:root{--bg: #0f1115;--panel: #171a21;--user: #f5b301;--system: #232733;--text: #e8eaed;--muted: #9aa0ab;--border: #222631;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px);--safe-left: env(safe-area-inset-left, 0px);--safe-right: env(safe-area-inset-right, 0px)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}.app{display:flex;flex-direction:column;width:100%;max-width:760px;margin:0 auto;height:100vh;height:100dvh;background:var(--bg)}@media (min-width: 760px){.app{border-left:1px solid var(--border);border-right:1px solid var(--border)}}.app__header{display:flex;align-items:baseline;gap:10px;padding:calc(14px + var(--safe-top)) clamp(16px,4vw,24px) 14px;padding-left:calc(clamp(16px,4vw,24px) + var(--safe-left));padding-right:calc(clamp(16px,4vw,24px) + var(--safe-right));border-bottom:1px solid var(--border);position:sticky;top:0;background:var(--bg);z-index:1}.app__brand{font-weight:700;color:var(--user);font-size:17px}.app__subtitle{color:var(--muted);font-size:13px}.chat{flex:1;min-height:0;overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior:contain;padding:16px clamp(12px,4vw,24px);padding-left:calc(clamp(12px,4vw,24px) + var(--safe-left));padding-right:calc(clamp(12px,4vw,24px) + var(--safe-right));display:flex;flex-direction:column;gap:10px}.chat__status,.chat__error{color:var(--muted);text-align:center;font-size:14px}.chat__error{color:#ff6b6b}.bubble{max-width:min(88%,560px);padding:10px 14px;border-radius:16px;line-height:1.45;font-size:15px;white-space:pre-wrap;overflow-wrap:anywhere}.bubble--user{align-self:flex-end;background:var(--user);color:#1a1a1a;border-bottom-right-radius:5px}.bubble--system{align-self:flex-start;background:var(--system);border-bottom-left-radius:5px}.bubble--typing{color:var(--muted);letter-spacing:2px}@media (min-width: 760px){.bubble{max-width:75%}}.composer{display:flex;gap:10px;padding:12px clamp(12px,4vw,24px) calc(12px + var(--safe-bottom));padding-left:calc(clamp(12px,4vw,24px) + var(--safe-left));padding-right:calc(clamp(12px,4vw,24px) + var(--safe-right));border-top:1px solid var(--border);background:var(--bg)}.composer__input{flex:1;min-width:0;padding:12px 14px;border-radius:14px;border:1px solid #2a2f3a;background:var(--panel);color:var(--text);font-size:16px}.composer__input:focus{outline:2px solid var(--user)}.composer__send{flex:0 0 auto;min-height:44px;padding:0 18px;border:none;border-radius:14px;background:var(--user);color:#1a1a1a;font-weight:600;font-size:15px;cursor:pointer}.composer__send:disabled{opacity:.5;cursor:not-allowed}