:root{--bg-app:#000;--bg-panel:#0a0a0a;--bg-element:#171717;--bg-hover:#262626;--text-main:#f8fafc;--text-muted:#94a3b8;--border-color:#262626;--border-focus:#ef4444;--accent:#ef4444;--accent-hover:#dc2626;--danger:#ef4444;--success:#10b981;--spacing-xs:4px;--spacing-sm:8px;--spacing-md:12px;--spacing-lg:16px;--spacing-xl:24px;--radius:12px;--shadow-sm:0 4px 6px -1px #0000004d, 0 2px 4px -2px #0000004d;--shadow-md:0 10px 15px -3px #0006, 0 4px 6px -4px #0006;--shadow-lg:0 20px 25px -5px #00000080, 0 8px 10px -6px #00000080}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-app);color:var(--text-main);height:100dvh;font-family:Poppins,system-ui,-apple-system,sans-serif;overflow:hidden}@media (width<=768px){body{overflow:auto}}h1,h2,h3,h4,h5{color:var(--text-main);font-weight:600}.text-danger{color:var(--danger)}.text-success{color:var(--success)}.text-muted{color:var(--text-muted)}button{background-color:var(--bg-element);color:var(--text-main);padding:0 var(--spacing-lg);cursor:pointer;border-radius:var(--radius);align-items:center;gap:var(--spacing-sm);border:1px solid #0000;height:48px;font-family:Poppins,system-ui,-apple-system,sans-serif;font-size:.9rem;transition:all .2s;display:flex}button:hover{box-shadow:var(--shadow-sm);background-color:var(--bg-hover);transform:translateY(-1px)}button.primary{background-color:var(--accent);color:#fff}button.primary:hover{background-color:var(--accent-hover)}button.danger{background-color:var(--danger);color:#fff}button.ghost{border-color:var(--border-color);background:0 0}button.ghost:hover{background:var(--bg-element)}button.icon-btn{flex-shrink:0;justify-content:center;width:40px;height:40px;padding:0}input,select,textarea{background-color:var(--bg-app);color:var(--text-main);border:1px solid var(--border-color);padding:0 var(--spacing-md);border-radius:var(--radius);width:100%;height:48px;font-family:Poppins,system-ui,-apple-system,sans-serif;font-size:.9rem}input:focus,select:focus,textarea:focus{border-color:var(--border-focus);outline:none}label{color:var(--text-muted);margin-bottom:var(--spacing-xs);text-transform:uppercase;letter-spacing:.05em;font-size:.8rem;display:block}.panel{background-color:var(--bg-panel);border:1px solid var(--border-color);padding:var(--spacing-lg);border-radius:var(--radius);box-shadow:var(--shadow-sm);flex-direction:column;display:flex}@media (width<=768px){.panel{padding:var(--spacing-md)}}.flex-stack{display:flex}@media (width<=768px){.flex-stack{flex-direction:column}}.mobile-only{display:none!important}@media (width<=768px){.mobile-only{display:flex!important}.desktop-only{display:none!important}}.flex{display:flex}.flex-col{flex-direction:column;display:flex}.items-center{align-items:center}.items-start{align-items:flex-start}.items-end{align-items:flex-end}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.gap-lg{gap:var(--spacing-lg)}.w-full{width:100%}.h-full{height:100%}.flex-1{flex:1}.grid-2{gap:var(--spacing-md);grid-template-columns:1fr 1fr;display:grid}@media (width<=768px){.grid-2{grid-template-columns:1fr}}.scrollarea{flex:1;overflow-y:auto}.scrollarea::-webkit-scrollbar{width:6px}.scrollarea::-webkit-scrollbar-thumb{background:var(--bg-hover)}table{border-collapse:collapse;width:100%;font-size:.9rem}th{text-align:left;color:var(--text-muted);padding:var(--spacing-sm);border-bottom:1px solid var(--border-color);text-transform:uppercase;font-size:.75rem;font-weight:500}td{padding:var(--spacing-sm);border-bottom:1px solid var(--border-color)}tr:hover td{background-color:#ffffff05}#app-layout{flex-direction:column;width:100vw;height:100vh;display:flex}.top-header{background-color:var(--bg-panel);border-bottom:1px solid var(--border-color);height:60px;padding:0 var(--spacing-lg);align-items:center;gap:var(--spacing-xl);z-index:100;display:flex;position:relative}@media (width<=1024px){.top-header{gap:var(--spacing-md);padding:0 var(--spacing-md)}}.main-content{background-color:var(--bg-app);flex-direction:column;flex:1;display:flex;overflow:hidden}.nav-group{gap:var(--spacing-md);height:100%;display:flex}.nav-item{padding:0 var(--spacing-md);cursor:pointer;justify-content:center;align-items:center;gap:var(--spacing-sm);height:100%;color:var(--text-muted);white-space:nowrap;border-bottom:3px solid #0000;font-size:.9rem;font-weight:500;text-decoration:none;transition:all .2s;display:flex}.nav-item:hover{color:var(--text-main);background-color:#ffffff0d}.nav-item.active{color:var(--text-main);border-bottom-color:var(--accent);text-shadow:0 0 10px #ef44441a;background-color:#ef444408}@media (width<=768px){.nav-group{background-color:var(--bg-panel);padding:var(--spacing-lg);z-index:1000;flex-direction:column;gap:0;height:auto;transition:transform .3s;position:fixed;inset:60px 0 0;transform:translate(-100%)}.nav-group.mobile-menu-open{transform:translate(0)}.nav-item{border-bottom:1px solid var(--border-color);justify-content:flex-start;width:100%;height:60px}.nav-item.active{border-bottom-color:var(--accent);border-left:4px solid var(--accent);padding-left:calc(var(--spacing-md) - 4px)}}.tab-switcher{border-bottom:1px