.container3 {
    
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 8rem 0rem 10rem;
}

.portfolio {
    padding: var(--section-padding);
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}
.portfolio::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
}

.portfolio::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    margin-top: 3rem;
    margin-top: 3rem;
}
@keyframes fadeInUp {
    0% {
      opacity: 0;
      transform: translateY(30px);
    }
    100% {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  .portfolio-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    opacity: 0; /* Oculto inicialmente */
  }
  
  .portfolio-item.visible {
    animation: fadeInUp 0.8s ease forwards;
  }
  
  /* preguntas  */
  .preguntas-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-xxl);
    position: relative;
}

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

.portfolio-image {
    width: 100%;
    height: auto;
    aspect-ratio: 16/9; /* O el que prefieras */
    overflow: hidden;
    border-radius: 16px; /* Si querés bordes redondeados como en tu captura */
    position: relative;
}

.portfolio-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 2rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.portfolio-overlay h3 {
    color: white;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.portfolio-overlay p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 1.5rem;
    transform: translateY(20px);
    transition: transform 0.3s ease 0.1s;
}

.portfolio-overlay .btn {
    transform: translateY(20px);
    transition: transform 0.3s ease 0.2s;
}

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

/* Responsive */
@media (max-width: 768px) {
    .portfolio-grid {
        grid-template-columns: 1fr;
        padding: 0 1rem;
    }
    
    .portfolio-image {
        height: 250px;
    }
}
@media (min-width: 375px)and (max-width: 425px){
        /* portfolio */
        .container3 {
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 8rem 0rem 7rem;
        }
    }