.css.ts
+++ /dev/null
@@ -1,182 +0,0 @@
-import type { ComplexStyleRule } from "@vanilla-extract/css";
-import { keyframes, style } from "@vanilla-extract/css";
-import { recipe } from "@vanilla-extract/recipes";
-
-import { SPACING_UNIT, vars } from "../../theme.css";
-
-export const slideIn = keyframes({
-  "0%": { transform: "translateX(20px)", opacity: "0" },
-  "100%": {
-    transform: "translateX(0)",
-    opacity: "1",
-  },
-});
-
-export const slideOut = keyframes({
-  "0%": { transform: "translateX(0px)", opacity: "1" },
-  "100%": {
-    transform: "translateX(20px)",
-    opacity: "0",
-  },
-});
-
-export const header = recipe({
-  base: {
-    display: "flex",
-    justifyContent: "space-between",
-    alignItems: "center",
-    gap: `${SPACING_UNIT * 2}px`,
-    WebkitAppRegion: "drag",
-    width: "100%",
-    padding: `${SPACING_UNIT * 2}px ${SPACING_UNIT * 3}px`,
-    color: vars.color.muted,
-    borderBottom: `solid 1px ${vars.color.border}`,
-    backgroundColor: vars.color.darkBackground,
-  } as ComplexStyleRule,
-  variants: {
-    draggingDisabled: {
-      true: {
-        WebkitAppRegion: "no-drag",
-      } as ComplexStyleRule,
-    },
-    isWindows: {
-      true: {
-        WebkitAppRegion: "no-drag",
-      } as ComplexStyleRule,
-    },
-  },
-});
-
-export const search = recipe({
-  base: {
-    backgroundColor: vars.color.background,
-    display: "inline-flex",
-    transition: "all ease 0.2s",
-    width: "200px",
-    alignItems: "center",
-    borderRadius: "8px",
-    border: `solid 1px ${vars.color.border}`,
-    height: "40px",
-    WebkitAppRegion: "no-drag",
-  } as ComplexStyleRule,
-  variants: {
-    focused: {
-      true: {
-        width: "250px",
-        borderColor: "#DADBE1",
-      },
-      false: {
-        ":hover": {
-          borderColor: "rgba(255, 255, 255, 0.5)",
-        },
-      },
-    },
-  },
-});
-
-export const searchInput = style({
-  backgroundColor: "transparent",
-  border: "none",
-  width: "100%",
-  height: "100%",
-  outline: "none",
-  color: "#DADBE1",
-  cursor: "default",
-  fontFamily: "inherit",
-  textOverflow: "ellipsis",
-  ":focus": {
-    cursor: "text",
-  },
-});
-
-export const actionButton = style({
-  color: "inherit",
-  cursor: "pointer",
-  transition: "all ease 0.2s",
-  padding: `${SPACING_UNIT}px`,
-  ":hover": {
-    color: "#DADBE1",
-  },
-});
-
-export const section = style({
-  display: "flex",
-  alignItems: "center",
-  gap: `${SPACING_UNIT * 2}px`,
-  height: "100%",
-  overflow: "hidden",
-});
-
-export const backButton = recipe({
-  base: {
-    color: vars.color.body,
-    cursor: "pointer",
-    WebkitAppRegion: "no-drag",
-    position: "absolute",
-    transition: "transform ease 0.2s",
-    animationDuration: "0.2s",
-    width: "16px",
-    height: "16px",
-    display: "flex",
-    alignItems: "center",
-  } as ComplexStyleRule,
-  variants: {
-    enabled: {
-      true: {
-        animationName: slideIn,
-      },
-      false: {
-        opacity: "0",
-        pointerEvents: "none",
-        animationName: slideOut,
-      },
-    },
-  },
-});
-
-export const title = recipe({
-  base: {
-    transition: "all ease 0.2s",
-    overflow: "hidden",
-    textOverflow: "ellipsis",
-    width: "100%",
-  },
-  variants: {
-    hasBackButton: {
-      true: {
-        transform: "translateX(28px)",
-        width: "calc(100% - 28px)",
-      },
-    },
-  },
-});
-
-export const subheader = style({
-  borderBottom: `solid 1px ${vars.color.border}`,
-  padding: `${SPACING_UNIT / 2}px ${SPACING_UNIT * 3}px`,
-});
-
-export const newVersionButton = style({
-  display: "flex",
-  alignItems: "center",
-  justifyContent: "center",
-  gap: `${SPACING_UNIT}px`,
-  color: vars.color.body,
-  fontSize: "12px",
-  ":hover": {
-    textDecoration: "underline",
-    cursor: "pointer",
-  },
-});
-
-export const newVersionLink = style({
-  display: "flex",
-  alignItems: "center",
-  gap: `${SPACING_UNIT}px`,
-  color: "#8e919b",
-  fontSize: "12px",
-});
-
-export const newVersionIcon = style({
-  color: vars.color.success,
-});
diff --git a/src/renderer/src/components/header/header.scss b/src/renderer/src/components/header/header.scss
new file mode 100644
index 00000000..065aed8d
--- /dev/null
+++ b/src/renderer/src/components/header/header.scss
@@ -0,0 +1,132 @@
+@use "../../scss/globals.scss";
+
+.header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  gap: calc(globals.$spacing-unit * 2);
+  -webkit-app-region: drag;
+  width: 100%;
+  padding: calc(globals.$spacing-unit * 2) calc(globals.$spacing-unit * 3);
+  color: globals.$muted-color;
+  border-bottom: solid 1px globals.$border-color;
+
+  &--dragging-disabled {
+    -webkit-app-region: no-drag;
+  }
+
+  &--is-windows {
+    -webkit-app-region: no-drag;
+  }
+
+  &__search {
+    background-color: globals.$dark-background-color;
+    display: inline-flex;
+    transition: all ease 0.2s;
+    width: 200px;
+    align-items: center;
+    border-radius: 8px;
+    border: solid 1px globals.$border-color;
+    height: 40px;
+    -webkit-app-region: no-drag;
+    &:hover {
+      border-color: rgba(255, 255, 255, 0.5);
+    }
+
+    &--focused {
+      width: 250px;
+      border-color: #dadbe1;
+    }
+  }
+
+  &__search-input {
+    background-color: transparent;
+    border: none;
+    width: 100%;
+    height: 100%;
+    outline: none;
+    color: #dadbe1;
+    cursor: default;
+    font-family: inherit;
+    text-overflow: ellipsis;
+
+    &:focus {
+      cursor: text;
+    }
+  }
+
+  &__action-button {
+    color: inherit;
+    cursor: pointer;
+    transition: all ease 0.2s;
+    padding: globals.$spacing-unit;
+
+    &:hover {
+      color: #dadbe1;
+    }
+  }
+
+  &__section {
+    display: flex;
+    align-items: center;
+    gap: calc(globals.$spacing-unit * 2);
+    height: 100%;
+    overflow: hidden;
+  }
+
+  &__back-button {
+    color: globals.$body-color;
+    cursor: pointer;
+    -webkit-app-region: no-drag;
+    position: absolute;
+    transition: transform ease 0.2s;
+    animation-duration: 0.2s;
+    width: 16px;
+    height: 16px;
+    display: flex;
+    align-items: center;
+    opacity: 0;
+    pointer-events: none;
+    animation-name: slide-out;
+
+    &--enabled {
+      animation: slide-in;
+      opacity: 1;
+      pointer-events: all;
+    }
+  }
+
+  &__title {
+    transition: all ease 0.2s;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    width: 100%;
+
+    &--has-back-button {
+      transform: translateX(28px);
+      width: calc(100% - 28px);
+    }
+  }
+}
+
+@keyframes slide-in {
+  0% {
+    transform: translateX(20px);
+    opacity: 0;
+  }
+  100% {
+    transform: translateX(0);
+    opacity: 1;
+  }
+}
+
+@keyframes slide-out {
+  0% {
+    transform: translateX(0px);
+    opacity: 1;
+  }
+  100% {
+    transform: translateX(20px);
+    opacity: 0;
+  }
+}
diff --git a/src/renderer/src/components/header/header.tsx b/src/renderer/src/components/header/header.tsx
index e0721df4..83d32caa 100644
--- a/src/renderer/src/components/header/header.tsx
+++ b/src/renderer/src/components/header/header.tsx
@@ -5,9 +5,11 @@ import { ArrowLeftIcon, SearchIcon, XIcon } from "@primer/octicons-react";
 
 import { useAppDispatch, useAppSelector } from "@renderer/hooks";
 
