*{box-sizing:border-box}
body{margin:0;font-family:Tahoma,Arial,sans-serif;background:#f1f5f9;color:#0f172a}
button,input,select,textarea{font:inherit}
button{cursor:pointer;border:0}
.hidden{display:none!important}
.loading-screen{position:fixed;inset:0;background:#0f172a;color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;z-index:100}
.loader{width:38px;height:38px;border:4px solid #334155;border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.login-view{min-height:100vh;display:grid;place-items:center;padding:20px;background:linear-gradient(135deg,#0f172a,#1e293b)}
.login-card{width:min(420px,100%);background:#fff;padding:32px;border-radius:22px;box-shadow:0 20px 60px #0005}
.brand-mark{font-size:42px}
.login-card h1{margin:10px 0 5px}
.login-card p{color:#64748b;margin:0 0 25px}
.login-card label,.field label,.filter-field label{display:block;font-size:12px;font-weight:700;margin:12px 0 6px}
.login-card input,.field input,.field select,.field textarea,.toolbar input,.toolbar select,.filter-field input,.filter-field select{width:100%;border:1px solid #cbd5e1;border-radius:10px;padding:11px 12px;outline:0;background:#fff}
.login-card input:focus,.field input:focus,.field select:focus,.field textarea:focus,.toolbar input:focus,.sale-search input:focus,.filter-field input:focus,.filter-field select:focus{border-color:#2563eb;box-shadow:0 0 0 3px #2563eb18}
.primary{background:#2563eb;color:#fff;border-radius:10px;padding:11px 16px;font-weight:700}
.primary:hover{background:#1d4ed8}
.secondary{background:#e2e8f0;color:#0f172a;border-radius:10px;padding:10px 15px;font-weight:700}
.secondary:hover{background:#cbd5e1}
.ghost{background:#e2e8f0;color:#0f172a;padding:9px 14px;border-radius:9px}
.ghost:hover{background:#cbd5e1}
.full{width:100%;margin-top:18px}
.form-error{color:#dc2626;font-size:12px;min-height:18px;margin-top:8px}
.topbar{height:68px;background:#0f172a;color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 22px}
.brand{display:flex;align-items:center;gap:10px}
.brand-icon{width:40px;height:40px;background:#2563eb;border-radius:10px;display:grid;place-items:center}
.brand small{display:block;color:#94a3b8;font-size:10px;margin-top:3px}
.top-actions{display:flex;align-items:center;gap:12px}
.employee{color:#cbd5e1;font-size:13px}
.layout{display:flex;min-height:calc(100vh - 68px)}
.sidebar{width:235px;background:#fff;border-left:1px solid #e2e8f0;padding:14px;display:flex;flex-direction:column;gap:4px}
.nav{text-align:right;background:transparent;color:#475569;padding:11px;border-radius:9px;font-weight:700}
.nav:hover{background:#f1f5f9}
.nav.active{background:#dbeafe;color:#1d4ed8}
.content{flex:1;min-width:0;padding:20px;max-width:1500px}
.page-head{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:18px}
.page-head h2{margin:0 0 4px}
.page-head p{margin:0;color:#64748b;font-size:13px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:16px}
.stat,.panel{background:#fff;border:1px solid #e2e8f0;border-radius:15px}
.stat{padding:15px}
.stat span{display:block;color:#64748b;font-size:12px}
.stat strong{display:block;font-size:23px;margin:10px 0 4px}
.stat small{color:#94a3b8;font-size:11px}
.dashboard-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:16px}
.panel{padding:17px}
.panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;gap:10px}
.panel h3{margin:0}
.link-btn{background:none;color:#2563eb;font-size:12px}
.quick-actions{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.quick-actions button{background:#f8fafc;padding:15px;border-radius:10px;text-align:right;font-weight:700}
.quick-actions button:hover{background:#f1f5f9}
.toolbar{display:grid;grid-template-columns:1fr 190px 90px;gap:9px;margin-bottom:14px}
.table-wrap{background:#fff;border:1px solid #e2e8f0;border-radius:14px;overflow:auto}
table{width:100%;border-collapse:collapse;min-width:900px}
th,td{text-align:right;padding:12px;border-bottom:1px solid #e2e8f0;font-size:12px;white-space:nowrap}
th{background:#f8fafc;color:#475569}
td strong{font-size:13px}
.badge{display:inline-block;padding:5px 8px;border-radius:20px;background:#e0f2fe;color:#0369a1;font-size:11px}
.badge-off{background:#fee2e2;color:#b91c1c}
.stock-ok{color:#047857;font-weight:700}
.stock-low{color:#dc2626;font-weight:800}
.row-actions{display:flex;gap:6px}
.edit-btn{background:#dbeafe;color:#1d4ed8;border-radius:7px;padding:6px 9px}
