@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";
:root{--primary:#6366f1;--primary-dark:#4f46e5;--primary-light:#818cf8;--primary-glow:#6366f10d;--primary-glow-strong:#6366f11a;--cyan:#22d3ee;--cyan-dark:#06b6d4;--cyan-light:#67e8f9;--cyan-glow:#22d3ee1f;--bg:#fafbfc;--bg-card:#fff;--bg-chat:#f4f5f7;--bg-dark:#0d0d0d;--bg-sidebar:#fff;--text-primary:#0f172a;--text-secondary:#475569;--text-muted:#94a3b8;--text-on-primary:#fff;--border:#e5e7eb;--border-light:#f1f5f9;--border-focus:var(--primary);--shadow-sm:0 1px 2px #00000008;--shadow-md:0 4px 6px -1px #0000000d;--shadow-lg:0 10px 15px -3px #0000000d;--shadow-glow:none;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:20px;--radius-full:9999px;--transition-fast:.15s cubic-bezier(.4,0,.2,1);--transition-normal:.25s cubic-bezier(.4,0,.2,1);--transition-slow:.4s cubic-bezier(.4,0,.2,1);--font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:16px}body{font-family:var(--font-family);background:var(--bg);color:var(--text-primary);min-height:100vh;line-height:1.6}.app-layout{width:100vw;height:100vh;display:flex;overflow:hidden}.sidebar{background:var(--bg-card);border-right:1px solid var(--border);flex-direction:column;width:340px;min-width:340px;height:100vh;display:flex;overflow:hidden}.sidebar-header{border-bottom:1px solid var(--border-light);padding:24px 24px 20px}.sidebar-content{flex:1;padding:20px 24px;overflow-y:auto}.sidebar-footer{border-top:1px solid var(--border-light);padding:16px 24px}.brand{align-items:center;gap:12px;display:flex}.brand-icon{background:var(--primary);border-radius:var(--radius-md);color:#fff;justify-content:center;align-items:center;width:42px;height:42px;font-size:18px;font-weight:700;display:flex}.brand-text h1{color:var(--text-primary);font-size:18px;font-weight:700;line-height:1.2}.brand-text p{color:var(--text-secondary);margin-top:2px;font-size:12px;font-weight:400}.upload-section{margin-bottom:24px}.upload-section h3{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;margin-bottom:12px;font-size:13px;font-weight:600}.upload-zone{border:2px dashed var(--border);border-radius:var(--radius-md);text-align:center;cursor:pointer;transition:all var(--transition-normal);background:var(--bg);padding:28px 20px;position:relative;overflow:hidden}.upload-zone:before{content:"";background:linear-gradient(135deg,var(--primary-glow),transparent);opacity:0;transition:opacity var(--transition-normal);position:absolute;inset:0}.upload-zone:hover{border-color:var(--primary);background:var(--primary-glow);box-shadow:var(--shadow-md);transform:translateY(-1px)}.upload-zone:hover:before{opacity:1}.upload-zone.dragging{border-color:var(--primary);background:var(--primary-glow-strong);transform:scale(1.01)}.upload-zone.uploading{pointer-events:none;opacity:.7}.upload-icon{z-index:1;margin-bottom:10px;font-size:32px;position:relative}.upload-text{color:var(--text-primary);z-index:1;font-size:14px;font-weight:500;position:relative}.upload-hint{color:var(--text-muted);z-index:1;margin-top:6px;font-size:12px;position:relative}.upload-progress{z-index:1;margin-top:16px;position:relative}.progress-bar{background:var(--border);border-radius:var(--radius-full);width:100%;height:4px;overflow:hidden}.progress-fill{background:linear-gradient(90deg,var(--primary),var(--primary-light));border-radius:var(--radius-full);height:100%;transition:width var(--transition-normal);animation:1.5s ease-in-out infinite progressPulse}@keyframes progressPulse{0%,to{opacity:1}50%{opacity:.7}}.progress-text{color:var(--text-secondary);margin-top:8px;font-size:12px}.upload-status{border-radius:var(--radius-sm);animation:slideIn var(--transition-normal)ease-out;align-items:center;gap:10px;margin-top:12px;padding:12px 16px;font-size:13px;font-weight:500;display:flex}@keyframes slideIn{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.upload-status.success{color:#065f46;background:#ecfdf5;border:1px solid #a7f3d0}.upload-status.error{color:#991b1b;background:#fef2f2;border:1px solid #fecaca}.uploaded-files{margin-top:20px}.uploaded-files h3{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;margin-bottom:10px;font-size:13px;font-weight:600}.file-item{background:var(--bg);border-radius:var(--radius-sm);border:1px solid var(--border-light);transition:all var(--transition-fast);align-items:center;gap:10px;margin-bottom:8px;padding:10px 