feat: Implement 'Lock/Edit' mode with blur and confirmation dialog

src/App.tsx

@@ -17,11 +17,11 @@ import { validateBip39Mnemonic } from './lib/bip39';
 import { buildPlaintext, encryptToSeedPgp, decryptSeedPgp } from './lib/seedpgp';
 import * as openpgp from 'openpgp';
 import { SecurityWarnings } from './components/SecurityWarnings';
-import { ReadOnly } from './components/ReadOnly';
 import { getSessionKey, encryptJsonToBlob, destroySessionKey, EncryptedBlob } from './lib/sessionCrypto';
 import Header from './components/Header';
 import { StorageDetails } from './components/StorageDetails';
 import { ClipboardDetails } from './components/ClipboardDetails';
+import Footer from './components/Footer';
 
 console.log("OpenPGP.js version:", openpgp.config.versionString);
 
@@ -64,6 +64,7 @@ function App() {
   const [localItems, setLocalItems] = useState<StorageItem[]>([]);
   const [sessionItems, setSessionItems] = useState<StorageItem[]>([]);
   const [clipboardEvents, setClipboardEvents] = useState<ClipboardEvent[]>([]);
+  const [showLockConfirm, setShowLockConfirm] = useState(false);
 
   const SENSITIVE_PATTERNS = ['key', 'mnemonic', 'seed', 'private', 'secret', 'pgp', 'password'];
 
@@ -100,21 +101,7 @@ function App() {
       return () => clearInterval(interval);
   }, []);
 
-  useEffect(() => {
+
-    // When entering read-only mode, clear sensitive data for security.
-    if (isReadOnly) {
-      setMnemonic('');
-      setBackupMessagePassword('');
-      setRestoreMessagePassword('');
-      setPublicKeyInput('');
-      setPrivateKeyInput('');
-      setPrivateKeyPassphrase('');
-      setQrPayload('');
-      setRestoreInput('');
-      setDecryptedRestoredMnemonic(null);
-      setError('');
-    }
-  }, [isReadOnly]);
 
   // Cleanup session key on component unmount
   useEffect(() => {
@@ -319,6 +306,21 @@ function App() {
     setShowQRScanner(false);
   };
 
+  const handleToggleLock = () => {
+    if (!isReadOnly) {
+      // About to lock - show confirmation
+      setShowLockConfirm(true);
+    } else {
+      // Unlocking - no confirmation needed
+      setIsReadOnly(false);
+    }
+  };
+
+  const confirmLock = () => {
+    setIsReadOnly(true);
+    setShowLockConfirm(false);
+  };
+
 
   return (
     <div className="min-h-screen bg-slate-800 text-slate-100">
@@ -334,6 +336,8 @@ function App() {
         encryptedMnemonicCache={encryptedMnemonicCache}
         handleLockAndClear={handleLockAndClear}
         appVersion={__APP_VERSION__}
+        isLocked={isReadOnly}
+        onToggleLock={handleToggleLock}
       />
       <main className="max-w-7xl mx-auto px-6 py-4">
         <div className="p-6 md:p-8 space-y-6">
@@ -350,10 +354,10 @@ function App() {
  
              {/* Info Banner */}
              {recipientFpr && activeTab === 'backup' && (
-               <div className="p-3 bg-blue-50 border border-blue-200 rounded-lg flex items-start gap-3 text-blue-800 text-xs animate-in fade-in">
+               <div className="p-3 bg-teal-50 border border-teal-200 rounded-lg flex items-start gap-3 text-teal-800 text-xs animate-in fade-in">
                  <Info size={16} className="shrink-0 mt-0.5" />
                  <div>
-                   <strong>Recipient Key:</strong> <code className="bg-blue-100 px-1.5 py-0.5 rounded font-mono">{recipientFpr}</code>
+                   <strong>Recipient Key:</strong> <code className="bg-teal-100 px-1.5 py-0.5 rounded font-mono">{recipientFpr}</code>
                  </div>
                </div>
              )}
@@ -364,9 +368,11 @@ function App() {
                  {activeTab === 'backup' ? (
                    <>
                      <div className="space-y-2">
-                       <label className="text-sm font-semibold text-slate-700">BIP39 Mnemonic</label>
+                       <label className="text-sm font-semibold text-slate-200">BIP39 Mnemonic</label>
                        <textarea
-                         className="w-full h-32 p-4 bg-slate-50 border border-slate-200 rounded-xl text-sm font-mono text-slate-900 placeholder:text-slate-400 focus:outline-none focus:ring-2 focus:ring-blue-500 transition-all resize-none"
+                         className={`w-full h-32 p-4 bg-slate-50 border border-slate-200 rounded-xl text-sm font-mono text-slate-900 placeholder:text-slate-400 focus:outline-none focus:ring-2 focus:ring-teal-500 transition-all resize-none ${
+                            isReadOnly ? 'blur-sm select-none' : ''
+                          }`}
                        