-import * as styles from "./header.css";
+import "./header.scss";
+
 import { clearSearch } from "@renderer/features";
 import { AutoUpdateSubHeader } from "./auto-update-sub-header";
+import cn from "classnames";
 
 export interface HeaderProps {
   onSearch: (query: string) => void;
@@ -68,16 +70,16 @@ export function Header({ onSearch, onClear, search }: HeaderProps) {
   return (
     <>
       <header
-        className={styles.header({
-          draggingDisabled,
-          isWindows: window.electron.platform === "win32",
+        className={cn("header", {
+          "header--dragging-disabled": draggingDisabled,
+          "header--is-windows": window.electron.platform === "win32",
         })}
       >
-        <section className={styles.section} style={{ flex: 1 }}>
+        <section className="header__section" style={{ flex: 1 }}>
           <button
             type="button"
-            className={styles.backButton({
-              enabled: location.key !== "default",
+            className={cn("header__back-button", {
+              "header__back-button--enabled": location.key !== "default",
             })}
             onClick={handleBackButtonClick}
             disabled={location.key === "default"}
@@ -86,19 +88,23 @@ export function Header({ onSearch, onClear, search }: HeaderProps) {
           </button>
 
           <h3
-            className={styles.title({
-              hasBackButton: location.key !== "default",
+            className={cn("header__title", {
+              "header__title--has-back-button": location.key !== "default",
             })}
           >
             {title}
           </h3>
         </section>
 
-        <section className={styles.section}>
-          <div className={styles.search({ focused: isFocused })}>
+        <section className="header__section">
+          <div
+            className={cn("header__search", {
+              "header__search--focused": isFocused,
+            })}
+          >
             <button
               type="button"
-              className={styles.actionButton}
+              className="header__action-button"
               onClick={focusInput}
             >
               <SearchIcon />
@@ -110,7 +116,7 @@ export function Header({ onSearch, onClear, search }: HeaderProps) {
               name="search"
               placeholder={t("search")}
               value={search}
-              className={styles.searchInput}
+              className="header__search-input"
               onChange={(event) => onSearch(event.target.value)}
               onFocus={() => setIsFocused(true)}
               onBlur={handleBlur}
@@ -120,7 +126,7 @@ export function Header({ onSearch, onClear, search }: HeaderProps) {
               <button
                 type="button"
                 onClick={onClear}
-                className={styles.actionButton}
+                className="header__action-button"
               >
                 <XIcon />
               </button>
diff --git a/src/renderer/src/components/hero/hero.css.ts b/src/renderer/src/components/hero/hero.css.ts
deleted file mode 100644
index eaf0a101..00000000
--- a/src/renderer/src/components/hero/hero.css.ts
+++ /dev/null
@@ -1,60 +0,0 @@
-import { style } from "@vanilla-extract/css";
-
-import { SPACING_UNIT, vars } from "../../theme.css";
-
-export const hero = style({
-  width: "100%",
-  height: "280px",
-  minHeight: "280px",
-  maxHeight: "280px",
-  borderRadius: "4px",
-  color: "#DADBE1",
-  overflow: "hidden",
-  boxShadow: "0px 0px 15px 0px #000000",
-  cursor: "pointer",
-  border: `solid 1px ${vars.color.border}`,
-  zIndex: "1",
-});
-
-export const heroMedia = style({
-  objectFit: "cover",
-  objectPosition: "center",
-  position: "absolute",
-  zIndex: "-1",
-  width: "100%",
-  height: "100%",
-  transition: "all ease 0.2s",
-  imageRendering: "revert",
-  selectors: {
-    [`${hero}:hover &`]: {
-      transform: "scale(1.02)",
-    },
-  },
-});
-
-export const backdrop = style({
-  width: "100%",
-  height: "100%",
-  background: "linear-gradient(0deg, rgba(0, 0, 0, 0.8) 25%, transparent 100%)",
-  position: "relative",
-  display: "flex",
-  overflow: "hidden",
-});
-
-export const description = style({
-  maxWidth: "700px",
-  color: vars.color.muted,
-  textAlign: "left",
-  lineHeight: "20px",
-  marginTop: `${SPACING_UNIT * 2}px`,
-});
-
-export const content = style({
-  width: "100%",
-  height: "100%",
-  padding: `${SPACING_UNIT * 4}px ${SPACING_UNIT * 3}px`,
-  gap: `${SPACING_UNIT * 2}px`,
-  display: "flex",
-  flexDirection: "column",
-  justifyContent: "flex-end",
-});
diff --git a/src/renderer/src/components/hero/hero.scss b/src/renderer/src/components/hero/hero.scss
new file mode 100644
index 00000000..ea14c059
--- /dev/null
+++ b/src/renderer/src/components/hero/hero.scss
@@ -0,0 +1,56 @@
+@use "../../scss/globals.scss";
+
+.hero {
+  width: 100%;
+  height: 280px;
+  min-height: 280px;
+  max-height: 280px;
+  border-radius: 4px;
+  color: #dadbe1;
+  overflow: hidden;
+  box-shadow: 0px 0px 15px 0px #000000;
+  cursor: pointer;
+  border: solid 1px globals.$border-color;
+  z-index: 1;
+
+  &__media {
+    object-fit: cover;
+    object-position: center;
+    position: absolute;
+    z-index: -1;
+    width: 100%;
+    height: 100%;
+    transition: all ease 0.2s;
+    image-rendering: revert;
+  }
+  &:hover &__media {
+    transform: scale(1.02);
+  }
+
+  &__backdrop {
+    width: 100%;
+    height: 100%;
+    background: linear-gradient(0deg, rgba(0, 0, 0, 0.8) 25%, transparent 100%);
+    position: relative;
+    display: flex;
+    overflow: hidden;
+  }
+
+  &__description {
+    max-width: 700px;
+    color: globals.$muted-color;
+    text-align: left;
+    line-height: 20px;
+    margin-top: calc(globals.$spacing-unit * 2);
+  }
+
+  &__content {
+    width: 100%;
+    height: 100%;
+    padding: calc(globals.$spacing-unit * 4) calc(globals.$spacing-unit * 3);
+    gap: calc(globals.$spacing-unit * 2);
+    display: flex;
+    flex-direction: column;
+    justify-content: flex-end;
+  }
+}
diff --git a/src/renderer/src/components/hero/hero.tsx b/src/renderer/src/components/hero/hero.tsx
index 9bc5514d..b7a75c47 100644
--- a/src/renderer/src/components/hero/hero.tsx
+++ b/src/renderer/src/components/hero/hero.tsx
@@ -1,9 +1,9 @@
 import { useNavigate } from "react-router-dom";
-import * as styles from "./hero.css";
 import { useEffect, useState } from "react";
 import type { TrendingGame } from "@types";
 import { useTranslation } from "react-i18next";
 import Skeleton from "react-loading-skeleton";
+import "./hero.scss";
 
 export function Hero() {
   const [featuredGameDetails, setFeaturedGameDetails] = useState<
@@ -29,7 +29,7 @@ export function Hero() {
   }, [i18n.language]);
 
   if (isLoading) {
-    return <Skeleton className={styles.hero} />;
+    return <Skeleton className="hero" />;
   }
 
   if (featuredGameDetails?.length) {
@@ -37,17 +37,17 @@ export function Hero() {
       <button
         type="button"
         onClick={() => navigate(game.uri)}
-        className={styles.hero}
+        className="hero"
         key={index}
       >
-        <div className={styles.backdrop}>
+        <div className="hero__backdrop">
           <img
             src={game.background}
             alt={game.description}
-            className={styles.heroMedia}
+            className="hero__media"
           />
 
