/* Portfolio Specific Styles */
.portfolio-filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
}

.filter-btn {
    background-color: var(--light-bg);
    color: var(--primary-color);
    border: none;
    padding: 0.6rem 1.2rem;
    margin: 0 0.5rem 0.5rem 0;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    font-size: 0.9rem;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.filter-btn:hover, .filter-btn.active {
    background-color: var(--primary-color);
    color: var(--light-text);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.portfolio-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2.5rem;
    margin-top: 1rem;
}

.portfolio-item {
    background-color: #fff;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    transform: translateY(0);
    border: 1px solid #f0f0f0;
}

.portfolio-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.portfolio-description {
    padding: 1.8rem 1.8rem 1.2rem;
    border-bottom: 1px solid #f5f5f5;
}

.portfolio-description h4 {
    color: var(--primary-color);
    margin-bottom: 0.8rem;
    font-size: 1.3rem;
    position: relative;
    padding-left: 1rem;
}

.portfolio-description h4:before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.3rem;
    height: 1rem;
    width: 3px;
    background-color: var(--primary-color);
    border-radius: 3px;
}

.portfolio-description p {
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    color: #555;
    line-height: 1.5;
}

.portfolio-item img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

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

.portfolio-cta {
    text-align: center;
    margin-top: 4rem;
    padding: 2rem;
    background-color: var(--accent-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.portfolio-cta p {
    margin-bottom: 1.2rem;
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--primary-color);
}

/* Portfolio item reveal animation */
.portfolio-item {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.portfolio-item.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered animation delay for portfolio items */
.portfolio-item:nth-child(1) { transition-delay: 0.1s; }
.portfolio-item:nth-child(2) { transition-delay: 0.2s; }
.portfolio-item:nth-child(3) { transition-delay: 0.3s; }
.portfolio-item:nth-child(4) { transition-delay: 0.4s; }
.portfolio-item:nth-child(5) { transition-delay: 0.5s; }
.portfolio-item:nth-child(6) { transition-delay: 0.6s; }
.portfolio-item:nth-child(7) { transition-delay: 0.7s; }
.portfolio-item:nth-child(8) { transition-delay: 0.8s; }

/* Responsive adjustments */
@media screen and (max-width: 992px) {
    .portfolio-gallery {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 2rem;
    }
}

@media screen and (max-width: 768px) {
    .portfolio-gallery {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    
    .portfolio-description {
        padding: 1.5rem 1.5rem 1rem;
    }
    
    .portfolio-description h4 {
        font-size: 1.2rem;
    }
}

@media screen and (max-width: 480px) {
    .portfolio-gallery {
        grid-template-columns: 1fr;
    }
    
    .filter-btn {
        font-size: 0.8rem;
        padding: 0.5rem 1rem;
    }
}