* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background-color: #eef2f5;
            color: #333;
            line-height: 1.4;
            font-size: 14px;
            padding: 10px;
        }

        .container {
            max-width: 100%;
            margin: 0 auto;
            background: white;
            border-radius: 8px;
            padding: 15px;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
        }

        header {
            background: linear-gradient(135deg, #3498db, #2c3e50);
            color: white;
            padding: 12px 0;
            border-radius: 8px;
            margin-bottom: 20px;
            text-align: center;
            position: relative;
        }

        header h1 {
            font-size: 1.3rem;
            margin-bottom: 4px;
        }

        .dashboard {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }

        .dashboard-section {
            background: white;
            border-radius: 8px;
            padding: 20px;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
            border: 1px solid #e0e0e0;
            height: calc(100vh - 150px);
            min-height: 500px;
            display: flex;
            flex-direction: column;
            overflow: hidden;
        }

        .dashboard-section.full-width {
            grid-column: 1 / -1;
            height: auto;
            min-height: 600px;
        }

        /* Columna izquierda solo con formulario (sin carrito) */
        .dashboard-section.venta-form-section {
            height: auto;
            min-height: auto;
        }

        .section-title {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.2rem;
            color: #2c3e50;
            margin-bottom: 15px;
            padding-bottom: 8px;
            border-bottom: 2px solid #3498db;
        }

        .fecha-control {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
        }

        .fecha-input {
            padding: 6px 10px;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-size: 0.85rem;
        }

        /* NUEVA DISTRIBUCIÓN - VENTA HEADER */
        .venta-header {
            display: grid;
            grid-template-columns: 1fr;
            gap: 10px;
            margin-bottom: 10px;
        }

        .venta-line-1 {
            display: grid;
            grid-template-columns: 80px 1fr 100px;
            gap: 10px;
            align-items: end;
        }

        .venta-line-2 {
            display: grid;
            grid-template-columns: 1fr 100px;
            gap: 10px;
            align-items: end;
        }

        .form-group {
            margin-bottom: 0;
        }

        .form-group label {
            display: block;
            margin-bottom: 3px;
            font-weight: 600;
            color: #333;
            font-size: 0.9rem;
        }

        .form-group input,
        .form-group select {
            width: 100%;
            padding: 8px;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-size: 0.9rem;
            background: white;
            color: #333;
        }

        .form-group input:focus,
        .form-group select:focus {
            outline: none;
            border-color: #3498db;
        }

        .search-container {
            position: relative;
        }

        .search-dropdown {
            position: absolute;
            background: white;
            border: 1px solid #ddd;
            border-radius: 4px;
            max-height: 200px;
            overflow-y: auto;
            width: 100%;
            z-index: 1000;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
            font-size: 0.8rem;
            display: none;
        }

        .search-dropdown-item {
            padding: 10px;
            cursor: pointer;
            border-bottom: 1px solid #ddd;
            transition: background-color 0.2s;
        }

        .search-dropdown-item:hover {
            background-color: #3498db;
            color: white;
        }

        /* CARRITO EXPANDIDO */
        .cart-container {
            background: #f8f9fa;
            border-radius: 6px;
            padding: 15px;
            margin: 10px 0;
            border: 1px solid #e9ecef;
            flex: 1;
            display: flex;
            flex-direction: column;
            min-height: 0;
        }

        .cart-items-container {
            flex: 1;
            overflow-y: auto;
            max-height: none;
            margin-bottom: 10px;
            min-height: 0;
        }

        .cart-header {
            display: grid;
            grid-template-columns: 80px 1fr 100px 100px 80px;
            gap: 10px;
            padding: 8px 12px;
            background: #2c3e50;
            color: white;
            border-radius: 4px;
            font-weight: 600;
            font-size: 0.8rem;
            margin-bottom: 8px;
            position: sticky;
            top: 0;
            z-index: 10;
        }

        .cart-item {
            display: grid;
            grid-template-columns: 80px 1fr 100px 100px 80px;
            gap: 10px;
            padding: 10px 12px;
            background: white;
            border-radius: 4px;
            margin-bottom: 6px;
            border: 1px solid #e9ecef;
            align-items: center;
            transition: all 0.2s ease;
        }

