:root{
  --ink:#141824; --ink2:#3a4356; --line:#e3e7ef; --bg:#f4f6fb;
  --brand:#6d28d9; --brand2:#22d3ee; --accent:#f43f5e;
  --ok:#059669; --warn:#d97706; --danger:#dc2626; --low:#e11d48;
  --card:#fff; --radius:14px; --shadow:0 2px 14px rgba(20,24,36,.06);
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Inter,sans-serif;background:var(--bg);color:var(--ink);}
h2{font-size:22px;margin:4px 0 14px}
h3{font-size:15px;margin:0 0 10px}
a{color:inherit;text-decoration:none}
.mono{font-family:ui-monospace,Menlo,monospace;font-size:12px}
.muted{color:#8b93a7}

/* ---- Login ---- */
.login-body{display:flex;align-items:center;justify-content:center;min-height:100vh;
  background:radial-gradient(circle at 30% 20%,#2d1b69,#141021 60%);}
.login-card{background:#fff;padding:38px 34px;border-radius:20px;width:340px;box-shadow:0 20px 60px rgba(0,0,0,.4);text-align:center}
.brand-mark{font-weight:800;letter-spacing:2px;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand2));
  display:inline-block;padding:10px 18px;border-radius:12px;font-size:20px}
.brand-mark.sm{padding:4px 10px;font-size:14px;border-radius:8px}
.login-card h1{font-size:20px;margin:16px 0 2px}
.login-card .sub{color:#8b93a7;margin:0 0 18px;font-size:13px}
.login-form{text-align:left}
.login-form label{font-size:12px;color:var(--ink2);font-weight:600;display:block;margin:12px 0 4px}
.login-form input{width:100%;padding:12px;border:1px solid var(--line);border-radius:10px;font-size:15px}
.hint{margin-top:16px;font-size:12px;color:#9aa1b2}
.owner-hint{color:var(--brand);font-weight:600}

/* ---- Topbar ---- */
.topbar{display:flex;align-items:center;gap:20px;background:#fff;padding:10px 18px;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.tb-left{font-weight:700;display:flex;align-items:center;gap:8px}
.tb-nav{display:flex;gap:4px;flex:1;flex-wrap:wrap}
.tb-nav a{padding:8px 14px;border-radius:9px;font-size:14px;font-weight:600;color:var(--ink2)}
.tb-nav a.active{background:var(--brand);color:#fff}
.tb-nav a:hover:not(.active){background:#f0eefe}
.tb-right{display:flex;align-items:center;gap:12px}
.who{font-size:13px}
.role{font-size:10px;text-transform:uppercase;padding:2px 7px;border-radius:6px;font-weight:700;font-style:normal;letter-spacing:.5px}
.role-staff{background:#e0f2fe;color:#0369a1}
.role-admin{background:#ede9fe;color:#6d28d9}
.role-owner{background:#fee2e2;color:#b91c1c}

.wrap{max-width:1200px;margin:0 auto;padding:20px}
.foot{text-align:center;color:#9aa1b2;font-size:12px;padding:24px}

/* ---- Buttons ---- */
.btn{border:none;border-radius:9px;padding:9px 15px;font-size:14px;font-weight:600;cursor:pointer;display:inline-block}
.btn.primary{background:var(--brand);color:#fff}
.btn.primary:hover{background:#5b21b6}
.btn.ghost{background:#f1f3f9;color:var(--ink2)}
.btn.danger{background:#fee2e2;color:#b91c1c}
.btn.big{width:100%;padding:13px;font-size:15px;margin-top:14px}
.btn.sm{padding:6px 11px;font-size:13px}
.btn.xs{padding:4px 8px;font-size:12px}
.btn:disabled{opacity:.45;cursor:not-allowed}

.alert{padding:11px 15px;border-radius:10px;margin-bottom:14px;font-size:14px}
.alert.ok{background:#dcfce7;color:#166534}
.alert.err{background:#fee2e2;color:#b91c1c}

/* ---- POS ---- */
.pos-grid{display:grid;grid-template-columns:1fr 340px;gap:18px}
.pos-head{display:flex;align-items:center;gap:14px;margin-bottom:12px}
.pos-head h2{margin:0}
.search{flex:1;padding:10px 14px;border:1px solid var(--line);border-radius:10px;font-size:14px;background:#fff}
.cat-title{font-size:12px;text-transform:uppercase;letter-spacing:1px;color:#8b93a7;margin:16px 0 8px}
.prod-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.prod-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px;text-align:left;cursor:pointer;display:flex;flex-direction:column;gap:3px;transition:.12s;box-shadow:var(--shadow)}
.prod-card:hover:not(.out){border-color:var(--brand);transform:translateY(-1px)}
.prod-card.out{opacity:.5;cursor:not-allowed}
.pc-name{font-weight:700;font-size:14px}
.pc-flav{font-size:12px;color:var(--brand)}
.pc-price{font-weight:800;font-size:16px;margin-top:2px}
.pc-meta{display:flex;justify-content:space-between;margin-top:6px;font-size:11px}
.stock{color:#059669}.stock.low{color:var(--low);font-weight:700}
.exp{color:#8b93a7}.exp.soon{color:var(--warn);font-weight:700}

