/* ============================================
   ABEG — Galeria de Fotos Interativa
   Premio Sigmundo Golombek 2025
   ============================================ */

/* --- Reset e variáveis --- */
.abeg-galeria *,
.abeg-galeria *::before,
.abeg-galeria *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.abeg-galeria {
  --abeg-primaria: #1a5276;
  --abeg-secundaria: #2e86c1;
  --abeg-accent: #d4ac0d;
  --abeg-bg: #f8f9fa;
  --abeg-texto: #2c3e50;
  --abeg-texto-claro: #7f8c8d;
  --abeg-borda: #dce1e5;
  --abeg-sombra: rgba(0, 0, 0, 0.08);
  --abeg-radius: 6px;
  --abeg-transicao: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);

  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: var(--abeg-texto);
  max-width: 100%;
  margin: 2rem 0;
}

/* --- Título da galeria --- */
.abeg-galeria__titulo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.2rem;
  padding-bottom: 0.8rem;
  border-bottom: 2px solid var(--abeg-primaria);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--abeg-primaria);
  line-height: 1.3;
}

.abeg-galeria__titulo svg {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
}

/* --- Contador de fotos --- */
.abeg-galeria__contador {
  font-size: 0.85rem;
  color: var(--abeg-texto-claro);
  margin-bottom: 1rem;
}

/* --- Grade de miniaturas --- */
.abeg-galeria__grade {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 10px;
  margin-bottom: 1.5rem;
}

@media (max-width: 600px) {
  .abeg-galeria__grade {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 6px;
  }
}

@media (min-width: 900px) {
  .abeg-galeria__grade {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
  }
}

/* --- Item da grade (miniatura) --- */
.abeg-galeria__item {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--abeg-radius);
  overflow: hidden;
  cursor: pointer;
  background: #e9ecef;
  box-shadow: 0 1px 4px var(--abeg-sombra);
  transition: transform var(--abeg-transicao), box-shadow var(--abeg-transicao);
}

.abeg-galeria__item:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.abeg-galeria__item:focus-visible {
  outline: 3px solid var(--abeg-secundaria);
  outline-offset: 2px;
}

.abeg-galeria__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.abeg-galeria__item:hover img {
  transform: scale(1.08);
}

/* --- Número da foto --- */
.abeg-galeria__numero {
  position: absolute;
  top: 6px;
  left: 6px;
  background: rgba(26, 82, 118, 0.85);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 3px;
  line-height: 1.4;
  pointer-events: none;
  z-index: 2;
}

/* --- Legenda na miniatura --- */
.abeg-galeria__legenda-thumb {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.75));
  color: #fff;
  font-size: 0.85rem;
  font-weight: 500;
  line-height: 1.4;
  padding: 2rem 10px 8px;
  pointer-events: none;
  z-index: 2;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity var(--abeg-transicao), transform var(--abeg-transicao);
}

.abeg-galeria__item:hover .abeg-galeria__legenda-thumb,
.abeg-galeria__item:focus .abeg-galeria__legenda-thumb {
  opacity: 1;
  transform: translateY(0);
}

/* --- Indicador de carregamento --- */
.abeg-galeria__loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #e9ecef;
  z-index: 1;
  transition: opacity 0.3s;
}

.abeg-galeria__loading.--oculto {
  opacity: 0;
  pointer-events: none;
}

.abeg-galeria__spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--abeg-borda);
  border-top-color: var(--abeg-secundaria);
  border-radius: 50%;
  animation: abeg-spin 0.8s linear infinite;
}

@keyframes abeg-spin {
  to { transform: rotate(360deg); }
}

/* ============================================
   LIGHTBOX
   ============================================ */
.abeg-lightbox {
  position: fixed;
  inset: 0;
  z-index: 100000;
  background: rgba(0, 0, 0, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s, visibility 0.35s;
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}

.abeg-lightbox.--ativo {
  opacity: 1;
  visibility: visible;
}

.abeg-lightbox__container {
  position: relative;
  max-width: 92vw;
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.abeg-lightbox__img {
  max-width: 92vw;
  max-height: 78vh;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.35s, transform 0.35s;
}