-          <div className={styles.content}>
+          <div className="hero__content">
             {game.logo && (
               <img
                 src={game.logo}
@@ -56,7 +56,7 @@ export function Hero() {
                 loading="eager"
               />
             )}
-            <p className={styles.description}>{game.description}</p>
+            <p className="hero__description">{game.description}</p>
           </div>
         </div>
       </button>
diff --git a/src/renderer/src/components/link/link.css.ts b/src/renderer/src/components/link/link.css.ts
deleted file mode 100644
index 4f0e4c41..00000000
--- a/src/renderer/src/components/link/link.css.ts
+++ /dev/null
@@ -1,9 +0,0 @@
-import { style } from "@vanilla-extract/css";
-
-export const link = style({
-  textDecoration: "none",
-  color: "#C0C1C7",
-  ":hover": {
-    textDecoration: "underline",
-  },
-});
diff --git a/src/renderer/src/components/link/link.scss b/src/renderer/src/components/link/link.scss
new file mode 100644
index 00000000..170f10f6
--- /dev/null
+++ b/src/renderer/src/components/link/link.scss
@@ -0,0 +1,7 @@
+.link {
+  text-decoration: none;
+  color: #c0c1c7;
+  &:hover {
+    text-decoration: underline;
+  }
+}
diff --git a/src/renderer/src/components/link/link.tsx b/src/renderer/src/components/link/link.tsx
index ffd5f89c..1c3bad76 100644
--- a/src/renderer/src/components/link/link.tsx
+++ b/src/renderer/src/components/link/link.tsx
@@ -1,6 +1,6 @@
 import { Link as ReactRouterDomLink, LinkProps } from "react-router-dom";
 import cn from "classnames";
-import * as styles from "./link.css";
+import "./link.scss";
 
 export function Link({ children, to, className, ...props }: LinkProps) {
   const openExternal = (event: React.MouseEvent) => {
@@ -12,7 +12,7 @@ export function Link({ children, to, className, ...props }: LinkProps) {
     return (
       <a
         href={to}
-        className={cn(styles.link, className)}
+        className={cn("link", className)}
         onClick={openExternal}
         {...props}
       >
@@ -22,11 +22,7 @@ export function Link({ children, to, className, ...props }: LinkProps) {
   }
 
   return (
-    <ReactRouterDomLink
-      className={cn(styles.link, className)}
-      to={to}
-      {...props}
-    >
+    <ReactRouterDomLink className={cn("link", className)} to={to} {...props}>
       {children}
     </ReactRouterDomLink>
   );
diff --git a/src/renderer/src/components/modal/modal.css.ts b/src/renderer/src/components/modal/modal.css.ts
deleted file mode 100644
index d9d14fda..00000000
--- a/src/renderer/src/components/modal/modal.css.ts
+++ /dev/null
@@ -1,78 +0,0 @@
-import { keyframes, style } from "@vanilla-extract/css";
-import { recipe } from "@vanilla-extract/recipes";
-
-import { SPACING_UNIT, vars } from "../../theme.css";
-
-export const scaleFadeIn = keyframes({
-  "0%": { opacity: "0", scale: "0.5" },
-  "100%": {
-    opacity: "1",
-    scale: "1",
-  },
-});
-
-export const scaleFadeOut = keyframes({
-  "0%": { opacity: "1", scale: "1" },
-  "100%": {
-    opacity: "0",
-    scale: "0.5",
-  },
-});
-
-export const modal = recipe({
-  base: {
-    animation: `${scaleFadeIn} 0.2s cubic-bezier(0.33, 1, 0.68, 1) 0s 1 normal none running`,
-    backgroundColor: vars.color.background,
-    borderRadius: "4px",
-    minWidth: "400px",
-    maxWidth: "600px",
-    color: vars.color.body,
-    maxHeight: "100%",
-    border: `solid 1px ${vars.color.border}`,
-    overflow: "hidden",
-    display: "flex",
-    flexDirection: "column",
-  },
-  variants: {
-    closing: {
-      true: {
-        animationName: scaleFadeOut,
-        opacity: "0",
-      },
-    },
-    large: {
-      true: {
-        width: "800px",
-        maxWidth: "800px",
-      },
-    },
-  },
-});
-
-export const modalContent = style({
-  height: "100%",
-  overflow: "auto",
-  padding: `${SPACING_UNIT * 3}px ${SPACING_UNIT * 2}px`,
-});
-
-export const modalHeader = style({
-  display: "flex",
-  gap: `${SPACING_UNIT}px`,
-  padding: `${SPACING_UNIT * 2}px`,
-  borderBottom: `solid 1px ${vars.color.border}`,
-  justifyContent: "space-between",
-  alignItems: "center",
-});
-
-export const closeModalButton = style({
-  cursor: "pointer",
-  transition: "all ease 0.2s",
-  alignSelf: "flex-start",
-  ":hover": {
-    opacity: "0.75",
-  },
-});
-
-export const closeModalButtonIcon = style({
-  color: vars.color.body,
-});
diff --git a/src/renderer/src/components/modal/modal.scss b/src/renderer/src/components/modal/modal.scss
new file mode 100644
index 00000000..dbaee730
--- /dev/null
+++ b/src/renderer/src/components/modal/modal.scss
@@ -0,0 +1,77 @@
+@use "../../scss/globals.scss";
+
+.modal {
+  animation: scale-fade-in 0.2s cubic-bezier(0.33, 1, 0.68, 1) 0s 1 normal none
+    running;
+  background-color: globals.$background-color;
+  border-radius: 4px;
+  min-width: 400px;
+  max-width: 600px;
+  color: globals.$body-color;
+  max-height: 100%;
+  border: solid 1px globals.$border-color;
+  overflow: hidden;
+  display: flex;
+  flex-direction: column;
+
+  &--closing {
+    animation-name: scale-fade-out;
+    opacity: 0;
+  }
+
+  &--large {
+    width: 800px;
+    max-width: 800px;
+  }
+
+  &__content {
+    height: 100%;
+    overflow: auto;
+    padding: calc(globals.$spacing-unit * 3) calc(globals.$spacing-unit * 2);
+  }
+
+  &__header {
+    display: flex;
+    gap: globals.$spacing-unit;
+    padding: calc(globals.$spacing-unit * 2);
+    border-bottom: solid 1px globals.$border-color;
+    justify-content: space-between;
+    align-items: center;
+  }
+
+  &__close-button {
+    cursor: pointer;
+    transition: all ease 0.2s;
+    align-self: flex-start;
+
+    &:hover {
+      opacity: 0.75;
+    }
+  }
+
+  &__close-button-icon {
+    color: globals.$body-color;
+  }
+}
+
+@keyframes scale-fade-in {
+  0% {
+    opacity: 0;
+    scale: 0.5;
+  }
+  100% {
+    opacity: 1;
+    scale: 1;
+  }
+}
+
+@keyframes scale-fade-out {
+  0% {
+    opacity: 1;
+    scale: 1;
+  }
+  100% {
+    opacity: 0;
+    scale: 0.5;
+  }
+}
diff --git a/src/renderer/src/components/modal/modal.tsx b/src/renderer/src/components/modal/modal.tsx
index eb2894de..3eceedb3 100644
--- a/src/renderer/src/components/modal/modal.tsx
+++ b/src/renderer/src/components/modal/modal.tsx
@@ -2,10 +2,11 @@ import { useCallback, useEffect, useRef, useState } from "react";
 import { createPortal } from "react-dom";
 import { XIcon } from "@primer/octicons-react";
 
