/* ==========================================================================
   ARTSHIVAYA — estudo de um conjunto (painel de tela cheia) e visor de fotos
   ========================================================================== */

.estudo {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100dvh;
  max-width: none;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  color: var(--areia);
  background:
    radial-gradient(110% 50% at 100% 0%, color-mix(in srgb, var(--cor, #6e1c1e) 34%, transparent), transparent 70%),
    linear-gradient(170deg, #1a0506, #140405 60%);
  overflow: hidden;
}
.estudo::backdrop { background: var(--vinho-950); }
.estudo[open] { animation: estudo-abre .75s var(--suave) both; }
.estudo.sem-anim[open] { animation: none; }
.estudo.fechando { animation: estudo-fecha .3s ease-in both; }
@keyframes estudo-abre { from { opacity: 0; transform: translateY(6%); } to { opacity: 1; transform: none; } }
@keyframes estudo-fecha { to { opacity: 0; transform: translateY(4%); } }

.estudo__barra {
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: calc(env(safe-area-inset-top) + .7rem) var(--margem) 1.4rem;
  background: linear-gradient(to bottom, rgba(20, 4, 5, .62), transparent);
  pointer-events: none;
}
.estudo__barra > * { pointer-events: auto; }
.estudo__posicao {
  font: 400 .66rem/1 var(--inscricao);
  letter-spacing: .32em;
  color: var(--creme);
  text-shadow: 0 1px 12px rgba(20, 4, 5, .9);
}

.estudo__rolagem {
  position: absolute;
  inset: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}
.estudo__conteudo { padding-bottom: calc(env(safe-area-inset-bottom) + 7rem); }

/* ---------- capa ---------- */
.estudo__capa { position: relative; }
.estudo__capa-foto {
  position: relative;
  width: 100%;
  aspect-ratio: 2 / 3;
  max-height: 94svh;
  overflow: hidden;
  background: linear-gradient(180deg, color-mix(in srgb, var(--cor, #6e1c1e) 46%, #1c0506), #140405);
}
.estudo__capa-foto img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 18%; }
.estudo__capa-foto::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, #140405 0%, rgba(20, 4, 5, .72) 16%, rgba(20, 4, 5, 0) 44%);
  pointer-events: none;
}
.estudo__lado { position: relative; z-index: 1; }
.estudo__capa-texto {
  position: relative;
  display: grid;
  gap: .75rem;
  margin-top: -6.4rem;
  padding: 0 var(--margem);
}
.estudo__colecao { font: 400 .64rem/1.3 var(--inscricao); letter-spacing: .28em; text-transform: uppercase; color: var(--ouro-400); }
.estudo__nome {
  font: italic 400 clamp(3.4rem, 17.5vw, 7.4rem)/.9 var(--serifa);
  letter-spacing: -.02em;
  color: var(--creme);
  text-wrap: balance;
}
.estudo__nome small {
  display: block;
  margin-bottom: .55rem;
  font: normal 400 .68rem/1 var(--inscricao);
  letter-spacing: .34em;
  text-transform: uppercase;
  color: var(--areia);
}
.estudo__algarismo {
  position: absolute;
  right: calc(var(--margem) - .3rem);
  top: -1.2rem;
  z-index: -1;
  font: 400 clamp(5.5rem, 30vw, 11rem)/.8 var(--inscricao);
  color: transparent;
  -webkit-text-stroke: 1px rgba(227, 187, 114, .3);
  pointer-events: none;
}

/* ---------- ficha ---------- */
.estudo__ficha { display: grid; gap: 1.5rem; max-width: 44rem; padding: 1.9rem var(--margem) 0; }
.estudo__descricao { font: 500 clamp(1.22rem, 4.7vw, 1.48rem)/1.44 var(--serifa); color: var(--creme); text-wrap: pretty; }

