* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background-color: #f5f5f5;
        }
        
        /* Header Styles */
        header {
            background-color: #fff;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }
        
        .top-bar {
            display: flex;
            justify-content: space-between;
            padding: 10px 5%;
            background-color: #333;
            color: #fff;
            font-size: 14px;
        }
        
        .contact-info span {
            margin-right: 15px;
        }
        
        .social-icons a {
            color: #fff;
            margin-left: 10px;
            text-decoration: none;
        }
        
        .main-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 5%;
        }
        
        .logo img {
            height: 100px;
            width: 300px;
        }
        
        .search-bar {
            display: flex;
            flex: 1;
            max-width: 500px;
            margin: 0 20px;
        }
        
        .search-bar input {
            flex: 1;
            padding: 10px 15px;
            border: 1px solid #ddd;
            border-right: none;
            border-radius: 4px 0 0 4px;
            font-size: 14px;
        }
        
        .search-bar button {
            background-color: #383838;
            color: white;
            border: none;
            padding: 0 15px;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
        }
        
        .header-actions {
            display: flex;
            align-items: center;
        }
        
        .action-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            margin-left: 20px;
            cursor: pointer;
        }
        
        .action-item i {
            font-size: 20px;
            margin-bottom: 4px;
            color: #333;
        }
        
        .action-item span {
            font-size: 12px;
            color: #666;
        }
        
        .cart-count {
            position: absolute;
            top: -8px;
            right: -8px;
            background-color: #e74c3c;
            color: white;
            font-size: 10px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        nav {
            background-color: #383838;
            color: white;
        }
        
        .nav-container {
            display: flex;
            align-items: center;
            padding: 0 5%;
        }
        
        .categories {
            position: relative;
        }
        
        .category-btn {
            background-color: #383838;
            padding: 12px 20px;
            display: flex;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
        }
        
        .category-btn i {
            margin-right: 8px;
        }
        
        .main-menu {
            display: flex;
            list-style: none;
            margin-left: 15px;
        }
        
        .main-menu li {
            padding: 12px 15px;
        }
        
        .main-menu a {
            color: white;
            text-decoration: none;
            font-weight: 500;
        }
        
        /* Lab Practice Section Styles */
        .lab-container {
            max-width: 1200px;
            margin: 30px auto;
            padding: 0 15px;
        }
        
        .lab-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }
        
        .lab-card {
            background-color: #fff;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            overflow: hidden;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        
        .lab-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.15);
        }
        
        .lab-title {
            padding: 15px;
            border-bottom: 1px solid #eee;
        }
        
        .lab-title h3 {
            margin-bottom: 5px;
            color: #333;
            font-size: 18px;
        }
        
        .lab-links {
            padding: 15px;
        }
        
        .lab-links a {
            display: block;
            color:#383838;
            text-decoration: none;
            margin-bottom: 8px;
            transition: color 0.2s;
        }
        
        .lab-links a:hover {
            color: #383838;
            text-decoration: underline;
        }
        
        .view-details-btn {
            display: block;
            background-color: #383838;
            color: white;
            text-align: center;
            padding: 12px;
            text-decoration: none;
            font-weight: 500;
            transition: background-color 0.2s;
        }
        
        .view-details-btn:hover {
            background-color: #383838;
        }
        
        /* Footer Styles */
        .footer {
            background-color: #333;
            color: #fff;
            padding: 40px 0 0;
            margin-top: 50px;
        }
        
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            padding: 0 15px;
        }
        
        .footer-section {
            flex: 1;
            margin-right: 30px;
        }
        
        .footer-section h4 {
            font-size: 18px;
            margin-bottom: 15px;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-section h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 50px;
            height: 2px;
            background-color: #383838;
        }
        
        .footer-section ul {
            list-style: none;
        }
        
        .footer-section ul li {
            margin-bottom: 10px;
            font-size: 14px;
        }
        
        .footer-section ul.socials li a {
            color: #fff;
            text-decoration: none;
            transition: color 0.2s;
        }
        
        .footer-section ul.socials li a:hover {
            color: #383838;
        }
        
        .footer-bottom {
            background-color: #222;
            padding: 15px 0;
            text-align: center;
            margin-top: 30px;
            font-size: 14px;
        }
        
        @media (max-width: 992px) {
            .lab-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .main-header {
                flex-wrap: wrap;
            }
            
            .search-bar {
                order: 3;
                max-width: 100%;
                margin: 15px 0 0;
            }
        }
        
        @media (max-width: 768px) {
            .footer-container {
                flex-direction: column;
            }
            
            .footer-section {
                margin-bottom: 30px;
            }
            
            .lab-grid {
                grid-template-columns: 1fr;
            }
            
            .main-menu {
                display: none;
            }
        }