/* =========================================
   Photo Gallery Styles
   ========================================= */

/* Tab Navigation */
.photo-tabs {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: var(--spacing-sm) var(--spacing-md);
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary);
    font-size: 1.125rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: -2px;
}

.tab-btn:hover {
    color: var(--primary-color);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-btn svg {
    flex-shrink: 0;
}

/* Album Browser */
.album-browser {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.album-card {
    background-color: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 2px 10px var(--shadow);
    cursor: pointer;
    transition: var(--transition);
}

.album-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-hover);
}

.album-cover {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    position: relative;
}

.album-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.album-card:hover .album-cover img {
    transform: scale(1.05);
}

.album-photo-count {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.album-info {
    padding: var(--spacing-md);
}

.album-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.album-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Gallery View */
.gallery-view {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--bg-tertiary);
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: var(--spacing-md);
}

.back-btn:hover {
    background-color: var(--primary-color);
    color: white;
}

.gallery-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.gallery-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* Masonry Photo Grid */
.photo-grid {
    column-count: 3;
    column-gap: var(--spacing-sm);
}

.photo-item {
    break-inside: avoid;
    margin-bottom: var(--spacing-sm);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-md);
}

.photo-item img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s ease;
    border-radius: var(--radius-md);
}

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

.photo-caption-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: white;
    padding: 1rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.photo-item:hover .photo-caption-overlay {
    opacity: 1;
}

.photo-caption-text {
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

.photo-caption-meta {
    font-size: 0.75rem;
    opacity: 0.9;
}

/* Responsive Masonry */
@media (max-width: 968px) {
    .photo-grid {
        column-count: 2;
    }
}

@media (max-width: 640px) {
    .photo-grid {
        column-count: 1;
    }
    
    .album-browser {
        grid-template-columns: 1fr;
    }
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.95);
    z-index: 10000;
    animation: fadeIn 0.3s ease;
}

.lightbox.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-content {
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: var(--radius-md);
}

.lightbox-info {
    color: white;
    text-align: center;
    margin-top: var(--spacing-md);
    max-width: 600px;
}

.lightbox-caption {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.lightbox-meta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    font-size: 0.9rem;
    opacity: 0.8;
}

.lightbox-meta span:not(:last-child)::after {
    content: "•";
    margin-left: var(--spacing-md);
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: white;
    cursor: pointer;
    padding: 1rem;
    border-radius: 50%;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

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

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

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

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

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

/* Loading State */
.loading-albums {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

.loading-albums::after {
    content: "Loading albums...";
    display: block;
    margin-top: var(--spacing-sm);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-muted);
}

.empty-state svg {
    width: 80px;
    height: 80px;
    margin-bottom: var(--spacing-md);
    opacity: 0.3;
}

/* Keyboard Navigation Hint */
.keyboard-hint {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.lightbox.active .keyboard-hint {
    opacity: 1;
}

/* Mobile Optimizations */
@media (max-width: 768px) {
    .lightbox-prev,
    .lightbox-next {
        padding: 0.75rem;
    }
    
    .lightbox-prev svg,
    .lightbox-next svg {
        width: 30px;
        height: 30px;
    }
    
    .lightbox-close {
        top: 10px;
        right: 10px;
        padding: 0.75rem;
    }
    
    .lightbox-content img {
        max-height: 70vh;
    }
    
    .photo-tabs {
        flex-direction: column;
        border-bottom: none;
    }
    
    .tab-btn {
        border-bottom: none;
        border-left: 3px solid transparent;
        margin-bottom: 0;
        margin-left: -2px;
    }
    
    .tab-btn.active {
        border-left-color: var(--primary-color);
    }
}