:root{--bg: #0a0e14;--bar: #10151f;--line: #1b2331;--ink: #e8eef5;--muted: #7d8aa0;--blue: #2a7bff;--white-bubble: #23272e;--accent: #57d9a3;--danger: #ff6b6b;color-scheme:dark}*{box-sizing:border-box}html,body{height:100%}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}button,input,textarea,select{font:inherit;color:inherit}a{color:var(--accent)}.app{display:flex;flex-direction:column;height:100dvh;max-width:900px;margin:0 auto;background:var(--bg)}.header{display:grid;grid-template-columns:44px 1fr 44px;align-items:center;padding:env(safe-area-inset-top) 8px 0;height:calc(52px + env(safe-area-inset-top));background:var(--bar);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.header .title{text-align:center;font-weight:600;font-size:1.05rem}.iconbtn{background:none;border:0;cursor:pointer;color:var(--ink);width:44px;height:44px;display:grid;place-items:center;border-radius:10px}.iconbtn:hover{background:#ffffff0f}.messages{flex:1;overflow-y:auto;padding:16px 12px 8px;display:flex;flex-direction:column;gap:6px}.row{display:flex}.row.me{justify-content:flex-end}.row.them{justify-content:flex-start}.bubble{max-width:100%;padding:9px 13px;border-radius:20px;line-height:1.35;font-size:1rem;white-space:pre-wrap;word-wrap:break-word}.me .bubble{background:var(--blue);color:#fff;border-bottom-right-radius:6px}.them .bubble{background:var(--white-bubble);color:var(--ink);border-bottom-left-radius:6px}.bubble em{color:var(--muted);font-style:italic}.me .bubble em{color:#ffffffbf}.typing{color:var(--muted);font-size:.85rem;padding:2px 8px}.composer-wrap{background:var(--bar);border-top:1px solid var(--line)}.staged{position:relative;display:inline-block;margin:10px 10px 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h1{font-size:2.4rem;margin:0 0 6px;letter-spacing:-.02em}.login p{color:var(--muted);margin:0 0 24px}.login input{width:100%;margin-bottom:12px;text-align:center}.err{color:var(--danger);font-size:.85rem;margin-top:8px}