/*
 * Chrome-safe fixed-logo morph.
 * The JavaScript phase controller toggles one class; both visual layers stay
 * mounted throughout the transition and are never hidden with display:none.
 * Cycle: 3 seconds logo, 2 seconds morph in, 2 seconds menu, 2 seconds morph out.
 */

.brand-menu-toggle {
  --dvs-logo-morph-size: 64px;
  position: relative;
  width: var(--dvs-logo-morph-size);
  height: var(--dvs-logo-morph-size);
  flex-basis: var(--dvs-logo-morph-size);
  overflow: hidden;
  border-radius: 50%;
  isolation: isolate;
}

.brand-menu-toggle .fixed-logo,
.brand-menu-toggle .logo-morph-menu {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  transform-origin: center;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  will-change: opacity, transform;
}

.brand-menu-toggle .fixed-logo {
  z-index: 2;
  display: block;
  object-fit: cover;
  opacity: 1;
  transform: translate3d(0, 0, 0) scale(1) rotate(0deg);
}

.brand-menu-toggle .logo-morph-menu {
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 7px;
  /* Transparent by design: the active topbar is the exact background. */
  background: transparent;
  box-shadow: none;
  opacity: 0;
  transform: translate3d(0, 0, 0) scale(.66) rotate(-20deg);
  pointer-events: none;
}

.brand-menu-toggle .logo-morph-menu span {
  display: block;
  width: 58%;
  height: 4px;
  flex: 0 0 4px;
  border-radius: 999px;
  background: #fff;
  box-shadow:
    0 0 4px rgba(255, 255, 255, 1),
    0 0 9px rgba(220, 248, 255, .95),
    0 0 16px rgba(85, 210, 255, .82);
  opacity: 0;
  transform: translate3d(0, 0, 0) scaleX(.08);
  transform-origin: center;
}

.brand-menu-toggle.dvs-logo-morph-ready .fixed-logo,
.brand-menu-toggle.dvs-logo-morph-ready .logo-morph-menu {
  transition: opacity 2s ease-in-out, transform 2s ease-in-out;
}

.brand-menu-toggle.dvs-logo-morph-ready .logo-morph-menu span {
  transition: opacity 2s ease-in-out, transform 2s ease-in-out;
}

.brand-menu-toggle.is-hamburger-visible .fixed-logo {
  opacity: 0;
  transform: translate3d(0, 0, 0) scale(.58) rotate(20deg);
}

.brand-menu-toggle.is-hamburger-visible .logo-morph-menu {
  opacity: 1;
  transform: translate3d(0, 0, 0) scale(1) rotate(0deg);
}

.brand-menu-toggle.is-hamburger-visible .logo-morph-menu span {
  opacity: 1;
  transform: translate3d(0, 0, 0) scaleX(1);
}

@media (max-width: 850px) {
  .brand-menu-toggle {
    --dvs-logo-morph-size: 54px;
  }

  .brand-menu-toggle .logo-morph-menu {
    gap: 6px;
  }

  .brand-menu-toggle .logo-morph-menu span {
    height: 3px;
    flex-basis: 3px;
  }
}