                          data-sensitive="BIP39 Mnemonic"
                          placeholder="Enter your 12 or 24 word seed phrase..."
@@ -399,9 +405,11 @@ function App() {
                      </div>
  
                      <div className="space-y-2">
-                       <label className="text-sm font-semibold text-slate-700">SEEDPGP1 Payload</label>
+                       <label className="text-sm font-semibold text-slate-200">SEEDPGP1 Payload</label>
                        <textarea
-                         className="w-full h-32 p-4 bg-slate-50 border border-slate-200 rounded-xl text-xs font-mono text-slate-900 placeholder:text-slate-400 focus:outline-none focus:ring-2 focus:ring-blue-500 transition-all resize-none"
+                         className={`w-full h-32 p-4 bg-slate-50 border border-slate-200 rounded-xl text-xs font-mono text-slate-900 placeholder:text-slate-400 focus:outline-none focus:ring-2 focus:ring-teal-500 transition-all resize-none ${
+                            isReadOnly ? 'blur-sm select-none' : ''
+                          }`}
                        
                          placeholder="SEEDPGP1:0:ABCD:..."
                          value={restoreInput}
@@ -428,7 +436,9 @@ function App() {
                            <input
                              type="password"
                              data-sensitive="Message Password"
-                             className="w-full pl-10 pr-4 py-2.5 bg-white border border-slate-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-blue-500 transition-all"
+                                   className={`w-full pl-10 pr-4 py-2.5 bg-white border border-slate-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-teal-500 transition-all ${
+                                isReadOnly ? 'blur-sm select-none' : ''
+                              }`}
                              placeholder="Unlock private key..."
                              value={privateKeyPassphrase}
                              onChange={(e) => setPrivateKeyPassphrase(e.target.value)}
@@ -443,7 +453,7 @@ function App() {
  
                {/* Security Panel */}
                <div className="space-y-2"> {/* Added space-y-2 wrapper */}
-                 <label className="text-sm font-semibold text-slate-700 flex items-center gap-2">
+                 <label className="text-sm font-semibold text-slate-200 flex items-center gap-2">
                    <Lock size={14} /> SECURITY OPTIONS
                  </label>
                  
@@ -456,7 +466,9 @@ function App() {
                        <Lock className="absolute left-3 top-3 text-slate-400" size={16} />
                        <input
                          type="password"
-                         className="w-full pl-10 pr-4 py-2.5 bg-white border border-slate-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-blue-500 transition-all"
+                               className={`w-full pl-10 pr-4 py-2.5 bg-white border border-slate-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-teal-500 transition-all ${
+                                isReadOnly ? 'blur-sm select-none' : ''
+                              }`}
                          placeholder="Optional password..."
                          value={activeTab === 'backup' ? backupMessagePassword : restoreMessagePassword}
                          onChange={(e) => activeTab === 'backup' ? setBackupMessagePassword(e.target.value) : setRestoreMessagePassword(e.target.value)}
@@ -475,7 +487,7 @@ function App() {
                            checked={hasBip39Passphrase}
                            onChange={(e) => setHasBip39Passphrase(e.target.checked)}
                            disabled={isReadOnly}
-                           className="rounded text-blue-600 focus:ring-2 focus:ring-blue-500 transition-all"
+                           className="rounded text-teal-600 focus:ring-2 focus:ring-teal-500 transition-all"
                          />
                          <span className="text-xs font-medium text-slate-700 group-hover:text-slate-900 transition-colors">
                            BIP39 25th word active
@@ -484,12 +496,6 @@ function App() {
                      </div>
                    )}
  
