/* Scroll to top button styles */
        #scrollToTop {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: #3498db;
            color: white;
            border: none;
            border-radius: 50%;
            cursor: pointer;
            font-size: 20px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.2);
            transition: all 0.3s ease;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
        }

        /* Show button when scrolled */
        #scrollToTop.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        /* Hover effects */
        #scrollToTop:hover {
            background: #2980b9;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(0,0,0,0.3);
        }

        /* Active state */
        #scrollToTop:active {
            transform: translateY(0);
        }

        /* Alternative square button style */
        .square-btn {
            border-radius: 8px !important;
            width: 45px;
            height: 45px;
        }

        /* Alternative with icon */
        .arrow-up {
            font-size: 16px;
        }

        /* Smooth scroll behavior */
        html {
            scroll-behavior: smooth;
        }

      




        
        /* fifth-container */