main.js

// TYPEWRITER
const text = [
    "Code · Train · Secure",
    "Web & App Development",
    "Cyber Security Training",
    "Startup from Bangladesh"
];

let index = 0;
let charIndex = 0;

function type() {
    const el = document.getElementById("typing");
    if (!el) return;

    let currentText = text[index];
    el.innerHTML = currentText.substring(0, charIndex);
    charIndex++;

    if (charIndex > currentText.length) {
        setTimeout(erase, 1500);
    } else {
        setTimeout(type, 90);
    }
}

function erase() {
    const el = document.getElementById("typing");
    let currentText = text[index];

    el.innerHTML = currentText.substring(0, charIndex);
    charIndex--;

    if (charIndex < 0) {
        index = (index + 1) % text.length;
        setTimeout(type, 200);
    } else {
        setTimeout(erase, 40);
    }
}

// INIT
document.addEventListener("DOMContentLoaded", () => {

    type();

    // NAV SCROLL
    window.addEventListener("scroll", () => {
        const nav = document.querySelector("nav");
        if (window.scrollY > 50) nav.classList.add("shrink");
        else nav.classList.remove("shrink");
    });
});