12px;font-size:13px;display:flex}.file-item:hover{border-color:var(--border);box-shadow:var(--shadow-sm)}.file-icon{font-size:18px}.file-name{color:var(--text-primary);text-overflow:ellipsis;white-space:nowrap;flex:1;font-weight:500;overflow:hidden}.file-chunks{color:var(--text-muted);white-space:nowrap;font-size:11px}.kb-stats{gap:12px;margin-top:16px;display:flex}.stat-card{background:var(--bg);border-radius:var(--radius-sm);border:1px solid var(--border-light);text-align:center;flex:1;padding:14px}.stat-value{color:var(--primary);font-size:22px;font-weight:700;line-height:1}.stat-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.3px;margin-top:4px;font-size:11px}.reset-btn{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-card);width:100%;color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);font-size:13px;font-weight:500;font-family:var(--font-family);padding:10px}.reset-btn:hover{color:#dc2626;background:#fef2f2;border-color:#fca5a5}.main-area{background:var(--bg);flex-direction:column;flex:1;height:100vh;display:flex;overflow:hidden}.chat-header{border-bottom:1px solid var(--border);background:var(--bg-card);justify-content:space-between;align-items:center;padding:16px 28px;display:flex}.chat-header-left{align-items:center;gap:10px;display:flex}.status-dot{background:#10b981;border-radius:50%;width:8px;height:8px;animation:2s ease-in-out infinite pulse}@keyframes pulse{0%,to{opacity:1;box-shadow:0 0 #10b98166}50%{opacity:.8;box-shadow:0 0 0 6px #10b98100}}.chat-header-title{color:var(--text-primary);font-size:15px;font-weight:600}.chat-header-subtitle{color:var(--text-muted);font-size:12px}.messages-container{scroll-behavior:smooth;flex-direction:column;flex:1;gap:20px;padding:28px;display:flex;overflow-y:auto}.messages-container::-webkit-scrollbar{width:6px}.messages-container::-webkit-scrollbar-track{background:0 0}.messages-container::-webkit-scrollbar-thumb{background:var(--border);border-radius:var(--radius-full)}.welcome-container{text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;padding:40px 20px;display:flex}.welcome-icon{background:linear-gradient(135deg,var(--primary-glow),var(--cyan-glow));border-radius:var(--radius-xl);justify-content:center;align-items:center;width:72px;height:72px;margin-bottom:20px;font-size:34px;animation:3s ease-in-out infinite float;display:flex}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}.welcome-title{color:var(--text-primary);margin-bottom:8px;font-size:22px;font-weight:700}.welcome-subtitle{color:var(--text-secondary);max-width:380px;font-size:14px;line-height:1.6}.suggested-questions{flex-wrap:wrap;justify-content:center;gap:8px;max-width:560px;margin-top:24px;display:flex}.suggested-btn{border:1px solid var(--border);border-radius:var(--radius-full);background:var(--bg-card);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);font-size:13px;font-weight:450;font-family:var(--font-family);padding:8px 16px}.suggested-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-glow);box-shadow:var(--shadow-sm);transform:translateY(-1px)}.message{max-width:75%;animation:messageIn var(--transition-normal)ease-out;gap:12px;display:flex}@keyframes messageIn{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.message.user{flex-direction:row-reverse;align-self:flex-end}.message.bot{align-self:flex-start}.message-avatar{border-radius:var(--radius-sm);flex-shrink:0;justify-content:center;align-items:center;width:34px;height:34px;font-size:16px;display:flex}.message.user .message-avatar{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff}.message.bot .message-avatar{background:linear-gradient(135deg,var(--cyan-glow),var(--primary-glow))}.message-bubble{border-radius:var(--radius-md);word-wrap:break-word;padding:14px 18px;font-size:14px;line-height:1.65}.message.user .message-bubble{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:var(--text-on-primary);border-bottom-right-radius:4px}.message.bot .message-bubble{background:var(--bg-card);color:var(--text-primary);border:1px solid var(--border);box-shadow:var(--shadow-sm);border-bottom-left-radius:4px}.message.bot .message-bubble p{margin-bottom:8px}.message.bot .message-bubble p:last-child{margin-bottom:0}.message.bot .message-bubble ul,.message.bot .message-bubble ol{margin:8px 0;padding-left:20px}.message.bot .message-bubble