:root{--bg:#f4f6f8;--card:#fff;--ink:#1d2733;--muted:#6b7280;--brand:#0b6b3a;--brand2:#0f8a4d;--danger:#b42318;--line:#d9dee5;--warn:#f59e0b}
*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--ink)}
.hidden{display:none!important}.topbar{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;background:#111827;color:#fff}.topbar h1{margin:0;font-size:22px}
button,input,select,textarea{font:inherit}button{border:1px solid var(--line);background:#fff;padding:10px 14px;border-radius:8px;cursor:pointer}button.primary{background:var(--brand);color:#fff;border-color:var(--brand)}button.primary:hover{background:var(--brand2)}button.warning{background:var(--warn);color:#111;border:none}.full{width:100%;margin-top:8px}
.tabs{display:flex;gap:6px;overflow:auto;padding:10px;background:#fff;border-bottom:1px solid var(--line)}.tabs button{white-space:nowrap}.tabs button.active{background:#111827;color:#fff}
main{padding:14px}.tab{display:none}.tab.active{display:block}.grid.two{display:grid;grid-template-columns:1.7fr 1fr;gap:14px}.panel{background:var(--card);padding:14px;border:1px solid var(--line);border-radius:10px}.sticky{position:sticky;top:10px;height:max-content}
.toolbar{display:flex;gap:8px;margin-bottom:12px}.toolbar input{flex:1}.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}.product-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px;cursor:pointer}.product-card:hover{border-color:var(--brand)}.product-card .price{font-size:20px;font-weight:700;color:var(--brand)}.product-card .stock{font-size:12px;color:var(--muted)}
input,select,textarea{width:100%;padding:10px;border:1px solid var(--line);border-radius:7px;background:#fff}.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:9px;margin-bottom:10px}.row{display:flex}.gap{gap:8px}.muted{color:var(--muted)}.small{font-size:12px}
.auth-shell{min-height:100vh;display:grid;place-items:center;padding:20px}.auth-card{width:min(420px,100%);background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px;box-shadow:0 10px 25px rgba(0,0,0,.07)}.auth-card input{margin-bottom:10px}
.cart-row{display:grid;grid-template-columns:1fr 70px 85px 36px;gap:6px;align-items:center;padding:8px 0;border-bottom:1px solid var(--line)}.totals{margin-top:12px}.totals>div{display:flex;justify-content:space-between;align-items:center;margin:8px 0}.totals .grand{font-size:22px}.totals input{width:120px}
.table-wrap{overflow:auto;margin-top:14px}table{width:100%;border-collapse:collapse;background:#fff}th,td{padding:8px;border:1px solid var(--line);text-align:left;white-space:nowrap}th{background:#eef2f6}.danger{color:var(--danger);font-weight:700}
.summary-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:10px;margin:12px 0}.summary-card{background:#fff;border:1px solid var(--line);border-radius:8px;padding:12px}.summary-card strong{display:block;font-size:22px;margin-top:4px}
#toast{position:fixed;right:16px;bottom:16px;z-index:99;max-width:420px}.toast{background:#111827;color:#fff;padding:12px 14px;border-radius:8px;margin-top:8px;box-shadow:0 6px 20px rgba(0,0,0,.2)}.toast.error{background:#991b1b}
@media(max-width:850px){.grid.two{grid-template-columns:1fr}.sticky{position:static}.tabs{padding-bottom:12px}.topbar{align-items:flex-start}}

.toolbar input{min-width:240px}.toolbar select{width:260px;flex:0 0 260px}
.change-row{padding:8px 0;border-top:1px solid var(--line);font-size:18px}.change-row strong{color:var(--brand)}
@media(max-width:650px){.toolbar{flex-direction:column}.toolbar input,.toolbar select{width:100%;min-width:0;flex:auto}}


/* V1.2 low-stock visibility */
.product-card{position:relative}
.stock-badge{display:inline-block;font-size:11px;font-weight:800;border-radius:999px;padding:4px 7px;margin-bottom:7px}
.stock-badge.low{background:#fff3cd;color:#8a5b00;border:1px solid #f0c36d}
.stock-badge.out{background:#fde2e1;color:#9b1c1c;border:1px solid #e7a3a0}
.product-disabled{opacity:.62}
.reorder-yes{display:inline-block;background:#fde2e1;color:#9b1c1c;border:1px solid #e7a3a0;border-radius:999px;padding:3px 8px;font-weight:800}
.reorder-no{color:#166534;font-weight:700}

/* V1.3 stock count */
#tab-stockcount input[readonly]{background:#f3f4f6}
#tab-stockcount .panel h3{margin-top:22px}

/* V1.4 Users / Staff */
.staff-active{font-weight:700}
.staff-inactive{font-weight:700;opacity:.65}
.staff-actions{display:flex;gap:6px;flex-wrap:wrap}
.staff-actions button{padding:7px 9px;font-size:12px}
#createStaffBtn:disabled{opacity:.55;cursor:not-allowed}