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Explainer-Videos

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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>Videoreferenzen Slider</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            background-color: #f0f0f0;
            transition: background-color 0.5s, color 0.5s;
        }
        .slider-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 40px;
        }
        .main-video {
            position: relative;
            width: 85%;
            max-width: 1200px;
            aspect-ratio: 16 / 9;
            border-radius: 12px;
            overflow: hidden;
            transition: opacity 0.5s ease;
            margin-bottom: 30px;
        }
        .main-video iframe {
            width: 100%;
            height: 100%;
            border: none;
            transition: opacity 0.5s;
        }
        .thumbnail-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .thumbnail {
            position: relative;
            width: 100%;
            height: 230px;
            border-radius: 12px;
            cursor: pointer;
            transition: transform 0.3s, opacity 0.3s;
            opacity: 0.95;
            overflow: hidden;
        }
        .thumbnail img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s;
        }
        .thumbnail:hover img {
            transform: scale(1.1);
        }
        .play-button {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 40px;
            height: 40px;
            background-color: rgba(0, 0, 0, 0.7);
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            font-size: 20px;
            color: white;
            animation: pulse 1.5s infinite;
        }
        @keyframes pulse {
            0%, 100% { transform: translate(-50%, -50%) scale(1); }
            50% { transform: translate(-50%, -50%) scale(1.05); }
        }
        @media (max-width: 768px) {
            .main-video {
                width: 100%;
            }
            .thumbnail-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .thumbnail {
                height: 280px; /* Closer to square for mobile view */
            }
        }
    </style>
</head>
<body>
    <div class="slider-container">
        <div class="main-video" id="mainVideoContainer">
            <iframe id="mainVideo" src="https://www.youtube.com/embed/mec4UzJhjKk?autoplay=1" loading="lazy" allowfullscreen></iframe>
        </div>
        <div class="thumbnail-list">
            <div class="thumbnail" onclick="selectVideo(0)">
                <img src="https://img.youtube.com/vi/mec4UzJhjKk/0.jpg" loading="lazy" />
                <div class="play-button">▶</div>
            </div>
            <div class="thumbnail" onclick="selectVideo(1)">
                <img src="https://img.youtube.com/vi/W_Y7nr29UlI/0.jpg" loading="lazy" />
                <div class="play-button">▶</div>
            </div>
            <div class="thumbnail" onclick="selectVideo(2)">
                <img src="https://img.youtube.com/vi/ybHS7vNfPXw/0.jpg" loading="lazy" />
                <div class="play-button">▶</div>
            </div>
            <div class="thumbnail" onclick="selectVideo(3)">
                <img src="https://img.youtube.com/vi/FU5CxlqQEqo/0.jpg" loading="lazy" />
                <div class="play-button">▶</div>
            </div>
        </div>
    </div>

    <script>
        const videos = [
            "https://www.youtube.com/embed/mec4UzJhjKk?autoplay=1",
            "https://www.youtube.com/embed/W_Y7nr29UlI?autoplay=1",
            "https://www.youtube.com/embed/ybHS7vNfPXw?autoplay=1",
            "https://www.youtube.com/embed/FU5CxlqQEqo?autoplay=1"
        ];

        let currentIndex = 0;

        function updateVideo() {
            const mainVideoContainer = document.getElementById("mainVideoContainer");
            const mainVideo = document.getElementById("mainVideo");
            mainVideoContainer.style.opacity = "0";
            setTimeout(() => {
                mainVideo.src = videos[currentIndex];
                mainVideoContainer.style.opacity = "1";
            }, 300);
        }

        function selectVideo(index) {
            currentIndex = index;
            updateVideo();
        }
    </script>
</body>
</html>