li{margin-bottom:4px}.message.bot .message-bubble strong{font-weight:600}.message.bot .message-bubble code{background:var(--bg-chat);border-radius:4px;padding:2px 6px;font-size:13px}.thinking{max-width:75%;animation:messageIn var(--transition-normal)ease-out;align-self:flex-start;gap:12px;display:flex}.thinking-bubble{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);border-bottom-left-radius:4px;align-items:center;gap:10px;padding:14px 20px;display:flex}.thinking-dots{gap:4px;display:flex}.thinking-dots span{background:var(--primary);border-radius:50%;width:7px;height:7px;animation:1.4s ease-in-out infinite bounce}.thinking-dots span:nth-child(2){animation-delay:.2s}.thinking-dots span:nth-child(3){animation-delay:.4s}@keyframes bounce{0%,80%,to{opacity:.4;transform:scale(.6)}40%{opacity:1;transform:scale(1)}}.thinking-text{color:var(--text-muted);font-size:13px;font-weight:450}.input-area{border-top:1px solid var(--border);background:var(--bg-card);padding:18px 28px 24px}.input-wrapper{background:var(--bg);border:2px solid var(--border);border-radius:var(--radius-md);transition:all var(--transition-fast);align-items:flex-end;gap:12px;padding:4px 4px 4px 18px;display:flex}.input-wrapper:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}.input-wrapper textarea{font-family:var(--font-family);color:var(--text-primary);resize:none;background:0 0;border:none;outline:none;flex:1;min-height:44px;max-height:120px;padding:10px 0;font-size:14px;line-height:1.5}.input-wrapper 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16px}.welcome-title{font-size:18px}}.sr-only{clip:rect(0,0,0,0);border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.message-content-wrapper{flex-direction:column;gap:8px;min-width:0;max-width:100%;display:flex}.citation-chips{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.citation-chip{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-full);color:var(--text-secondary);transition:all var(--transition-fast);white-space:nowrap;align-items:center;gap:5px;padding:4px 10px;font-size:11px;font-weight:500;display:inline-flex}.citation-chip:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-glow)}.chip-node{color:var(--text-muted);font-size:10px;font-weight:400}.view-sources-btn{border:1px solid var(--primary);border-radius:var(--radius-full);color:var(--primary);cursor:pointer;transition:all 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var(--transition-fast);padding:16px}.source-node:hover{border-color:var(--border);box-shadow:var(--shadow-sm)}.source-node-header{align-items:center;gap:8px;margin-bottom:8px;display:flex}.source-node-icon{font-size:18px}.source-node-title{color:var(--text-primary);font-size:14px;font-weight:600}.source-node-meta{gap:12px;margin-bottom:8px;display:flex}.source-node-id{color:var(--primary);background:var(--primary-glow);border-radius:var(--radius-full);padding:2px 8px;font-size:11px;font-weight:600}.source-node-pages{color:var(--text-muted);font-size:11px;font-weight:500}.source-node-summary{color:var(--text-secondary);margin-bottom:6px;font-size:13px;line-height:1.5}.source-node-file{color:var(--text-muted);font-size:11px}@keyframes blink{0%,to{opacity:1}50%{opacity:0}}.streaming-cursor:after{content:"▍";color:var(--primary);animation:.8s step-end infinite 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var(--border-light);border-bottom:1px solid var(--border-light);padding:60px 24px}.landing-providers-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:1.5px;margin-bottom:28px;font-size:13px;font-weight:600}.landing-providers-logos{flex-wrap:wrap;justify-content:center;align-items:center;gap:40px;display:flex}.landing-provider-item{color:var(--text-secondary);opacity:.7;transition:all var(--transition-fast);align-items:center;gap:10px;font-size:18px;font-weight:700;display:flex}.landing-provider-item:hover{opacity:1;color:var(--text-primary)}.landing-provider-item span.provider-icon{font-size:28px}.landing-bottom-cta{text-align:center;background:linear-gradient(180deg,white 0%,var(--bg)100%);padding:100px 24px}.landing-bottom-cta h2{color:var(--text-primary);letter-spacing:-.5px;margin-bottom:16px;font-size:clamp(28px,4vw,42px);font-weight:800}.landing-bottom-cta