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    <title>Перенаправлення | Наука КНУ імені Тараса Шевченка</title>
    
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    <style>
        :root {
            --primary-red: #b80000;
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            --text-black: #000000;
            --text-gray: #444444;
            --bg-light: #f9f9f9;
            --bg-toggle: #e9ecef;
            --white: #ffffff;
            --transition: all 0.3s ease;
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        * {
            margin: 0;
            padding: 0;
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        body {
            font-family: 'Montserrat', sans-serif;
            background-color: var(--bg-light);
            color: var(--text-black);
            line-height: 1.6;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
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        /* --- Header --- */
        header {
            background-color: var(--primary-red);
            color: var(--white);
            padding: 1rem 0;
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        .container {
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        .logo-area {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 1.1rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
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        /* --- Main Content --- */
        main {
            flex: 1;
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            margin-bottom: 20px;
            width: 64px;
            height: 64px;
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        h1 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 15px;
            color: var(--primary-red);
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        .lead {
            font-size: 1.1rem;
            color: var(--text-gray);
            margin-bottom: 30px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* --- Switcher / Checker --- */
        .switcher-container {
            margin-bottom: 15px;
            display: flex;
            flex-direction: column;
            align-items: center;
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        .switcher-label {
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--text-gray);
            margin-bottom: 8px;
            font-weight: 600;
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        .toggle-wrapper {
            background-color: var(--bg-toggle);
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            border-radius: 50px;
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            box-shadow: inset 0 2px 4px rgba(0,0,0,0.05);
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        .toggle-option {
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            z-index: 1;
            position: relative;
            transition: color 0.3s;
            color: var(--text-gray);
        }

        /* The sliding background pill */
        .toggle-bg {
            position: absolute;
            top: 4px;
            left: 4px;
            height: calc(100% - 8px);
            width: 50%; /* Assumes 2 options equal width */
            background-color: var(--primary-blue);
            border-radius: 50px;
            transition: transform 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
            box-shadow: 0 2px 5px rgba(11, 83, 148, 0.3);
        }

        .toggle-wrapper.state-new .toggle-option[data-val="new"] { color: white; }
        .toggle-wrapper.state-new .toggle-bg { transform: translateX(0); }

        .toggle-wrapper.state-old .toggle-option[data-val="old"] { color: white; }
        .toggle-wrapper.state-old .toggle-bg { transform: translateX(100%); background-color: #555555; }


        /* --- Loader --- */
        .loader-container {
            margin: 20px 0;
            font-weight: 600;
            color: var(--text-black);
            font-size: 1.05rem;
        }
        
        #dynamic-destination-text {
            color: var(--primary-blue);
            font-weight: 700;
        }

        /* --- Buttons --- */
        .btn-group {
            display: flex;
            flex-direction: column;
            gap: 15px;
            align-items: center;
            margin-top: 30px;
            flex-wrap: wrap;
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        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
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        .btn-primary {
            background-color: var(--primary-blue);
            color: var(--white);
            box-shadow: 0 4px 12px rgba(11, 83, 148, 0.3);
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        .btn-primary:hover {
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            transform: translateY(-2px);
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        .btn-dark {
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            color: var(--white);
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
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        .btn-dark:hover {
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            transform: translateY(-2px);
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            border: 2px solid var(--text-black);
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        .btn-outline:hover {
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            color: var(--white);
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        /* --- QR Section --- */
        #qr-container {
            display: none; /* Hidden by default */
            margin-top: 25px;
            padding: 20px;
            background: #f0f0f0;
            border-radius: 12px;
            animation: fadeIn 0.5s ease;
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        .qr-wrapper {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 80px; /* Increased gap for better scanning separation */
            margin-bottom: 10px;
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        .qr-box {
            display: flex;
            flex-direction: column;
            align-items: center;
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        .qr-box img {
            border: 5px solid white;
            border-radius: 4px;
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        .qr-label {
            margin-top: 10px;
            font-weight: 700;
            color: var(--primary-blue);
            margin-bottom: 2px;
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        .qr-link {
            font-size: 0.8rem;
            color: var(--text-gray);
            text-decoration: none;
            margin-top: 5px;
            font-weight: 500;
            transition: color 0.2s;
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        .qr-link:hover {
            color: var(--primary-blue);
            text-decoration: underline;
        }

