:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}html,body,#root{height:100%;width:100%}body{margin:0;display:block;min-width:0;min-height:100%}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}:root{--bg: #0b0f14;--bg-soft: #111720;--panel: #141c27;--panel-2: #172231;--text: #e7eef8;--muted: #9bb0c5;--primary: #4f8cff;--primary-600: #3a72df;--border: #233042;--danger: #ff5252}html,body,#root{height:100%}body{margin:0;background:radial-gradient(1200px 600px at 80% -10%,rgba(79,140,255,.15),transparent),linear-gradient(180deg,var(--bg),var(--bg-soft));color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Helvetica Neue,Arial,Noto Sans,"Apple Color Emoji","Segoe UI Emoji"}.app-root{display:flex;flex-direction:column;height:100%}.header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--border);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:color-mix(in oklab,var(--panel) 70%,transparent)}.brand{font-weight:700;letter-spacing:.4px;font-size:18px}.controls{display:flex;gap:8px;align-items:center}.input,.select,.btn{background:var(--panel-2);color:var(--text);border:1px solid var(--border);border-radius:10px;padding:10px 12px;font-size:14px}.input::placeholder{color:var(--muted)}.select{padding-right:28px}.content{display:grid;grid-template-columns:280px 1fr;gap:0;flex:1;min-height:0}.sidebar{border-right:1px solid var(--border);background:var(--panel);display:flex;flex-direction:column;min-width:0}.sidebar-header{padding:12px 14px;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.08em}.sidebar-list{overflow:auto;padding:8px;display:grid;gap:6px}.conv-item{text-align:left;background:transparent;border:1px solid transparent;border-radius:12px;padding:10px 12px;cursor:pointer;color:var(--text)}.conv-item:hover{background:var(--panel-2);border-color:var(--border)}.conv-item.active{background:color-mix(in oklab,var(--primary) 18%,var(--panel-2));border-color:color-mix(in oklab,var(--primary) 40%,var(--border))}.conv-title{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conv-sub{font-size:12px;color:var(--muted);margin-top:2px}.chat{display:flex;flex-direction:column;min-width:0}.chat-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--border);background:var(--panel)}.chat-title{font-weight:600}.chat-actions{display:flex;gap:8px}.messages{flex:1;overflow:auto;padding:16px;display:grid;gap:10px;background:linear-gradient(180deg,var(--panel) 0%,var(--panel-2) 100%)}.empty{text-align:center;margin-top:8vh;color:var(--muted)}.empty-title{font-size:20px;color:var(--text)}.empty-sub{margin-top:6px}.typing{color:var(--muted);font-style:italic;padding:8px 12px}.bubble-row{display:flex}.bubble-row.mine{justify-content:flex-end}.bubble-row.theirs{justify-content:flex-start}.bubble{max-width:72ch;padding:12px 14px;border-radius:16px;background:var(--panel);border:1px solid var(--border);box-shadow:0 10px 20px #0003}.bubble-row.mine .bubble{background:color-mix(in oklab,var(--primary) 14%,var(--panel));border-color:color-mix(in oklab,var(--primary) 40%,var(--border))}.bubble-content{white-space:pre-wrap;line-height:1.55}.bubble-meta{margin-top:6px;font-size:12px;color:var(--muted)}.composer{display:grid;grid-template-columns:1fr auto;gap:8px;padding:12px;border-top:1px solid var(--border);background:var(--panel)}.composer-input{resize:none;outline:none;border-radius:12px;border:1px solid var(--border);background:var(--panel-2);color:var(--text);padding:12px;font-size:14px}.btn{cursor:pointer}.btn.primary{background:linear-gradient(180deg,var(--primary) 0%,var(--primary-600) 100%);border:none;box-shadow:0 6px 20px #4f8cff40}.btn.primary:disabled{opacity:.6;cursor:not-allowed}.btn.secondary{background:var(--panel-2);border:1px solid var(--border)}.toast{position:fixed;right:16px;bottom:16px;padding:12px 14px;border-radius:12px;background:var(--panel);border:1px solid var(--border);box-shadow:0 10px 30px #0000004d}.toast.error{border-color:color-mix(in oklab,var(--danger) 60%,var(--border))}@media(max-width:900px){.content{grid-template-columns:1fr}.sidebar{display:none}}