-import * as styles from "./modal.css";
+import "./modal.scss";
 
 import { Backdrop } from "../backdrop/backdrop";
 import { useTranslation } from "react-i18next";
+import cn from "classnames";
 
 export interface ModalProps {
   visible: boolean;
@@ -102,13 +103,16 @@ export function Modal({
   return createPortal(
     <Backdrop isClosing={isClosing}>
       <div
-        className={styles.modal({ closing: isClosing, large })}
+        className={cn("modal", {
+          "modal--closing": isClosing,
+          "modal--large": large,
+        })}
         role="dialog"
         aria-labelledby={title}
         aria-describedby={description}
         ref={modalContentRef}
       >
-        <div className={styles.modalHeader}>
+        <div className="modal__header">
           <div style={{ display: "flex", gap: 4, flexDirection: "column" }}>
             <h3>{title}</h3>
             {description && <p>{description}</p>}
@@ -117,13 +121,13 @@ export function Modal({
           <button
             type="button"
             onClick={handleCloseClick}
-            className={styles.closeModalButton}
+            className="modal__close-button"
             aria-label={t("close")}
           >
-            <XIcon className={styles.closeModalButtonIcon} size={24} />
+            <XIcon className="modal__close-button-icon" size={24} />
           </button>
         </div>
-        <div className={styles.modalContent}>{children}</div>
+        <div className="modal__content">{children}</div>
       </div>
     </Backdrop>,
     document.body
diff --git a/src/renderer/src/components/select-field/select-field.css.ts b/src/renderer/src/components/select-field/select-field.css.ts
deleted file mode 100644
index 7acd4e98..00000000
--- a/src/renderer/src/components/select-field/select-field.css.ts
+++ /dev/null
@@ -1,59 +0,0 @@
-import { style } from "@vanilla-extract/css";
-import { recipe } from "@vanilla-extract/recipes";
-
-import { SPACING_UNIT, vars } from "../../theme.css";
-
-export const select = recipe({
-  base: {
-    display: "inline-flex",
-    transition: "all ease 0.2s",
-    width: "fit-content",
-    alignItems: "center",
-    borderRadius: "8px",
-    border: `1px solid ${vars.color.border}`,
-    height: "40px",
-    minHeight: "40px",
-  },
-  variants: {
-    focused: {
-      true: {
-        borderColor: "#DADBE1",
-      },
-      false: {
-        ":hover": {
-          borderColor: "rgba(255, 255, 255, 0.5)",
-        },
-      },
-    },
-    theme: {
-      primary: {
-        backgroundColor: vars.color.darkBackground,
-      },
-      dark: {
-        backgroundColor: vars.color.background,
-      },
-    },
-  },
-});
-
-export const option = style({
-  backgroundColor: vars.color.darkBackground,
-  borderRight: "4px solid",
-  borderColor: "transparent",
-  borderRadius: "8px",
-  width: "fit-content",
-  height: "100%",
-  outline: "none",
-  color: "#DADBE1",
-  cursor: "default",
-  fontFamily: "inherit",
-  fontSize: vars.size.body,
-  textOverflow: "ellipsis",
-  padding: `${SPACING_UNIT}px`,
-});
-
-export const label = style({
-  marginBottom: `${SPACING_UNIT}px`,
-  display: "block",
-  color: vars.color.body,
-});
diff --git a/src/renderer/src/components/select-field/select-field.scss b/src/renderer/src/components/select-field/select-field.scss
new file mode 100644
index 00000000..38dfc65b
--- /dev/null
+++ b/src/renderer/src/components/select-field/select-field.scss
@@ -0,0 +1,49 @@
+@use "../../scss/globals.scss";
+
+.select-field {
+  display: inline-flex;
+  transition: all ease 0.2s;
+  width: fit-content;
+  align-items: center;
+  border-radius: 8px;
+  border: 1px solid globals.$border-color;
+  height: 40px;
+  min-height: 40px;
+  &:hover {
+    border-color: rgba(255, 255, 255, 0.5);
+  }
+
+  &--focused {
+    border-color: #dadbe1;
+  }
+
+  &--primary {
+    background-color: globals.$dark-background-color;
+  }
+
+  &--dark {
+    background-color: globals.$background-color;
+  }
+
+  &__option {
+    background-color: globals.$dark-background-color;
+    border-right: 4px solid;
+    border-color: transparent;
+    border-radius: 8px;
+    width: fit-content;
+    height: 100%;
+    outline: none;
+    color: #dadbe1;
+    cursor: default;
+    font-family: inherit;
+    font-size: globals.$body-font-size;
+    text-overflow: ellipsis;
+    padding: globals.$spacing-unit;
+  }
+
+  &__label {
+    margin-bottom: globals.$spacing-unit;
+    display: block;
+    color: globals.$body-color;
+  }
+}
diff --git a/src/renderer/src/components/select-field/select-field.tsx b/src/renderer/src/components/select-field/select-field.tsx
index fb5038f6..16b266cd 100644
--- a/src/renderer/src/components/select-field/select-field.tsx
+++ b/src/renderer/src/components/select-field/select-field.tsx
@@ -1,13 +1,13 @@
 import { useId, useState } from "react";
-import type { RecipeVariants } from "@vanilla-extract/recipes";
-import * as styles from "./select-field.css";
+import "./select-field.scss";
+import cn from "classnames";
 
 export interface SelectProps
   extends React.DetailedHTMLProps<
     React.SelectHTMLAttributes<HTMLSelectElement>,
     HTMLSelectElement
   > {
-  theme?: NonNullable<RecipeVariants<typeof styles.select>>["theme"];
+  theme?: "primary" | "dark";
   label?: string;
   options?: { key: string; value: string; label: string }[];
 }
@@ -25,16 +25,20 @@ export function SelectField({
   return (
     <div style={{ flex: 1 }}>
       {label && (
-        <label htmlFor={id} className={styles.label}>
+        <label htmlFor={id} className="select-field__label">
           {label}
         </label>
       )}
 
