:root{
    --bg:#eef0f2;
    --bg-elev:#ffffff;
    --bg-elev-2:#f4f5f7;
    --bg-elev-3:#e8eaed;
    --wine:#166b5d;
    --wine-light:#1e8674;
    --wine-dim:#e3f2ee;
    --gold:#166b5d;
    --gold-soft:#1e8674;
    --cream:#181b1f;
    --muted:#80868f;
    --muted-2:#a4a9b1;
    --success:#166b5d;
    --success-soft:#1e8674;
    --danger:#c0392b;
    --danger-soft:#cf6154;
    --border:rgba(24,27,31,0.08);
    --border-strong:rgba(24,27,31,0.16);
    --shadow:0 6px 22px rgba(20,25,35,0.08);
    --radius:14px;
    --font-display:'IBM Plex Mono',monospace;
    --font-body:'IBM Plex Mono',monospace;
    --font-mono:'IBM Plex Mono',monospace;
  }
  *{box-sizing:border-box;}
  html,body{margin:0;padding:0;}
  body{
    background:
      radial-gradient(ellipse at top left, rgba(22,107,93,0.05), transparent 55%),
      var(--bg);
    color:var(--cream);
    font-family:var(--font-body);
    min-height:100vh;
    -webkit-font-smoothing:antialiased;
  }
  button{font-family:inherit;cursor:pointer;}
  input,select{font-family:inherit;}
  ::selection{background:var(--gold);color:#fff;}

  .hidden{display:none !important;}

  /* ---------- Scaffolding ---------- */
  #app{min-height:100vh;display:flex;flex-direction:column;}

  /* ---------- Login Screen ---------- */
  #screen-login{
    flex:1;display:flex;align-items:center;justify-content:center;
    padding:24px;
  }
  .login-card{
    width:100%;max-width:360px;
    background:linear-gradient(180deg, var(--bg-elev), var(--bg-elev-2));
    border:1px solid var(--border);
    border-radius:16px;
    padding:36px 28px 30px;
    text-align:center;
    box-shadow:var(--shadow);
    position:relative;
    overflow:hidden;
  }
  .login-card::before{
    content:"";position:absolute;top:0;left:0;right:0;height:3px;
    background:linear-gradient(90deg, transparent, var(--gold), transparent);
  }
  .login-eyebrow{
    font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
    color:var(--muted);text-transform:uppercase;margin-bottom:6px;
  }
  .login-title{
    font-family:var(--font-display);font-weight:700;font-size:23px;
    margin:0 0 26px;color:var(--cream);letter-spacing:.06em;text-transform:uppercase;
  }
  .pin-dots{display:flex;justify-content:center;gap:14px;margin-bottom:26px;}
  .pin-dot{
    width:16px;height:16px;border-radius:50%;
    border:1.5px solid var(--border-strong);
    background:transparent;transition:all .15s ease;
  }
  .pin-dot.filled{background:var(--gold);border-color:var(--gold);box-shadow:0 0 10px rgba(22,107,93,.35);}
  .pin-dots.shake{animation:shake .38s;}
  @keyframes shake{
    10%,90%{transform:translateX(-3px);}
    20%,80%{transform:translateX(5px);}
    30%,50%,70%{transform:translateX(-7px);}
    40%,60%{transform:translateX(7px);}
  }
  .keypad{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;}
  .key{
    height:58px;border-radius:12px;border:1px solid var(--border);
    background:var(--bg-elev-2);color:var(--cream);
    font-family:var(--font-mono);font-size:20px;font-weight:500;
    transition:background .12s ease, transform .06s ease;
  }
  .key:active{transform:scale(0.95);background:var(--bg-elev-3);}
  .key.fn{color:var(--gold-soft);font-family:var(--font-body);font-size:13px;}
  .login-hint{
    margin-top:18px;font-size:12px;color:var(--muted-2);
    font-family:var(--font-mono);
  }

