diff --git a/7-bank-project/solution/app.js b/7-bank-project/solution/app.js
index a776bb18c9..ef12402106 100644
--- a/7-bank-project/solution/app.js
+++ b/7-bank-project/solution/app.js
@@ -2,312 +2,231 @@
 // Constants
 // ---------------------------------------------------------------------------
 
-const serverUrl = 'http://localhost:5000/api'; // reserved for future server swap
+const serverUrl = 'http://localhost:5000/api';
 const storageKey = 'savedAccount';
-const accountsKey = 'accounts';
-const schemaKey = 'schemaVersion';
-const schemaVersion = 1;
+const accountsKey = 'accounts'; // New key for all accounts
+const themeKey = 'appTheme'; // <--- NEW: Constant for theme storage
 
 // ---------------------------------------------------------------------------
-// Intl helpers
+// Theme Toggle Logic <--- NEW SECTION
 // ---------------------------------------------------------------------------
 
-const userLocale = navigator.language || 'en-IN';
-
-function isIsoCurrency(code) {
-  if (!code) return false;
-  const c = String(code).trim().toUpperCase();
-  if (!/^[A-Z]{3}$/.test(c)) return false;
-  // Verify against supported values when available
-  try {
-    if (typeof Intl.supportedValuesOf === 'function') {
-      return Intl.supportedValuesOf('currency').includes(c);
-    }
-  } catch {}
-  return true; // fallback accept 3-letter code
+window.toggleTheme = function() {
+  const html = document.documentElement;
+  const isDark = html.classList.toggle('dark-mode');
+  
+  // Toggle visibility of sun/moon icons based on the active class
+  const sun = document.getElementById('sun-icon');
+  const moon = document.getElementById('moon-icon');
+  if (sun && moon) {
+      // If dark mode is active (isDark is true), hide the moon and show the sun
+      moon.classList.toggle('hidden', isDark);
+      sun.classList.toggle('hidden', !isDark);
+  }
+
+  // Save preference to local storage
+  localStorage.setItem(themeKey, isDark ? 'dark' : 'light');
 }
 
-function toCurrency(amount, currency) {
-  const n = Number(amount);
-  if (!Number.isFinite(n)) return String(amount);
-  const c = String(currency || '').trim();
-  if (isIsoCurrency(c)) {
-    // Accounting style shows negatives in parentheses if supported
-    const fmt = new Intl.NumberFormat(userLocale, {
-      style: 'currency',
-      currency: c.toUpperCase(),
-      currencySign: 'accounting',
-      maximumFractionDigits: 2
-    });
-    return fmt.format(n);
+function applyThemeOnLoad() {
+  const html = document.documentElement;
+  const savedTheme = localStorage.getItem(themeKey);
+
+  // Default to system preference if no saved theme is found
+  const prefersDark = window.matchMedia('(prefers-color-scheme: dark)').matches;
+
+  let activateDark;
+  if (savedTheme) {
+    activateDark = savedTheme === 'dark';
+  } else {
+    activateDark = prefersDark;
   }
-  // Fallback: symbol + localized number
-  const num = new Intl.NumberFormat(userLocale, {
-    maximumFractionDigits: 2
-  }).format(n);
-  return c ? `${c} ${num}` : num;
-}
 
-function toDate(dateStr) {
-  // Expect yyyy-mm-dd; fallback to today if invalid
-  const d = dateStr ? new Date(dateStr) : new Date();
-  if (Number.isNaN(d.getTime())) return new Date();
-  return d;
-}
+  if (activateDark) {
+    html.classList.add('dark-mode');
+  } else {
+    html.classList.remove('dark-mode');
+  }
 
-function formatDate(dateStr) {
-  const d = toDate(dateStr);
-  const fmt = new Intl.DateTimeFormat(userLocale, { dateStyle: 'medium' });
-  return fmt.format(d);
+  // Ensure correct icon is visible on load (needs to wait for DOM elements)
+  // This logic runs again in updateRoute or dashboard refresh to ensure icons are set.
 }
 
+// Attach the function to run after the DOM content is loaded
+document.addEventListener('DOMContentLoaded', applyThemeOnLoad);
+
 // ---------------------------------------------------------------------------
-// Storage and state
+// Router
 // ---------------------------------------------------------------------------
 
-function safeParse(json, fallback) {
-  try { return JSON.parse(json); } catch { return fallback; }
+const routes = {
+  '/dashboard': { title: 'My Account', templateId: 'dashboard', init: refresh },
+  '/login': { title: 'Login', templateId: 'login' }
+};
+
+function navigate(path) {
+  window.history.pushState({}, path, window.location.origin + path);
+  updateRoute();
+}
+
+function updateRoute() {
+  const path = window.location.pathname;
+  const route = routes[path];
+
+  if (!route) {
+    return navigate('/dashboard');
+  }
+
+  const template = document.getElementById(route.templateId);
+  const view = template.content.cloneNode(true);
+  const app = document.getElementById('app');
+  app.innerHTML = '';
+  app.appendChild(view);
+
+  if (typeof route.init === 'function') {
+    route.init();
+  }
+
+  // Re-run icon setup after template is rendered
+  applyThemeOnLoad(); // <--- UPDATED: Call applyThemeOnLoad here too, to set icon state
+
+  document.title = route.title;
 }
 
+// ---------------------------------------------------------------------------
+// API interactions (replaced with localStorage logic)
+// ---------------------------------------------------------------------------
+
 function getAccounts() {
-  return safeParse(localStorage.getItem(accountsKey), []);
+  return JSON.parse(localStorage.getItem(accountsKey) || '[]');
 }
 
 function saveAccounts(accounts) {
   localStorage.setItem(accountsKey, JSON.stringify(accounts));
 }
 
-function migrateSchema() {
-  const v = Number(localStorage.getItem(schemaKey) || 0);
-  if (v >= schemaVersion) return;
-  let accounts = getAccounts();
-  // Example migration scaffolding:
-  // if (v < 1) { /* future migrations */ }
-  saveAccounts(accounts);
-  localStorage.setItem(schemaKey, String(schemaVersion));
-}
-
 function findAccount(user) {
   const accounts = getAccounts();
   return accounts.find(acc => acc.user === user) || null;
 }
 
 async function getAccount(user) {
+  // Simulate async
   return new Promise(resolve => {
     setTimeout(() => {
       const acc = findAccount(user);
-      resolve(acc || { error: 'Account not found' });
-    }, 60);
+      if (!acc) resolve({ error: 'Account not found' });
+      else resolve(acc);
+    }, 100);
   });
 }
 
