Mega Menu Navigation Bar AI Prompt Result

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Responsive Mega Menu</title>
    
    <style>
        /* --- Global Styles & Resets --- */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
            line-height: 1.6;
            background-color: #f4f4f4;
            color: #333;
        }

.container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }

img {
            max-width: 100%;
            display: block;
        }

a {
            text-decoration: none;
            color: #007bff;
        }

ul {
            list-style: none;
        }

/* --- Header & Navigation Bar --- */
        .site-header {
            background-color: #ffffff;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
            position: relative; /* Needed for mega menu positioning */
            z-index: 1000;
        }

.navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }

.nav-logo {
            font-size: 1.5rem;
            font-weight: bold;
            color: #333;
        }

.nav-menu {
            display: flex;
            gap: 1rem;
        }

.nav-menu a {
            display: block;
            padding: 1rem;
            color: #555;
            font-weight: 500;
            transition: color 0.3s ease, background-color 0.3s ease;
        }

.nav-menu a:hover,
        .nav-menu a:focus {
            color: #0056b3;
            background-color: #f0f0f0;
        }

/* --- Mega Menu (Desktop) --- */
        .menu-item-has-children {
            position: relative; /* Parent for absolute positioning */
        }

.mega-menu {
            /* Hiding the menu by default */
            visibility: hidden;
            opacity: 0;
            transform: translateY(10px);
            transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
            
            /* Positioning and Layout */
            position: absolute;
            top: 100%;
            left: 50%; /* Center relative to the parent li */
            transform: translateX(-50%);
            width: 800px;
            max-width: 100vw;
            background-color: #fff;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
            border-radius: 8px;
            padding: 2rem;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

/* Show the menu on hover or when a child element has focus */
        .menu-item-has-children:hover > .mega-menu,
        .menu-item-has-children:focus-within > .mega-menu {
            visibility: visible;
            opacity: 1;
            transform: translateY(0) translateX(-50%);
        }

/* Note on aria-expanded: We can't change the attribute with CSS.
           JavaScript would be needed to toggle aria-expanded="true" on hover/focus.
           However, :focus-within provides the required keyboard functionality. */

.mega-menu-column {
            display: flex;
            flex-direction: column;
        }

.mega-menu-column h3 {
            font-size: 1.1rem;
            color: #333;
            margin-bottom: 1rem;
            border-bottom: 2px solid #007bff;
            padding-bottom: 0.5rem;
        }

.mega-menu-column ul li a {
            padding: 0.5rem 0; /* Simpler padding for mega menu links */
        }

.mega-menu-column ul li a:hover,
        .mega-menu-column ul li a:focus {
            background-color: transparent; /* Override main nav hover */
            color: #0056b3;
            text-decoration: underline;
        }

/* Featured Product Column Styles */
        .featured-product {
            background-color: #f9f9f9;
            padding: 1.5rem;
            border-radius: 6px;
            text-align: center;
        }

.featured-product img {
            margin-bottom: 1rem;
            border-radius: 4px;
        }

.featured-product h4 {
            margin-bottom: 0.5rem;
            font-size: 1.1rem;
        }

.featured-product p {
            font-size: 0.9rem;
            color: #666;
            margin-bottom: 1.5rem;
        }

.btn-featured {
            background-color: #007bff;
            color: #fff !important; /* Override link color */
            padding: 0.75rem 1.5rem !important; /* Override link padding */
            border-radius: 5px;
            transition: background-color 0.3s ease;
        }

.btn-featured:hover,
        .btn-featured:focus {
            background-color: #0056b3 !important;
            text-decoration: none !important;
        }

/* --- Mobile Menu Styles (Hamburger) --- */
        .nav-toggle,
        .nav-toggle-label {
            display: none; /* Hide on desktop */
        }

/* Main Content styling for demonstration */
        main.container {
            padding-top: 2rem;
            padding-bottom: 2rem;
        }

/* --- Responsive Styles (Tablet & Mobile) --- */
        @media (max-width: 992px) {
            .mega-menu {
                width: 600px;
                grid-template-columns: repeat(2, 1fr);
            }
            .featured-product {
                grid-column: span 2; /* Make featured take full width */
            }
        }

