@import"https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap";:root{--accent: #ff3a3a;--accent-glow: rgba(255,58,58,.15);--accent-hover: #e02020;--bg: #09090b;--surface: #111114;--surface2: #18181c;--surface3: #222228;--border: #27272e;--border-light: #333340;--text: #f0f0f5;--text-dim: #9090a8;--text-muted: #505068;--radius: 10px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Outfit,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;overflow:hidden;height:100vh;height:100dvh}#root{height:100%}.loading-screen{height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg)}.loading-pulse{width:40px;height:40px;border-radius:50%;background:var(--accent);animation:pulse 1s ease infinite}@keyframes pulse{0%,to{transform:scale(1);opacity:1}50%{transform:scale(1.3);opacity:.4}}.auth-screen{height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;background:var(--bg);background-image:radial-gradient(ellipse at 20% 50%,rgba(255,58,58,.04) 0%,transparent 70%),radial-gradient(ellipse at 80% 50%,rgba(255,58,58,.03) 0%,transparent 70%)}.auth-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:44px 40px;width:100%;max-width:400px;animation:fadeUp .4s ease}.auth-logo{width:48px;height:48px;background:var(--accent);border-radius:12px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:24px;color:#fff;margin-bottom:24px}.auth-card h1{font-size:26px;font-weight:700;letter-spacing:-.5px;margin-bottom:6px}.auth-subtitle{color:var(--text-dim);font-size:14px;margin-bottom:28px}.auth-error{background:#ff3a3a1a;border:1px solid rgba(255,58,58,.25);color:#f88;padding:10px 14px;border-radius:8px;font-size:13px;margin-bottom:16px}.field{margin-bottom:18px}.field label{display:block;font-size:12px;font-weight:600;color:var(--text-dim);margin-bottom:6px;text-transform:uppercase;letter-spacing:.5px}.field input{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:13px 14px;color:var(--text);font-family:Outfit,sans-serif;font-size:15px;outline:none;transition:border-color .2s,box-shadow .2s}.field input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}.auth-btn{width:100%;background:var(--accent);color:#fff;border:none;border-radius:8px;padding:14px;font-family:Outfit,sans-serif;font-size:15px;font-weight:600;cursor:pointer;transition:background .2s,transform .1s;margin-top:4px}.auth-btn:hover{background:var(--accent-hover)}.auth-btn:active{transform:scale(.98)}.auth-btn:disabled{opacity:.5;cursor:not-allowed}.auth-toggle{text-align:center;margin-top:24px;font-size:14px;color:var(--text-dim)}.auth-toggle a{color:var(--accent);cursor:pointer;font-weight:500}.app-layout{display:flex;height:100vh;height:100dvh}.main-content{flex:1;display:flex;flex-direction:column;min-width:0;height:100%}.nav-overlay{position:fixed;inset:0;background:#0009;z-index:90;animation:fadeIn .2s ease}.nav-sidebar{position:fixed;left:0;top:0;bottom:0;width:260px;background:var(--surface);border-right:1px solid var(--border);z-index:100;display:flex;flex-direction:column;transform:translate(-100%);transition:transform .25s cubic-bezier(.4,0,.2,1)}.nav-sidebar.open{transform:translate(0)}.nav-brand{padding:20px;display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--border)}.nav-logo{width:36px;height:36px;background:var(--accent);border-radius:9px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;color:#fff;flex-shrink:0}.nav-title{font-weight:700;font-size:17px;letter-spacing:-.3px}.nav-links{flex:1;padding:12px 10px;display:flex;flex-direction:column;gap:2px}.nav-link{display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:8px;border:none;background:none;color:var(--text-dim);font-family:Outfit,sans-serif;font-size:14px;font-weight:500;cursor:pointer;transition:all .15s;width:100%;text-align:left}.nav-link:hover{background:var(--surface2);color:var(--text)}.nav-link.active{background:var(--accent-glow);color:var(--accent)}.nav-footer{padding:12px 10px;border-top:1px solid var(--border)}.nav-link.logout:hover{color:var(--accent)}.chat-header,.page-header{display:flex;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid var(--border);background:var(--surface);flex-shrink:0}.page-header h1{font-size:18px;font-weight:700;letter-spacing:-.3px}.menu-btn{width:38px;height:38px;display:flex;align-items:center;justify-content:center;border:1px solid var(--border);border-radius:8px;background:none;color:var(--text-dim);cursor:pointer;flex-shrink:0}.menu-btn:hover{color:var(--text);border-color:var(--border-light)}.source-toggle{display:flex;background:var(--bg);border:1px solid var(--border);border-radius:8px;overflow:hidden;flex-shrink:0}.source-btn{padding:7px 14px;border:none;background:none;color:var(--text-muted);font-family:Outfit,sans-serif;font-size:12px;font-weight:600;cursor:pointer;text-transform:uppercase;letter-spacing:.5px}.source-btn:not(:last-child){border-right:1px solid var(--border)}.source-btn.active{background:var(--accent);color:#fff}.source-btn:hover:not(.active){color:var(--text-dim)}.usage-pill{margin-left:auto;font-family:JetBrains Mono,monospace;font-size:11px;color:var(--text-muted);background:var(--surface2);border:1px solid var(--border);padding:5px 10px;border-radius:20px;flex-shrink:0}.welcome{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 