diff --git a/src/app/auth/components/__tests__/tailwind-components.test.tsx b/src/app/auth/components/__tests__/tailwind-components.test.tsx
index 372b41f2..fd795f23 100644
--- a/src/app/auth/components/__tests__/tailwind-components.test.tsx
+++ b/src/app/auth/components/__tests__/tailwind-components.test.tsx
@@ -2,15 +2,26 @@ import { renderToStaticMarkup } from "react-dom/server";
 import { describe, expect, it, vi } from "vitest";
 
 import { AuthBackground } from "../auth-background";
+import { AuthEmailPanel } from "../auth-email-panel";
 import { AuthErrorMessage } from "../auth-error-message";
+import { AuthFacebookPanel } from "../auth-facebook-panel";
 import { AuthLegalText } from "../auth-legal-text";
+import { AuthPrimaryButton } from "../auth-primary-button";
 import { AuthSocialButton } from "../auth-social-button";
+import { AuthSocialButtons } from "../auth-social-buttons";
 import { AuthTextField } from "../auth-text-field";
 import { EmailLoginForm } from "../email-login-form";
 import { EmailRegisterForm } from "../email-register-form";
 
 vi.mock("@/stores/auth/auth-context", () => ({
   useAuthDispatch: () => vi.fn(),
+  useAuthState: () => ({
+    authPanelMode: "facebook",
+    isLoading: false,
+    errorMessage: null,
+    loginStatus: "notLoggedIn",
+    hasInitialized: true,
+  }),
 }));
 
 describe("auth Tailwind components", () => {
@@ -23,6 +34,17 @@ describe("auth Tailwind components", () => {
     expect(html).toContain("Invalid email");
   });
 
+  it("renders AuthPrimaryButton with Tailwind gradient and spinner", () => {
+    const html = renderToStaticMarkup(
+      <AuthPrimaryButton isLoading>Continue</AuthPrimaryButton>,
+    );
+
+    expect(html).toContain("min-h-[var(--auth-field-height)]");
+    expect(html).toContain("bg-[linear-gradient");
+    expect(html).toContain("animate-spin");
+    expect(html).toContain("Continue");
+  });
+
   it("renders EmailLoginForm with Tailwind form layout", () => {
     const html = renderToStaticMarkup(<EmailLoginForm />);
 
@@ -64,6 +86,24 @@ describe("auth Tailwind components", () => {
     expect(html).toContain("Continue");
   });
 
+  it("renders AuthSocialButtons with provider-specific Tailwind styles", () => {
+    const html = renderToStaticMarkup(
+      <AuthSocialButtons
+        onFacebook={() => {}}
+        onGoogle={() => {}}
+        onApple={() => {}}
+        showApple
+      />,
+    );
+
+    expect(html).toContain("bg-facebook-blue");
+    expect(html).toContain("bg-white");
+    expect(html).toContain("bg-black");
+    expect(html).toContain("Continue with Facebook");
+    expect(html).toContain("Continue with Google");
+    expect(html).toContain("Continue with Apple");
+  });
+
   it("renders AuthLegalText with Tailwind checkbox and links", () => {
     const html = renderToStaticMarkup(<AuthLegalText />);
 
