/*
 * lightbox.css
 * Galerie grid asymétrique, modale grille fullscreen, lightbox zoom avec thumbnails
 */

/* ==========================================================================
   GALERIE GRID (dans la page)
   ========================================================================== */

.activity-gallery__grid {
    display: grid;
    gap: 4px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    height: 420px;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    grid-template-areas:
        "a a b c"
        "a a d e";
}

.activity-gallery__grid[data-gallery-count="4"] {
    grid-template-areas:
        "a a b c"
        "a a b d";
}

.activity-gallery__grid[data-gallery-count="3"] {
    grid-template-columns: 2fr 1fr 1fr;
    grid-template-rows: 1fr;
    grid-template-areas: "a b c";
    height: 320px;
}

.activity-gallery__grid[data-gallery-count="2"] {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr;
    grid-template-areas: "a b";
    height: 320px;
}

.activity-gallery__grid[data-gallery-count="1"] {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
    grid-template-areas: "a";
    height: 320px;
}

/* Zones de grille */
.activity-gallery__item { position: relative; overflow: hidden; cursor: pointer; }
.activity-gallery__item:nth-child(1) { grid-area: a; }
.activity-gallery__item:nth-child(2) { grid-area: b; }
.activity-gallery__item:nth-child(3) { grid-area: c; }
.activity-gallery__item:nth-child(4) { grid-area: d; }
.activity-gallery__item:nth-child(5) { grid-area: e; }

/* Masquer au-delà du visible */
.activity-gallery__item:nth-child(n+6) { display: none; }

.activity-gallery__grid[data-gallery-count="4"] .activity-gallery__item:nth-child(5),
.activity-gallery__grid[data-gallery-count="3"] .activity-gallery__item:nth-child(n+4),
.activity-gallery__grid[data-gallery-count="2"] .activity-gallery__item:nth-child(n+3),
.activity-gallery__grid[data-gallery-count="1"] .activity-gallery__item:nth-child(n+2) {
    display: none;
}

.activity-gallery__item img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 600ms cubic-bezier(0, 0, 0.5, 1);
}

.activity-gallery__item:hover img {
    transform: scale(1.05);
}

/* --- Bouton "Voir les N photos" sur le dernier item visible (style Airbnb) --- */

.activity-gallery__view-all {
    position: absolute;
    bottom: var(--space-3);
    right: var(--space-3);
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--white);
    border: 1px solid var(--gray-800);
    border-radius: var(--radius-md);
    color: var(--gray-800);
    font-family: inherit;
    font-size: 0.8125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.activity-gallery__view-all:hover {
    background: var(--gray-100);
}

.activity-gallery__view-all svg {
    flex-shrink: 0;
}

/* ==========================================================================
   MODALE GRILLE FULLSCREEN
   ========================================================================== */

.gallery-modal {
    position: fixed;
    inset: 0;
    z-index: 999;
    background: var(--white);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.gallery-modal.active {
    opacity: 1;
    visibility: visible;
}

.gallery-modal__header {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-6);
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
}

.gallery-modal__title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0;
}

.gallery-modal__close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--gray-100);
    border: none;
    border-radius: var(--radius-full);
    color: var(--gray-700);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.gallery-modal__close:hover {
    background: var(--gray-200);
    color: var(--gray-900);
}

.gallery-modal__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
    padding: var(--space-6);
    max-width: 1200px;
    margin: 0 auto;
}

.gallery-modal__item {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    cursor: pointer;
    aspect-ratio: 4 / 3;
}

.gallery-modal__item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
}

.gallery-modal__item:hover img {
    transform: scale(1.03);
}

.gallery-modal__caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-2) var(--space-3);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.6), transparent);
    color: var(--white);
    font-size: 0.8125rem;
    line-height: 1.4;
}

/* ==========================================================================
   LIGHTBOX ZOOM
   ========================================================================== */

.lightbox {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.92);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox__inner {
    display: flex;
    width: 90vw;
    max-width: 1200px;
    height: 85vh;
    background: #1a1a1a;
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
}

/* --- Thumbnails (colonne gauche) --- */

.lightbox__thumbs {
    width: 120px;
    flex-shrink: 0;
    overflow-y: auto;
    padding: var(--space-2);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    background: #111;
}

.lightbox__thumb {
    width: 100%;
    aspect-ratio: 4 / 3;
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    opacity: 0.5;
    transition: opacity var(--transition-fast);
    flex-shrink: 0;
    border: 2px solid transparent;
}

.lightbox__thumb.active {
    opacity: 1;
    border-color: var(--ocean-primary);
}

.lightbox__thumb:hover:not(.active) {
    opacity: 0.8;
}

.lightbox__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* --- Zone image principale --- */

.lightbox__main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.lightbox__image-wrapper {
    position: relative;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    min-height: 0;
}