        .cart-item:hover {
            background: #f8f9fa;
            border-color: #3498db;
        }

        .cart-item:last-child {
            margin-bottom: 0;
        }

        .quantity-input {
            width: 70px;
            padding: 6px;
            border: 1px solid #ddd;
            border-radius: 3px;
            text-align: center;
            font-size: 0.8rem;
            -moz-appearance: textfield;
            appearance: textfield;
        }

        .quantity-input::-webkit-outer-spin-button,
        .quantity-input::-webkit-inner-spin-button {
            -webkit-appearance: none;
            margin: 0;
        }

        .price-input {
            width: 90px;
            padding: 6px;
            border: 1px solid #ddd;
            border-radius: 3px;
            text-align: center;
            font-size: 0.8rem;
        }

        .product-desc {
            font-size: 0.85rem;
            line-height: 1.3;
        }

        .subtotal {
            font-weight: 600;
            color: #2c3e50;
            font-size: 0.85rem;
        }

        .cart-actions {
            display: flex;
            gap: 4px;
        }

        .cart-total {
            background: #ecf0f1;
            padding: 12px;
            border-radius: 4px;
            text-align: right;
            font-weight: bold;
            font-size: 1.1rem;
            border-top: 2px solid #3498db;
            margin-top: auto;
            flex-shrink: 0;
        }

        .empty-cart {
            text-align: center;
            color: #7f8c8d;
            font-size: 0.9rem;
            padding: 30px;
            background: white;
            border-radius: 4px;
            border: 2px dashed #ddd;
        }

        /* BOTONES COMPACTOS */
        .btn {
            padding: 8px 12px;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 600;
            transition: all 0.3s ease;
            font-size: 0.85rem;
            text-align: center;
            height: 38px;
        }

        .btn-primary {
            background-color: #3498db;
            color: white;
        }

        .btn-primary:hover {
            background-color: #2980b9;
        }

        .btn-success {
            background-color: #27ae60;
            color: white;
        }

        .btn-success:hover {
            background-color: #219a52;
        }

        .btn-warning {
            background-color: #f39c12;
            color: white;
        }

        .btn-warning:hover {
            background-color: #d35400;
        }

        .btn-danger {
            background-color: #e74c3c;
            color: white;
        }

        .btn-danger:hover {
            background-color: #c0392b;
        }

        .btn-info {
            background-color: #17a2b8;
            color: white;
        }

        .btn-info:hover {
            background-color: #138496;
        }

        .btn-full {
            width: 100%;
        }

        .btn-small {
            padding: 8px 12px;
            font-size: 0.8rem;
        }

        .status {
            position: fixed;
            top: 20px;
            right: 20px;
            padding: 12px 20px;
            border-radius: 6px;
            z-index: 10000;
            font-size: 0.85rem;
            display: none;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        }

        .status.success {
            background-color: #d4edda;
            color: #155724;
            border: 1px solid #c3e6cb;
        }

        .status.error {
            background-color: #f8d7da;
            color: #721c24;
            border: 1px solid #f5c6cb;
        }

        .action-btn {
            padding: 6px 10px;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 0.7rem;
            margin: 2px;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 32px;
            height: 28px;
        }

        .icon-btn {
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
            border-radius: 4px;
            transition: all 0.3s ease;
            margin: 0 2px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 28px;
        }

        .icon-btn:hover {
            transform: scale(1.1);
        }

        .btn-view {
            background-color: #3498db;
            color: white;
        }

        .btn-view:hover {
            background-color: #2980b9;
        }

        .btn-reprint {
            background-color: #f39c12;
            color: white;
        }

        .btn-reprint:hover {
            background-color: #d35400;
        }

        .btn-edit {
            background-color: #27ae60;
            color: white;
        }

        .btn-edit:hover {
            background-color: #219a52;
        }

        .btn-delete {
            background-color: #e74c3c;
            color: white;
        }