.estudo__querer { display: grid; gap: .8rem; }
.estudo__querer > p { font-size: .92rem; }
.estudo__querer .trio { background: linear-gradient(140deg, rgba(120, 33, 36, .4), rgba(40, 9, 10, .55)); }
.estudo__querer .trio button {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 3.1rem;
  padding: 0 .3rem;
  font: 400 .64rem/1 var(--inscricao);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--creme);
  transition: background .5s, color .4s;
  -webkit-tap-highlight-color: transparent;
}
.estudo__querer .trio button + button { border-left: 1px solid var(--vidro-borda); }
.estudo__querer .trio button:active { background: rgba(227, 187, 114, .2); }
@media (hover: hover) { .estudo__querer .trio button:hover { background: rgba(227, 187, 114, .16); color: var(--ouro-200); } }
.estudo__querer .trio .ponto-novo { position: absolute; top: .55rem; right: .6rem; margin: 0; }

/* ---------- blocos e mosaico ---------- */
.estudo__bloco { max-width: var(--largura); margin: 0 auto; padding: clamp(3rem, 9vw, 5.5rem) var(--margem) 0; }
.estudo__sub { display: grid; gap: .8rem; justify-items: start; }
.estudo__sub h3 { font: 400 clamp(2rem, 8vw, 3.2rem)/1.02 var(--serifa); color: var(--creme); }
.estudo__sub h3 em {
  background: var(--ouro-metal);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  padding-right: .06em;
}

.mosaico { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .5rem; margin-top: 1.5rem; grid-auto-flow: dense; }
.foto-botao {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 2 / 3;
  border-radius: 8px;
  overflow: hidden;
  background: var(--vinho-800);
  cursor: zoom-in;
  -webkit-tap-highlight-color: transparent;
}
.foto-botao img { width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity .8s ease, transform 1.4s var(--suave); }
.foto-botao img.ok { opacity: 1; }
.foto-botao--paisagem { aspect-ratio: 3 / 2; }
.mosaico .foto-botao--grande, .mosaico .foto-botao--paisagem { grid-column: span 2; }
@media (hover: hover) { .foto-botao:hover img { transform: scale(1.04); } }
.foto-botao:focus-visible { outline-offset: 3px; }

.estudo__completo { margin-top: 1.3rem; }
.estudo__mais {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 1.05rem 1rem 1.05rem 1.3rem;
  border-radius: 999px;
  border: 1px solid var(--vidro-borda);
  background: linear-gradient(140deg, rgba(120, 33, 36, .3), rgba(34, 8, 9, .4));
  font: 400 .68rem/1.3 var(--inscricao);
  letter-spacing: .18em;
  text-transform: uppercase;
  text-align: left;
  color: var(--creme);
  -webkit-tap-highlight-color: transparent;
}
.estudo__mais small { font: 400 .8rem/1 var(--sans); letter-spacing: 0; text-transform: none; color: var(--nevoa); margin-left: .5rem; }
.estudo__mais svg { flex: none; width: 2rem; height: 2rem; padding: .48rem; border-radius: 50%; border: 1px solid var(--linha-forte); color: var(--ouro-300); transition: transform .7s var(--suave); }
.estudo__mais[aria-expanded="true"] svg { transform: rotate(180deg); }

.miniaturas { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .35rem; margin-top: .9rem; grid-auto-flow: dense; }
.miniaturas[hidden] { display: none; }
.miniaturas .foto-botao { border-radius: 5px; }
.miniaturas .foto-botao--paisagem { grid-column: span 2; aspect-ratio: auto; height: 100%; min-height: 0; }

/* ---------- próximo conjunto ---------- */
.estudo__proximo {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 1.1rem;
  max-width: 44rem;
  margin: clamp(3rem, 9vw, 5rem) auto 0;
  padding: 0 var(--margem);
  text-decoration: none;
  color: inherit;
  -webkit-tap-highlight-color: transparent;
}
.estudo__proximo > span { display: grid; gap: .45rem; padding: 1.2rem 0; border-top: 1px solid var(--linha); border-bottom: 1px solid var(--linha); }
.estudo__proximo small { font: 400 .62rem/1 var(--inscricao); letter-spacing: .26em; text-transform: uppercase; color: var(--ouro-400); }
.estudo__proximo strong { font: italic 400 clamp(2rem, 9vw, 3rem)/1 var(--serifa); color: var(--creme); }
.estudo__proximo img { width: 5.2rem; aspect-ratio: 2 / 3; object-fit: cover; border-radius: 999px 999px 8px 8px; box-shadow: 0 0 0 1px var(--linha-forte); }

