*{box-sizing:border-box;margin:0;padding:0}body{color:#333;background-color:#f5f5f5;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes bounce{0%,20%,50%,80%,to{transform:translateY(0)}40%{transform:translateY(-10px)}60%{transform:translateY(-5px)}}.fade-in{animation:.5s ease-out fadeIn}
:root{--bg-color:#fff;--sidebar-bg:#f7f7f8;--text-color:#333;--message-user-bg:#007bff;--message-assistant-bg:#f1f3f4;--input-bg:#fff;--border-color:#e0e0e0;--hover-bg:#e8e8e8}[data-theme=dark]{--bg-color:#212121;--sidebar-bg:#171717;--text-color:#ececec;--message-user-bg:#2f6bb6;--message-assistant-bg:#2f2f2f;--input-bg:#2f2f2f;--border-color:#404040;--hover-bg:#2f2f2f}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif}.app{background:var(--bg-color);width:100vw;height:100vh;color:var(--text-color);display:flex;overflow:hidden}.sidebar{background-color:var(--sidebar-bg);width:260px;min-width:260px;color:var(--text-color);border-right:1px solid var(--border-color);flex-direction:column;display:flex;overflow:hidden}.sidebar-content{flex:1;padding:10px;overflow-y:auto}.theme-toggle{justify-content:center;margin-bottom:10px;display:flex}.theme-toggle button{cursor:pointer;background:0 0;border:none;border-radius:6px;padding:8px;font-size:20px;transition:background .2s}.theme-toggle button:hover{background:var(--hover-bg)}.model-selector{margin-bottom:10px}.model-selector select{border:1px solid var(--border-color);background:var(--input-bg);width:100%;color:var(--text-color);cursor:pointer;border-radius:8px;padding:10px;font-size:13px;transition:border-color .2s}.model-selector select:hover{border-color:#007bff}.model-selector select:focus{border-color:#007bff;outline:none}.new-chat-btn{width:100%;color:var(--text-color);border:1px solid var(--border-color);cursor:pointer;background:0 0;border-radius:8px;justify-content:center;align-items:center;gap:8px;margin-bottom:15px;padding:10px 16px;font-size:14px;font-weight:500;transition:all .2s;display:flex}.new-chat-btn:hover{background:var(--hover-bg)}.chat-list{flex:1;overflow-y:auto}.chat-item{cursor:pointer;border-radius:8px;align-items:center;gap:8px;margin-bottom:4px;padding:10px 12px;font-size:14px;transition:background .2s;display:flex;position:relative}.chat-item:hover,.chat-item.active{background:var(--hover-bg)}.chat-item span{text-overflow:ellipsis;white-space:nowrap;flex:1;overflow:hidden}.chat-item input{border:1px solid var(--border-color);background:var(--input-bg);color:var(--text-color);border-radius:4px;flex:1;padding:4px 8px;font-size:14px}.menu-btn{cursor:pointer;color:var(--text-color);opacity:0;background:0 0;border:none;border-radius:4px;padding:4px;font-size:16px;transition:opacity .2s,background .2s}.chat-item:hover .menu-btn{opacity:1}.menu-btn:hover{background:var(--hover-bg)}.menu{background:var(--input-bg);border:1px solid var(--border-color);z-index:100;border-radius:8px;min-width:120px;margin-top:4px;position:absolute;top:100%;right:10px;overflow:hidden;box-shadow:0 4px 12px #00000026}.menu button{text-align:left;cursor:pointer;width:100%;color:var(--text-color);background:0 0;border:none;padding:10px 16px;font-size:14px;transition:background .2s;display:block}.menu button:hover{background:var(--hover-bg)}.chat-container{background:var(--bg-color);flex-direction:column;flex:1;max-width:100%;display:flex;overflow:hidden}.chat-messages{flex-direction:column;flex:1;gap:16px;padding:20px;display:flex;overflow-y:auto}.message{word-wrap:break-word;border-radius:12px;max-width:100%;padding:16px 20px;line-height:1.6;animation:.3s ease-out fadeIn}.message strong{margin-bottom:8px;font-size:14px;font-weight:600;display:block}.message.user{background-color:var(--message-user-bg);color:#fff;max-width:80%;margin-left:auto}.message.assistant{background-color:var(--message-assistant-bg);color:var(--text-color);max-width:100%}.streaming{color:var(--text-color);opacity:.7;padding:16px;font-style:italic}.error-message{color:#e74c3c;background:#e74c3c1a;border-left:3px