-function uuid() {
-  // Works on HTTPS and localhost; fallback otherwise
-  if (globalThis.crypto && typeof crypto.randomUUID === 'function') {
-    return crypto.randomUUID();
-  }
-  return 'tx-' + Date.now().toString(36) + '-' + Math.random().toString(36).slice(2, 8);
-}
-
 async function createAccount(accountJson) {
   return new Promise(resolve => {
     setTimeout(() => {
-      const data = safeParse(accountJson, null);
-      if (!data) return resolve({ error: 'Malformed account data' });
-      const user = String(data.user || '').trim();
-      if (!user) return resolve({ error: 'Username required' });
-      if (findAccount(user)) return resolve({ error: 'User already exists' });
-
-      const currency = String(data.currency || 'INR').trim();
+      let data;
+      try {
+        data = JSON.parse(accountJson);
+      } catch (e) {
+        return resolve({ error: 'Malformed account data' });
+      }
+      if (!data.user) return resolve({ error: 'Username required' });
+      if (findAccount(data.user)) return resolve({ error: 'User already exists' });
+      // Set up initial account structure
       const newAcc = {
-        user,
-        description: String(data.description || ''),
-        balance: Number(data.balance || 0) || 0,
-        currency: isIsoCurrency(currency) ? currency.toUpperCase() : currency,
+        user: data.user,
+        description: data.description || '',
+        balance: 0,
+        currency: data.currency || 'USD',
         transactions: []
       };
       const accounts = getAccounts();
       accounts.push(newAcc);
       saveAccounts(accounts);
       resolve(newAcc);
-    }, 80);
+    }, 100);
   });
 }
 
 async function createTransaction(user, transactionJson) {
   return new Promise(resolve => {
     setTimeout(() => {
-      const tx = safeParse(transactionJson, null);
-      if (!tx) return resolve({ error: 'Malformed transaction data' });
-
-      const amount = Number(tx.amount);
-      const object = String(tx.object || '').trim();
-      const dateStr = tx.date || new Date().toISOString().slice(0, 10);
-
-      if (!Number.isFinite(amount)) return resolve({ error: 'Amount must be a valid number' });
-      if (!object) return resolve({ error: 'Object is required' });
-
       const accounts = getAccounts();
       const idx = accounts.findIndex(acc => acc.user === user);
       if (idx === -1) return resolve({ error: 'Account not found' });
-
-      const newTx = {
-        id: uuid(),
-        date: dateStr,
-        object,
-        amount
-      };
-
-      // Update balance and push transaction
-      accounts[idx].balance = (Number(accounts[idx].balance) || 0) + amount;
-      accounts[idx].transactions = (accounts[idx].transactions || []);
-      accounts[idx].transactions.push(newTx);
-
+      const tx = JSON.parse(transactionJson);
+      tx.amount = parseFloat(tx.amount);
+      tx.date = tx.date || new Date().toISOString().slice(0, 10);
+      accounts[idx].balance += tx.amount;
+      accounts[idx].transactions.push(tx);
       saveAccounts(accounts);
-      resolve(newTx);
-    }, 80);
+      resolve(tx);
+    }, 100);
   });
 }
 
-// Keep a frozen state object to avoid accidental mutations
+// ---------------------------------------------------------------------------
+// Global state
+// ---------------------------------------------------------------------------
+
 let state = Object.freeze({
   account: null
 });
 
 function updateState(property, newData) {
-  state = Object.freeze({ ...state, [property]: newData });
-  // Persist active account only
+  state = Object.freeze({
+    ...state,
+    [property]: newData
+  });
   localStorage.setItem(storageKey, JSON.stringify(state.account));
 }
 
-// Cross-tab sync: refresh when accounts or active account change in another tab
-window.addEventListener('storage', (e) => {
-  if (e.key === accountsKey || e.key === storageKey) {
-    if (state.account?.user) {
-      refresh().catch(() => {});
-    }
-  }
-});
-
 // ---------------------------------------------------------------------------
-// DOM helpers
-// ---------------------------------------------------------------------------
-
-function qs(id) {
-  return document.getElementById(id);
-}
-
-function updateElement(id, textOrNode) {
-  const el = qs(id);
-  if (!el) return;
-  while (el.firstChild) el.removeChild(el.firstChild);
-  el.append(textOrNode);
-}
-
-// Resolve multiple possible IDs used by older markup
-function setTextByAnyId(ids, text) {
-  for (const id of ids) {
-    const el = qs(id);
-    if (el) { el.textContent = text; return true; }
-  }
-  return false;
-}
-
-// ---------------------------------------------------------------------------
-// Router
-// ---------------------------------------------------------------------------
-
-const routes = {
-  '/dashboard': { title: 'My Account', templateId: 'dashboard', init: refresh },
-  '/login': { title: 'Login', templateId: 'login', init: attachAuthHandlers }
-};
-
-function navigate(path) {
-  // Store path in history state and URL
-  history.pushState({ path }, '', path);
-  updateRoute();
-}
-
-function updateRoute() {
-  const path = history.state?.path || window.location.pathname;
-  const route = routes[path] || routes['/dashboard'];
-
-  const template = document.getElementById(route.templateId);
-  const view = template.content.cloneNode(true);
-  const app = document.getElementById('app');
-  app.innerHTML = '';
-  app.appendChild(view);
-
-  // Attach handlers after DOM is rendered
-  attachGlobalHandlers();
-
-  if (typeof route.init === 'function') {
-    Promise.resolve(route.init()).catch(err => console.error(err));
-  }
-  document.title = route.title;
-}
-
-// Browser back/forward
-window.addEventListener('popstate', () => updateRoute());
-
-// ---------------------------------------------------------------------------
-// Auth
+// Login/register
 // ---------------------------------------------------------------------------
 
 async function login() {
-  const form = qs('loginForm');
-  if (!form) return;
-  if (!form.checkValidity()) { form.reportValidity(); return; }
-
-  const user = String(form.user.value || '').trim();
+  const loginForm = document.getElementById('loginForm')
+  const user = loginForm.user.value;
   const data = await getAccount(user);
-  if (data.error) return updateElement('loginError', data.error);
+
+  if (data.error) {
+    return updateElement('loginError', data.error);
+  }
 
   updateState('account', data);
   navigate('/dashboard');
 }
 
 async function register() {
-  const form = qs('registerForm');
-  if (!form) return;
-  if (!form.checkValidity()) { form.reportValidity(); return; }
-
-  const data = Object.fromEntries(new FormData(form));
-  data.user = String(data.user || '').trim();
-  data.currency = String(data.currency || '').trim();
-  data.description = String(data.description || '').trim();
-  data.balance = Number(data.balance || 0) || 0;
-
+  const registerForm = document.getElementById('registerForm');
+  const formData = new FormData(registerForm);
+  const data = Object.fromEntries(formData);
   const jsonData = JSON.stringify(data);
   const result = await createAccount(jsonData);
 
