:root{--bg:#0b0d10;--panel:#14181d;--panel-2:#1b2127;--border:#272e36;--text:#e8edf2;--muted:#8b97a5;--accent:#5eb1ff;--accent-dim:#2b4a66;--user-bubble:#223040;--ai-bubble:#171c22;--danger:#ff6b6b}*{box-sizing:border-box}html,body{background:var(--bg);height:100%;color:var(--text);-webkit-font-smoothing:antialiased;margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}.app{flex-direction:column;max-width:820px;min-height:100vh;margin:0 auto;padding:0 16px;display:flex}header.top{border-bottom:1px solid var(--border);align-items:center;gap:14px;padding:20px 4px 16px;display:flex}.avatar{background:linear-gradient(145deg, var(--accent-dim), #0e1620);width:46px;height:46px;color:var(--accent);border:1px solid var(--border);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-weight:700;display:flex}.avatar.speaking{animation:1.1s ease-in-out infinite pulse}@keyframes pulse{0%,to{box-shadow:0 0 #5eb1ff59}50%{box-shadow:0 0 0 8px #5eb1ff00}}.title h1{letter-spacing:.2px;margin:0;font-size:17px}.title p{color:var(--muted);margin:2px 0 0;font-size:12.5px}.spacer{flex:1}.toggle{color:var(--muted);cursor:pointer;-webkit-user-select:none;user-select:none;border:1px solid var(--border);background:var(--panel);border-radius:20px;align-items:center;gap:7px;padding:6px 10px;font-size:12.5px;display:flex}.toggle input{accent-color:var(--accent)}.messages{flex-direction:column;flex:1;gap:14px;padding:20px 2px;display:flex;overflow-y:auto}.row{display:flex}.row.user{justify-content:flex-end}.bubble{white-space:pre-wrap;word-wrap:break-word;border-radius:16px;max-width:78%;padding:11px 15px;font-size:15px;line-height:1.5}.row.user .bubble{background:var(--user-bubble);border-bottom-right-radius:5px}.row.ai .bubble{background:var(--ai-bubble);border:1px solid var(--border);border-bottom-left-radius:5px}.bubble .cursor{background:var(--accent);vertical-align:text-bottom;width:7px;height:15px;margin-left:2px;animation:1s step-start infinite blink;display:inline-block}@keyframes blink{50%{opacity:0}}.composer{border-top:1px solid var(--border);align-items:flex-end;gap:10px;padding:14px 2px 20px;display:flex}textarea{resize:none;background:var(--panel);border:1px solid var(--border);color:var(--text);border-radius:12px;outline:none;flex:1;max-height:160px;padding:12px 14px;font-family:inherit;font-size:15px;line-height:1.4}textarea:focus{border-color:var(--accent-dim)}button.icon,button.send{border:1px solid var(--border);background:var(--panel);color:var(--text);cursor:pointer;border-radius:12px;flex-shrink:0;height:46px;transition:background .15s,border-color .15s}button.icon{width:46px;font-size:18px}button.send{background:var(--accent);color:#06121f;border-color:var(--accent);padding:0 18px;font-size:14px;font-weight:600}button:disabled{opacity:.45;cursor:not-allowed}button.icon.listening{background:var(--danger);border-color:var(--danger);color:#fff;animation:1.1s ease-in-out infinite pulse-red}@keyframes pulse-red{0%,to{box-shadow:0 0 #ff6b6b66}50%{box-shadow:0 0 0 8px #ff6b6b00}}.hint{text-align:center;color:var(--muted);padding-bottom:14px;font-size:11.5px}.banner{color:#ffb4b4;background:#2a1d1d;border:1px solid #5c3030;border-radius:10px;margin:12px 2px 0;padding:10px 14px;font-size:13px}.login-wrap{justify-content:center;align-items:center;min-height:100vh;padding:24px 16px;display:flex}.login-card{background:var(--panel);border:1px solid var(--border);border-radius:16px;flex-direction:column;gap:14px;width:100%;max-width:360px;padding:32px 26px;display:flex}.login-avatar{background:linear-gradient(145deg, var(--accent-dim), #0e1620);width:56px;height:56px;color:var(--accent);border:1px solid var(--border);border-radius:50%;justify-content:center;align-self:center;align-items:center;font-weight:700;display:flex}.login-card h1{text-align:center;margin:6px 0 0;font-size:20px}.login-sub{text-align:center;color:var(--muted);margin:0 0 6px;font-size:13.5px}.login-card label{color:var(--muted);flex-direction:column;gap:6px;font-size:12.5px;display:flex}.login-card input{background:var(--panel-2);border:1px solid var(--border);color:var(--text);border-radius:10px;outline:none;padding:11px 13px;font-family:inherit;font-size:15px}.login-card input:focus{border-color:var(--accent-dim)}.login-card button{background:var(--accent);color:#06121f;cursor:pointer;border:none;border-radius:10px;margin-top:8px;padding:12px;font-size:15px;font-weight:600}.login-card button:disabled{opacity:.55;cursor:not-allowed}.login-error{color:#ffb4b4;background:#2a1d1d;border:1px solid #5c3030;border-radius:9px;padding:9px 12px;font-size:13px}.logout{border:1px solid var(--border);color:var(--muted);cursor:pointer;background:0 0;border-radius:20px;margin-left:8px;padding:6px 11px;font-size:12px}.logout:hover{color:var(--text);border-color:var(--accent-dim)}