        .btn-delete:hover {
            background-color: #c0392b;
        }

        .btn-abono {
            background-color: #17a2b8;
            color: white;
        }

        .btn-abono:hover {
            background-color: #138496;
        }

        .btn-cancel {
            background-color: #9b59b6;
            color: white;
        }

        .btn-cancel:hover {
            background-color: #8e44ad;
        }

        .history-container {
            flex: 1;
            display: flex;
            flex-direction: column;
            min-height: 400px;
        }

        .history-table-container {
            flex: 1;
            overflow: auto;
            border: 1px solid #e0e0e0;
            border-radius: 6px;
            margin-top: 10px;
        }

        .history-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.8rem;
            min-width: 800px;
        }

        .history-table th,
        .history-table td {
            padding: 10px;
            text-align: left;
            border-bottom: 1px solid #ddd;
            white-space: nowrap;
        }

        .history-table th {
            background-color: #2c3e50;
            color: white;
            font-weight: 600;
            position: sticky;
            top: 0;
            z-index: 10;
        }

        .history-table tbody tr:hover {
            background-color: #f8f9fa;
        }

        .historial-actions {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
            gap: 10px;
        }

        .filter-buttons {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .filter-btn {
            padding: 8px 12px;
            border: 1px solid #ddd;
            border-radius: 4px;
            background: white;
            cursor: pointer;
            font-size: 0.8rem;
            transition: all 0.3s ease;
        }

        .filter-btn.active {
            background: #3498db;
            color: white;
            border-color: #3498db;
        }

        .filter-btn:hover {
            background: #2980b9;
            color: white;
            border-color: #2980b9;
        }

        .contado-badge {
            background: #27ae60;
            color: white;
            padding: 4px 8px;
            border-radius: 3px;
            font-size: 0.7rem;
            font-weight: bold;
        }

        .pendiente-badge {
            background: #f39c12;
            color: white;
            padding: 4px 8px;
            border-radius: 3px;
            font-size: 0.7rem;
            font-weight: bold;
        }

        .abono-badge {
            background: #17a2b8;
            color: white;
            padding: 4px 8px;
            border-radius: 3px;
            font-size: 0.7rem;
            font-weight: bold;
        }

        .retiro-badge {
            background: #e74c3c;
            color: white;
            padding: 4px 8px;
            border-radius: 3px;
            font-size: 0.7rem;
            font-weight: bold;
        }

        .ingreso-badge {
            background: #27ae60;
            color: white;
            padding: 4px 8px;
            border-radius: 3px;
            font-size: 0.7rem;
            font-weight: bold;
        }

        .total-display {
            font-weight: bold;
        }

        .saldo-pendiente-rojo {
            color: #e74c3c;
            font-weight: bold;
        }

        .saldo-pendiente-negro {
            color: #333;
            font-weight: bold;
        }

        .cliente-equipo {
            font-weight: bold;
        }

        .cliente-nombre {
            font-size: 0.7rem;
            color: #666;
            margin-top: 2px;
        }

        .action-buttons {
            display: flex;
            gap: 4px;
            flex-wrap: wrap;
        }

        /* MENÚ DE ACCIONES COMPACTO */
        .historial-actions-container {
            display: flex;
            align-items: center;
            gap: 4px;
            position: relative;
        }

        .action-menu-wrapper {
            position: relative;
            display: inline-block;
        }

        .menu-toggle-btn {
            background: #95a5a6;
            color: white;
            border: none;
            border-radius: 4px;
            padding: 6px 8px;
            cursor: pointer;
            font-size: 0.9rem;
            transition: all 0.2s ease;
        }

        .menu-toggle-btn:hover {
            background: #7f8c8d;
        }

        .action-dropdown {
            display: none;
            position: absolute;
            right: 0;
            top: 100%;
            margin-top: 4px;
            background: white;
            border: 1px solid #ddd;
            border-radius: 6px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
            z-index: 1000;
            min-width: 140px;
            overflow: visible;
        }

