:root{--bg:#0b0d12;--panel:#151922;--panel-2:#1c2230;--border:#272e3d;--text:#e8ecf4;--muted:#9aa4b8;--accent:#7c5cff;--accent-2:#26d0ce;--danger:#ff6b6b}*{box-sizing:border-box}body,html{margin:0;padding:0;background:radial-gradient(1200px 600px at 80% -10%,#1b1430 0,var(--bg) 55%);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;min-height:100vh}a{color:var(--accent-2)}.brand{font-weight:800;letter-spacing:-.02em;background:linear-gradient(90deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}.center{min-height:100vh;display:grid;place-items:center;padding:24px}.card{width:100%;max-width:400px;background:var(--panel);border:1px solid var(--border);border-radius:18px;padding:32px;box-shadow:0 24px 60px rgba(0,0,0,.45)}.card h1{margin:0 0 4px;font-size:26px}.sub{margin:0 0 24px;font-size:14px}.sub,label{color:var(--muted)}label{display:block;font-size:13px;margin:14px 0 6px}input,textarea{width:100%;background:var(--panel-2);border:1px solid var(--border);color:var(--text);border-radius:10px;padding:12px 14px;font-size:15px;outline:none}input:focus,textarea:focus{border-color:var(--accent)}button{cursor:pointer;border:none;border-radius:10px;font-size:15px;font-weight:600;padding:12px 16px;color:#fff;background:linear-gradient(90deg,var(--accent),#5b7cff);transition:filter .15s ease}button:hover{filter:brightness(1.08)}button:disabled{opacity:.55;cursor:not-allowed}button.ghost{background:transparent;border:1px solid var(--border);color:var(--text)}button.block{width:100%;margin-top:20px}.row{display:flex;gap:10px;align-items:center}.muted{color:var(--muted);font-size:13px}.toggle{background:none;color:var(--accent-2);padding:0;font-weight:600;font-size:13px}.error{color:var(--danger);font-size:13px;margin-top:12px}.divider{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:12px;margin:18px 0}.divider:after,.divider:before{content:"";height:1px;background:var(--border);flex:1 1}.app{max-width:920px;margin:0 auto;padding:20px 16px 80px}.topbar{display:flex;align-items:center;justify-content:space-between;padding:10px 0 20px}.panel{background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:20px}.wallet{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:20px}.wallet button{flex:1 1;min-width:160px}.chat{display:flex;flex-direction:column;gap:14px;margin-bottom:18px}.msg{padding:14px 16px;border-radius:12px;border:1px solid var(--border);max-width:80%}.msg.user{align-self:flex-end;background:var(--panel-2)}.msg.ai{align-self:flex-start;background:#141b16;border-color:#244031}.msg .meta{color:var(--muted);font-size:12px;margin-top:8px}.composer{display:flex;gap:10px}.composer textarea{resize:none;height:52px}.empty{color:var(--muted);text-align:center;padding:40px 0}.notice{background:#221a0e;border:1px solid #4a3a14;color:#f0c674;border-radius:10px;padding:10px 14px;font-size:13px;margin-bottom:16px}