*,:before,:after{box-sizing:border-box}:root{--bg-primary:#0d0d0d;--bg-secondary:#1a1a1a;--bg-tertiary:#2a2a2a;--bg-hover:#333;--bg-active:#3d3d3d;--text-primary:#e4e4e7;--text-secondary:#a1a1aa;--text-muted:#71717a;--border-color:#3f3f46;--accent:#6366f1;--accent-hover:#818cf8;--user-bubble:#2f3642;--assistant-bubble:#1e1e24;--thinking-bg:#1a1a2e;--thinking-text:#a0a0c0;--scrollbar-thumb:#4a4a55;--scrollbar-track:transparent;--font-sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono:"JetBrains Mono", "Fira Code", "Cascadia Code", "Consolas", monospace;--radius-sm:6px;--radius-md:10px;--radius-lg:14px}html,body,#root{height:100%;margin:0;padding:0;overflow:hidden}body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}button{cursor:pointer;color:inherit;background:0 0;border:none;font-family:inherit}input,textarea{color:inherit;background:0 0;border:none;outline:none;font-family:inherit}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--scrollbar-track)}::-webkit-scrollbar-thumb{background:var(--scrollbar-thumb);border-radius:3px}.app-container{width:100%;height:100vh;display:flex;overflow:hidden}.sidebar{background:var(--bg-secondary);border-right:1px solid var(--border-color);flex-direction:column;gap:8px;width:280px;min-width:280px;padding:12px;display:flex;overflow:hidden}.sidebar-header{justify-content:space-between;align-items:center;padding:8px 12px;display:flex}.sidebar-header h2{margin:0;font-size:16px;font-weight:600}.new-chat-btn{border-radius:var(--radius-sm);background:var(--accent);color:#fff;justify-content:center;align-items:center;width:32px;height:32px;font-size:20px;transition:background .2s;display:flex}.new-chat-btn:hover{background:var(--accent-hover)}.chat-list{flex-direction:column;flex:1;gap:2px;display:flex;overflow-y:auto}.chat-item{border-radius:var(--radius-md);cursor:pointer;color:var(--text-secondary);justify-content:space-between;align-items:center;padding:10px 12px;transition:background .15s;display:flex}.chat-item:hover{background:var(--bg-hover)}.chat-item.active{background:var(--bg-active);color:var(--text-primary)}.chat-name{white-space:nowrap;text-overflow:ellipsis;flex:1;font-size:14px;overflow:hidden}.chat-actions{opacity:0;gap:2px;transition:opacity .15s;display:flex}.chat-item:hover .chat-actions{opacity:1}.action-btn{border-radius:var(--radius-sm);justify-content:center;align-items:center;width:24px;height:24px;padding:0;font-size:12px;transition:background .15s,color .15s;display:flex}.action-btn:hover{background:var(--bg-hover)}.rename-btn{color:var(--text-muted)}.rename-btn:hover{color:var(--accent-hover)}.rename-input{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--accent);border-radius:var(--radius-sm);outline:none;flex:1;padding:4px 8px;font-family:inherit;font-size:14px}.main-content{flex-direction:column;flex:1;min-width:0;display:flex;overflow:hidden}.top-bar{border-bottom:1px solid var(--border-color);background:var(--bg-secondary);align-items:center;gap:12px;padding:12px 16px;display:flex}.sidebar-toggle{border-radius:var(--radius-sm);padding:6px;font-size:18px}.sidebar-toggle:hover{background:var(--bg-hover)}.model-name{text-align:center;color:var(--text-primary);flex:1;font-weight:600}.settings-toggle{border-radius:var(--radius-sm);padding:6px 12px;font-size:14px}.settings-toggle:hover{background:var(--bg-hover)}.settings-panel{background:var(--bg-secondary);border-bottom:1px solid var(--border-color);flex-wrap:wrap;gap:16px;padding:16px;display:flex}.setting-group{flex:1;align-items:center;gap:12px;min-width:200px;display:flex}.setting-group label{color:var(--text-secondary);white-space:nowrap;font-size:13px}.setting-group input[type=range]{min-width:100px;accent-color:var(--accent);flex:1}.setting-group select{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:4px 8px;font-size:13px}.toggle{width:44px;height:24px;display:inline-block;position:relative}.toggle input{opacity:0;width:0;height:0}.toggle-slider{cursor:pointer;background:var(--bg-tertiary);border-radius:12px;transition:background .2s;position:absolute;inset:0}.toggle-slider:before{content:"";background:#fff;border-radius:50%;width:18px;height:18px;transition:transform .2s;position:absolute;bottom:3px;left:3px}.toggle input:checked+.toggle-slider{background:var(--accent)}.toggle input:checked+.toggle-slider:before{transform:translate(20px)}.chat-area{flex-direction:column;flex:1;display:flex;overflow:hidden}.messages-container{flex-direction:column;flex:1;gap:16px;padding:24px;display:flex;overflow-y:auto}.message{border-radius:var(--radius-lg);max-width:80%;padding:12px 16px;font-size:14px;line-height:1.6}.message.user{background:var(--user-bubble);border-bottom-right-radius:2px;align-self:flex-end}.message.assistant{background:var(--assistant-bubble);border-bottom-left-radius:2px;align-self:flex-start;max-width:90%}.message.error{color:#e06c75;border:1px