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<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Video Comparison Slider</title>
    <link href="https://fonts.googleapis.com/css2?family=Saira:wght@400;500;600;700&display=swap" rel="stylesheet">
    <style>
        :root {
            --container-width: 80vw;
            --primary-color: rgb(0, 80, 150);
            --transition-speed: 0.3s;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            background: black;
            color: white;
            font-family: 'Saira', sans-serif;
        }

        /* Navigation */
        .tabs {
            display: flex;
            gap: 10px;
            margin-bottom: 20px;
        }

        .tab {
            padding: 10px 20px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 5px;
            cursor: pointer;
            transition: background var(--transition-speed);
            font-weight: 500;
            letter-spacing: 0.5px;
        }

        .tab:hover {
            background: rgba(255, 255, 255, 0.2);
        }

        .tab.active {
            background: var(--primary-color);
        }

        /* Video Container */
        .video-container {
            position: relative;
            width: var(--container-width);
            height: calc(var(--container-width) * 9 / 16);
            overflow: hidden;
        }

        video {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .second-video {
            clip-path: inset(0 50% 0 0);
        }

        /* Slider */
        .slider {
            position: absolute;
            top: 0;
            left: 30%;
            width: 2px;
            height: 100%;
            background: var(--primary-color);
            cursor: ew-resize;
            z-index: 10;
            animation: slide-demo 5s ease-in-out forwards;
            border-radius: 4px;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
        }

        .slider::before,
        .slider::after {
            content: '';
            position: absolute;
            top: 80%;
            transform: translateY(-50%);
            width: 30px;
            height: 30px;
            background-size: contain;
            background-repeat: no-repeat;
            transition: all var(--transition-speed);
            opacity: 0;
        }

        .slider::before {
            left: -27px;
            background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="rgb(0, 80, 150)"><polygon points="14,7 8,12 14,17"/></svg>');
        }

        .slider::after {
            right: -27px;
            background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="rgb(0, 80, 150)"><polygon points="10,7 16,12 10,17"/></svg>');
        }

        .slider.ready::before,
        .slider.ready::after {
            opacity: 0.7;
        }

        .slider.ready:hover::before,
        .slider.ready:hover::after {
            opacity: 1;
            transform: translateY(-50%) scale(1.2);
        }

        /* Watermark */
        .watermark {
            position: absolute;
            top: 4%;
            right: 1%;
            z-index: 15;
            opacity: 0;
            width: 12%;
            pointer-events: none;
            transition: opacity var(--transition-speed) ease;
        }

        .watermark img {
            width: 100%;
            height: auto;
            filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
        }

        /* Animation */
        @keyframes slide-demo {
            0% {
                left: 100%;
            }

            10% {
                left: 80%;
            }

            20% {
                left: 85%;
            }

            50% {
                left: 20%;
            }

            70% {
                left: 60%;
            }

            100% {
                left: 30%;
            }
        }
    </style>
</head>

<body>
    <nav class="tabs" id="tabs">
        <div class="tab" data-page="SAILING_BOAT">Sailing Boat</div>
        <div class="tab" data-page="MOB_NIGHT">MOB Night</div>
        <div class="tab" data-page="BUOYS">Buoys</div>
    </nav>

    <main class="video-container" id="videoContainer">
        <video id="video1" playsinline autoplay loop muted></video>
        <video id="video2" class="second-video" playsinline autoplay loop muted></video>
        <div class="slider" id="slider"></div>
        <div class="watermark">
            <img src="Logo-SEA-AI.png" alt="SEA.AI Logo">
        </div>
    </main>

    <script>
        // DOM Elements
        const elements = {
            slider: document.getElementById('slider'),
            container: document.getElementById('videoContainer'),
            video1: document.getElementById('video1'),
            video2: document.getElementById('video2'),
            watermark: document.querySelector('.watermark')
        };

        // State
        let isDragging = false;
        const currentPage = new URLSearchParams(window.location.search).get('page') || 'SAILING_BOAT';

        // Video Management
        function updateVideos(page) {
            elements.video1.src = `${page}/SEA-AI-Brain.mp4`;
            elements.video2.src = `${page}/FLIR.mp4`;

            // Update URL and active tab
            const url = new URL(window.location);
            url.searchParams.set('page', page);
            window.history.pushState({}, '', url);

            document.querySelectorAll('.tab').forEach(tab => {
                tab.classList.toggle('active', tab.dataset.page === page);
            });
        }

        // Slider Logic
        function handleSlide(positionX) {
            const rect = elements.container.getBoundingClientRect();
            const sliderPosition = Math.max(0, Math.min(positionX - rect.left, rect.width));

            elements.slider.style.left = `${sliderPosition}px`;
            elements.video2.style.clipPath = `inset(0 ${rect.width - sliderPosition}px 0 0)`;

            // Update watermark visibility
            const watermarkLeft = elements.watermark.getBoundingClientRect().left - rect.left;
            elements.watermark.style.opacity = sliderPosition > watermarkLeft ? '0' : '0.9';
        }

        function updateClipPath() {
            const rect = elements.container.getBoundingClientRect();
            const sliderPosition = parseFloat(window.getComputedStyle(elements.slider).left);

            elements.video2.style.clipPath = `inset(0 ${rect.width - sliderPosition}px 0 0)`;

            // Update watermark during animation
            const watermarkLeft = elements.watermark.getBoundingClientRect().left - rect.left;
            elements.watermark.style.opacity = sliderPosition > watermarkLeft ? '0' : '0.9';

            requestAnimationFrame(updateClipPath);
        }

        // Event Listeners
        document.querySelectorAll('.tab').forEach(tab => {
            tab.addEventListener('click', () => updateVideos(tab.dataset.page));
        });

        // Mouse events
        elements.slider.addEventListener('mousedown', () => isDragging = true);
        window.addEventListener('mouseup', () => isDragging = false);
        window.addEventListener('mousemove', e => isDragging && handleSlide(e.clientX));

        // Touch events
        elements.slider.addEventListener('touchstart', () => isDragging = true);
        window.addEventListener('touchend', () => isDragging = false);
        window.addEventListener('touchmove', e => isDragging && handleSlide(e.touches[0].clientX));

        // Animation end
        elements.slider.addEventListener('animationend', () => {
            elements.slider.classList.add('ready');
            elements.slider.style.animation = 'none';
        });

        // Initialize
        updateVideos(currentPage);
        window.addEventListener('load', updateClipPath);
    </script>
</body>

</html>