/* ==============================================================================
   INTERFAZ TÁCTIL E INTERACTIVA DEL PUNTO DE VENTA (POS)
   ============================================================================== */

.pos-layout {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 24px;
    height: calc(100vh - 130px);
    overflow: hidden;
}

/* Columna Izquierda: Catálogo de Productos */
.pos-catalog {
    display: flex;
    flex-direction: column;
    gap: 16px;
    overflow: hidden;
}

.pos-search-bar {
    display: flex;
    gap: 12px;
}

.category-tabs {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 8px;
}

.category-tab {
    padding: 8px 16px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
    transition: all var(--transition-fast);
}

.category-tab:hover {
    color: var(--text-main);
    border-color: var(--text-muted);
}

.category-tab.active {
    background-color: var(--color-primary);
    color: var(--text-inverse);
    border-color: var(--color-primary);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
    overflow-y: auto;
    flex-grow: 1;
    padding-right: 4px;
}

/* Tarjetas de Producto en el POS */
.product-pos-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.product-pos-card:hover {
    transform: translateY(-2px);
    border-color: var(--color-primary);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.15);
}

.product-pos-card.out-of-stock {
    opacity: 0.6;
    cursor: not-allowed;
}

.product-pos-card.out-of-stock:hover {
    transform: none;
    border-color: var(--border-color);
    box-shadow: none;
}

.product-pos-badge {
    margin-left: auto;
}

.product-pos-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    gap: 8px;
}

.product-pos-name {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.3;
}

.product-pos-stock {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.product-pos-price {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--color-success);
}

/* Columna Derecha: Panel de Carrito */
.pos-cart-panel {
    background-color: var(--bg-sidebar);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: var(--glass-shadow);
}

.cart-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    font-weight: 700;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.clear-cart {
    background: none;
    border: none;
    color: var(--color-danger);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
}

.cart-items {
    flex-grow: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Ítem del Carrito */
.cart-item {
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.cart-item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.cart-item-name {
    font-size: 0.85rem;
    font-weight: 600;
    max-width: 80%;
}

.remove-cart-item {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
}

.remove-cart-item:hover {
    color: var(--color-danger);
}

.cart-item-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
}

/* Control de Cantidad (+/-) */
.quantity-control {
    display: flex;
    align-items: center;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.quantity-btn {
    background: none;
    border: none;
    width: 28px;
    height: 28px;
    color: var(--text-main);
    cursor: pointer;
    font-weight: bold;
}

.quantity-btn:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.quantity-value {
    width: 32px;
    text-align: center;
    font-size: 0.85rem;
    font-weight: 600;
}

/* Selector de Precios del Carrito */
.price-type-select {
    padding: 4px 6px;
    font-size: 0.8rem;
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    border-radius: var(--radius-sm);
}

.cart-item-subtotal {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-success);
}

/* Área de Configuración de Serie y Garantía en el Carrito */
.cart-item-meta {
    font-size: 0.8rem;
    border-top: 1px dashed var(--border-color);
    padding-top: 8px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.series-select-btn {
    width: 100%;
    text-align: left;
    background-color: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.2);
    color: var(--color-info);
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    cursor: pointer;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.series-select-btn:hover {
    background-color: rgba(6, 182, 212, 0.15);
}

/* Resumen del Carrito y Cobro */
.cart-summary {
    border-top: 1px solid var(--border-color);
    background-color: rgba(0, 0, 0, 0.15);
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.summary-row.total {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--text-main);
    border-top: 1px solid var(--border-color);
    padding-top: 8px;
}

.checkout-btn {
    width: 100%;
    padding: 12px;
    font-size: 1rem;
}

/* Modales y chips de Series */
.series-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
    max-height: 200px;
    overflow-y: auto;
}

.serie-chip {
    padding: 6px 12px;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.8rem;
    cursor: pointer;
    user-select: none;
    transition: all var(--transition-fast);
}

.serie-chip:hover {
    border-color: var(--color-primary);
}

.serie-chip.selected {
    background-color: var(--color-primary);
    color: var(--text-inverse);
    border-color: var(--color-primary);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.serie-chip.disabled {
    opacity: 0.4;
    cursor: not-allowed;
    text-decoration: line-through;
}