20px;text-align:center;animation:fadeUp .5s ease}.welcome-logo{width:64px;height:64px;background:var(--accent);border-radius:16px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:32px;color:#fff;margin-bottom:24px;box-shadow:0 0 40px var(--accent-glow)}.welcome h2{font-size:28px;font-weight:700;letter-spacing:-.5px;margin-bottom:8px}.welcome p{color:var(--text-dim);font-size:15px;max-width:460px;line-height:1.6;margin-bottom:36px}.suggestions{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;max-width:620px}.suggestion{background:var(--surface);border:1px solid var(--border);padding:10px 16px;border-radius:10px;font-family:Outfit,sans-serif;font-size:13px;color:var(--text-dim);cursor:pointer;transition:all .2s}.suggestion:hover{border-color:var(--accent);color:var(--text);box-shadow:0 0 12px var(--accent-glow)}.messages{flex:1;overflow-y:auto;padding:24px 20px;display:flex;flex-direction:column;gap:24px;scroll-behavior:smooth}.messages::-webkit-scrollbar{width:5px}.messages::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.msg{animation:fadeUp .3s ease;max-width:800px}.msg.user{align-self:flex-end;max-width:70%}.msg-body.user{background:var(--accent);color:#fff;padding:12px 16px;border-radius:16px 16px 4px;font-size:15px;line-height:1.5}.msg.assistant{align-self:flex-start;width:100%}.msg-header{display:flex;align-items:center;gap:10px;margin-bottom:8px}.msg-avatar{width:28px;height:28px;background:var(--accent);border-radius:7px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:13px;color:#fff;flex-shrink:0}.bookmark-btn{margin-left:auto;background:none;border:none;color:var(--text-muted);cursor:pointer;padding:4px;border-radius:4px;opacity:0}.msg:hover .bookmark-btn{opacity:1}.bookmark-btn:hover,.bookmark-btn.active{color:var(--accent)}.msg-body.assistant{background:var(--surface);border:1px solid var(--border);padding:18px 22px;border-radius:4px 14px 14px;font-size:15px;line-height:1.75}.msg-body.assistant p{margin-bottom:12px}.msg-body.assistant p:last-child{margin-bottom:0}.msg-body.assistant strong{color:var(--accent);font-weight:600}.sources-bar{margin-top:12px;padding-top:12px;border-top:1px solid var(--border);display:flex;flex-wrap:wrap;align-items:center;gap:6px}.sources-label{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:var(--text-muted)}.source-chip{font-size:11px;color:var(--text-dim);background:var(--surface2);border:1px solid var(--border);padding:3px 9px;border-radius:4px}.typing{display:flex;gap:5px;padding:12px 0}.typing span{width:7px;height:7px;background:var(--text-muted);border-radius:50%;animation:bounce .6s infinite alternate}.typing span:nth-child(2){animation-delay:.2s}.typing span:nth-child(3){animation-delay:.4s}.input-area{padding:14px 16px 18px;border-top:1px solid var(--border);background:var(--surface);flex-shrink:0}.input-row{display:flex;gap:10px;max-width:800px;margin:0 auto;align-items:flex-end}.input-row textarea{flex:1;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:13px 16px;color:var(--text);font-family:Outfit,sans-serif;font-size:15px;resize:none;min-height:48px;max-height:120px;line-height:1.4;outline:none;transition:border-color .2s,box-shadow .2s}.input-row textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}.input-row textarea::placeholder{color:var(--text-muted)}.send-btn{width:48px;height:48px;background:var(--accent);border:none;border-radius:var(--radius);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0}.send-btn:hover{background:var(--accent-hover)}.send-btn:active{transform:scale(.95)}.send-btn:disabled{opacity:.3;cursor:not-allowed}.page-body{flex:1;overflow-y:auto;padding:16px}.page-loading{height:200px;display:flex;align-items:center;justify-content:center}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;height:300px;color:var(--text-muted);gap:12px;font-size:14px}.history-list{display:flex;flex-direction:column;gap:6px;max-width:800px;margin:0 auto}.history-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;cursor:pointer}.history-item:hover{border-color:var(--border-light)}.history-item-header{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;gap:12px}.history-question{font-size:14px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}.history-time{font-family:JetBrains Mono,monospace;font-size:11px;color:var(--text-muted);flex-shrink:0}.history-answer{padding:14px 18px 18px;font-size:14px;line-height:1.7;color:var(--text-dim);border-top:1px solid var(--border);animation:fadeIn .2s ease}.history-answer strong{color:var(--accent)}.bookmark-remove{background:none;border:none;color:var(--accent);cursor:pointer;padding:4px;flex-shrink:0;opacity:.6}.bookmark-remove:hover{opacity:1}@keyframes fadeUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes bounce{to{transform:translateY(-4px)}}@media(max-width:640px){.chat-header{padding:10px 12px}.source-btn{padding:6px 10px;font-size:11px}.messages{padding:16px 12px}.msg.user{max-width:85%}.msg-body.assistant{padding:14px 16px}.input-area{padding:10px 12px 14px}.auth-card{padding:32px 24px}.suggestions{flex-direction:column}.welcome h2{font-size:22px}.welcome-logo{width:52px;height:52px;font-size:26px}}