:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--background:#0b1020;--panel:#11182d;--panel-soft:#17213a;--border:#27334f;--text:#eef3ff;--muted:#9ca8c3;--accent:#7c9cff}*{box-sizing:border-box}body{background:radial-gradient(circle at top, #17213a 0, var(--background) 42%);color:var(--text);margin:0;font-family:Arial,Helvetica,sans-serif}button,input,textarea{font:inherit}a{color:inherit}.page{grid-template-columns:minmax(0,1fr) 360px;gap:24px;max-width:1180px;min-height:100vh;margin:0 auto;padding:32px;display:grid}.panel{background:color-mix(in srgb, var(--panel) 92%, transparent);border:1px solid var(--border);border-radius:20px;padding:20px;box-shadow:0 20px 80px #00000040}.chat{flex-direction:column;gap:16px;min-height:720px;display:flex}.messages{flex-direction:column;flex:1;gap:12px;display:flex;overflow:auto}.message{border:1px solid var(--border);white-space:pre-wrap;border-radius:16px;max-width:82%;padding:14px 16px}.message.user{background:#1d315f;align-self:flex-end}.message.assistant{background:var(--panel-soft);align-self:flex-start}.composer{gap:12px;display:flex}.composer textarea{background:var(--panel-soft);border:1px solid var(--border);color:var(--text);resize:vertical;border-radius:14px;flex:1;min-height:74px;padding:12px}.button{background:var(--accent);color:#071026;cursor:pointer;border:0;border-radius:14px;padding:0 18px;font-weight:700}.button:disabled{cursor:not-allowed;opacity:.6}.sidebar{flex-direction:column;gap:16px;display:flex}.muted{color:var(--muted)}.card{background:var(--panel-soft);border:1px solid var(--border);border-radius:16px;padding:14px}@media (max-width:900px){.page{grid-template-columns:1fr;padding:18px}}