-  if (result.error) return updateElement('registerError', result.error);
+  if (result.error) {
+    return updateElement('registerError', result.error);
+  }
 
   updateState('account', result);
   navigate('/dashboard');
 }
 
-function attachAuthHandlers() {
-  const loginForm = qs('loginForm');
-  if (loginForm) {
-    loginForm.addEventListener('submit', (e) => { e.preventDefault(); login(); });
-  }
-  const registerForm = qs('registerForm');
-  if (registerForm) {
-    registerForm.addEventListener('submit', (e) => { e.preventDefault(); register(); });
-  }
-}
-
 // ---------------------------------------------------------------------------
 // Dashboard
 // ---------------------------------------------------------------------------
 
 async function updateAccountData() {
   const account = state.account;
-  if (!account) return logout();
+  if (!account) {
+    return logout();
+  }
 
   const data = await getAccount(account.user);
-  if (data.error) return logout();
+  if (data.error) {
+    return logout();
+  }
 
   updateState('account', data);
 }
@@ -319,133 +238,89 @@ async function refresh() {
 
 function updateDashboard() {
   const account = state.account;
-  if (!account) return logout();
-
-  // Description (support both #description and #transactions-description subtitles)
-  setTextByAnyId(['description', 'transactions-description'], account.description || 'Transactions');
-
-  // Balance and currency
-  const balanceText = toCurrency(account.balance, account.currency);
-  setTextByAnyId(['balance', 'balance-value'], balanceText);
+  if (!account) {
+    return logout();
+  }
 
-  // Some markups use a separate currency span; keep it empty when using formatted output
-  setTextByAnyId(['balance-currency', 'currency'], '');
+  updateElement('description', account.description);
+  updateElement('balance', account.balance.toFixed(2));
+  updateElement('currency', account.currency);
 
-  // Transactions (sorted by date desc, then by insertion order)
-  const tbody = qs('transactions');
-  if (!tbody) return;
+  // Update transactions
+  const transactionsRows = document.createDocumentFragment();
+  for (const transaction of account.transactions) {
+    const transactionRow = createTransactionRow(transaction);
+    transactionsRows.appendChild(transactionRow);
+  }
+  updateElement('transactions', transactionsRows);
+}
 
-  const frag = document.createDocumentFragment();
+function createTransactionRow(transaction) {
   const template = document.getElementById('transaction');
-
-  const sorted = [...(account.transactions || [])]
-    .sort((a, b) => String(b.date).localeCompare(String(a.date)));
-
-  for (const tx of sorted) {
-    const row = template.content.cloneNode(true);
-    const tr = row.querySelector('tr');
-    const tds = tr.children;
-    tds[0].textContent = formatDate(tx.date);
-    tds[1].textContent = tx.object;
-    tds[2].textContent = toCurrency(tx.amount, account.currency);
-    if (tx.amount < 0) tr.classList.add('debit');
-    if (tx.amount > 0) tr.classList.add('credit');
-    frag.appendChild(row);
+  const transactionRow = template.content.cloneNode(true);
+  const tr = transactionRow.querySelector('tr');
+ 
+  // START: FIX - FORMAT DATE
+  // The date is typically stored as 'YYYY-MM-DD'. We convert it to 'MM/DD/YYYY' for display.
+  const dateParts = transaction.date.split('-');
+  const displayDate = dateParts[1] + '/' + dateParts[2] + '/' + dateParts[0]; 
+  // END: FIX
+
+  tr.children[0].textContent = displayDate; // Use displayDate
+  tr.children[1].textContent = transaction.object;
+  tr.children[2].textContent = transaction.amount.toFixed(2);
+  
+  // Optionally highlight positive/negative transactions
+  if (transaction.amount < 0) {
+    tr.classList.add('negative');
+  } else if (transaction.amount > 0) {
+    tr.classList.add('positive');
   }
 
-  tbody.innerHTML = '';
-  tbody.appendChild(frag);
+  return transactionRow;
 }
 
 function addTransaction() {
-  const dialog = qs('transactionDialog');
-  if (!dialog) return;
+  const dialog = document.getElementById('transactionDialog');
   dialog.classList.add('show');
 
-  // Reset form and set today
-  const form = qs('transactionForm');
-  if (form) {
-    form.reset();
-    form.date.valueAsDate = new Date();
-    // Move focus to first field
-    form.date.focus();
-  }
-
-  // Close handlers
-  const backdrop = dialog.querySelector('[data-dismiss]') || dialog;
-  backdrop.addEventListener('click', onDialogDismissClick);
-  dialog.addEventListener('keydown', onDialogKeydown);
-}
+  // Reset form
+  const transactionForm = document.getElementById('transactionForm');
+  transactionForm.reset();
 
-function onDialogDismissClick(e) {
-  if (e.target?.hasAttribute?.('data-dismiss')) {
-    cancelTransaction();
-  }
-}
-
-function onDialogKeydown(e) {
-  if (e.key === 'Escape') {
-    cancelTransaction();
-  }
+  // Set date to today
+  transactionForm.date.valueAsDate = new Date();
 }
 
 async function confirmTransaction() {
-  const form = qs('transactionForm');
-  if (!form) return;
-
-  // Inline validation
-  const amountVal = Number(form.amount.value);
-  const objectVal = String(form.object.value || '').trim();
-  if (!Number.isFinite(amountVal)) {
-    setFormError('transactionError', 'Amount must be a valid number');
-    return;
-  }
-  if (!objectVal) {
-    setFormError('transactionError', 'Object is required');
-    return;
-  }
+  const dialog = document.getElementById('transactionDialog');
+  dialog.classList.remove('show');
 
-  clearFormError('transactionError');
+  const transactionForm = document.getElementById('transactionForm');
 
-  const jsonData = JSON.stringify(Object.fromEntries(new FormData(form)));
+  const formData = new FormData(transactionForm);
+  const jsonData = JSON.stringify(Object.fromEntries(formData));
   const data = await createTransaction(state.account.user, jsonData);
 
   if (data.error) {
-    setFormError('transactionError', data.error);
-    return;
+    return updateElement('transactionError', data.error);
   }
 
-  // Update local state
+  // Update local state with new transaction
   const newAccount = {
     ...state.account,
-    balance: (Number(state.account.balance) || 0) + data.amount,
-    transactions: [...(state.account.transactions || []), data]
-  };
+    balance: state.account.balance + data.amount,
+    transactions: [...state.account.transactions, data]
+  }
   updateState('account', newAccount);
 
-  // Close dialog and update view
-  cancelTransaction();
+  // Update display
   updateDashboard();
 }
 
-function setFormError(id, message) {
-  updateElement(id, message);
-  const el = qs(id);
-  if (el) el.focus();
-}
-
-function clearFormError(id) {
-  const el = qs(id);
-  if (el) el.textContent = '';
-}
-
-function cancelTransaction() {
-  const dialog = qs('transactionDialog');
-  if (!dialog) return;
+async function cancelTransaction() {
+  const dialog = document.getElementById('transactionDialog');
   dialog.classList.remove('show');
-  dialog.removeEventListener('keydown', onDialogKeydown);
-  const opener = document.querySelector('button[onclick="addTransaction()"]');
-  if (opener) opener.focus();
 }
 
 function logout() {
@@ -454,31 +329,22 @@ function logout() {
 }
 
 // ---------------------------------------------------------------------------
-// Global listeners
+// Utils
 // ---------------------------------------------------------------------------
 
