/* =========================================
   GALERÍA ESTÁNDAR
========================================= */

.galeria-estandar {
    --galeria-color-texto: #111827;
    --galeria-color-secundario: #64748b;
    --galeria-color-acento: #2563eb;
    --galeria-color-blanco: #ffffff;
    --galeria-radio: 14px;

    width: min(100% - 40px, 1200px);
    margin-inline: auto;
    padding-block: 80px;
}

/* =========================================
   ENCABEZADO
========================================= */

.galeria-estandar__encabezado {
    max-width: 650px;
    margin-bottom: 36px;
    animation: aparecerEncabezado 0.7s ease both;
}

.galeria-estandar__etiqueta {
    display: block;
    margin-bottom: 8px;
    color: var(--galeria-color-acento);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.galeria-estandar__titulo {
    margin: 0;
    color: var(--galeria-color-texto);
    font-size: clamp(2rem, 4vw, 3.2rem);
    line-height: 1.1;
}

.galeria-estandar__descripcion {
    margin: 16px 0 0;
    color: var(--galeria-color-secundario);
    font-size: 1.05rem;
    line-height: 1.7;
}

/* =========================================
   CUADRÍCULA
========================================= */

.galeria-estandar__grid {
    width: 90%;
    margin: auto;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

/* =========================================
   TARJETA
========================================= */

.galeria-estandar__item {
    position: relative;
    display: block;
    overflow: hidden;
    border-radius: var(--galeria-radio);
    background-color: #e5e7eb;
    aspect-ratio: 4 / 3;
    isolation: isolate;
    opacity: 0;
    animation: entradaImagen 0.7s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

/* Animación escalonada */

.galeria-estandar__item:nth-child(1) {
    animation-delay: 0.08s;
}

.galeria-estandar__item:nth-child(2) {
    animation-delay: 0.14s;
}

.galeria-estandar__item:nth-child(3) {
    animation-delay: 0.2s;
}

.galeria-estandar__item:nth-child(4) {
    animation-delay: 0.26s;
}

.galeria-estandar__item:nth-child(5) {
    animation-delay: 0.32s;
}

.galeria-estandar__item:nth-child(6) {
    animation-delay: 0.38s;
}

.galeria-estandar__item:nth-child(7) {
    animation-delay: 0.44s;
}

.galeria-estandar__item:nth-child(8) {
    animation-delay: 0.5s;
}

/* Imagen */

.galeria-estandar__item img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    transition:
        transform 0.6s cubic-bezier(0.22, 1, 0.36, 1),
        filter 0.5s ease;
}

/* Capa oscura */

.galeria-estandar__item::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 1;
    background: linear-gradient(
        180deg,
        transparent 30%,
        rgba(0, 0, 0, 0.72) 100%
    );
    opacity: 0.75;
    transition: opacity 0.4s ease;
}

/* =========================================
   TEXTO
========================================= */

.galeria-estandar__contenido {
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 2;
    padding: 20px;
    color: var(--galeria-color-blanco);
    transform: translateY(8px);
    transition: transform 0.4s ease;
}

.galeria-estandar__contenido span {
    display: block;
    margin-bottom: 6px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    opacity: 0.85;
}

.galeria-estandar__contenido h3 {
    margin: 0;
    font-size: 1.15rem;
    line-height: 1.25;
}

/* =========================================
   HOVER
========================================= */

.galeria-estandar__item:hover img,
.galeria-estandar__item:focus-visible img {
    transform: scale(1.07);
    filter: saturate(1.1);
}

.galeria-estandar__item:hover::after,
.galeria-estandar__item:focus-visible::after {
    opacity: 1;
}

.galeria-estandar__item:hover .galeria-estandar__contenido,
.galeria-estandar__item:focus-visible .galeria-estandar__contenido {
    transform: translateY(0);
}

.galeria-estandar__item:focus-visible {
    outline: 3px solid var(--galeria-color-acento);
    outline-offset: 4px;
}

/* =========================================
   ANIMACIONES
========================================= */

@keyframes entradaImagen {
    from {
        opacity: 0;
        transform: translateY(28px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes aparecerEncabezado {
    from {
        opacity: 0;
        transform: translateY(18px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* =========================================
   TABLET
========================================= */

@media (max-width: 950px) {
    .galeria-estandar__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

/* =========================================
   MÓVIL
========================================= */

@media (max-width: 560px) {
    .galeria-estandar {
        width: min(100% - 28px, 1200px);
        padding-block: 48px;
    }

    .galeria-estandar__encabezado {
        margin-bottom: 26px;
    }

    .galeria-estandar__grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .galeria-estandar__contenido {
        padding: 18px;
    }
}

/* =========================================
   REDUCCIÓN DE MOVIMIENTO
========================================= */

@media (prefers-reduced-motion: reduce) {
    .galeria-estandar__encabezado,
    .galeria-estandar__item {
        opacity: 1;
        animation: none;
    }

    .galeria-estandar__item img,
    .galeria-estandar__item::after,
    .galeria-estandar__contenido {
        transition: none;
    }
}