google sign in page done

src/components/GoogleSignInButton.tsx

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+import type { ButtonHTMLAttributes } from 'react'
+
+/** Google "G" logo – standard multicolor mark */
+function GoogleLogo({ className }: { className?: string }) {
+  return (
+    <svg
+      className={className}
+      width="20"
+      height="20"
+      viewBox="0 0 24 24"
+      aria-hidden
+    >
+      <path
+        fill="#4285F4"
+        d="M22.56 12.25c0-.78-.07-1.53-.2-2.25H12v4.26h5.92c-.26 1.37-1.04 2.53-2.21 3.31v2.77h3.57c2.08-1.92 3.28-4.74 3.28-8.09z"
+      />
+      <path
+        fill="#34A853"
+        d="M12 23c2.97 0 5.46-.98 7.28-2.66l-3.57-2.77c-.98.66-2.23 1.06-3.71 1.06-2.86 0-5.29-1.93-6.16-4.53H2.18v2.84C3.99 20.53 7.7 23 12 23z"
+      />
+      <path
+        fill="#FBBC05"
+        d="M5.84 14.09c-.22-.66-.35-1.36-.35-2.09s.13-1.43.35-2.09V7.07H2.18C1.43 8.55 1 10.22 1 12s.43 3.45 1.18 4.93l2.85-2.22.81-.62z"
+      />
+      <path
+        fill="#EA4335"
+        d="M12 5.38c1.62 0 3.06.56 4.21 1.64l3.15-3.15C17.45 2.09 14.97 1 12 1 7.7 1 3.99 3.47 2.18 7.07l3.66 2.84c.87-2.6 3.3-4.53 6.16-4.53z"
+      />
+    </svg>
+  )
+}
+
+type Props = ButtonHTMLAttributes<HTMLButtonElement> & {
+  loading?: boolean
+}
+
+export function GoogleSignInButton({ loading = false, disabled, className = '', ...rest }: Props) {
+  return (
+    <button
+      type="button"
+      className={`google-sign-in-btn ${className}`.trim()}
+      disabled={disabled ?? loading}
+      aria-busy={loading}
+      aria-label={loading ? 'Signing in…' : 'Sign in with Google'}
+      {...rest}
+    >
+      <GoogleLogo className="google-sign-in-btn__logo" />
+      <span className="google-sign-in-btn__label">
+        {loading ? 'Signing in…' : 'Sign in with Google'}
+      </span>
+    </button>
+  )
+}

src/components/LoginCard.tsx

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+import type { ReactNode } from 'react'
+
+type Props = {
+  title: string
+  tagline?: string
+  children: ReactNode
+}
+
+export function LoginCard({ title, tagline, children }: Props) {
+  return (
+    <div className="login-card">
+      <div className="login-card__brand">
+        <h1 className="login-card__title">{title}</h1>
+        {tagline && <p className="login-card__tagline">{tagline}</p>}
+      </div>
+      <div className="login-card__actions">
+        {children}
+      </div>
+    </div>
+  )
+}

src/components/ProtectedRoute.tsx

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+import { useEffect, type ReactNode } from 'react'
+import { Navigate, useLocation } from 'react-router-dom'
+import { useAuth } from '../contexts/AuthContext'
+
+type Props = {
+  children: ReactNode
+}
+
+export function ProtectedRoute({ children }: Props) {
+  const { user, loading } = useAuth()
+  const location = useLocation()
+
+  if (loading) {
+    return (
+      <div className="protected-route__loading" aria-live="polite">
+        <span className="protected-route__spinner" aria-hidden />
+        <p>Loading…</p>
+      </div>
+    )
+  }
+
+  if (!user) {
+    return <Navigate to="/login" state={{ from: location }} replace />
+  }
+
+  return <>{children}</>
+}