@@ -90,4 +130,25 @@ describe("auth Tailwind components", () => {
     expect(html).toContain("text-auth-text-primary");
     expect(html).toContain("Invalid email");
   });
+
+  it("renders AuthEmailPanel with Tailwind panel layout", () => {
+    const html = renderToStaticMarkup(
+      <AuthEmailPanel onSwitchToFacebook={() => {}} />,
+    );
+
+    expect(html).toContain("flex min-h-0 w-full flex-auto flex-col");
+    expect(html).toContain("h-xxl");
+    expect(html).toContain("Other Sign In Options");
+  });
+
+  it("renders AuthFacebookPanel with Tailwind Facebook button", () => {
+    const html = renderToStaticMarkup(
+      <AuthFacebookPanel onSwitchToEmail={() => {}} />,
+    );
+
+    expect(html).toContain("Login with Facebook");
+    expect(html).toContain("bg-auth-surface");
+    expect(html).toContain("enabled:hover:brightness-[0.97]");
+    expect(html).toContain("Other Sign In Options");
+  });
 });
diff --git a/src/app/auth/components/auth-email-panel.module.css b/src/app/auth/components/auth-email-panel.module.css
deleted file mode 100644
index 103a6099..00000000
--- a/src/app/auth/components/auth-email-panel.module.css
+++ /dev/null
@@ -1,75 +0,0 @@
-/* 
- *
- * 视觉规格（与 Dart 对齐）：
- *   - 顶部：login 模式有 logo + 24px spacer；register 模式两个 24px spacer
- *   - 表单 + 12px gap + 切换链接 + 16px gap + 弹层链接
- *   - Spacer + 法律
- *   - 切换链接：14px 黑色下划线居中
- *   - "Other Sign In Options" 链接：14px 黑色下划线居中
- */
-.panel {
-  display: flex;
-  flex-direction: column;
-  align-items: stretch;
-  flex: 1 1 auto;
-  width: 100%;
-  min-height: 0;
-}
-
-.topSection {
-  display: flex;
-  flex-direction: column;
-  align-items: stretch;
-}
-
-.spacer24 {
-  height: var(--spacing-xxl);
-}
-
-.logo {
-  display: block;
-  height: clamp(92px, 22.222vw, var(--auth-logo-height));
-  width: auto;
-  max-width: min(56vw, 220px);
-  margin: 0 auto;
-  object-fit: contain;
-}
-
-.spacer {
-  flex: 1 1 0;
-  min-height: var(--page-section-gap, var(--spacing-lg));
-}
-
-.toggleButton {
-  align-self: center;
-  background: none;
-  border: none;
-  padding: var(--spacing-md) 0 0;
-  font-size: var(--responsive-body, var(--font-size-md));
-  color: var(--color-auth-text-primary);
-  text-decoration: underline;
-  text-underline-offset: 3px;
-  cursor: pointer;
-  transition: opacity 0.15s ease;
-}
-
-.toggleButton:hover {
-  opacity: 0.8;
-}
-
-.linkButton {
-  align-self: center;
-  background: none;
-  border: none;
-  padding: var(--spacing-md) 0 var(--spacing-md);
-  font-size: var(--responsive-body, var(--font-size-md));
-  color: var(--color-auth-text-primary);
-  text-decoration: underline;
-  text-underline-offset: 3px;
-  cursor: pointer;
-  transition: opacity 0.15s ease;
-}
-
-.linkButton:hover {
-  opacity: 0.8;
-}
diff --git a/src/app/auth/components/auth-email-panel.tsx b/src/app/auth/components/auth-email-panel.tsx
index 7142908f..43ca9e22 100644
--- a/src/app/auth/components/auth-email-panel.tsx
+++ b/src/app/auth/components/auth-email-panel.tsx
@@ -23,7 +23,6 @@ import { AuthLegalText } from "./auth-legal-text";
 import { AuthOtherOptionsDialog } from "./auth-other-options-dialog";
 import { EmailLoginForm } from "./email-login-form";
 import { EmailRegisterForm } from "./email-register-form";
-import styles from "./auth-email-panel.module.css";
 
 export interface AuthEmailPanelProps {
   /** "Other Sign-in Options" 弹层中 Facebook 按钮回调（派发回 facebook 模式） */
@@ -44,28 +43,28 @@ export function AuthEmailPanel({
   const [showOptions, setShowOptions] = useState(false);
 
   return (
-    <div className={styles.panel}>
-      <div className={styles.topSection}>
+    <div className="flex min-h-0 w-full flex-auto flex-col items-stretch">
+      <div className="flex flex-col items-stretch">
         {mode === "login" ? (
           <>
-            <div className={styles.spacer24} />
+            <div className="h-xxl" />
             <Image
               src="/images/auth/ic-logo-login.png"
               alt="Cozsweet"
               width={120}
               height={120}
-              className={styles.logo}
+              className="mx-auto block h-[clamp(92px,22.222vw,var(--auth-logo-height))] max-w-[min(56vw,220px)] object-contain"
               style={{ width: "auto", height: "auto" }}
               priority
             />
           </>
         ) : (
           <>
-            <div className={styles.spacer24} />
-            <div className={styles.spacer24} />
+            <div className="h-xxl" />
+            <div className="h-xxl" />
           </>
         )}
-        <div className={styles.spacer24} />
+        <div className="h-xxl" />
       </div>
 
