#app{min-height:100vh;overflow:auto;overscroll-behavior:auto;position:relative}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background-color:#f5f5f5;color:#333;overflow-x:hidden}Contenedor principal .app-container{min-height:100vh;display:flex;flex-direction:column}.navbar{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:1rem 2rem;box-shadow:0 2px 10px #0000001a}.navbar-brand{font-size:1.4rem;font-weight:700}.tpv-container{display:grid;grid-template-columns:1fr 400px;height:calc(100vh - 80px);gap:1rem;padding:1rem}.productos-area{background:#fff;border-radius:12px;box-shadow:0 4px 20px #00000014;overflow:hidden}.categorias-nav{display:flex;background:#f8f9fa;border-bottom:2px solid #e9ecef;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}.categorias-nav::-webkit-scrollbar{display:none}.categoria-btn{flex:0 0 auto;padding:1rem 1.5rem;background:transparent;border:none;font-weight:600;color:#6c757d;cursor:pointer;transition:all .3s ease;border-bottom:3px solid transparent;white-space:nowrap}.categoria-btn:hover{background:#e9ecef;color:#495057}.categoria-btn.active{color:#667eea;border-bottom-color:#667eea;background:#fff}.producto-card{background:#fff;border:2px solid #e9ecef;border-radius:12px;padding:1rem;cursor:pointer;transition:all .3s ease;text-align:center;position:relative;-webkit-user-select:none;user-select:none;touch-action:manipulation}.producto-card:hover{border-color:#667eea;transform:translateY(-2px);box-shadow:0 8px 25px #667eea26}.producto-card:active{transform:translateY(0);box-shadow:0 4px 15px #667eea33}.producto-imagen{width:80px;height:80px;object-fit:cover;border-radius:8px;margin:0 auto .5rem;background:#f8f9fa;border:1px solid #e9ecef;display:flex;align-items:center;justify-content:center;color:#6c757d;font-size:.8rem}.producto-nombre{font-weight:600;font-size:.9rem;margin-bottom:.25rem;line-height:1.2;height:2.4em;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical}.producto-precio{font-size:1rem;font-weight:700;color:#28a745}.producto-oferta{position:absolute;top:.5rem;right:.5rem;background:#dc3545;color:#fff;padding:.2rem .5rem;border-radius:12px;font-size:.7rem;font-weight:700}.cuenta-area{background:#fff;border-radius:12px;box-shadow:0 4px 20px #00000014;display:flex;flex-direction:column}.cuenta-header{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:1rem;border-radius:12px 12px 0 0;text-align:center}.cuenta-items{flex:1;overflow-y:auto;max-height:400px}.cuenta-item{display:flex;align-items:center;padding:.75rem;border-bottom:1px solid #e9ecef;gap:.5rem}.cuenta-item:last-child{border-bottom:none}.item-cantidad{background:#667eea;color:#fff;border-radius:50%;width:24px;height:24px;display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:700;flex-shrink:0}.item-info{flex:1;min-width:0}.item-nombre{font-weight:600;font-size:.9rem;line-height:1.2;margin-bottom:.2rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.item-precio{color:#6c757d;font-size:.8rem}.item-subtotal{font-weight:700;color:#28a745;flex-shrink:0}.item-actions{display:flex;gap:.25rem;flex-shrink:0}.btn-cantidad{width:28px;height:28px;border:1px solid #dee2e6;background:#fff;border-radius:6px;cursor:pointer;display:flex;align-items:center;justify-content:center;font-weight:700;transition:all .2s}.btn-cantidad:hover{background:#f8f9fa;border-color:#667eea}.btn-cantidad:active{background:#e9ecef}.cuenta-summary{padding:1rem;background:#f8f9fa;border-top:2px solid #e9ecef}.total-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.total-label{font-size:1.1rem;font-weight:600}.total-amount{font-size:1.3rem;font-weight:700;color:#28a745}.action-buttons{display:grid;grid-template-columns:1fr 1fr;gap:.5rem;margin-top:1rem}.btn{padding:.75rem 1rem;border:none;border-radius:8px;font-weight:600;cursor:pointer;transition:all .3s ease;touch-action:manipulation}.btn-primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 15px #667eea4d}.btn-secondary{background:#6c757d;color:#fff}.btn-secondary:hover{background:#5a6268}.btn-success{background:linear-gradient(135deg,#28a745,#20c997);color:#fff;grid-column:1 / -1;padding:1rem;font-size:1rem}.btn-success:hover{transform:translateY(-1px);box-shadow:0 4px 15px #28a7454d}.btn:disabled{opacity:.6;cursor:not-allowed;transform:none!important;box-shadow:none!important}@media(max-width:1200px){.tpv-container{grid-template-columns:1fr 350px}}@media(max-width:768px){.tpv-container{grid-template-columns:1fr;grid-template-rows:1fr auto;height:calc(100vh - 60px)}.cuenta-area{max-height:300px}.navbar{padding:.75rem 1rem}}@keyframes slideIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.cuenta-item{animation:slideIn .3s ease}.loading{display:flex;justify-content:center;align-items:center;height:200px;color:#6c757d}.spinner{border:3px solid #f3f3f3;border-top:3px solid #667eea;border-radius:50%;width:40px;height:40px;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}input,textarea,select{font-size:.9rem!important;padding:.6rem .8rem!important;border:1px solid #ddd;border-radius:6px;transition:border-color .2s ease}input:focus,textarea:focus,select:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 2px #667eea1a}.form-group input,.form-group textarea,.form-group select{font-size:.9rem;padding:.6rem .8rem;width:100%}.form-group label{font-size:.9rem;font-weight:600;margin-bottom:.4rem;display:block;color:#495057}.btn{font-size:.9rem}h1{font-size:1.4rem}h2{font-size:1.2rem}h3{font-size:1rem}input[type=number]{text-align:right}input[type=checkbox],input[type=radio]{width:auto!important;height:auto!important;padding:0!important;margin-right:.5rem}