-      <div className={styles.select({ focused: isFocused, theme })}>
+      <div
+        className={cn("select-field", `select-field--${theme}`, {
+          "select-field--focused": isFocused,
+        })}
+      >
         <select
           id={id}
           value={value}
-          className={styles.option}
+          className="select-field__option"
           onFocus={() => setIsFocused(true)}
           onBlur={() => setIsFocused(false)}
           onChange={onChange}
diff --git a/src/renderer/src/components/sidebar/sidebar-profile.css.ts b/src/renderer/src/components/sidebar/sidebar-profile.css.ts
deleted file mode 100644
index bed9ac93..00000000
--- a/src/renderer/src/components/sidebar/sidebar-profile.css.ts
+++ /dev/null
@@ -1,79 +0,0 @@
-import { style } from "@vanilla-extract/css";
-
-import { SPACING_UNIT, vars } from "../../theme.css";
-
-export const profileContainer = style({
-  position: "relative",
-  display: "flex",
-  alignItems: "center",
-  gap: `${SPACING_UNIT}px`,
-  padding: `${SPACING_UNIT}px ${SPACING_UNIT * 2}px`,
-});
-
-export const profileButton = style({
-  display: "flex",
-  cursor: "pointer",
-  transition: "all ease 0.1s",
-  color: vars.color.muted,
-  width: "100%",
-  overflow: "hidden",
-  borderRadius: "4px",
-  padding: `${SPACING_UNIT}px ${SPACING_UNIT}px`,
-  ":hover": {
-    backgroundColor: "rgba(255, 255, 255, 0.15)",
-  },
-});
-
-export const profileButtonContent = style({
-  display: "flex",
-  alignItems: "center",
-  gap: `${SPACING_UNIT + SPACING_UNIT / 2}px`,
-  width: "100%",
-});
-
-export const profileButtonInformation = style({
-  display: "flex",
-  flexDirection: "column",
-  alignItems: "flex-start",
-  flex: "1",
-  minWidth: 0,
-});
-
-export const profileButtonTitle = style({
-  fontWeight: "bold",
-  fontSize: vars.size.body,
-  width: "100%",
-  textAlign: "left",
-  overflow: "hidden",
-  textOverflow: "ellipsis",
-  whiteSpace: "nowrap",
-});
-
-export const friendsButton = style({
-  color: vars.color.muted,
-  cursor: "pointer",
-  borderRadius: "50%",
-  width: "40px",
-  minWidth: "40px",
-  minHeight: "40px",
-  height: "40px",
-  backgroundColor: vars.color.background,
-  position: "relative",
-  transition: "all ease 0.3s",
-  ":hover": {
-    backgroundColor: "rgba(255, 255, 255, 0.15)",
-  },
-});
-
-export const friendsButtonBadge = style({
-  backgroundColor: vars.color.success,
-  display: "flex",
-  justifyContent: "center",
-  alignItems: "center",
-  width: "20px",
-  height: "20px",
-  borderRadius: "50%",
-  position: "absolute",
-  top: "-5px",
-  right: "-5px",
-});
diff --git a/src/renderer/src/components/sidebar/sidebar-profile.scss b/src/renderer/src/components/sidebar/sidebar-profile.scss
new file mode 100644
index 00000000..9a6e6bbb
--- /dev/null
+++ b/src/renderer/src/components/sidebar/sidebar-profile.scss
@@ -0,0 +1,77 @@
+@use "../../scss/globals.scss";
+
+.sidebar-profile {
+  position: relative;
+  display: flex;
+  align-items: center;
+  gap: globals.$spacing-unit;
+  padding: globals.$spacing-unit calc(globals.$spacing-unit * 2);
+
+  &__button {
+    display: flex;
+    cursor: pointer;
+    transition: all ease 0.1s;
+    color: globals.$muted-color;
+    width: 100%;
+    overflow: hidden;
+    border-radius: 4px;
+    padding: globals.$spacing-unit globals.$spacing-unit;
+    &:hover {
+      background-color: rgba(255, 255, 255, 0.15);
+    }
+  }
+
+  &__button-content {
+    display: flex;
+    align-items: center;
+    gap: calc(globals.$spacing-unit + globals.$spacing-unit / 2);
+    width: 100%;
+  }
+
+  &__button-information {
+    display: flex;
+    flex-direction: column;
+    align-items: flex-start;
+    flex: 1;
+    min-width: 0;
+  }
+
+  &__button-title {
+    font-weight: bold;
+    font-size: globals.$body-font-size;
+    width: 100%;
+    text-align: left;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+
+  &__friends-button {
+    color: globals.$muted-color;
+    cursor: pointer;
+    border-radius: 50%;
+    width: 40px;
+    min-width: 40px;
+    min-height: 40px;
+    height: 40px;
+    background-color: globals.$background-color;
+    position: relative;
+    transition: all ease 0.3s;
+    &:hover {
+      background-color: rgba(255, 255, 255, 0.15);
+    }
+  }
+
+  &__friends-button-badge {
+    background-color: globals.$success-color;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    width: 20px;
+    height: 20px;
+    border-radius: 50%;
+    position: absolute;
+    top: -5px;
+    right: -5px;
+  }
+}
diff --git a/src/renderer/src/components/sidebar/sidebar-profile.tsx b/src/renderer/src/components/sidebar/sidebar-profile.tsx
index 49e56ab7..2595edea 100644
--- a/src/renderer/src/components/sidebar/sidebar-profile.tsx
+++ b/src/renderer/src/components/sidebar/sidebar-profile.tsx
@@ -1,12 +1,12 @@
 import { useNavigate } from "react-router-dom";
 import { PeopleIcon } from "@primer/octicons-react";
-import * as styles from "./sidebar-profile.css";
 import { useAppSelector, useUserDetails } from "@renderer/hooks";
 import { useEffect, useMemo } from "react";
 import { useTranslation } from "react-i18next";
 import { UserFriendModalTab } from "@renderer/pages/shared-modals/user-friend-modal";
 import SteamLogo from "@renderer/assets/steam-logo.svg?react";
 import { Avatar } from "../avatar/avatar";
+import "./sidebar-profile.scss";
 
 const LONG_POLLING_INTERVAL = 120_000;
 
@@ -49,14 +49,14 @@ export function SidebarProfile() {
     return (
       <button
         type="button"
-        className={styles.friendsButton}
+        className="sidebar-profile__friends-button"
         onClick={() =>
           showFriendsModal(UserFriendModalTab.AddFriend, userDetails.id)
         }
         title={t("friends")}
       >
         {friendRequestCount > 0 && (
-          <small className={styles.friendsButtonBadge}>
+          <small className="sidebar-profile__friends-button-badge">
             {friendRequestCount > 99 ? "99+" : friendRequestCount}
           </small>
         )}
@@ -84,21 +84,21 @@ export function SidebarProfile() {
   };
 
   return (
-    <div className={styles.profileContainer}>
+    <div className="sidebar-profile">
       <button
         type="button"
-        className={styles.profileButton}
+        className="sidebar-profile__button"
         onClick={handleProfileClick}
       >
-        <div className={styles.profileButtonContent}>
+        <div className="sidebar-profile__button-content">
           <Avatar
             size={35}
             src={userDetails?.profileImageUrl}
             alt={userDetails?.displayName}
           />
 
-          <div className={styles.profileButtonInformation}>
-            <p className={styles.profileButtonTitle}>
+          <div className="sidebar-profile__button-information">
+            <p className="sidebar-profile__button-title">
               {userDetails ? userDetails.displayName : t("sign_in")}
             </p>
 
diff --git a/src/renderer/src/components/sidebar/sidebar.css.ts b/src/renderer/src/components/sidebar/sidebar.css.ts
deleted file mode 100644
index bfdb4eea..00000000
--- a/src/renderer/src/components/sidebar/sidebar.css.ts
+++ /dev/null
@@ -1,126 +0,0 @@
-import { style } from "@vanilla-extract/css";
-import { recipe } from "@vanilla-extract/recipes";
-
-import { SPACING_UNIT, vars } from "../../theme.css";
-
-export const sidebar = recipe({
-  base: {
-    backgroundColor: vars.color.darkBackground,
-    color: vars.color.muted,
-    flexDirection: "column",
-    display: "flex",
-    transition: "opacity ease 0.2s",
-    borderRight: `solid 1px ${vars.color.border}`,
-    position: "relative",
-    overflow: "hidden",
-  },
-  variants: {
-    resizing: {
-      true: {
-        opacity: vars.opacity.active,
-        pointerEvents: "none",
-      },
-    },
-    darwin: {
-      true: {
-        paddingTop: `${SPACING_UNIT * 6}px`,
-      },
-      false: {
-        paddingTop: `${SPACING_UNIT}px`,
-      },
-    },
-  },
-});
-
-export const content = style({
-  display: "flex",
-  flexDirection: "column",
-  padding: `${SPACING_UNIT * 2}px`,
-  gap: `${SPACING_UNIT * 2}px`,
-  width: "100%",
-  overflow: "auto",
-});
-
-export const handle = style({
-  width: "5px",
-  height: "100%",
-  cursor: "col-resize",
-  position: "absolute",
-  right: "0",
-});
-
-export const menu = style({
-  listStyle: "none",
-  padding: "0",
-  margin: "0",
-  gap: `${SPACING_UNIT / 2}px`,
-  display: "flex",
-  flexDirection: "column",
-  overflow: "hidden",
-});
-
-export const menuItem = recipe({
-  base: {
-    transition: "all ease 0.1s",
-    cursor: "pointer",
-    textWrap: "nowrap",
-    display: "flex",
-    color: vars.color.muted,
-    borderRadius: "4px",
-    ":hover": {
-      backgroundColor: "rgba(255, 255, 255, 0.15)",
-    },
-  },
-  variants: {
-    active: {
-      true: {
-        backgroundColor: "rgba(255, 255, 255, 0.1)",
-      },
-    },
-    muted: {
-      true: {
-        opacity: vars.opacity.disabled,
-        ":hover": {
-          opacity: "1",
-        },
-      },
-    },
-  },
-});
-
-export const menuItemButton = style({
-  color: "inherit",
-  display: "flex",
-  alignItems: "center",
-  gap: `${SPACING_UNIT}px`,
-  cursor: "pointer",
-  overflow: "hidden",
-  width: "100%",
-  padding: `9px ${SPACING_UNIT}px`,
-});
-
-export const menuItemButtonLabel = style({
-  textOverflow: "ellipsis",
-  overflow: "hidden",
-});
-
-export const gameIcon = style({
-  width: "20px",
-  height: "20px",
-  minWidth: "20px",
-  minHeight: "20px",
-  borderRadius: "4px",
-  backgroundSize: "cover",
-});
-
-export const sectionTitle = style({
-  textTransform: "uppercase",
-  fontWeight: "bold",
-});
-
-export const section = style({
-  gap: `${SPACING_UNIT * 2}px`,
-  display: "flex",
-  flexDirection: "column",
-  paddingBottom: `${SPACING_UNIT}px`,
-});
diff --git a/src/renderer/src/components/sidebar/sidebar.scss b/src/renderer/src/components/sidebar/sidebar.scss
new file mode 100644
index 00000000..b950a820
--- /dev/null
+++ b/src/renderer/src/components/sidebar/sidebar.scss
@@ -0,0 +1,110 @@
+@use "../../scss/globals.scss";
+
+.sidebar {
+  background-color: globals.$dark-background-color;
+  color: globals.$muted-color;
+  flex-direction: column;
+  display: flex;
+  transition: opacity ease 0.2s;
+  border-right: solid 1px globals.$border-color;
+  position: relative;
+  overflow: hidden;
+  padding-top: globals.$spacing-unit;
+
+  &--resizing {
+    opacity: globals.$active-opacity;
+    pointer-events: none;
+  }
+
+  &--darwin {
+    padding-top: calc(globals.$spacing-unit * 6);
+  }
+
+  &__content {
+    display: flex;
+    flex-direction: column;
+    padding: calc(globals.$spacing-unit * 2);
+    gap: calc(globals.$spacing-unit * 2);
+    width: 100%;
+    overflow: auto;
+  }
+
+  &__handle {
+    width: 5px;
+    height: 100%;
+    cursor: col-resize;
+    position: absolute;
+    right: 0;
+  }
+
+  &__menu {
+    list-style: none;
+    padding: 0;
+    margin: 0;
+    gap: calc(globals.$spacing-unit / 2);
+    display: flex;
+    flex-direction: column;
+    overflow: hidden;
+  }
+
+  &__menu-item {
+    transition: all ease 0.1s;
+    cursor: pointer;
+    text-wrap: nowrap;
+    display: flex;
+    color: globals.$muted-color;
+    border-radius: 4px;
+    &:hover {
+      background-color: rgba(255, 255, 255, 0.15);
+    }
+
+    &--active {
+      background-color: rgba(255, 255, 255, 0.1);
+    }
+
+    &--muted {
+      opacity: globals.$disabled-opacity;
+
+      &:hover {
+        opacity: 1;
+      }
+    }
+  }
+
+  &__menu-item-button {
+    color: inherit;
+    display: flex;
+    align-items: center;
+    gap: globals.$spacing-unit;
+    cursor: pointer;
+    overflow: hidden;
+    width: 100%;
+    padding: 9px globals.$spacing-unit;
+  }
+
+  &__menu-item-button-label {
+    text-overflow: ellipsis;
+    overflow: hidden;
+  }
+
+  &__game-icon {
+    width: 20px;
+    height: 20px;
+    min-width: 20px;
+    min-height: 20px;
+    border-radius: 4px;
+    background-size: cover;
+  }
+
+  &__section-title {
+    text-transform: uppercase;
+    font-weight: bold;
+  }
+
+  &__section {
+    gap: calc(globals.$spacing-unit * 2);
+    display: flex;
+    flex-direction: column;
+    padding-bottom: globals.$spacing-unit;
+  }
+}
diff --git a/src/renderer/src/components/sidebar/sidebar.tsx b/src/renderer/src/components/sidebar/sidebar.tsx
index 3159ecac..9c27c893 100644
--- a/src/renderer/src/components/sidebar/sidebar.tsx
+++ b/src/renderer/src/components/sidebar/sidebar.tsx
@@ -9,12 +9,14 @@ import { useDownload, useLibrary, useToast } from "@renderer/hooks";
 
