*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary:#f7f8fa;--bg-secondary:#fff;--text-primary:#1e1e68;--text-secondary:#4b5563;--text-muted:#9ca3af;--accent:#4bc496;--accent-light:#ecfdf5;--accent-dark:#14523e;--border:#e5e7eb;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--shadow-sm:0 1px 3px #0000000a;--shadow-md:0 4px 16px #0000000f;--shadow-lg:0 8px 32px #0000001a}body{background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;height:100vh;font-family:Open Sans,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;overflow:hidden}#root{height:100vh;display:flex}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-track{background:0 0}@keyframes fadeInUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes typing{0%,60%,to{opacity:.4;transform:translateY(0)}30%{opacity:1;transform:translateY(-6px)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}.layout{width:100vw;height:100vh;display:flex;overflow:hidden}.sidebar{background:linear-gradient(#1e1e68 0%,#360084 100%);flex-direction:column;flex-shrink:0;width:242px;display:flex}.sidebar-header{justify-content:center;padding:20px 18px 12px;display:flex}.sidebar-brand{color:#fff;letter-spacing:-.3px;font-size:20px;font-weight:700}.sidebar-logo-img{filter:brightness(0)invert();width:auto;height:36px;display:block}.new-chat-btn{border-radius:var(--radius-sm);color:#fff;cursor:pointer;background:#ffffff1a;border:1px solid #ffffff26;flex-shrink:0;align-items:center;gap:8px;width:calc(100% - 24px);margin:0 12px 12px;padding:8px 12px;font-family:inherit;font-size:12px;font-weight:500;transition:background .2s;display:flex}.new-chat-btn:hover{background:#ffffff2e}.chat-history{flex:1;padding:0 12px;overflow-y:auto}.chat-history::-webkit-scrollbar{width:4px}.chat-history::-webkit-scrollbar-thumb{background:#fff3;border-radius:2px}.chat-history-item{border-radius:var(--radius-sm);color:#fff9;cursor:pointer;white-space:nowrap;text-overflow:ellipsis;align-items:center;gap:8px;padding:9px 12px;font-size:13px;transition:all .15s;display:flex;overflow:hidden}.chat-history-item:before{content:"";background:#ffffff40;border-radius:50%;flex-shrink:0;width:6px;height:6px}.chat-history-item:hover{color:#fff;background:#ffffff1a}.chat-history-item.active{color:#fff;background:#ffffff1f;font-weight:600}.chat-history-item.active:before{background:#4bc496}.chat-history-title{text-overflow:ellipsis;white-space:nowrap;flex:1;overflow:hidden}.chat-delete-btn{color:#ffffff80;cursor:pointer;background:0 0;border:none;border-radius:4px;flex-shrink:0;padding:2px;line-height:0;display:none}.chat-delete-btn:hover{color:#fff;background:#ffffff26}.chat-history-item:hover .chat-delete-btn{display:flex}.chat-name-input-wrapper{padding:4px}.chat-name-input{border-radius:var(--radius-sm);color:#fff;background:#ffffff1f;border:1px solid #ffffff4d;outline:none;width:100%;padding:7px 10px;font-family:inherit;font-size:13px}.chat-name-input::placeholder{color:#fff6}.chat-name-input:focus{border-color:#4bc496}.sidebar-footer{border-top:1px solid #ffffff1f;align-items:center;gap:10px;margin-top:auto;padding:16px 18px;display:flex}.user-avatar{color:#fff;background:linear-gradient(135deg,#00c9ff,#00e991);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:34px;height:34px;font-size:14px;font-weight:600;display:flex}.user-name{color:#fff;font-size:13px;font-weight:500}.user-role{color:#fff9;font-size:11px}.user-info{flex-direction:column;gap:3px;min-width:0;display:flex}.login-btn,.logout-btn{cursor:pointer;background:0 0;border:none;align-items:center;gap:5px;padding:0;font-size:11px;display:flex}.login-btn{color:#4bc496}.logout-btn{color:#ffffff80}.login-btn:hover,.logout-btn:hover{color:#fff}.main{background:var(--bg-primary);flex-direction:column;flex:1;min-width:0;display:flex;overflow:hidden}.messages-area,.input-area,.message-row-wrapper,.message-row{box-sizing:border-box;width:100%}.messages-area{flex:1;padding:24px 0;display:block;overflow-y:auto}.welcome{text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:14px;height:100%;padding:40px;display:flex}.welcome-avatar{color:#fff;background:linear-gradient(135deg,#1e1e68,#4bc496);border-radius:50%;justify-content:center;align-items:center;width:72px;height:72px;font-size:28px;font-weight:700;display:flex;overflow:hidden;box-shadow:0 