:root{--bg:#f5f7fb;--card:#fff;--text:#1e293b;--muted:#64748b;--line:#e2e8f0;--accent:#0f766e;--accent2:#115e59;--danger:#b91c1c;--success:#15803d;--shadow:0 8px 26px rgba(15,23,42,.07)}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}a{color:inherit;text-decoration:none}h1{margin:0 0 18px;font-size:clamp(1.55rem,2vw,2rem)}h2{margin:0 0 12px}.muted,small{color:var(--muted)}small{display:block;margin-top:4px}.topbar{height:60px;background:#0f172a;color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 22px;position:sticky;top:0;z-index:20}.brand{font-weight:800;font-size:1.15rem;display:flex;align-items:center;gap:9px}.top-logo{width:34px;height:34px;object-fit:contain;border-radius:7px;background:#fff}.topuser{font-size:.9rem;color:#cbd5e1}.shell{display:grid;grid-template-columns:220px minmax(0,1fr);min-height:calc(100vh - 60px)}.sidebar{background:#111827;padding:16px 12px;display:flex;flex-direction:column;gap:6px}.sidebar a{color:#e5e7eb;padding:11px 12px;border-radius:10px;font-size:.94rem}.sidebar a:hover{background:#1f2937}.sidebar .primary-nav{background:var(--accent);color:#fff;font-weight:750}.content{padding:24px;min-width:0}.card{background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:18px;margin-bottom:20px}.page-head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:16px}.page-head h1{margin-bottom:4px}.btn{border:0;border-radius:10px;background:var(--accent);color:#fff;padding:10px 16px;font-weight:750;cursor:pointer;display:inline-flex;align-items:center;justify-content:center}.btn:hover{background:var(--accent2)}.btn.secondary{background:#e2e8f0;color:#334155}.btn.danger{background:var(--danger)}.btn-lg{width:100%;padding:13px}.btn-xl{width:100%;padding:16px;font-size:1.15rem}.alert{padding:12px 15px;border-radius:10px;margin-bottom:16px}.alert.success{background:#dcfce7;color:#166534}.alert.error{background:#fee2e2;color:#991b1b}.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:20px}.stat{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:var(--shadow)}.stat span{display:block;color:var(--muted);font-size:.88rem}.stat strong{display:block;font-size:1.7rem;margin-top:8px}.table-wrap{overflow:auto}.table-wrap.card{padding:0}table{width:100%;border-collapse:collapse;min-width:680px}th,td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}th{background:#f8fafc;color:#475569;font-size:.82rem;text-transform:uppercase;letter-spacing:.03em}td small{font-size:.76rem}.link,.link-button{color:var(--accent);font-weight:700}.link-button{border:0;background:none;cursor:pointer;padding:0}.danger-text{color:var(--danger);font-weight:800}.success-text{color:var(--success);font-weight:800}.toolbar{display:flex;gap:8px;margin-bottom:14px}.toolbar input{max-width:420px}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.form-grid label,.inline-form label,.pos-products label,.pos-cart label,.login-card label{display:flex;flex-direction:column;gap:6px;font-weight:650;font-size:.9rem}.span-2{grid-column:span 2}.check{flex-direction:row!important;align-items:center;gap:8px!important}.check input{width:auto}input,select,textarea{width:100%;border:1px solid #cbd5e1;border-radius:10px;padding:10px 11px;background:#fff;color:#0f172a;font:inherit;outline:none}input:focus,select:focus{border-color:#0f766e;box-shadow:0 0 0 3px rgba(15,118,110,.12)}.actions{display:flex;gap:10px;align-items:center}.inline-form{display:flex;align-items:end;gap:12px;flex-wrap:wrap}.inline-form label{min-width:220px}.pagination{display:flex;gap:6px;justify-content:center;margin-top:16px}.pagination a{padding:8px 11px;border:1px solid var(--line);border-radius:8px;background:#fff}.pagination a.active{background:var(--accent);color:#fff}.tabs{display:flex;gap:7px;flex-wrap:wrap}.tabs a{background:#fff;border:1px solid var(--line);padding:8px 10px;border-radius:8px}.login-bg{min-height:100vh;display:grid;place-items:center;padding:20px;background:linear-gradient(135deg,#0f172a,#134e4a)}.login-card{width:min(420px,100%);background:#fff;padding:28px;border-radius:20px;box-shadow:0 