solid #e74c3c;border-radius:8px;margin-bottom:10px;padding:12px 16px}.chat-input{border-top:1px solid var(--border-color);background:var(--bg-color);flex-shrink:0;align-items:center;gap:8px;padding:16px 20px;display:flex}.chat-input-wrapper{border:1px solid var(--border-color);background:var(--input-bg);border-radius:24px;flex:1;align-items:center;gap:8px;padding:8px 16px;transition:border-color .2s;display:flex}.chat-input-wrapper:focus-within{border-color:#007bff}.chat-input input{color:var(--text-color);background:0 0;border:none;outline:none;flex:1;padding:4px 0;font-size:15px}.chat-input input::placeholder{color:#999}.file-upload-btn{cursor:pointer;color:#666;background:0 0;border:none;border-radius:6px;justify-content:center;align-items:center;padding:4px 8px;font-size:20px;transition:all .2s;display:flex}.file-upload-btn:hover{background:var(--hover-bg);color:#007bff}.file-upload-btn input[type=file]{display:none}.send-btn{color:#fff;cursor:pointer;background-color:#007bff;border:none;border-radius:20px;flex-shrink:0;padding:8px 20px;font-size:14px;font-weight:500;transition:background .2s}.send-btn:hover:not(:disabled){background-color:#0056b3}.send-btn:disabled{cursor:not-allowed;background-color:#ccc}.code-block-container{background:#1e1e1e;border:1px solid #333;border-radius:8px;margin:12px 0;font-family:Consolas,Monaco,Courier New,monospace;overflow:hidden}.code-block-header{background:#2d2d2d;border-bottom:1px solid #444;justify-content:space-between;align-items:center;padding:10px 16px;display:flex}.code-language{color:#aaa;text-transform:uppercase;letter-spacing:.5px;font-size:12px;font-weight:600}.copy-btn{color:#ddd;cursor:pointer;background:#3a3a3a;border:none;border-radius:6px;padding:6px 12px;font-size:12px;font-weight:500;transition:all .2s}.copy-btn:hover{color:#fff;background:#4a4a4a}.code-block{color:#d4d4d4;background:#1e1e1e;margin:0;padding:16px;font-size:14px;line-height:1.6;overflow-x:auto}.code-block code{white-space:pre;font-family:inherit;display:block}[data-theme=light] .code-block-container{background:#f6f8fa;border-color:#e1e4e8}[data-theme=light] .code-block-header{background:#f1f3f5;border-bottom-color:#e1e4e8}[data-theme=light] .code-block{color:#24292e;background:#f6f8fa}[data-theme=light] .code-language{color:#666}[data-theme=light] .copy-btn{color:#24292e;background:#e1e4e8}[data-theme=light] .copy-btn:hover{background:#d1d5da}code:not(.code-block code){color:#e83e8c;background:#96969626;border-radius:4px;padding:2px 6px;font-family:Consolas,Monaco,Courier New,monospace;font-size:.9em}[data-theme=dark] code:not(.code-block code){color:#ff6b9d;background:#ffffff1a}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:.3s ease-out fadeIn}.loading{height:100vh;color:var(--text-color);justify-content:center;align-items:center;font-size:18px;display:flex}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#888;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#555}[data-theme=dark] ::-webkit-scrollbar-thumb{background:#555}[data-theme=dark] ::-webkit-scrollbar-thumb:hover{background:#777}@media (max-width:768px){.sidebar{z-index:1000;transition:transform .3s;position:fixed;top:0;bottom:0;left:0;transform:translate(-100%)}.sidebar.open{transform:translate(0)}.chat-container{width:100%}.message{max-width:100%}.message.user{max-width:90%}.chat-input{padding:12px 16px}.chat-input-wrapper{padding:6px 12px}}@media (max-width:480px){.sidebar{width:80%}.chat-messages{gap:12px;padding:12px}.message{padding:12px 16px;font-size:14px}.code-block{padding:12px;font-size:12px}.chat-input{padding:10px 12px}.send-btn{padding:8px 16px;font-size:13px}}@media (min-width:769px) and (max-width:1024px){.sidebar{width:220px;min-width:220px}.message.user{max-width:85%}}