/* ==========================================================================
   MÓDULO: SECCIÓN PORTAFOLIO DE PROYECTOS (COMPRESIÓN MÁXIMA VIEWPORT)
   ========================================================================== */

.portafolio-section {
    background-color: var(--color-white);
    /* El scroll-padding-top global (100px) ya reserva el espacio del header en
       cada snap de scroll; este padding es solo aire adicional, no offset del navbar. */
    padding-top: 30px;
    padding-bottom: 100px;
}

.portafolio-section .section-header {
    margin-bottom: 25px; 
}

.portafolio-section .section-title {
    font-family: var(--font-primary);
    font-size: 1.85rem;
    color: var(--color-primary-dark);
    font-weight: 800;
    margin-bottom: 8px;
}

.portafolio-section .section-subtitle {
    font-family: var(--font-primary);
    font-size: 0.95rem;
    color: var(--color-text-muted);
    max-width: 750px;
    margin: 0 auto;
    line-height: 1.6;
}

.portfolio-filters {
    margin-bottom: 30px;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
}

.filter-btn {
    font-family: var(--font-primary);
    background-color: transparent;
    border: 2px solid var(--color-primary-light);
    color: var(--color-text);
    padding: 6px 18px; 
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

/* --- GRILLA COMPACTA --- */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); 
    gap: 25px; 
}

.portfolio-item {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s ease, opacity 0.4s ease;
    opacity: 1;
    transform: scale(1);
    display: block;
    background-color: var(--color-primary-dark);
}

/* --- OCULTAMIENTO INICIAL POR DEFECTO --- */
.project-hidden-card {
    display: none !important;
    opacity: 0;
}

.portfolio-item.hidden {
    display: none;
    opacity: 0;
    transform: scale(0.8);
}

.portfolio-item:hover {
    box-shadow: 0 15px 35px rgba(33, 79, 80, 0.15);
    transform: translateY(-5px); 
}

/* --- CONTENEDOR DE IMAGEN (FORMATO 195px) --- */
.portfolio-img-wrapper {
    position: relative;
    width: 100%;
    height: 195px; 
    overflow: hidden;
    border-radius: 12px;
}

.portfolio-img {
    width: 100%;
    height: 100%;
    object-fit: cover; 
    object-position: center;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.portfolio-item:hover .portfolio-img {
    transform: scale(1.12); 
}

/* --- CAPA OSCURA SUPERPUESTA (OVERLAY CORPORATIVO) --- */
.portfolio-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* Reemplazado el gradiente a los tonos verde oscuro #214f50 oficiales */
    background: linear-gradient(to top, rgba(33, 79, 80, 0.95) 0%, rgba(33, 79, 80, 0.3) 50%, rgba(0,0,0,0) 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 15px 20px; 
    opacity: 0.85; 
    transition: opacity 0.4s ease, padding-bottom 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1; 
    padding-bottom: 20px; 
}

/* --- TEXTOS DEL OVERLAY --- */
.portfolio-category {
    font-family: var(--font-primary);
    display: inline-block;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-accent); /* Menta Pastel Oficial #9bc7c1 */
    font-weight: 800;
    margin-bottom: 5px;
    transform: translateY(10px);
    opacity: 0.9;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s ease;
}

.portfolio-title {
    font-family: var(--font-primary);
    font-size: 1.05rem; 
    color: var(--color-white);
    margin: 0;
    font-weight: 700;
    transform: translateY(10px);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1) 0.05s; 
}

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

/* ==========================================================================
   TARJETA INTERACTIVA "VER MÁS"
   ========================================================================== */
.load-more-card {
    background-color: var(--color-bg-light);
    border: 2px dashed rgba(48, 122, 109, 0.3); /* Cambiado a var(--color-primary) con transparencia */
    height: 195px; 
    display: flex !important;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: none;
    transition: background-color 0.4s ease, border-color 0.4s ease, transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.load-more-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.load-more-icon-box {
    width: 40px;
    height: 40px;
    background-color: var(--color-white);
    color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(33, 79, 80, 0.06);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.4s ease, color 0.4s ease;
}

.load-more-icon-box svg {
    width: 18px;
    height: 18px;
}

.load-more-text {
    font-family: var(--font-primary);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    letter-spacing: 0.5px;
    transition: color 0.4s ease;
}

.load-more-card:hover {
    background-color: rgba(48, 122, 109, 0.03);
    border-color: var(--color-primary);
    transform: translateY(-4px);
}

.load-more-card:hover .load-more-icon-box {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: rotate(90deg); 
}

.load-more-card:hover .load-more-text {
    color: var(--color-primary);
}

.load-more-card.is-expanded {
    border-style: solid;
    background-color: rgba(48, 122, 109, 0.05);
}

.load-more-card.is-expanded .load-more-icon-box {
    transform: rotate(45deg); 
    background-color: var(--color-primary-dark);
    color: var(--color-white);
}

.load-more-card.is-expanded:hover .load-more-icon-box {
    transform: rotate(135deg); 
}

@media (max-width: 768px) {
    .portfolio-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        gap: 20px;
    }
    .portafolio-section {
        padding-top: 25px;
        padding-bottom: 70px;
    }
}