  /* ---------- Top bar ---------- */
  .topbar{
    display:flex;align-items:center;justify-content:space-between;
    gap:12px;padding:14px 18px;
    background:linear-gradient(180deg, rgba(255,255,255,0.96), rgba(255,255,255,0.9));
    border-bottom:1px solid var(--border);
    position:sticky;top:0;z-index:20;
    backdrop-filter:blur(6px);
  }
  .brand{display:flex;flex-direction:column;line-height:1.1;}
  .brand-title{font-family:var(--font-display);font-weight:700;font-size:17px;color:var(--cream);letter-spacing:.05em;text-transform:uppercase;}
  .brand-sub{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.12em;color:var(--muted);text-transform:uppercase;}
  .topbar-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end;}

  .badge{
    display:inline-flex;align-items:center;gap:6px;
    font-family:var(--font-mono);font-size:12px;
    padding:6px 12px;border-radius:20px;border:1px solid var(--border);
    background:var(--bg-elev-2);color:var(--muted);
  }
  .badge .dot{width:7px;height:7px;border-radius:50%;background:var(--danger-soft);}
  .badge.open{color:var(--success-soft);border-color:rgba(92,122,78,0.4);}
  .badge.open .dot{background:var(--success-soft);box-shadow:0 0 6px rgba(122,156,104,.7);}

  .btn{
    border:1px solid var(--border);background:var(--bg-elev-2);color:var(--cream);
    padding:9px 14px;border-radius:8px;font-size:13px;font-weight:500;
    display:inline-flex;align-items:center;gap:6px;white-space:nowrap;
    transition:background .12s ease, border-color .12s ease, transform .05s ease;
  }
  .btn:hover{background:var(--bg-elev-3);border-color:var(--border-strong);}
  .btn:active{transform:scale(0.97);}
  .btn-primary{background:var(--cream);border-color:var(--cream);color:#fff;}
  .btn-primary:hover{background:#33383f;}
  .btn-gold{background:var(--gold);border-color:var(--gold);color:#fff;font-weight:600;}
  .btn-gold:hover{background:var(--gold-soft);}
  .btn-success{background:rgba(22,107,93,.09);border-color:rgba(22,107,93,.24);color:var(--success);}
  .btn-success:hover{background:rgba(22,107,93,.16);}
  .btn-danger{background:rgba(192,57,43,.08);border-color:rgba(192,57,43,.22);color:var(--danger);}
  .btn-danger:hover{background:rgba(192,57,43,.16);}
  .btn-sm{padding:6px 10px;font-size:12px;border-radius:6px;}
  .btn-icon{padding:8px;border-radius:8px;line-height:0;}
  .btn:disabled{opacity:.4;cursor:not-allowed;transform:none;}

  /* ---------- Main layout ---------- */
  #screen-app{flex:1;display:flex;flex-direction:column;}
  .layout{
    flex:1;display:grid;grid-template-columns:1fr;gap:16px;
    padding:16px;max-width:1400px;width:100%;margin:0 auto;
  }
  @media(min-width:920px){
    .layout{grid-template-columns:minmax(0,1.7fr) minmax(320px,1fr);align-items:start;}
  }

  .panel{
    background:var(--bg-elev);box-shadow:var(--shadow);
    border:1px solid var(--border);border-radius:var(--radius);
    padding:18px;
  }
  .panel-title{
    font-family:var(--font-display);font-weight:700;font-size:13.5px;
    margin:0 0 14px;color:var(--cream);letter-spacing:.08em;text-transform:uppercase;
    display:flex;align-items:center;justify-content:space-between;gap:10px;
    padding-bottom:10px;border-bottom:1px dashed var(--border-strong);
  }
  .panel-title small{font-family:var(--font-mono);font-size:11px;color:var(--muted-2);font-weight:400;}

  /* ---------- Closed overlay ---------- */
  .closed-state{
    display:flex;flex-direction:column;align-items:center;justify-content:center;
    text-align:center;padding:50px 20px;gap:14px;color:var(--muted);
  }
  .closed-state .lock{font-size:34px;}
  .closed-state h3{font-family:var(--font-display);color:var(--cream);margin:0;font-size:16px;letter-spacing:.06em;text-transform:uppercase;}
  .closed-state p{margin:0;font-size:13px;color:var(--muted-2);max-width:320px;}