       {mode === "login" ? (
@@ -84,7 +83,7 @@ export function AuthEmailPanel({
 
       <button
         type="button"
-        className={styles.toggleButton}
+        className="self-center border-0 bg-transparent pt-md text-[var(--responsive-body)] text-auth-text-primary underline underline-offset-[3px] transition-opacity duration-150 hover:opacity-80"
         onClick={() => setMode((m) => (m === "login" ? "register" : "login"))}
       >
         {mode === "login"
@@ -94,13 +93,13 @@ export function AuthEmailPanel({
 
       <button
         type="button"
-        className={styles.linkButton}
+        className="self-center border-0 bg-transparent py-md text-[var(--responsive-body)] text-auth-text-primary underline underline-offset-[3px] transition-opacity duration-150 hover:opacity-80"
         onClick={() => setShowOptions(true)}
       >
         Other Sign In Options
       </button>
 
-      <div className={styles.spacer} />
+      <div className="min-h-[var(--page-section-gap,var(--spacing-lg))] flex-[1_1_0]" />
       <AuthLegalText />
 
       <AuthOtherOptionsDialog
diff --git a/src/app/auth/components/auth-facebook-panel.module.css b/src/app/auth/components/auth-facebook-panel.module.css
deleted file mode 100644
index 7ef0b0fd..00000000
--- a/src/app/auth/components/auth-facebook-panel.module.css
+++ /dev/null
@@ -1,111 +0,0 @@
-/* 
- *
- * 视觉规格（与 Dart 对齐）：
- *   - Spacer → logo（120h）→ Spacer → Facebook 主按钮 → 链接 → Spacer → 法律
- *   - Facebook 主按钮：46px 白胶囊 + Facebook "f" 图标（#1877f2）
- *   - 链接：14px 黑色下划线居中
- */
-.panel {
-  display: flex;
-  flex-direction: column;
-  align-items: stretch;
-  flex: 1 1 auto;
-  width: 100%;
-  min-height: 0;
-}
-
-.spacer {
-  flex: 1 1 0;
-  min-height: var(--page-section-gap, var(--spacing-lg));
-}
-
-.logo {
-  display: block;
-  height: clamp(92px, 22.222vw, var(--auth-logo-height));
-  width: auto;
-  max-width: min(56vw, 220px);
-  margin: 0 auto;
-  object-fit: contain;
-}
-
-.facebookButton {
-  display: inline-flex;
-  align-items: center;
-  justify-content: center;
-  gap: var(--spacing-md);
-  width: 100%;
-  min-height: var(--auth-field-height);
-  padding: 0 var(--spacing-lg);
-  border: none;
-  border-radius: var(--radius-full, 999px);
-  background: var(--color-auth-surface);
-  color: var(--color-auth-text-primary);
-  font-size: var(--responsive-body, var(--font-size-md));
-  font-weight: 600;
-  cursor: pointer;
-  margin-top: var(--spacing-md);
-  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
-  transition: filter 0.15s ease, transform 0.05s ease, opacity 0.15s ease;
-}
-
-.facebookButton:hover:not(:disabled) {
-  filter: brightness(0.97);
-}
-
-.facebookButton:disabled {
-  opacity: 0.6;
-  cursor: not-allowed;
-}
-
-.facebookButton:not(:disabled):active {
-  transform: scale(0.98);
-}
-
-.facebookIcon {
-  display: inline-flex;
-  align-items: center;
-  justify-content: center;
-  width: 20px;
-  height: 20px;
-  flex: 0 0 auto;
-}
-
-.facebookLabel {
-  flex: 0 0 auto;
-  text-align: center;
-}
-
-.spinner {
-  display: inline-block;
-  width: var(--responsive-spinner-size, 18px);
-  height: var(--responsive-spinner-size, 18px);
-  border-width: 2px;
-  border-style: solid;
-  border-color: var(--color-facebook-blue) transparent transparent transparent;
-  border-radius: 50%;
-  animation: spin 0.8s linear infinite;
-  flex: 0 0 auto;
-}
-
-.linkButton {
-  align-self: center;
-  background: none;
-  border: none;
-  padding: var(--spacing-md) 0;
-  font-size: var(--responsive-body, var(--font-size-md));
-  color: var(--color-auth-text-primary);
-  text-decoration: underline;
-  text-underline-offset: 3px;
-  cursor: pointer;
-  transition: opacity 0.15s ease;
-}
-
-.linkButton:hover {
-  opacity: 0.8;
-}
-
-@keyframes spin {
-  to {
-    transform: rotate(360deg);
-  }
-}
diff --git a/src/app/auth/components/auth-facebook-panel.tsx b/src/app/auth/components/auth-facebook-panel.tsx
index 2c0b7a2d..a6bba2aa 100644
--- a/src/app/auth/components/auth-facebook-panel.tsx
+++ b/src/app/auth/components/auth-facebook-panel.tsx
@@ -21,7 +21,6 @@ import { AuthErrorMessage } from "./auth-error-message";
 import { AuthLegalText } from "./auth-legal-text";
 import { AuthOtherOptionsDialog } from "./auth-other-options-dialog";
 import { AuthProviderIcon } from "./auth-provider-icon";
-import styles from "./auth-facebook-panel.module.css";
 
