:root{
  --bg:#0b0f19;--card:#111827;--text:#e5e7eb;--muted:#9ca3af;--border:#1f2937;
  --brand1:#2563eb;--brand2:#0ea5e9;--ok:#34d399;--warn:#fbbf24;--err:#fb7185;
}
*{box-sizing:border-box}
body{
  margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;
  background:radial-gradient(1200px 600px at 30% -10%, rgba(37,99,235,.25), transparent),
             radial-gradient(900px 500px at 90% 0%, rgba(14,165,233,.18), transparent),
             var(--bg);
  color:var(--text);
}
a{color:inherit}
.topbar{
  position:sticky;top:0;z-index:10;
  display:flex;justify-content:space-between;align-items:center;
  padding:14px 18px;border-bottom:1px solid var(--border);
  background:rgba(11,15,25,.72);backdrop-filter:blur(6px);
}
.brand{display:flex;gap:12px;align-items:center}
.logo{font-size:26px}
.title{font-weight:800}
.sub{font-size:12px;color:var(--muted);margin-top:2px}
.nav{display:flex;gap:10px;align-items:center}
.container{max-width:1100px;margin:18px auto;padding:0 16px 44px}
.card{
  background:rgba(17,24,39,.92);
  border:1px solid var(--border);
  border-radius:16px;
  padding:16px;
  margin-bottom:14px;
  box-shadow:0 20px 60px rgba(0,0,0,.25);
}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
@media (max-width:900px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:600px){.grid{grid-template-columns:1fr}}
.product{
  border:1px solid var(--border);border-radius:14px;padding:12px;
  background:rgba(3,7,18,.35)
}
.product h3{margin:0 0 6px}
.muted{color:var(--muted)}
.price{font-weight:800;margin-top:8px}
.btn{
  border:0;cursor:pointer;text-decoration:none;
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 12px;border-radius:12px;color:#fff;
  background:linear-gradient(135deg,var(--brand1),var(--brand2));
  font-weight:750;
}
.btn.ghost{background:transparent;border:1px solid var(--border);color:var(--text)}
.pill{display:inline-flex;min-width:22px;justify-content:center;padding:2px 7px;border-radius:999px;background:rgba(255,255,255,.1);font-size:12px}
.table{width:100%;border-collapse:collapse;margin-top:8px}
.table th,.table td{padding:10px 8px;border-bottom:1px solid var(--border)}
.table th{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.08em}
.right{text-align:right}
.row{display:flex;gap:12px;align-items:flex-start;margin-top:12px}
@media (max-width:900px){.row{flex-direction:column}}
.box{
  flex:1;border:1px solid var(--border);border-radius:14px;padding:12px;
  background:rgba(3,7,18,.25)
}
.sum{
  margin-left:auto;min-width:340px;
  border:1px solid var(--border);border-radius:14px;padding:12px;background:rgba(3,7,18,.25)
}
@media (max-width:900px){.sum{min-width:0;width:100%}}
.sumRow{display:flex;justify-content:space-between;margin:6px 0}
.sumRow.total{font-size:16px;font-weight:900;margin-top:10px}
.mono,code{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace}
.pre{background:rgba(3,7,18,.35);border:1px solid var(--border);border-radius:12px;padding:10px;overflow:auto;max-height:360px}
.ok{color:var(--ok)} .warn{color:var(--warn)} .error{color:var(--err)}
.note{border:1px solid rgba(251,191,36,.25);background:rgba(251,191,36,.08);padding:10px 12px;border-radius:12px;margin-top:10px}
/* iframe modal */
#upi-embed-overlay{
  position:fixed;inset:0;z-index:2147483647;
  background:rgba(0,0,0,.65);
  display:flex;align-items:center;justify-content:center;
  padding:14px;
}
#upi-embed-panel{
  width:min(440px,100%);
  height:min(720px,100%);
  border-radius:16px;
  overflow:hidden;
  box-shadow:0 30px 80px rgba(0,0,0,.35);
  border:1px solid rgba(255,255,255,.06);
  background:#fff;
  display:flex;flex-direction:column;
}
#upi-embed-top{
  background:#0b0f19;color:#e5e7eb;
  display:flex;justify-content:space-between;align-items:center;
  padding:10px 12px;font-size:13px;
}
#upi-embed-top .mini{opacity:.8}
#upi-embed-close{
  background:transparent;border:1px solid rgba(255,255,255,.18);
  color:#e5e7eb;border-radius:10px;padding:6px 10px;cursor:pointer;
}
#upi-embed-frame{width:100%;height:100%;border:0}