 import { routes } from "./routes";
 
-import * as styles from "./sidebar.css";
+import "./sidebar.scss";
+
 import { buildGameDetailsPath } from "@renderer/helpers";
 
 import SteamLogo from "@renderer/assets/steam-logo.svg?react";
 import { SidebarProfile } from "./sidebar-profile";
 import { sortBy } from "lodash-es";
+import cn from "classnames";
 
 const SIDEBAR_MIN_WIDTH = 200;
 const SIDEBAR_INITIAL_WIDTH = 250;
@@ -156,9 +158,9 @@ export function Sidebar() {
   return (
     <aside
       ref={sidebarRef}
-      className={styles.sidebar({
-        resizing: isResizing,
-        darwin: window.electron.platform === "darwin",
+      className={cn("sidebar", {
+        "sidebar--resizing": isResizing,
+        "sidebar--darwin": window.electron.platform === "darwin",
       })}
       style={{
         width: sidebarWidth,
@@ -168,19 +170,19 @@ export function Sidebar() {
     >
       <SidebarProfile />
 
-      <div className={styles.content}>
-        <section className={styles.section}>
-          <ul className={styles.menu}>
+      <div className="sidebar__content">
+        <section className="sidebar__section">
+          <ul className="sidebar__menu">
             {routes.map(({ nameKey, path, render }) => (
               <li
                 key={nameKey}
-                className={styles.menuItem({
-                  active: location.pathname === path,
+                className={cn("sidebar__menu-item", {
+                  "sidebar__menu-item--active": location.pathname === path,
                 })}
               >
                 <button
                   type="button"
-                  className={styles.menuItemButton}
+                  className="sidebar__menu-item-button"
                   onClick={() => handleSidebarItemClick(path)}
                 >
                   {render()}
@@ -191,8 +193,8 @@ export function Sidebar() {
           </ul>
         </section>
 
-        <section className={styles.section}>
-          <small className={styles.sectionTitle}>{t("my_library")}</small>
+        <section className="sidebar__section">
+          <small className="sidebar__section-title">{t("my_library")}</small>
 
           <TextField
             ref={filterRef}
@@ -201,33 +203,33 @@ export function Sidebar() {
             theme="dark"
           />
 
-          <ul className={styles.menu}>
+          <ul className="sidebar__menu">
             {filteredLibrary.map((game) => (
               <li
                 key={game.id}
-                className={styles.menuItem({
-                  active:
+                className={cn("sidebar__menu-item", {
+                  "sidebar__menu-item--active":
                     location.pathname === `/game/${game.shop}/${game.objectID}`,
-                  muted: game.status === "removed",
+                  "sidebar__menu-item--muted": game.status === "removed",
                 })}
               >
                 <button
                   type="button"
-                  className={styles.menuItemButton}
+                  className="sidebar__menu-item-button"
                   onClick={(event) => handleSidebarGameClick(event, game)}
                 >
                   {game.iconUrl ? (
                     <img
-                      className={styles.gameIcon}
+                      className="sidebar__game-icon"
                       src={game.iconUrl}
                       alt={game.title}
                       loading="lazy"
                     />
                   ) : (
-                    <SteamLogo className={styles.gameIcon} />
+                    <SteamLogo className="sidebar__game-icon" />
                   )}
 
-                  <span className={styles.menuItemButtonLabel}>
+                  <span className="sidebar__menu-item-button-label">
                     {getGameTitle(game)}
                   </span>
                 </button>
@@ -239,7 +241,7 @@ export function Sidebar() {
 
