`public/css/gallery.css`

385 lines
/**
 * Responsive Image Gallery Component Styles
 * Features: Grid layout, lazy loading states, lightbox modal, responsive design
 */

/* ==================== Gallery Container ==================== */
.image-gallery {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

/* Column variations */
.gallery-grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
}

.gallery-grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.gallery-grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ==================== Gallery Items ==================== */
.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    background: #f5f5f5;
    cursor: pointer;
    aspect-ratio: 4 / 3;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.gallery-item:focus {
    outline: 3px solid var(--primary-color, #2c5f8d);
    outline-offset: 2px;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity 0.3s ease, transform 0.3s ease;
    opacity: 0;
}

.gallery-item img.loaded {
    opacity: 1;
}

.gallery-item:hover img {
    transform: scale(1.05);
}

/* ==================== Loading States ==================== */
.gallery-item.loading::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color, #2c5f8d);
    border-radius: 50%;
    animation: gallery-spinner 1s linear infinite;
}

@keyframes gallery-spinner {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.gallery-item.error::after {
    content: '⚠️ Failed to load';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #e74c3c;
    font-size: 14px;
    text-align: center;
}

/* ==================== Gallery Overlay ==================== */
.gallery-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.6) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.gallery-item:hover::after {
    opacity: 1;
}

/* ==================== Gallery Caption ==================== */
.gallery-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1rem;
    color: white;
    font-size: 0.9rem;
    font-weight: 500;
    transform: translateY(100%);
    transition: transform 0.3s ease;
    z-index: 2;
}

.gallery-item:hover .gallery-caption {
    transform: translateY(0);
}

/* ==================== Lightbox Modal ==================== */
.gallery-lightbox {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

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

/* ==================== Lightbox Controls ==================== */
.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 10001;
    backdrop-filter: blur(10px);
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: scale(1.1);
}

.lightbox-close {
    top: 20px;
    right: 20px;
}

.lightbox-prev {
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-prev:hover {
    transform: translateY(-50%) scale(1.1);
}

.lightbox-next {
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-next:hover {
    transform: translateY(-50%) scale(1.1);
}

.lightbox-close i,
.lightbox-prev i,
.lightbox-next i {
    font-size: 1.5rem;
}

/* ==================== Lightbox Content ==================== */
.lightbox-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: lightbox-zoom-in 0.3s ease;
}

@keyframes lightbox-zoom-in {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.lightbox-image {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.lightbox-caption {
    margin-top: 1.5rem;
    color: white;
    font-size: 1.1rem;
    text-align: center;
    max-width: 600px;
    line-height: 1.6;
}

.lightbox-counter {
    position: absolute;
    top: -40px;
    right: 0;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    font-weight: 500;
}

/* ==================== Responsive Design ==================== */

/* Tablet (768px and below) */
@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1rem;
    }

    .lightbox-close {
        top: 10px;
        right: 10px;
        width: 40px;
        height: 40px;
    }

    .lightbox-prev,
    .lightbox-next {
        width: 40px;
        height: 40px;
    }

    .lightbox-prev {
        left: 10px;
    }

    .lightbox-next {
        right: 10px;
    }

    .lightbox-close i,
    .lightbox-prev i,
    .lightbox-next i {
        font-size: 1.2rem;
    }

    .lightbox-caption {
        font-size: 1rem;
        padding: 0 1rem;
    }
}

/* Mobile (480px and below) */
@media (max-width: 480px) {
    .image-gallery {
        padding: 1rem 0.5rem;
    }

    .gallery-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .gallery-item {
        aspect-ratio: 16 / 9;
    }

    .lightbox-content {
        max-width: 95vw;
        max-height: 85vh;
    }

    .lightbox-image {
        max-height: 70vh;
    }

    .lightbox-caption {
        font-size: 0.9rem;
        margin-top: 1rem;
    }

    .lightbox-counter {
        font-size: 0.8rem;
        top: -30px;
    }
}

/* ==================== Accessibility ==================== */
.gallery-item:focus-visible {
    outline: 3px solid var(--primary-color, #2c5f8d);
    outline-offset: 3px;
}

.lightbox-close:focus-visible,
.lightbox-prev:focus-visible,
.lightbox-next:focus-visible {
    outline: 3px solid white;
    outline-offset: 2px;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .gallery-item,
    .gallery-item img,
    .gallery-lightbox,
    .lightbox-content,
    .gallery-caption {
        transition: none;
        animation: none;
    }
}

/* ==================== Print Styles ==================== */
@media print {
    .gallery-lightbox,
    .lightbox-close,
    .lightbox-prev,
    .lightbox-next {
        display: none;
    }

    .gallery-item {
        break-inside: avoid;
        page-break-inside: avoid;
    }
}