24px 60px rgba(0,0,0,.3)}.login-card h1{margin-bottom:4px}.login-card label{margin:14px 0}.center-card{width:min(520px,calc(100% - 32px));margin:12vh auto;background:#fff;padding:30px;border-radius:18px;box-shadow:var(--shadow)}.search-results{display:none;position:relative;border:1px solid var(--line);border-radius:10px;background:#fff;max-height:260px;overflow:auto;z-index:10}.search-results.open{display:block}.search-item{width:100%;border:0;border-bottom:1px solid var(--line);background:#fff;text-align:left;padding:11px;cursor:pointer}.search-item:hover{background:#f1f5f9}.search-item span{display:block;color:var(--muted);font-size:.82rem;margin-top:3px}.logo-preview{max-height:80px;max-width:180px;object-fit:contain;margin-top:8px}.pos-grid{display:grid;grid-template-columns:minmax(300px,.9fr) minmax(560px,1.4fr);gap:18px;align-items:start}.touch-input{font-size:1.05rem;padding:14px}.pos-results{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:12px;max-height:62vh;overflow:auto}.product-tile{min-height:105px;border:1px solid var(--line);background:#fff;border-radius:13px;padding:13px;text-align:left;cursor:pointer;display:flex;flex-direction:column;justify-content:center;gap:4px}.product-tile:hover{border-color:#0f766e;background:#f0fdfa}.product-tile:disabled{opacity:.45;cursor:not-allowed}.product-tile strong{font-size:1rem}.product-tile span{font-size:1.12rem;color:var(--accent);font-weight:800}.empty{color:var(--muted);padding:14px}.cart-head{display:flex;justify-content:space-between;align-items:center}.cart-head h2{margin:0}.cart-table{min-width:700px}.mini{min-width:86px;padding:8px}.icon-btn{border:0;background:#fee2e2;color:#991b1b;border-radius:8px;font-size:1.2rem;cursor:pointer;width:34px;height:34px}.totals{border-top:2px solid var(--line);margin-top:12px;padding-top:10px}.totals>div,.summary-card>div{display:flex;justify-content:space-between;padding:6px 2px}.totals .grand,.summary-card .grand{font-size:1.3rem;border-top:1px solid var(--line);margin-top:4px;padding-top:11px}.change-box{font-size:1.15rem;background:#ecfeff;border:1px solid #a5f3fc;border-radius:10px;padding:12px;margin:10px 0 12px}.summary-card{margin-left:auto;width:min(420px,100%);background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;box-shadow:var(--shadow)}
@media(max-width:1050px){.pos-grid{grid-template-columns:1fr}.pos-products{position:static}.stats{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){.topbar{padding:0 14px}.topuser{display:none}.shell{display:block}.sidebar{position:sticky;top:60px;z-index:15;flex-direction:row;overflow:auto;padding:8px;background:#111827}.sidebar a{white-space:nowrap;padding:9px 11px}.content{padding:14px}.form-grid{grid-template-columns:1fr}.span-2{grid-column:span 1}.stats{grid-template-columns:1fr 1fr}.page-head{flex-direction:column}.pos-results{grid-template-columns:1fr 1fr}.card{padding:14px;border-radius:13px}.pos-cart .table-wrap{margin:0 -14px;padding:0 14px}.btn{min-height:42px}}
@media(max-width:480px){.stats{grid-template-columns:1fr}.pos-results{grid-template-columns:1fr}.content{padding:10px}.toolbar{flex-direction:column}.toolbar input{max-width:none}}
.logout-form{margin:0}.logout-form button{width:100%;border:0;background:transparent;color:#e5e7eb;padding:11px 12px;border-radius:10px;font:inherit;text-align:left;cursor:pointer}.logout-form button:hover{background:#1f2937}.status{display:inline-block;padding:4px 8px;border-radius:999px;font-size:.78rem;font-weight:800}.status.ok{background:#dcfce7;color:#166534}.status.void{background:#fee2e2;color:#991b1b}.void-form{margin-top:20px;display:flex;gap:12px;align-items:end}.void-form label{flex:1;display:flex;flex-direction:column;gap:6px;font-weight:650}@media(max-width:760px){.void-form{flex-direction:column;align-items:stretch}.logout-form{min-width:max-content}.logout-form button{white-space:nowrap;padding:9px 11px}}

