// Check if functions.php exists before requiring
$functions_file = SITE_ROOT . '/includes/functions.php';
if (file_exists($functions_file)) {
    require_once $functions_file;
} else {
    // Create a simple fallback if file doesn't exist
    error_log("Functions file not found: " . $functions_file);
    
    // Define basic functions if file is missing
    if (!function_exists('sanitize_input')) {
        function sanitize_input($data) {
            if (is_array($data)) {
                return array_map('sanitize_input', $data);
            }
            $data = trim($data);
            $data = stripslashes($data);
            $data = htmlspecialchars($data, ENT_QUOTES | ENT_HTML5, 'UTF-8');
            return $data;
        }
    }
    
    if (!function_exists('generate_csrf_token')) {
        function generate_csrf_token() {
            if (empty($_SESSION['csrf_token'])) {
                $_SESSION['csrf_token'] = bin2hex(random_bytes(32));
                $_SESSION['csrf_token_time'] = time();
            }
            return $_SESSION['csrf_token'];
        }
    }
}
<!-- Notification Messages -->



<!-- ============================================
    HERO SECTION
============================================= -->
<section class="hero">
    <div class="container">
        <div class="hero-content">
            <div class="hero-main">
                <h1>Shop Together, Save More!</h1>
                <p>Join group buying and get amazing discounts. Invite friends and save up to 90%! Free shipping on orders above Rs 2000.</p>
                <div class="hero-buttons">
                    <a href="#flash-sale" class="btn btn-primary">
                        <i class="fas fa-bolt"></i> Flash Sale
                    </a>
                    <a href="#group-buy" class="btn btn-outline">
                        <i class="fas fa-users"></i> Group Buy Now
                    </a>
                    <a href="#trending" class="btn btn-outline">
                        <i class="fas fa-fire"></i> Trending
                    </a>
                </div>
            </div>
            <div class="hero-stats">
                <div class="stat-card">
                    <div class="stat-number">5M+</div>
                    <div class="stat-label">Happy Customers</div>
                </div>
                <div class="stat-card">
                    <div class="stat-number">10K+</div>
                    <div class="stat-label">Products</div>
                </div>
                <div class="stat-card">
                    <div class="stat-number">90%</div>
                    <div class="stat-label">Max Savings</div>
                </div>
                <div class="stat-card">
                    <div class="stat-number">24/7</div>
                    <div class="stat-label">Support</div>
                </div>
            </div>
        </div>
    </div>
</section>

<!-- ============================================
    FEATURED CATEGORIES
============================================= -->
<section class="section section-sm">
    <div class="container">
        <div class="section-title">
            <h2>Shop By Category</h2>
            <p>Explore our wide range of product categories</p>
        </div>
        
        <div class="row">
                    </div>
        
        <div class="text-center mt-4">
            <a href="categories.php" class="btn btn-outline">
                <i class="fas fa-th-list"></i> View All Categories
            </a>
        </div>
    </div>
</section>

<!-- ============================================
    FLASH SALE SECTION
============================================= -->
<section class="section" id="flash-sale">
    <div class="container">
        <div class="flash-sale-header">
            <div class="flash-title">
                <i class="fas fa-bolt flash-icon"></i>
                <span>FLASH SALE</span>
                <small>Ends in:</small>
            </div>
            <div class="countdown" data-end-time="2026-03-03 13:27:10">
                <div class="countdown-item">
                    <div class="countdown-number" id="hours">24</div>
                    <div class="countdown-label">Hours</div>
                </div>
                <div class="countdown-item">
                    <div class="countdown-number" id="minutes">00</div>
                    <div class="countdown-label">Minutes</div>
                </div>
                <div class="countdown-item">
                    <div class="countdown-number" id="seconds">00</div>
                    <div class="countdown-label">Seconds</div>
                </div>
            </div>
            <a href="flash-sale.php" class="btn btn-outline btn-sm" style="color: white; border-color: white;">
                View All <i class="fas fa-arrow-right"></i>
            </a>
        </div>
        <div class="products-grid">
                                    <div class="product-card">
                <div class="product-image">
                    <a href="product.php?slug=iphone-15-pro-max">
                        <img src="