/**
 * Casana Gallery - Estilos Premium v1.4
 * - Imagen principal: ancho 100%, alto automático
 * - Miniaturas: muestra solo las configuradas en "visible", resto en carrusel
 */

:root {
    --casana-primary: #1a1a1a;
    --casana-secondary: #f5f5f5;
    --casana-accent: #c9a962;
    --casana-border: rgba(0, 0, 0, 0.08);
    --casana-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    --casana-radius: 4px;
    --casana-transition: cubic-bezier(0.4, 0, 0.2, 1);
    --casana-gap: 8px;
}

.casana-gallery {
    --thumb-width: 100px;
    --visible-thumbs: 4;
    display: flex;
    gap: var(--casana-gap);
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    font-family: system-ui, -apple-system, sans-serif;
}

.casana-gallery[data-layout="horizontal"] {
    flex-direction: column;
}

.casana-gallery[data-layout="vertical"] {
    flex-direction: row;
    align-items: flex-start; /* Importante: no stretch */
}

.casana-main-image {
    position: relative;
    flex: 1;
    min-width: 0;
    overflow: hidden;
    border-radius: var(--casana-radius);
    background: var(--casana-secondary);
    box-shadow: var(--casana-shadow);
    line-height: 0;
}

.casana-main-image img {
    width: 100%;
    height: auto;
    display: block;
    opacity: 0;
    transition: opacity 0.4s var(--casana-transition);
}

.casana-main-image img.active {
    opacity: 1;
}

.casana-main-image img:not(.active) {
    position: absolute;
    top: 0;
    left: 0;
}

/* Loader */
.casana-main-image .casana-loader {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 2px solid var(--casana-border);
    border-top-color: var(--casana-accent);
    border-radius: 50%;
    animation: casana-spin 0.8s linear infinite;
    opacity: 0;
    z-index: 5;
}

.casana-main-image.loading .casana-loader {
    opacity: 1;
}

@keyframes casana-spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.casana-gallery[data-lightbox="true"] .casana-main-image {
    cursor: zoom-in;
}


.casana-thumbnails-wrapper {
    position: relative;
    flex-shrink: 0;
}

/* Layout horizontal */
.casana-gallery[data-layout="horizontal"] .casana-thumbnails-wrapper {
    width: 100%;
}

/* Layout vertical */
.casana-gallery[data-layout="vertical"] .casana-thumbnails-wrapper {
    width: var(--thumb-width);
}

/* Container con overflow hidden */
.casana-thumbnails-container {
    position: relative;
    overflow: hidden;
    border-radius: var(--casana-radius);
}

/* Horizontal */
.casana-gallery[data-layout="horizontal"] .casana-thumbnails-track {
    display: flex;
    flex-direction: row;
    gap: var(--casana-gap);
    transition: transform 0.4s var(--casana-transition);
}

/* Vertical - ALTURA CALCULADA según visible */
.casana-gallery[data-layout="vertical"] .casana-thumbnails-container {
    /* 
     * Altura = (número visible * altura de cada thumb) + (gaps entre ellos)
     * La altura de cada thumb se calcula para que N miniaturas llenen el espacio
     */
    height: calc(
        var(--visible-thumbs) * var(--thumb-height, 80px) + 
        (var(--visible-thumbs) - 1) * var(--casana-gap)
    );
}

.casana-gallery[data-layout="vertical"] .casana-thumbnails-track {
    display: flex;
    flex-direction: column;
    gap: var(--casana-gap);
    transition: transform 0.4s var(--casana-transition);
}
.casana-thumb {
    position: relative;
    border-radius: var(--casana-radius);
    overflow: hidden;
    cursor: pointer;
    background: var(--casana-secondary);
    transition: all 0.3s var(--casana-transition);
    flex-shrink: 0;
}

/* Horizontal: tamaño según visible */
.casana-gallery[data-layout="horizontal"] .casana-thumb {
    width: calc((100% - (var(--visible-thumbs) - 1) * var(--casana-gap)) / var(--visible-thumbs));
    aspect-ratio: 1;
}

/* Vertical: ancho 100%, altura según --thumb-height */
.casana-gallery[data-layout="vertical"] .casana-thumb {
    width: 100%;
    height: var(--thumb-height, 80px);
}

.casana-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s var(--casana-transition);
}

.casana-thumb:hover img {
    transform: scale(1.05);
}

.casana-thumb.active {
    border-color: var(--casana-accent);
    box-shadow: 0 0 0 2px rgba(201, 169, 98, 0.2);
}


