:root{
  --bg:#f5f7fb;--card:#fff;--ink:#111827;--muted:#6b7280;--line:#e5e7eb;
  --brand:#111827;--ok:#15803d;--warn:#b45309;--danger:#b91c1c;--nav:#0f172a;
}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--ink)}
button,input,select,textarea{font:inherit}
button{touch-action:manipulation}
.hidden{display:none!important}
.shell{display:grid;grid-template-columns:230px 1fr;min-height:100vh}
.sidebar{background:var(--nav);color:#fff;padding:22px 16px;position:sticky;top:0;height:100vh}
.brand{font-weight:800;font-size:22px;margin:0 8px 4px}
.tag{font-size:12px;color:#94a3b8;margin:0 8px 24px}
nav button{width:100%;text-align:left;background:transparent;border:0;color:#cbd5e1;padding:11px 12px;border-radius:10px;margin:3px 0;cursor:pointer}
nav button.active,nav button:hover{background:#1e293b;color:#fff}
main{padding:28px;max-width:1250px;width:100%}
.top{display:flex;gap:12px;align-items:center;justify-content:space-between;margin-bottom:22px}
h1{font-size:28px;margin:0}
h2{font-size:20px;margin:0 0 14px}
h3{font-size:16px;margin:0 0 8px}
.small{font-size:13px;color:var(--muted)}
.grid{display:grid;gap:16px}
.g4{grid-template-columns:repeat(4,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:0 2px 10px rgba(15,23,42,.04)}
.kpi b{display:block;font-size:28px;margin-top:8px}
.btn{border:0;border-radius:10px;padding:10px 14px;cursor:pointer;font-weight:700}
.btn.primary{background:var(--brand);color:#fff}
.btn.soft{background:#eef2ff;color:#111827}
.btn.danger{background:#fee2e2;color:#991b1b}
.btn.ok{background:#dcfce7;color:#166534}
.btn.link{background:transparent;color:#2563eb;padding:0}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:12px}
.field label{font-size:13px;font-weight:700}
.field input,.field select,.field textarea{border:1px solid var(--line);border-radius:10px;padding:10px 11px;background:#fff;width:100%}
table{width:100%;border-collapse:collapse}
th,td{padding:12px;border-bottom:1px solid var(--line);text-align:left;font-size:14px}
th{font-size:12px;color:var(--muted);text-transform:uppercase}
.badge{display:inline-flex;padding:5px 8px;border-radius:999px;font-size:12px;font-weight:700}
.pending{background:#fef3c7;color:#92400e}
.confirmed{background:#dcfce7;color:#166534}
.cancelled{background:#fee2e2;color:#991b1b}
.completed{background:#e0e7ff;color:#3730a3}
.product{display:grid;grid-template-columns:100px 1fr auto;gap:16px;align-items:center}
.thumb{width:100px;height:78px;border-radius:12px;background:linear-gradient(135deg,#dbeafe,#ede9fe);display:flex;align-items:center;justify-content:center;font-size:34px}
.price{font-size:20px;font-weight:800}
.calendar{overflow:auto}
.calgrid{display:grid;grid-template-columns:180px repeat(7,minmax(105px,1fr));min-width:920px}
.cell{padding:12px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}
.head{font-size:12px;font-weight:800;background:#f8fafc}
.res{font-weight:700}
.avail{font-weight:800;color:var(--ok)}
.full{font-weight:800;color:var(--danger)}
.modal{position:fixed;inset:0;background:rgba(15,23,42,.55);display:none;align-items:center;justify-content:center;padding:20px;z-index:99}
.modal.open{display:flex}
.modalbox{background:#fff;width:min(620px,100%);max-height:90vh;overflow:auto;border-radius:18px;padding:20px}
.notice{padding:12px 14px;border-radius:12px;background:#eff6ff;color:#1d4ed8;font-size:13px}
.error{padding:12px 14px;border-radius:12px;background:#fee2e2;color:#991b1b;font-size:13px}
.success{padding:12px 14px;border-radius:12px;background:#dcfce7;color:#166534;font-size:13px}
.empty{text-align:center;padding:36px;color:var(--muted)}
.storehero{background:linear-gradient(135deg,#0f172a,#334155);color:#fff;border-radius:18px;padding:28px;margin-bottom:18px}
.storehero h2{font-size:28px;margin-bottom:6px}
.authwrap{min-height:100vh;display:grid;place-items:center;padding:24px}
.authcard{width:min(460px,100%);background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:0 12px 40px rgba(15,23,42,.08)}
.publicwrap{max-width:1050px;margin:0 auto;padding:22px}
.publichead{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}
.loading{min-height:100vh;display:grid;place-items:center;color:var(--muted)}
.code{font-family:ui-monospace,Consolas,monospace;background:#f1f5f9;padding:3px 6px;border-radius:6px}

@media(max-width:900px){
  .shell{display:block}
  .sidebar{position:sticky;top:0;z-index:40;height:auto;min-height:0;padding:14px 14px 10px;box-shadow:0 2px 12px rgba(15,23,42,.18)}
  .brand{font-size:20px;margin:0 4px 1px}
  .tag{font-size:11px;margin:0 4px 10px}
  nav{display:flex;overflow-x:auto;overflow-y:hidden;gap:6px;padding-bottom:2px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  nav::-webkit-scrollbar{display:none}
  nav button{flex:0 0 auto;width:auto;min-width:max-content;margin:0;padding:9px 12px;white-space:nowrap}
  main{padding:16px;max-width:none}
  .g4,.g3,.g2{grid-template-columns:1fr 1fr}
}
@media(max-width:600px){
  .g4,.g3,.g2{grid-template-columns:1fr}
  .product{grid-template-columns:72px 1fr}
  .thumb{width:72px;height:64px}
  .product .actions{grid-column:1/-1}
  .top{align-items:flex-start;flex-direction:column}
  .storehero{padding:20px}
  .storehero h2{font-size:24px}
  h1{font-size:24px}
  .card{padding:15px}
  .publicwrap{padding:14px}
}