        .action-dropdown.show {
            display: block;
        }

        /* Asegurar que la fila con menú abierto tenga mayor z-index */
        .history-table tr:has(.action-dropdown.show) {
            position: relative;
            z-index: 999;
        }

        .action-menu-wrapper:has(.action-dropdown.show) {
            z-index: 1001;
        }

        .action-dropdown-item {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 14px;
            cursor: pointer;
            transition: background 0.2s;
            font-size: 0.85rem;
            color: #333;
            border-bottom: 1px solid #eee;
        }

        .action-dropdown-item:last-child {
            border-bottom: none;
        }

        .action-dropdown-item:hover {
            background: #f8f9fa;
        }

        .action-dropdown-item i {
            width: 16px;
            text-align: center;
        }

        .action-dropdown-item.delete-item {
            color: #e74c3c;
        }

        .action-dropdown-item.delete-item:hover {
            background: #fff5f5;
        }

        .delete-item-btn {
            background: #e74c3c;
            color: white;
            border: none;
            border-radius: 3px;
            width: 28px;
            height: 28px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            transition: all 0.2s ease;
        }

        .delete-item-btn:hover {
            background: #c0392b;
            transform: scale(1.1);
        }

        .tabs-container {
            flex: 1;
            display: flex;
            flex-direction: column;
            min-height: 0;
            overflow: hidden;
        }

        .tabs-header {
            display: flex;
            border-bottom: 2px solid #3498db;
            margin-bottom: 15px;
            flex-shrink: 0;
        }

        .tab-btn {
            padding: 10px 20px;
            background: #f8f9fa;
            border: none;
            border-bottom: 2px solid transparent;
            cursor: pointer;
            font-weight: 600;
            color: #666;
            transition: all 0.3s ease;
            font-size: 0.9rem;
        }

        .tab-btn.active {
            background: white;
            color: #3498db;
            border-bottom: 2px solid #3498db;
        }

        .tab-btn:hover {
            background: #e9ecef;
            color: #2980b9;
        }

        .tab-content {
            display: none;
            flex: 1;
            min-height: 0;
            overflow: hidden;
        }

        .tab-content.active {
            display: flex;
            flex-direction: column;
        }

        .facturas-pendientes-container {
            flex: 1;
            display: flex;
            flex-direction: column;
            min-height: 0;
            overflow: hidden;
        }

        .facturas-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
            padding-bottom: 10px;
            border-bottom: 2px solid #3498db;
        }

        .facturas-title {
            font-size: 1.1rem;
            font-weight: bold;
            color: #2c3e50;
        }

        .equipos-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 20px;
            overflow-y: auto;
            flex: 1;
            min-height: 0;
        }

        .equipo-card {
            background: white;
            border: 2px solid #3498db;
            border-radius: 6px;
            padding: 8px;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
            min-height: 60px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 80px;
        }

        .equipo-card:hover {
            transform: translateY(-1px);
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.15);
            border-color: #2980b9;
        }

        .equipo-number {
            font-size: 1rem;
            font-weight: bold;
            color: #2c3e50;
            margin-bottom: 3px;
            line-height: 1;
        }

        .equipo-nombre {
            font-size: 0.7rem;
            color: #e74c3c;
            font-weight: bold;
            margin-bottom: 3px;
            line-height: 1;
            max-width: 100%;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .equipo-total {
            font-size: 0.8rem;
            font-weight: bold;
            color: #27ae60;
            line-height: 1;
        }

        .grupos-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
            margin-top: 15px;
            overflow-y: auto;
            flex: 1;
            min-height: 0;
            padding-right: 5px;
        }

        .grupo-card {
            background: white;
            border: 2px solid #3498db;
            border-radius: 8px;
            padding: 12px;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
            position: relative;
        }

        .grupo-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
            border-color: #2980b9;
        }

        .grupo-header {
            text-align: center;
            margin-bottom: 8px;
            padding-bottom: 6px;
            border-bottom: 1px solid #ddd;
            position: relative;
        }

        .grupo-name {
            font-size: 1rem;
            font-weight: bold;
            color: #2c3e50;
        }

        .grupo-equipos-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 6px;
            margin-bottom: 8px;
        }

