:root{--bg:#0f1115;--panel:#171a21;--panel-2:#1f232c;--border:#2a2f3a;--text:#e6e8ec;--muted:#9399a6;--accent:#6ee7b7;--accent-strong:#34d399;--danger:#f87171;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--text)}a{color:var(--accent)}button{font-family:inherit;cursor:pointer}.container{max-width:860px;margin:0 auto;padding:2rem 1.25rem 4rem}.topbar{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.25rem;border-bottom:1px solid var(--border)}.topbar a.brand{font-weight:700;text-decoration:none;color:var(--text)}.card{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:1.25rem}.input,textarea.input{width:100%;background:var(--panel-2);border:1px solid var(--border);color:var(--text);border-radius:8px;padding:.65rem .8rem;font-size:.95rem;resize:vertical}.btn{background:var(--accent-strong);color:#08130f;border:none;border-radius:8px;padding:.6rem 1rem;font-weight:600;font-size:.9rem}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.secondary{background:transparent;color:var(--text);border:1px solid var(--border)}.session-list{display:flex;flex-direction:column;gap:.6rem;margin-top:1.5rem}.session-row{display:block;padding:.8rem 1rem;border:1px solid var(--border);border-radius:8px;text-decoration:none;color:var(--text)}.session-row:hover{border-color:var(--accent-strong)}.session-row .date{color:var(--muted);font-size:.8rem}.chat-log{display:flex;flex-direction:column;gap:.9rem;margin-bottom:1rem}.msg{padding:.75rem 1rem;border-radius:10px;white-space:pre-wrap;line-height:1.45}.msg.user{background:var(--panel-2);align-self:flex-end;max-width:80%}.msg.assistant{background:var(--panel);border:1px solid var(--border);max-width:90%}.chat-form{display:flex;gap:.6rem;align-items:flex-end;position:-webkit-sticky;position:sticky;bottom:0;background:var(--bg);padding-top:.75rem}.muted{color:var(--muted)}.error{color:var(--danger);font-size:.9rem}pre.adr{white-space:pre-wrap;background:var(--panel-2);border:1px solid var(--border);border-radius:8px;padding:1rem;font-size:.85rem}