/* ── Theme Wipe Spine ──
   Every opacity-fade theme wipe overlay shares the same full-viewport frame:
   fixed, inset 0, on the theme-wipe layer, hidden at rest, click-through. Each
   theme's own partial adds only what differs — the background, the transition
   timing, and any per-theme extras. (upside-down's wipe is transform-driven,
   not opacity-based, so it isn't part of this set.) These declarations are
   disjoint from what the per-theme rules set, so link order doesn't matter. */
.blocky-wipe,
.constellation-wipe,
.paper-wipe,
.deep-sea-wipe,
.frost-wipe,
.matrix-wipe,
.storm-wipe,
.wanted-wipe,
.vhs-wipe {
  position: fixed;
  inset: 0;
  z-index: var(--z-theme-wipe);
  opacity: 0;
  pointer-events: none;
}