        .qr-help {
            font-size: 0.85rem;
            color: var(--text-gray);
            margin-top: 15px;
        }

        /* --- Contacts Grid --- */
        .contacts-section {
            margin-top: 50px;
            border-top: 1px solid #eee;
            padding-top: 30px;
        }

        .contacts-title {
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--text-gray);
            margin-bottom: 20px;
            font-weight: 600;
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        .contacts-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            text-align: left;
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 0.95rem;
        }

        .contact-item i {
            color: var(--primary-red);
            min-width: 20px;
        }

        .contact-item a {
            color: var(--text-black);
            text-decoration: none;
            transition: color 0.2s;
        }

        .contact-item a:hover {
            color: var(--primary-blue);
            text-decoration: underline;
        }

        /* --- Footer --- */
        footer {
            text-align: center;
            padding: 20px;
            font-size: 0.85rem;
            color: var(--text-gray);
            background-color: #fff;
            border-top: 1px solid #eee;
        }

        /* --- Animations & Responsive --- */
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(-10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        @media (max-width: 768px) {
            h1 { font-size: 1.6rem; }
            .card { padding: 25px 20px; }
            .contacts-grid { grid-template-columns: 1fr; }
            .logo-text { display: none; } /* Hide text on very small screens, keep icon */
            .qr-wrapper { gap: 40px; } /* Reduce gap slightly for mobile vertical stacking */
        }
        
        @media (min-width: 769px) {
             .logo-text { display: block; }
             .btn-group { flex-direction: row; justify-content: center; }
        }
    </style>
</head>
<body>

    <!-- Header -->
    <header>
        <div class="container header-content">
            <div class="logo-area">
                <i data-lucide="graduation-cap"></i>
                <span class="logo-text">КНУ імені Тараса Шевченка</span>
            </div>
            <div class="department">
                <span>Науково-дослідна частина</span>
            </div>
        </div>
    </header>

    <!-- Main Content -->
    <main>
        <div class="container">
            <div class="card">
                <!-- Icon -->
                <div style="display: flex; justify-content: center;">
                    <i data-lucide="globe-2" class="status-icon" style="width: 60px; height: 60px;"></i>
                </div>

                <!-- Text Info -->
                <h1>Ми переїхали!</h1>
                <p class="lead">
                    Наш вебсайт оновлено. Вся актуальна інформація тепер буде знаходитися за новою адресою. Однак, Ви все ще можете відвідати копію старого вебсайту за потреби
                </p>

                <!-- Checker / Switcher -->
                <div class="switcher-container">
                    <div class="switcher-label">Куди перейти?</div>
                    <div class="toggle-wrapper state-new" id="redirect-toggle">
                        <div class="toggle-bg"></div>
                        <div class="toggle-option" data-val="new">Новий сайт</div>
                        <div class="toggle-option" data-val="old">Старий сайт</div>
                    </div>
                </div>

                <!-- Redirect Loader -->
                <div class="loader-container">
                    <i data-lucide="loader-2" class="animate-spin" style="vertical-align: middle; margin-right: 8px;"></i>
                    Перенаправлення на <span id="dynamic-destination-text">новий сайт</span> через <span id="timer">5</span> с...
                </div>

                <!-- Actions -->
                <div class="btn-group">
                    <a href="https://science.knu.ua/new" class="btn btn-primary">
                        Новий сайт
                        <i data-lucide="arrow-right"></i>
                    </a>
                    <a href="https://science.knu.ua/old" class="btn btn-dark">
                        <i data-lucide="history"></i>
                        Старий сайт
                    </a>
                    <button class="btn btn-outline" id="toggle-qr">
                        <i data-lucide="qr-code"></i>
                        QR-коди
                    </button>
                </div>

                <!-- Hidden QR Section -->
                <div id="qr-container">
                    <div class="qr-wrapper">
                        <!-- QR New -->
                        <div class="qr-box">
                            <div class="qr-label">Новий сайт</div>
                            <div id="qrcode-new"></div>
                            <a href="https://science.knu.ua/new" class="qr-link">science.knu.ua/new</a>
                        </div>
                        <!-- QR Old -->
                        <div class="qr-box">
                            <div class="qr-label">Старий сайт</div>
                            <div id="qrcode-old"></div>
                            <a href="https://science.knu.ua/old" class="qr-link">science.knu.ua/old</a>
                        </div>
                    </div>
                    <p class="qr-help">Скануйте для переходу на відповідну версію сайту</p>
                </div>

