/* ==========================================
   ESTILOS GALERÍA FOTOGRÁFICA (INAH)
========================================== */

:root {
    --negro-puro: #000000;
    --negro-suave: #1a1a1a;
    --gris-oscuro: #333333;
    --gris-medio: #888888;
    --gris-claro: #f2f2f2;
    --blanco: #ffffff;
    --transicion: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background-color: var(--blanco);
    margin: 0; padding: 0;
    color: var(--negro-suave);
    line-height: 1.6;
}

.contenedor-principal {
    max-width: 1400px;
    margin: 60px auto;
    padding: 0 40px;
}

/* --- Títulos --- */
.titulo-seccion {
    font-size: 52px; font-weight: 800; margin: 0 0 10px 0;
    line-height: 1.1; letter-spacing: -2px; color: var(--negro-puro);
}

.subtitulo-seccion {
    font-size: 18px; color: var(--gris-medio); margin: 0 0 50px 0; max-width: 600px;
}

/* ==========================================
   PANEL ADMINISTRADOR
========================================== */
.panel-admin-rapido { background-color: var(--negro-puro); color: var(--blanco); border-radius: 16px; padding: 25px; margin-bottom: 50px; box-shadow: 0 10px 30px rgba(0,0,0,0.15); }
.alerta-exito { background-color: rgba(255, 255, 255, 0.1); color: #4ade80; padding: 15px; border-radius: 8px; margin-bottom: 20px; display: flex; align-items: center; gap: 12px; border: 1px solid rgba(255, 255, 255, 0.2); }
.caja-sincronizar p { margin: 0; font-weight: 400; text-transform: uppercase; letter-spacing: 2px; font-size: 12px; opacity: 0.7; }
.caja-sincronizar { display: flex; justify-content: space-between; align-items: center; }
.btn-sincronizar { display: inline-flex; align-items: center; gap: 10px; background-color: var(--blanco); color: var(--negro-puro); padding: 12px 24px; text-decoration: none; border-radius: 8px; font-weight: 700; font-size: 14px; transition: var(--transicion); }
.btn-sincronizar:hover { transform: scale(1.03); background-color: var(--gris-claro); }

/* ==========================================
   GALERÍA MASONRY (Efecto Collage Pinterest)
========================================== */
.galeria-masonry {
    column-count: 3;
    column-gap: 20px;
    width: 100%;
}

.item-masonry {
    break-inside: avoid;
    margin-bottom: 20px;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    cursor: pointer;
    background-color: var(--gris-claro);
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    /* Fuerza al navegador a no romper las imágenes entre columnas */
    display: inline-block; 
    width: 100%;
}

.item-masonry img {
    width: 100%;
    display: block;
    transition: transform 0.4s ease;
}

/* Efecto Hover en las fotos */
.overlay-hover {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(0,0,0,0.4);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; transition: opacity 0.3s ease;
    pointer-events: none; /* Permite que el clic pase directo a la imagen */
}

.overlay-hover span {
    color: white; font-size: 40px;
    transform: scale(0.5); transition: transform 0.3s ease;
}

.item-masonry:hover .overlay-hover { opacity: 1; }
.item-masonry:hover .overlay-hover span { transform: scale(1); }
.item-masonry:hover img { transform: scale(1.03); }

/* ==========================================
   VISOR LIGHTBOX (Modal Oscuro)
========================================== */
.lightbox {
    display: none; /* Oculto por defecto */
    position: fixed; z-index: 9999;
    left: 0; top: 0; width: 100%; height: 100%;
    background-color: rgba(0,0,0,0.9);
    backdrop-filter: blur(5px);
    opacity: 0; transition: opacity 0.3s ease;
    align-items: center; justify-content: center;
}

.lightbox.mostrar { display: flex; opacity: 1; }

.cerrar-lightbox {
    position: absolute; top: 20px; right: 30px;
    color: white; font-size: 40px; cursor: pointer;
    z-index: 10000; transition: transform 0.3s ease;
}

.cerrar-lightbox:hover { transform: rotate(90deg); color: #ccc; }

.lightbox-contenido {
    display: flex; flex-direction: column; align-items: center;
    max-width: 90%; max-height: 90vh;
}

.lightbox-contenido img {
    max-width: 100%; max-height: 70vh;
    border-radius: 8px; box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    object-fit: contain;
}

.lightbox-info { text-align: center; color: white; margin-top: 20px; max-width: 800px; }
.lightbox-info h3 { font-size: 24px; margin: 0 0 10px 0; font-weight: 700; }
.lightbox-info p { font-size: 16px; color: #cccccc; margin: 0; line-height: 1.6; }

/* ==========================================
   PAGINACIÓN MINIMALISTA
========================================== */
.paginacion-minimalista {
    display: flex; justify-content: center; align-items: center; gap: 20px;
    margin-top: 60px; padding-top: 30px; border-top: 1px solid var(--gris-claro);
}
.btn-pag {
    display: inline-flex; align-items: center; gap: 5px; padding: 10px 20px;
    background-color: var(--negro-puro); color: var(--blanco);
    text-decoration: none; border-radius: 8px; font-weight: 600; font-size: 14px; transition: var(--transicion);
}
.btn-pag:hover:not(.inactivo) { background-color: var(--gris-oscuro); transform: translateY(-2px); box-shadow: 0 5px 15px rgba(0,0,0,0.15); }
.btn-pag.inactivo { background-color: var(--gris-claro); color: var(--gris-medio); cursor: not-allowed; box-shadow: none; border: 1px solid var(--gris-claro); }
.indicador-pagina { font-size: 15px; color: var(--gris-medio); background-color: var(--blanco); padding: 10px 20px; border-radius: 8px; border: 2px solid var(--negro-puro); }
.indicador-pagina strong { color: var(--negro-puro); }

/* ==========================================
   RESPONSIVE (MÓVILES)
========================================== */
@media (max-width: 1024px) {
    .galeria-masonry { column-count: 2; }
}

@media (max-width: 768px) {
    .contenedor-principal { padding: 40px 20px; }
    .titulo-seccion { font-size: 32px; letter-spacing: -1px; }
    .subtitulo-seccion { font-size: 16px; margin-bottom: 30px; }
    
    .galeria-masonry { column-count: 1; } /* En celular se apilan a 1 columna */
    
    .lightbox-info h3 { font-size: 20px; }
    .lightbox-info p { font-size: 14px; }
    .lightbox-contenido img { max-height: 60vh; }
    
    .caja-sincronizar { flex-direction: column; gap: 10px; text-align: center; }

    .paginacion-minimalista { flex-direction: column; gap: 15px; margin-top: 40px; }
    .btn-pag { width: 100%; justify-content: center; }
    .indicador-pagina { order: -1; width: 100%; text-align: center; box-sizing: border-box; }
}