/* Ocultar select original */
select#pa_size {
    display: none !important;
}

/* Contenedor */
.pa-size-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
}

/* Botón */
.pa-size-button {
    position: relative;
    min-width: 44px;
    text-align: center;
    padding: 10px 14px;
    border: 1px solid #ccc;
    background: #fff;
    cursor: pointer;
    font-weight: 600;
    transition: all .2s ease;
}

/* Hover */
.pa-size-button:hover {
    border-color: #000;
}

/* Activo */
.pa-size-button.active {
    background: #000;
    color: #fff;
    border-color: #000;
}

/* Deshabilitado */
.pa-size-button.disabled {
    opacity: 0.5;
    pointer-events: auto;
    cursor: not-allowed;
    border-color: #999;
}

/* Línea diagonal roja */
.pa-size-button.disabled::after {
    content: "";
    position: absolute;
    top: 50%;
    left: -10%;
    width: 120%;
    height: 2px;
    background: #d63638;
    transform: rotate(-45deg);
}

/* Tooltip */
.pa-size-button.disabled:hover::before {
    content: "Out of stock";
    position: absolute;
    top: -28px;
    left: 50%;
    transform: translateX(-50%);
    background: #000;
    color: #fff;
    padding: 4px 8px;
    font-size: 12px;
    white-space: nowrap;
    z-index: 50;
}

.pa-size-button.out-of-stock {
    opacity: 0.5;
    cursor: not-allowed;
    z-index: 9;
}

/* Línea roja diagonal */
.pa-size-button.out-of-stock::after {
    content: "";
    position: absolute;
    top: 50%;
    left: -10%;
    width: 120%;
    height: 2px;
    background: #d63638;
    transform: rotate(-45deg);
}