 export interface AuthFacebookPanelProps {
   onSwitchToEmail: () => void;
@@ -49,46 +48,52 @@ export function AuthFacebookPanel({
   };
 
   return (
-    <div className={styles.panel}>
-      <div className={styles.spacer} />
+    <div className="flex min-h-0 w-full flex-auto flex-col items-stretch">
+      <div className="min-h-[var(--page-section-gap,var(--spacing-lg))] flex-[1_1_0]" />
       <Image
         src="/images/auth/ic-logo-login.png"
         alt="Cozsweet"
         width={120}
         height={120}
-        className={styles.logo}
+        className="mx-auto block h-[clamp(92px,22.222vw,var(--auth-logo-height))] max-w-[min(56vw,220px)] object-contain"
         style={{ width: "auto", height: "auto" }}
         priority
       />
-      <div className={styles.spacer} />
+      <div className="min-h-[var(--page-section-gap,var(--spacing-lg))] flex-[1_1_0]" />
 
       <button
         type="button"
-        className={styles.facebookButton}
+        className="mt-md inline-flex min-h-[var(--auth-field-height)] w-full cursor-pointer items-center justify-center gap-md rounded-full border-0 bg-auth-surface px-lg text-[var(--responsive-body)] font-semibold text-auth-text-primary shadow-[0_2px_6px_rgba(0,0,0,0.06)] transition-[filter,transform,opacity] duration-150 enabled:hover:brightness-[0.97] enabled:active:scale-[0.98] disabled:cursor-not-allowed disabled:opacity-60"
         onClick={() => handleFacebook()}
         disabled={isLoading}
       >
         {isLoading ? (
-          <span className={styles.spinner} aria-hidden="true" />
+          <span
+            className="inline-block size-[var(--responsive-spinner-size,18px)] flex-none animate-spin rounded-full border-2 border-solid border-facebook-blue border-r-transparent border-b-transparent border-l-transparent"
+            aria-hidden="true"
+          />
         ) : (
-          <span className={styles.facebookIcon} aria-hidden="true">
+          <span
+            className="inline-flex size-5 flex-none items-center justify-center"
+            aria-hidden="true"
+          >
             <AuthProviderIcon provider="facebook" />
           </span>
         )}
-        <span className={styles.facebookLabel}>
+        <span className="flex-none text-center">
           {isLoading ? "Logging in..." : "Login with Facebook"}
         </span>
       </button>
 
       <button
         type="button"
-        className={styles.linkButton}
+        className="self-center border-0 bg-transparent py-md text-[var(--responsive-body)] text-auth-text-primary underline underline-offset-[3px] transition-opacity duration-150 hover:opacity-80"
         onClick={() => setShowOptions(true)}
       >
         Other Sign In Options
       </button>
 
-      <div className={styles.spacer} />
+      <div className="min-h-[var(--page-section-gap,var(--spacing-lg))] flex-[1_1_0]" />
 