-function attachGlobalHandlers() {
-  // Intercept form submissions for inline handlers in markup
-  const loginForm = qs('loginForm');
-  if (loginForm && !loginForm.__wired) {
-    loginForm.__wired = true;
-    loginForm.addEventListener('submit', (e) => { e.preventDefault(); login(); });
-  }
-  const registerForm = qs('registerForm');
-  if (registerForm && !registerForm.__wired) {
-    registerForm.__wired = true;
-    registerForm.addEventListener('submit', (e) => { e.preventDefault(); register(); });
-  }
-  const txForm = qs('transactionForm');
-  if (txForm && !txForm.__wired) {
-    txForm.__wired = true;
-    txForm.addEventListener('submit', (e) => { e.preventDefault(); confirmTransaction(); });
-  }
-  const cancelBtn = document.querySelector('#transactionDialog [data-dismiss]');
-  if (cancelBtn && !cancelBtn.__wired) {
-    cancelBtn.__wired = true;
-    cancelBtn.addEventListener('click', cancelTransaction);
+function updateElement(id, textOrNode) {
+  const element = document.getElementById(id);
+  element.textContent = ''; // Removes all children
+
+  // START: FIX - Handle Text vs. Node/Fragment Appending Robustly
+  // When dealing with complex DOM nodes (like the DocumentFragment holding transactions),
+  // we must use appendChild. For simple text (like balance/error), textContent is fine.
+  if (textOrNode instanceof Node) {
+    element.appendChild(textOrNode);
+  } else {
+    element.textContent = textOrNode;
   }
+  // END: FIX
 }
 
 // ---------------------------------------------------------------------------
@@ -486,20 +352,16 @@ function attachGlobalHandlers() {
 // ---------------------------------------------------------------------------
 
 function init() {
-  // Schema migration
-  migrateSchema();
-
-  // Restore active account
-  const saved = safeParse(localStorage.getItem(storageKey), null);
-  if (saved) updateState('account', saved);
-
-  // Seed history state if missing
-  if (!history.state || !history.state.path) {
-    const initialPath = state.account ? '/dashboard' : '/login';
-    history.replaceState({ path: initialPath }, '', initialPath);
+  // Restore state
+  const savedState = localStorage.getItem(storageKey);
+  if (savedState) {
+    updateState('account', JSON.parse(savedState));
   }
-
-  // Initial route render
+  
+  // applyThemeOnLoad() is now called via DOMContentLoaded and updateRoute
+  
+  // Update route for browser back/next buttons
+  window.onpopstate = () => updateRoute();
   updateRoute();
 }
 
diff --git a/7-bank-project/solution/index.html b/7-bank-project/solution/index.html
index 5e3c66e866..2b4481fb03 100644
--- a/7-bank-project/solution/index.html
+++ b/7-bank-project/solution/index.html
@@ -1,96 +1,47 @@
 <!DOCTYPE html>
-<html lang="en" data-theme="auto">
+<html lang="en">
 <head>
   <meta charset="UTF-8">
-  <meta name="viewport" content="width=device-width,initial-scale=1,viewport-fit=cover">
-  <meta name="theme-color" content="#0a7cff">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <title>Squirrel Banking</title>
-
-  <!-- Local Font Awesome (ensure this path exists locally) -->
-  <link rel="stylesheet" href="assets/fontawesome/css/all.min.css">
-
-  <!-- App styles -->
   <link rel="stylesheet" href="styles.css">
-
-  <!-- App logic -->
   <script src="app.js" defer></script>
 </head>
 <body>
-  <noscript>Please enable JavaScript to use this app.</noscript>
-
-  <!-- SPA mount point -->
-  <div id="app" aria-live="polite">Loading…</div>
+  <!-- Placeholder where we will insert our app HTML based on route -->
+  <div id="app">Loading...</div>
 
   <!-- Login page template -->
   <template id="login">
-    <section class="page page-auth" aria-labelledby="loginTitle">
-      <div class="auth-card">
-        <div class="brand">
-          <i class="fa-solid fa-squirrel brand-icon" aria-hidden="true"></i>
-          <h1 id="loginTitle" class="brand-title">
-            <span class="hide-xs">Squirrel</span>
-            <img class="brand-logo" src="logo.svg" alt="Squirrel Banking Logo">
-            <span class="hide-xs">Banking</span>
-          </h1>
+    <section class="login-page">
+      <div class="login-container">
+        <div class="login-title text-center">
+          <span class="hide-xs">Squirrel</span>
+          <img class="login-logo" src="logo.svg" alt="Squirrel Banking Logo">
+          <span class="hide-xs">Banking</span>
         </div>
-
-        <div class="auth-panels">
-          <section class="auth-panel" aria-labelledby="loginHeading">
-            <h2 id="loginHeading" class="panel-title">
-              <i class="fa-solid fa-right-to-bracket" aria-hidden="true"></i> Login
-            </h2>
-            <form id="loginForm" action="javascript:void(0)" novalidate>
-              <label for="username" class="field-label">Username</label>
-              <div class="field">
-                <i class="fa-solid fa-user" aria-hidden="true"></i>
-                <input id="username" name="user" type="text" maxlength="20" autocomplete="username" required>
-              </div>
-              <div id="loginError" class="error" role="alert" aria-live="polite"></div>
-              <button class="btn btn-primary" type="submit">
-                <i class="fa-solid fa-arrow-right-to-bracket" aria-hidden="true"></i>
-                Login
-              </button>
-            </form>
-          </section>
-
-          <div class="auth-sep" role="separator" aria-label="Or">OR</div>
-
-          <section class="auth-panel" aria-labelledby="registerHeading">
-            <h2 id="registerHeading" class="panel-title">
-              <i class="fa-solid fa-user-plus" aria-hidden="true"></i> Register
-            </h2>
-            <form id="registerForm" action="javascript:void(0)" novalidate>
-              <label for="user" class="field-label">Username (required)</label>
-              <div class="field">
-                <i class="fa-solid fa-id-badge" aria-hidden="true"></i>
-                <input id="user" name="user" type="text" maxlength="20" autocomplete="username" required>
-              </div>
-
-              <label for="currency" class="field-label">Currency (required)</label>
-              <div class="field">
-                <i class="fa-solid fa-coins" aria-hidden="true"></i>
-                <input id="currency" name="currency" type="text" maxlength="5" placeholder="INR or ₹" required>
-              </div>
-
-              <label for="description" class="field-label">Description</label>
-              <div class="field">
-                <i class="fa-solid fa-note-sticky" aria-hidden="true"></i>
-                <input id="description" name="description" type="text" maxlength="100" placeholder="About the account">
-              </div>
-
-              <label for="current-balance" class="field-label">Current balance</label>
-              <div class="field">
-                <i class="fa-solid fa-wallet" aria-hidden="true"></i>
-                <input id="current-balance" name="balance" type="number" value="0" step="any" inputmode="decimal">
-              </div>
-
-              <div id="registerError" class="error" role="alert" aria-live="polite"></div>
-              <button class="btn btn-ghost" type="submit">
-                <i class="fa-solid fa-user-check" aria-hidden="true"></i>
-                Register
-              </button>
-            </form>
-          </section>
+        <div class="login-content">
+          <h2 class="text-center">Login</h2>
+          <form id="loginForm" action="javascript:login()">
+            <label for="username">Username</label>
+            <input id="username" name="user" type="text" maxlength="20" required>
+            <div id="loginError" class="error" role="alert"></div>
+            <button>Login</button>
+          </form>
+          <p class="login-separator text-center"><span>OR</span></p>
+          <h2 class="text-center">Register</h2>
+          <form id="registerForm" action="javascript:register()">
+            <label for="user">Username (required)</label>
+            <input id="user" name="user" type="text" maxlength="20" required>
+            <label for="currency">Currency (required)</label>
+            <input id="currency" name="currency" type="text" maxlength="5" value="$" required>
+            <label for="description">Description</label>
+            <input id="description" name="description" type="text" maxlength="100">
+            <label for="current-balance">Current balance</label>
+            <input id="current-balance" name="balance" type="number" value="0">
+            <div id="registerError" class="error" role="alert"></div>
+            <button>Register</button>
+          </form>
         </div>
       </div>
     </section>
@@ -98,109 +49,73 @@ <h2 id="registerHeading" class="panel-title">
 