-                   <ReadOnly
-                     isReadOnly={isReadOnly}
-                     onToggle={setIsReadOnly}
-                     appVersion={__APP_VERSION__}
-                     buildHash={__BUILD_HASH__}
-                   />
                  </div>
  
                  {/* Action Button */}
@@ -497,7 +503,7 @@ function App() {
                    <button
                      onClick={handleBackup}
                      disabled={!mnemonic || loading || isReadOnly}
-                     className="w-full py-4 bg-gradient-to-r from-blue-600 to-blue-700 text-white rounded-xl font-bold flex items-center justify-center gap-2 hover:from-blue-700 hover:to-blue-800 transition-all shadow-lg hover:shadow-xl disabled:opacity-50 disabled:cursor-not-allowed disabled:hover:from-blue-600 disabled:hover:to-blue-700"
+                     className="w-full py-4 bg-gradient-to-r from-teal-500 to-cyan-600 text-white rounded-xl font-bold flex items-center justify-center gap-2 hover:from-teal-600 hover:to-cyan-700 transition-all shadow-lg hover:shadow-xl disabled:opacity-50 disabled:cursor-not-allowed disabled:hover:from-teal-500 disabled:hover:to-cyan-600"
                    >
                      {loading ? (
                        <RefreshCw className="animate-spin" size={20} />
@@ -526,7 +532,7 @@ function App() {
              {/* QR Output */}
              {qrPayload && activeTab === 'backup' && (
                <div className="pt-6 border-t border-slate-200 space-y-6 animate-in fade-in slide-in-from-bottom-4">
-                 <div className="flex justify-center">
+                 <div className={isReadOnly ? 'blur-lg' : ''}>
                    <QrDisplay value={qrPayload} />
                  </div>
                  <div className="space-y-2">
@@ -549,7 +555,7 @@ function App() {
                      readOnly
                      value={qrPayload}
                      onFocus={(e) => e.currentTarget.select()}
-                     className="w-full h-28 p-3 bg-slate-900 rounded-xl font-mono text-[10px] text-green-400 placeholder:text-slate-500 border border-slate-700 shadow-inner leading-relaxed resize-none focus:outline-none focus:ring-2 focus:ring-blue-500"
+                     className="w-full h-28 p-3 bg-slate-900 rounded-xl font-mono text-[10px] text-green-400 placeholder:text-slate-500 border border-slate-700 shadow-inner leading-relaxed resize-none focus:outline-none focus:ring-2 focus:ring-teal-500"
                    />
                    <p className="text-[11px] text-slate-500">
                      Tip: click the box to select all, or use Copy.
@@ -575,7 +581,9 @@ function App() {
                    </div>
  
                    <div className="p-6 bg-white rounded-xl border-2 border-green-200 shadow-sm">
-                     <p className="font-mono text-center text-lg text-slate-800 tracking-wide leading-relaxed break-words">
+                     <p className={`font-mono text-center text-lg text-slate-800 tracking-wide leading-relaxed break-words ${
+                        isReadOnly ? 'blur-md select-none' : ''
+                      }`}>
                        {decryptedRestoredMnemonic}
                      </p>
                    </div>
@@ -584,6 +592,11 @@ function App() {
              )}
            </div>
       </main>
+      <Footer 
+        appVersion={__APP_VERSION__} 
+        buildHash={__BUILD_HASH__} 
+        buildTimestamp={__BUILD_TIMESTAMP__} 
+      />
 
