#proyectos {
    width: var(--medida-ancho);
    margin-bottom: 100px;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    width: 100%;
    margin: 0 auto;
}

/* Tarjeta */
.project-card {
    position: relative;
    width: 100%;
    height: 320px;
    background: var(--color-bg-tarjetas);
    overflow: hidden;
    box-shadow: var(--sombra-media);
}

/* FRONT */
.card-front {
    position: absolute;
    inset: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    z-index: 3;
    transition: opacity 0.6s ease-in-out, transform 0.6s ease-in-out;
    will-change: opacity, transform;
}

.card-front img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.card-overlay {
    position: absolute;
    inset: 0;
    background: var(--color-bg-secundario-op);
    z-index: 2;
}

.card-front h3 {
    z-index: 4;
    font-size: 1.4rem;
    color: var(--color-texto-principal);
    text-align: center;
    margin: 0;
}

/* BACK */
.card-back {
    position: absolute;
    inset: 0;
    background: var(--color-bg-tarjetas);
    color: var(--color-texto-principal);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    text-align: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.6s ease-in-out, transform 0.6s ease-in-out;
    transform: translateY(12px);
    z-index: 2;
}

/* Hover */
.project-card:hover .card-front {
    opacity: 0;
    transform: scale(0.985);
    pointer-events: none;
}

.project-card:hover .card-back {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
    z-index: 5;
}

/* Botón */
.card-button {
    margin-top: 15px;
    padding: 10px 18px;
    border-radius: var(--borde-radio);
    background: var(--color-texto-encabezados);
    color: var(--color-texto-principal);
    font-weight: bold;
    text-decoration: none;
    cursor: pointer;
    transition: 0.3s ease-in-out;
}

.card-button:hover {
    filter: brightness(1.1);
}


/* 🟩🟩 ↓ RESPONSIVE ↓ 🟩🟩 */

/* Tablets */
@media (max-width: 1024px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 18px;
    }
}

/* Móviles grandes */
@media (max-width: 768px) {
    #proyectos {
        width: 95%;
        margin-bottom: 80px;
    }

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

    .project-card {
        height: 300px;
    }

    .card-front h3 {
        font-size: 1.25rem;
    }

    .card-back {
        padding: 18px;
    }
}

/* Móviles pequeños */
@media (max-width: 480px) {

    .project-card {
        height: 280px;
    }

    .card-front h3 {
        font-size: 1.15rem;
    }

    .card-button {
        padding: 8px 15px;
        font-size: 0.9rem;
    }
}