  /* ---------- Item add row ---------- */
  .item-form{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px;position:relative;}
  .field{display:flex;flex-direction:column;gap:5px;}
  .field label{font-size:11px;color:var(--muted);font-family:var(--font-mono);letter-spacing:.03em;}
  input[type=text],input[type=number],input[type=password],select{
    background:var(--bg-elev-2);border:1px solid var(--border-strong);color:var(--cream);
    border-radius:8px;padding:10px 12px;font-size:14px;outline:none;
    transition:border-color .12s ease;
  }
  input:focus,select:focus{border-color:var(--gold);}
  .field-search{flex:1 1 220px;position:relative;}
  .field-qty{width:90px;}
  .field-price{width:130px;}
  .autocomplete-list{
    position:absolute;top:100%;left:0;right:0;margin-top:4px;
    background:var(--bg-elev-3);border:1px solid var(--border-strong);
    border-radius:8px;max-height:220px;overflow-y:auto;z-index:30;
    box-shadow:var(--shadow);
  }
  .ac-item{
    padding:10px 12px;display:flex;justify-content:space-between;gap:10px;
    font-size:13.5px;border-bottom:1px solid var(--border);
  }
  .ac-item:last-child{border-bottom:none;}
  .ac-item:hover,.ac-item.active{background:var(--wine-dim);}
  .ac-item .p{font-family:var(--font-mono);color:var(--gold-soft);white-space:nowrap;}
  .ac-empty{padding:12px;font-size:12.5px;color:var(--muted-2);}

  .item-form .btn-add{align-self:flex-end;height:41px;}

  /* ---------- Cart ---------- */
  .cart-table{width:100%;border-collapse:collapse;font-size:13.5px;}
  .cart-table th{
    text-align:left;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.06em;
    text-transform:uppercase;color:var(--muted-2);padding:0 8px 8px;border-bottom:1px solid var(--border);
  }
  .cart-table td{padding:9px 8px;border-bottom:1px solid var(--border);vertical-align:middle;}
  .cart-table tr:last-child td{border-bottom:none;}
  .cart-table .qty-input{width:52px;padding:5px 6px;text-align:center;}
  .cart-table .num{font-family:var(--font-mono);text-align:right;}
  .row-remove{background:transparent;border:none;color:var(--danger-soft);font-size:16px;padding:4px 8px;border-radius:6px;}
  .row-remove:hover{background:rgba(192,57,43,.12);}
  .cart-empty{padding:26px 10px;text-align:center;color:var(--muted-2);font-size:13px;}

  .cart-summary{
    display:flex;justify-content:space-between;align-items:center;
    margin-top:14px;padding-top:14px;border-top:1px dashed var(--border-strong);
  }
  .cart-total-label{font-family:var(--font-mono);font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.05em;}
  .cart-total-value{font-family:var(--font-mono);font-size:26px;color:var(--gold-soft);font-weight:600;}

  /* ---------- Totals sidebar ---------- */
  .totals-table{width:100%;border-collapse:collapse;font-size:13.5px;}
  .totals-table td{padding:9px 4px;border-bottom:1px solid var(--border);}
  .totals-table tr:last-child td{border-bottom:none;}
  .totals-table .t-label{color:var(--muted);}
  .totals-table .t-value{font-family:var(--font-mono);text-align:right;color:var(--cream);}
  .totals-table tr.grand td{border-top:1px solid var(--border-strong);padding-top:12px;font-weight:600;}
  .totals-table tr.grand .t-label{color:var(--gold-soft);font-family:var(--font-mono);text-transform:uppercase;font-size:11.5px;letter-spacing:.06em;}
  .totals-table tr.grand .t-value{color:var(--gold-soft);font-size:17px;}

  /* ---------- Recent sales ---------- */
  .sale-item{
    padding:11px 4px;border-bottom:1px solid var(--border);
    display:flex;justify-content:space-between;gap:8px;align-items:flex-start;
  }
  .sale-item:last-child{border-bottom:none;}
  .sale-info{display:flex;flex-direction:column;gap:2px;min-width:0;}
  .sale-time{font-family:var(--font-mono);font-size:10.5px;color:var(--muted-2);}
  .sale-desc{font-size:13px;color:var(--cream);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:210px;}
  .sale-pay{font-size:11px;color:var(--muted);}
  .sale-right{display:flex;flex-direction:column;align-items:flex-end;gap:5px;flex-shrink:0;}
  .sale-value{font-family:var(--font-mono);color:var(--gold-soft);font-size:14px;}
  .sale-cancelled .sale-desc,.sale-cancelled .sale-value{text-decoration:line-through;color:var(--muted-2) !important;}
  .tag-cancelled{font-size:9.5px;font-family:var(--font-mono);color:var(--danger);border:1px solid rgba(192,57,43,.35);padding:1px 6px;border-radius:20px;text-transform:uppercase;background:rgba(192,57,43,.06);}
  .sales-empty{padding:20px 4px;text-align:center;color:var(--muted-2);font-size:13px;}