       {/* QR Scanner Modal */}
       {showQRScanner && (
@@ -650,8 +663,45 @@ function App() {
           </div>
         </div>
       )}
+
+      {/* Lock Confirmation Modal */}
+      {showLockConfirm && (
+        <div className="fixed inset-0 bg-black/50 backdrop-blur-sm flex items-center justify-center z-50">
+          <div className="bg-slate-800 rounded-xl border border-slate-700 p-6 max-w-md w-full mx-4 shadow-2xl">
+            <h3 className="text-lg font-semibold text-white mb-4 flex items-center gap-2">
+              <Lock className="w-5 h-5 text-amber-500" />
+              Lock Sensitive Data?
+            </h3>
+            <div className="text-sm text-slate-300 space-y-3 mb-6">
+              <p>This will:</p>
+              <ul className="list-disc list-inside space-y-1 text-slate-400">
+                <li>Blur all sensitive data (mnemonics, keys, passwords)</li>
+                <li>Disable all inputs</li>
+                <li>Prevent clipboard operations</li>
+              </ul>
+              <p className="text-xs text-slate-500 mt-2">
+                Use this when showing the app to others or stepping away from your device.
+              </p>
+            </div>
+            <div className="flex gap-3">
+              <button 
+                className="flex-1 py-2 bg-slate-700 hover:bg-slate-600 rounded-lg transition-colors"
+                onClick={() => setShowLockConfirm(false)}
+              >
+                Cancel
+              </button>
+              <button 
+                className="flex-1 py-2 bg-amber-500 hover:bg-amber-600 text-white font-semibold rounded-lg transition-colors"
+                onClick={confirmLock}
+              >
+                Lock Data
+              </button>
+            </div>
+          </div>
+        </div>
+      )}
     </div>
   );
 }
 
-export default App;
+export default App;

src/components/Footer.tsx

@@ -0,0 +1,18 @@
+import React from 'react';
+
+interface FooterProps {
+    appVersion: string;
+    buildHash: string;
+    buildTimestamp: string;
+}
+
+const Footer: React.FC<FooterProps> = ({ appVersion, buildHash, buildTimestamp }) => {
+    return (
+        <footer className="text-center text-xs text-slate-400 p-4">
+            <p>SeedPGP v{appVersion} • build {buildHash} • {buildTimestamp}</p>
+            <p className="mt-1">Never share your private keys or seed phrases. Always verify on an airgapped device.</p>
+        </footer>
+    );
+};
+
+export default Footer;

src/components/Header.tsx

@@ -3,6 +3,7 @@ import { Shield, Lock } from 'lucide-react';
 import SecurityBadge from './badges/SecurityBadge';
 import StorageBadge from './badges/StorageBadge';
 import ClipboardBadge from './badges/ClipboardBadge';
+import EditLockBadge from './badges/EditLockBadge';
 
 interface StorageItem {
     key: string;
@@ -29,6 +30,8 @@ interface HeaderProps {
   encryptedMnemonicCache: any;
   handleLockAndClear: () => void;
   appVersion: string;
+  isLocked: boolean;
+  onToggleLock: () => void;
 }
 
 const Header: React.FC<HeaderProps> = ({ 
@@ -42,7 +45,9 @@ const Header: React.FC<HeaderProps> = ({
     setActiveTab,
     encryptedMnemonicCache,
     handleLockAndClear,
-    appVersion
+    appVersion,
+    isLocked,
+    onToggleLock
 }) => {
   return (
     <header className="sticky top-0 z-50 bg-slate-900 border-b border-slate-800 backdrop-blur-sm">
@@ -50,12 +55,12 @@ const Header: React.FC<HeaderProps> = ({
         <div className="flex items-center justify-between">
           {/* Left: Logo & Title */}
           <div className="flex items-center gap-3">
-            <div className="w-10 h-10 bg-blue-500 rounded-lg flex items-center justify-center">
+            <div className="w-10 h-10 bg-teal-500 rounded-lg flex items-center justify-center">
               <Shield className="w-6 h-6 text-white" />
             </div>
             <div>
               <h1 className="text-lg font-semibold text-white">
-                SeedPGP <span className="text-blue-400">v{appVersion}</span>
+                SeedPGP <span className="text-teal-400">v{appVersion}</span>
               </h1>
               <p className="text-xs text-slate-400">OpenPGP-secured BIP39 backup</p>
             </div>
@@ -70,6 +75,7 @@ const Header: React.FC<HeaderProps> = ({
             <div onClick={onOpenClipboardModal} className="cursor-pointer">
               <ClipboardBadge events={events} onOpenClipboardModal={onOpenClipboardModal} />
             </div>
+            <EditLockBadge isLocked={isLocked} onToggle={onToggleLock} />
           </div>
 