   <!-- Dashboard page template -->
   <template id="dashboard">
-    <section class="page page-dash">
-      <header class="dash-header">
-        <div class="brand compact">
-          <img class="brand-logo" src="logo.svg" alt="">
-          <h1 class="brand-title hide-xs">Squirrel Banking</h1>
-        </div>
-        <div class="header-actions">
-          <button class="btn btn-icon" type="button" id="themeToggle" aria-label="Toggle theme">
-            <i class="fa-solid fa-moon" aria-hidden="true"></i>
-          </button>
-          <button class="btn btn-icon" type="button" onclick="logout()" aria-label="Logout">
-            <i class="fa-solid fa-right-from-bracket" aria-hidden="true"></i>
-          </button>
-        </div>
+    <section class="dashboard-page">
+      <header class="dashboard-header">
+        <img class="dashboard-logo" src="logo.svg" alt="Squirrel Banking Logo">
+        <h1 class="dashboard-title hide-xs">Squirrel Banking</h1>
+        <button id="theme-toggle" onclick="toggleTheme()" aria-label="Toggle dark/light theme">
+            <!-- Moon Icon (for Light mode) -->
+            <svg id="moon-icon" class="w-6 h-6" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2">
+                <path stroke-linecap="round" stroke-linejoin="round" d="M20.354 15.354A9 9 0 018.646 3.646 9.003 9.003 0 0012 21a9.003 9.003 0 008.354-5.646z" />
+            </svg>
+            <!-- Sun Icon (for Dark mode, hidden by default) -->
+            <svg id="sun-icon" class="w-6 h-6 hidden" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2">
+                <path stroke-linecap="round" stroke-linejoin="round" d="M12 3v1m0 16v1m9-9h-1M4 12H3m15.364 6.364l-.707-.707M6.343 6.343l-.707-.707m12.728 0l-.707.707M6.343 17.657l-.707.707M16 12a4 4 0 11-8 0 4 4 0 018 0z" />
+            </svg>
+        </button>
+        <button onclick="logout()">Logout</button>
       </header>
-
-      <section class="summary">
-        <div class="balance" aria-live="polite">
-          <div class="balance-label">
-            <i class="fa-solid fa-chart-line" aria-hidden="true"></i>
-            Balance
-          </div>
-          <div class="balance-value">
-            <span id="balance">0</span>
-            <span id="balance-currency"></span>
-          </div>
-        </div>
-        <div class="account-meta">
-          <i class="fa-solid fa-circle-info" aria-hidden="true"></i>
-          <span id="account-info" class="muted"></span>
+      <div class="balance">
+        <div>Balance</div>
+        <span id="balance"></span>
+        <span id="balance-currency"></span>
+      </div>
+      <!-- START: CHANGED SECTION for Theme Toggle and Logout -->
+        <div class="header-actions">
+            <button id="theme-toggle" onclick="toggleTheme()" aria-label="Toggle dark/light theme">
+                <!-- Moon Icon (for Light mode) -->
+                <svg id="moon-icon" class="w-6 h-6" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2">
+                    <path stroke-linecap="round" stroke-linejoin="round" d="M20.354 15.354A9 9 0 018.646 3.646 9.003 9.003 0 0012 21a9.003 9.003 0 008.354-5.646z" />
+                </svg>
+                <!-- Sun Icon (for Dark mode, hidden by default) -->
+                <svg id="sun-icon" class="w-6 h-6 hidden" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2">
+                    <path stroke-linecap="round" stroke-linejoin="round" d="M12 3v1m0 16v1m9-9h-1M4 12H3m15.364 6.364l-.707-.707M6.343 6.343l-.707-.707m12.728 0l-.707.707M6.343 17.657l-.707.707M16 12a4 4 0 11-8 0 4 4 0 018 0z" />
+                </svg>
+            </button>
+            <button onclick="logout()">Logout</button>
         </div>
-      </section>
-
-      <section class="dash-content">
+        <!-- END: CHANGED SECTION -->
+      <div class="dashboard-content">
         <div class="transactions-title">
-          <h2 id="transactions-description">
-            <i class="fa-solid fa-receipt" aria-hidden="true"></i>
-            Transactions
-          </h2>
-          <button class="btn btn-primary" type="button" onclick="addTransaction()">
-            <i class="fa-solid fa-plus" aria-hidden="true"></i>
-            Add transaction
-          </button>
+          <h2 id="transactions-description"></h2>
+          <button onclick="addTransaction()">Add transaction</button>
         </div>
-
         <table class="transactions-table" aria-label="Transactions">
           <thead>
             <tr>
-              <th scope="col"><i class="fa-solid fa-calendar-day" aria-hidden="true"></i> Date</th>
-              <th scope="col"><i class="fa-solid fa-file-lines" aria-hidden="true"></i> Object</th>
-              <th scope="col" class="num"><i class="fa-solid fa-indian-rupee-sign" aria-hidden="true"></i> Amount</th>
+              <th>Date</th>
+              <th>Object</th>
+              <th>Amount</th>
             </tr>
           </thead>
           <tbody id="transactions"></tbody>
         </table>
-      </section>
+      </div>
     </section>
-
-    <!-- Modal dialog: Add transaction -->
-    <section id="transactionDialog" class="dialog" hidden>
-      <div class="dialog-backdrop" data-dismiss></div>
-      <div class="dialog-content"
-           role="dialog"
-           aria-modal="true"
-           aria-labelledby="txDialogTitle"
-           aria-describedby="txDialogDesc">
-        <h2 id="txDialogTitle" class="text-center">
-          <i class="fa-solid fa-square-plus" aria-hidden="true"></i>
-          Add transaction
-        </h2>
-        <p id="txDialogDesc" class="muted text-center">
-          Use negative amount for debit and positive for credit; Esc closes [web guideline aligned]. 
-        </p>
-        <form id="transactionForm" action="javascript:void(0)" novalidate>
-          <label for="date">Date</label>
-          <div class="field">
-            <i class="fa-solid fa-calendar-days" aria-hidden="true"></i>
-            <input id="date" name="date" type="date" required>
-          </div>
-
-          <label for="object">Object</label>
-          <div class="field">
-            <i class="fa-solid fa-tag" aria-hidden="true"></i>
-            <input id="object" name="object" type="text" maxlength="50" required>
-          </div>
-
-          <label for="amount">Amount (negative for debit)</label>
-          <div class="field">
-            <i class="fa-solid fa-money-bill-transfer" aria-hidden="true"></i>
-            <input id="amount" name="amount" type="number" value="0" step="any" inputmode="decimal" required>
-          </div>
-
-          <div id="transactionError" class="error" role="alert" aria-live="polite"></div>
-
+    <section id="transactionDialog" class="dialog">
+      <div class="dialog-content">
+        <h2 class="text-center">Add transaction</h2>
+        <form id="transactionForm" action="javascript:void(0)">
+          <label for="date">Date</label> 
+          <input id="date" name="date" type="date" required>
+          <label for="object">Object</label> 
+          <input id="object" name="object" type="text" maxlength="50" required>
+          <label for="amount">Amount (use negative value for debit)</label> 
+          <input id="amount" name="amount" type="number" value="0" step="any" required>
+          <div id="transactionError" class="error" role="alert"></div>
           <div class="dialog-buttons">
-            <button type="button" class="btn btn-ghost" data-dismiss>
-              <i class="fa-solid fa-xmark" aria-hidden="true"></i>
-              Cancel
-            </button>
-            <button type="submit" class="btn btn-primary">
-              <i class="fa-solid fa-check" aria-hidden="true"></i>
-              OK
-            </button>
+            <button type="button" class="button-alt" formaction="javascript:cancelTransaction()" formnovalidate>Cancel</button>
+            <button formaction="javascript:confirmTransaction()">OK</button>
           </div>
         </form>
       </div>
@@ -212,8 +127,8 @@ <h2 id="txDialogTitle" class="text-center">
     <tr>
       <td></td>
       <td></td>
-      <td class="num"></td>
+      <td></td>
     </tr>
   </template>
 </body>
-</html>
+</html>
\ No newline at end of file
diff --git a/7-bank-project/solution/styles.css b/7-bank-project/solution/styles.css
index f7370aaec4..73e96dfb19 100644
--- a/7-bank-project/solution/styles.css
+++ b/7-bank-project/solution/styles.css
@@ -1,83 +1,41 @@
-/* ==========================================================================
-   Design Tokens and Theming
-   ========================================================================== */
-
 :root {
-  /* Brand */
+  /* Colors */
   --primary: #0091ea;
-  --primary-600: #007ccc;
-  --primary-700: #0066a8;
-
-  /* Neutrals */
-  --text: #1b1f24;
-  --muted: #5a6370;
-  --white: #ffffff;
-  --surface: #ffffff;
-  --surface-2: #f5f7fb;
-  --border: #c7cdd8;
-
-  /* Accents */
+  --primary-light: #7bbde6;
   --accent: #546e7a;
-  --error: #ff5522;
-
-  /* Backgrounds */
+  --grey: #445;
+  --error: #f52;
   --background: #f5f5f6;
-  --background-accent: #e8f2fb;
-
-  /* Effects */
-  --shadow-sm: 0 1px 2px rgba(16, 24, 40, .06);
-  --shadow-md: 0 6px 16px rgba(16, 24, 40, .12);
-  --focus: 3px solid rgba(0, 145, 234, .4);
-
-  /* Radius and Spacing */
-  --radius: 12px;
-  --radius-sm: 8px;
-  --space-2xs: 4px;
-  --space-xs: 6px;
+  --background-accent: #cfe5f2;
+  --white: #fff;
+  --border: #99a;
+  /* Sizes */
+  --radius: 10px;
+  --space-xs: 5px;
   --space-sm: 10px;
   --space-md: 20px;
-  --space-lg: 28px;
   --space-xl: 40px;
-
-  /* Typography */
-  --font-ui: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", sans-serif;
-  --font-size: 16px;
-
-  /* Opt into user color schemes */
-  color-scheme: light dark;
-}
-
-/* Dark theme via user preference */
-@media (prefers-color-scheme: dark) {
-  :root {
-    --text: #e9edf4;
-    --muted: #aab4c3;
-    --surface: #131720;
-    --surface-2: #0f131b;
-    --background: #0b0e14;
-    --background-accent: #0f1822;
-    --border: #2a3443;
-    --shadow-sm: 0 1px 2px rgba(0,0,0,.45);
-    --shadow-md: 0 8px 24px rgba(0,0,0,.5);
-    --focus: 3px solid rgba(0, 145, 234, .55);
-  }
 }
 