                <!-- Contacts -->
                <div class="contacts-section">
                    <div class="contacts-title">Контакти НДЧ КНУ</div>
                    <div class="contacts-grid">
                        <div class="contact-item">
                            <i data-lucide="map-pin"></i>
                            <span>
                                м. Київ,
                                вул. Павла Скоропадського, 14
                            </span>
                        </div>
                        <div class="contact-item">
                            <i data-lucide="phone"></i>
                            <a href="tel:+380442393230">+380 (44) 239-3230</a>
                        </div>
                        <div class="contact-item">
                            <i data-lucide="mail"></i>
                            <a href="mailto:ndch@knu.ua">ndch@knu.ua</a>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </main>

    <!-- Footer -->
    <footer>
        <p>&copy; 2026 Київський національний університет імені Тараса Шевченка</p>
    </footer>

    <!-- JavaScript Logic -->
    <script>
        // 1. Initialize Icons
        lucide.createIcons();

        // Constants
        const NEW_URL = "https://science.knu.ua/new";
        const OLD_URL = "https://science.knu.ua/old";
        const REDIRECT_TIME = 5; // seconds

        // State
        let currentRedirectTarget = NEW_URL; // Default

        // 2. Redirect Logic
        let timeLeft = REDIRECT_TIME;
        const timerElement = document.getElementById('timer');
        
        const countdown = setInterval(() => {
            timeLeft--;
            if (timerElement) {
                timerElement.innerText = timeLeft;
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            if (timeLeft <= 0) {
                clearInterval(countdown);
                window.location.href = currentRedirectTarget;
            }
        }, 1000);

        // 3. Checker / Switcher Logic
        const toggleWrapper = document.getElementById('redirect-toggle');
        const destinationText = document.getElementById('dynamic-destination-text');
        const toggleOptions = document.querySelectorAll('.toggle-option');

        toggleOptions.forEach(option => {
            option.addEventListener('click', function() {
                const val = this.getAttribute('data-val');
                
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                    // Update State
                    currentRedirectTarget = NEW_URL;
                    
                    // Update Visuals
                    toggleWrapper.classList.remove('state-old');
                    toggleWrapper.classList.add('state-new');
                    
                    // Update Text
                    destinationText.innerText = "новий сайт";
                    destinationText.style.color = "#0b5394"; // Blue
                } else {
                    // Update State
                    currentRedirectTarget = OLD_URL;
                    
                    // Update Visuals
                    toggleWrapper.classList.remove('state-new');
                    toggleWrapper.classList.add('state-old');
                    
                    // Update Text
                    destinationText.innerText = "старий сайт";
                    destinationText.style.color = "#444444"; // Gray
                }
            });
        });

        // 4. QR Code Logic (Toggle + Generate Both)
        const qrBtn = document.getElementById('toggle-qr');
        const qrContainer = document.getElementById('qr-container');
        let isQrGenerated = false;

        qrBtn.addEventListener('click', () => {
            // Toggle visibility
            if (qrContainer.style.display === "block") {
                qrContainer.style.display = "none";
                qrBtn.innerHTML = '<i data-lucide="qr-code"></i> Показати QR';
            } else {
                qrContainer.style.display = "block";
                qrBtn.innerHTML = '<i data-lucide="x"></i> Сховати QR';
                
                // Generate only once
                if (!isQrGenerated) {
                    // Generate QR for New Site
                    new QRCode(document.getElementById("qrcode-new"), {
                        text: NEW_URL,
                        width: 128,
                        height: 128,
                        colorDark : "#0b5394", // Primary Blue
                        colorLight : "#ffffff",
                        correctLevel : QRCode.CorrectLevel.H
                    });

                    // Generate QR for Old Site
                    new QRCode(document.getElementById("qrcode-old"), {
                        text: OLD_URL,
                        width: 128,
                        height: 128,
                        colorDark : "#444444", // Dark Gray
                        colorLight : "#ffffff",
                        correctLevel : QRCode.CorrectLevel.H
                    });
                    
                    isQrGenerated = true;
                }
            }
            // Re-render icons if HTML changed
            lucide.createIcons();
        });
    </script>
</body>
</html>