6px 24px #1e1e6833}.welcome-avatar img{object-fit:cover;border-radius:50%;width:100%;height:100%}.welcome-title{color:var(--text-primary);letter-spacing:-.3px;font-size:24px;font-weight:700}.welcome-subtitle{color:var(--text-muted);font-size:14px}.suggestions{grid-template-columns:repeat(2,1fr);gap:12px;max-width:600px;margin-top:12px;display:grid}.suggestion-chip{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-secondary);text-align:left;cursor:pointer;box-shadow:var(--shadow-sm);padding:14px 16px;font-family:inherit;font-size:13px;line-height:1.5;transition:all .2s}.suggestion-chip:hover{border-color:var(--accent);background:var(--accent-light);color:var(--text-primary);box-shadow:var(--shadow-md);transform:translateY(-2px)}.message-row-wrapper{width:100%;display:block}.msg-avatar{border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;margin-top:2px;font-size:13px;font-weight:600;display:flex;overflow:hidden}.msg-avatar img{object-fit:cover;border-radius:50%;width:100%;height:100%}.message-row{flex-direction:row;gap:12px;width:100%;padding:12px 32px;animation:.3s fadeInUp;display:flex}.message-row.user{flex-direction:row-reverse}.msg-avatar.user{color:#fff;background:linear-gradient(135deg,#1e1e68,#360084)}.msg-avatar.assistant{color:#fff;background:linear-gradient(135deg,#4bc496,#00c9ff)}.msg-body{flex-direction:column;flex:1;gap:4px;min-width:0;max-width:75%;display:flex}.message-row.user .msg-body{align-items:flex-end}.message-row.user .msg-sender{text-align:right}.message-row.user .msg-text{color:#fff;background:linear-gradient(135deg,#1e1e68,#360084);border-radius:16px 4px 16px 16px;padding:10px 14px}.message-row.assistant .msg-text{background:var(--bg-secondary);border:1px solid var(--border);border-radius:4px 16px 16px;padding:10px 14px;overflow:hidden}.message-row.assistant .msg-text .code-block{border-radius:8px;margin:8px 0}.code-block pre,.code-block>div{background:#282c34!important}.msg-sender{color:var(--text-primary);margin-bottom:4px;font-size:13px;font-weight:600}.msg-text{color:var(--text-primary);word-wrap:break-word;word-break:break-word;width:100%;font-size:14.5px;line-height:1.7}.markdown p{margin-bottom:10px}.markdown p:last-child{margin-bottom:0}.markdown strong{font-weight:600}.markdown em{font-style:italic}.markdown code{background:var(--accent-light);color:var(--accent-dark);border-radius:4px;padding:2px 6px;font-family:SF Mono,Fira Code,Consolas,monospace;font-size:13px}.markdown pre code{background:0 0;padding:0;font-size:13px}.markdown ul,.markdown ol{margin-bottom:10px;padding-left:20px}.markdown li{margin-bottom:4px}.markdown h1,.markdown h2,.markdown h3{color:var(--text-primary);margin:16px 0 8px;font-weight:700}.markdown table{border-collapse:collapse;width:100%;margin:12px 0;font-size:13px}.markdown th,.markdown td{border:1px solid var(--border);text-align:left;padding:8px 12px}.markdown th{background:var(--bg-primary);font-weight:600}.markdown blockquote{border-left:3px solid var(--accent);color:var(--text-secondary);margin:8px 0;padding-left:12px}.cursor{color:var(--accent);font-size:14px;animation:.8s infinite pulse;display:inline-block}.typing-indicator{gap:5px;padding:6px 0;display:flex}.typing-indicator span{background:var(--accent);border-radius:50%;width:8px;height:8px;animation:1.4s infinite typing}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}.input-area{background:linear-gradient(to bottom, transparent 0%, var(--bg-primary) 40%);flex-direction:column;flex-shrink:0;padding:16px 32px 20px;display:flex}.attachments-bar{flex-wrap:wrap;gap:6px;padding:8px 12px 4px;display:flex}.attachment-chip{background:var(--bg-tertiary);border:1px solid var(--border);color:var(--text-secondary);border-radius:12px;align-items:center;gap:5px;padding:3px 8px;font-size:11px;display:inline-flex}.attachment-chip button{cursor:pointer;color:var(--text-muted);background:0 0;border:none;padding:0 0 0 2px;font-size:13px;line-height:1}.attachment-chip button:hover{color:var(--text-primary)}.attach-btn{cursor:pointer;color:var(--text-muted);background:0 0;border:none;border-radius:6px;align-items:center;padding:4px 6px;transition:color .15s,background .15s;display:flex}.attach-btn:hover{color:var(--text-primary);background:var(--bg-tertiary)}.attach-btn:disabled{opacity:.5;cursor:not-allowed}.msg-attachments{flex-wrap:wrap;gap:5px;margin-top:6px;display:flex}.input-container{background:var(--bg-secondary);border:2px solid var(--border);border-radius:var(--radius-lg);width:100%;max-width:100%;padding:8px;transition:border-color .2s,box-shadow .2s;box-shadow:0 2px 8px #0000000f}.input-container:focus-within{border-color:var(--accent);box-shadow:0 0 0 4px #4bc4961f,0 4px 12px #0000001a}.input-container textarea{width:100%;color:var(--text-primary);resize:none;background:0 0;border:none;outline:none;min-height:24px;max-height:200px;padding:8px 12px;font-family:inherit;font-size:14.5px;line-height:1.5}.input-container textarea::placeholder{color:var(--text-muted)}.input-bottom{justify-content:space-between;align-items:center;padding:4px 4px 2px;display:flex}.kb-wrapper{position:relative}.kb-btn{border:1px solid var(--border);border-radius:var(--radius-sm);color:#374151;cursor:pointer;background:#f3f4f6;align-items:center;gap:6px;padding:6px 12px;font-family:inherit;font-size:13px;font-weight:500;transition:all .15s;display:flex}.kb-btn:hover{background:#e5e7eb}.kb-badge{background:var(--accent);color:#fff;border-radius:10px;padding:1px 6px;font-size:10px;font-weight:600}.kb-dropdown{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-md);z-index:50;width:220px;box-shadow:var(--shadow-lg);padding:6px;position:absolute;bottom:calc(100% + 8px);left:0}.kb-item{color:var(--text-secondary);cursor:pointer;border-radius:6px;align-items:center;gap:8px;padding:8px 10px;font-size:13px;transition:all .12s;display:flex}.kb-item:hover{background:var(--accent-light);color:var(--text-primary)}.kb-item.active{color:var(--text-primary);font-weight:500}.kb-item .kb-check{color:var(--accent);opacity:0;width:14px;font-size:12px}.kb-item.active .kb-check{opacity:1}.kb-divider{background:var(--border);height:1px;margin:4px 8px}.kb-sub-toggle{background:var(--bg-primary);border-radius:6px;gap:2px;margin:2px 10px 6px 32px;padding:2px;display:flex}.kb-sub-btn{cursor:pointer;color:var(--text-muted);background:0 0;border:none;border-radius:5px;flex:1;padding:4px 10px;font-family:inherit;font-size:11px;font-weight:500;transition:all .15s}.kb-sub-btn:hover{color:var(--text-primary)}.kb-sub-btn.active{background:var(--accent);color:#fff;box-shadow:0 1px 3px #4bc4964d}.send-btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;width:38px;height:38px;transition:all .2s;display:flex;box-shadow:0 2px 8px #4bc4964d}.send-btn:disabled{opacity:.3;cursor:default;box-shadow:none}.send-btn:not(:disabled):hover{transform:translateY(-1px);box-shadow:0 4px 12px #4bc49666}.input-footer{color:var(--text-muted);text-align:center;margin-top:6px;font-size:11px}.tool-calls{flex-direction:column;gap:6px;margin-bottom:8px;display:flex}.tool-call{letter-spacing:.2px;border:1px solid #0000;border-radius:20px;align-items:center;gap:5px;width:fit-content;padding:5px 10px 5px 8px;font-size:11px;font-weight:500;line-height:1;display:inline-flex}.tool-call--running{color:#1e1e68;background:#1e1e680f;border-color:#1e1e6826}.tool-call--success{color:#1a7a52;background:#4bc4961f;border-color:#4bc4964d}.tool-call--error{color:#c0392b;background:#dc354514;border-color:#dc354533}.tool-call-spinner{border:1.5px solid;border-top-color:#0000;border-radius:50%;flex-shrink:0;width:9px;height:9px;animation:.7s linear infinite spin;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.code-block{border-radius:8px;margin:8px 0;overflow:hidden}.code-block-header{background:#282c34;border-bottom:1px solid #ffffff14;justify-content:space-between;align-items:center;padding:6px 12px;display:flex}.code-block-lang{color:#ffffff80;text-transform:lowercase;font-family:monospace;font-size:11px}.code-block-copy{color:#ffffff80;cursor:pointer;background:0 0;border:none;border-radius:4px;align-items:center;gap:5px;padding:2px 6px;font-size:11px;display:flex}.code-block-copy:hover{color:#ffffffd9;background:#ffffff1a}.inline-code{color:#1e1e68;background:#1e1e6814;border-radius:4px;padding:1px 