*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:#212121;color:#ececec;height:100vh;overflow:hidden}#root{height:100vh;display:flex}.layout{display:flex;width:100%;height:100vh}.sidebar{width:260px;min-width:260px;background:#171717;display:flex;flex-direction:column;padding:.75rem .5rem;overflow-y:auto;transition:transform .25s ease}.sidebar-top{padding:.25rem .5rem .75rem;display:flex;flex-direction:column;gap:.5rem}.sidebar-brand{display:flex;align-items:center;gap:.6rem;padding:.5rem}.sidebar-brand .brand-icon{display:flex;align-items:center;justify-content:center;color:#8e8ea0}.sidebar-brand-text h2{font-size:.9rem;font-weight:600;color:#ececec}.sidebar-brand-text p{font-size:.68rem;color:#8e8ea0}.new-chat-btn{display:flex;align-items:center;gap:.5rem;width:100%;padding:.6rem .75rem;background:transparent;border:1px solid #3A3A3A;border-radius:10px;color:#ececec;font-size:.82rem;font-family:inherit;cursor:pointer;transition:background .12s}.new-chat-btn:hover{background:#2a2a2a}.sidebar-divider{border:none;border-top:1px solid #2A2A2A;margin:.25rem .5rem}.sidebar-section{padding:0 .25rem}.sidebar-section h3{font-size:.65rem;font-weight:500;color:#666;text-transform:uppercase;letter-spacing:.08em;padding:.4rem .5rem .5rem}.suggestion-btn{display:flex;align-items:flex-start;gap:.5rem;width:100%;background:transparent;border:none;border-radius:8px;padding:.55rem .75rem;color:#b4b4b4;font-size:.78rem;font-family:inherit;text-align:left;cursor:pointer;line-height:1.4;transition:background .1s,color .1s}.suggestion-btn svg{margin-top:1px}.suggestion-btn:hover:not(:disabled){background:#2a2a2a;color:#ececec}.suggestion-btn:disabled{opacity:.4;cursor:not-allowed}.sidebar-footer{margin-top:auto;padding:.75rem 1rem;font-size:.65rem;color:#3a3a3a;text-align:center;border-top:1px solid #2A2A2A}.sidebar-backdrop{display:none;position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;z-index:9;animation:fadeIn .2s ease}.chat-area{flex:1;display:flex;flex-direction:column;background:#212121;min-width:0;position:relative}.chat-header{padding:.85rem 1.5rem;display:flex;align-items:center;gap:.75rem;border-bottom:1px solid #2A2A2A;flex-shrink:0}.chat-header h1{font-size:.9rem;font-weight:500;color:#ececec}.sidebar-toggle{display:none;background:transparent;border:none;color:#8e8ea0;cursor:pointer;padding:.3rem;border-radius:6px;align-items:center;justify-content:center;transition:color .12s,background .12s}.sidebar-toggle:hover{color:#ececec;background:#2a2a2a}.messages{flex:1;overflow-y:auto;padding:1rem 0 .5rem;display:flex;flex-direction:column}.messages::-webkit-scrollbar{width:5px}.messages::-webkit-scrollbar-track{background:transparent}.messages::-webkit-scrollbar-thumb{background:#333;border-radius:3px}.scroll-bottom-btn{position:absolute;bottom:100px;right:1.5rem;width:34px;height:34px;background:#2f2f2f;border:1px solid #444;border-radius:50%;color:#ececec;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px #0006;transition:background .12s,transform .12s;animation:fadeIn .15s ease;z-index:5}.scroll-bottom-btn:hover{background:#3a3a3a;transform:translateY(-1px)}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:2rem 1.5rem 1rem;gap:1.5rem}.empty-logo{width:56px;height:56px;background:linear-gradient(135deg,#1d4ed8,#7c3aed);border-radius:16px;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 20px #6366f14d}.empty-state h2{font-size:1.4rem;font-weight:600;color:#ececec;text-align:center}.suggestion-cards{display:grid;grid-template-columns:1fr 