        .grupo-equipo-item {
            background: #f8f9fa;
            border: 1px solid #e0e0e0;
            border-radius: 4px;
            padding: 5px;
            text-align: center;
            cursor: pointer;
            transition: all 0.2s ease;
            font-size: 0.75rem;
        }

        .grupo-equipo-item:hover {
            background: #e8f4fd;
            border-color: #3498db;
        }

        .grupo-equipo-number {
            font-size: 0.8rem;
            font-weight: bold;
            color: #2c3e50;
            margin-bottom: 2px;
        }

        .grupo-equipo-total {
            font-size: 0.7rem;
            font-weight: bold;
            color: #27ae60;
        }

        .grupo-total {
            text-align: center;
            font-weight: bold;
            font-size: 0.9rem;
            color: #2c3e50;
            padding: 6px;
            background: #e8f4fd;
            border-radius: 4px;
            border-top: 2px solid #3498db;
            margin-top: 8px;
        }

        .grupo-actions {
            position: absolute;
            top: 8px;
            right: 8px;
            display: flex;
            gap: 4px;
            opacity: 0;
            transition: opacity 0.3s ease;
            z-index: 10;
        }

        .grupo-card:hover .grupo-actions {
            opacity: 1;
        }

        .grupo-action-btn {
            background: rgba(255, 255, 255, 0.9);
            border: 1px solid #ddd;
            border-radius: 4px;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 0.7rem;
        }

        .grupo-action-btn:hover {
            transform: scale(1.1);
        }

        .btn-edit-grupo {
            color: #27ae60;
            border-color: #27ae60;
        }

        .btn-edit-grupo:hover {
            background: #27ae60;
            color: white;
        }

        .btn-delete-grupo {
            color: #e74c3c;
            border-color: #e74c3c;
        }

        .btn-delete-grupo:hover {
            background: #e74c3c;
            color: white;
        }

        .btn-detalle-grupo {
            color: #3498db;
            border-color: #3498db;
        }

        .btn-detalle-grupo:hover {
            background: #3498db;
            color: white;
        }

        .grupos-management {
            padding: 15px;
        }

        .grupos-actions {
            display: flex;
            gap: 10px;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .grupos-list {
            max-height: 400px;
            overflow-y: auto;
            border: 1px solid #e0e0e0;
            border-radius: 6px;
            padding: 10px;
            background: #f8f9fa;
        }

        .grupo-management-item {
            background: white;
            border: 1px solid #ddd;
            border-radius: 6px;
            padding: 15px;
            margin-bottom: 10px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .grupo-management-info {
            flex: 1;
        }

        .grupo-management-name {
            font-weight: bold;
            font-size: 1rem;
            color: #2c3e50;
            margin-bottom: 5px;
        }

        .grupo-management-details {
            font-size: 0.8rem;
            color: #666;
        }

        .grupo-management-actions {
            display: flex;
            gap: 5px;
        }

        .modal-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 2000;
        }

        .modal-content {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: white;
            padding: 20px;
            border-radius: 8px;
            width: 90%;
            max-width: 800px;
            max-height: 80vh;
            overflow-y: auto;
        }

        .create-grupo-modal {
            max-width: 400px;
        }

        .equipos-selection {
            max-height: 200px;
            overflow-y: auto;
            border: 1px solid #ddd;
            border-radius: 4px;
            padding: 10px;
            margin: 10px 0;
        }

        .equipo-selection-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 6px;
            border-bottom: 1px solid #eee;
            cursor: pointer;
            font-size: 0.85rem;
        }

        .equipo-selection-item:hover {
            background: #f8f9fa;
        }

        .equipo-selection-item.selected {
            background: #3498db;
            color: white;
        }

        .selected-equipos {
            margin: 10px 0;
            padding: 8px;
            background: #e8f4fd;
            border-radius: 4px;
            min-height: 40px;
            font-size: 0.85rem;
        }

        .selected-equipo-badge {
            display: inline-block;
            background: #3498db;
            color: white;
            padding: 3px 6px;
            border-radius: 10px;
            margin: 2px;
            font-size: 0.75rem;
        }

