/*==================================================
QUANTITY SELECTOR COMPONENT (SIDV)
==================================================*/

:root {
    --sidv-qty-bg: #FFFFFF;
    --sidv-qty-border: #E8EDF3;
    --sidv-qty-border-hover: #D5DEE8;
    --sidv-qty-focus-ring: rgba(240, 151, 0, 0.2);
    --sidv-qty-accent: #f09700;
    --sidv-qty-accent-hover: #d88700;
    --sidv-qty-text: #025672;
    --sidv-qty-btn-bg: #F8FAFC;
    --sidv-qty-btn-text: #025672;
    --sidv-qty-disabled-bg: #F1F5F9;
    --sidv-qty-disabled-text: #94A3B8;
}

.sidv-quantity-selector {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 130px;
    height: 38px;
    overflow: hidden;
    position: relative;
    background-color: var(--sidv-qty-bg);
    border: 1px solid var(--sidv-qty-border);
    border-radius: 10px;
    user-select: none;
    transition: 
        border-color 0.2s ease,
        box-shadow 0.2s ease,
        opacity 0.2s ease;
}

.sidv-quantity-selector:hover {
    border-color: var(--sidv-qty-border-hover);
}

.sidv-quantity-selector:focus-within {
    border-color: var(--sidv-qty-accent);
    box-shadow: 0 0 0 3px var(--sidv-qty-focus-ring);
}

/*==================================================
BOTONES DE INCREMENTO / DECREMENTO
==================================================*/

.sidv-quantity-selector__btn,
.sidv-quantity-selector .qty-btn--minus,
.sidv-quantity-selector .qty-btn--plus,
.sidv-quantity-selector .qty-minus,
.sidv-quantity-selector .qty-plus {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 100%;
    padding: 0;
    margin: 0;
    border: none;
    background-color: var(--sidv-qty-btn-bg);
    color: var(--sidv-qty-btn-text);
    cursor: pointer;
    flex-shrink: 0;
    touch-action: manipulation;
    user-select: none;
    transition: 
        background-color 0.2s ease,
        color 0.2s ease,
        opacity 0.2s ease;
}

.sidv-quantity-selector__btn:hover:not(:disabled):not(.is-disabled),
.sidv-quantity-selector .qty-btn--minus:hover:not(:disabled):not(.is-disabled),
.sidv-quantity-selector .qty-btn--plus:hover:not(:disabled):not(.is-disabled) {
    background-color: var(--sidv-qty-accent);
    color: #FFFFFF;
}

.sidv-quantity-selector__btn:active:not(:disabled):not(.is-disabled),
.sidv-quantity-selector .qty-btn--minus:active:not(:disabled):not(.is-disabled),
.sidv-quantity-selector .qty-btn--plus:active:not(:disabled):not(.is-disabled) {
    background-color: var(--sidv-qty-accent-hover);
    color: #FFFFFF;
}

.sidv-quantity-selector__btn:focus-visible {
    outline: 2px solid var(--sidv-qty-accent);
    outline-offset: -2px;
}

/* Estado deshabilitado (Atributo :disabled o clase .is-disabled de JS) */
.sidv-quantity-selector__btn:disabled,
.sidv-quantity-selector__btn[disabled],
.sidv-quantity-selector__btn.is-disabled,
.sidv-quantity-selector .qty-btn--minus.is-disabled,
.sidv-quantity-selector .qty-btn--plus.is-disabled {
    opacity: 0.45;
    cursor: not-allowed;
    pointer-events: none;
    background-color: var(--sidv-qty-disabled-bg);
    color: var(--sidv-qty-disabled-text);
}

.sidv-quantity-selector__btn .sidv-icon,
.sidv-quantity-selector__btn svg,
.sidv-quantity-selector button svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
    pointer-events: none;
    flex-shrink: 0;
}

/*==================================================
INPUT NUMÉRICO
==================================================*/

.sidv-quantity-selector__input,
.sidv-quantity-selector input.qty,
.sidv-quantity-selector input[type="number"] {
    flex: 1;
    width: 100%;
    height: 100%;
    border: none;
    background: transparent;
    text-align: center;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--sidv-qty-text);
    padding: 0 0.25rem;
    margin: 0;
    -moz-appearance: textfield;
    appearance: textfield;
}

/* Ocultar spinners numéricos nativos del navegador */
.sidv-quantity-selector__input::-webkit-outer-spin-button,
.sidv-quantity-selector__input::-webkit-inner-spin-button,
.sidv-quantity-selector input.qty::-webkit-outer-spin-button,
.sidv-quantity-selector input.qty::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.sidv-quantity-selector__input:focus,
.sidv-quantity-selector input.qty:focus {
    outline: none;
}

.sidv-quantity-selector__input:disabled,
.sidv-quantity-selector input.qty:disabled {
    background-color: transparent;
    color: var(--sidv-qty-disabled-text);
    cursor: not-allowed;
}

/*==================================================
ESTADOS DEL CONTENEDOR Y CUALIDADES DE CARGA (AJAX)
==================================================*/

.sidv-quantity-selector.is-loading {
    pointer-events: none;
    opacity: 0.75;
}

/* Indicador visual de carga AJAX (Barra pulsante inferior) */
.sidv-quantity-selector.is-loading::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--sidv-qty-accent);
    animation: sidv-qty-loading-pulse 1s infinite ease-in-out;
}

@keyframes sidv-qty-loading-pulse {
    0% {
        opacity: 0.3;
        transform: scaleX(0.2);
    }
    50% {
        opacity: 1;
        transform: scaleX(0.8);
    }
    100% {
        opacity: 0.3;
        transform: scaleX(0.2);
    }
}

.sidv-quantity-selector.is-disabled,
.sidv-quantity-selector--disabled {
    opacity: 0.55;
    pointer-events: none;
    background-color: var(--sidv-qty-btn-bg);
}

/*==================================================
RESPONSIVE (DISPOSITIVOS MÓVILES)
==================================================*/

@media (max-width: 768px) {
    .sidv-quantity-selector {
        height: 36px;
        max-width: 120px;
    }

    .sidv-quantity-selector__btn,
    .sidv-quantity-selector .qty-btn--minus,
    .sidv-quantity-selector .qty-btn--plus {
        width: 32px;
    }

    .sidv-quantity-selector__input,
    .sidv-quantity-selector input.qty {
        font-size: 0.82rem;
    }
}