-/* Respect reduced motion */
-@media (prefers-reduced-motion: reduce) {
-  * {
-    animation-duration: 1ms !important;
-    animation-iteration-count: 1 !important;
-    transition-duration: 1ms !important;
-    scroll-behavior: auto !important;
-  }
+/* START: Dark Mode Variables */
+:root.dark-mode {
+  --primary: #5cb3ff; /* Lighter primary for contrast */
+  --primary-light: #004d80;
+  --grey: #a0aec0; /* Lighter grey for text */
+  --background: #1a202c; /* Dark background */
+  --background-accent: #2d3748; /* Slightly lighter dark background */
+  --white: #1f2937; /* Dark equivalent of 'white' for containers */
+  --border: #4a5568;
 }
+/* END: Dark Mode Variables */
 
-/* ==========================================================================
-   Base and Reset
-   ========================================================================== */
+/* ------------------------------------------------------------------------ */
+/* Micro reset */
+/* ------------------------------------------------------------------------ */
 
-* { box-sizing: border-box; }
+* {
+  box-sizing: border-box;
+}
 
 html, body, #app {
   margin: 0;
@@ -85,183 +43,125 @@ html, body, #app {
   height: 100%;
 }
 
-html {
-  font-size: 100%;
-}
+/* ------------------------------------------------------------------------ */
+/* General styles */
+/* ------------------------------------------------------------------------ */
 
 body {
-  font-family: var(--font-ui);
-  font-size: var(--font-size);
-  color: var(--text);
-  background: var(--background);
-  -webkit-font-smoothing: antialiased;
-  -moz-osx-font-smoothing: grayscale;
-  accent-color: var(--primary);
-}
-
-/* Utilities */
-.text-center { text-align: center; }
-.hide-xs { display: none; }
-@media (min-width: 480px) { .hide-xs { display: initial; } }
-
-.sr-only {
-  position: absolute;
-  width: 1px; height: 1px;
-  padding: 0; margin: -1px;
-  overflow: hidden; clip: rect(0, 0, 1px, 1px);
-  white-space: nowrap; border: 0;
-}
-
-/* Focus states (WCAG-friendly) */
-:where(a, button, [role="button"], input, select, textarea):focus-visible {
-  outline: var(--focus);
-  outline-offset: 2px;
-  border-radius: 6px;
+  font-family: Arial, Helvetica, sans-serif;
+  font-size: 16px;
+  /* Apply background and foreground colors from variables */
+  background-color: var(--background);
+  color: var(--grey);
+  transition: background-color 0.3s, color 0.3s; /* Smooth transition */
 }
 