.casana-nav {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid var(--casana-border);
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    transition: all 0.3s var(--casana-transition);
    z-index: 10;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.casana-nav:hover {
    background: #fff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.casana-nav.disabled {
    display: none !important;
}

.casana-nav svg {
    width: 14px;
    height: 14px;
    stroke: var(--casana-primary);
    stroke-width: 2;
    fill: none;
}

@media (hover: hover) {
    .casana-thumbnails-wrapper:hover .casana-nav:not(.disabled) {
        opacity: 1;
    }
}

/* Flechas horizontal */
.casana-gallery[data-layout="horizontal"] .casana-nav-prev {
    left: -14px;
    top: 50%;
    transform: translateY(-50%);
}

.casana-gallery[data-layout="horizontal"] .casana-nav-next {
    right: -14px;
    top: 50%;
    transform: translateY(-50%);
}

/* Flechas vertical */
.casana-gallery[data-layout="vertical"] .casana-nav-prev {
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
}

.casana-gallery[data-layout="vertical"] .casana-nav-prev svg {
    transform: rotate(90deg);
}

.casana-gallery[data-layout="vertical"] .casana-nav-next {
    bottom: -14px;
    top: auto;
    left: 50%;
    transform: translateX(-50%);
}

.casana-gallery[data-layout="vertical"] .casana-nav-next svg {
    transform: rotate(90deg);
}

.casana-lightbox {
    position: fixed;
    inset: 0;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0);
    backdrop-filter: blur(0px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s var(--casana-transition);
}

.casana-lightbox.active {
    opacity: 1;
    visibility: visible;
    background: rgba(0, 0, 0, 0.92);
    backdrop-filter: blur(8px);
}

.casana-lightbox-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    transform: scale(0.9);
    transition: transform 0.4s var(--casana-transition);
}

.casana-lightbox.active .casana-lightbox-content {
    transform: scale(1);
}

.casana-lightbox img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--casana-radius);
}

.casana-lightbox-close {
    position: absolute;
    top: -48px;
    right: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s;
}

.casana-lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
}

.casana-lightbox-close svg {
    width: 20px;
    height: 20px;
    stroke: #fff;
    stroke-width: 2;
}

.casana-lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s;
}

.casana-lightbox-nav:hover {
    background: rgba(255, 255, 255, 0.2);
}

.casana-lightbox-nav svg {
    width: 24px;
    height: 24px;
    stroke: #fff;
    stroke-width: 2;
    fill: none;
}

.casana-lightbox-prev { left: -72px; }
.casana-lightbox-next { right: -72px; }

.casana-lightbox-counter {
    position: absolute;
    bottom: -40px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
}

@media (max-width: 991px) {
    .casana-gallery {
        max-width: 100%;
        --thumb-width: 80px;
    }
}

@media (max-width: 767px) {
    .casana-gallery {
        --visible-thumbs: 4 !important;
    }
    
    .casana-gallery[data-layout="vertical"] {
        flex-direction: column;
    }
    
    .casana-gallery[data-layout="vertical"] .casana-thumbnails-wrapper {
        width: 100%;
    }
    
    .casana-gallery[data-layout="vertical"] .casana-thumbnails-container {
        height: auto;
    }
    
    .casana-gallery[data-layout="vertical"] .casana-thumbnails-track {
        flex-direction: row;
    }
    
    .casana-gallery[data-layout="vertical"] .casana-thumb {
        width: calc((100% - 3 * var(--casana-gap)) / 4);
        height: auto;
        aspect-ratio: 1;
    }
    
    .casana-nav {
        display: none !important;
    }
    
    .casana-lightbox-prev { left: 16px; }
    .casana-lightbox-next { right: 16px; }
    
    .casana-lightbox-nav {
        width: 40px;
        height: 40px;
        background: rgba(0, 0, 0, 0.5);
    }
    
    .casana-lightbox-close {
        top: 16px;
        right: 16px;
        background: rgba(0, 0, 0, 0.5);
    }
}

/* Swipe hint */
.casana-swipe-hint {
    display: none;
    text-align: center;
    font-size: 11px;
    color: rgba(0, 0, 0, 0.4);
    margin-top: 6px;
}

@media (max-width: 767px) {
    .casana-swipe-hint {
        display: block;
    }
}

/* Accesibilidad */
.casana-thumb:focus-visible,
.casana-nav:focus-visible {
    outline: 2px solid var(--casana-accent);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        transition: none !important;
        animation: none !important;
    }
}