/* ---------- botão fixo do estudo ---------- */
.estudo__doca {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  z-index: 4;
  display: flex;
  justify-content: center;
  padding: 2.2rem var(--margem) calc(env(safe-area-inset-bottom) + .95rem);
  background: linear-gradient(to top, rgba(20, 4, 5, .97) 34%, rgba(20, 4, 5, 0));
  pointer-events: none;
}
.estudo__doca .botao { pointer-events: auto; width: min(100%, 24rem); }

/* ---------- visor de fotos ---------- */
.visor {
  position: absolute;
  inset: 0;
  z-index: 10;
  background: rgba(8, 1, 2, .98);
  animation: aparecer .35s ease both;
}
.visor[hidden] { display: none; }
.visor__palco {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: calc(env(safe-area-inset-top) + 4.3rem) 0 calc(env(safe-area-inset-bottom) + 4.6rem);
  touch-action: pan-y pinch-zoom;
}
.visor__palco img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  background-size: cover;
  background-position: center;
  user-select: none;
  -webkit-user-drag: none;
  animation: visor-foto .5s var(--suave) both;
}
@keyframes visor-foto { from { opacity: 0; transform: scale(.97); } to { opacity: 1; transform: none; } }
.visor__fechar { position: absolute; top: calc(env(safe-area-inset-top) + .7rem); right: var(--margem); z-index: 2; }
.visor__posicao {
  position: absolute;
  top: calc(env(safe-area-inset-top) + 1.65rem);
  left: var(--margem);
  z-index: 2;
  font: 400 .66rem/1 var(--inscricao);
  letter-spacing: .3em;
  color: var(--creme);
}
.visor__seta { position: absolute; bottom: calc(env(safe-area-inset-bottom) + .95rem); z-index: 2; }
.visor__seta--antes { left: calc(50% - 3.4rem); }
.visor__seta--antes svg { rotate: 180deg; }
.visor__seta--depois { right: calc(50% - 3.4rem); }

/* ------------------------------ telas largas ------------------------------ */
@media (min-width: 700px) {
  .mosaico { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .7rem; }
  .mosaico .foto-botao--grande:not(.foto-botao--paisagem) { grid-column: auto; }
  .mosaico .foto-botao.foto-botao--grande-tela { grid-column: span 2; grid-row: span 2; aspect-ratio: auto; height: 100%; }
  .miniaturas { grid-template-columns: repeat(5, minmax(0, 1fr)); gap: .5rem; }
  .estudo__mais { width: auto; min-width: 24rem; }
}
@media (min-width: 960px) {
  .estudo__barra { padding-inline: 1.6rem; background: none; }
  .estudo__capa { display: grid; grid-template-columns: minmax(0, 46%) minmax(0, 1fr); align-items: start; }
  .estudo__capa-foto { position: sticky; top: 0; height: 100dvh; max-height: none; aspect-ratio: auto; }
  .estudo__capa-foto::after { background: linear-gradient(to right, rgba(20, 4, 5, 0) 62%, #140405 100%), linear-gradient(to top, rgba(20, 4, 5, .6), rgba(20, 4, 5, 0) 30%); }
  .estudo__lado { display: grid; align-content: center; gap: 1rem; min-height: 100dvh; padding: 6.5rem clamp(2rem, 5vw, 5rem) 6rem 0; }
  .estudo__capa-texto { margin-top: 0; padding: 0 0 0 clamp(1rem, 3vw, 3rem); }
  .estudo__nome { font-size: clamp(5rem, 9vw, 9.5rem); margin-left: -1.4rem; }
  .estudo__algarismo { right: 0; top: -5rem; font-size: clamp(9rem, 15vw, 15rem); }
  .estudo__ficha { padding: 1.4rem 0 0 clamp(1rem, 3vw, 3rem); }
  .estudo__doca { left: auto; right: 0; width: 54%; justify-content: flex-end; padding-right: clamp(2rem, 5vw, 5rem); background: none; }
  .estudo__doca .botao { width: auto; }
  .miniaturas { grid-template-columns: repeat(7, minmax(0, 1fr)); }
  .visor__seta { top: 50%; bottom: auto; translate: 0 -50%; }
  .visor__seta--antes { left: 1.6rem; }
  .visor__seta--depois { right: 1.6rem; }
  .visor__palco { padding: 4.5rem 6rem; }
}