       <AuthErrorMessage message={errorMessage} />
       <AuthLegalText />
diff --git a/src/app/auth/components/auth-other-options-dialog.module.css b/src/app/auth/components/auth-other-options-dialog.module.css
deleted file mode 100644
index 9a8524e2..00000000
--- a/src/app/auth/components/auth-other-options-dialog.module.css
+++ /dev/null
@@ -1,53 +0,0 @@
-/* 
- *
- * 视觉规格（与 Dart 对齐）：
- *   - drag handle 40×4 灰胶囊
- *   - 标题 24px bold 深色居中
- *   - 选项按钮 40px 白胶囊
- *   - Cancel 14px 深色居中文本按钮
- */
-.body {
-  display: flex;
-  flex-direction: column;
-  align-items: stretch;
-  gap: var(--spacing-md);
-  padding: var(--spacing-md) var(--spacing-xxl)
-    calc(var(--spacing-xxl) + var(--app-safe-bottom, 0px));
-}
-
-.handle {
-  align-self: center;
-  width: var(--auth-drag-handle-width);
-  height: var(--auth-drag-handle-height);
-  border-radius: 2px;
-  background: var(--color-auth-drag-handle);
-  margin-bottom: var(--spacing-sm);
-}
-
-.title {
-  margin: var(--spacing-sm) 0;
-  font-size: var(--responsive-page-title, var(--font-size-bottom-sheet-title));
-  font-weight: 700;
-  color: var(--color-auth-text-primary);
-  text-align: center;
-}
-
-.googleSlot {
-  width: 100%;
-}
-
-.cancel {
-  align-self: center;
-  background: none;
-  border: none;
-  padding: var(--spacing-md) 0;
-  color: var(--color-auth-text-primary);
-  font-size: var(--responsive-body, var(--font-size-md));
-  font-weight: 500;
-  cursor: pointer;
-  text-decoration: none;
-}
-
-.cancel:hover {
-  text-decoration: underline;
-}
diff --git a/src/app/auth/components/auth-other-options-dialog.tsx b/src/app/auth/components/auth-other-options-dialog.tsx
index 9e911936..b3e5a460 100644
--- a/src/app/auth/components/auth-other-options-dialog.tsx
+++ b/src/app/auth/components/auth-other-options-dialog.tsx
@@ -7,7 +7,6 @@ import { AppEnvUtil } from "@/utils";
 
 import { AuthProviderIcon } from "./auth-provider-icon";
 import { AuthSocialButton } from "./auth-social-button";
-import styles from "./auth-other-options-dialog.module.css";
 
 export interface AuthOtherOptionsDialogProps {
   open: boolean;
@@ -39,9 +38,17 @@ export function AuthOtherOptionsDialog({
       onClose={onClose}
       ariaLabel="Other sign-in options"
     >
-      <div className={styles.body}>
-        <div className={styles.handle} aria-hidden="true" />
-        <h2 className={styles.title}>Other Sign-in Options</h2>
+      <div
+        className="flex flex-col items-stretch gap-md px-xxl pt-md"
+        style={{ paddingBottom: "calc(var(--spacing-xxl) + var(--app-safe-bottom, 0px))" }}
+      >
+        <div
+          className="mb-sm h-[var(--auth-drag-handle-height)] w-[var(--auth-drag-handle-width)] self-center rounded-[2px] bg-auth-drag-handle"
+          aria-hidden="true"
+        />
+        <h2 className="my-sm text-center text-[var(--responsive-page-title)] font-bold text-auth-text-primary">
+          Other Sign-in Options
+        </h2>
 
         {mode === "email" ? (
           <AuthSocialButton
@@ -68,7 +75,7 @@ export function AuthOtherOptionsDialog({
         ) : null}
 
         {googleSlot ? (
-          <div className={styles.googleSlot}>{googleSlot}</div>
+          <div className="w-full">{googleSlot}</div>
         ) : (
           <AuthSocialButton
             icon={<AuthProviderIcon provider="google" />}
@@ -81,7 +88,11 @@ export function AuthOtherOptionsDialog({
           </AuthSocialButton>
         )}
 