       <button
         type="button"
-        className={styles.handle}
+        className="sidebar__handle"
         onMouseDown={handleMouseDown}
       />
     </aside>
diff --git a/src/renderer/src/components/text-field/text-field.css.ts b/src/renderer/src/components/text-field/text-field.css.ts
deleted file mode 100644
index f983508e..00000000
--- a/src/renderer/src/components/text-field/text-field.css.ts
+++ /dev/null
@@ -1,89 +0,0 @@
-import { style } from "@vanilla-extract/css";
-import { recipe } from "@vanilla-extract/recipes";
-
-import { SPACING_UNIT, vars } from "../../theme.css";
-
-export const textFieldContainer = style({
-  flex: "1",
-  gap: `${SPACING_UNIT}px`,
-  display: "flex",
-  flexDirection: "column",
-});
-
-export const textField = recipe({
-  base: {
-    display: "inline-flex",
-    transition: "all ease 0.2s",
-    width: "100%",
-    alignItems: "center",
-    borderRadius: "8px",
-    border: `solid 1px ${vars.color.border}`,
-    height: "40px",
-    minHeight: "40px",
-  },
-  variants: {
-    theme: {
-      primary: {
-        backgroundColor: vars.color.darkBackground,
-      },
-      dark: {
-        backgroundColor: vars.color.background,
-      },
-    },
-    hasError: {
-      true: {
-        borderColor: vars.color.danger,
-      },
-    },
-    focused: {
-      true: {
-        borderColor: "#DADBE1",
-      },
-      false: {
-        ":hover": {
-          borderColor: "rgba(255, 255, 255, 0.5)",
-        },
-      },
-    },
-  },
-});
-
-export const textFieldInput = recipe({
-  base: {
-    backgroundColor: "transparent",
-    border: "none",
-    width: "100%",
-    height: "100%",
-    outline: "none",
-    color: "#DADBE1",
-    cursor: "default",
-    fontFamily: "inherit",
-    textOverflow: "ellipsis",
-    padding: `${SPACING_UNIT}px`,
-    ":focus": {
-      cursor: "text",
-    },
-  },
-  variants: {
-    readOnly: {
-      true: {
-        textOverflow: "inherit",
-      },
-    },
-  },
-});
-
-export const togglePasswordButton = style({
-  cursor: "pointer",
-  color: vars.color.muted,
-  padding: `${SPACING_UNIT}px`,
-});
-
-export const textFieldWrapper = style({
-  display: "flex",
-  gap: `${SPACING_UNIT}px`,
-});
-
-export const errorLabel = style({
-  color: vars.color.danger,
-});
diff --git a/src/renderer/src/components/text-field/text-field.scss b/src/renderer/src/components/text-field/text-field.scss
new file mode 100644
index 00000000..c84e8eab
--- /dev/null
+++ b/src/renderer/src/components/text-field/text-field.scss
@@ -0,0 +1,75 @@
+@use "../../scss/globals.scss";
+
+.text-field-container {
+  flex: 1;
+  gap: globals.$spacing-unit;
+  display: flex;
+  flex-direction: column;
+
+  &__text-field {
+    display: inline-flex;
+    transition: all ease 0.2s;
+    width: 100%;
+    align-items: center;
+    border-radius: 8px;
+    border: solid 1px globals.$border-color;
+    height: 40px;
+    min-height: 40px;
+
+    &:hover {
+      border-color: rgba(255, 255, 255, 0.5);
+    }
+
+    &--primary {
+      background-color: globals.$dark-background-color;
+    }
+
+    &--dark {
+      background-color: globals.$background-color;
+    }
+
+    &--has-error {
+      border-color: globals.$danger-color;
+    }
+
+    &--focused {
+      border-color: #dadbe1;
+    }
+  }
+
+  &__text-field-input {
+    background-color: transparent;
+    border: none;
+    width: 100%;
+    height: 100%;
+    outline: none;
+    color: #dadbe1;
+    cursor: default;
+    font-family: inherit;
+    text-overflow: ellipsis;
+    padding: globals.$spacing-unit;
+
+    &:focus {
+      cursor: text;
+    }
+
+    &--read-only {
+      text-overflow: inherit;
+    }
+  }
+
+  &__toggle-password-button {
+    cursor: pointer;
+    color: globals.$muted-color;
+    padding: globals.$spacing-unit;
+  }
+
+  &__text-field-wrapper {
+    display: flex;
+    gap: globals.$spacing-unit;
+  }
+
+  &__error-label {
+    color: globals.$danger-color;
+  }
+}
diff --git a/src/renderer/src/components/text-field/text-field.tsx b/src/renderer/src/components/text-field/text-field.tsx
index d4dfa007..264ea2ca 100644
--- a/src/renderer/src/components/text-field/text-field.tsx
+++ b/src/renderer/src/components/text-field/text-field.tsx
@@ -1,17 +1,18 @@
 import React, { useId, useMemo, useState } from "react";
-import type { RecipeVariants } from "@vanilla-extract/recipes";
 import type { FieldError, FieldErrorsImpl, Merge } from "react-hook-form";
 import { EyeClosedIcon, EyeIcon } from "@primer/octicons-react";
 import { useTranslation } from "react-i18next";
 
-import * as styles from "./text-field.css";
+import cn from "classnames";
+
+import "./text-field.scss";
 
 export interface TextFieldProps
   extends React.DetailedHTMLProps<
     React.InputHTMLAttributes<HTMLInputElement>,
     HTMLInputElement
   > {
-  theme?: NonNullable<RecipeVariants<typeof styles.textField>>["theme"];
+  theme?: "primary" | "dark";
   label?: string | React.ReactNode;
   hint?: string | React.ReactNode;
   textFieldProps?: React.DetailedHTMLProps<
@@ -57,7 +58,9 @@ export const TextField = React.forwardRef<HTMLInputElement, TextFieldProps>(
     const hintContent = useMemo(() => {
       if (error && error.message)
         return (
-          <small className={styles.errorLabel}>{error.message as string}</small>
+          <small className="text-field-container__error-label">
+            {error.message as string}
+          </small>
         );
 
       if (hint) return <small>{hint}</small>;
@@ -77,22 +80,28 @@ export const TextField = React.forwardRef<HTMLInputElement, TextFieldProps>(
     const hasError = !!error;
 
     return (
-      <div className={styles.textFieldContainer} {...containerProps}>
+      <div className="text-field-container" {...containerProps}>
         {label && <label htmlFor={id}>{label}</label>}
 
