(function () {
  "use strict";

  const STYLE_ID = "sa-civic-ornament-v9";
  const ORNAMENT_ID = "sa-civic-ornament";
  const IMAGE_URL =
    "https://forumstatic.ru/files/001c/cd/12/40442.png";

  function install() {
    const decor = document.querySelector(
      "#sa-dossier-clean .sa-id-decor-work"
    );

    if (!decor) return;

    let style = document.getElementById(STYLE_ID);

    if (!style) {
      style = document.createElement("style");
      style.id = STYLE_ID;

      style.textContent = `
        #sa-dossier-clean .sa-id-decor-work::after {
          content: none !important;
          display: none !important;
        }

        #sa-dossier-clean .sa-id-decor-work
        #${ORNAMENT_ID} {
          position: absolute !important;
          top: 83px !important;
          left: 50% !important;

          width: 72px !important;
          height: 22px !important;

          display: block !important;
          margin: 0 !important;
          padding: 0 !important;
          border: none !important;
          outline: none !important;
          box-shadow: none !important;

          background-color: transparent !important;
          background-image: url("${IMAGE_URL}") !important;
          background-position: center !important;
          background-repeat: no-repeat !important;
          background-size: contain !important;

          transform: translateX(-50%) scale(1) !important;
          transform-origin: center !important;

          z-index: 20 !important;
          pointer-events: auto !important;
          cursor: pointer !important;

          transition:
            transform .5s ease,
            filter .5s ease !important;
        }

        #sa-dossier-clean .sa-id-decor-work
        #${ORNAMENT_ID}:hover {
          transform: translateX(-50%) scale(1.12) !important;
          filter:
            brightness(1.4)
            drop-shadow(0 0 7px rgba(235,183,87,.85)) !important;
        }
      `;

      document.head.appendChild(style);
    }

    let ornament = document.getElementById(ORNAMENT_ID);

    if (!ornament) {
      ornament = document.createElement("div");
      ornament.id = ORNAMENT_ID;
      ornament.setAttribute("aria-label", "Печать San Avelio");
      decor.appendChild(ornament);
    }
  }

  function start() {
    install();

    const observer = new MutationObserver(() => {
      if (!document.getElementById(ORNAMENT_ID)) {
        install();
      }
    });

    observer.observe(document.body, {
      childList: true,
      subtree: true
    });
  }

  if (document.readyState === "loading") {
    document.addEventListener("DOMContentLoaded", start);
  } else {
    start();
  }
})();