body { flex-direction: column; }

#contenido_principal {
    width: 100%;
    max-width: 100%;
    flex: 1;
    padding: 0;
}

.producto__layout {
    display: grid;
    grid-template-columns: 1fr 1fr 320px;
    gap: 0;
    padding: 3rem 4rem;
    max-width: 1400px;
    margin: 0 auto;
}

/* ── COLUMNA IZQUIERDA ── */
.producto__info {
    padding-right: 1rem;
}

.producto__nombre {
    font-family: 'Inclusive Sans', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--demente-rojo);
    text-transform: uppercase;
    line-height: 1.1;
    margin-bottom: 0.5rem;
}

.producto__subtitulo {
    font-family: 'Inclusive Sans', sans-serif;
    font-size: 1rem;
    font-weight: 400;
    color: var(--demente-rojo);
    margin-bottom: 1.5rem;
}

.producto__precio {
    font-family: 'Inclusive Sans', sans-serif;
    font-size: 2rem;
    font-weight: 400;
    color: var(--demente-negro);
    margin-bottom: 1.5rem;
}

.producto__descripcion {
    font-family: 'Inclusive Sans', sans-serif;
    font-size: 0.95rem;
    font-weight: 400;
    line-height: 1.6;
    color: var(--demente-negro);
    margin-bottom: 2rem;
}

.producto__btn-comprar {
    display: block;
    width: 100%;
    max-width: 280px;
    background: var(--demente-negro);
    color: var(--demente-blanco);
    border: none;
    border-radius: 9px;
    padding: 1rem 2rem;
    font-family: 'Inclusive Sans', sans-serif;
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    transition: background 0.15s;
}

.producto__btn-comprar:hover {
    background: var(--demente-rojo);
}

/* ── COLUMNA CENTRO ── */
.producto__galeria {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 2rem;
    position: relative;
    align-self: start;
}

.producto__foto-principal {
    width: 100%;
    max-width: 480px;
    object-fit: contain;
}

/* ── COLUMNA DERECHA (panel rojo) ── */
.producto__layout {
    display: grid;
    grid-template-columns: 1fr 1fr 320px;
    gap: 0;
    padding: 3rem 4rem 0 4rem;
    max-width: 1400px;
    margin: 0 auto;
    align-items: stretch;
    min-height: calc(100vh - 60px);
}

.producto__panel {
    background: var(--demente-rojo);
    color: var(--demente-blanco);
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-self: stretch;
}

.producto__panel-dato {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.producto__panel-numero {
    font-family: 'Inclusive Sans', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--demente-negro);
    line-height: 1;
}

.producto__panel-label {
    font-family: 'Inclusive Sans', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: var(--demente-negro);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.producto__panel-titulo {
    font-family: 'Inclusive Sans', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: var(--demente-negro);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.producto__panel-lista {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.producto__panel-lista li {
    font-family: 'Inclusive Sans', sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--demente-negro);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.producto__panel-divisor {
    border: none;
    border-top: 1px solid rgba(0,0,0,0.2);
    margin: 0;
}

@media (max-width: 1024px) {
    .producto__layout {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto auto;
    }
    .producto__panel {
        grid-column: 1 / -1;
        flex-direction: row;
        flex-wrap: wrap;
    }
}

@media (max-width: 640px) {
    .producto__layout {
        grid-template-columns: 1fr;
        padding: 1.5rem;
    }
    .producto__panel {
        grid-column: 1;
    }
}

/* ── BOTÓN FAVORITOS ── */
.producto__fav-contenedor {
    position: absolute;
    top: 0;
    left: -1rem;
    margin-right: 30px;
}

.fav-btn {
    background: transparent;
    border: none;
    color: var(--che_commerce-gris-medio);
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
    padding: 0.25rem;
}

.fav-btn--activo {
    color: var(--demente-rojo);
}