main.js

const navLinks = document.querySelectorAll('a[href^="#"]');
const briefForm = document.querySelector('#briefForm');
const leadGoal = document.querySelector('#leadGoal');
const leadGoalValue = document.querySelector('#leadGoalValue');
const packageName = document.querySelector('#packageName');
const packageSummary = document.querySelector('#packageSummary');
const timeline = document.querySelector('#timeline');
const scope = document.querySelector('#scope');
const priority = document.querySelector('#priority');

const packages = {
  service: {
    name: 'Lokálny growth web + AI predaj',
    priority: 'Získať viac telefonátov a dopytov',
  },
  shop: {
    name: 'Produktový predajný systém',
    priority: 'Premeniť návštevníkov na objednávky',
  },
  startup: {
    name: 'SaaS launch kit s AI onboardingom',
    priority: 'Vysvetliť produkt a zbierať kvalifikované leady',
  },
};

const needLabels = {
  web: 'landing page alebo redesign',
  sales: 'AI predajný skript',
  maintenance: 'mesačná údržba',
  automation: 'automatizácie a kódovanie',
};

navLinks.forEach((link) => {
  link.addEventListener('click', (event) => {
    const targetId = link.getAttribute('href');
    const target = document.querySelector(targetId);

    if (!target) return;

    event.preventDefault();
    target.scrollIntoView({ behavior: 'smooth', block: 'start' });
  });
});

function updateRecommendation() {
  if (!briefForm) return;

  const formData = new FormData(briefForm);
  const businessType = formData.get('businessType');
  const selectedNeeds = formData.getAll('needs');
  const leadTarget = Number(leadGoal.value);
  const selectedPackage = packages[businessType];
  const modules = selectedNeeds.length || 1;
  const weekEstimate = modules >= 4 ? '4–6 týždňov' : modules === 3 ? '3–4 týždne' : '2–3 týždne';
  const focus = selectedNeeds.map((need) => needLabels[need]).join(', ');

  leadGoalValue.textContent = `${leadTarget} dopytov`;
  packageName.textContent = selectedPackage.name;
  packageSummary.textContent = `Odporúčaný štart: ${focus}. Cieľ je pripraviť systém, ktorý zvládne približne ${leadTarget} dopytov mesačne.`;
  timeline.textContent = weekEstimate;
  scope.textContent = `${modules} ${modules === 1 ? 'modul' : modules < 5 ? 'moduly' : 'modulov'}`;
  priority.textContent = selectedPackage.priority;
}

briefForm?.addEventListener('input', updateRecommendation);
updateRecommendation();