solid #e06c75;align-self:flex-start}.message.streaming .cursor{background:var(--accent);border-radius:1px;width:6px;height:16px;margin-left:2px;animation:1s step-end infinite blink;display:inline-block}@keyframes blink{0%,to{opacity:1}50%{opacity:0}}.thinking-block{background:var(--thinking-bg);border-radius:var(--radius-md);border:1px solid #6464a04d;margin-bottom:12px;overflow:hidden}.thinking-header{color:var(--thinking-text);cursor:pointer;-webkit-user-select:none;user-select:none;background:#6464a026;flex-wrap:wrap;align-items:center;gap:6px;padding:8px 12px;font-size:12px;display:flex}.thinking-header:hover{background:#6464a040}.expand-hint{color:var(--text-muted);margin-left:auto;font-size:11px}.thinking-timer{color:var(--text-muted);margin-left:4px;font-size:11px}.thinking-content.collapsed{max-height:50px;color:var(--thinking-text);white-space:pre-wrap;padding:8px 12px;font-size:13px;overflow-y:auto}.thinking-content.expanded{max-height:none;color:var(--thinking-text);white-space:pre-wrap;padding:12px;font-size:13px;overflow-y:auto}.thinking-content.collapsed a,.thinking-content.expanded a{color:var(--accent-hover)}.thinking-content.collapsed code,.thinking-content.expanded code{background:#6464a033;border-radius:3px;padding:1px 4px;font-size:12px}.code-block-wrapper{margin:8px 0;position:relative}.copy-btn{background:var(--bg-tertiary);color:var(--text-secondary);border:1px solid var(--border-color);border-radius:var(--radius-sm);cursor:pointer;z-index:1;padding:3px 8px;font-size:11px;transition:background .2s,color .2s;position:absolute;top:6px;right:6px}.copy-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.content-block pre{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-sm);margin:0;padding:12px;position:relative;overflow-x:auto}.content-block{word-wrap:break-word}.content-block p{margin:0 0 8px}.content-block p:last-child{margin-bottom:0}.content-block pre{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-sm);margin:8px 0;padding:12px;overflow-x:auto}.content-block code{font-family:var(--font-mono);font-size:13px}.content-block :not(pre)>code{background:#6464a033;border-radius:3px;padding:1px 4px;font-size:12px}.content-block blockquote{border-left:3px solid var(--accent);color:var(--text-secondary);margin:8px 0;padding-left:12px}.content-block ul,.content-block ol{margin:4px 0;padding-left:20px}.content-block li{margin:2px 0}.content-block h1,.content-block h2,.content-block h3,.content-block h4{margin:8px 0 4px;font-weight:600}.usage-bar{color:var(--text-muted);gap:16px;padding:8px 0;font-size:12px;display:flex}.input-area{border-top:1px solid var(--border-color);background:var(--bg-secondary);padding:16px 24px}.input-area textarea{background:var(--bg-tertiary);width:100%;color:var(--text-primary);border:1px solid var(--border-color);border-radius:var(--radius-md);resize:none;min-height:48px;max-height:120px;padding:12px 16px;font-size:14px}.input-area textarea:focus{border-color:var(--accent)}.input-area textarea:disabled{opacity:.6;cursor:not-yet-available}.input-controls{justify-content:space-between;align-items:center;margin-top:8px;display:flex}.token-info{align-items:center;gap:8px;display:flex}.token-count{color:var(--text-muted);font-size:12px}.input-tokens{color:var(--accent-hover)}.send-btn,.abort-btn{border-radius:var(--radius-sm);padding:8px 20px;font-size:14px;font-weight:500;transition:background .2s}.send-btn{background:var(--accent);color:#fff}.send-btn:hover{background:var(--accent-hover)}.abort-btn{color:#fff;background:#e06c75}.abort-btn:hover{background:#d45a63}.welcome-screen{color:var(--text-secondary);flex-direction:column;flex:1;justify-content:center;align-items:center;gap:16px;display:flex}.welcome-screen h1{color:var(--text-primary);margin:0;font-size:32px}.welcome-screen p{margin:0;font-size:16px}.initial-input-area{width:100%;max-width:600px;padding:0 24px}.initial-input{background:var(--bg-tertiary);width:100%;color:var(--text-primary);border:1px solid var(--border-color);border-radius:var(--radius-md);resize:none;min-height:60px;max-height:150px;padding:12px 16px;font-family:inherit;font-size:14px;line-height:1.5}.initial-input:focus{border-color:var(--accent);outline:none}.initial-input::placeholder{color:var(--text-muted)}.welcome-btn{background:var(--accent);color:#fff;border-radius:var(--radius-md);padding:12px 32px;font-size:16px;font-weight:500;transition:background .2s}.welcome-btn:hover{background:var(--accent-hover)}@media (width<=768px){.sidebar{width:240px;min-width:240px}.message{max-width:95%}.settings-panel{flex-direction:column}.setting-group{min-width:100%}}