@media (max-width: 768px) {
            /* Show hamburger toggle */
            .nav-toggle-label {
                display: flex;
                flex-direction: column;
                justify-content: space-around;
                width: 30px;
                height: 25px;
                cursor: pointer;
                z-index: 1001;
            }
            .nav-toggle-label span {
                display: block;
                width: 100%;
                height: 3px;
                background-color: #333;
                border-radius: 3px;
                transition: transform 0.3s ease, opacity 0.3s ease;
            }
            
            /* Hide checkbox */
            .nav-toggle {
                display: none;
            }
            
            /* Hide the desktop menu and prepare for mobile layout */
            .nav-menu {
                position: fixed;
                top: 0;
                right: 0;
                width: 80%;
                max-width: 320px;
                height: 100vh;
                background-color: #fff;
                flex-direction: column;
                align-items: flex-start;
                padding: 4rem 2rem 2rem;
                gap: 0;
                transform: translateX(100%);
                transition: transform 0.3s ease-in-out;
                box-shadow: -5px 0 15px rgba(0,0,0,0.1);
            }
            
            /* Show the mobile menu when checkbox is checked */
            .nav-toggle:checked ~ .nav-menu {
                transform: translateX(0);
            }
            
            /* Animate hamburger icon to an "X" */
            .nav-toggle:checked ~ .nav-toggle-label span:nth-child(1) {
                transform: translateY(9px) rotate(45deg);
            }
            .nav-toggle:checked ~ .nav-toggle-label span:nth-child(2) {
                opacity: 0;
            }
            .nav-toggle:checked ~ .nav-toggle-label span:nth-child(3) {
                transform: translateY(-9px) rotate(-45deg);
            }
            
            /* Reset mega menu to a simple dropdown on mobile */
            .mega-menu {
                position: static;
                width: 100%;
                transform: none !important; /* Override desktop transform */
                opacity: 1;
                visibility: visible;
                background-color: transparent;
                box-shadow: none;
                padding: 0 0 0 1rem;
                display: none; /* Hide sub-menu by default on mobile */
                grid-template-columns: 1fr; /* Single column layout */
            }
            
            /* Show sub-menu on focus (tap on mobile) */
            .menu-item-has-children:focus-within > .mega-menu {
                display: grid; /* Show as a grid to respect gap */
            }
            
            .mega-menu-column {
                padding: 0;
            }
            
            .featured-product {
                display: none; /* Hide featured product on mobile for simplicity */
            }
        }
    </style>
</head>
<body>

<header class="site-header">
        <div class="container">
            <nav class="navbar">
                
                <a href="#" class="nav-logo">CompanyLogo</a>

<input type="checkbox" id="nav-toggle" class="nav-toggle">
                <label for="nav-toggle" class="nav-toggle-label" aria-label="Open menu">
                    <span></span>
                    <span></span>
                    <span></span>
                </label>

<ul class="nav-menu">
                    <li><a href="#">Home</a></li>
                    
                    
                    <li class="menu-item-has-children">
                        <a href="#" aria-haspopup="true" aria-expanded="false">Products</a>
                        
                        
                        <div class="mega-menu">
                            <div class="mega-menu-column">
                                <h3>For Individuals</h3>
                                <ul>
                                    <li><a href="#">Personal Plan</a></li>
                                    <li><a href="#">Creator Suite</a></li>
                                    <li><a href="#">Individual Pro</a></li>
                                </ul>
                            </div>
                            <div class="mega-menu-column">
                                <h3>For Teams</h3>
                                <ul>
                                    <li><a href="#">Team Starter</a></li>
                                    <li><a href="#">Business Class</a></li>
                                    <li><a href="#">Enterprise Solution</a></li>
                                </ul>
                            </div>
                            <div class="mega-menu-column featured-product">
                                <img src="https://via.placeholder.com/250x150.png?text=Featured+Product" alt="A placeholder image for a featured product.">
                                <h4>Spotlight: Product X</h4>
                                <p>A groundbreaking new tool to revolutionize your team's productivity.</p>
                                <a href="#" class="btn-featured">Learn More</a>
                            </div>
                        </div>
                    </li>

<li><a href="#">Solutions</a></li>
                    <li><a href="#">Contact</a></li>
                </ul>
            </nav>
        </div>
    </header>

<main class="container">
        <h1>Page Content</h1>
        <p>This is the main content area of the page, demonstrating that the mega menu appears over the content without pushing it down.</p>
        <p>Try resizing your browser window to see the mobile "hamburger" menu appear.</p>
        <p>Use the Tab key to navigate the menu for an accessible experience.</p>
    </main>

</body>
</html>