        .empty-state {
            text-align: center;
            color: #7f8c8d;
            padding: 30px 20px;
        }

        .empty-state i {
            font-size: 2.5rem;
            margin-bottom: 10px;
            opacity: 0.5;
        }

        .detalle-equipo {
            background: #f8f9fa;
            padding: 12px;
            border-radius: 6px;
            margin: 8px 0;
            font-size: 0.9rem;
        }

        .factura-item {
            background: white;
            padding: 8px;
            border-radius: 4px;
            margin: 6px 0;
            border-left: 3px solid #3498db;
            font-size: 0.85rem;
        }

        .producto-item {
            display: flex;
            justify-content: space-between;
            padding: 3px 0;
            font-size: 0.8rem;
        }

        .grupo-facturas {
            margin-top: 8px;
        }

        .all-equipos-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
            gap: 8px;
            margin: 10px 0;
            max-height: 200px;
            overflow-y: auto;
            padding: 10px;
            border: 1px solid #e0e0e0;
            border-radius: 4px;
            background: #fafafa;
        }

        .all-equipo-item {
            background: white;
            border: 1px solid #ddd;
            border-radius: 4px;
            padding: 6px;
            text-align: center;
            cursor: pointer;
            transition: all 0.2s ease;
            font-size: 0.8rem;
            width: 80px;
        }

        .all-equipo-item:hover {
            border-color: #3498db;
            background: #f0f8ff;
        }

        .all-equipo-item.selected {
            background: #3498db;
            color: white;
            border-color: #2980b9;
        }

        .edit-grupo-modal {
            max-width: 500px;
        }

        .grupo-detalle-equipo {
            background: #f8f9fa;
            padding: 10px;
            border-radius: 6px;
            margin: 8px 0;
            border-left: 4px solid #3498db;
        }

        .grupo-detalle-factura {
            background: white;
            padding: 8px;
            border-radius: 4px;
            margin: 6px 0;
            border: 1px solid #e0e0e0;
        }

        .grupo-resumen {
            background: #e8f4fd;
            padding: 12px;
            border-radius: 6px;
            margin: 15px 0;
            border-left: 4px solid #2c3e50;
            font-weight: bold;
        }

        .connection-status {
            position: fixed;
            top: 10px;
            left: 10px;
            padding: 8px 12px;
            border-radius: 4px;
            z-index: 10001;
            font-size: 0.7rem;
            font-weight: bold;
            display: none;
        }

        .connection-status.online {
            background-color: #d4edda;
            color: #155724;
            border: 1px solid #c3e6cb;
        }

        .connection-status.offline {
            background-color: #f8d7da;
            color: #721c24;
            border: 1px solid #f5c6cb;
        }

        .price-warning {
            border: 2px solid #e74c3c !important;
            background-color: #fdf2f2 !important;
        }

        .date-warning {
            border: 2px solid #f39c12 !important;
            background-color: #fef9e7 !important;
        }

        .duplicate-warning {
            border: 2px solid #e74c3c !important;
            background-color: #fdf2f2 !important;
            animation: pulse 1.5s infinite;
        }

        @keyframes pulse {
            0% {
                border-color: #e74c3c;
            }

            50% {
                border-color: #ff9999;
            }

            100% {
                border-color: #e74c3c;
            }
        }

        .btn:disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }

        .btn:disabled:hover {
            transform: none;
        }

        .retiro-btn {
            background-color: #9b59b6;
            color: white;
        }

        .retiro-btn:hover {
            background-color: #8e44ad;
        }

        .ingreso-btn {
            background-color: #27ae60;
            color: white;
        }

        .ingreso-btn:hover {
            background-color: #219a52;
        }

        .equipo-en-grupo {
            background: #f8d7da !important;
            border-color: #e74c3c !important;
            color: #721c24 !important;
            cursor: not-allowed !important;
        }

        .equipo-en-grupo:hover {
            transform: none !important;
            box-shadow: none !important;
        }

