diff --git a/themes/retro/assets/css/theme.css b/themes/retro/assets/css/theme.css
new file mode 100644
index 0000000..6c3e10e
--- /dev/null
+++ b/themes/retro/assets/css/theme.css
@@ -0,0 +1,180 @@
+/* Retro Theme Styles */
+
+:root {
+    --primary-color: #4361ee;
+    --secondary-color: #3f37c9;
+    --accent-color: #4895ef;
+    --light-color: #f8f9fa;
+    --dark-color: #212529;
+    --success-color: #4bb543;
+    --warning-color: #f9c74f;
+    --danger-color: #ef476f;
+    --border-radius: 0.5rem;
+}
+
+/* General Styles */
+body.modern-theme {
+    background-color: #f5f7fa;
+    color: #333;
+    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
+}
+
+/* Navigation */
+.menu-container {
+    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
+    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
+    padding: 0.5rem 1rem;
+}
+
+.menu-left {
+    display: flex;
+    align-items: center;
+}
+
+.menu-right {
+    display: flex;
+    align-items: center;
+    justify-content: flex-end;
+}
+
+/* Cards */
+.card {
+    border: none;
+    border-radius: var(--border-radius);
+    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
+    transition: transform 0.2s, box-shadow 0.2s;
+    margin-bottom: 1.5rem;
+}
+
+.card:hover {
+    transform: translateY(-2px);
+    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
+}
+
+.card-header {
+    background-color: white;
+    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
+    font-weight: 600;
+}
+
+/* Buttons */
+.btn-primary {
+    background-color: var(--primary-color);
+    border-color: var(--primary-color);
+    border-radius: var(--border-radius);
+    padding: 0.375rem 1rem;
+    font-weight: 500;
+    transition: all 0.2s;
+}
+
+.btn-primary:hover {
+    background-color: var(--secondary-color);
+    border-color: var(--secondary-color);
+    transform: translateY(-1px);
+}
+
+/* Forms */
+.form-control {
+    border-radius: var(--border-radius);
+    border: 1px solid #e1e5eb;
+    padding: 0.5rem 0.75rem;
+}
+
+.form-control:focus {
+    border-color: var(--accent-color);
+    box-shadow: 0 0 0 0.2rem rgba(67, 97, 238, 0.25);
+}
+
+/* Tables */
+.table {
+    background-color: white;
+    border-radius: var(--border-radius);
+    overflow: hidden;
+}
+
+.table thead th {
+    background-color: #f8f9fa;
+    border-bottom: 2px solid #e9ecef;
+    font-weight: 600;
+    text-transform: uppercase;
+    font-size: 0.75rem;
+    letter-spacing: 0.5px;
+}
+
+/* Alerts */
+.alert {
+    border-radius: var(--border-radius);
+    border: none;
+    padding: 1rem 1.25rem;
+}
+
+.alert-success {
+    background-color: rgba(75, 181, 67, 0.1);
+    color: var(--success-color);
+}
+
+.alert-warning {
+    background-color: rgba(249, 199, 79, 0.1);
+    color: #c9a227;
+}
+
+.alert-danger {
+    background-color: rgba(239, 71, 111, 0.1);
+    color: var(--danger-color);
+}
+
+/* Theme Switcher */
+.theme-switcher {
+    margin-left: 1rem;
+}
+
+.theme-switcher .dropdown-toggle {
+    background: rgba(255, 255, 255, 0.1);
+    border: none;
+    border-radius: 50%;
+    width: 36px;
+    height: 36px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    color: white;
+    transition: all 0.2s;
+}
+
+.theme-switcher .dropdown-toggle:hover {
+    background: rgba(255, 255, 255, 0.2);
+}
+
+.theme-option {
+    display: flex;
+    align-items: center;
+    padding: 0.5rem 1rem;
+    cursor: pointer;
+    transition: background-color 0.2s;
+}
+
+.theme-option:hover {
+    background-color: rgba(0, 0, 0, 0.05);
+}
+
+.theme-preview {
+    width: 20px;
+    height: 20px;
+    border-radius: 4px;
+    margin-right: 10px;
+    border: 1px solid rgba(0, 0, 0, 0.1);
+}
+
+/* Responsive adjustments */
+@media (max-width: 768px) {
+    .menu-container {
+        flex-direction: column;
+        padding: 0.5rem;
+    }
+
+    .menu-left, .menu-right {
+        width: 100%;
+        justify-content: space-between;
+        padding: 0.25rem 0;
+    }
+}
diff --git a/themes/retro/assets/js/theme.js b/themes/retro/assets/js/theme.js
new file mode 100644
index 0000000..81f1064
--- /dev/null
+++ b/themes/retro/assets/js/theme.js
@@ -0,0 +1,81 @@
+/**
+ * Retro Theme JavaScript
+ * 
+ * This file contains theme-specific JavaScript functionality.
+ */
+
+document.addEventListener('DOMContentLoaded', function() {
+    // Initialize tooltips
+    $('[data-toggle="tooltip"]').tooltip();
+    
+    // Initialize popovers
+    $('[data-toggle="popover"]').popover();
+    
+    // Add smooth scrolling to anchor links
+    $('a[href^="#"]').on('click', function(e) {
+        if (this.hash !== '') {
+            e.preventDefault();
+            
+            const hash = this.hash;
+            $('html, body').animate(
+                { scrollTop: $(hash).offset().top - 20 },
+                800
+            );
+        }
+    });
+    
+    // Handle form validation feedback
+    $('form.needs-validation').on('submit', function(event) {
+        if (this.checkValidity() === false) {
+            event.preventDefault();
+            event.stopPropagation();
+        }
+        $(this).addClass('was-validated');
+    });
+    
+    // Add active class to current nav item
+    const currentPage = window.location.pathname.split('/').pop() || 'index.php';
+    $('.nav-link').each(function() {
+        if ($(this).attr('href') === currentPage) {
+            $(this).addClass('active');
+            $(this).closest('.nav-item').addClass('active');
+        }
+    });
+    
+    // Handle sidebar toggle
+    const sidebarToggle = document.querySelector('.sidebar-toggle');
+    if (sidebarToggle) {
+        sidebarToggle.addEventListener('click', function() {
+            document.documentElement.classList.toggle('sidebar-collapsed');
+            localStorage.setItem('sidebarState', 
+                document.documentElement.classList.contains('sidebar-collapsed') ? 'collapsed' : 'expanded');
+        });
+    }
+    
+    // Handle dropdown menus
+    $('.dropdown-menu a.dropdown-toggle').on('click', function(e) {
+        if (!$(this).next().hasClass('show')) {
+            $(this).parents('.dropdown-menu').first().find('.show').removeClass('show');
+        }
+        const $subMenu = $(this).next('.dropdown-menu');
+        $subMenu.toggleClass('show');
+        
+        $(this).parents('li.nav-item.dropdown.show').on('hidden.bs.dropdown', function() {
+            $('.dropdown-submenu .show').removeClass('show');
+        });
+        
+        return false;
+    });
+});
+
+// Theme switcher functionality
+function setTheme(themeName) {
+    localStorage.setItem('theme', themeName);
+    document.documentElement.className = themeName;
+}
+
+// Immediately-invoked function to set the theme on initial load
+(function () {
+    const savedTheme = localStorage.getItem('theme') || 'light-theme';
+    setTheme(savedTheme);
+})();
diff --git a/themes/retro/config.php b/themes/retro/config.php
new file mode 100644
index 0000000..878eda9
--- /dev/null
+++ b/themes/retro/config.php
@@ -0,0 +1,12 @@
+<?php
+
+return [
+    'name' => 'Retro theme',
+    'description' => 'Example theme. An alternative to the default theme for Jilo Web.',
+    'version' => '1.0.0',
+    'author' => 'Lindeas Inc.',
+    'screenshot' => 'screenshot.png',
+    'options' => [
+        // Theme-specific options can be defined here
+    ]
+];
diff --git a/themes/retro/views/page-footer.php b/themes/retro/views/page-footer.php
new file mode 100644
index 0000000..b4a323e
--- /dev/null
+++ b/themes/retro/views/page-footer.php
@@ -0,0 +1,31 @@
+    <!-- Retro Theme Footer -->
+    <footer class="footer mt-5 py-3 bg-light">
+        <div class="container">
+            <div class="row">
+                <div class="col-md-6">
+                    <span class="text-muted">
+                        &copy; <?= date('Y') ?> <?= htmlspecialchars($config['site_name'] ?? '') ?> v<?= htmlspecialchars($config['version'] ?? '') ?>
+                    </span>
+                </div>
+                <div class="col-md-6 text-md-end">
+                    <span class="text-muted">
