:root{
  --pc-primary:#172733;
  --pc-accent:#ffd341;
  --pc-success:#0b9d66;
  --pc-danger:#dc4a40;
  --pc-bg:#f6f8fa;
  --pc-surface:#fff;
  --pc-border:#d8e1e8;
  --pc-text:#17222c;
  --pc-muted:#647585;
  --pc-sidebar:220px;
  --pc-radius:12px;
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--pc-bg);color:var(--pc-text)}
a{color:inherit;text-decoration:none}
button,input,select{font:inherit}
.app-shell{display:grid;grid-template-columns:var(--pc-sidebar) 1fr;min-height:100vh}
.sidebar{background:#fff;border-right:1px solid var(--pc-border);padding:18px 14px;position:sticky;top:0;height:100vh}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;padding:8px 8px 18px}
.brand-mark{width:34px;height:34px;border-radius:9px;background:var(--pc-accent);display:grid;place-items:center;color:#fff;font-weight:900}
.business-card{padding:14px 8px;border-top:1px solid var(--pc-border);border-bottom:1px solid var(--pc-border);margin-bottom:14px}
.business-name{font-weight:750}
.muted{color:var(--pc-muted);font-size:13px}
.nav-section{font-size:10px;text-transform:uppercase;letter-spacing:.06em;color:#6d7d8b;margin:18px 8px 8px}
.nav-link{display:flex;gap:10px;align-items:center;padding:10px 11px;border-radius:8px;margin:2px 0;color:#314553}
.nav-link:hover,.nav-link.active{background:#fff3bf;color:#1a2a35}
.nav-link.danger{color:var(--pc-danger)}
.main{min-width:0}
.topbar{height:72px;background:#fff;border-bottom:1px solid var(--pc-border);display:flex;align-items:center;justify-content:space-between;padding:0 24px;position:sticky;top:0;z-index:10}
.topbar h1{font-size:22px;margin:0}
.top-actions{display:flex;gap:10px;align-items:center}
.container{padding:22px 26px}
.btn{border:1px solid var(--pc-primary);background:#fff;color:var(--pc-primary);border-radius:10px;padding:10px 16px;font-weight:700;cursor:pointer}
.btn-primary{background:var(--pc-primary);color:#fff}
.btn-accent{background:var(--pc-accent);border-color:var(--pc-accent);color:#24313a}
.btn-danger{background:var(--pc-danger);border-color:var(--pc-danger);color:#fff}
.grid{display:grid;gap:16px}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{background:var(--pc-surface);border:1px solid var(--pc-border);border-radius:var(--pc-radius);padding:18px;box-shadow:0 3px 10px rgba(23,39,51,.04)}
.metric .label{font-size:13px;color:var(--pc-muted)}
.metric .value{font-size:25px;font-weight:800;margin-top:8px}
.panel-title{font-size:16px;font-weight:800;margin:0 0 14px}
.alert{padding:13px 15px;border-radius:10px;margin-bottom:16px;border:1px solid}
.alert-success{background:#eaf8f2;border-color:#bcead6;color:#146b4a}
.alert-error{background:#fff0ee;border-color:#ffd0cb;color:#9c342d}
.table-wrap{overflow:auto;border:1px solid var(--pc-border);border-radius:12px;background:#fff}
table{width:100%;border-collapse:collapse}
th,td{padding:13px 14px;text-align:left;border-bottom:1px solid #edf1f4;font-size:14px}
th{background:#f1f4f6;color:#526575;font-size:12px}
.badge{display:inline-flex;align-items:center;border-radius:999px;padding:4px 9px;font-size:12px;font-weight:700;background:#eef3f6}
.badge-success{background:#dff6eb;color:#14714e}
.badge-danger{background:#ffe4e1;color:#a23931}
.form-card{max-width:760px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
.field label{display:block;font-size:13px;font-weight:700;margin-bottom:6px}
.field input,.field select{width:100%;border:1px solid #b8c6d2;border-radius:10px;padding:11px 12px;background:#fff;outline:none}
.field input:focus,.field select:focus{border-color:#49697f;box-shadow:0 0 0 3px rgba(73,105,127,.09)}
.full{grid-column:1/-1}
.auth-page{min-height:100vh;display:grid;place-items:center;padding:24px;background:linear-gradient(135deg,#f7f9fb,#eef3f6)}
.auth-card{width:min(460px,100%);background:#fff;border:1px solid var(--pc-border);border-radius:16px;padding:28px;box-shadow:0 16px 45px rgba(20,40,55,.08)}
.auth-card h1{margin:0 0 6px}
.auth-card .field{margin:14px 0}
.auth-foot{margin-top:18px;text-align:center;font-size:14px;color:var(--pc-muted)}
.select-business{border:1px solid #b7c4ce;border-radius:10px;padding:9px 11px;background:#fff}
.menu-toggle{display:none}
@media(max-width:1000px){
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:760px){
  .app-shell{display:block}
  .sidebar{position:fixed;left:-245px;width:230px;z-index:30;transition:.2s}
  body.menu-open .sidebar{left:0}
  .menu-toggle{display:inline-flex}
  .topbar{padding:0 14px}
  .container{padding:16px}
  .grid-4,.form-grid{grid-template-columns:1fr}
  .topbar h1{font-size:18px}
}