// NextXus Federation — Cognitive Circuitry License
// Animation: Persistent Neural Mesh
// License: Token Bundle (https://keywebster.gumroad.com/l/olhsf)
// Own the marrow.

            (function () {
                "use strict";
                var canvas = document.getElementById("canvas-alpha");
                var ctx = canvas.getContext("2d");
                var stage = canvas.parentElement;
                var reduced = window.matchMedia("(prefers-reduced-motion: reduce)").matches;
                var THRESHOLD = 130, COUNT = 50;
                var nodes = [], running = false, rafId = null;

                function resize() {
                    canvas.width = stage.clientWidth;
                    canvas.height = stage.clientHeight;
                }
                function seed() {
                    nodes = [];
                    for (var i = 0; i < COUNT; i++) {
                        nodes.push({
                            x: Math.random() * canvas.width,
                            y: Math.random() * canvas.height,
                            vx: (Math.random() - 0.5) * 0.5,
                            vy: (Math.random() - 0.5) * 0.5,
                            r: 1.5 + Math.random()
                        });
                    }
                }
                function draw() {
                    var w = canvas.width, h = canvas.height, i, j, a, b, dx, dy, d;
                    ctx.fillStyle = "#0a0a0f";
                    ctx.fillRect(0, 0, w, h);
                    for (i = 0; i < nodes.length; i++) {
                        for (j = i + 1; j < nodes.length; j++) {
                            a = nodes[i]; b = nodes[j];
                            dx = a.x - b.x; dy = a.y - b.y;
                            d = Math.sqrt(dx * dx + dy * dy);
                            if (d < THRESHOLD) {
                                ctx.strokeStyle = "rgba(212,175,55," + ((1 - d / THRESHOLD) * 0.55).toFixed(3) + ")";
                                ctx.lineWidth = 0.7;
                                ctx.beginPath();
                                ctx.moveTo(a.x, a.y);
                                ctx.lineTo(b.x, b.y);
                                ctx.stroke();
                            }
                        }
                    }
                    ctx.fillStyle = "#d4af37";
                    for (i = 0; i < nodes.length; i++) {
                        ctx.beginPath();
                        ctx.arc(nodes[i].x, nodes[i].y, nodes[i].r, 0, Math.PI * 2);
                        ctx.fill();
                    }
                }
                function step() {
                    var w = canvas.width, h = canvas.height;
                    for (var i = 0; i < nodes.length; i++) {
                        var n = nodes[i];
                        n.x += n.vx; n.y += n.vy;
                        if (n.x < 0) n.x = w; else if (n.x > w) n.x = 0;
                        if (n.y < 0) n.y = h; else if (n.y > h) n.y = 0;
                    }
                }
                function loop() {
                    if (!running) return;
                    step();
                    draw();
                    rafId = requestAnimationFrame(loop);
                }
                function start() {
                    if (running || reduced) return;
                    running = true;
                    rafId = requestAnimationFrame(loop);
                }
                function stop() {
                    running = false;
                    if (rafId) cancelAnimationFrame(rafId);
                }
                window.addEventListener("resize", function () { resize(); seed(); draw(); });
                resize(); seed(); draw();
                if (!reduced) {
                    if ("IntersectionObserver" in window) {
                        new IntersectionObserver(function (entries) {
                            entries.forEach(function (e) { if (e.isIntersecting) start(); else stop(); });
                        }).observe(canvas);
                    } else {
                        start();
                    }
                }
            })();