-        <div className={styles.textFieldWrapper}>
+        <div className="text-field-container__text-field-wrapper">
           <div
-            className={styles.textField({
-              theme,
-              hasError,
-              focused: isFocused,
-            })}
+            className={cn(
+              "text-field-container__text-field",
+              `text-field-container__text-field--${theme}`,
+              {
+                "text-field-container__text-field--has-error": hasError,
+                "text-field-container__text-field--focused": isFocused,
+              }
+            )}
             {...textFieldProps}
           >
             <input
               ref={ref}
               id={id}
-              className={styles.textFieldInput({ readOnly: props.readOnly })}
+              className={cn("text-field-container__text-field-input", {
+                "text-field-container__text-field-input--read-only":
+                  props.readOnly,
+              })}
               {...props}
               onFocus={handleFocus}
               onBlur={handleBlur}
@@ -102,7 +111,7 @@ export const TextField = React.forwardRef<HTMLInputElement, TextFieldProps>(
             {showPasswordToggleButton && (
               <button
                 type="button"
-                className={styles.togglePasswordButton}
+                className="text-field-container__toggle-password-button"
                 onClick={() => setIsPasswordVisible(!isPasswordVisible)}
                 aria-label={t("toggle_password_visibility")}
               >
diff --git a/src/renderer/src/components/toast/toast.css.ts b/src/renderer/src/components/toast/toast.css.ts
deleted file mode 100644
index a07bb105..00000000
--- a/src/renderer/src/components/toast/toast.css.ts
+++ /dev/null
@@ -1,87 +0,0 @@
-import { keyframes, style } from "@vanilla-extract/css";
-
-import { SPACING_UNIT, vars } from "../../theme.css";
-import { recipe } from "@vanilla-extract/recipes";
-
-const TOAST_HEIGHT = 80;
-
-export const slideIn = keyframes({
-  "0%": { transform: `translateY(${TOAST_HEIGHT + SPACING_UNIT * 2}px)` },
-  "100%": { transform: "translateY(0)" },
-});
-
-export const slideOut = keyframes({
-  "0%": { transform: `translateY(0)` },
-  "100%": { transform: `translateY(${TOAST_HEIGHT + SPACING_UNIT * 2}px)` },
-});
-
-export const toast = recipe({
-  base: {
-    animationDuration: "0.2s",
-    animationTimingFunction: "ease-in-out",
-    maxHeight: TOAST_HEIGHT,
-    position: "fixed",
-    backgroundColor: vars.color.background,
-    borderRadius: "4px",
-    border: `solid 1px ${vars.color.border}`,
-    right: `${SPACING_UNIT * 2}px`,
-    /* Bottom panel height + 16px */
-    bottom: `${26 + SPACING_UNIT * 2}px`,
-    overflow: "hidden",
-    display: "flex",
-    flexDirection: "column",
-    justifyContent: "space-between",
-    zIndex: vars.zIndex.toast,
-    maxWidth: "500px",
-  },
-  variants: {
-    closing: {
-      true: {
-        animationName: slideOut,
-        transform: `translateY(${TOAST_HEIGHT + SPACING_UNIT * 2}px)`,
-      },
-      false: {
-        animationName: slideIn,
-        transform: `translateY(0)`,
-      },
-    },
-  },
-});
-
-export const toastContent = style({
-  display: "flex",
-  gap: `${SPACING_UNIT * 2}px`,
-  padding: `${SPACING_UNIT * 2}px ${SPACING_UNIT * 2}px`,
-  justifyContent: "center",
-  alignItems: "center",
-});
-
-export const progress = style({
-  width: "100%",
-  height: "5px",
-  "::-webkit-progress-bar": {
-    backgroundColor: vars.color.darkBackground,
-  },
-  "::-webkit-progress-value": {
-    backgroundColor: vars.color.muted,
-  },
-});
-
-export const closeButton = style({
-  color: vars.color.body,
-  cursor: "pointer",
-  padding: "0",
-  margin: "0",
-});
-
-export const successIcon = style({
-  color: vars.color.success,
-});
-
-export const errorIcon = style({
-  color: vars.color.danger,
-});
-
-export const warningIcon = style({
-  color: vars.color.warning,
-});
diff --git a/src/renderer/src/components/toast/toast.scss b/src/renderer/src/components/toast/toast.scss
new file mode 100644
index 00000000..f7396779
--- /dev/null
+++ b/src/renderer/src/components/toast/toast.scss
@@ -0,0 +1,87 @@
+@use "../../scss/globals.scss";
+
+$toast-height: 80;
+
+.toast {
+  animation-duration: 0.2s;
+  animation-timing-function: ease-in-out;
+  max-height: $toast-height;
+  position: fixed;
+  background-color: globals.$background-color;
+  border-radius: 4px;
+  border: solid 1px globals.$border-color;
+  right: calc(globals.$spacing-unit * 2);
+  //bottom panel height + 16px
+  bottom: calc(26 + #{globals.$spacing-unit * 2});
+  overflow: hidden;
+  display: flex;
+  flex-direction: column;
+  justify-content: space-between;
+  z-index: globals.$toast-z-index;
+  max-width: 500px;
+  animation-name: slide-in;
+  transform: translateY(0);
+
+  &--closing {
+    animation-name: slide-out;
+    transform: translateY(calc($toast-height #{globals.$spacing-unit * 2}));
+  }
+
+  &__content {
+    display: flex;
+    gap: calc(globals.$spacing-unit * 2);
+    padding: calc(globals.$spacing-unit * 2) calc(globals.$spacing-unit * 2);
+    justify-content: center;
+    align-items: center;
+  }
+
+  &__progress {
+    width: 100%;
+    height: 5px;
+    ::-webkit-progress-bar {
+      background-color: globals.$dark-background-color;
+    }
+    ::-webkit-progress-value {
+      background-color: globals.$muted-color;
+    }
+  }
+
+  &__close-button {
+    color: globals.$body-color;
+    cursor: pointer;
+    padding: 0;
+    margin: 0;
+  }
+
+  &__success-icon {
+    color: globals.$success-color;
+  }
+
+  &__error-icon {
+    color: globals.$danger-color;
+  }
+
+  &__warning-icon {
+    color: globals.$warning-color;
+  }
+}
+
+@keyframes slide-in {
+  0% {
+    transform: translateY(calc($toast-height #{globals.$spacing-unit * 2}));
+  }
+
+  100% {
+    transform: translateY(0);
+  }
+}
+
+@keyframes slide-in {
+  0% {
+    transform: translateY(0);
+  }
+
+  100% {
+    transform: translateY(calc($toast-height #{globals.$spacing-unit * 2}));
+  }
+}
diff --git a/src/renderer/src/components/toast/toast.tsx b/src/renderer/src/components/toast/toast.tsx
index 2aa57539..3f8acfd9 100644
--- a/src/renderer/src/components/toast/toast.tsx
+++ b/src/renderer/src/components/toast/toast.tsx
@@ -6,8 +6,9 @@ import {
   XIcon,
 } from "@primer/octicons-react";
 
-import * as styles from "./toast.css";
+import "./toast.scss";
 import { SPACING_UNIT } from "@renderer/theme.css";
+import cn from "classnames";
 
 export interface ToastProps {
   visible: boolean;
@@ -77,22 +78,28 @@ export function Toast({ visible, message, type, onClose }: ToastProps) {
   if (!visible) return null;
 
   return (
-    <div className={styles.toast({ closing: isClosing })}>
-      <div className={styles.toastContent}>
+    <div
+      className={cn("toast", {
+        "toast--closing": isClosing,
+      })}
+    >
+      <div className="toast__content">
         <div style={{ display: "flex", gap: `${SPACING_UNIT}px` }}>
           {type === "success" && (
-            <CheckCircleFillIcon className={styles.successIcon} />
+            <CheckCircleFillIcon className="toast__success-icon" />
           )}
 
-          {type === "error" && <XCircleFillIcon className={styles.errorIcon} />}
+          {type === "error" && (
+            <XCircleFillIcon className="toast__error-icon" />
+          )}
 
-          {type === "warning" && <AlertIcon className={styles.warningIcon} />}
+          {type === "warning" && <AlertIcon className="toast__warning-icon" />}
           <span style={{ fontWeight: "bold" }}>{message}</span>
         </div>
 
         <button
           type="button"
-          className={styles.closeButton}
+          className="toast__close-button"
           onClick={startAnimateClosing}
           aria-label="Close toast"
         >
@@ -100,7 +107,7 @@ export function Toast({ visible, message, type, onClose }: ToastProps) {
         </button>
       </div>
 
-      <progress className={styles.progress} value={progress} max={100} />
+      <progress className="toast__progress" value={progress} max={100} />
     </div>
   );
 }
diff --git a/src/renderer/src/pages/profile/profile-content/profile-content.css.ts b/src/renderer/src/pages/profile/profile-content/profile-content.css.ts
index 00fe97e3..5ce0c8a8 100644
--- a/src/renderer/src/pages/profile/profile-content/profile-content.css.ts
+++ b/src/renderer/src/pages/profile/profile-content/profile-content.css.ts
@@ -1,4 +1,3 @@
-import { appContainer } from "../../../app.css";
 import { vars, SPACING_UNIT } from "../../../theme.css";
 import { globalStyle, style } from "@vanilla-extract/css";
 
@@ -113,19 +112,19 @@ export const gamesGrid = style({
   gap: `${SPACING_UNIT * 2}px`,
   gridTemplateColumns: "repeat(2, 1fr)",
   "@container": {
-    [`${appContainer}  (min-width: 900px)`]: {
+    [`app-container (min-width: 900px)`]: {
       gridTemplateColumns: "repeat(4, 1fr)",
     },
-    [`${appContainer}  (min-width: 1300px)`]: {
+    [`app-container (min-width: 1300px)`]: {
       gridTemplateColumns: "repeat(5, 1fr)",
     },
-    [`${appContainer}  (min-width: 2000px)`]: {
+    [`app-container (min-width: 2000px)`]: {
       gridTemplateColumns: "repeat(6, 1fr)",
     },
-    [`${appContainer}  (min-width: 2600px)`]: {
+    [`app-container (min-width: 2600px)`]: {
       gridTemplateColumns: "repeat(8, 1fr)",
     },
-    [`${appContainer}  (min-width: 3000px)`]: {
+    [`app-container (min-width: 3000px)`]: {
       gridTemplateColumns: "repeat(12, 1fr)",
     },
   },
diff --git a/src/renderer/src/scss/globals.scss b/src/renderer/src/scss/globals.scss
index 66478981..a50480fb 100644
--- a/src/renderer/src/scss/globals.scss
+++ b/src/renderer/src/scss/globals.scss
@@ -19,3 +19,8 @@ $bottom-panel-z-index: 3;
 $title-bar-z-index: 4;
 $backdrop-z-index: 4;
 $modal-z-index: 5;
+
+$body-font-size: 14px;
+$small-font-size: 12px;
+
+$app-container: app-container;