.delete-btn{background:#fee2e2;color:#b91c1c;border-radius:7px;padding:6px 9px}
.edit-btn:hover{background:#bfdbfe}
.delete-btn:hover{background:#fecaca}
.low-row{display:flex;justify-content:space-between;align-items:center;padding:11px 0;border-bottom:1px solid #f1f5f9}
.low-row:last-child{border-bottom:0}
.low-row strong{font-size:13px}
.low-row small{display:block;color:#64748b;margin-top:3px}
.low-stock{color:#dc2626;font-weight:800}
.empty{text-align:center;padding:55px 15px;color:#64748b}
.placeholder{text-align:center;padding:80px 20px;color:#64748b}
.placeholder h3{color:#0f172a}
.modal{position:fixed;inset:0;background:#0f172a99;display:grid;place-items:center;padding:18px;z-index:50}
.modal-card{width:min(720px,100%);max-height:94vh;overflow:auto;background:#fff;border-radius:18px;padding:20px}
.small-modal{width:min(500px,100%)}
.modal-head{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:14px}
.modal-head h2{margin:0 0 4px}
.modal-head p{margin:0;color:#64748b;font-size:12px}
.icon-btn{width:34px;height:34px;background:#f1f5f9;border-radius:8px;font-size:23px}
.icon-btn:hover{background:#e2e8f0}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:4px 12px}
.full-field{grid-column:1/-1}
.modal-actions{display:flex;justify-content:flex-start;gap:8px;border-top:1px solid #e2e8f0;margin-top:15px;padding-top:15px}
.check-field{display:flex;align-items:center;gap:8px;background:#f8fafc;padding:10px;border-radius:9px;margin-top:8px;font-size:12px;font-weight:700}
.check-field input{width:17px;height:17px}

/* DYNAMIC CATEGORIES */
.category-bar{background:#fff;border:1px solid #e2e8f0;border-radius:14px;padding:12px;margin-bottom:12px}
.category-bar-title{font-size:11px;color:#64748b;font-weight:800;margin-bottom:8px}
.category-pills{display:flex;gap:7px;flex-wrap:wrap}
.category-pill{background:#f1f5f9;color:#475569;border-radius:20px;padding:8px 13px;font-size:11px;font-weight:700}
.category-pill:hover{background:#e2e8f0}
.category-pill.active{background:#2563eb;color:#fff}
.filter-panel{background:#fff;border:1px solid #e2e8f0;border-radius:14px;padding:13px;margin-bottom:14px}
.filter-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px 10px}
.filter-field{min-width:0}
.filter-field label{margin-top:0;font-size:10px;color:#64748b}
.filter-field.wide{grid-column:span 2}
.filter-actions{display:flex;align-items:center;justify-content:flex-start;gap:8px;margin-top:10px}
.table-sub{display:block;color:#94a3b8;font-size:10px;margin-top:3px}
.sale-filter-panel{margin-bottom:16px}

/* SALES */
.sale-layout{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(300px,.8fr);gap:16px;align-items:start}
.sale-main{display:flex;flex-direction:column;gap:16px}
.sale-side{display:flex;flex-direction:column;gap:16px;position:sticky;top:15px}
.sale-hint{font-size:11px;color:#94a3b8}
.sale-search{margin-bottom:12px}
.sale-search input{width:100%;padding:14px;border:1px solid #cbd5e1;border-radius:11px;outline:0;font-size:14px;background:#f8fafc}
.sale-products{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;max-height:360px;overflow:auto}
.sale-product{border:1px solid #e2e8f0;background:#fff;border-radius:12px;padding:12px;display:flex;align-items:center;justify-content:space-between;gap:10px;transition:.15s}
.sale-product:hover{border-color:#93c5fd;box-shadow:0 3px 12px #0f172a0a}
.sale-product-info{min-width:0}
.sale-product-name{font-weight:700;font-size:13px;display:block;overflow:hidden;text-overflow:ellipsis}
.sale-product-meta{display:flex;gap:6px;flex-wrap:wrap;margin-top:5px}
.sale-product-meta span{font-size:10px;color:#64748b;background:#f1f5f9;padding:4px 6px;border-radius:6px}
.sale-product-price{display:block;color:#1d4ed8;font-weight:800;font-size:13px;margin-top:7px}
.sale-add-btn{background:#dbeafe;color:#1d4ed8;border-radius:8px;padding:8px 11px;font-weight:800;white-space:nowrap}
.sale-add-btn:hover{background:#bfdbfe}
.sale-no-results{text-align:center;padding:30px;color:#64748b;background:#f8fafc;border-radius:10px;font-size:13px}
.sale-count{font-size:11px;background:#dbeafe;color:#1d4ed8;padding:5px 8px;border-radius:20px;font-weight:700}
.sale-cart{display:flex;flex-direction:column;gap:8px}
.sale-empty{min-height:180px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;color:#94a3b8;background:#f8fafc;border-radius:12px}
.sale-empty strong{color:#475569;font-size:14px}
.sale-empty span{font-size:11px}
