.viewer-close {
  position: fixed;
  right: var(--edge);
  top: var(--edge);
  display: flex;
  width: var(--chrome-lane);
  height: var(--chrome-lane);
  padding: var(--nav-gap);
  border: var(--nav-border) solid var(--nav-edge);
  border-radius: 50%;
  background: var(--background-tint);
  -webkit-backdrop-filter: var(--effect-style-background-blur-veil);
  backdrop-filter: var(--effect-style-background-blur-veil);
  box-shadow: var(--effect-style-drop-shadow-float);
  color: var(--nav-ink-on);
  cursor: pointer;
}

.viewer-close-face {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  transition:
    background-color 200ms ease,
    scale 200ms cubic-bezier(0.32, 0.72, 0, 1);
}

@media (hover: hover) {
  .viewer-close:hover .viewer-close-face { background: var(--background-overlay2); }
}

.viewer-close:active .viewer-close-face {
  scale: 0.94;
  transition-duration: 200ms, 90ms;
}

.viewer-close:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.viewer-close svg { width: 18px; height: 18px; }

body[data-cursor="on"] .viewer-close:hover .viewer-close-face { background: transparent; }

@media (prefers-reduced-motion: reduce) {
  .viewer-close-face { transition: none; }
}