1fr;gap:.75rem;width:100%;max-width:600px}.suggestion-card{background:#2a2a2a;border:1px solid #333;border-radius:12px;padding:.9rem 1rem;cursor:pointer;transition:all .15s;text-align:left;font-family:inherit;color:#c5c5d2;font-size:.82rem;line-height:1.45}.suggestion-card:hover:not(:disabled){background:#333;border-color:#555;color:#ececec;transform:translateY(-1px)}.suggestion-card:disabled{opacity:.5;cursor:not-allowed}.suggestion-card .card-icon{margin-bottom:.4rem;display:flex;align-items:center;color:#8e8ea0}.message-row{display:flex;padding:.6rem 1.5rem;gap:.75rem;animation:fadeSlideIn .2s ease-out}@keyframes fadeSlideIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.message-row.user{flex-direction:row-reverse;justify-content:flex-start}.message-row.assistant{flex-direction:row;align-items:flex-start}.avatar{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:2px}.avatar.assistant{background:linear-gradient(135deg,#1d4ed8,#7c3aed)}.avatar.user{background:#3a3a3a}.message-content{display:flex;flex-direction:column;max-width:min(680px,calc(100% - 80px));position:relative}.message-row.user .message-content{align-items:flex-end}.message-bubble{padding:.7rem 1rem;border-radius:14px;font-size:.9rem;line-height:1.7;word-break:break-word}.message-row.user .message-bubble{background:#2f2f2f;color:#ececec;border-bottom-right-radius:4px;white-space:pre-wrap}.message-row.assistant .message-bubble{background:transparent;color:#ececec;padding-left:0;padding-right:0}.plain-text{white-space:pre-wrap}.cursor{display:inline-block;animation:blink .6s step-end infinite;color:#60a5fa;margin-left:1px;font-size:.85em;vertical-align:middle}@keyframes blink{0%,to{opacity:1}50%{opacity:0}}.message-bubble p{margin-bottom:.6em}.message-bubble p:first-child{margin-top:0}.message-bubble p:last-child{margin-bottom:0}.message-bubble ul,.message-bubble ol{padding-left:1.4rem;margin:.4rem 0}.message-bubble li{margin-bottom:.25em}.message-bubble li>ul,.message-bubble li>ol{margin:.15em 0}.message-bubble h1,.message-bubble h2,.message-bubble h3,.message-bubble h4{font-weight:600;color:#ececec;line-height:1.3;margin:1em 0 .4em}.message-bubble h1:first-child,.message-bubble h2:first-child,.message-bubble h3:first-child{margin-top:0}.message-bubble h1{font-size:1.1em}.message-bubble h2{font-size:1em}.message-bubble h3{font-size:.95em}.message-bubble strong{font-weight:600;color:#f0f0f0}.message-bubble em{font-style:italic;color:#c5c5d2}.message-bubble code{background:#1e1e1e;border:1px solid #333;padding:.12em .35em;border-radius:4px;font-size:.85em;font-family:JetBrains Mono,Fira Code,Cascadia Code,monospace;color:#e06c75}.message-bubble pre{background:#1a1a1a;border:1px solid #2A2A2A;border-radius:10px;padding:1rem;overflow-x:auto;margin:.75rem 0}.message-bubble pre code{background:none;border:none;padding:0;font-size:.83rem;line-height:1.6;color:#abb2bf}.message-bubble blockquote{border-left:3px solid #444;padding-left:.75rem;color:#999;margin:.5rem 0}.message-bubble table{border-collapse:collapse;display:block;overflow-x:auto;margin:.75rem 0;font-size:.85em;max-width:100%}.message-bubble th,.message-bubble td{border:1px solid #3A3A3A;padding:.4rem .75rem;text-align:left;white-space:nowrap}.message-bubble th{background:#2a2a2a;font-weight:600}.message-bubble tr:nth-child(2n) td{background:#ffffff05}.message-bubble a{color:#60a5fa;text-decoration:underline}.message-bubble a:hover{color:#93c5fd}.message-bubble hr{border:none;border-top:1px