.abeg-lightbox__img.--visivel {
  opacity: 1;
  transform: scale(1);
}

/* --- Legenda no lightbox --- */
.abeg-lightbox__legenda {
  color: #fff;
  font-size: 1.15rem;
  font-weight: 400;
  text-align: center;
  margin-top: 1rem;
  padding: 0 1.5rem;
  max-width: 800px;
  line-height: 1.55;
  opacity: 0.95;
  min-height: 1.5em;
  letter-spacing: 0.01em;
}

.abeg-lightbox__legenda:empty {
  display: none;
}

/* --- Contador no lightbox --- */
.abeg-lightbox__contagem {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
  margin-top: 0.4rem;
  letter-spacing: 0.05em;
}

/* --- Botões do lightbox --- */
.abeg-lightbox__btn {
  position: absolute;
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  padding: 12px;
  border-radius: 50%;
  transition: color 0.2s, background 0.2s;
  line-height: 0;
}

.abeg-lightbox__btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.abeg-lightbox__btn--fechar {
  top: -8px;
  right: -44px;
}

.abeg-lightbox__btn--anterior {
  left: -60px;
  top: 50%;
  transform: translateY(-50%);
}

.abeg-lightbox__btn--proximo {
  right: -60px;
  top: 50%;
  transform: translateY(-50%);
}

/* Mobile: botões dentro da área visível */
@media (max-width: 768px) {
  .abeg-lightbox__btn--fechar {
    position: fixed;
    top: 12px;
    right: 12px;
  }

  .abeg-lightbox__btn--anterior {
    position: fixed;
    left: 8px;
    top: 50%;
    transform: translateY(-50%);
  }

  .abeg-lightbox__btn--proximo {
    position: fixed;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
  }

  .abeg-lightbox__img {
    max-width: 96vw;
    max-height: 70vh;
  }
}

/* ============================================
   ANIMAÇÕES DE ENTRADA
   ============================================ */
.abeg-galeria__item {
  opacity: 0;
  transform: translateY(12px);
  animation: abeg-fadeUp 0.4s ease forwards;
}

@keyframes abeg-fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Delay escalonado para as primeiras 20 imagens */
.abeg-galeria__item:nth-child(1)  { animation-delay: 0.02s; }
.abeg-galeria__item:nth-child(2)  { animation-delay: 0.04s; }
.abeg-galeria__item:nth-child(3)  { animation-delay: 0.06s; }
.abeg-galeria__item:nth-child(4)  { animation-delay: 0.08s; }
.abeg-galeria__item:nth-child(5)  { animation-delay: 0.10s; }
.abeg-galeria__item:nth-child(6)  { animation-delay: 0.12s; }
.abeg-galeria__item:nth-child(7)  { animation-delay: 0.14s; }
.abeg-galeria__item:nth-child(8)  { animation-delay: 0.16s; }
.abeg-galeria__item:nth-child(9)  { animation-delay: 0.18s; }
.abeg-galeria__item:nth-child(10) { animation-delay: 0.20s; }
.abeg-galeria__item:nth-child(11) { animation-delay: 0.22s; }
.abeg-galeria__item:nth-child(12) { animation-delay: 0.24s; }
.abeg-galeria__item:nth-child(13) { animation-delay: 0.26s; }
.abeg-galeria__item:nth-child(14) { animation-delay: 0.28s; }
.abeg-galeria__item:nth-child(15) { animation-delay: 0.30s; }
.abeg-galeria__item:nth-child(16) { animation-delay: 0.32s; }
.abeg-galeria__item:nth-child(17) { animation-delay: 0.34s; }
.abeg-galeria__item:nth-child(18) { animation-delay: 0.36s; }
.abeg-galeria__item:nth-child(19) { animation-delay: 0.38s; }
.abeg-galeria__item:nth-child(20) { animation-delay: 0.40s; }