/* Portfolio Section Styles */
.portfolio {
    padding: 40px 0;
    background: #f9f9f9;
    background: linear-gradient(135deg, #f9f9f9, #eef2f7);
}

/* Portfolio Filters */
.portfolio-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 40px;
}

.filter-btn {
    padding: 10px 20px;
    border: none;
    background: #fff;
    color: #333;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.filter-btn:hover,
.filter-btn.active {
    background: #007bff;
    color: #fff;
    transform: translateY(-2px);
}

/* Portfolio Grid */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.portfolio-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.portfolio-item:hover {
    transform: translateY(-10px);
}

.portfolio-content {
    position: relative;
    overflow: hidden;
}

.portfolio-content img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

/* Portfolio Overlay */
.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,123,255,0.9);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    padding: 20px;
    text-align: center;
}

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

.portfolio-overlay h3 {
    color: #fff;
    margin: 0 0 10px;
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.portfolio-overlay p {
    color: #fff;
    margin: 0;
    transform: translateY(20px);
    transition: transform 0.3s ease 0.1s;
}

.portfolio-item:hover .portfolio-overlay h3,
.portfolio-item:hover .portfolio-overlay p {
    transform: translateY(0);
}

.portfolio-link {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: #fff;
    border-radius: 50%;
    color: #007bff;
    line-height: 40px;
    text-align: center;
    margin-top: 15px;
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.3s ease 0.2s;
}

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

/* Portfolio Modal */
.portfolio-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    z-index: 1000;
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 1000px;
    margin: 50px auto;
    background: #fff;
    border-radius: 15px;
    overflow: hidden;
}

.close-modal {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 30px;
    color: #fff;
    cursor: pointer;
    z-index: 1001;
}

.modal-body {
    padding: 20px;
}

.modal-body img {
    width: 100%;
    border-radius: 10px;
}

.modal-details {
    margin-top: 20px;
}

/* Animation Classes */
[data-aos] {
    opacity: 0;
    transition: all 0.6s ease;
}

[data-aos="fade-up"] {
    transform: translateY(50px);
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
    .portfolio-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 20px;
    }
    
    .filter-btn {
        padding: 8px 15px;
        font-size: 14px;
    }
}