diff --git a/.Jules/palette.md b/.Jules/palette.md
index bdd475d..06e7a39 100644
--- a/.Jules/palette.md
+++ b/.Jules/palette.md
@@ -1 +1,5 @@
 # Palette Journal
+
+## 2024-05-22 - Password Toggles and Label Selectors
+**Learning:** When implementing "Show/Hide Password" toggles within an input field, simply adding an icon button can create ambiguity for automated testing tools if not careful. While `htmlFor`/`id` binding connects the visual label to the input correctly, the toggle button's `aria-label` (e.g., "Show password") contains the same keyword ("password") as the main label.
+**Action:** Always prefer selecting by strict label text or using specific input types (`input[type='password']`) in tests when a field has auxiliary interactive controls containing similar accessible names. Ensure the toggle button is clearly distinct from the input itself in the accessibility tree.
diff --git a/web/components/ui/Button.tsx b/web/components/ui/Button.tsx
index cfccd8e..66ea2e8 100644
--- a/web/components/ui/Button.tsx
+++ b/web/components/ui/Button.tsx
@@ -1,17 +1,21 @@
 import React from 'react';
 import { THEMES } from '../../constants';
 import { useTheme } from '../../contexts/ThemeContext';
+import { Spinner } from './Spinner';
 
 interface ButtonProps extends React.ButtonHTMLAttributes<HTMLButtonElement> {
   variant?: 'primary' | 'secondary' | 'danger' | 'ghost';
   size?: 'sm' | 'md' | 'lg';
+  isLoading?: boolean;
 }
 
 export const Button: React.FC<ButtonProps> = ({
   children,
   variant = 'primary',
   size = 'md',
+  isLoading = false,
   className = '',
+  disabled,
   ...props
 }) => {
   const { style } = useTheme();
@@ -47,8 +51,11 @@ export const Button: React.FC<ButtonProps> = ({
   return (
     <button
       className={`${baseStyles} ${sizeStyles[size]} ${themeStyles} ${className}`}
+      disabled={disabled || isLoading}
+      aria-busy={isLoading}
       {...props}
     >
+      {isLoading && <Spinner size={size === 'sm' ? 16 : 20} />}
       {children}
     </button>
   );
diff --git a/web/components/ui/Spinner.tsx b/web/components/ui/Spinner.tsx
new file mode 100644
index 0000000..dfb4e1a
--- /dev/null
+++ b/web/components/ui/Spinner.tsx
@@ -0,0 +1,23 @@
+import React from 'react';
+import { Loader2 } from 'lucide-react';
+
+interface SpinnerProps {
+  size?: number;
+  className?: string;
+  ariaLabel?: string;
+}
+
+export const Spinner: React.FC<SpinnerProps> = ({
+  size = 20,
+  className = '',
+  ariaLabel = 'Loading'
+}) => {
+  return (
+    <Loader2
+      size={size}
+      className={`animate-spin ${className}`}
+      aria-label={ariaLabel}
+      role="status"
+    />
+  );
+};
diff --git a/web/pages/Auth.tsx b/web/pages/Auth.tsx
index 180001c..99f74a5 100644
--- a/web/pages/Auth.tsx
+++ b/web/pages/Auth.tsx
@@ -214,7 +214,8 @@ export const Auth = () => {
                     exit={{ height: 0, opacity: 0 }}
                   >
                     <Input
-                      placeholder="Full Name"
+                      label="Full Name"
+                      placeholder="e.g. John Doe"
                       value={name}
                       onChange={(e) => setName(e.target.value)}
                       required
@@ -225,16 +226,18 @@ export const Auth = () => {
               </AnimatePresence>
 
               <Input
+                label="Email Address"
                 type="email"
-                placeholder="Email Address"
+                placeholder="e.g. john@example.com"
                 value={email}
                 onChange={(e) => setEmail(e.target.value)}
                 required
                 className={isNeo ? 'rounded-none' : ''}
               />
               <Input
+                label="Password"
                 type="password"
-                placeholder="Password"
+                placeholder="••••••••"
                 value={password}
                 onChange={(e) => setPassword(e.target.value)}
                 required
@@ -251,8 +254,8 @@ export const Auth = () => {
                 </motion.div>
               )}
 
-              <Button type="submit" disabled={loading} className={`w-full py-4 text-lg ${isNeo ? 'rounded-none' : ''}`}>
-                {loading ? 'Processing...' : isLogin ? 'Log In' : 'Create Account'} <ArrowRight size={20} />
+              <Button type="submit" isLoading={loading} className={`w-full py-4 text-lg ${isNeo ? 'rounded-none' : ''}`}>
+                {isLogin ? 'Log In' : 'Create Account'} {!loading && <ArrowRight size={20} />}
               </Button>
             </form>