+                        <?= htmlspecialchars($themeName ?? 'Modern Theme') ?>
+                    </span>
+                </div>
+            </div>
+        </div>
+    </footer>
+
+    <!-- Theme-specific JavaScript -->
+    <script src="<?= \App\Helpers\Theme::asset('js/theme.js') ?>"></script>
+
+    <!-- Global site scripts -->
+    <script src="<?= htmlspecialchars($app_root) ?>static/js/messages.js"></script>
+
+    <?php if ($page === 'graphs'): ?>
+    <script src="<?= htmlspecialchars($app_root) ?>static/js/graphs.js"></script>
+    <?php endif; ?>
+
+    <?php do_hook('footer_scripts'); ?>
+</body>
+</html>
diff --git a/themes/retro/views/page-header.php b/themes/retro/views/page-header.php
new file mode 100644
index 0000000..55de508
--- /dev/null
+++ b/themes/retro/views/page-header.php
@@ -0,0 +1,75 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title><?= htmlspecialchars($config['site_name'] ?? '') ?> - <?= htmlspecialchars($pageTitle ?? 'Dashboard') ?></title>
+
+    <!-- Bootstrap 5.3.3 CSS -->
+    <link rel="stylesheet" type="text/css" href="<?= htmlspecialchars($app_root) ?>static/libs/bootstrap/bootstrap-5.3.3.min.css">
+
+    <!-- Font Awesome -->
+    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.0/css/all.css">
+
+    <!-- Custom CSS -->
+    <link rel="stylesheet" type="text/css" href="<?= htmlspecialchars($app_root) ?>static/css/main.css">
+
+    <!-- Theme-specific CSS -->
+    <link rel="stylesheet" type="text/css" href="<?= \App\Helpers\Theme::asset('css/theme.css') ?>">
+
+    <!-- jQuery -->
+    <script src="<?= htmlspecialchars($app_root) ?>static/libs/jquery/jquery.min.js"></script>
+
+    <!-- Bootstrap JS -->
+    <script src="<?= htmlspecialchars($app_root) ?>static/libs/bootstrap/popper.min.js"></script>
+    <script src="<?= htmlspecialchars($app_root) ?>static/libs/bootstrap/bootstrap-4.0.0.min.js"></script>
+
+    <?php if (Session::getUsername()): ?>
+    <script>
+    // Restore sidebar state before the page is rendered
+    (function() {
+        var savedState = localStorage.getItem('sidebarState');
+        if (savedState === 'collapsed') {
+            document.documentElement.classList.add('sidebar-collapsed');
+        }
+    })();
+    </script>
+    <?php endif; ?>
+
+    <!-- Page-specific CSS -->
+    <?php if ($page === 'logs'): ?>
+    <link rel="stylesheet" type="text/css" href="<?= htmlspecialchars($app_root) ?>static/css/logs.css">
+    <?php endif; ?>
+
+    <?php if ($page === 'profile'): ?>
+    <link rel="stylesheet" type="text/css" href="<?= htmlspecialchars($app_root) ?>static/css/profile.css">
+    <?php endif; ?>
+
+    <?php if ($page === 'agents'): ?>
+    <script src="<?= htmlspecialchars($app_root) ?>static/js/agents.js"></script>
+    <?php endif; ?>
+
+    <?php if ($page === 'graphs'): ?>
+    <script src="<?= htmlspecialchars($app_root) ?>static/libs/chartjs/chart.umd.min.js"></script>
+    <script src="<?= htmlspecialchars($app_root) ?>static/libs/chartjs/moment.min.js"></script>
+    <script src="<?= htmlspecialchars($app_root) ?>static/libs/chartjs/chartjs-adapter-moment.min.js"></script>
+    <script src="<?= htmlspecialchars($app_root) ?>static/libs/chartjs/chartjs-plugin-zoom.min.js"></script>
+    <?php endif; ?>
+
+    <link rel="icon" type="image/x-icon" href="<?= htmlspecialchars($app_root) ?>static/favicon.ico">
+</head>
+
+<body class="modern-theme">
+    <div id="messages-container" class="container-fluid mt-2"></div>
+
+    <?php if (isset($system_messages) && is_array($system_messages)): ?>
+    <div class="container-fluid">
+        <div class="row">
+            <div class="col">
+                <?php foreach ($system_messages as $msg): ?>
+                    <?= Feedback::render($msg['category'], $msg['key'], $msg['custom_message'] ?? null) ?>
+                <?php endforeach; ?>
+            </div>
+        </div>
+    </div>
+    <?php endif; ?>