-/* ==========================================================================
-   Headings and Text
-   ========================================================================== */
-
 h2 {
   color: var(--primary);
   text-transform: uppercase;
-  font-weight: 700;
+  font-weight: bold;
   font-size: 1.5rem;
   margin: var(--space-md) 0;
 }
 
-/* Muted text helper */
-.muted { color: var(--muted); }
-
-/* ==========================================================================
-   Forms
-   ========================================================================== */
-
 form {
   display: flex;
   flex-direction: column;
   margin: var(--space-sm) var(--space-md);
-  gap: var(--space-xs);
 }
 
-label {
-  color: var(--muted);
-  text-transform: uppercase;
-  font-size: 80%;
-  letter-spacing: .02em;
-}
-
-input, select, textarea {
-  height: 44px;
-  padding: 0 var(--space-sm);
+input {
+  margin-top: var(--space-xs);
+  margin-bottom: var(--space-sm);
+  height: 45px;
+  padding: var(--space-xs) var(--space-sm);
   border: 1px solid var(--border);
-  border-radius: var(--radius-sm);
-  background: var(--surface);
-  color: var(--text);
-  box-shadow: var(--shadow-sm);
-  transition: border-color .18s ease, box-shadow .18s ease, background-color .18s ease;
+  border-radius: var(--radius);
 }
 
-input::placeholder,
-textarea::placeholder { color: color-mix(in oklab, var(--muted) 80%, var(--text)); }
-
 input:focus {
-  border-color: var(--primary-600);
+  border-color: var(--primary);
   outline: 0;
-  box-shadow: 0 0 0 4px color-mix(in oklab, var(--primary) 20%, transparent);
 }
 
-.error {
-  color: var(--error);
-  margin: var(--space-2xs) 0;
+label {
+  color: var(--grey);
+  text-transform: uppercase;
+  font-size: 80%;
 }
 
-.error:empty { display: none; }
-
-/* Native UI controls pick up brand via accent-color */
-input[type="checkbox"],
-input[type="radio"],
-input[type="range"],
-progress { accent-color: var(--primary); }
-
-/* ==========================================================================
-   Buttons
-   ========================================================================== */
-
-button,
-.btn {
-  display: inline-flex;
-  align-items: center;
-  justify-content: center;
-  gap: 8px;
-  font-weight: 700;
+button {
+  font-weight: bold;
   background-color: var(--primary);
   color: var(--white);
   height: 40px;
-  padding: 0 var(--space-md);
+  padding: var(--space-xs);
   border: 0;
-  border-radius: var(--radius-sm);
+  border-radius: var(--radius);
   text-transform: uppercase;
-  min-width: 110px;
+  min-width: 100px;
   margin: var(--space-sm) 0;
-  box-shadow: var(--shadow-sm);
-  transition: filter .12s ease, transform .12s ease, background-color .12s ease;
 }
 
-button:hover,
-.btn:hover { filter: brightness(110%); cursor: pointer; }
-
-button:active,
-.btn:active { transform: translateY(1px); }
-
-button:focus-visible,
-.btn:focus-visible { outline: var(--focus); }
-
-.button-alt,
-.btn-ghost {
+.button-alt {
   background-color: transparent;
   color: var(--primary);
-  border: 1px solid color-mix(in oklab, var(--primary) 40%, var(--border));
-  box-shadow: none;
 }
 
-.btn-icon {
-  min-width: auto;
-  width: 40px; height: 40px;
-  padding: 0;
-  border-radius: 50%;
+button:hover {
+  filter: brightness(115%);
+  cursor: pointer;
 }
 
-/* ==========================================================================
-   Login Page
-   ========================================================================== */
+button:focus {
+  outline: none;
+  border: 3px solid var(--grey);
+}
 
-.login-page {
-  display: flex;
-  height: 100%;
-  align-items: center;
-  justify-content: center;
-  background:
-    radial-gradient(800px 500px at 20% -10%, color-mix(in oklab, var(--primary) 30%, transparent), transparent 60%),
-    radial-gradient(800px 500px at 120% 10%, color-mix(in oklab, var(--primary-600) 20%, transparent), transparent 55%),
-    linear-gradient(var(--primary), var(--primary-600));
+.error {
+  color: var(--error);
+  margin: var(--space-xs) 0;
 }
 
-.login-container {
-  flex: auto;
-  max-width: 520px;
-  max-height: 100%;
-  overflow: auto;
-  padding: var(--space-sm);
+.error:empty {
+  display: none;
 }
 
+/* START: Dark Mode specific button style */
+.dashboard-header button#theme-toggle {
+    background: transparent;
+    color: var(--grey);
+    padding: var(--space-xs);
+    margin: 0;
+    border: none;
+    height: 40px;
+    width: 40px;
+    display: inline-flex;
+    justify-content: center;
+    align-items: center;
+}
+.dashboard-header button#theme-toggle:hover {
+    filter: none;
+    background-color: rgba(255, 255, 255, 0.1);
+}
+
+.dark-mode .dashboard-header {
+    background-color: var(--background-accent);
+}
+.dark-mode .dashboard-header button {
+    border-color: var(--primary);
+}
+/* END: Dark Mode specific button style */
+
+/* ------------------------------------------------------------------------ */
+/* Login page */
+/* ------------------------------------------------------------------------ */
+
 .login-title {
   font-size: 2rem;
-  font-weight: 800;
+  font-weight: bold;
   color: var(--white);
   margin: var(--space-md);
-  text-align: center;
 }
 
 .login-logo {
@@ -269,14 +169,27 @@ button:focus-visible,
   vertical-align: middle;
 }
 
+.login-page {
+  display: flex;
+  height: 100%;
+  align-items: center;
+  justify-content: center;
+  background: linear-gradient(var(--primary), var(--primary-light));
+}
+
+.login-container {
+  flex: auto;
+  max-width: 480px;
+  max-height: 100%;
+  overflow: auto;
+}
+
 .login-content {
-  background-color: var(--surface);
-  padding: var(--space-md);
-  border-radius: var(--radius);
-  box-shadow: var(--shadow-md);
-  border: 1px solid var(--border);
+  background-color: var(--white); /* Now uses variable for easy dark mode switch */
+  padding: var(--space-sm);
 }
 
+
 .login-separator {
   position: relative;
   top: 0.5em;
@@ -287,15 +200,14 @@ button:focus-visible,
 
 .login-separator > span {
   position: relative;
-  top: -0.6em;
-  background-color: var(--surface);
-  padding: 0 var(--space-sm);
-  color: var(--muted);
+  top: -0.5em;
+  background-color: var(--white); /* Use var(--white) here as well */
+  padding: var(--space-sm);
 }
 
-/* ==========================================================================
-   Dashboard
-   ========================================================================== */
+/* ------------------------------------------------------------------------ */
+/* Dashboard page */
+/* ------------------------------------------------------------------------ */
 
