:root{--bg: #0f1117;--bg2: #1a1d27;--bg3: #242836;--border: #2e3348;--text: #e4e6ef;--text2: #9ca3af;--primary: #6366f1;--primary-hover: #818cf8;--green: #22c55e;--red: #ef4444;--orange: #f59e0b;--blue: #3b82f6;--purple: #a855f7;--radius: 8px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text)}input,select,textarea,button{font-family:inherit;font-size:inherit}.app-layout{display:flex;min-height:100vh}.sidebar{width:240px;background:var(--bg2);border-right:1px solid var(--border);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100}.sidebar-header{padding:20px;border-bottom:1px solid var(--border)}.sidebar-header h2{font-size:16px;color:var(--primary)}.sidebar-nav{flex:1;padding:8px;overflow-y:auto}.nav-item{display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:var(--radius);color:var(--text2);text-decoration:none;transition:all .15s;margin-bottom:2px}.nav-item:hover{background:var(--bg3);color:var(--text)}.nav-item.active{background:var(--primary);color:#fff}.nav-icon{font-size:18px}.sidebar-footer{padding:14px;border-top:1px solid var(--border)}.user-info{display:flex;align-items:center;gap:8px;margin-bottom:8px;font-size:13px}.user-badge{width:24px;height:24px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700}.btn-logout{background:none;border:1px solid var(--border);color:var(--text2);padding:6px 12px;border-radius:var(--radius);cursor:pointer;width:100%}.btn-logout:hover{border-color:var(--red);color:var(--red)}.main-area{flex:1;margin-left:240px}.topbar{padding:14px 24px;border-bottom:1px solid var(--border);background:var(--bg2);display:flex;align-items:center;gap:12px}.menu-toggle{display:none;background:none;border:none;color:var(--text);font-size:22px;cursor:pointer}.page-title{font-size:16px;font-weight:600}.content{padding:24px;max-width:1400px}.sidebar-overlay{display:none}@media (max-width: 768px){.sidebar{transform:translate(-100%);transition:transform .2s}.sidebar.open{transform:translate(0)}.sidebar-overlay{display:block;position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;z-index:99}.main-area{margin-left:0}.menu-toggle{display:block}.content{padding:16px}}.cards-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}.card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:18px}.card-label{font-size:12px;color:var(--text2);text-transform:uppercase;letter-spacing:.5px;margin-bottom:6px}.card-value{font-size:28px;font-weight:700}.card-sub{font-size:12px;color:var(--text2);margin-top:4px}.table-wrap{overflow-x:auto;background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius)}table{width:100%;border-collapse:collapse}th,td{padding:10px 14px;text-align:left;border-bottom:1px solid var(--border);font-size:13px}th{background:var(--bg3);color:var(--text2);font-weight:600;text-transform:uppercase;font-size:11px;letter-spacing:.5px;position:sticky;top:0}tr:hover{background:var(--bg3)}tr:last-child td{border-bottom:none}.badge{display:inline-block;padding:2px 8px;border-radius:10px;font-size:11px;font-weight:600}.badge-green{background:#16532d;color:#86efac}.badge-red{background:#5c1a1a;color:#fca5a5}.badge-orange{background:#5c3a0a;color:#fcd34d}.badge-blue{background:#1a365d;color:#93c5fd}.badge-purple{background:#3b1a5c;color:#d8b4fe}.badge-gray{background:#374151;color:#9ca3af}.form-group{margin-bottom:14px}.form-group label{display:block;font-size:12px;color:var(--text2);margin-bottom:4px;font-weight:600}input,select,textarea{width:100%;padding:9px 12px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);outline:none}input:focus,select:focus,textarea:focus{border-color:var(--primary)}input[type=number]{-moz-appearance:textfield}input::-webkit-outer-spin-button,input::-webkit-inner-spin-button{-webkit-appearance:none}.btn{padding:9px 18px;border-radius:var(--radius);border:none;cursor:pointer;font-weight:600;font-size:13px;transition:all .15s;display:inline-flex;align-items:center;gap:6px}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-green{background:var(--green);color:#fff}.btn-green:hover{opacity:.9}.btn-red{background:var(--red);color:#fff}.btn-red:hover{opacity:.9}.btn-outline{background:none;border:1px solid var(--border);color:var(--text2)}.btn-outline:hover{border-color:var(--text);color:var(--text)}.btn-sm{padding:5px 10px;font-size:12px}.btn-lg{padding:14px 28px;font-size:16px}.btn:disabled{opacity:.5;cursor:not-allowed}.toolbar{display:flex;gap:10px;align-items:center;margin-bottom:16px;flex-wrap:wrap}.toolbar input,.toolbar select{width:auto;min-width:180px}.spacer{flex:1}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:200}.modal{background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:24px;width:90%;max-width:500px;max-height:90vh;overflow-y:auto}.modal h3{margin-bottom:16px}.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:18px}.pos-layout{display:grid;grid-template-columns:1fr 380px;gap:20px;height:calc(100vh - 130px)}.pos-products{overflow-y:auto}.pos-cart{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);display:flex;flex-direction:column}.pos-cart-header{padding:14px;border-bottom:1px solid var(--border);font-weight:700}.pos-cart-items{flex:1;overflow-y:auto;padding:10px}.pos-cart-item{display:flex;gap:8px;align-items:center;padding:8px;border-bottom:1px solid var(--border)}.pos-cart-item .item-info{flex:1}.pos-cart-item .item-name{font-size:13px;font-weight:600}.pos-cart-item .item-detail{font-size:11px;color:var(--text2)}.pos-cart-item .item-price{font-weight:700;color:var(--green)}.pos-cart-item input{width:80px;text-align:center}.pos-cart-footer{padding:14px;border-top:1px solid var(--border)}.pos-total{font-size:28px;font-weight:700;margin-bottom:10px}.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}.product-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:14px;cursor:pointer;transition:all .15s;text-align:center}.product-card:hover{border-color:var(--primary);transform:translateY(-1px)}.product-card .p-name{font-weight:600;font-size:14px;margin-bottom:4px}.product-card .p-price{color:var(--green);font-size:13px}.product-card .p-stock{color:var(--text2);font-size:11px;margin-top:4px}@media (max-width: 900px){.pos-layout{grid-template-columns:1fr;height:auto}}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg)}.login-box{background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:40px;width:360px}.login-box h1{text-align:center;margin-bottom:8px}.login-box p{text-align:center;color:var(--text2);font-size:13px;margin-bottom:24px}.login-error{background:#5c1a1a;color:#fca5a5;padding:8px 12px;border-radius:var(--radius);font-size:13px;margin-bottom:14px}.loading{display:flex;align-items:center;justify-content:center;min-height:200px;color:var(--text2)}.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.section-header h2{font-size:20px}.stock-low{color:var(--red);font-weight:700}.stock-ok{color:var(--green)}.stock-warn{color:var(--orange)}.tabs{display:flex;gap:4px;margin-bottom:20px;border-bottom:1px solid var(--border)}.tab{padding:10px 18px;background:none;border:none;color:var(--text2);cursor:pointer;border-bottom:2px solid transparent;font-weight:600}.tab.active{color:var(--primary);border-bottom-color:var(--primary)}.tab:hover{color:var(--text)}.empty{text-align:center;padding:40px;color:var(--text2)}.empty-icon{font-size:40px;margin-bottom:10px}