/* ==========================================================================
   Modo túnel dos projetos (js/components/project-tunnel.js)
   Espaço em canvas (.tunnel__space) + projetos em 3D (.tunnel__scene, perspective
   definida pelo JavaScript, igual à projeção do canvas) + controles (.tunnel__ui).
   A abertura é um portal que nasce no aparelho clicado (--ox, --oy) e cobre a tela.
   ========================================================================== */

.has-tunnel {
  overflow: hidden;
}

.tunnel {
  position: fixed;
  inset: 0;
  z-index: 230;
  overflow: hidden;
  background: var(--void);
  opacity: var(--fade, 1);
  clip-path: circle(calc(var(--open, 1) * var(--rmax, 150vmax)) at var(--ox, 50%) var(--oy, 50%));
}

.tunnel[hidden] {
  display: none;
}

.tunnel__space {
  position: absolute;
  inset: 0;
  width: 100%;
  max-width: none;
  height: 100%;
}

.tunnel__scene {
  position: absolute;
  inset: 0;
  perspective-origin: 50% 42%;
  pointer-events: none;
}

.tunnel__item {
  --accent: var(--volt);
  position: absolute;
  top: calc(42% - var(--fh, 44vh) / 2);
  left: 50%;
  display: grid;
  justify-items: center;
  gap: clamp(0.9rem, 2.2vh, 1.5rem);
  width: min(66rem, 90vw);
  margin-left: calc(min(66rem, 90vw) / -2);
  transform-origin: 50% calc(var(--fh, 44vh) / 2);
  pointer-events: auto;
  will-change: transform, opacity;
}

/* moldura: navegador com a página inteira rolando e o celular à frente */
.tunnel__frame {
  position: relative;
  width: min(100%, calc(39vh * 1.6 + 5rem));
  padding: 0 8% 4% 0;
}

.tunnel__frame .device--desktop {
  translate: none;
  box-shadow:
    inset 0 1px 0 rgb(236 241 255 / 0.08),
    0 60px 120px -50px rgb(0 0 0 / 0.95),
    0 0 90px -30px color-mix(in oklab, var(--volt) 70%, var(--accent));
}

.tunnel__frame .device--phone {
  width: 21%;
  translate: none;
}

.tunnel__item.is-current .device {
  border-color: rgb(29 143 240 / 0.45);
}

/* posição da página dentro da tela */
.tunnel__scrub {
  position: absolute;
  top: 28px;
  bottom: 4%;
  left: -14px;
  width: 2px;
  border-radius: 2px;
  background: var(--line-strong);
}

.tunnel__scrub span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(var(--volt-hi), var(--volt));
  box-shadow: 0 0 8px var(--volt-hi);
  transform: scaleY(0.04);
  transform-origin: top;
}

/* informações */
.tunnel__info {
  display: grid;
  justify-items: center;
  gap: 0.55rem;
  max-width: 48rem;
  text-align: center;
  transition: opacity 0.4s var(--ease-out);
}

.tunnel__item:not(.is-current) .tunnel__info {
  opacity: 0.45;
}

.tunnel__category {
  color: var(--volt-hi);
  font-size: var(--fs-micro);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.tunnel__name {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 1rem + 2.2vw, 3rem);
  font-weight: 400;
  line-height: 1;
}

.tunnel__desc {
  max-width: 56ch;
  color: var(--frost-soft);
  font-size: var(--fs-small);
  line-height: 1.6;
}

.tunnel__tags {
  justify-content: center;
}

/* atalhos para as seções reais do site */
.tunnel__chapters {
  display: grid;
  justify-items: center;
  gap: 0.45rem;
  max-width: 100%;
  margin-top: 0.3rem;
}

.tunnel__chapters p {
  color: var(--mist);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.tunnel__chapters ul {
  display: flex;
  gap: 0.4rem;
  max-width: min(100%, 60rem);
  padding: 0.15rem 0.25rem 0.4rem;
  overflow-x: auto;
  list-style: none;
  scrollbar-width: thin;
}

.tunnel__chapter {
  max-width: 18rem;
  padding: 0.32rem 0.85rem;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  background: rgb(236 241 255 / 0.03);
  color: var(--frost-soft);
  font-size: 0.78rem;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: border-color 0.25s var(--ease-out), background-color 0.25s var(--ease-out), color 0.25s var(--ease-out);
}

.tunnel__chapter:hover,
.tunnel__chapter.is-active {
  border-color: rgb(29 143 240 / 0.7);
  background: rgb(29 143 240 / 0.14);
  color: var(--frost);
}

/* controles ---------------------------------------------------------------- */

.tunnel__ui {
  position: absolute;
  inset: 0;
  z-index: 300;
  pointer-events: none;
}

