javascript:(function() { 
    /* The container for the Shorts overlay elements */
    const metapanelYoutubeShortHover = document.getElementById("experiment-overlay"); 
    if (!metapanelYoutubeShortHover) { 
        console.warn("Element with ID 'experiment-overlay' not found."); 
        return; 
    } 

    /* Global variables */ 
    var hoverTimeoutYoutubeShortHover; 
    var tooltipElementYoutubeShortHover = null; 

    /************************************* SUPPORT FUNCTIONS *************************************/ 
    
    const showTooltipYoutubeShortHover = (text, targetElement) => { 
        if (tooltipElementYoutubeShortHover) { 
            document.body.removeChild(tooltipElementYoutubeShortHover); 
            tooltipElementYoutubeShortHover = null; 
        } 
        tooltipElementYoutubeShortHover = document.createElement("div"); 
        tooltipElementYoutubeShortHover.style.cssText = ` 
            position: fixed; 
            background-color: rgba(33, 33, 33, 0.95); 
            color: #fff; 
            padding: 8px 12px; 
            border-radius: 4px; 
            font-size: 14px; 
            z-index: 10000; 
            max-width: 300px; 
            white-space: pre-wrap; 
            pointer-events: none; 
            opacity: 0; 
            transition: opacity 0.2s ease-in-out; 
            box-shadow: 0 4px 12px rgba(0,0,0,0.5); 
            border: 1px solid rgba(255,255,255,0.1);
        `; 
        tooltipElementYoutubeShortHover.textContent = text; 
        document.body.appendChild(tooltipElementYoutubeShortHover); 
        
        const targetRect = targetElement.getBoundingClientRect(); 
        /* Position tooltip above or below based on space */
        let topPos = targetRect.bottom + 10;
        if (topPos + tooltipElementYoutubeShortHover.offsetHeight > window.innerHeight) {
            topPos = targetRect.top - tooltipElementYoutubeShortHover.offsetHeight - 10;
        }
        
        tooltipElementYoutubeShortHover.style.top = topPos + "px"; 
        tooltipElementYoutubeShortHover.style.left = Math.max(10, targetRect.left) + "px"; 
        tooltipElementYoutubeShortHover.style.opacity = "1"; 
    }; 

    const hideTooltipYoutubeShortHover = () => { 
        if (tooltipElementYoutubeShortHover) { 
            document.body.removeChild(tooltipElementYoutubeShortHover); 
            tooltipElementYoutubeShortHover = null; 
        } 
    }; 

    const handleDelegateMouseOverYoutubeShortHover = (event) => { 
        /* YouTube Shorts titles are now H1 elements */
        let target = event.target.closest('h1'); 
        if (!target || !metapanelYoutubeShortHover.contains(target)) return; 

        if (target.dataset.tooltipActive === 'true') { 
            return; 
        } 
        target.dataset.tooltipActive = 'true'; 

        if (target.hasAttribute('title') && !target.dataset.originalTitle) { 
            target.dataset.originalTitle = target.getAttribute('title'); 
        } 
        target.setAttribute('title', ''); 
        
        const fullText = target.innerText; 
        hoverTimeoutYoutubeShortHover = setTimeout(() => { 
            showTooltipYoutubeShortHover(fullText, target); 
        }, 400); 
    }; 

    const handleDelegateMouseOutYoutubeShortHover = (event) => { 
        let target = event.target.closest('h1'); 
        if (!target || !metapanelYoutubeShortHover.contains(target)) return; 
        
        clearTimeout(hoverTimeoutYoutubeShortHover); 
        hideTooltipYoutubeShortHover(); 
        
        if (target.dataset.originalTitle !== undefined) { 
            target.setAttribute('title', target.dataset.originalTitle); 
            delete target.dataset.originalTitle; 
        } else { 
            target.removeAttribute('title'); 
        } 
        delete target.dataset.tooltipActive; 
    }; 

    /********************************************************************************************* MAIN FUNCTION *********************************************************************************************/ 
    
    function mainYouTubeShortHoverTitle() { 
        /* Cleanup previous listeners if re-running */
        metapanelYoutubeShortHover.removeEventListener("mouseover", handleDelegateMouseOverYoutubeShortHover); 
        metapanelYoutubeShortHover.removeEventListener("mouseout", handleDelegateMouseOutYoutubeShortHover); 
        
        metapanelYoutubeShortHover.addEventListener("mouseover", handleDelegateMouseOverYoutubeShortHover); 
        metapanelYoutubeShortHover.addEventListener("mouseout", handleDelegateMouseOutYoutubeShortHover); 
        
        console.log("YouTube Shorts Title Hover bookmarklet updated and active!"); 
    } 

    mainYouTubeShortHoverTitle();
})();