-        <button type="button" className={styles.cancel} onClick={onClose}>
+        <button
+          type="button"
+          className="self-center border-0 bg-transparent py-md text-[var(--responsive-body)] font-medium text-auth-text-primary no-underline hover:underline"
+          onClick={onClose}
+        >
           Cancel
         </button>
       </div>
diff --git a/src/app/auth/components/auth-primary-button.module.css b/src/app/auth/components/auth-primary-button.module.css
deleted file mode 100644
index b4bbf03a..00000000
--- a/src/app/auth/components/auth-primary-button.module.css
+++ /dev/null
@@ -1,62 +0,0 @@
-/* 
- *
- * 视觉规格（与 Dart 对齐）：
- *   - 46px 高
- *   - 粉渐变（#f96ADE → #f657A0，左→右）
- *   - 半径 24
- *   - 20% 红阴影（#d00c41 @ 20%）
- *   - 文字 16px bold 白色
- */
-.button {
-  display: inline-flex;
-  align-items: center;
-  justify-content: center;
-  gap: var(--spacing-sm);
-  width: 100%;
-  min-height: var(--auth-field-height);
-  padding: 0 var(--spacing-lg);
-  border: none;
-  border-radius: var(--radius-full, 999px);
-  background: linear-gradient(
-    90deg,
-    var(--color-auth-primary-gradient-start),
-    var(--color-auth-primary-gradient-end)
-  );
-  box-shadow: 0 3px 5px var(--color-auth-primary-button-shadow);
-  color: #ffffff;
-  font-size: var(--responsive-body, var(--font-size-lg));
-  font-weight: 700;
-  cursor: pointer;
-  transition: filter 0.15s ease, transform 0.05s ease, opacity 0.15s ease;
-}
-
-.button:disabled {
-  opacity: 0.7;
-  cursor: not-allowed;
-}
-
-.button:not(:disabled):active {
-  transform: scale(0.98);
-}
-
-.label {
-  flex: 1 1 auto;
-  text-align: center;
-}
-
-.spinner {
-  display: inline-block;
-  width: var(--responsive-spinner-size, 18px);
-  height: var(--responsive-spinner-size, 18px);
-  border-width: 2px;
-  border-style: solid;
-  border-color: #ffffff transparent transparent transparent;
-  border-radius: 50%;
-  animation: spin 0.8s linear infinite;
-}
-
-@keyframes spin {
-  to {
-    transform: rotate(360deg);
-  }
-}
diff --git a/src/app/auth/components/auth-primary-button.tsx b/src/app/auth/components/auth-primary-button.tsx
index 363dcd58..290ab4ed 100644
--- a/src/app/auth/components/auth-primary-button.tsx
+++ b/src/app/auth/components/auth-primary-button.tsx
@@ -13,8 +13,6 @@
  */
 import { type ButtonHTMLAttributes, type ReactNode } from "react";
 
-import styles from "./auth-primary-button.module.css";
-
 export interface AuthPrimaryButtonProps
   extends Omit<ButtonHTMLAttributes<HTMLButtonElement>, "children"> {
   isLoading?: boolean;
@@ -33,13 +31,21 @@ export function AuthPrimaryButton({
     <button
       type={type}
       disabled={disabled || isLoading}
-      className={[styles.button, className].filter(Boolean).join(" ")}
+      className={[
+        "inline-flex min-h-[var(--auth-field-height)] w-full cursor-pointer items-center justify-center gap-sm rounded-full border-0 bg-[linear-gradient(90deg,var(--color-auth-primary-gradient-start),var(--color-auth-primary-gradient-end))] px-lg text-[var(--responsive-body)] font-bold text-white shadow-[0_3px_5px_var(--color-auth-primary-button-shadow)] transition-[filter,transform,opacity] duration-150 active:enabled:scale-[0.98] disabled:cursor-not-allowed disabled:opacity-70",
+        className,
+      ]
+        .filter(Boolean)
+        .join(" ")}
       {...rest}
     >
       {isLoading ? (
-        <span className={styles.spinner} aria-hidden="true" />
+        <span
+          className="inline-block size-[var(--responsive-spinner-size,18px)] animate-spin rounded-full border-2 border-solid border-white border-r-transparent border-b-transparent border-l-transparent"
+          aria-hidden="true"
+        />
       ) : null}
-      <span className={styles.label}>{children}</span>
+      <span className="flex-auto text-center">{children}</span>
     </button>
   );
 }
diff --git a/src/app/auth/components/auth-social-buttons.module.css b/src/app/auth/components/auth-social-buttons.module.css
deleted file mode 100644
index e0cce484..00000000
--- a/src/app/auth/components/auth-social-buttons.module.css
+++ /dev/null
@@ -1,65 +0,0 @@
-.list {
-  display: flex;
-  flex-direction: column;
-  gap: var(--spacing-md);
-  width: 100%;
-}
-
-.button {
-  display: inline-flex;
-  align-items: center;
-  justify-content: center;
-  gap: var(--spacing-sm);
-  width: 100%;
-  min-height: var(--button-height);
-  padding: 0 var(--spacing-lg);
-  border: var(--border-light) solid var(--color-chat-input-border);
-  border-radius: var(--radius-full);
-  background: rgba(255, 255, 255, 0.04);
-  color: var(--color-text-primary);
-  font-size: var(--responsive-body, var(--font-size-md));
-  font-weight: 500;
-  cursor: pointer;
-  transition: background 0.15s ease;
-}
-
-.button:hover:not(:disabled) {
-  background: rgba(255, 255, 255, 0.08);
-}
-
-.button:disabled {
-  opacity: 0.5;
-  cursor: not-allowed;
-}
-
-.icon {
-  display: inline-flex;
-  align-items: center;
-  justify-content: center;
-  width: 20px;
-  height: 20px;
-}
-
-.facebook {
-  background: var(--color-facebook-blue);
-  border-color: transparent;
-}
-
-.google {
-  background: #ffffff;
-  color: #1f1f1f;
-  border-color: transparent;
-}
-
-.apple {
-  background: #000000;
-  border-color: rgba(255, 255, 255, 0.2);
-  color: #ffffff;
-}
-
-.googleSlot {
-  display: flex;
-  justify-content: center;
-  width: 100%;
-  min-height: var(--button-height);
-}
diff --git a/src/app/auth/components/auth-social-buttons.tsx b/src/app/auth/components/auth-social-buttons.tsx
index 54f916cb..4cef09d0 100644
--- a/src/app/auth/components/auth-social-buttons.tsx
+++ b/src/app/auth/components/auth-social-buttons.tsx
@@ -9,7 +9,6 @@
 import { type ReactNode } from "react";
 
