*{box-sizing:border-box;margin:0;padding:0}:root{--font-body:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;--font-mono:ui-monospace,"Cascadia Code","Fira Code",Menlo,monospace}body,html{height:100%}body{font-family:var(--font-body);background:var(--bg,#171310);color:var(--text,#f2ece3)}.app{min-height:100dvh;display:flex;flex-direction:column;background:var(--bg);color:var(--text);transition:background .6s ease,color .6s ease}.header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 20px;border-bottom:1px solid var(--border);background:var(--surface);transition:background .6s ease,border-color .6s ease}.brand{font-weight:700;letter-spacing:.2px}.brand span{color:var(--accent);transition:color .6s ease}.switcher{display:flex;gap:6px;padding:4px;border:1px solid var(--border);border-radius:999px;background:var(--bg)}.switcher button{border:0;background:transparent;color:var(--text-dim);font:inherit;font-size:14px;padding:7px 16px;border-radius:999px;cursor:pointer;transition:all .25s ease}.switcher button.active{background:var(--accent);color:var(--bg);font-weight:600}.chat{flex:1 1;overflow-y:auto;padding:28px 16px 12px}.chat-inner{max-width:780px;margin:0 auto;display:flex;flex-direction:column;gap:16px}.persona-hero{text-align:center;padding:28px 0 8px}.persona-hero h1{font-size:28px;margin-bottom:4px}.persona-hero .tagline{color:var(--accent);font-size:14px;margin-bottom:14px;transition:color .6s ease}.persona-hero .links{display:flex;gap:8px;justify-content:center;flex-wrap:wrap}.persona-hero .links a{color:var(--text-dim);font-size:12.5px;text-decoration:none;border:1px solid var(--border);padding:5px 12px;border-radius:999px}.persona-hero .links a:hover{color:var(--text);border-color:var(--accent)}.msg{display:flex;gap:10px;max-width:92%}.msg.user{align-self:flex-end;flex-direction:row-reverse}.bubble{padding:12px 16px;border-radius:16px;background:var(--surface);border:1px solid var(--border);line-height:1.65;font-size:15px;overflow-wrap:anywhere;transition:background .6s ease,border-color .6s ease}.msg.user .bubble{background:var(--accent-soft);border-color:transparent}.bubble p+p{margin-top:10px}.bubble pre{background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:12px;overflow-x:auto;margin:10px 0;font-size:13.5px}.bubble code{font-family:var(--font-mono);font-size:.92em}.bubble :not(pre)>code{background:var(--accent-soft);padding:1.5px 6px;border-radius:6px}.bubble ol,.bubble ul{padding-left:20px;margin:8px 0}.typing{color:var(--text-dim);font-size:13px;padding-left:6px}.chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;padding:8px 0 4px}.chips button{font:inherit;font-size:13.5px;color:var(--text);background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:10px 14px;cursor:pointer;transition:border-color .2s ease,background .6s ease}.chips button:hover{border-color:var(--accent)}.composer{padding:10px 16px 8px}.composer-inner{max-width:780px;margin:0 auto;display:flex;gap:10px;background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:10px 10px 10px 16px;transition:background .6s ease,border-color .6s ease}.composer textarea{flex:1 1;resize:none;border:0;background:transparent;color:var(--text);font:inherit;font-size:15px;line-height:1.5;outline:none;max-height:140px}.composer textarea::placeholder{color:var(--text-dim)}.send{align-self:flex-end;border:0;border-radius:12px;background:var(--accent);color:var(--bg);width:42px;height:42px;font-size:18px;cursor:pointer;transition:opacity .2s ease,background .6s ease}.send:disabled{opacity:.45;cursor:not-allowed}.footer{text-align:center;font-size:12px;color:var(--text-dim);padding:6px 16px 14px}.footer b{color:var(--text)}@media (max-width:560px){.persona-hero h1{font-size:22px}.msg{max-width:100%}.switcher button{padding:6px 12px;font-size:13px}}.duo{display:flex;flex-direction:column;gap:10px}.speaker{font-size:11.5px;font-weight:700;letter-spacing:.6px;text-transform:uppercase;margin-bottom:6px}.speaker-hitesh{color:var(--hitesh,var(--accent))}.speaker-piyush{color:var(--piyush,var(--accent))}.avatar{width:34px;height:34px;border-radius:50%;border:1px solid var(--border);flex-shrink:0;align-self:flex-end}.hero-avatar{width:88px;height:88px;border-radius:50%;border:2px solid var(--accent);margin-bottom:12px;transition:border-color .6s ease}.avatar-pair{display:flex;justify-content:center;margin-bottom:12px}.avatar-pair img{width:76px;height:76px;border-radius:50%;border:2px solid var(--accent);background:var(--surface)}.avatar-pair img+img{margin-left:-18px}.speaker{display:flex;align-items:center;gap:7px}.speaker img{width:22px;height:22px;border-radius:50%}