/* ==========================================================================
   LAYER 10: Center Logo
   ========================================================================== */

.center-logo {
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(50%, 50%);
  z-index: 10;
  display: block;
  text-decoration: none;
}

.main-logo {
  display: block;
  width: 400px;
  opacity: 0;
  transition: opacity 0.35s ease, filter 0.48s ease;
}

.loaded .main-logo,
.skip-intro .main-logo {
  opacity: 0.85;
}

body:has(.page[data-page-type="home"]) .center-logo,
body:has(.page[data-page-type="about"]) .center-logo,
body:has(.page[data-page-type="model"]) .center-logo,
body:has(.page[data-page-type="corner-logo"]) .center-logo {
  position: static;
  transform: none;
  flex: 0 0 auto;
  /* Optical exception: center the tall emblem on the first navigation row. */
  margin-block-start: -35px;
}

body:has(.page[data-page-type="home"]) .main-logo,
body:has(.page[data-page-type="about"]) .main-logo,
body:has(.page[data-page-type="model"]) .main-logo,
body:has(.page[data-page-type="corner-logo"]) .main-logo {
  /* The emblem SVG has a tight viewBox, so its visible edge is the frame edge. */
  width: 32px;
  max-width: none;
}