/* General Styles */

.portfolio-section {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

h1 {
    font-size: 2.5rem;
    font-weight: 300;
    margin: 0 0 60px 0;
    letter-spacing: 1px;
}

/* Navigation Styles */
.main-nav {
    display: flex;
    gap: 50px;
    flex-wrap: wrap;
    padding: 0 0 20px 0;
    border-bottom: 1px solid #eee;
    justify-content: center;
}

.sub-nav {
    margin: 0 0 60px 0;
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
    padding: 0;
    justify-content: center;
}

/* Hide sub-nav by default */
.sub-nav {
    display: none;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

/* Show sub-nav when active */
.sub-nav.show {
    display: flex;
    opacity: 1;
    transform: translateY(0);
}

.nav-button {
    background: none;
    border: none;
    padding: 5px 0;
    cursor: pointer;
    font-size: 0.95rem;
    color: #999;
    transition: color 0.3s ease;
    letter-spacing: 0.5px;
}

.nav-button:hover {
    color: #000;
}

.nav-button.active {
    color: #000;
}

/* Portfolio Grid */
.portfolio-grid {
    margin: 0 auto;
}

.grid-item {
    position: relative;
    background: #f5f5f5;
    overflow: hidden;
    cursor: pointer;
    width: 31.33%;
    margin: 1%;
    aspect-ratio: 1/1;
}

.grid-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

.grid-item.filtered-out {
    opacity: 0.2;
    transform: scale(0.95);
}

/* Image Overlay Styles */
.item-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 40px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.item-title {
    font-size: 1.8rem;
    margin: 0 0 15px 0;
    font-weight: 300;
    color: #000;
    letter-spacing: 1px;
}

.item-category {
    font-size: 0.95rem;
    color: #999;
    font-weight: 300;
    letter-spacing: 0.5px;
}

.item-category span {
    margin: 0 8px;
    color: #ccc;
}

/* Responsive Grid */
@media (max-width: 1200px) {
    .grid-item {
        width: 48%;
        margin: 1%;
    }
    
   

    .portfolio-section {
        padding: 0 30px;
    }
}

@media (max-width: 768px) {
    .grid-item {
        width: 98%;
        margin: 1%;
    }
    
 
    
    .portfolio-section {
        padding: 0 20px;
    }
    
    .main-nav {
        gap: 30px;
        margin-bottom: 30px;
    }
    
    .sub-nav {
        gap: 25px;
        margin-bottom: 40px;
    }
    
    h1 {
        margin-bottom: 40px;
        font-size: 2rem;
    }
    
    .item-overlay {
        padding: 30px;
    }
    
    .item-title {
        font-size: 1.5rem;
    }
}