        /* Modal de confirmación de abono inicial */
        .confirmacion-abono-modal {
            max-width: 400px;
            text-align: center;
        }

        .confirmacion-buttons {
            display: flex;
            gap: 10px;
            margin-top: 20px;
        }

        .confirmacion-buttons button {
            flex: 1;
            padding: 12px;
            font-size: 0.9rem;
            font-weight: bold;
        }

        .loading-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.7);
            z-index: 3000;
            justify-content: center;
            align-items: center;
            color: white;
            font-size: 1.2rem;
        }

        .concurrency-lock {
            pointer-events: none;
            opacity: 0.7;
        }

        @media (max-width: 768px) {
            .desktop-only {
                display: none !important;
            }

            header {
                flex-direction: column;
                gap: 10px;
            }

            header h1 {
                width: 100%;
                text-align: center;
                margin-bottom: 5px;
            }

            .dashboard {
                grid-template-columns: 1fr;
            }

            .venta-header {
                flex-direction: column;
            }

            .venta-line-1,
            .venta-line-2 {
                grid-template-columns: 1fr;
            }
        }

        @media print {

            /* REGLA MAESTRA: Ocultar todo por defecto y resetear cajas */
            * {
                box-shadow: none !important;
                text-shadow: none !important;
            }

            body,
            html {
                margin: 0;
                padding: 0;
                width: 100%;
                height: 100%;
                background: white;
            }

            /* Contenedores principales visibles y reseteados */
            .container,
            .dashboard,
            .dashboard-section,
            .history-container,
            .history-table-container,
            .tab-content {
                width: 100% !important;
                height: auto !important;
                overflow: visible !important;
                display: block !important;
                position: static !important;
                margin: 0 !important;
                padding: 0 !important;
                border: none !important;
                flex: none !important;
                background: white !important;
            }

            /* Ocultar elementos de interfaz no imprimibles */
            header,
            .venta-header,
            .cart-container,
            .tabs-header,
            .filter-buttons,
            .historial-actions,
            .status,
            .loading-overlay,
            #panel-venta-section,
            #panel-derecho,
            .btn,
            .action-buttons,
            .search-container {
                display: none !important;
            }

            /* Asegurar visibilidad del contenido del historial */
            #historial-ventas-section {
                display: block !important;
            }

            /* Estilos específicos para la tabla de historial */
            .history-table {
                width: 100% !important;
                border-collapse: collapse !important;
                table-layout: fixed;
                /* O auto, según preferencia */
            }

            .history-table th {
                background-color: #f0f0f0 !important;
                color: black !important;
                font-weight: bold !important;
                border: 1px solid #999 !important;
                position: static !important;
                /* Quitar sticky header */
            }

            .history-table td {
                color: black !important;
                border: 1px solid #ccc !important;
                word-wrap: break-word;
            }

            .history-table tr {
                page-break-inside: avoid;
            }

            /* Ajustes para badges en blanco y negro/grises */
            .badge,
            .contado-badge,
            .pendiente-badge,
            .abono-badge,
            .retiro-badge,
            .ingreso-badge {
                border: 1px solid #000;
                color: #000 !important;
                background: #fff !important;
                padding: 2px 4px;
            }
        }

        /* ========================================
   SISTEMA DE PESTAÑAS PRINCIPALES
   ======================================== */

        .main-tabs-container {
            background: white;
            border-radius: 8px;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
            border: 1px solid #e0e0e0;
            overflow: hidden;
            min-height: calc(100vh - 150px);
            display: flex;
            flex-direction: column;
        }

        .main-tabs-header {
            display: flex;
            background: linear-gradient(135deg, #2c3e50, #34495e);
            border-bottom: 3px solid #3498db;
            flex-shrink: 0;
        }

        .main-tab-btn {
            flex: 1;
            padding: 15px 20px;
            background: transparent;
            border: none;
            border-right: 1px solid rgba(255, 255, 255, 0.1);
            cursor: pointer;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.7);
            transition: all 0.3s ease;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .main-tab-btn:last-child {
            border-right: none;
        }

