:root{--bg: #f1f5f9;--panel: #ffffff;--ink: #0f172a;--muted: #64748b;--line: #e2e8f0;--brand: #2563eb;--brand-ink: #1e40af;--ok: #16a34a;--bad: #dc2626}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:Segoe UI,Sarabun,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--ink)}.layout{display:grid;grid-template-columns:248px 1fr;min-height:100vh}.sidebar{background:#0f172a;color:#cbd5e1;display:flex;flex-direction:column;gap:6px;padding:18px 14px}.brand{display:flex;align-items:center;gap:10px;padding:6px 8px 18px}.brand-logo{font-size:28px}.brand-name{font-weight:700;color:#fff}.brand-sub{font-size:12px;color:#64748b}.nav-link{display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:10px;color:#cbd5e1;text-decoration:none;font-size:15px}.nav-link:hover{background:#1e293b;color:#fff}.nav-link.active{background:var(--brand);color:#fff}.nav-icon{width:22px;text-align:center}.status{margin-top:auto;font-size:13px;display:flex;align-items:center;gap:8px;padding:8px}.dot{width:9px;height:9px;border-radius:50%;background:#64748b}.dot.ok{background:var(--ok)}.dot.bad{background:var(--bad)}.content{padding:28px 32px;overflow:auto}.page-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.page-head h1{margin:0;font-size:24px}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:20px}.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:20px;margin-bottom:20px}.card h2{margin:0 0 14px;font-size:16px}.kpi{margin:0}.kpi-label{color:var(--muted);font-size:13px}.kpi-value{font-size:28px;font-weight:700;margin:6px 0 2px}.kpi-sub{color:var(--muted);font-size:12px}.table{width:100%;border-collapse:collapse;font-size:14px}.table th,.table td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}.table th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.03em}.table .r{text-align:right}.muted{color:var(--muted)}.form-grid{display:flex;flex-wrap:wrap;gap:14px;align-items:end}.form-grid label{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--muted)}.form-grid input,.form-grid select{padding:9px 11px;border:1px solid var(--line);border-radius:9px;font-size:14px;min-width:150px;color:var(--ink);background:#fff}.btn{background:var(--brand);color:#fff;border:0;border-radius:9px;padding:10px 18px;font-size:14px;font-weight:600;cursor:pointer}.btn:hover{background:var(--brand-ink)}.btn:disabled{opacity:.6;cursor:default}.btn.ghost{background:#fff;color:var(--brand);border:1px solid var(--line)}.pill{display:inline-block;padding:2px 10px;border-radius:999px;background:#e2e8f0;font-size:12px}.pill.ok{background:#dcfce7;color:#166534}.banner{background:#fef3c7;border:1px solid #fde68a;color:#92400e;padding:10px 14px;border-radius:10px;margin-bottom:16px}.chat{display:flex;flex-direction:column;height:70vh}.chat-list{flex:1;overflow:auto;display:flex;flex-direction:column;gap:10px;padding-right:6px}.bubble{max-width:75%;padding:10px 14px;border-radius:14px;line-height:1.5;white-space:pre-wrap}.bubble.user{align-self:flex-end;background:var(--brand);color:#fff;border-bottom-right-radius:4px}.bubble.assistant{align-self:flex-start;background:#f1f5f9;border-bottom-left-radius:4px}.chat-input{display:flex;gap:10px;margin-top:14px}.chat-input input{flex:1;padding:11px 14px;border:1px solid var(--line);border-radius:10px;font-size:15px}.nav-sep{color:#475569;font-size:11px;text-transform:uppercase;letter-spacing:.05em;padding:16px 12px 4px}.link-btn{background:none;border:0;color:var(--brand);cursor:pointer;font-size:13px;padding:4px 8px}.link-btn:hover{text-decoration:underline}.lang-block{margin-bottom:16px}.lang-title{font-size:13px;color:var(--muted);margin-bottom:8px}.lang-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px}.lang-grid label{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--muted)}.lang-grid input{padding:9px 11px;border:1px solid var(--line);border-radius:9px;font-size:14px}.qr-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}.qr-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;text-align:center}.qr-card img{width:100%;max-width:220px;height:auto}.qr-table{font-size:20px;font-weight:800;margin-bottom:8px}.qr-url{font-size:11px;color:var(--muted);word-break:break-all;margin-top:6px}@media print{.sidebar,.no-print{display:none!important}.layout{grid-template-columns:1fr}.content{padding:0}.qr-grid{grid-template-columns:repeat(3,1fr)}.qr-card{break-inside:avoid;border:1px