.lightbox__img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: var(--radius-sm);
    user-select: none;
}

.lightbox__caption {
    padding: var(--space-3) var(--space-5);
    color: var(--gray-300);
    font-size: 0.875rem;
    text-align: center;
    min-height: 2.5rem;
}

.lightbox__caption:empty {
    display: none;
}

/* --- Bouton fermer --- */

.lightbox__close {
    position: absolute;
    top: var(--space-3);
    right: var(--space-3);
    z-index: 10;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: var(--radius-full);
    color: var(--white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast);
}

.lightbox__close:hover {
    background: rgba(255, 255, 255, 0.25);
}

/* --- Navigation flèches --- */

.lightbox__nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    border-radius: 0;
    color: var(--white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity var(--transition-fast);
    z-index: 5;
    filter: drop-shadow(0 1px 3px rgba(0, 0, 0, 0.6));
}

.lightbox__nav:hover {
    opacity: 0.7;
}

.lightbox__nav--prev { left: var(--space-3); }
.lightbox__nav--next { right: var(--space-3); }

/* ==========================================================================
   RESPONSIVE — Tablette
   ========================================================================== */

@media (max-width: 1024px) {
    /* 3 photos visibles : 1 grande gauche + 2 petites empilées droite */
    .activity-gallery__grid,
    .activity-gallery__grid[data-gallery-count="5"],
    .activity-gallery__grid[data-gallery-count="4"] {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: 1fr 1fr;
        grid-template-areas:
            "a b"
            "a c";
        height: 320px;
    }

    .activity-gallery__grid .activity-gallery__item:nth-child(n+4) {
        display: none;
    }

    .activity-gallery__grid[data-gallery-count="3"] {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: 1fr 1fr;
        grid-template-areas:
            "a b"
            "a c";
        height: 320px;
    }

    .activity-gallery__grid[data-gallery-count="2"] {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: 1fr;
        grid-template-areas: "a b";
        height: 220px;
    }

    .activity-gallery__grid[data-gallery-count="1"] {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr;
        grid-template-areas: "a";
        height: 220px;
    }

    .gallery-modal__grid {
        grid-template-columns: repeat(2, 1fr);
        padding: var(--space-4);
        gap: var(--space-2);
    }
}

/* ==========================================================================
   RESPONSIVE — Mobile
   ========================================================================== */

@media (max-width: 768px) {
    .activity-gallery__grid,
    .activity-gallery__grid[data-gallery-count="5"],
    .activity-gallery__grid[data-gallery-count="4"],
    .activity-gallery__grid[data-gallery-count="3"] {
        height: 240px;
    }

    .activity-gallery__grid[data-gallery-count="2"],
    .activity-gallery__grid[data-gallery-count="1"] {
        height: 180px;
    }

    .activity-gallery__view-all {
        font-size: 0.75rem;
        padding: var(--space-1) var(--space-3);
    }

    .gallery-modal__header {
        padding: var(--space-3) var(--space-4);
    }

    .gallery-modal__title {
        font-size: 1.0625rem;
    }

    .gallery-modal__grid {
        grid-template-columns: repeat(2, 1fr);
        padding: var(--space-3);
        gap: var(--space-2);
    }

    .lightbox__inner {
        flex-direction: column;
        width: 100vw;
        max-width: 100vw;
        border-radius: 0;
        height: 100vh;
        height: 100dvh;
        padding-bottom: env(safe-area-inset-bottom, 0);
    }

    .lightbox__main {
        order: 1;
        flex: 1;
        min-height: 0;
    }

    .lightbox__image-wrapper {
        padding: var(--space-2);
    }

    /* Flèches superposées sur l'image, fond plus visible */
    .lightbox__nav {
        width: 32px;
        height: 32px;
    }

    .lightbox__nav--prev { left: var(--space-2); }
    .lightbox__nav--next { right: var(--space-2); }

    /* Croix en haut à gauche, bien visible */
    .lightbox__close {
        top: var(--space-2);
        right: var(--space-2);
        width: 36px;
        height: 36px;
        background: rgba(0, 0, 0, 0.5);
    }

    .lightbox__caption {
        padding: var(--space-2) var(--space-3);
        font-size: 0.8125rem;
        min-height: auto;
        flex-shrink: 0;
    }

    /* Thumbnails en bas */
    .lightbox__thumbs {
        width: 100%;
        flex-shrink: 0;
        flex-direction: row;
        overflow-x: auto;
        overflow-y: hidden;
        order: 2;
        padding: var(--space-2);
        gap: var(--space-2);
    }

    .lightbox__thumb {
        width: 56px;
        height: 42px;
        aspect-ratio: auto;
        flex-shrink: 0;
    }

    /* Thumbnail : image entière visible, pas coupée */
    .lightbox__thumb img {
        object-fit: contain;
        background: #000;
    }
}