/* ==========================================================================
   IMAGE LIST - Galería de imágenes con diseño elegante y fino
   ========================================================================== */

/* ----------------------------------------------------------------------------
   Variables CSS para la galería
   ---------------------------------------------------------------------------- */

:root {
    /* Colores del proyecto */
    --image-list-overlay-bg: rgba(0, 0, 0, 0.4);
    --image-list-icon-color: #ffffff;

    /* Espaciado y gaps */
    --image-list-gap-desktop-grande: 30px;
    --image-list-gap-desktop: 25px;
    --image-list-gap-tablet: 20px;
    --image-list-gap-mobile: 15px;

    /* Ratio de imágenes: 615:557 */
    --image-list-aspect-ratio: 615 / 557;

    /* Hover effects */
    --image-list-hover-scale: 1.03;
    --image-list-transition: 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ----------------------------------------------------------------------------
   Contenedor Principal de la Sección
   ---------------------------------------------------------------------------- */

#imageListSec {
    padding-bottom: 64px;
    background-color: #faf8f5;
}

/* ----------------------------------------------------------------------------
   Grid Layout - Base Mobile First (<768px)
   ---------------------------------------------------------------------------- */

.image-list-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--image-list-gap-mobile);
    width: 100%;
}

/* ----------------------------------------------------------------------------
   Item Individual de la Galería
   ---------------------------------------------------------------------------- */

.image-list-item {
    position: relative;
    width: 100%;
    aspect-ratio: var(--image-list-aspect-ratio);
    overflow: hidden;
    background-color: #f5f5f5;
    cursor: pointer;
}

/* Enlace del item - ocupa 100% del contenedor */
.image-list-item-link {
    display: block;
    width: 100%;
    height: 100%;
    position: relative;
    text-decoration: none;
}

/* Picture y IMG - llenan el contenedor */
.image-list-item picture,
.image-list-item img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform var(--image-list-transition);
}

/* ----------------------------------------------------------------------------
   Overlay con Icono Zoom - Efecto Hover Elegante
   ---------------------------------------------------------------------------- */

.image-list-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--image-list-overlay-bg);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--image-list-transition),
                visibility var(--image-list-transition);

    /* Centrado del icono con flexbox */
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.image-list-zoom-icon {
    width: 24px;
    height: 24px;
    transition: transform 0.3s ease-out;
    pointer-events: none;
}

/* Imagen SVG dentro del icono - pintada de blanco */
.image-list-zoom-icon img {
    width: 100%;
    height: 100%;
    display: block;
    filter: brightness(0) invert(1); /* Convierte SVG negro a blanco */
}

/* ----------------------------------------------------------------------------
   Estados Hover - Sutil y Elegante
   ---------------------------------------------------------------------------- */

/* Hover del item completo */
.image-list-item:hover .image-list-overlay {
    opacity: 1;
    visibility: visible;
}

.image-list-item:hover img {
    transform: scale(var(--image-list-hover-scale));
}

.image-list-item:hover .image-list-zoom-icon {
    transform: scale(1.1);
}

/* Focus para accesibilidad */
.image-list-item-link:focus {
    outline: 2px solid #606060;
    outline-offset: 2px;
}

.image-list-item-link:focus .image-list-overlay {
    opacity: 1;
    visibility: visible;
}

/* ----------------------------------------------------------------------------
   Responsive - Tablet (768px - 991px)
   ---------------------------------------------------------------------------- */

@media (min-width: 768px) and (max-width: 991px) {
    .image-list-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--image-list-gap-tablet);
    }

    .image-list-zoom-icon {
        width: 28px;
        height: 28px;
    }
}

/* ----------------------------------------------------------------------------
   Responsive - Desktop Pequeño (992px - 1920px)
   ---------------------------------------------------------------------------- */

@media (min-width: 992px) and (max-width: 1920px) {
    #imageListSec {
        padding-bottom: 80px;
    }

    .image-list-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--image-list-gap-desktop);
    }

    .image-list-zoom-icon {
        width: 32px;
        height: 32px;
    }

}

/* ----------------------------------------------------------------------------
   Responsive - Desktop Grande (>1920px)
   ---------------------------------------------------------------------------- */

@media (min-width: 1921px) {
    #imageListSec {
        padding-bottom: 96px;
    }

    .image-list-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--image-list-gap-desktop-grande);
    }

    .image-list-zoom-icon {
        width: 36px;
        height: 36px;
    }
}

/* ----------------------------------------------------------------------------
   Optimizaciones de Performance
   ---------------------------------------------------------------------------- */

/* Mejora performance de animaciones */
.image-list-item img,
.image-list-overlay {
    will-change: transform, opacity;
}

/* Prevenir flickering en Safari */
.image-list-item {
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

/* ----------------------------------------------------------------------------
   Loading State - Mientras cargan las imágenes
   ---------------------------------------------------------------------------- */

.image-list-item picture {
    background: linear-gradient(
        90deg,
        #f5f5f5 0%,
        #ebebeb 20%,
        #f5f5f5 40%,
        #f5f5f5 100%
    );
    background-size: 200% 100%;
    animation: imageListShimmer 1.5s ease-in-out infinite;
}

.image-list-item picture img[src] {
    background: none;
    animation: none;
}

@keyframes imageListShimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

/* ----------------------------------------------------------------------------
   Dark Theme Support (opcional)
   ---------------------------------------------------------------------------- */

@media (prefers-color-scheme: dark) {
    :root {
        --image-list-overlay-bg: rgba(0, 0, 0, 0.6);
    }

    #imageListSec {
        background-color: #1a1a1a;
    }

    .image-list-item {
        background-color: #2a2a2a;
    }
}

/* ----------------------------------------------------------------------------
   Print Styles
   ---------------------------------------------------------------------------- */

@media print {
    #imageListSec {
        padding: 0 0 20px 0;
    }

    .image-list-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .image-list-overlay,
    .image-list-zoom-icon {
        display: none;
    }

    .image-list-item {
        page-break-inside: avoid;
    }
}