/* ==========================================================================
   VISOR DE FOTOS

   Uma camada acima de tudo (o cabeçalho é 100, o menu 120, o ponteiro 500).
   Fundo quase opaco: a foto é a única coisa na tela. Os vídeos do congresso
   ficam em css/galeria-videos.css.
   ========================================================================== */

/* miniatura que abre em tela cheia */
.ampliar { cursor: zoom-in; }
.ampliar:focus-visible { outline: 2px solid var(--flame); outline-offset: 4px; }

.lb {
  position: fixed;
  inset: 0;
  z-index: 300;
  padding:
    calc(env(safe-area-inset-top, 0px) + clamp(.8rem, 2vw, 1.6rem))
    clamp(.8rem, 2vw, 1.6rem)
    calc(env(safe-area-inset-bottom, 0px) + clamp(.8rem, 2vw, 1.6rem));
}
.lb[hidden] { display: none; }

.lb__bg {
  position: absolute;
  inset: 0;
  background: #040100;
  opacity: 0;
  transition: opacity .5s var(--ease);
}
.lb.on .lb__bg { opacity: 1; }

/* botão de fechar */
.lb__x {
  position: absolute;
  z-index: 3;
  top: calc(env(safe-area-inset-top, 0px) + clamp(.6rem, 1.6vw, 1.4rem));
  right: clamp(.6rem, 1.6vw, 1.4rem);
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  color: var(--fg-2);
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(0, 0, 0, .4);
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease),
              transform var(--t-fast) var(--ease), opacity .35s var(--ease);
}
.lb__x:hover { color: var(--white); border-color: var(--white); transform: rotate(90deg); }
.lb__x svg { width: 17px; height: 17px; }

.lb svg { fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; }

/* --------------------------------------------------------------------------
   Visor de fotos
   -------------------------------------------------------------------------- */

.lb {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  gap: clamp(.8rem, 2vw, 1.4rem);
}

.lb__stage {
  position: relative;
  z-index: 2;
  margin: 0;
  min-height: 0;
  display: grid;
  place-items: center;
}

.lb__img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  background: var(--dark);
  box-shadow: 0 30px 90px rgba(0, 0, 0, .8);
}

.lb__bar {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 1rem 1.6rem;
  padding-top: clamp(.6rem, 1.4vw, 1rem);
  border-top: 1px solid var(--line);
}

.lb__cap {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .3rem .9rem;
  font-size: var(--fs-data);
  color: var(--fg-3);
}
.lb__n {
  font-variation-settings: "wdth" 92, "wght" 800;
  letter-spacing: .06em;
  color: var(--ember);
  font-variant-numeric: tabular-nums;
}
.lb__t { max-width: 72ch; }

.lb__setas { display: flex; gap: .5rem; }
.lb__nav {
  width: 52px;
  height: 46px;
  display: grid;
  place-items: center;
  color: var(--fg-2);
  border: 1px solid var(--line);
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease),
              background var(--t-fast) var(--ease);
}
.lb__nav:hover { color: var(--black); background: var(--white); border-color: var(--white); }
.lb__nav svg { width: 18px; height: 18px; }

/* --------------------------------------------------------------------------
   Telas pequenas
   -------------------------------------------------------------------------- */

@media (max-width: 760px) {
  .lb__bar { grid-template-columns: 1fr; }
  .lb__setas { justify-content: space-between; }
  .lb__nav { flex: 1; }
  .lb__t {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
}

@media (max-width: 430px) {
  .lb__x { width: 40px; height: 40px; }
}

/* quem pediu menos movimento não recebe a abertura animada */
@media (prefers-reduced-motion: reduce) {
  .lb__bg { transition: none; }
}