solid var(--border-color);width:100%;display:flex}.tab-item{cursor:pointer;color:var(--text-muted);border-bottom:2px solid #0000;padding:12px 20px;font-size:.9rem;font-weight:500;transition:all .2s}.tab-item:hover{color:var(--text-main)}.tab-item.active{color:var(--accent);border-bottom-color:var(--accent)}.modal-overlay{z-index:1000;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#000000b3;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal-content{background-color:var(--bg-panel);border:1px solid var(--border-color);border-radius:var(--radius);box-shadow:var(--shadow-lg);flex-direction:column;width:90%;max-width:800px;max-height:90vh;display:flex;overflow:hidden}@media (width<=768px){.modal-content{border:none;border-radius:0;width:100%;height:100%;max-height:100dvh}.modal-overlay{padding:0}}.modal-header{padding:var(--spacing-md) var(--spacing-lg);border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;display:flex}.modal-body{padding:var(--spacing-lg);flex:1;overflow-y:auto}.modal-footer{padding:var(--spacing-md) var(--spacing-lg);border-top:1px solid var(--border-color);justify-content:flex-end;gap:var(--spacing-md);display:flex}.pos-layout{flex:1;height:calc(100vh - 60px);display:flex}@media (width<=768px){.pos-layout{flex-direction:column;height:auto;min-height:calc(100dvh - 60px)}}.pos-left{border-right:1px solid var(--border-color);flex-direction:column;flex:2;display:flex}@media (width<=768px){.pos-left{border-right:none;flex:1}}.pos-right{background-color:var(--bg-panel);flex-direction:column;flex:1;display:flex}.products-grid{gap:var(--spacing-md);padding:var(--spacing-md);grid-template-columns:repeat(auto-fill,minmax(260px,1fr));display:grid}@media (width<=768px){.products-grid{gap:var(--spacing-sm);padding:var(--spacing-sm);grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}}.item-card{--card-accent:var(--border-color);background-color:var(--bg-panel);border:1px solid var(--card-accent);padding:var(--spacing-md);cursor:pointer;border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:all .2s}.item-card:hover{border-color:var(--card-accent);box-shadow:var(--shadow-md);transform:translateY(-2px)}.item-card .price{color:var(--accent);margin-top:var(--spacing-sm);font-weight:600}.photo-upload-box{border:1px dashed var(--border-color);padding:var(--spacing-xl);text-align:center;cursor:pointer;color:var(--text-muted);transition:all .1s}.photo-upload-box:hover{border-color:var(--accent);color:var(--text-main);background-color:#ef44440d}.photo-preview{object-fit:cover;border:1px solid var(--border-color);width:100%;height:200px}.inv-container{opacity:0;pointer-events:none;z-index:-1;position:absolute;top:-9999px;left:-9999px}@media print{@page{margin:0;size:A4}body,html{background:#fff;height:auto;overflow:visible}body *{visibility:hidden}.inv-container,.inv-container *{visibility:visible}.inv-container{opacity:1;pointer-events:auto;z-index:auto;color:#000;box-sizing:border-box;background:#fff;width:100%;padding:8mm 10mm;font-family:Poppins,Arial,sans-serif;font-size:11px;line-height:1.45;position:absolute;top:0;left:0}.inv-header{border:1px solid #ccc;align-items:flex-start;margin-bottom:0;padding:10px 14px;display:flex}.inv-logo{flex:none;margin-right:16px}.inv-company{color:#222;flex:1;font-size:11px;line-height:1.55}.inv-company-name{margin-bottom:2px;font-size:13.5px;font-weight:700}.inv-title{color:#333;letter-spacing:2px;flex:none;align-self:flex-end;padding-left:20px;font-size:32px;font-weight:300}.inv-details-grid{border-bottom:1px solid #ccc;border-left:1px solid #ccc;border-right:1px solid #ccc;display:flex}.inv-details-col{flex:1;padding:4px 8px}.inv-details-col-left{border-right:1px solid #ccc}.inv-dl-row{margin-bottom:2px;font-size:10.5px;display:flex}.inv-dl-label{color:#555;flex-shrink:0;width:90px}.inv-dl-label-muted{color:#777}.inv-dl-value{color:#000;flex:1}.inv-dl-value strong{font-weight:600}.inv-bill-to-row{-webkit-print-color-adjust:exact;print-color-adjust:exact;border-bottom:1px solid #ccc;border-left:1px solid #ccc;border-right:1px solid #ccc;padding:5px 12px;font-size:11px;background-color:#e8e8e8!important}.inv-table{border-collapse:collapse;border-top:1px solid #ccc;width:100%;font-size:11px}.inv-thead-empty th{background:#fff;border-bottom:1px solid #ccc;border-left:1px solid #ccc;height:22px;padding:0}.inv-thead-empty th:last-child{border-right:1px solid #ccc}.inv-item-row td{vertical-align:middle;border-bottom:1px solid #e0e0e0;border-left:1px solid #ccc;padding:5px 8px}.inv-item-row td:last-child{border-right:1px solid #ccc}.inv-td-num{text-align:left;color:#444;border-right:1px solid #e8e8e8;width:30px}.inv-td-right{text-align:right;width:100px}.inv-summary-row td{vertical-align:top;padding:0}.inv-td-empty-left{border:none}td.inv-td-summary-block{border-bottom:1px solid #ccc;border-left:1px solid #ccc;border-right:1px solid #ccc;padding:12px 18px}.inv-summary-line{justify-content:space-between;padding:2px 0;font-size:11px;display:flex}.inv-summary-total{border-top:1px solid #ccc;margin-top:3px;padding-top:5px;font-size:13px;font-weight:700}}