.cart-item{display:grid;grid-template-columns:minmax(150px,1fr) 90px 110px 90px 35px;align-items:center;gap:10px;padding:11px;border:1px solid #e2e8f0;border-radius:11px;background:#fff}
.cart-item-info{min-width:0}
.cart-item-name{display:block;font-weight:700;font-size:12px;overflow:hidden;text-overflow:ellipsis}
.cart-item-code{display:block;color:#94a3b8;font-size:10px;margin-top:3px}
.cart-item-imei{margin-top:6px}
.cart-item-imei select{width:100%;border:1px solid #cbd5e1;border-radius:7px;padding:6px;font-size:10px;background:#fff}
.cart-item-price{font-size:12px;font-weight:700}
.cart-item-total{font-size:12px;font-weight:800;color:#1d4ed8}
.cart-qty{display:flex;align-items:center;gap:4px}
.cart-qty button{width:26px;height:26px;border-radius:6px;background:#e2e8f0;font-weight:800}
.cart-qty input{width:35px;text-align:center;border:1px solid #cbd5e1;border-radius:6px;padding:5px}
.cart-remove{width:30px;height:30px;border-radius:7px;background:#fee2e2;color:#b91c1c;font-size:17px}
.sale-fields{display:flex;flex-direction:column;gap:2px}
.sale-fields .field{margin:0}
.sale-fields .field label{margin-top:9px}
.sale-fields .field:first-child label{margin-top:0}
.sale-summary{margin-top:16px;border-top:1px solid #e2e8f0;padding-top:12px;display:flex;flex-direction:column;gap:8px}
.sale-summary>div{display:flex;justify-content:space-between;align-items:center;font-size:12px}
.sale-summary span{color:#64748b}
.sale-summary strong{font-size:13px}
.sale-summary .sale-total{padding:11px 0;border-top:1px dashed #cbd5e1;border-bottom:1px dashed #cbd5e1;margin:3px 0}
.sale-summary .sale-total span{color:#0f172a;font-weight:800}
.sale-summary .sale-total strong{font-size:19px;color:#2563eb}
#saleChange{color:#047857}
#saleRemaining{color:#dc2626}
.sale-save-btn:disabled{opacity:.6;cursor:not-allowed}
#clearSaleBtn{margin-top:8px}
.sales-history{margin-top:16px}
.sale-error{margin-top:8px}

/* RESPONSIVE */
@media(max-width:1300px){
.stats{grid-template-columns:repeat(2,1fr)}
.filter-grid{grid-template-columns:repeat(3,1fr)}
.sale-layout{grid-template-columns:minmax(0,1.4fr) 340px}
}
@media(max-width:1100px){
.sidebar{width:75px;padding:8px}
.nav{font-size:0;text-align:center}
.sale-layout{grid-template-columns:1fr}
.sale-side{position:static;display:grid;grid-template-columns:1fr 1fr}
.filter-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:800px){
.stats{grid-template-columns:1fr 1fr}
.dashboard-grid{grid-template-columns:1fr}
.sale-products{grid-template-columns:1fr}
.sale-side{display:flex}
.cart-item{grid-template-columns:minmax(130px,1fr) 85px 85px 30px}
.cart-item-price{display:none}
.filter-grid{grid-template-columns:1fr 1fr}
.filter-field.wide{grid-column:1/-1}
}
@media(max-width:600px){
.topbar{padding:0 10px}
.employee{display:none}
.content{padding:10px}
.toolbar{grid-template-columns:1fr}
.form-grid{grid-template-columns:1fr}
.full-field{grid-column:auto}
.page-head{align-items:flex-start}
.page-head .primary{padding:9px 11px;font-size:12px}
.sidebar{position:fixed;bottom:0;left:0;right:0;width:auto;height:58px;z-index:20;flex-direction:row;justify-content:space-around;border-top:1px solid #e2e8f0;border-left:0;overflow:auto}
.nav{min-width:60px;padding:7px}
.layout{padding-bottom:58px}
.stats{grid-template-columns:1fr 1fr;gap:8px}
.stat{padding:12px}
.stat strong{font-size:19px}
.sale-layout{display:flex;flex-direction:column}
.sale-main,.sale-side{width:100%}
.sale-side{display:flex}
.panel{padding:13px}
.sale-products{max-height:300px}
.sale-product{padding:10px}
.sale-product-name{font-size:12px}
.sale-add-btn{padding:7px 9px;font-size:11px}
.cart-item{grid-template-columns:minmax(0,1fr) auto auto 30px;gap:7px;padding:9px}
.cart-item-info{grid-column:1/3}
.cart-qty{grid-column:1/2}
.cart-item-total{grid-column:2/3;grid-row:2}
.cart-remove{grid-column:3/4;grid-row:2}
.cart-item-price{display:none}
.filter-grid{grid-template-columns:1fr}
.filter-field.wide{grid-column:auto}
.filter-actions{flex-wrap:wrap}
.category-pills{flex-wrap:nowrap;overflow:auto;padding-bottom:3px}
.category-pill{flex:0 0 auto}
}
@media(max-width:380px){
.stats{grid-template-columns:1fr}
.sale-product{flex-direction:column;align-items:stretch}
.sale-add-btn{width:100%}
}

@media print{
@page{size:A4;margin:10mm}
body{background:#fff}
body>*:not(#appView){display:none!important}
#appView{display:block!important}
.topbar,.sidebar,.content,.no-print{display:none!important}
}