script.js

/* AOS (scroll animations) */
AOS.init({ duration: 700, easing: 'ease-out-cubic', once: true, offset: 80 });

/* Theme toggle with localStorage */
const root = document.documentElement;
const themeBtn = document.getElementById('btn-theme');
const savedTheme = localStorage.getItem('theme');
if(savedTheme){
  root.setAttribute('data-theme', savedTheme);
}else if(window.matchMedia('(prefers-color-scheme: light)').matches){
  root.setAttribute('data-theme','light');
}
themeBtn?.addEventListener('click', () => {
  const t = root.getAttribute('data-theme') === 'dark' ? 'light' : 'dark';
  root.setAttribute('data-theme', t);
  localStorage.setItem('theme', t);
});

/* Year */
document.getElementById('year').textContent = new Date().getFullYear();

/* Typing effect */
const typingEl = document.getElementById('typing');
const words = [
  "Data Engineer | Python | Data Pipelines & Analytics",
  "Data Engineer · Python Developer",
  "ETL · BI · EDA · Financial Data"
];
let wi = 0, ci = 0, deleting = false;
function typeLoop(){
  if(!typingEl) return;
  const word = words[wi];
  typingEl.textContent = word.slice(0, ci);
  if(!deleting && ci < word.length){ ci++; }
  else if(deleting && ci > 0){ ci--; }
  else{
    if(!deleting){ setTimeout(()=> deleting = true, 900); }
    else{ deleting = false; wi = (wi+1) % words.length; }
  }
  setTimeout(typeLoop, deleting ? 35 : 55);
}
typeLoop();

/* Interactive glow helper */
function addInteractiveGlow(selector){
  document.querySelectorAll(selector).forEach(el=>{
    const add = ()=> el.classList.add('glow');
    const rm  = ()=> el.classList.remove('glow');
    el.addEventListener('mouseenter', add);
    el.addEventListener('mouseleave', rm);
    el.addEventListener('focus', add);
    el.addEventListener('blur', rm);
    el.addEventListener('touchstart', ()=> el.classList.toggle('glow'), {passive:true});
  });
}

/* Glow on: skills, language pills, contact pills, topbar buttons & PDF */
addInteractiveGlow('.chips li');
addInteractiveGlow('.lang-pills .pill');
addInteractiveGlow('.contact-pills .pill');
addInteractiveGlow('.actions .btn');     // LinkedIn / GitHub / Download PDF / Theme

/* Fix Projects initial height to avoid jump on mobile */
document.addEventListener('DOMContentLoaded', () => {
  document.querySelectorAll('#projects .project').forEach(card => {
    card.style.minHeight = Math.max(150, card.offsetHeight) + 'px';
  });
});

/* --- فقط اضافه‌شده: حباب‌های پس‌زمینه همانند نسخه قبل --- */
(function(){
  const canvas = document.getElementById('bg-bubbles');
  if(!canvas) return;
  const ctx = canvas.getContext('2d');
  let W, H, bubbles = [];

  function resize(){
    W = canvas.width = window.innerWidth;
    H = canvas.height = window.innerHeight;
    const COUNT = Math.min(50, Math.floor(W/30));
    bubbles = Array.from({length: COUNT}, () => ({
      x: Math.random()*W,
      y: Math.random()*H,
      r: Math.random()*5 + 2,           // اندازه حباب‌ها
      s: Math.random()*0.5 + 0.15,      // سرعت عمودی
      a: Math.random()*360              // زاویه برای موج سینوسی
    }));
  }
  resize();
  window.addEventListener('resize', resize);

  function draw(){
    ctx.clearRect(0,0,W,H);
    for(const b of bubbles){
      b.y -= b.s * 0.55;                // همون سرعت قبلی
      b.x += Math.sin((b.a+=0.008))*0.2; // نوسان افقی نرم
      if(b.y < -10){ b.y = H + 10; b.x = Math.random()*W; }
      const grad = ctx.createRadialGradient(b.x, b.y, 0, b.x, b.y, b.r*2.2);
      grad.addColorStop(0, 'rgba(110,201,255,0.16)');
      grad.addColorStop(1, 'rgba(184,136,255,0.03)');
      ctx.beginPath();
      ctx.fillStyle = grad;
      ctx.arc(b.x, b.y, b.r*2, 0, Math.PI*2);
      ctx.fill();
    }
    requestAnimationFrame(draw);
  }
  draw();
})();