:root{
  --c1:#1b4f72; --c2:#2e86c1; --bg:#f5f6fa;
  --ok:#27ae60; --warn:#f39c12; --bad:#e74c3c;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Malgun Gothic','Apple SD Gothic Neo',sans-serif;background:var(--bg);color:#2c3e50}

/* 인증 화면 */
.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--c1) 0%,var(--c2) 100%);padding:20px}
.auth-card{background:#fff;border-radius:16px;padding:32px 28px;width:min(420px,100%);box-shadow:0 12px 40px rgba(0,0,0,.18)}
.auth-card h1{font-size:22px;color:var(--c1);text-align:center;margin-bottom:4px}
.auth-card .sub{text-size:12px;color:#7f8c8d;text-align:center;margin-bottom:14px}
.mode-label{text-align:center;font-size:11px;color:#95a5a6;margin-bottom:14px;padding:4px 10px;background:#ecf0f1;border-radius:10px;display:inline-block;width:100%}
.auth-card .tabs{display:flex;border-bottom:2px solid #e3e8ef;margin-bottom:16px}
.auth-card .tabs button{flex:1;border:none;background:none;padding:10px;font-size:14px;cursor:pointer;color:#5b6b7b;border-bottom:3px solid transparent;margin-bottom:-2px}
.auth-card .tabs button.on{color:var(--c1);border-bottom-color:var(--c1);font-weight:700}
.auth-card input{width:100%;padding:10px 12px;border:1px solid #cfd8e3;border-radius:6px;margin-bottom:10px;font-size:14px}
.auth-card button.block{width:100%;padding:11px;font-size:15px}
.auth-card .footer-note{text-align:center;font-size:11px;color:#95a5a6;margin-top:16px}
.sm{font-size:12px;color:#7f8c8d}

/* 앱 본체 */
header{background:var(--c1);color:#fff;padding:12px 20px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px}
header h1{font-size:18px}
header .sub{font-size:12px;opacity:.85}
.header-right{display:flex;align-items:center;gap:12px}
.header-right button{padding:6px 12px;font-size:13px;background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.3);border-radius:6px}
nav{display:flex;flex-wrap:wrap;background:#fff;border-bottom:2px solid #e3e8ef;padding:0 10px;position:sticky;top:0;z-index:10}
nav button{border:none;background:none;padding:12px 14px;font-size:14px;cursor:pointer;color:#5b6b7b;border-bottom:3px solid transparent}
nav button.on{color:var(--c1);border-bottom-color:var(--c1);font-weight:700}
main{padding:16px 20px;max-width:1200px;margin:0 auto}
.page{display:none}
.page.on{display:block}
.card{background:#fff;border-radius:10px;padding:16px;margin-bottom:14px;box-shadow:0 1px 4px rgba(20,40,80,.08)}
.card h2{font-size:16px;margin-bottom:12px;color:var(--c1)}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.grow{flex:1;min-width:160px}
input,select,button{font-size:14px;padding:8px 10px;border:1px solid #cfd8e3;border-radius:6px;background:#fff}
input:focus,select:focus{outline:2px solid #aed6f1}
button.primary{background:var(--c2);color:#fff;border:none;cursor:pointer;font-weight:700}
button.primary:hover{background:#2471a3}
button.ghost{cursor:pointer}
button.danger{background:#fdecea;color:#c0392b;border:1px solid #f5b7b1;cursor:pointer}
button.mini{padding:2px 8px;font-size:12px}
table{width:100%;border-collapse:collapse;font-size:13.5px;background:#fff}
th,td{padding:8px 10px;border-bottom:1px solid #ecf0f5;text-align:left}
th{background:#f8fafc;color:#64748b;font-size:12px}
tr:hover td{background:#f7fbff}
.num{text-align:right;font-variant-numeric:tabular-nums}
.badge{display:inline-block;padding:2px 9px;border-radius:12px;font-size:12px;font-weight:700;color:#fff}
.b-ok{background:var(--ok)}.b-warn{background:var(--warn)}.b-bad{background:var(--bad)}.b-gray{background:#95a5a6}
.alert{padding:10px 14px;border-radius:8px;margin:10px 0;font-size:13.5px}
.alert.bad{background:#fdecea;color:#c0392b;border:1px solid #f5b7b1}
.alert.ok{background:#eafaf1;color:#1e8449;border:1px solid #abebc6}
.alert.warn{background:#fef9e7;color:#9a7d0a;border:1px solid #f9e79f}
.kpi{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px}
.kpi .box{background:#fff;border-radius:10px;padding:14px;text-align:center;box-shadow:0 1px 4px rgba(20,40,80,.08)}
.kpi .v{font-size:24px;font-weight:800;color:var(--c1);margin-top:4px}
.kpi .l{font-size:12px;color:#7f8c8d}
#barcodeInput,#recBarcodeInput{font-size:18px;letter-spacing:1px;font-weight:700;width:230px}
.modal-bg{position:fixed;inset:0;background:rgba(0,0,0,.45);display:none;align-items:center;justify-content:center;z-index:50}
.modal-bg.on{display:flex}
.modal{background:#fff;border-radius:12px;padding:20px;width:min(600px,94vw);max-height:88vh;overflow:auto}
.modal h3{margin-bottom:12px;color:var(--c1)}
.receipt{font-family:'Malgun Gothic',sans-serif;width:100%;padding:8px 0}
.receipt h3{text-align:center;margin:8px 0 2px}
.receipt .meta{font-size:12.5px;line-height:1.8}
.receipt table{font-size:12.5px;margin-top:8px}
@media print{
  body *{visibility:hidden}
  #printArea,#printArea *{visibility:visible}
  #printArea{position:absolute;left:0;top:0;width:100%}
  nav,header,.no-print,.header-right{display:none!important}
  .modal-bg{position:static;background:none}
  .modal{width:100%;box-shadow:none}
}