.popup-container {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.7);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
        }

        .popup-container.active {
            opacity: 1;
            visibility: visible;
        }

        .popup {
            background-color: var(--glass-color);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-radius: 15px;
            padding: 2rem;
            max-width: 500px;
            width: 90%;
            text-align: center;
            box-shadow: var(--glass-shadow);
            transform: translateY(-50px);
            transition: var(--transition);
        }

        .popup-container.active .popup {
            transform: translateY(0);
        }

        .popup-title {
            font-size: 1.8rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--text-color);
        }

        .popup-message {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
        }

        .popup-btn {
            padding: 0.8rem 1.8rem;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background-color: var(--accent-color);
            color: white;
        }

        .popup-btn:hover {
            background-color: var(--accent-hover);
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(255, 77, 77, 0.4);
        }

        /* Responsive Styles */
        @media (max-width: 480px) {
            .popup-title {
                font-size: 1.5rem;
            }

            .popup-message {
                font-size: 1rem;
            }

            .popup-btn {
                width: 100%;
                justify-content: center;
            }
        }