/* ============================================================
   PAGE TRANSITION — Visceral-style curtain
   Full-viewport panel rises to cover, content swaps (or navigates),
   then the same panel continues upward to reveal the next page.
   Driven by js/modules/page-transition.js (GSAP).
   ============================================================ */
.page-curtain {
    position: fixed;
    inset: 0;
    z-index: 400;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    pointer-events: none;
    visibility: hidden;
    background: var(--deep);
    transform: translateY(100%);
    transform-origin: bottom center;
}
.page-curtain.is-active { pointer-events: auto; }

/* Painted before JS boots when arriving from a transitioned link, so the
   next page never flashes uncovered under the curtain. */
html.is-page-entering .page-curtain {
    visibility: visible;
    pointer-events: auto;
    transform: none;
}
html.is-page-entering .page-curtain__inner { transform: none; }

.page-curtain__inner {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translateY(-75%);
}

.page-curtain__mark {
    width: clamp(3.5rem, 8vw, 5.5rem);
    height: auto;
    color: var(--paper);
}
.page-curtain__mark img {
    display: block;
    width: 100%;
    height: auto;
}