solid #ccc}}.logout{margin-top:12px;background:#1e293b;color:#cbd5e1;border:1px solid #334155;border-radius:10px;padding:10px;cursor:pointer}.logout:hover{background:#334155;color:#fff}.login{min-height:100vh;display:flex;align-items:center;justify-content:center;background:#0f172a}.login-card{background:#fff;border-radius:18px;padding:32px;width:340px;text-align:center}.login-logo{font-size:44px}.login-card h1{margin:6px 0;font-size:22px}.pin-dots{display:flex;gap:14px;justify-content:center;margin:18px 0}.pin-dots .dot{width:16px;height:16px;border-radius:50%;background:#e2e8f0}.pin-dots .dot.on{background:var(--brand)}.login-err{color:var(--bad);margin-bottom:10px}.keypad{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.keypad button{padding:18px;font-size:22px;border:1px solid var(--line);background:#fff;border-radius:12px;cursor:pointer}.keypad button:active{background:#f1f5f9}.kp-ok{background:var(--brand)!important;color:#fff;border:0!important}.kp-ok:disabled{opacity:.4}.kp-clear{color:var(--muted)}.login-hint{font-size:12px;margin-top:18px}.login-tabs{display:flex;gap:8px;margin:14px 0 6px}.login-tabs button{flex:1;padding:10px;border:1px solid var(--line);background:#fff;color:var(--muted);border-radius:10px;cursor:pointer;font-size:13px}.login-tabs button.on{background:var(--brand);color:#fff;border-color:var(--brand);font-weight:600}.login-form{display:flex;flex-direction:column;gap:12px;text-align:left}.login-card input{width:100%;padding:12px;border:1px solid var(--line);border-radius:10px;font-size:15px;color:var(--ink);background:#fff}.login-card input:focus{outline:2px solid var(--brand);border-color:var(--brand)}.btn-primary{padding:13px;background:var(--brand);color:#fff;border:0;border-radius:10px;font-size:15px;font-weight:600;cursor:pointer}.btn-primary:disabled{opacity:.5;cursor:default}.btn-primary:hover:not(:disabled){background:var(--brand-ink)}.btn-ghost{padding:10px;background:none;border:0;color:var(--muted);font-size:13px;cursor:pointer;text-decoration:underline}.perm-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:8px}.perm{display:flex;align-items:center;gap:8px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;cursor:pointer;font-size:14px;background:#fff}.perm.on{border-color:var(--brand);background:#eff6ff}.perm input{width:16px;height:16px}.cashier{display:grid;grid-template-columns:320px 1fr;gap:20px;align-items:start}.bills{max-height:78vh;overflow:auto}.bill{width:100%;text-align:left;display:flex;justify-content:space-between;align-items:center;padding:14px;border:1px solid var(--line);border-radius:12px;background:#fff;margin-bottom:10px;cursor:pointer}.bill.on{border-color:var(--brand);background:#eff6ff}.bill-total{font-weight:800;color:var(--brand-ink)}.sum-line{display:flex;justify-content:space-between;padding:6px 0;font-size:15px}.sum-line.disc{color:var(--ok)}.sum-line.big{font-size:22px;font-weight:800;border-top:1px solid var(--line);margin-top:6px;padding-top:10px}.fld{display:flex;flex-direction:column;gap:6px;margin:12px 0;font-size:13px;color:var(--muted)}.fld input{padding:12px;border:1px solid var(--line);border-radius:10px;font-size:16px}.pay-label{font-size:13px;color:var(--muted);margin-top:8px}.pay-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:8px 0}.pay-grid .pay{padding:14px;border:1px solid var(--line);background:#fff;border-radius:10px;font-size:16px;cursor:pointer}.pay-grid .pay.on{background:var(--ink);color:#fff;border-color:var(--ink)}.big-pay{width:100%;padding:18px;font-size:18px}.pay-actions{margin:14px 0 10px}.row-btns{display:flex;gap:10px;flex-wrap:wrap}.btn.danger{background:#fee2e2;color:var(--bad)}.receipt-modal{background:#fff;border-radius:14px;padding:20px;width:min(420px,92%)}.print-status{padding:8px 12px;border-radius:8px;font-size:13px;margin-bottom:10px}.print-status.ok{background:#dcfce7;color:#166534}.print-status.warn{background:#fef3c7;color:#92400e}.receipt-pre{background:#f8fafc;border:1px dashed var(--line);border-radius:8px;padding:14px;font-family:Consolas,monospace;font-size:13px;white-space:pre-wrap;max-height:50vh;overflow:auto}@media (max-width: 820px){.cashier{grid-template-columns:1fr}}@media (max-width: 720px){.layout{grid-template-columns:1fr}.sidebar{flex-direction:row;flex-wrap:wrap}.status{margin:0}}