/* Portfolio Specific Styles */

/* Filter Section */
.portfolio-filter-section {
    padding: 2rem 0;
    background: var(--light-gray);
    position: sticky;
    top: 70px;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    background: var(--light);
    border: 2px solid var(--medium-gray);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-weight: 500;
    color: var(--dark);
    cursor: pointer;
    transition: var(--transition);
}

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

.filter-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--light);
}

/* Portfolio Grid Section */
.portfolio-grid-section {
    padding: var(--space-xl) 0;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--space-lg);
}

.portfolio-item {
    background: var(--light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.3s ease, transform 0.3s ease, display 0.3s ease;
}

.portfolio-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.portfolio-image {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    height: auto;
    overflow: hidden;
    background: var(--light-gray);
}

.portfolio-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    transition: none;
}

.portfolio-item:hover .portfolio-image img {
    transform: none;
}


.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.view-case-study {
    background: var(--secondary);
    color: var(--light);
    border: none;
    padding: 0.875rem 1.5rem;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.view-case-study:hover {
    background: var(--secondary-light);
    transform: translateY(-2px);
}

.view-case-study i {
    transition: transform 0.3s ease;
}

.view-case-study:hover i {
    transform: translateX(5px);
}

.portfolio-info {
    padding: var(--space-md);
}

.portfolio-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.portfolio-category {
    background: var(--light-gray);
    color: var(--secondary);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
}

.portfolio-year {
    color: var(--dark-gray);
    font-size: 0.875rem;
}

.portfolio-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

.portfolio-info p {
    color: var(--dark-gray);
    margin-bottom: var(--space-sm);
    line-height: 1.6;
}

.portfolio-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.portfolio-tags span {
    background: var(--light-gray);
    color: var(--dark);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* Lightbox Styles */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

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

.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
}

.lightbox-img {
    max-width: 100%;
    max-height: 70vh;
    object-fit: contain;
    border-radius: var(--radius-md);
}

.lightbox-caption {
    color: white;
    text-align: center;
    margin-top: 1rem;
    padding: 0 1rem;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.5rem;
    transition: var(--transition);
}

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

.lightbox-close {
    top: -60px;
    right: 0;
}

.lightbox-prev {
    left: -60px;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-next {
    right: -60px;
    top: 50%;
    transform: translateY(-50%);
}

/* Responsive Portfolio */
@media (max-width: 992px) {
    .portfolio-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    .portfolio-filter-section {
        position: static;
        top: auto;
    }
    
    .filter-buttons {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 0.5rem;
        -webkit-overflow-scrolling: touch;
    }
    
    .filter-btn {
        white-space: nowrap;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .lightbox-prev,
    .lightbox-next {
        left: 10px;
        right: auto;
        top: auto;
        bottom: -60px;
        transform: none;
    }
    
    .lightbox-next {
        left: 70px;
    }
    
    .lightbox-close {
        top: -60px;
        right: 10px;
    }
}