YouTube Red Matrix Background

Cambia el fondo de YouTube a un estilo Matrix rojo animado sobre negro

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name         YouTube Red Matrix Background
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  Cambia el fondo de YouTube a un estilo Matrix rojo animado sobre negro
// @author       Juan
// @match        https://www.youtube.com/*
// @grant        none
// @run-at       document-idle
// ==/UserScript==

(function() {
    'use strict';

    // Crea el canvas para el efecto Matrix
    const canvas = document.createElement('canvas');
    canvas.id = 'matrixCanvas';
    canvas.style.position = 'fixed';
    canvas.style.top = '0';
    canvas.style.left = '0';
    canvas.style.zIndex = '-1';
    canvas.style.width = '100%';
    canvas.style.height = '100%';
    canvas.style.pointerEvents = 'none';
    canvas.style.backgroundColor = 'black';
    document.body.appendChild(canvas);

    const ctx = canvas.getContext('2d');
    let width = window.innerWidth;
    let height = window.innerHeight;
    canvas.width = width;
    canvas.height = height;

    const letters = '01あアカサタナハマヤラワガザダバパABCDEFGHIJKLMNOPQRSTUVWXYZ';
    const fontSize = 14;
    const columns = Math.floor(width / fontSize);
    const drops = Array(columns).fill(1);

    function drawMatrix() {
        ctx.fillStyle = 'rgba(0, 0, 0, 0.05)';
        ctx.fillRect(0, 0, width, height);
        ctx.fillStyle = '#ff0000'; // rojo intenso
        ctx.font = fontSize + 'px monospace';

        for (let i = 0; i < drops.length; i++) {
            const text = letters.charAt(Math.floor(Math.random() * letters.length));
            ctx.fillText(text, i * fontSize, drops[i] * fontSize);
            if (drops[i] * fontSize > height && Math.random() > 0.975) {
                drops[i] = 0;
            }
            drops[i]++;
        }
    }

    setInterval(drawMatrix, 50);

    // Oscurece el fondo de YouTube para que se vea el efecto
    const darkenYouTube = () => {
        const main = document.querySelector('ytd-app');
        if (main) {
            main.style.background = 'transparent';
        }
    };

    const interval = setInterval(() => {
        darkenYouTube();
        if (document.readyState === 'complete') {
            clearInterval(interval);
        }
    }, 1000);
})();