:root { --stamp-ink: #cd2a10; }
.header [data-menu] {
  position: relative;
  text-transform: uppercase;
  white-space: nowrap;
}
.header [data-menu][aria-current] { color: var(--yellow); }
.header [data-menu][aria-current]::after {
  content: "";
  position: absolute;
  inset: auto 0 -.28rem;
  height: 2px;
  background: currentColor;
  clip-path: polygon(0 0, 100% 0, 93% 100%, 0 100%);
}
.header nav[aria-label="Menu principal"] { gap: clamp(.35rem, 2.2vw, 2rem); }
#filmes, #programacao { scroll-margin-top: var(--header); }
@media (max-width: 640px) {
  .header nav[aria-label="Menu principal"] { gap: .28rem; }
  .header [data-menu] { font-size: clamp(.59rem, 2.55vw, .74rem); }
}
@media (max-width: 400px) {
  :root:has(.header [data-menu]) { --header: 6.5rem; }
  .header nav[aria-label="Menu principal"] {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: .65rem .35rem;
  }
  .header [data-menu] { font-size: .7rem; width: fit-content; }
}
.back-to-top {
  position: fixed;
  right: max(1rem, env(safe-area-inset-right));
  bottom: max(1rem, env(safe-area-inset-bottom));
  z-index: 20;
  display: grid;
  place-items: center;
  width: 2.8rem;
  aspect-ratio: 1;
  padding: 0;
  border: 1px solid var(--archive-accent, #eee2c9);
  background: var(--archive-base, #201d1a);
  color: var(--archive-accent, #eee2c9);
  box-shadow: .18rem .18rem #111a;
  font: inherit;
  font-size: 1.3rem;
  cursor: pointer;
}
.back-to-top[hidden] { display: none; }
.back-to-top:hover { background: var(--archive-accent, #eee2c9); color: var(--archive-base, #201d1a); }
.back-to-top:focus-visible { outline: 2px solid currentColor; outline-offset: 3px; }

@media (prefers-reduced-motion: no-preference) {
  :root:is(.page-leaving, .page-arriving)::after {
    content: "";
    position: fixed;
    z-index: 51;
    pointer-events: none;
  }
  :root.page-leaving::after {
    --paw-width: min(88vw, 77vh);
    top: 50%;
    left: 50%;
    width: var(--paw-width);
    aspect-ratio: 391.6 / 481.49;
    background: url("assets/pata-isolada-vermelha.svg") center / contain no-repeat;
    animation: stamp-fall 900ms both;
  }
  :root.page-arriving::after {
    inset: 0;
    background: var(--stamp-ink);
  }
  :root.page-arriving.page-revealing::after {
    animation: stamp-reveal 500ms ease-out both;
  }
  @keyframes stamp-fall {
    0% {
      transform: translate(-50%, calc(-50% - 125vh));
      animation-timing-function: cubic-bezier(.62,.05,.88,.62);
    }
    65%, 73% {
      width: var(--paw-width);
      transform: translate(-50%, -50%);
      animation-timing-function: cubic-bezier(.16,.65,.35,1);
    }
    94%, 100% {
      /* The center of the main pad becomes the full-viewport cover. */
      width: 600vmax;
      transform: translate(-65%, -73%);
    }
  }
  @keyframes stamp-reveal {
    from { opacity: 1; }
    to { opacity: 0; }
  }
}