  /* ---------- Modal ---------- */
  .modal-backdrop{
    position:fixed;inset:0;background:rgba(20,24,30,.45);
    display:flex;align-items:center;justify-content:center;z-index:100;
    padding:16px;backdrop-filter:blur(2px);
  }
  .modal{
    background:linear-gradient(180deg, var(--bg-elev), var(--bg-elev-2));
    border:1px solid var(--border-strong);border-radius:14px;
    width:100%;max-width:440px;max-height:88vh;overflow-y:auto;
    box-shadow:var(--shadow);padding:22px;
  }
  .modal.wide{max-width:640px;}
  .modal h3{font-family:var(--font-display);font-size:17px;margin:0 0 4px;color:var(--cream);letter-spacing:.05em;text-transform:uppercase;}
  .modal .sub{font-size:12.5px;color:var(--muted-2);margin:0 0 18px;}
  .modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px;}
  .radio-row{display:flex;gap:10px;margin-bottom:14px;}
  .radio-opt{
    flex:1;padding:12px;border:1px solid var(--border);border-radius:8px;text-align:center;
    font-size:13.5px;background:var(--bg-elev-2);
  }
  .radio-opt.selected{border-color:var(--gold);background:var(--wine-dim);color:var(--gold-soft);}

  /* payment rows */
  .pay-row{display:flex;gap:8px;margin-bottom:10px;align-items:center;}
  .pay-row select{flex:1;}
  .pay-row input{width:120px;}
  .pay-total-line{display:flex;justify-content:space-between;font-family:var(--font-mono);font-size:13px;margin-top:14px;padding-top:12px;border-top:1px dashed var(--border-strong);}
  .pay-total-line.balanced{color:var(--success-soft);}
  .pay-total-line.unbalanced{color:var(--danger-soft);}

  /* product admin list */
  .prod-row{display:flex;justify-content:space-between;align-items:center;padding:9px 4px;border-bottom:1px solid var(--border);gap:10px;}
  .prod-row:last-child{border-bottom:none;}
  .prod-row .name{font-size:13.5px;}
  .prod-row .price{font-family:var(--font-mono);color:var(--gold-soft);font-size:13px;}
  .prod-add-form{display:flex;gap:8px;margin-top:14px;padding-top:14px;border-top:1px dashed var(--border-strong);}
  .prod-add-form input[type=text]{flex:1;}
  .prod-add-form input[type=number]{width:110px;}
  .prod-list-wrap{max-height:280px;overflow-y:auto;margin-top:4px;}

  .toast{
    position:fixed;bottom:20px;left:50%;transform:translateX(-50%);
    background:var(--bg-elev-3);border:1px solid var(--border-strong);
    color:var(--cream);padding:11px 18px;border-radius:30px;font-size:13px;
    box-shadow:var(--shadow);z-index:200;opacity:0;pointer-events:none;
    transition:opacity .25s ease, transform .25s ease;
  }
  .toast.show{opacity:1;transform:translateX(-50%) translateY(-6px);}

  .footer-note{text-align:center;padding:14px;font-size:11px;color:var(--muted-2);font-family:var(--font-mono);}


  .login-logo{width:92px;height:92px;object-fit:contain;margin:0 auto 14px;display:block;filter:drop-shadow(0 6px 16px rgba(0,0,0,.5));}
  .brand-logo{width:36px;height:36px;object-fit:contain;border-radius:8px;flex-shrink:0;}
  .brand-row{display:flex;align-items:center;gap:10px;}

  @media(max-width:520px){
    .brand-title{font-size:17px;}
    .cart-total-value{font-size:22px;}
    .item-form{flex-direction:column;}
    .field-qty,.field-price{width:100%;}
    .item-form .btn-add{width:100%;}
    .sale-desc{max-width:140px;}
  }