.tunnel__top {
  position: absolute;
  top: max(14px, env(safe-area-inset-top));
  right: var(--gutter);
  left: var(--gutter);
  display: flex;
  align-items: center;
  gap: 1rem;
  pointer-events: auto;
}

.tunnel__count {
  margin-left: auto;
  color: var(--mist);
  font-size: var(--fs-micro);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.12em;
}

.tunnel__count span:first-child {
  color: var(--frost);
}

.tunnel__arrows {
  display: flex;
  gap: 0.5rem;
}

.tunnel__index {
  position: absolute;
  top: 50%;
  left: var(--gutter);
  display: grid;
  gap: 0.2rem;
  padding: 0;
  list-style: none;
  pointer-events: auto;
  translate: 0 -50%;
}

.tunnel__index button {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.3rem 0.2rem;
  color: var(--graphite);
  font-size: 0.78rem;
  text-align: left;
  transition: color 0.25s var(--ease-out);
}

.tunnel__index button span {
  font-variant-numeric: tabular-nums;
}

.tunnel__index button:hover {
  color: var(--frost-soft);
}

.tunnel__index button[aria-current="true"] {
  color: var(--frost);
}

.tunnel__index button[aria-current="true"] span {
  color: var(--volt-hi);
}

.tunnel__hint {
  position: absolute;
  left: 50%;
  color: var(--mist);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  white-space: nowrap;
  translate: -50% 0;
}

/* o cartão clicado na galeria se aproxima enquanto o portal abre */
.project-tile.is-launching .project-tile__media {
  transform: scale(1.06);
  filter: brightness(1.5);
  transition: transform 0.6s var(--ease-out), filter 0.6s var(--ease-out);
}

/* telas menores: lista de projetos escondida (contador e setas bastam) */
@media (max-width: 1100px) {
  .tunnel__index {
    display: none;
  }
}

@media (max-width: 860px) {
  .tunnel__hint {
    display: none;
  }
}

/* telas baixas: só o essencial embaixo da tela do projeto */
@media (max-height: 760px) {
  .tunnel__desc {
    display: none;
  }

  .tunnel__chapters p {
    display: none;
  }
}

@media (max-width: 700px) {
  .tunnel__item {
    width: 94vw;
    margin-left: -47vw;
  }

  .tunnel__frame {
    width: 100%;
    padding: 0 12% 8% 0;
  }

  .tunnel__frame .device--phone {
    width: 30%;
  }

  .tunnel__desc {
    display: none;
  }

  /* no celular, só o projeto atual mostra os textos */
  .tunnel__item:not(.is-current) .tunnel__info {
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .tunnel {
    clip-path: none;
  }
}

/* Botão X: fecha o túnel e volta aos projetos ------------------------------- */
.tunnel__close {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  flex: none;
  border: 1px solid rgb(236 241 255 / 0.32);
  border-radius: 50%;
  background: rgb(3 8 18 / 0.72);
  color: var(--frost);
  box-shadow: 0 0 0 4px rgb(29 143 240 / 0.08), 0 10px 30px -10px rgb(29 143 240 / 0.7);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  transition: border-color 0.25s var(--ease-out), background-color 0.25s var(--ease-out), rotate 0.4s var(--ease-out);
}

.tunnel__close svg {
  width: 22px;
  height: 22px;
}

.tunnel__close:hover,
.tunnel__close:focus-visible {
  border-color: var(--volt-hi);
  background: rgb(21 109 220 / 0.25);
  rotate: 90deg;
}

/* demonstração em vídeo, por cima da captura (modo "Em movimento") */
.device__video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  background: #0b0f18;
  transition: opacity 0.4s var(--ease-out);
}

.tunnel__item.is-page .device__video {
  opacity: 0;
  pointer-events: none;
}

/* no modo "Em movimento" a página do desktop não rola por baixo (só o celular) */
.tunnel__item:not(.is-page) .tunnel__scrub,
.tunnel__item:not(.is-page) .tunnel__chapters {
  opacity: 0.45;
}

.tunnel__modes {
  display: inline-flex;
  gap: 0.25rem;
  padding: 0.25rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  background: rgb(3 8 18 / 0.5);
}

.tunnel__modes button {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-pill);
  color: var(--mist);
  font-size: 0.8rem;
  font-weight: 600;
  transition: color 0.25s var(--ease-out), background-color 0.25s var(--ease-out);
}

.tunnel__modes button svg {
  width: 12px;
  height: 12px;
}

.tunnel__modes button[aria-pressed="true"] {
  background: linear-gradient(180deg, rgb(29 143 240 / 0.35), rgb(21 109 220 / 0.2));
  color: var(--frost);
}