 .dashboard-page {
   display: flex;
@@ -303,35 +215,24 @@ button:focus-visible,
   flex-direction: column;
 }
 
-/* Make content responsive to its own width (container queries) */
-.dashboard-content {
-  width: 100%;
-  max-width: 960px;
-  align-self: center;
-  padding: var(--space-sm);
-  container-type: inline-size;
-  container-name: dash;
-}
-
 .dashboard-header {
-  background-color: var(--accent);
-  padding: var(--space-xs) var(--space-sm);
-  display: flex;
-  align-items: center;
-  justify-content: space-between;
+  background-color: var(--accent); /* Used to be --grey, switched to --accent for a better variable fit */
+  padding: 0 var(--space-sm)
 }
 
 .dashboard-header button {
-  border: 1px solid color-mix(in oklab, var(--white) 35%, transparent);
+  float: right;
+  border: 1px solid;
   background-color: transparent;
-  color: var(--white);
+  color: var(--white); /* Ensure buttons are visible in dark header */
 }
 
 .dashboard-title {
   font-size: 1.5rem;
-  font-weight: 800;
+  font-weight: bold;
   color: var(--white);
-  margin: 0 var(--space-sm);
+  vertical-align: middle;
+  margin: 0 var(--space-sm)
 }
 
 .dashboard-logo {
@@ -341,22 +242,19 @@ button:focus-visible,
 }
 
 .balance {
-  background: radial-gradient(circle at center, var(--primary), var(--primary-600));
+  background: radial-gradient(circle at center, var(--primary), var(--primary-light));
   text-align: center;
-  padding: var(--space-md) var(--space-sm);
 }
 
 .balance > div {
   color: var(--white);
-  padding-top: var(--space-2xs);
+  padding-top: var(--space-xs);
   text-transform: uppercase;
-  letter-spacing: .08em;
 }
 
 .balance > span {
   color: var(--white);
-  font-size: clamp(2rem, 5vw, 3rem);
-  font-weight: 800;
+  font-size: 3rem;
 }
 
 .transactions-title {
@@ -365,9 +263,8 @@ button:focus-visible,
   align-items: center;
   padding: 0 var(--space-sm);
   color: var(--accent);
-  font-weight: 800;
-  font-size: 1.25rem;
-  gap: var(--space-sm);
+  font-weight: bold;
+  font-size: 1.5rem;
 }
 
 .transactions-title > div {
@@ -376,30 +273,21 @@ button:focus-visible,
   white-space: nowrap;
 }
 
-/* ==========================================================================
-   Transactions Table
-   ========================================================================== */
-
 .transactions-table {
   width: 100%;
-  font-size: 1.05rem;
+  font-size: 1.2rem;
   padding: var(--space-sm);
   margin: 0;
   border-spacing: 0;
-  background-color: var(--surface);
-  border: 1px solid var(--border);
-  border-radius: var(--radius);
-  box-shadow: var(--shadow-sm);
+  background-color: var(--background);
 }
 
 .transactions-table thead th {
   border-bottom: 1px solid var(--border);
-  color: var(--muted);
-  font-weight: 700;
 }
 
 .transactions-table tr:nth-child(even) {
-  background-color: var(--surface-2);
+  background-color: var(--background-accent);
 }
 
 .transactions-table td,
@@ -410,6 +298,7 @@ button:focus-visible,
 
 .transactions-table td:first-child,
 .transactions-table th:first-child {
+  /* Make first column use the minimum width */
   width: 1%;
   white-space: nowrap;
 }
@@ -419,90 +308,88 @@ button:focus-visible,
   text-align: right;
 }
 
-/* Condense table in narrow containers */
-@container dash (width < 520px) {
-  .transactions-table {
-    font-size: 1rem;
-    border-radius: var(--radius-sm);
-    padding: var(--space-xs);
-  }
-}
-
-/* ==========================================================================
-   Dialog (Modal)
-   ========================================================================== */
-
 .dialog {
   display: none;
-  position: fixed;
-  inset: 0;
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  left: 0;
+  top: 0;
   overflow: auto;
-  background-color: rgba(0,0,0,.45);
+  background-color: rgba(0,0,0,0.4);
+  animation: slideFromTop 0.3s ease-in-out;
   justify-content: center;
   align-items: flex-start;
-  padding: var(--space-sm);
-  z-index: 1000;
 }
 
-.dialog.show { display: flex; }
+.dialog.show {
+  display: flex;
+}
+
+@keyframes slideFromTop {
+  from {
+    top: -300px;
+    opacity: 0;
+  }
+  to {
+    top: 0;
+    opacity: 1;
+  }
+}
 
 .dialog-content {
   flex: auto;
-  background-color: var(--surface);
-  color: var(--text);
-  max-width: 520px;
+  background-color: var(--white);
+  max-width: 480px;
   max-height: 100%;
-  padding: var(--space-md);
-  border-radius: var(--radius);
-  border: 1px solid var(--border);
-  box-shadow: var(--shadow-md);
-  margin-top: var(--space-xl);
-  transform: translateY(-8px);
-  animation: dialogIn .25s ease-out both;
+  padding: var(--space-sm);
 }
 
-@keyframes dialogIn {
-  from { opacity: 0; transform: translateY(-14px); }
-  to   { opacity: 1; transform: translateY(0); }
+.dialog-buttons {
+  text-align: right;
 }
 
-.dialog-buttons {
-  display: flex;
-  justify-content: flex-end;
-  gap: var(--space-sm);
+/* ------------------------------------------------------------------------ */
+/* Utilities */
+/* ------------------------------------------------------------------------ */
+
+.text-center {
+  text-align: center;
 }
 
-/* ==========================================================================
-   Responsive
-   ========================================================================== */
+.hide-xs {
+  display: none;
+}
+
+/* ------------------------------------------------------------------------ */
+/* Responsive adaptations */
+/* ------------------------------------------------------------------------ */
+
+@media only screen and (min-width: 480px) {
+  .hide-xs {
+    display: initial;
+  }
 
-@media (min-width: 480px) {
   .login-content,
   .dialog-content {
     border-radius: var(--radius);
   }
-}
 
-@media (min-width: 768px) {
-  .dashboard-content {
-    max-width: 900px;
+  .dialog-content {
+    margin-top: var(--space-xl);
   }
 }
 
-/* ==========================================================================
-   Legacy compatibility mappings (existing class names)
-   ========================================================================== */
-
-.button-alt { /* keep existing alias */
-  background-color: transparent;
-  color: var(--primary);
-  border: 1px solid color-mix(in oklab, var(--primary) 40%, var(--border));
-}
+@media only screen and (min-width: 768px) {
+  .transactions-table {
+    border-radius: var(--radius);
+  }
 
-/* Keep original variable names for backward compatibility where possible */
-:root {
-  --space-xs: var(--space-xs);
-  --space-sm: var(--space-sm);
-  --space-md: var(--space-md);
-  --space-xl: var(--space-xl);
+  .dashboard-content {
+    width: 100%;
+    max-width: 768px;
+    align-self: center;
+  }
 }