/* ==========================================
   Gallery & Lightbox Styles - I.E.S. Santa Mónica
   ========================================== */

/* 1. Gallery Grid Layout */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.gallery-card {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    background-color: var(--color-primary-dark);
}

.gallery-card-large {
    grid-column: span 3;
    height: 380px;
}

.gallery-card-normal {
    grid-column: span 2;
    height: 290px;
}

.gallery-card-media {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.gallery-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 300ms ease;
}

/* Hover Effect: Scale Image + Show Dark Navy Overlay */
.gallery-card:hover .gallery-card-media img,
.gallery-card:focus .gallery-card-media img {
    transform: scale(1.05);
}

.gallery-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(8, 46, 89, 0.85);
    display: flex;
    align-items: flex-end;
    padding: 2rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 300ms ease, visibility 300ms ease;
    z-index: 2;
}

.gallery-card:hover .gallery-card-overlay,
.gallery-card:focus .gallery-card-overlay {
    opacity: 1;
    visibility: visible;
}

.gallery-overlay-content {
    width: 100%;
}

.gallery-album-title {
    font-family: var(--font-heading);
    font-size: clamp(1.4rem, 2.2vw, 1.85rem);
    color: var(--color-accent);
    margin-bottom: 0.35rem;
    font-weight: 700;
    line-height: 1.25;
}

.gallery-album-date {
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--color-white);
    opacity: 0.9;
}

.gallery-zoom-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2.25rem;
    color: var(--color-accent);
    opacity: 0.9;
}

/* Mobile Caption Bar Fallback */
.gallery-card-mobile-caption {
    display: none;
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(8, 46, 89, 0.9);
    padding: 0.65rem 1rem;
    color: var(--color-white);
    z-index: 3;
}

.gallery-card-mobile-caption .mobile-title {
    display: block;
    font-family: var(--font-heading);
    font-size: 1rem;
    color: var(--color-accent);
    font-weight: 700;
}

.gallery-card-mobile-caption .mobile-date {
    font-size: 0.8rem;
    opacity: 0.85;
}

/* 2. Lightbox Modal Component */
.lightbox-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 300ms ease, visibility 300ms ease;
}

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

.lightbox-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(5, 29, 56, 0.94);
    backdrop-filter: blur(4px);
}

.lightbox-content {
    position: relative;
    z-index: 10;
    width: 90%;
    max-width: 1040px;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--color-white);
}

.lightbox-close {
    position: absolute;
    top: -3.5rem;
    right: 0;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.15);
    color: var(--color-white);
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    cursor: pointer;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.lightbox-close:hover {
    background-color: var(--color-accent);
    color: var(--color-primary);
    transform: scale(1.1);
}

.lightbox-header {
    text-align: center;
    margin-bottom: 1rem;
}

.lightbox-album-title {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    color: var(--color-accent);
    margin-bottom: 0.25rem;
}

.lightbox-counter {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.75);
}

.lightbox-stage {
    position: relative;
    width: 100%;
    height: 60vh;
    max-height: 540px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-img-wrapper {
    max-width: 100%;
    max-height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
}

.lightbox-img {
    max-width: 100%;
    max-height: 60vh;
    object-fit: contain;
    border-radius: var(--radius-sm);
    transition: opacity 250ms ease, transform 250ms ease;
}

.lightbox-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background-color: rgba(8, 46, 89, 0.85);
    color: var(--color-white);
    font-size: 1.35rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    z-index: 20;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.lightbox-nav-btn.prev { left: -1.5rem; }
.lightbox-nav-btn.next { right: -1.5rem; }

.lightbox-nav-btn:hover {
    background-color: var(--color-accent);
    color: var(--color-primary);
    transform: translateY(-50%) scale(1.1);
}

.lightbox-footer {
    margin-top: 1.25rem;
    text-align: center;
    max-width: 720px;
}

.lightbox-caption {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.5;
}

/* Responsive Grid Adjustments */
@media (max-width: 992px) {
    .gallery-grid {
        grid-template-columns: 1fr 1fr;
    }

    .gallery-card-large,
    .gallery-card-normal {
        grid-column: span 1;
        height: 300px;
    }
}

@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: 1fr;
    }

    .gallery-card-large,
    .gallery-card-normal {
        grid-column: span 1;
        height: 250px;
    }

    .gallery-card-overlay {
        display: none;
    }

    .gallery-card-mobile-caption {
        display: block;
    }

    .lightbox-nav-btn.prev { left: 0.5rem; }
    .lightbox-nav-btn.next { right: 0.5rem; }
}