.app{display:flex;flex-direction:row;height:100%}.sidebar{width:260px;flex-shrink:0;background:var(--bg-elev);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:12px;gap:10px;transition:width .2s,padding .2s;overflow:hidden}.sidebar-closed{width:0;padding:12px 0;border-right:none}.btn-new-chat{background:var(--accent);border:none;color:#fff;padding:10px 14px;border-radius:8px;font-size:14px;font-weight:600;white-space:nowrap;transition:background .15s}.btn-new-chat:hover{background:var(--accent-hover)}.chat-list{display:flex;flex-direction:column;gap:4px;overflow-y:auto;flex:1}.chat-item{display:flex;align-items:center;justify-content:space-between;gap:6px;padding:9px 10px;border-radius:8px;cursor:pointer;font-size:13px;color:var(--text-dim);white-space:nowrap}.chat-item:hover{background:var(--bg-panel);color:var(--text)}.chat-item.active{background:var(--bg-panel);color:var(--text);border:1px solid var(--border)}.chat-item-title{overflow:hidden;text-overflow:ellipsis;flex:1}.chat-item-del{background:transparent;border:none;color:var(--text-dim);font-size:18px;line-height:1;padding:0 4px;opacity:0;transition:opacity .15s,color .15s}.chat-item:hover .chat-item-del{opacity:1}.chat-item-del:hover{color:#e06c6c}.main-area{flex:1;display:flex;flex-direction:column;min-width:0;max-width:900px;margin:0 auto;width:100%}.header-left{display:flex;align-items:center;gap:12px}.btn-icon{background:transparent;border:1px solid var(--border);color:var(--text-dim);width:34px;height:34px;border-radius:8px;font-size:16px;transition:all .15s}.btn-icon:hover{color:var(--text);border-color:var(--accent)}.header{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--border);background:var(--bg-panel)}.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:16px}.brand-dot{width:10px;height:10px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent)}.header-actions{display:flex;gap:8px}.btn-ghost{background:transparent;border:1px solid var(--border);color:var(--text-dim);padding:7px 14px;border-radius:8px;font-size:13px;transition:all .15s}.btn-ghost:hover{color:var(--text);border-color:var(--accent)}.settings{display:flex;flex-wrap:wrap;gap:18px;padding:16px 20px;background:var(--bg-elev);border-bottom:1px solid var(--border)}.field{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--text-dim);flex:1;min-width:200px}.field input,.field select{background:var(--bg);border:1px solid var(--border);color:var(--text);padding:9px 12px;border-radius:8px;font-size:14px;outline:none}.field input:focus,.field select:focus{border-color:var(--accent)}.field input[type=range]{padding:0;accent-color:var(--accent)}.chat{flex:1;overflow-y:auto;padding:24px 20px;display:flex;flex-direction:column;gap:20px}.empty{margin:auto;text-align:center;color:var(--text-dim)}.empty h1{font-size:24px;color:var(--text);margin-bottom:8px}.msg{display:flex;flex-direction:column;gap:6px}.msg-role{font-size:12px;font-weight:600;color:var(--text-dim);text-transform:uppercase;letter-spacing:.5px}.msg-content{padding:12px 16px;border-radius:12px;line-height:1.6;word-break:break-word}.text-segment{white-space:pre-wrap}.msg-user .msg-content{background:var(--user-bubble);align-self:flex-start}.msg-assistant .msg-content{background:var(--assistant-bubble);border:1px solid var(--border)}.cursor{display:inline-block;width:8px;height:16px;background:var(--accent);animation:blink 1s steps(2) infinite;vertical-align:middle}@keyframes blink{0%,50%{opacity:1}50.01%,to{opacity:0}}.error-bar{margin:0 20px 8px;padding:10px 14px;background:#3a1d1d;border:1px solid #6b2b2b;color:#f2b8b8;border-radius:8px;font-size:13px}.composer{display:flex;flex-direction:column;gap:10px;padding:16px 20px 20px;border-top:1px solid var(--border);background:var(--bg-panel)}.composer-row{display:flex;gap:10px;align-items:flex-end}.btn-attach{flex-shrink:0;width:42px;height:42px;border-radius:10px;background:var(--bg);border:1px solid var(--border);color:var(--text-dim);font-size:22px;line-height:1;transition:all .15s}.btn-attach:hover{color:var(--text);border-color:var(--accent)}.attach-preview{display:flex;flex-wrap:wrap;gap:8px}.attach-chip{display:flex;align-items:center;gap:6px;padding:5px 8px;background:var(--bg);border:1px solid var(--border);border-radius:8px;font-size:12px;color:var(--text-dim);max-width:200px}.attach-thumb{width:28px;height:28px;object-fit:cover;border-radius:4px}.attach-icon{font-size:14px}.attach-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.attach-remove{background:transparent;border:none;color:var(--text-dim);font-size:16px;line-height:1;padding:0 2px}.attach-remove:hover{color:#e06c6c}.msg-attachments{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:8px}.msg-att-img{max-width:220px;max-height:220px;border-radius:8px;border:1px solid var(--border)}.msg-att-file{font-size:12px;color:var(--text-dim);padding:4px 8px;background:var(--bg);border:1px solid var(--border);border-radius:6px}.composer textarea{flex:1;resize:none;background:var(--bg);border:1px solid var(--border);color:var(--text);padding:12px 14px;border-radius:10px;font-size:15px;line-height:1.5;outline:none;max-height:200px}.composer textarea:focus{border-color:var(--accent)}.btn-send{background:var(--accent);border:none;color:#fff;padding:0 22px;border-radius:10px;font-size:15px;font-weight:600;transition:background .15s}.btn-send:hover:not(:disabled){background:var(--accent-hover)}.btn-send:disabled{opacity:.4;cursor:not-allowed}.btn-stop{background:#6b2b2b}.btn-stop:hover{background:#8a3838}.code-block{margin:10px 0;border:1px solid var(--border);border-radius:10px;overflow:hidden;background:#0b0d11}.code-header{display:flex;align-items:center;justify-content:space-between;padding:6px 12px;background:#14171e;border-bottom:1px solid var(--border)}.code-lang{font-size:12px;color:var(--text-dim);font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace;text-transform:lowercase}.code-copy{background:transparent;border:1px solid var(--border);color:var(--text-dim);padding:3px 10px;border-radius:6px;font-size:12px;transition:all .15s}.code-actions{display:flex;gap:6px}.code-copy:hover{color:var(--text);border-color:var(--accent)}.code-block pre{margin:0;padding:14px 16px;overflow-x:auto}.code-block code{font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace;font-size:13.5px;line-height:1.5;color:#e6e8ec;white-space:pre}:root{--bg: #0f1115;--bg-panel: #171a21;--bg-elev: #1e222b;--border: #2a2f3a;--text: #e6e8ec;--text-dim: #9aa2af;--accent: #c96442;--accent-hover: #d97757;--user-bubble: #2b3140;--assistant-bubble: #171a21;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;color-scheme:dark}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{background:var(--bg);color:var(--text)}button{font-family:inherit;cursor:pointer}textarea,input,select{font-family:inherit}