:root{--bg:#0a0a0b;--bg-elev:#121214;--bg-card:#1a1a1d;--border:#26262b;--fg:#ededef;--fg-muted:#9b9ba3;--accent:#22c55e;--accent-dim:#16a34a;--danger:#f87171;--radius:14px;--font:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Inter,sans-serif}*{box-sizing:border-box;margin:0;padding:0}body,html{height:100%}body{background:radial-gradient(1200px 600px at 50% -10%,#16161a 0,var(--bg) 55%);color:var(--fg);font-family:var(--font);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}.shell{min-height:100dvh;display:grid;place-items:center;padding:24px}.card{width:100%;max-width:420px;background:linear-gradient(180deg,var(--bg-card),var(--bg-elev));border:1px solid var(--border);border-radius:var(--radius);padding:36px 32px;box-shadow:0 24px 60px -20px rgba(0,0,0,.7)}.brand{font-size:13px;letter-spacing:.18em;text-transform:uppercase;color:var(--fg-muted);margin-bottom:18px}h1{font-size:26px;line-height:1.15;font-weight:600;letter-spacing:-.02em;margin-bottom:8px}.sub{font-size:14px;line-height:1.5;margin-bottom:28px}.sub,label{color:var(--fg-muted)}label{display:block;font-size:13px;margin:0 0 6px}input{width:100%;background:#0e0e10;border:1px solid var(--border);border-radius:10px;color:var(--fg);font-size:15px;padding:12px 14px;margin-bottom:16px;transition:border-color .15s ease,box-shadow .15s ease}input:focus{outline:none;border-color:var(--accent-dim);box-shadow:0 0 0 3px rgba(34,197,94,.12)}button{width:100%;background:var(--accent);color:#04130a;font-weight:600;font-size:15px;border:none;border-radius:10px;padding:13px;cursor:pointer;transition:background .15s ease,transform .05s ease}button:hover{background:var(--accent-dim)}button:active{transform:translateY(1px)}button:disabled{opacity:.55;cursor:not-allowed}.error{background:rgba(248,113,113,.1);border:1px solid rgba(248,113,113,.3);color:var(--danger);font-size:13px;border-radius:10px;padding:10px 12px;margin-bottom:16px}.qr-wrap{display:grid;place-items:center;background:#fff;border-radius:12px;padding:16px;margin:8px 0 20px;aspect-ratio:1;max-width:280px;margin-inline:auto}.qr-wrap img{width:100%;height:auto}.status{display:flex;align-items:center;gap:10px;justify-content:center;font-size:14px;color:var(--fg-muted);margin-bottom:20px}.dot{width:9px;height:9px;border-radius:50%;background:var(--fg-muted)}.dot.open{background:var(--accent);box-shadow:0 0 0 4px rgba(34,197,94,.18)}.dot.connecting{background:#fbbf24}.dot.close{background:var(--danger)}.connected{text-align:center;padding:12px 0 4px}.connected .big{font-size:44px;margin-bottom:8px}.topbar{display:flex;justify-content:space-between;align-items:center;width:100%;max-width:420px;margin-bottom:14px}.link,.topbar{color:var(--fg-muted);font-size:13px}.link{background:none;width:auto;padding:0;text-decoration:underline}.link:hover{color:var(--fg);background:none}.muted-btn{background:var(--bg-elev);border:1px solid var(--border);color:var(--fg);margin-top:4px}.muted-btn:hover{background:var(--bg-card)}