.pos-cart{background:#fff;border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);height:fit-content;position:sticky;top:70px}
.cart-items{min-height:120px;margin-bottom:12px}
.cart-empty{color:#9aa1b2;text-align:center;padding:36px 0;font-size:14px}
.ci{display:grid;grid-template-columns:1fr auto auto;gap:8px;align-items:center;padding:8px 0;border-bottom:1px solid var(--line)}
.ci-info b{font-size:13px}.ci-info small{display:block;color:var(--brand);font-size:11px}.ci-info span{font-size:11px;color:#8b93a7}
.ci-qty{display:flex;align-items:center;gap:6px}
.ci-qty button{width:26px;height:26px;border:1px solid var(--line);background:#f7f8fc;border-radius:6px;cursor:pointer;font-size:16px}
.ci-line{font-weight:700;font-size:14px}
.cart-summary{border-top:2px solid var(--line);padding-top:10px}
.cart-summary .row{display:flex;justify-content:space-between;padding:3px 0;font-size:14px}
.cart-summary .row.muted{color:#8b93a7;font-size:12px}
.cart-summary .row.total{font-size:19px;font-weight:800;border-top:1px solid var(--line);padding-top:8px;margin-top:4px}
.paylbl{display:block;font-size:12px;color:var(--ink2);font-weight:600;margin:12px 0 0}
.paylbl select{width:100%;padding:10px;border:1px solid var(--line);border-radius:9px;margin-top:4px}
#clearCart{width:100%;margin-top:8px}

/* ---- Tables ---- */
.tbl{width:100%;border-collapse:collapse;font-size:13px}
.tbl th{text-align:left;padding:9px 10px;color:#8b93a7;font-size:11px;text-transform:uppercase;letter-spacing:.5px;border-bottom:2px solid var(--line)}
.tbl td{padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}
.tbl td.low{color:var(--low)}
.row-low{background:#fff5f7}
.badge{font-size:11px;padding:3px 8px;border-radius:6px;font-weight:600}
.b-completed{background:#dcfce7;color:#166534}
.b-refunded{background:#fee2e2;color:#b91c1c}
.b-partial-refund{background:#fef3c7;color:#92400e}

/* ---- Cards / forms ---- */
.card{background:#fff;border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);margin-bottom:16px}
.card.warn{border:1px solid #fcd34d;background:#fffbeb}
.card label{display:block;font-size:12px;font-weight:600;color:var(--ink2);margin:10px 0 4px}
.card input,.card select{width:100%;padding:10px;border:1px solid var(--line);border-radius:9px;font-size:14px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.inv-layout{display:grid;grid-template-columns:1fr 320px;gap:16px}
.muted-card{color:#8b93a7;font-size:13px;line-height:1.6}
.perm-note{margin-top:14px;font-size:12px;color:var(--ink2)}
.perm-note ul{padding-left:18px;line-height:1.7}

.batches{display:flex;flex-direction:column;gap:4px}
.batch-pill{font-size:11px;background:#f1f3f9;padding:3px 7px;border-radius:6px;display:flex;align-items:center;gap:6px}
.batch-pill.soon{background:#fef3c7;color:#92400e}
.mini-adj{display:flex;gap:3px;align-items:center}
.mini-adj input{width:52px;padding:2px 4px;font-size:11px;border:1px solid var(--line);border-radius:5px}

.filters{display:flex;gap:12px;align-items:end;margin-bottom:16px;flex-wrap:wrap}
.filters label{font-size:12px;color:var(--ink2);font-weight:600}
.filters input{padding:8px;border:1px solid var(--line);border-radius:8px;margin-left:6px}

.kpis{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin-bottom:18px}
.kpi{background:#fff;border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}
.kpi span{font-size:11px;color:#8b93a7;text-transform:uppercase;letter-spacing:.5px}
.kpi b{display:block;font-size:22px;margin-top:4px}
.kpi.hi{background:linear-gradient(135deg,var(--brand),#7c3aed);color:#fff}
.kpi.hi span{color:#e0d7ff}
.kpi b.neg{color:var(--danger)}

/* ---- Modal ---- */
.modal{display:none;position:fixed;inset:0;background:rgba(20,24,36,.5);z-index:50;align-items:center;justify-content:center}
.modal.show{display:flex}
.modal-box{background:#fff;border-radius:16px;padding:22px;width:380px;max-width:92vw}
.modal-box label{display:block;font-size:12px;font-weight:600;margin:10px 0 4px;color:var(--ink2)}
.modal-box input{width:100%;padding:10px;border:1px solid var(--line);border-radius:9px}
.modal-actions{display:flex;gap:8px;margin-top:16px}

/* ---- Receipt ---- */
.receipt-wrap{max-width:360px;margin:0 auto}
.receipt{background:#fff;padding:24px;border-radius:12px;box-shadow:var(--shadow);font-family:ui-monospace,monospace;font-size:13px}
.r-brand{text-align:center;font-weight:800;font-size:24px;letter-spacing:3px}
.r-sub{text-align:center;color:#8b93a7;font-size:12px}
.r-ref{text-align:center;font-weight:700;margin-top:8px;font-size:13px}
.r-meta{text-align:center;color:#8b93a7;font-size:11px;margin-bottom:8px}
.receipt hr{border:none;border-top:1px dashed #cbd2e0;margin:8px 0}
.r-line{display:flex;justify-content:space-between;padding:2px 0}
.r-line.total{font-weight:800;font-size:15px;border-top:1px solid var(--ink);padding-top:6px;margin-top:4px}
.r-thanks{text-align:center;margin-top:14px;color:#8b93a7}
.receipt-actions{display:flex;gap:10px;margin-top:16px;justify-content:center}

@media print{ .no-print,.topbar,.foot,.filters{display:none!important} body{background:#fff} }
@media(max-width:860px){
  .pos-grid{grid-template-columns:1fr}
  .inv-layout,.two-col{grid-template-columns:1fr}
  .kpis{grid-template-columns:repeat(2,1fr)}
  .pos-cart{position:static}
}