/* Estilos mejorados para la sección Portfolio */

.portfolio {
    background-color: #0a0a0a;
    position: relative;
    overflow: hidden;
}

.portfolio::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(-45deg, rgba(255, 106, 0, 0.03) 0%, rgba(0, 0, 0, 0) 70%);
    z-index: 1;
}

.portfolio .container {
    position: relative;
    z-index: 2;
}

/* Filtros */
.portfolio-filter {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 40px;
    gap: 10px;
}

.filter-btn {
    background-color: rgba(20, 20, 20, 0.7);
    color: #d0d0d0;
    border: 1px solid rgba(255, 106, 0, 0.15);
    border-radius: 30px;
    padding: 10px 20px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    outline: none;
}

.filter-btn:hover {
    background-color: rgba(255, 106, 0, 0.1);
    color: #ffffff;
}

.filter-btn.active {
    background-color: var(--color-primary);
    color: #ffffff;
    border-color: var(--color-primary);
    box-shadow: 0 4px 15px rgba(255, 106, 0, 0.3);
}

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

/* Elementos del portfolio */
.portfolio-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    height: 300px;
    transition: all 0.5s ease;
    opacity: 0;
    transform: translateY(20px);
}

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

.portfolio-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0,0,0,0) 0%, rgba(0,0,0,0.8) 100%);
    z-index: 1;
    opacity: 0;
    transition: opacity 0.5s ease;
}

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

.portfolio-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s ease;
}

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

/* Overlay con información */
.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 20px;
    z-index: 2;
    transition: all 0.5s ease;
}

.portfolio-content {
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.5s ease;
}

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

.portfolio-category {
    display: inline-block;
    background-color: var(--color-primary);
    color: #ffffff;
    font-size: 0.8rem;
    padding: 4px 10px;
    border-radius: 20px;
    margin-bottom: 10px;
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 1px;
}

.portfolio-title {
    color: #ffffff;
    margin-bottom: 10px;
    font-size: 1.3rem;
    font-weight: 600;
}

.portfolio-description {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    margin-bottom: 15px;
    line-height: 1.5;
}

.portfolio-link {
    display: inline-block;
    color: #ffffff;
    background-color: var(--color-primary);
    padding: 8px 20px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
}

.portfolio-link:hover {
    background-color: #ff7c1f;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 106, 0, 0.4);
}

/* Animaciones para los filtros */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.portfolio-item {
    animation: fadeIn 0.6s ease forwards;
    animation-delay: calc(var(--item-index) * 0.1s);
}

/* Responsivo */
@media (max-width: 992px) {
    .portfolio-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .portfolio-filter {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 15px;
    }
    
    .filter-btn {
        flex-shrink: 0;
        padding: 8px 15px;
        font-size: 0.85rem;
    }
}

@media (max-width: 576px) {
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-item {
        height: 250px;
    }
}