:root{--bg:#f4f5f7;--card:#fff;--text:#14161a;--muted:#6b7280;--line:#e5e7eb;--accent:#3b5bfd;--ok:#0e9f6e;--warn:#b45309;--bad:#c81e1e}
@media (prefers-color-scheme:dark){:root{--bg:#0f1115;--card:#171a21;--text:#e8eaee;--muted:#9aa3b2;--line:#2a2f3a;--accent:#7b93ff;--ok:#31c48d;--warn:#f59e0b;--bad:#f05252}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.45 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;display:flex;justify-content:center;padding:24px 16px}
.card{width:100%;max-width:460px;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px}
header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.brand{display:flex;align-items:center}.brand .logo{height:28px;width:auto;display:block}.logo-d{display:none!important}@media (prefers-color-scheme:dark){.logo-l{display:none!important}.logo-d{display:block!important}}
.store{color:var(--muted);font-size:14px;text-align:right;max-width:60%;overflow-wrap:anywhere}
.amount{font-size:32px;font-weight:700;margin-top:4px}
.desc{color:var(--muted);margin-bottom:8px;overflow-wrap:anywhere}
.testnet{display:inline-block;font-size:12px;padding:2px 8px;border-radius:999px;background:#fef3c7;color:#92400e;margin-bottom:8px}
.status{margin:12px 0;padding:10px 12px;border-radius:10px;background:var(--bg);font-weight:600}
.status.ok{color:var(--ok)}.status.warn{color:var(--warn)}.status.bad{color:var(--bad)}
.label{font-size:13px;color:var(--muted);margin:14px 0 6px}
.networks{display:flex;flex-wrap:wrap;gap:8px}
.networks button{border:1px solid var(--line);background:transparent;color:var(--text);border-radius:999px;padding:6px 12px;font-size:14px;cursor:pointer}
.networks button.active{border-color:var(--accent);background:var(--accent);color:#fff}
.row{display:flex;gap:8px;align-items:center}
code{flex:1;font:15px/1.4 ui-monospace,SFMono-Regular,Menlo,monospace;background:var(--bg);padding:8px 10px;border-radius:8px;overflow-wrap:anywhere}
.copy{border:1px solid var(--line);background:var(--card);color:var(--text);border-radius:8px;padding:8px 10px;cursor:pointer;font-size:13px;white-space:nowrap}
#qr{display:block;margin:14px auto 4px;border-radius:8px;background:#fff}
.warn{font-size:13px;color:var(--muted);padding-left:18px;margin:10px 0}
.timer{font-size:14px;color:var(--muted);margin-top:8px}
.payments ul{list-style:none;padding:0;margin:0}.payments li{font-size:14px;padding:6px 0;border-top:1px solid var(--line)}
.payments a{color:var(--accent)}
.button{display:block;text-align:center;margin-top:16px;padding:12px;border-radius:10px;background:var(--accent);color:#fff;text-decoration:none;font-weight:600}
footer{margin-top:18px;font-size:12px;text-align:center}
.muted{color:var(--muted)}.center{text-align:center;padding:24px 0}.hidden{display:none!important}
.field{display:block;width:100%;box-sizing:border-box;margin:6px 0 10px;padding:10px;border:1px solid #ccd;border-radius:8px;font:14px ui-monospace,monospace}
button.button{width:100%;border:0;cursor:pointer}
button.button:disabled{opacity:.6;cursor:default}
h1{font-size:20px;margin:8px 0 12px}

.demo{margin-top:16px;padding:14px;border:1px dashed var(--accent);border-radius:12px}.demo p{margin:0 0 10px;font-size:14px}