:root{
  --bg:#0f1724; --card:#0b1220; --muted:#9aa4b2; --accent:#7c5cff;
  --glass: rgba(255,255,255,0.03);
  --radius:16px;
  --glass-2: rgba(255,255,255,0.02);
}
*{box-sizing:border-box;font-family:Inter,ui-sans-serif,system-ui,Segoe UI,Roboto,'Helvetica Neue',Arial;}
html,body{height:100%;margin:0;background:
  radial-gradient(1000px 400px at 10% 10%, rgba(124,92,255,0.12), transparent 8%),
  linear-gradient(180deg,#071022 0%, var(--bg) 100%); color:#e6eef6;}
.wrap{max-width:980px;margin:48px auto;padding:28px;border-radius:20px;background:linear-gradient(180deg, rgba(255,255,255,0.02), transparent);box-shadow:0 10px 30px rgba(2,6,23,0.6);}
.header{display:flex;gap:16px;align-items:center;justify-content:space-between;margin-bottom:20px}
.brand{display:flex;gap:14px;align-items:center}
.logo{
  width:56px;height:56px;border-radius:10px;
  background:linear-gradient(135deg,var(--accent),#3dd6b8);
  display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;font-size:20px;box-shadow:0 6px 20px rgba(124,92,255,0.18);
}
h1{font-size:20px;margin:0}
p.lead{margin:0;color:var(--muted);font-size:13px}
.grid{display:grid;grid-template-columns:1fr 380px;gap:20px;margin-top:14px}
.card{background:var(--card);border-radius:14px;padding:16px;box-shadow:inset 0 1px 0 rgba(255,255,255,0.02)}
label{font-size:13px;color:var(--muted);display:block;margin-bottom:8px}
input[type="text"], select, textarea {width:100%;padding:12px;border-radius:10px;border:1px solid rgba(255,255,255,0.04);background:transparent;color:inherit;font-size:14px}
.row{display:flex;gap:12px;align-items:center}
.small{font-size:13px;color:var(--muted)}
.controls{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}
button{background:linear-gradient(90deg,var(--accent),#3dd6b8);border:none;color:#051125;padding:10px 14px;border-radius:10px;font-weight:600;cursor:pointer;box-shadow:0 8px 24px rgba(124,92,255,0.12)}
button.ghost{background:transparent;border:1px solid rgba(255,255,255,0.04);color:var(--muted);box-shadow:none}
.preview{display:flex;flex-direction:column;align-items:center;gap:12px;padding:18px;border-radius:12px;background:linear-gradient(180deg,var(--glass),var(--glass-2));min-height:360px;justify-content:center}
.qrwrap{background:#fff;padding:12px;border-radius:12px}
.meta{display:flex;gap:8px;align-items:center;justify-content:center;color:var(--muted);font-size:13px}
footer{margin-top:18px;display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:13px}
.stamp{font-weight:600;font-size:13px;color:#cbd7ff}
a.smalllink{color:var(--muted);text-decoration:none;font-size:13px}
.hint{font-size:12px;color:var(--muted);margin-top:8px}
/* responsive */
@media (max-width:900px){.grid{grid-template-columns:1fr;}.preview{min-height:260px}}