5px;font-family:monospace;font-size:12px}.ppt-viewer{background:#111;border-radius:12px;flex-direction:column;height:100%;display:flex;overflow:hidden}.ppt-canvas{aspect-ratio:16/9;flex:1;position:relative;overflow:hidden}.ppt-cover{background:linear-gradient(135deg,#0d0d3b 0%,#1e1e68 55%,#360084 100%);justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:relative}.ppt-cover-accent{background:linear-gradient(#7b2fbe,#360084);width:6px;position:absolute;top:0;bottom:0;left:0}.ppt-cover-body{text-align:center;color:#fff;padding:0 48px}.ppt-cover-eyebrow{letter-spacing:.2em;text-transform:uppercase;color:#ffffff80;margin:0 0 16px;font-size:clamp(10px,1.2vw,14px)}.ppt-cover-title{color:#fff;margin:0 0 20px;font-size:clamp(20px,3.5vw,42px);font-weight:800;line-height:1.15}.ppt-cover-line{background:linear-gradient(90deg,#7b2fbe,#360084);border-radius:2px;width:60px;height:3px;margin:0 auto}.ppt-content-slide{background:#fff;flex-direction:column;width:100%;height:100%;display:flex;position:relative}.ppt-content-header{padding:28px 36px 0}.ppt-content-title{color:#1e1e68;margin:0 0 10px;font-size:clamp(16px,2.5vw,28px);font-weight:700;line-height:1.2}.ppt-content-rule{background:linear-gradient(90deg,#1e1e68,#360084);border-radius:2px;width:48px;height:3px;margin-bottom:16px}.ppt-content-body{flex:1;padding:0 36px 24px;overflow:hidden}.ppt-slide-content{color:#333;margin:0 0 12px;font-size:clamp(11px,1.4vw,15px);line-height:1.65}.ppt-slide-bullets{flex-direction:column;gap:10px;margin:0;padding:0;list-style:none;display:flex}.ppt-slide-bullets li{color:#333;align-items:flex-start;gap:10px;font-size:clamp(11px,1.3vw,14px);line-height:1.55;display:flex}.ppt-bullet-dot{background:#360084;border-radius:50%;flex-shrink:0;width:7px;height:7px;margin-top:5px}.ppt-slide-counter{color:#0000004d;font-size:11px;position:absolute;bottom:10px;right:14px}.ppt-cover .ppt-slide-counter{color:#ffffff59}.ppt-controls{background:#1a1a1a;border-top:1px solid #ffffff0f;flex-shrink:0;justify-content:space-between;align-items:center;padding:8px 14px;display:flex}.ppt-download-btn{color:#ffffffbf;cursor:pointer;background:#ffffff14;border:1px solid #ffffff26;border-radius:6px;align-items:center;gap:5px;padding:4px 10px;font-size:12px;display:flex}.ppt-download-btn:hover{background:#ffffff24}.ppt-nav{align-items:center;gap:10px;display:flex}.ppt-nav button{cursor:pointer;color:#ffffffb3;background:0 0;border:1px solid #ffffff26;border-radius:6px;justify-content:center;align-items:center;width:28px;height:28px;display:flex}.ppt-nav button:disabled{opacity:.25;cursor:default}.ppt-nav button:not(:disabled):hover{background:#ffffff1a}.ppt-dots{align-items:center;gap:5px;display:flex}.ppt-dot{cursor:pointer;background:#ffffff40!important;border:none!important;border-radius:50%!important;width:7px!important;height:7px!important;padding:0!important}.ppt-dot.active{background:#7b2fbe!important}.main.split{flex-direction:row;display:flex}.chat-panel{flex-direction:column;flex:1;min-width:0;display:flex;overflow:hidden}.main:not(.split) .chat-panel{flex-direction:column;flex:1;display:flex;overflow:hidden}.artifact-panel{background:#f8f8ff;border-left:1px solid #1e1e681f;flex-direction:column;flex-shrink:0;width:50%;animation:.2s slideIn;display:flex}@keyframes slideIn{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}.artifact-panel-header{color:#fff;background:linear-gradient(135deg,#1e1e68,#360084);flex-shrink:0;justify-content:space-between;align-items:center;padding:12px 16px;font-size:13px;font-weight:600;display:flex}.artifact-panel-title{align-items:center;gap:7px;display:flex}.artifact-close-btn{color:#ffffffb3;cursor:pointer;background:0 0;border:none;border-radius:6px;justify-content:center;align-items:center;padding:4px;line-height:0;display:flex}.artifact-close-btn:hover{color:#fff;background:#ffffff26}.artifact-panel-body{flex-direction:column;flex:1;padding:16px;display:flex;overflow:hidden}.artifact-panel-body .ppt-viewer{flex:1;min-height:0}.artifact-open-btn{color:#1e1e68;cursor:pointer;letter-spacing:.2px;background:#1e1e680d;border:1px solid #1e1e6833;border-radius:20px;align-self:flex-start;align-items:center;gap:5px;padding:5px 10px 5px 8px;font-size:11px;font-weight:500;line-height:1;display:inline-flex}.artifact-open-btn:hover{background:#1e1e681a}