(function () {
  function createIconElement(name, sourceEl) {
    const icon = document.createElement('i');
    icon.dataset.lucide = name;
    icon.setAttribute('aria-hidden', 'true');

    if (sourceEl) {
      const className = sourceEl.getAttribute('class');
      if (className) {
        icon.setAttribute('class', className);
      }
    }

    return icon;
  }

  function replaceIcon(sourceEl, name) {
    if (!sourceEl || !name) {
      return;
    }

    sourceEl.replaceWith(createIconElement(name, sourceEl));
  }

  function pickByText(text, rules, fallback = null) {
    const value = (text || '').toLowerCase();
    for (const [needle, iconName] of rules) {
      if (value.includes(needle)) {
        return iconName;
      }
    }
    return fallback;
  }

  function replaceDropdownIcons() {
    document.querySelectorAll('.dropdown-menu-item').forEach((item) => {
      const iconEl = item.querySelector('.dropdown-item-icon svg');
      if (!iconEl) {
        return;
      }

      const label = item.querySelector('h4')?.textContent || item.textContent || '';
      const iconName = pickByText(label, [
        ['compressed biogas', 'flame'],
        ['cbg', 'flame'],
        ['green hydrogen', 'atom'],
        ['carbon capture', 'cloud'],
        ['carbon credits', 'bar-chart-3'],
        ['district cooling', 'snowflake'],
      ], 'circle');

      replaceIcon(iconEl, iconName);
    });
  }

  function replaceSolutionCards() {
    document.querySelectorAll('.solution-feature-card').forEach((card) => {
      const iconEl = card.querySelector('.solution-feature-icon svg');
      if (!iconEl) {
        return;
      }

      const title = card.querySelector('h3')?.textContent || '';
      const iconName = pickByText(title, [
        ['hydrogen production', 'factory'],
        ['fuel cell applications', 'battery'],
        ['refueling stations', 'fuel'],
        ['storage and transportation', 'truck'],
        ['energy efficient', 'zap'],
        ['valuable byproducts', 'package'],
        ['carbon-negative', 'leaf'],
        ['formal approval', 'badge-check'],
        ['market applications', 'bar-chart-3'],
        ['commercial confidence', 'shield-check'],
        ['compressed biogas', 'flame'],
        ['biocng', 'flame'],
        ['ccus', 'cloud'],
        ['waste conversion', 'recycle'],
        ['ready-to-run', 'factory'],
        ['commercial success', 'coins'],
        ['fuel substitute', 'fuel'],
        ['environmental value', 'leaf'],
        ['revenue streams', 'coins'],
        ['compact hardware', 'package'],
        ['performance indicators', 'bar-chart-3'],
        ['key advantages', 'shield-check'],
        ['biogas / biomethane co2', 'cloud'],
        ['syngas / blue hydrogen co2', 'atom'],
        ['industrial flue gas co2', 'factory'],
        ['lower methane loss', 'shield'],
        ['lower energy demand', 'zap'],
        ['higher recovery', 'target'],
        ['better scalability', 'layers'],
        ['greenhouse enrichment', 'sprout'],
        ['dry ice / cold chain', 'snowflake'],
        ['pcc / mineralization', 'beaker'],
        ['co2-cured products', 'building'],
      ], null);

      if (iconName) {
        replaceIcon(iconEl, iconName);
      }
    });
  }

  function replaceAboutAndTechnicalIcons() {
    document.querySelectorAll('.solution-about-item, .solution-technical-item').forEach((item) => {
      const iconEl = item.querySelector('.solution-about-icon svg');
      if (!iconEl) {
        return;
      }

      const title = item.querySelector('h3')?.textContent || '';
      const iconName = pickByText(title, [
        ['leadership', 'users'],
        ['delivery model', 'route'],
        ['project intent', 'target'],
        ['methane pyrolysis', 'flame'],
        ['zero co2 emissions', 'cloud-off'],
        ['carbon byproducts', 'package'],
        ['inputs', 'arrow-down-to-line'],
        ['outputs', 'arrow-up-to-line'],
        ['execution focus', 'rocket'],
        ['methane feed', 'arrow-down'],
        ['heating and reactor operation', 'flame'],
        ['separation and analysis', 'sliders-horizontal'],
        ['safety and automation', 'shield-check'],
        ['compact hardware', 'package'],
        ['performance indicators', 'bar-chart-3'],
        ['key advantages', 'shield-check'],
      ], null);

      if (iconName) {
        replaceIcon(iconEl, iconName);
      }
    });
  }

  function replaceHome2Icons() {
    document.querySelectorAll('.pillar-item').forEach((item) => {
      const iconEl = item.querySelector('.pillar-icon svg');
      if (!iconEl) {
        return;
      }

      const title = item.querySelector('h3')?.textContent || '';
      const iconName = pickByText(title, [
        ['turnkey cbg', 'factory'],
        ['ccus', 'cloud'],
        ['sustainable value', 'leaf'],
      ], null);

      if (iconName) {
        replaceIcon(iconEl, iconName);
      }
    });

    document.querySelectorAll('.solution-card').forEach((card) => {
      const iconEl = card.querySelector('.card-icon-wrapper svg');
      if (!iconEl) {
        return;
      }

      const title = card.querySelector('.header-text-group h3')?.textContent || '';
      const iconName = pickByText(title, [
        ['compressed biogas', 'flame'],
        ['carbon capture', 'cloud'],
      ], null);

      if (iconName) {
        replaceIcon(iconEl, iconName);
      }
    });

    document.querySelectorAll('.floating-badge .badge-icon svg').forEach((iconEl) => {
      replaceIcon(iconEl, 'trending-up');
    });

    document.querySelectorAll('.footer-metric-item').forEach((item) => {
      const iconEl = item.querySelector('.metric-icon-wrapper svg');
      if (!iconEl) {
        return;
      }

      const title = item.querySelector('.metric-text h4')?.textContent || '';
      const iconName = pickByText(title, [
        ['100% sold', 'badge-check'],
        ['3.2 years', 'clock-3'],
        ['25% capex', 'percent'],
        ['rs 70-80l', 'landmark'],
      ], null);

      if (iconName) {
        replaceIcon(iconEl, iconName);
      }
    });
  }

  function replaceHomePageContactIcons() {
    document.querySelectorAll('.contact-link-item .link-icon i[data-lucide]').forEach((icon) => {
      const label = icon.closest('.contact-link-item')?.textContent || '';
      if (label.toLowerCase().includes('email')) {
        icon.dataset.lucide = 'mail';
      }
    });
  }

  function replaceRemainingCustomIcons() {
    replaceDropdownIcons();
    replaceSolutionCards();
    replaceAboutAndTechnicalIcons();
    replaceHome2Icons();
    replaceHomePageContactIcons();
  }

  function initLucideIcons() {
    replaceRemainingCustomIcons();

    if (!window.lucide || typeof window.lucide.createIcons !== 'function') {
      return;
    }

    window.lucide.createIcons();
  }

  if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', initLucideIcons, { once: true });
  } else {
    initLucideIcons();
  }
})();