solid #2A2A2A;margin:.75rem 0}.loading-dots{display:flex;gap:5px;padding:.6rem .2rem;align-items:center}.loading-dots span{width:6px;height:6px;background:#666;border-radius:50%;animation:dot-bounce 1.2s ease-in-out infinite}.loading-dots span:nth-child(2){animation-delay:.15s}.loading-dots span:nth-child(3){animation-delay:.3s}@keyframes dot-bounce{0%,80%,to{transform:translateY(0);opacity:.4}40%{transform:translateY(-5px);opacity:1}}.sources-panel{margin-top:.5rem}.sources-toggle{display:inline-flex;align-items:center;gap:.35rem;background:transparent;border:1px solid #2E2E2E;border-radius:6px;padding:.22rem .55rem;font-size:.7rem;color:#666;cursor:pointer;font-family:inherit;transition:all .12s}.sources-toggle:hover{border-color:#444;color:#999;background:#1e1e1e}.sources-list{margin-top:.4rem;display:flex;flex-direction:column;gap:.3rem;padding:.5rem .65rem;background:#1a1a1a;border:1px solid #2A2A2A;border-radius:8px}.source-item{display:flex;align-items:center;gap:.4rem;font-size:.72rem;color:#888}.source-item svg{opacity:.6}.source-item span{flex:1}.source-page{flex:none!important;background:#2a2a2a;border-radius:4px;padding:.08em .4em;color:#666;font-size:.68rem}.message-actions{display:flex;gap:.4rem;margin-top:.3rem;opacity:0;transition:opacity .15s}.message-content:hover .message-actions{opacity:1}.action-btn{display:inline-flex;align-items:center;background:transparent;border:1px solid #3A3A3A;border-radius:6px;padding:.2rem .5rem;font-size:.7rem;color:#8e8ea0;cursor:pointer;font-family:inherit;gap:.3rem;transition:all .12s}.action-btn:hover{background:#2a2a2a;color:#ececec;border-color:#555}.input-area{padding:.75rem 1.5rem 1.25rem;flex-shrink:0}.input-wrapper{max-width:720px;margin:0 auto;background:#2f2f2f;border-radius:14px;display:flex;align-items:flex-end;padding:.65rem .65rem .65rem 1.1rem;gap:.5rem;border:1px solid #3A3A3A;transition:border-color .15s,box-shadow .15s}.input-wrapper:focus-within{border-color:#555;box-shadow:0 0 0 1px #3a3a3a}.input-wrapper textarea{flex:1;background:transparent;border:none;outline:none;color:#ececec;font-family:inherit;font-size:.9rem;line-height:1.5;resize:none;max-height:150px;padding:.15rem 0}.input-wrapper textarea::placeholder{color:#555}.send-btn{width:34px;height:34px;background:#ececec;color:#212121;border:none;border-radius:9px;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all .12s}.send-btn:hover:not(:disabled){background:#fff;transform:scale(1.04)}.send-btn:disabled{background:#333;color:#555;cursor:not-allowed}.stop-btn{width:34px;height:34px;background:#3a3a3a;color:#ececec;border:1px solid #555;border-radius:9px;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all .12s}.stop-btn:hover{background:#444;border-color:#666}.input-hint{text-align:center;font-size:.65rem;color:#404040;margin-top:.45rem}@media (max-width: 768px){.sidebar-backdrop{display:block}.sidebar{position:fixed;top:0;left:0;bottom:0;z-index:10;transform:translate(-100%);width:280px;min-width:280px;box-shadow:4px 0 24px #00000080}.sidebar.open{transform:translate(0)}.sidebar-toggle{display:flex}.chat-header{padding:.75rem 1rem}.message-row{padding:.6rem 1rem}.message-content{max-width:calc(100% - 50px)}.empty-state{padding:1.5rem 1rem}.suggestion-cards{grid-template-columns:1fr;max-width:100%}.input-area{padding:.6rem 1rem 1rem}.scroll-bottom-btn{right:1rem;bottom:90px}}@media (max-width: 480px){.empty-state h2{font-size:1.1rem}.message-bubble{font-size:.85rem}.chat-header h1{font-size:.82rem}}