/* Portfolio Gallery Styles */
/* Enhanced filtering and gallery display system */

.portfolio-preview {
    padding: var(--section-padding);
    background: linear-gradient(135deg, var(--dark-gray) 0%, var(--primary-black) 100%);
}

.portfolio-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 3rem;
}

.filter-btn {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: var(--text-gray);
    padding: 12px 24px;
    border-radius: 30px;
    cursor: pointer;
    font-family: var(--font-body);
    font-weight: 500;
    letter-spacing: 0.5px;
    transition: var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.filter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.2), transparent);
    transition: var(--transition-medium);
}

.filter-btn:hover::before {
    left: 100%;
}

.filter-btn:hover {
    border-color: var(--gold-primary);
    color: var(--gold-primary);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--gold-primary), var(--gold-dark));
    border-color: var(--gold-primary);
    color: var(--primary-black);
    font-weight: 600;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.portfolio-item {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition-medium), opacity 0.4s ease, transform 0.4s ease;
    background: var(--dark-gray);
    aspect-ratio: 4/5;
    opacity: 1;
    transform: scale(1);
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.portfolio-item.portfolio-visible {
    opacity: 1;
    transform: scale(1);
}

.portfolio-item:not(.portfolio-visible) {
    opacity: 0;
    transform: scale(0.8);
    pointer-events: none;
}

.portfolio-item:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: var(--shadow-strong);
}

.portfolio-item:hover img {
    transform: scale(1.1);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(0, 0, 0, 0.8) 0%,
        rgba(212, 175, 55, 0.3) 50%,
        rgba(0, 0, 0, 0.9) 100%
    );
    display: flex;
    align-items: flex-end;
    padding: 2rem;
    opacity: 0;
    transition: var(--transition-medium);
}

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

.portfolio-info {
    width: 100%;
}

.portfolio-info h4 {
    color: var(--white);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.portfolio-info p {
    color: var(--gold-primary);
    font-size: 1rem;
    font-weight: 500;
}

.portfolio-cta {
    text-align: center;
    margin-top: 3rem;
}

/* Portfolio Filter Animation */
.portfolio-item {
    animation: fadeIn 0.6s ease-in-out;
}

.portfolio-item.filtering-out {
    animation: fadeOut 0.3s ease-in-out forwards;
}

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

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
    to {
        opacity: 0;
        transform: translateY(-20px) scale(0.9);
    }
}

/* Lightbox Styles */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(10px);
}

.lightbox.active {
    display: flex;
}

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

.lightbox-image {
    max-width: 100%;
    max-height: 100%;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-strong);
}

.lightbox-close {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: none;
    color: var(--white);
    font-size: 2rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

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

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.7);
    border: none;
    color: var(--white);
    font-size: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-nav:hover {
    background: var(--gold-primary);
    color: var(--primary-black);
}

.lightbox-prev {
    left: -60px;
}

.lightbox-next {
    right: -60px;
}

.lightbox-info {
    position: absolute;
    bottom: -60px;
    left: 0;
    right: 0;
    text-align: center;
    color: var(--white);
}

.lightbox-info h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--gold-primary);
}

.lightbox-info p {
    color: var(--text-gray);
    font-size: 0.9rem;
}

/* Loading Animation for Portfolio Items */
.portfolio-item.loading {
    background: linear-gradient(
        90deg,
        var(--dark-gray) 25%,
        var(--medium-gray) 50%,
        var(--dark-gray) 75%
    );
    background-size: 400% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% {
        background-position: 400% 0%;
    }
    100% {
        background-position: -400% 0%;
    }
}

/* Portfolio Categories */
.portfolio-categories {
    display: none; /* Hidden data for JavaScript filtering */
}

/* Responsive Portfolio Design */
@media (max-width: 768px) {
    .portfolio-filters {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }
    
    .filter-btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .portfolio-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1.5rem;
    }
    
    .portfolio-item {
        aspect-ratio: 3/4;
    }
    
    .portfolio-overlay {
        padding: 1.5rem;
    }
    
    .portfolio-info h4 {
        font-size: 1.1rem;
    }
    
    .portfolio-info p {
        font-size: 0.9rem;
    }
    
    .lightbox-content {
        max-width: 95vw;
        max-height: 95vh;
    }
    
    .lightbox-nav {
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }
    
    .lightbox-prev {
        left: -50px;
    }
    
    .lightbox-next {
        right: -50px;
    }
    
    .lightbox-info {
        bottom: -80px;
    }
}

@media (max-width: 480px) {
    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .lightbox-nav {
        display: none; /* Hide navigation on very small screens */
    }
    
    .lightbox-info {
        position: static;
        margin-top: 1rem;
        padding: 0 1rem;
    }
}