        .main-tab-btn:hover {
            background: rgba(255, 255, 255, 0.1);
            color: white;
        }

        .main-tab-btn.active {
            background: white;
            color: #3498db;
            border-bottom: 3px solid #3498db;
            margin-bottom: -3px;
        }

        .main-tab-btn i {
            font-size: 1.1rem;
        }

        .main-tab-content {
            display: none;
            flex: 1;
            padding: 20px;
            overflow-y: auto;
            min-height: 0;
        }

        .main-tab-content.active {
            display: flex;
            flex-direction: column;
        }

        /* Panel de Venta dentro de Tab */
        .venta-panel {
            display: flex;
            flex-direction: column;
            height: 100%;
            max-width: 900px;
            margin: 0 auto;
            width: 100%;
        }

        /* Ajustes para Facturas y Grupos en pestañas separadas */
        #main-tab-facturas .equipos-grid {
            padding: 10px;
        }

        #main-tab-grupos .grupos-container {
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            padding: 10px;
        }

        /* Responsive para tabs principales */
        @media (max-width: 768px) {
            .main-tab-btn {
                padding: 12px 10px;
                font-size: 0.8rem;
            }

            .main-tab-btn span {
                display: none;
            }

            .main-tab-btn i {
                font-size: 1.3rem;
            }

            .main-tab-content {
                padding: 10px;
            }

            .venta-panel {
                max-width: 100%;
            }
        }

        /* === ESTILOS DE SCROLL PARA HISTORIAL === */
        /* Tab no activo: debe estar oculto */
        .tab-content {
            display: none;
            flex-direction: column;
            height: 100%;
            overflow: hidden;
        }

        /* Tab activo: visible con flex */
        .tab-content.active {
            display: flex !important;
        }

        #tab-historial .history-container {
            flex: 1;
            display: flex;
            flex-direction: column;
            overflow: hidden;
            min-height: 0;
        }

        #tab-historial .history-table-container {
            flex: 1;
            overflow-y: auto;
            overflow-x: hidden;
            /* Sin scroll horizontal */
            min-height: 0;
            max-height: calc(100vh - 400px);
        }

        /* Tabla del historial ocupa todo el ancho sin exceder */
        #tab-historial .history-table {
            width: 100%;
            table-layout: fixed;
            min-width: 0;
            /* No forzar ancho mínimo */
        }

        #tab-historial .history-table th:nth-child(1),
        #tab-historial .history-table td:nth-child(1) {
            width: 15%;
            /* Factura */
        }

        #tab-historial .history-table th:nth-child(2),
        #tab-historial .history-table td:nth-child(2) {
            width: 12%;
            /* Equipo */
        }

        #tab-historial .history-table th:nth-child(3),
        #tab-historial .history-table td:nth-child(3) {
            width: 12%;
            /* Total */
        }

        #tab-historial .history-table th:nth-child(4),
        #tab-historial .history-table td:nth-child(4) {
            width: 12%;
            /* Estado */
        }

        #tab-historial .history-table th:nth-child(5),
        #tab-historial .history-table td:nth-child(5) {
            width: 10%;
            /* Fecha */
        }

        #tab-historial .history-table th:nth-child(6),
        #tab-historial .history-table td:nth-child(6) {
            width: 12%;
            /* Acciones */
        }

        /* Asegurar que el texto se ajuste en las celdas */
        #tab-historial .history-table td {
            white-space: normal;
            word-wrap: break-word;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* Permitir que la celda de acciones muestre el menú completo */
        #tab-historial .history-table td:nth-child(6) {
            overflow: visible;
            position: relative;
        }

        /* Asegurar que el contenedor de tabs derecho tenga scroll */
        .dashboard-section:last-child {
            display: flex;
            flex-direction: column;
            overflow: hidden;
        }

        .tabs-container {
            flex: 1;
            display: flex;
            flex-direction: column;
            overflow: hidden;
            min-height: 0;
        }
.dashboard.reversed .dashboard-section:first-child { order: 2; }
.dashboard.reversed .dashboard-section:last-child { order: 1; }