/* Sfondo browser = chiusura transizione (niente bianco tra documenti) */
html {
  background-color: #050a10;
}

/* Transizione: sgretolamento + onda; uscita termina su nero pieno */

html.pt-transition-lock,
html.pt-transition-lock body {
  overflow: hidden;
}

#page-transition {
  position: fixed;
  inset: 0;
  z-index: 2147483000;
  pointer-events: none;
  visibility: hidden;
}

#page-transition.is-active {
  visibility: visible;
  pointer-events: all;
}

#page-transition.is-active .page-transition__dim {
  animation: pt-dim 0.68s cubic-bezier(0.32, 0.02, 0.22, 1) forwards;
}

#page-transition.is-active .page-transition__chunk {
  animation: pt-chunk-crumble 0.64s cubic-bezier(0.28, 0.04, 0.22, 1) forwards;
}

#page-transition.is-active .page-transition__wave {
  animation: pt-wave 0.7s cubic-bezier(0.3, 0.05, 0.2, 1) forwards;
}

#page-transition.is-active .page-transition__trail {
  animation: pt-trail 0.72s cubic-bezier(0.3, 0.05, 0.2, 1) 0.02s forwards;
}

.page-transition__dim {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: #050a10;
  opacity: 0;
}

/* Finisce su nero opaco: stesso colore della pagina successiva */
@keyframes pt-dim {
  0% {
    opacity: 0;
  }
  48% {
    opacity: 0.78;
  }
  100% {
    opacity: 1;
  }
}

.page-transition__crumble {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: grid;
  pointer-events: none;
}

.page-transition__chunk {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
  min-width: 0;
  font-family: ui-monospace, "Cascadia Code", "Segoe UI", monospace;
  font-size: clamp(0.45rem, 1.1vw, 0.75rem);
  font-weight: 600;
  line-height: 1;
  color: rgba(0, 240, 255, 0.35);
  text-shadow: 0 0 8px rgba(0, 255, 200, 0.25);
  background: linear-gradient(
    160deg,
    rgba(8, 22, 32, 0.88) 0%,
    rgba(4, 12, 20, 0.92) 100%
  );
  box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.07);
  opacity: 1;
  will-change: transform, opacity, filter;
}

@keyframes pt-chunk-crumble {
  0% {
    opacity: 1;
    transform: translate(0, 0) scale(1) rotate(0deg);
    filter: blur(0);
  }
  55% {
    opacity: 0.8;
    filter: blur(0.2px);
  }
  100% {
    opacity: 0;
    transform: translate(var(--drift-x, 0px), var(--drift-y, 8px))
      scale(var(--sc, 0.62)) rotate(var(--rot, 3deg));
    filter: blur(1.5px);
  }
}

.page-transition__trail {
  position: absolute;
  top: -15%;
  bottom: -15%;
  left: 0;
  width: 40%;
  z-index: 2;
  transform: translateX(130%);
  opacity: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(0, 200, 255, 0.12) 35%,
    rgba(0, 255, 255, 0.22) 50%,
    rgba(0, 200, 255, 0.12) 65%,
    transparent 100%
  );
  filter: blur(22px);
  will-change: transform, opacity;
}

.page-transition__wave {
  position: absolute;
  top: -10%;
  bottom: -10%;
  left: 0;
  width: 55%;
  z-index: 3;
  transform: translateX(120%);
  opacity: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(0, 240, 255, 0.08) 25%,
    rgba(0, 255, 255, 0.35) 45%,
    rgba(0, 220, 255, 0.5) 50%,
    rgba(0, 240, 255, 0.35) 55%,
    rgba(0, 240, 255, 0.08) 75%,
    transparent 100%
  );
  filter: blur(1px);
  will-change: transform, opacity;
}

@keyframes pt-wave {
  0% {
    transform: translateX(115%);
    opacity: 0;
  }
  18% {
    opacity: 0.75;
  }
  100% {
    transform: translateX(-120%);
    opacity: 0.08;
  }
}

@keyframes pt-trail {
  0% {
    transform: translateX(125%);
    opacity: 0;
  }
  22% {
    opacity: 0.65;
  }
  100% {
    transform: translateX(-118%);
    opacity: 0;
  }
}

/* Entrata: dissolvenza morbida e rapida dal colore di chiusura transizione */
@keyframes pt-page-reveal {
  0% {
    opacity: 0;
    transform: translateY(2px);
    filter: blur(2px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

html.pt-page-enter body {
  animation: pt-page-reveal 0.48s cubic-bezier(0.22, 1, 0.36, 1) both;
}

/* Home: solo dissolvenza (niente blur/transform → evita lo scatto finale) */
@keyframes pt-page-reveal-home {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

html.pt-page-enter-home body {
  animation: pt-page-reveal-home 0.52s cubic-bezier(0.33, 0, 0.2, 1) both;
  transform: none;
  filter: none;
}

@media (prefers-reduced-motion: reduce) {
  #page-transition.is-active .page-transition__dim,
  #page-transition.is-active .page-transition__wave,
  #page-transition.is-active .page-transition__trail,
  #page-transition.is-active .page-transition__chunk {
    animation-duration: 0.01ms !important;
    animation-delay: 0s !important;
  }

  html.pt-page-enter body,
  html.pt-page-enter-home body {
    animation: none !important;
    opacity: 1 !important;
    filter: none !important;
    transform: none !important;
  }
}

/* Tema chiaro: chiusura transizione su bianco/sporco (non nero) */
html[data-theme="light"] .page-transition__dim {
  background: #f9f9f7;
}

html[data-theme="light"] .page-transition__chunk {
  color: rgba(0, 106, 120, 0.4);
  text-shadow: 0 0 6px rgba(0, 106, 120, 0.12);
  background: linear-gradient(
    160deg,
    rgba(255, 255, 255, 0.96) 0%,
    rgba(236, 244, 250, 0.98) 100%
  );
  box-shadow: inset 0 0 0 1px rgba(0, 106, 120, 0.1);
}

html[data-theme="light"] .page-transition__trail {
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(0, 138, 154, 0.1) 35%,
    rgba(0, 170, 186, 0.2) 50%,
    rgba(0, 138, 154, 0.1) 65%,
    transparent 100%
  );
}

html[data-theme="light"] .page-transition__wave {
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(0, 150, 170, 0.07) 25%,
    rgba(0, 190, 205, 0.14) 45%,
    rgba(0, 210, 225, 0.2) 50%,
    rgba(0, 190, 205, 0.14) 55%,
    rgba(0, 150, 170, 0.07) 75%,
    transparent 100%
  );
}