/* Portfolio Section Styles */

.portfolio {
    background: var(--bg-primary);
    margin: 0;
    padding: 100px 5%;
    width: 100%;
    border-radius: 0;
    transition: background-color 0.3s ease;
}

.portfolio-filter {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 25px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 25px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
    font-family: 'Inter', sans-serif;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--text-primary);
    color: var(--bg-primary);
    border-color: var(--text-primary);
    transform: translateY(-2px);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    width: 100%;
}

/* When there is a single visible item we want it to stay a reasonable fixed width */
.portfolio-grid.single-item {
    grid-template-columns: 420px;
    justify-content: center;
}

.portfolio-item {
    border-radius: 15px;
    overflow: hidden;
    position: relative;
    cursor: pointer;
    transition: var(--transition);
}

.portfolio-item.hidden {
    display: none;
}

.portfolio-image {
    position: relative;
    overflow: hidden;
    border-radius: 15px;
    aspect-ratio: 4/3;
}

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

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 30px;
    opacity: 0;
    transition: var(--transition);
    text-align: center;
}

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

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

.portfolio-overlay h3 {
    font-size: 1.5rem;
    font-family: 'Poppins', sans-serif;
    color: #ffffff;
    margin-bottom: 12px;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.portfolio-overlay p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 20px;
    line-height: 1.6;
}

.portfolio-link {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--accent-primary);
    color: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    text-decoration: none;
    transition: var(--transition);
}

.portfolio-link:hover {
    background: var(--accent-hover);
    transform: rotate(90deg) scale(1.1);
    box-shadow: 0 5px 20px rgba(0, 217, 255, 0.5);
}

/* Responsive Design */
@media (max-width: 968px) {
    .portfolio {
        padding: 70px 4%;
    }

    .portfolio-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 20px;
    }

    .portfolio-filter {
        gap: 10px;
    }

    .filter-btn {
        padding: 8px 20px;
        font-size: 12px;
    }
}

@media (max-width: 640px) {
    .portfolio {
        padding: 60px 4%;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .portfolio-overlay h3 {
        font-size: 20px;
    }

    .portfolio-overlay p {
        font-size: 12px;
    }
}