.portfolio {
    padding: 5rem 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h3 {
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
    color: #2b4770;
    position: relative;
    padding-bottom: 1rem;
}

.section-title h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, #2b4770, #6a89cc);
    border-radius: 2px;
}

.section-title p {
    color: #666;
    max-width: 600px;
    margin: 0 auto;
    font-weight: 300;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.portfolio-item {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    aspect-ratio: 1/1;
    cursor: pointer;
}

.portfolio-item a {
    display: block;
    width: 100%;
    height: 100%;
}

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

.portfolio-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
}

.portfolio-item:hover img {
    transform: scale(1.08);
}

.item-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.85), transparent);
    color: white;
    padding: 1.5rem;
    transform: translateY(0);
    opacity: 0;
    transition: all 0.4s ease;
}

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

.item-overlay h4 {
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
    font-weight: 500;
    transform: translateY(20px);
    transition: transform 0.3s ease 0.1s;
}

.item-overlay p {
    color: #e0e0e0;
    font-size: 0.9rem;
    font-weight: 300;
    transform: translateY(20px);
    transition: transform 0.3s ease 0.2s;
}

.portfolio-item:hover .item-overlay h4,
.portfolio-item:hover .item-overlay p {
    transform: translateY(0);
}

/* Estilos para el lightbox */
.mfp-image-holder .mfp-close, 
.mfp-iframe-holder .mfp-close {
    color: white;
    font-size: 40px;
    padding: 10px;
}

.mfp-title {
    color: white;
    font-size: 16px;
    padding: 10px;
    text-align: center;
}

/* Mejoras para dispositivos móviles */
@media (max-width: 768px) {
    .portfolio {
        padding: 3rem 5%;
    }
    
    .section-title h3 {
        font-size: 1.8rem;
    }
    
    .portfolio-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1.5rem;
    }
    
    .portfolio-item:hover {
        transform: none; /* Eliminar transformación en móvil */
    }
    
    .item-overlay {
        opacity: 1; /* Mostrar overlay siempre en móvil */
        background: rgba(0, 0, 0, 0.7);
        padding: 1rem;
    }
    
    .item-overlay h4,
    .item-overlay p {
        transform: translateY(0); /* Mostrar texto siempre en móvil */
    }
    
    .item-overlay h4 {
        font-size: 1rem;
    }
    
    .item-overlay p {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .portfolio {
        padding: 2rem 5%;
    }
    
    .section-title {
        margin-bottom: 2rem;
    }
    
    .section-title h3 {
        font-size: 1.6rem;
        padding-bottom: 0.8rem;
    }
    
    .section-title h3::after {
        width: 60px;
    }
}