Furry34 Blur

The blur is removed individually when pointing or playing a video, without interfering with the viewing.
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// ==UserScript==
// @name         Furry34 Blur
// @name:ru      Furry34 Размытие
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  The blur is removed individually when pointing or playing a video, without interfering with the viewing.
// @description:ru  Размытие снимается индивидуально при наведении или воспроизведении видео, не мешая просмотру.
// @author       scody
// @license      MIT
// @match        *://furry34.com/*
// @grant        none
// ==/UserScript==

(function () {
    'use strict';

    const style = document.createElement('style');
    style.textContent = `
        .blurred-media {
            filter: blur(18px);
            transition: filter 0.2s ease-in-out;
            position: relative;
            cursor: pointer;
        }

        .blurred-media.revealed {
            filter: none !important;
        }
    `;
    document.head.appendChild(style);

    function applySimpleBlur(el) {
        el.classList.add('blurred-media');

        const isVideo = el.tagName.toLowerCase() === 'video';

        if (isVideo) {
            el.setAttribute('preload', 'metadata');
        }

        el.addEventListener('mouseenter', () => {
            if (!isVideo || el.paused) {
                el.classList.add('revealed');
            }
        });

        el.addEventListener('mouseleave', () => {
            if (!isVideo || el.paused) {
                el.classList.remove('revealed');
            }
        });

        if (isVideo) {
            el.addEventListener('play', () => {
                el.classList.add('revealed');
            });

            el.addEventListener('pause', () => {
                el.classList.remove('revealed');
            });

            el.addEventListener('ended', () => {
                el.classList.remove('revealed');
            });
        }
    }

    function processAll() {
        const imgs = document.querySelectorAll('img:not([data-blur-applied])');
        const vids = document.querySelectorAll('video:not([data-blur-applied])');

        imgs.forEach(img => {
            img.setAttribute('data-blur-applied', 'true');
            applySimpleBlur(img);
        });

        vids.forEach(video => {
            video.setAttribute('data-blur-applied', 'true');
            applySimpleBlur(video);

            if (!video.paused && !video.ended && video.readyState > 2) {
                video.classList.add('revealed');
            }
        });
    }

    const observer = new MutationObserver(processAll);
    observer.observe(document.body, { childList: true, subtree: true });

    processAll();
})();