 import { AuthProviderIcon } from "./auth-provider-icon";
-import styles from "./auth-social-buttons.module.css";
 
 export interface AuthSocialButtonsProps {
   onFacebook: () => void;
@@ -29,30 +28,36 @@ export function AuthSocialButtons({
   showApple = false,
   googleSlot,
 }: AuthSocialButtonsProps) {
+  const buttonClassName =
+    "inline-flex min-h-[var(--button-height)] w-full cursor-pointer items-center justify-center gap-sm rounded-full border border-chat-input-border bg-[rgba(255,255,255,0.04)] px-lg text-[var(--responsive-body)] font-medium text-text-primary transition-colors duration-150 enabled:hover:bg-[rgba(255,255,255,0.08)] disabled:cursor-not-allowed disabled:opacity-50";
+  const iconClassName = "inline-flex size-5 items-center justify-center";
+
   return (
-    <div className={styles.list}>
+    <div className="flex w-full flex-col gap-md">
       <button
         type="button"
-        className={[styles.button, styles.facebook].join(" ")}
+        className={`${buttonClassName} border-transparent bg-facebook-blue`}
         onClick={onFacebook}
         disabled={loadingProvider !== null && loadingProvider !== "facebook"}
       >
-        <span className={styles.icon} aria-hidden="true">
+        <span className={iconClassName} aria-hidden="true">
           <AuthProviderIcon provider="facebook" />
         </span>
         <span>Continue with Facebook</span>
       </button>
 
       {googleSlot ? (
-        <div className={styles.googleSlot}>{googleSlot}</div>
+        <div className="flex min-h-[var(--button-height)] w-full justify-center">
+          {googleSlot}
+        </div>
       ) : (
         <button
           type="button"
-          className={[styles.button, styles.google].join(" ")}
+          className={`${buttonClassName} border-transparent bg-white text-[#1f1f1f]`}
           onClick={onGoogle}
           disabled={loadingProvider !== null && loadingProvider !== "google"}
         >
-          <span className={styles.icon} aria-hidden="true">
+          <span className={iconClassName} aria-hidden="true">
             <AuthProviderIcon provider="google" />
           </span>
           <span>Continue with Google</span>
@@ -62,11 +67,11 @@ export function AuthSocialButtons({
       {showApple && onApple ? (
         <button
           type="button"
-          className={[styles.button, styles.apple].join(" ")}
+          className={`${buttonClassName} border-[rgba(255,255,255,0.2)] bg-black text-white`}
           onClick={onApple}
           disabled={loadingProvider !== null && loadingProvider !== "apple"}
         >
-          <span className={styles.icon} aria-hidden="true">
+          <span className={iconClassName} aria-hidden="true">
             <AuthProviderIcon provider="apple" />
           </span>
           <span>Continue with Apple</span>