.fade-in {
            animation: fadeIn 0.5s ease-in-out forwards;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .glass-nav {
            background: rgba(250, 250, 249, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }
        .service-tab.active {
            border-bottom: 2px solid #1d5b67;
            color: #113e48;
            font-weight: 700;
        }
        .service-tab {
            color: #78716c;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        /* Loader for Zip Download */
        .loader {
            border: 3px solid #f3f3f3;
            border-radius: 50%;
            border-top: 3px solid #113e48;
            width: 20px;
            height: 20px;
            -webkit-animation: spin 1s linear infinite; /* Safari */
            animation: spin 1s linear infinite;
            display: inline-block;
            vertical-align: middle;
            margin-right: 8px;
        }
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }