:root{--bg:#f8fafc;--surface:#fff;--surface2:#f1f5f9;--text:#0f172a;--muted:#64748b;--line:#e2e8f0;--gold:#f59e0b;--gold2:#fef3c7;--danger:#dc2626;--dangerBg:#fee2e2;--ok:#16a34a;--okBg:#dcfce7;--warn:#d97706;--warnBg:#ffedd5;--nav:#111827}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-size:16px;font-family:'Pretendard','Apple SD Gothic Neo','Noto Sans KR',Arial,sans-serif}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit}
.app-shell{display:flex;min-height:100vh}
.sidebar{width:246px;background:linear-gradient(180deg,var(--nav),#0f172a);color:#fff;display:flex;flex-direction:column;position:fixed;inset:0 auto 0 0;padding:18px 14px;z-index:10}
.brand{display:flex;align-items:center;gap:10px;padding:10px 12px;margin-bottom:18px}
.brand-mark{width:38px;height:38px;border-radius:14px;background:var(--gold);color:#111827;display:grid;place-items:center;font-weight:900}
.brand strong{font-size:20px;color:#fff}
.brand small{display:block;color:#cbd5e1;margin-top:2px}
.side-nav{display:flex;flex-direction:column;gap:6px}
.side-link{display:flex;align-items:center;gap:11px;padding:13px 12px;border-radius:14px;color:#cbd5e1;font-size:15px}
.side-link:hover,.side-link.active{background:rgba(245,158,11,.16);color:#fff}
.side-link.active{box-shadow:inset 3px 0 0 var(--gold)}
.user-box{margin-top:auto;border-top:1px solid rgba(255,255,255,.12);padding:14px 8px;display:flex;align-items:center;justify-content:space-between;gap:8px}
.user-box small{display:block;color:#94a3b8}
.user-box a,.link-btn{font-size:13px;color:#fbbf24}
.link-btn{background:transparent;border:0;padding:0;cursor:pointer}
.main{margin-left:246px;min-width:0;flex:1}
.top-actions{display:flex;gap:8px;align-items:center}
.content{padding:24px 26px 96px}
.page-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:18px}
.page-head h1{font-size:28px;margin:0 0 6px}
.muted{color:var(--muted);font-size:14px}
.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.grid.two{grid-template-columns:1.25fr .75fr}
.card{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:0 10px 25px rgba(15,23,42,.045);margin-bottom:16px}
.metric-card{position:relative;overflow:hidden}
.metric-card:after{content:'';position:absolute;right:-26px;top:-26px;width:86px;height:86px;border-radius:99px;background:var(--gold2)}
.metric{font-size:30px;font-weight:900;letter-spacing:-.02em;margin-top:8px;position:relative}
.metric.danger{color:var(--danger)}
.metric.ok{color:var(--ok)}
.btn{border:1px solid var(--line);background:var(--surface);color:var(--text);padding:11px 15px;border-radius:13px;display:inline-flex;align-items:center;justify-content:center;gap:6px;font-weight:800;min-height:44px;cursor:pointer}
.btn.gold{background:var(--gold);border-color:var(--gold);color:#111827}
.btn.danger{background:var(--dangerBg);border-color:#fecaca;color:var(--danger)}
.btn.full{width:100%}
.row{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}
.field{display:flex;flex-direction:column;gap:7px;font-size:14px;font-weight:800}
.form-help{color:var(--muted);font-size:13px;font-weight:500;margin:0}
.password-wrap{display:flex;gap:8px}
.password-wrap input{flex:1;min-width:0}
.password-toggle{min-width:64px;min-height:44px;border:1px solid var(--line);border-radius:13px;background:var(--surface2);color:var(--text);font-weight:800;cursor:pointer}
input,select,textarea{width:100%;background:#fff;color:var(--text);border:1px solid var(--line);border-radius:13px;padding:12px;font-size:15px}
input:focus,select:focus,textarea:focus,.password-toggle:focus{outline:3px solid rgba(245,158,11,.22);border-color:var(--gold)}
.table{width:100%;border-collapse:separate;border-spacing:0 8px;margin-top:10px}
.table th{color:var(--muted);font-size:13px;text-align:left;padding:4px 11px}
.table td{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:13px 11px}
.table td:first-child{border-left:1px solid var(--line);border-radius:14px 0 0 14px}
.table td:last-child{border-right:1px solid var(--line);border-radius:0 14px 14px 0}
.badge{display:inline-flex;align-items:center;padding:5px 9px;border-radius:999px;font-size:12px;font-weight:900}
.badge.danger{background:var(--dangerBg);color:var(--danger)}
.badge.ok{background:var(--okBg);color:var(--ok)}
.badge.warn{background:var(--warnBg);color:var(--warn)}
.badge.gold{background:var(--gold2);color:#92400e}
.activity{display:flex;gap:12px;padding:13px;border:1px solid var(--line);border-radius:16px;background:#fff;margin-bottom:10px}
.activity-icon{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:var(--surface2);font-size:20px;flex:0 0 auto}
.activity-main{min-width:0;flex:1}
.activity-title{display:flex;justify-content:space-between;gap:10px;font-weight:900}
.activity-desc{color:var(--muted);font-size:14px;margin-top:4px}
.quick-panel{background:linear-gradient(135deg,#111827,#334155);color:#fff;border:none}
.quick-panel .muted{color:#cbd5e1}
.quick-panel input,.quick-panel select{background:rgba(255,255,255,.96)}
.sale-fields{grid-template-columns:repeat(4,minmax(0,1fr))}
.sale-summary{grid-template-columns:1fr 1fr 2fr}
.form-actions{display:flex;justify-content:flex-end;margin-top:16px}
.settings-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.setup-card{padding:0;overflow:hidden}
.setup-card summary{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px;cursor:pointer;min-height:70px}
.setup-card summary h2{margin:0;font-size:20px}
.setup-card summary:after{content:'펼치기';color:var(--muted);font-size:13px;font-weight:800}
.setup-card[open] summary{border-bottom:1px solid var(--line)}
.setup-card[open] summary:after{content:'접기'}
.setup-content{padding:18px}
.setup-card.user-setup{grid-column:span 2}
.mobile-fab{display:none;position:fixed;right:18px;bottom:72px;background:var(--gold);color:#111827;border:none;border-radius:999px;padding:15px 20px;font-weight:900;box-shadow:0 12px 30px rgba(0,0,0,.22);z-index:20}
.mobile-nav{display:none}
summary::-webkit-details-marker{display:none}
.danger{color:var(--danger)}
.ok{color:var(--ok)}
@media(max-width:1100px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid.two{grid-template-columns:1fr}
.sale-fields{grid-template-columns:repeat(2,minmax(0,1fr))}
.settings-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:820px){html{scroll-padding-bottom:80px}
.sidebar{display:none}
.main{margin-left:0}
.topbar{height:62px;padding:0 14px}
.content{padding:16px 14px 110px}
.page-head{flex-direction:column}
.grid,.sale-fields,.sale-summary,.settings-grid{grid-template-columns:1fr}
.sale-summary .field,.setup-card.user-setup{grid-column:span 1!important}
.form-actions .btn{width:100%}
.card{border-radius:18px;padding:15px}
.setup-card{padding:0}
.metric{font-size:26px}
.table{display:block}
.table thead,.table th{display:none}
.table tbody,.table tr,.table td{display:block;width:100%}
.table tr{background:#fff;border:1px solid var(--line);border-radius:16px;margin-bottom:10px;padding:10px}
.table td{border:0!important;border-radius:0!important;padding:7px 4px;display:flex!important;justify-content:space-between;gap:12px}
.table td:before{content:attr(data-label);font-weight:900;color:var(--muted);min-width:72px}
.top-actions{overflow-x:auto;max-width:100%;padding-bottom:2px}
.top-actions .btn{display:inline-flex;flex:0 0 auto}
.filter-tabs{width:100%;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.filter-tabs .btn{text-align:center}
.mobile-fab{display:block}
.mobile-nav{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;left:0;right:0;bottom:0;background:#fff;border-top:1px solid var(--line);z-index:15}
.mobile-nav a{display:flex;flex-direction:column;align-items:center;gap:3px;padding:9px 4px;font-size:12px;color:var(--muted);font-weight:800}
.mobile-nav a.active{color:#111827}
.mobile-nav span{font-size:19px}
}

/* Readable controls and compact, task-first layouts. */
.muted,.field,.activity-desc,.table th{font-size:15px}
.badge{font-size:14px}
.auth-shell .main{margin-left:0}
.auth-shell .content{padding:24px}
.auth-card{max-width:460px;margin:8vh auto}
.auth-card .row{grid-template-columns:1fr}
.notice{padding:14px 18px;border-radius:14px;margin-bottom:16px;background:#ecfdf5;border:1px solid #86efac;color:#14532d}
.notice.error{background:#fef2f2;border-color:#fca5a5;color:#991b1b}
.filter-form{margin:14px 0}
.filter-form .row{align-items:end}
.pagination{display:flex;gap:12px;align-items:center;justify-content:center;margin-top:18px;flex-wrap:wrap}
.btn[aria-current="page"]{background:var(--gold2);border-color:var(--gold);color:#78350f}
.summary-strip{display:flex;flex-wrap:wrap;gap:16px;margin:0 0 16px;padding:12px 16px;border:1px solid var(--line);border-radius:14px;background:white}
.summary-strip strong{font-size:20px}
.quick-panel details{margin-top:16px}
.quick-panel summary{cursor:pointer;font-weight:800;padding:10px 0}
.extra-fields{margin-top:12px}
.activity-title{flex-wrap:wrap}
.activity-title b{font-variant-numeric:tabular-nums}
.activity-desc{overflow-wrap:anywhere}
.table td.number{text-align:right;font-variant-numeric:tabular-nums}
.order-details{background:var(--surface2);color:var(--text);margin-top:14px}
.order-summary{display:flex;gap:12px;justify-content:space-between;align-items:center;flex-wrap:wrap;cursor:pointer}
.section-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.section-actions form{margin:0}
.form-error{color:#b91c1c;font-size:14px}
.quick-panel .form-error{color:#fecaca}
.quick-panel .form-help{color:#cbd5e1}
.field input[aria-invalid="true"]{border:2px solid #dc2626}
button:disabled{opacity:.65;cursor:wait}
.master-table{overflow-x:auto}
.receipt-preview img{max-width:100%;max-height:320px;object-fit:contain}
.inventory-tools{margin-top:20px}
@media(max-width:820px){
 .content{padding-bottom:calc(110px + env(safe-area-inset-bottom))}
 .mobile-nav{padding-bottom:env(safe-area-inset-bottom)}
 .dashboard-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
 .dashboard-metrics .metric{font-size:22px}
 .dashboard-metrics .card{padding:12px}
 /* The small two-column cards need their full width for readable labels. */
 .dashboard-metrics .metric-card:after{display:none}
 .summary-strip{gap:10px;font-size:14px}
 .summary-strip strong{font-size:18px}
 .activity{gap:8px;padding:12px}
 .activity-icon{display:none}
 .activity>.btn{padding:9px;align-self:flex-start}
 .sale-summary{position:relative}
 .form-actions{position:sticky;bottom:70px;padding:10px 0;background:inherit;z-index:4}
 .filter-tabs{grid-template-columns:repeat(2,minmax(0,1fr))}
 .order-summary{align-items:flex-start}
 .page-head h1{font-size:26px}
 .top-actions{flex-wrap:wrap;overflow:visible}
 /* Long identifiers stay inside the mobile label/value columns. */
 .backup-table td,.staff-table td{display:grid!important;grid-template-columns:72px minmax(0,1fr);overflow-wrap:anywhere}
 .staff-identity{min-width:0}
}