/* v2.2 roles/import */
.roles-layout{display:grid;grid-template-columns:minmax(340px,1fr) minmax(420px,1.2fr);gap:18px;align-items:start}.permission-groups{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:16px 0}.permission-groups fieldset{border:1px solid #d9dee7;border-radius:10px;padding:12px}.permission-groups legend{font-weight:700;padding:0 6px}.permission-item{align-items:flex-start;margin:8px 0}.permission-item small{display:block;margin-left:6px;color:#6b7280}.template-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:14px 0}.btn.small{padding:7px 10px;font-size:.9rem}.inline-form{display:inline}.row-actions{white-space:nowrap}.import-guide{margin-bottom:18px}.error-list{margin:0;padding-left:22px}.error-list li{margin:6px 0}.alert.info{background:#eef6ff;border:1px solid #c7defa;color:#1e4d7a}.alert.compact{padding:10px 12px;margin:12px 0}
@media(max-width:900px){.roles-layout{grid-template-columns:1fr}.permission-groups{grid-template-columns:1fr}}

/* v2.3 reports */
.report-tabs{margin-bottom:16px}.report-tabs a.active{background:var(--accent);color:#fff;border-color:var(--accent)}.report-stats{grid-template-columns:repeat(3,minmax(0,1fr))}.report-filter{display:grid;grid-template-columns:2fr 1.3fr 1.2fr auto;gap:12px;align-items:end}.report-filter label{display:flex;flex-direction:column;gap:6px;font-weight:650;font-size:.9rem}.warning-text{color:#b45309;font-weight:800}
@media(max-width:900px){.report-filter{grid-template-columns:1fr 1fr}.report-stats{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:600px){.report-filter,.report-stats{grid-template-columns:1fr}}
@media print{.topbar,.sidebar,.no-print{display:none!important}.shell{display:block}.content{padding:0}.card,.stat{box-shadow:none}.report-tabs{display:none}body{background:#fff}.table-wrap{overflow:visible}table{min-width:0;font-size:11px}th,td{padding:6px 7px}.stats{break-inside:avoid}.card{break-inside:auto}}

/* v2.4 tablet / responsive UI only */
html,body{max-width:100%;overflow-x:hidden}.topbar-left{display:flex;align-items:center;gap:10px;min-width:0}.menu-toggle{display:none;width:44px;height:44px;border:0;border-radius:10px;background:#1e293b;color:#fff;font-size:1.35rem;align-items:center;justify-content:center;cursor:pointer;flex:0 0 auto}.menu-toggle:hover{background:#334155}.nav-overlay{display:none}.sidebar{overflow-y:auto}.content{width:100%;max-width:100%}.pos-grid{grid-template-columns:minmax(280px,.78fr) minmax(0,1.5fr)}.pos-cart{min-width:0}.pos-cart .table-wrap{max-width:100%}.cart-table{width:100%}

@media(max-width:1100px){
  .menu-toggle{display:inline-flex}.topbar{padding-left:12px;padding-right:16px}.shell{display:block;min-height:calc(100vh - 60px)}
  .sidebar{position:fixed;top:60px;left:0;bottom:0;width:min(300px,86vw);z-index:45;transform:translateX(-105%);transition:transform .2s ease;box-shadow:12px 0 30px rgba(15,23,42,.25);padding:16px 12px;flex-direction:column;overflow-y:auto;overscroll-behavior:contain}
  .sidebar a{white-space:normal;min-height:44px;display:flex;align-items:center}.logout-form button{min-height:44px;white-space:normal}
  body.menu-open .sidebar{transform:translateX(0)}body.menu-open{overflow:hidden}.nav-overlay{display:block;position:fixed;inset:60px 0 0 0;background:rgba(15,23,42,.48);z-index:40;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,visibility .2s ease}body.menu-open .nav-overlay{opacity:1;visibility:visible;pointer-events:auto}
  .content{padding:18px}.topuser{max-width:44vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
}

@media(min-width:921px) and (max-width:1100px){
  .pos-grid{grid-template-columns:minmax(260px,.72fr) minmax(0,1.45fr);gap:14px}.pos-results{grid-template-columns:1fr}.card{padding:16px}.cart-table{min-width:620px}.mini{min-width:72px;width:100%}th,td{padding:10px 9px}
}

@media(max-width:920px){
  .pos-grid{grid-template-columns:1fr}.pos-products,.pos-cart{width:100%}.pos-results{grid-template-columns:repeat(2,minmax(0,1fr));max-height:44vh}.cart-table{min-width:660px}.content{padding:14px}.card{margin-bottom:14px}.touch-input{min-height:48px}
}

@media(max-width:720px){
  .topbar{height:56px}.sidebar{top:56px}.nav-overlay{inset:56px 0 0}.shell{min-height:calc(100vh - 56px)}.brand{font-size:1rem}.top-logo{width:30px;height:30px}.topuser{display:none}.content{padding:10px}.card{padding:12px;border-radius:12px}.pos-results{grid-template-columns:1fr 1fr;max-height:38vh}.product-tile{min-height:92px;padding:11px}.cart-head{gap:8px}.cart-head h2{font-size:1.25rem}
  .pos-cart .table-wrap{overflow:visible;margin:0}.cart-table{min-width:0}.cart-table thead{display:none}.cart-table,.cart-table tbody,.cart-table tr,.cart-table td{display:block;width:100%}.cart-table tr{border:1px solid var(--line);border-radius:12px;padding:10px;margin:10px 0;background:#fff}.cart-table td{border:0;padding:6px 0;display:grid;grid-template-columns:88px minmax(0,1fr);gap:8px;align-items:center}.cart-table td::before{content:attr(data-label);font-size:.75rem;text-transform:uppercase;letter-spacing:.03em;color:var(--muted);font-weight:800}.cart-table td:first-child{display:block;padding-top:2px;padding-bottom:9px;border-bottom:1px solid var(--line);margin-bottom:4px}.cart-table td:first-child::before{display:none}.cart-table .cart-remove{display:flex;justify-content:flex-end;padding-top:4px}.cart-table .cart-remove::before{display:none}.mini{width:100%;min-width:0;min-height:44px}.icon-btn{width:44px;height:44px}.totals{margin-top:8px}.totals>div{padding:7px 2px}.change-box{min-height:48px;display:flex;align-items:center;justify-content:space-between}.btn-xl{min-height:52px}.touch-input{font-size:1rem}
}

@media(max-width:430px){.pos-results{grid-template-columns:1fr}.product-tile{min-height:82px}.content{padding:8px}.card{padding:10px}.cart-table td{grid-template-columns:78px minmax(0,1fr)}}