           {/* Right: Action Buttons */}
@@ -84,13 +90,13 @@ const Header: React.FC<HeaderProps> = ({
                 </button>
             )}
             <button 
-              className={`px-4 py-2 rounded-lg ${activeTab === 'backup' ? 'bg-blue-500 hover:bg-blue-600' : 'bg-slate-700 hover:bg-slate-600'}`}
+              className={`px-4 py-2 rounded-lg ${activeTab === 'backup' ? 'bg-teal-500 hover:bg-teal-600' : 'bg-slate-700 hover:bg-slate-600'}`}
               onClick={() => setActiveTab('backup')}
             >
               Backup
             </button>
             <button 
-              className={`px-4 py-2 rounded-lg ${activeTab === 'restore' ? 'bg-blue-500 hover:bg-blue-600' : 'bg-slate-700 hover:bg-slate-600'}`}
+              className={`px-4 py-2 rounded-lg ${activeTab === 'restore' ? 'bg-teal-500 hover:bg-teal-600' : 'bg-slate-700 hover:bg-slate-600'}`}
               onClick={() => setActiveTab('restore')}
             >
               Restore
@@ -107,6 +113,7 @@ const Header: React.FC<HeaderProps> = ({
           <div onClick={onOpenClipboardModal} className="cursor-pointer">
             <ClipboardBadge events={events} onOpenClipboardModal={onOpenClipboardModal} />
           </div>
+          <EditLockBadge isLocked={isLocked} onToggle={onToggleLock} />
         </div>
       </div>
     </header>

src/components/PgpKeyInput.tsx

@@ -52,7 +52,7 @@ export const PgpKeyInput: React.FC<PgpKeyInputProps> = ({
 
     return (
         <div className="space-y-2">
-            <label className="text-sm font-semibold text-slate-700 flex items-center justify-between">
+            <label className="text-sm font-semibold text-slate-200 flex items-center justify-between">
                 <span className="flex items-center gap-2">
                     {Icon && <Icon size={14} />} {label}
                 </span>
@@ -69,16 +69,17 @@ export const PgpKeyInput: React.FC<PgpKeyInputProps> = ({
                 onDrop={handleDrop}
             >
                 <textarea
-                    className={`w-full h-40 p-3 bg-slate-50 border rounded-xl text-xs font-mono transition-colors resize-none focus:outline-none focus:ring-2 focus:ring-blue-500 ${isDragging && !readOnly ? 'border-blue-500 bg-blue-50' : 'border-slate-200'
+                    className={`w-full h-40 p-3 bg-slate-50 border rounded-xl text-xs font-mono transition-colors resize-none focus:outline-none focus:ring-2 focus:ring-teal-500 ${isDragging && !readOnly ? 'border-teal-500 bg-teal-50' : 'border-slate-200'} ${
-                        }`}
+                        readOnly ? 'blur-sm select-none' : ''
+                      }`}
                     placeholder={placeholder}
                     value={value}
                     onChange={(e) => onChange(e.target.value)}
                     readOnly={readOnly}
                 />
                 {isDragging && !readOnly && (
-                    <div className="absolute inset-0 flex items-center justify-center bg-blue-50/90 rounded-xl border-2 border-dashed border-blue-500 pointer-events-none z-10">
+                    <div className="absolute inset-0 flex items-center justify-center bg-teal-50/90 rounded-xl border-2 border-dashed border-teal-500 pointer-events-none z-10">
-                        <div className="text-blue-600 font-bold flex flex-col items-center animate-bounce">
+                        <div className="text-teal-600 font-bold flex flex-col items-center animate-bounce">
                             <Upload size={24} />
                             <span className="text-sm mt-2">Drop Key File Here</span>
                         </div>

src/components/QRScanner.tsx

@@ -159,7 +159,7 @@ export default function QRScanner({ onScanSuccess, onClose }: QRScannerProps) {
                         <div className="space-y-3">
                             <button
                                 onClick={startCamera}
-                                className="w-full py-4 bg-gradient-to-r from-blue-600 to-blue-700 text-white rounded-xl font-semibold flex items-center justify-center gap-2 hover:from-blue-700 hover:to-blue-800 transition-all shadow-lg"
+                                className="w-full py-4 bg-gradient-to-r from-teal-500 to-cyan-600 text-white rounded-xl font-semibold flex items-center justify-center gap-2 hover:from-teal-600 hover:to-cyan-700 transition-all shadow-lg"
                             >
                                 <Camera size={20} />
                                 Use Camera
@@ -184,7 +184,7 @@ export default function QRScanner({ onScanSuccess, onClose }: QRScannerProps) {
                             {/* Info Box */}
                             <div className="pt-4 border-t border-slate-200">
                                 <div className="flex gap-2 text-xs text-slate-600 leading-relaxed">
-                                    <Info size={14} className="shrink-0 mt-0.5 text-blue-600" />
+                                    <Info size={14} className="shrink-0 mt-0.5 text-teal-600" />
                                     <div>
                                         <p><strong>Camera:</strong> Requires HTTPS or localhost</p>
                                         <p className="mt-1"><strong>Upload:</strong> Screenshot QR from Backup tab for testing</p>
@@ -210,7 +210,7 @@ export default function QRScanner({ onScanSuccess, onClose }: QRScannerProps) {
                     {/* File Processing View */}
                     {scanMode === 'file' && scanning && (
                         <div className="py-8 text-center">
-                            <div className="inline-block animate-spin rounded-full h-8 w-8 border-4 border-slate-200 border-t-blue-600"></div>
+                            <div className="inline-block animate-spin rounded-full h-8 w-8 border-4 border-slate-200 border-t-teal-600"></div>
                             <p className="mt-3 text-sm text-slate-600">Processing image...</p>
                         </div>
                     )}

src/components/ReadOnly.tsx

@@ -17,7 +17,7 @@ export function ReadOnly({ isReadOnly, onToggle, buildHash, appVersion }: ReadOn
           type="checkbox"
           checked={isReadOnly}
           onChange={(e) => onToggle(e.target.checked)}
-          className="rounded text-blue-600 focus:ring-2 focus:ring-blue-500 transition-all"
+          className="rounded text-teal-600 focus:ring-2 focus:ring-teal-500 transition-all"
         />
         <span className="text-xs font-medium text-slate-700 group-hover:text-slate-900 transition-colors">
           Read-only Mode

src/components/badges/EditLockBadge.tsx

@@ -0,0 +1,28 @@
+import React from 'react';
+import { Lock, Unlock } from 'lucide-react';
+
+interface EditLockBadgeProps {
+  isLocked: boolean;
+  onToggle: () => void;
+}
+
+const EditLockBadge: React.FC<EditLockBadgeProps> = ({ isLocked, onToggle }) => {
+  return (
+    <button
+      onClick={onToggle}
+      className={`flex items-center gap-2 px-3 py-1.5 rounded-lg border transition-all hover:scale-105 ${
+        isLocked
+          ? 'text-amber-500 bg-amber-500/10 border-amber-500/30 font-semibold'
+          : 'text-green-500 bg-green-500/10 border-green-500/30'
+      }`}
+      title={isLocked ? 'Click to unlock and edit' : 'Click to lock and blur sensitive data'}
+    >
+      {isLocked ? <Lock className="w-3.5 h-3.5" /> : <Unlock className="w-3.5 h-3.5" />}
+      <span className="text-xs font-medium">
+        {isLocked ? 'Locked' : 'Edit'}
+      </span>
+    </button>
+  );
+};
+
+export default EditLockBadge;

src/components/badges/StorageBadge.tsx

@@ -20,7 +20,7 @@ const StorageBadge: React.FC<StorageBadgeProps> = ({ localItems, sessionItems })
   const status = sensitiveCount > 0 ? 'Warning' : totalItems > 0 ? 'Active' : 'Empty';
   const colorClass = 
     status === 'Warning' ? 'text-amber-500/80' : 
-    status === 'Active' ? 'text-blue-500/80' : 
+    status === 'Active' ? 'text-teal-500/80' : 
     'text-green-500/80';
 
   return (

src/vite-env.d.ts

@@ -8,3 +8,4 @@ declare module '*.css' {
 
 declare const __APP_VERSION__: string;
 declare const __BUILD_HASH__: string;
+declare const __BUILD_TIMESTAMP__: string;

vite.config.ts

@@ -29,5 +29,6 @@ export default defineConfig({
   define: {
     '__APP_VERSION__': JSON.stringify(appVersion),
     '__BUILD_HASH__': JSON.stringify(gitHash),
+    '__BUILD_TIMESTAMP__': JSON.stringify(new Date().toISOString()),
   }
 })