p{color:var(--text-secondary);max-width:500px;margin-bottom:36px;margin-left:auto;margin-right:auto;font-size:18px}.landing-footer-dark{color:#fff;background-color:#0f172a;margin-top:auto;padding:48px}.landing-footer-content{flex-direction:column;align-items:center;gap:24px;max-width:1200px;margin:0 auto;display:flex}.landing-footer-brand{margin-bottom:8px}.landing-footer-links{color:#fffc;gap:32px;font-size:14px;font-weight:500;display:flex}.landing-footer-links a{color:inherit;text-decoration:none;transition:color .2s}.landing-footer-links a:hover{color:#fff}.landing-footer-copy{color:#ffffff80;margin-top:16px;font-size:13px}@media (max-width:768px){.landing-nav{padding:16px 20px}.landing-hero{padding:60px 20px 40px}.landing-steps{grid-template-columns:repeat(2,1fr);gap:24px}.landing-features{grid-template-columns:1fr}.landing-providers-logos{gap:24px}}@media (max-width:480px){.landing-steps{grid-template-columns:1fr}.landing-cta-group{flex-direction:column}}.chat-widget-fab{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;cursor:pointer;z-index:1000;width:60px;height:60px;transition:all var(--transition-normal);border:none;border-radius:50%;justify-content:center;align-items:center;display:flex;position:fixed;bottom:24px;right:24px;box-shadow:0 8px 24px #df005066}.chat-widget-fab:hover{transform:scale(1.05)}.chat-widget-fab.open{color:var(--text-primary);box-shadow:var(--shadow-md);background:#fff}.chat-widget-badge{color:#fff;background:#10b981;border:2px solid #fff;border-radius:10px;justify-content:center;align-items:center;min-width:20px;height:20px;padding:0 6px;font-size:11px;font-weight:700;display:flex;position:absolute;top:-4px;right:-4px}.chat-widget-popup{background:var(--bg-card);border-radius:var(--radius-lg);z-index:999;border:1px solid var(--border);width:380px;max-width:calc(100vw - 48px);height:600px;max-height:calc(100vh - 120px);animation:slideUp var(--transition-fast)ease-out;flex-direction:column;display:flex;position:fixed;bottom:100px;right:24px;overflow:hidden;box-shadow:0 12px 40px #00000026}.chat-widget-header{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.chat-widget-header-left{align-items:center;gap:12px;display:flex}.chat-widget-avatar{color:var(--primary);border-radius:var(--radius-sm);background:#fff;justify-content:center;align-items:center;width:36px;height:36px;font-size:14px;font-weight:700;display:flex}.chat-widget-title{font-size:15px;font-weight:600}.chat-widget-status{opacity:.9;align-items:center;gap:6px;font-size:12px;display:flex}.chat-widget-status-dot{background:#10b981;border-radius:50%;width:6px;height:6px}.chat-widget-close{color:#fff;cursor:pointer;opacity:.8;transition:all var(--transition-fast);background:0 0;border:none;border-radius:4px;padding:4px;display:flex}.chat-widget-close:hover{opacity:1;background:#ffffff1a}.chat-widget-messages{background:var(--bg);flex-direction:column;flex:1;gap:16px;padding:20px;display:flex;overflow-y:auto}.chat-widget-msg{gap:10px;max-width:85%;display:flex}.chat-widget-msg.user{flex-direction:row-reverse;align-self:flex-end}.chat-widget-msg.bot{align-self:flex-start}.chat-widget-msg-avatar{border-radius:var(--radius-sm);background:var(--primary-glow);width:28px;height:28px;color:var(--primary);flex-shrink:0;justify-content:center;align-items:center;display:flex}.chat-widget-msg-bubble{border-radius:var(--radius-md);word-wrap:break-word;padding:12px 16px;font-size:14px;line-height:1.5}.chat-widget-msg.user .chat-widget-msg-bubble{background:var(--text-primary);color:#fff;border-bottom-right-radius:4px}.chat-widget-msg.bot .chat-widget-msg-bubble{color:#1f2937;border:1px solid var(--border);box-shadow:var(--shadow-sm);background:#fff;border-bottom-left-radius:4px}.chat-widget-msg.bot .chat-widget-msg-bubble ul{margin:6px 0;padding-left:20px}.chat-widget-email-form{border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);background:#fff;margin-top:8px;padding:16px}.chat-widget-email-label{color:var(--text-primary);margin-bottom:8px;font-size:13px;font-weight:500}.chat-widget-email-input-row{gap:8px;display:flex}.chat-widget-email-input{border:1px solid var(--border);border-radius:var(--radius-sm);outline:none;flex:1;padding:8px 12px;font-size:13px}.chat-widget-email-input:focus{border-color:var(--primary)}.chat-widget-email-submit{background:var(--primary);color:#fff;border-radius:var(--radius-sm);cursor:pointer;border:none;justify-content:center;align-items:center;width:36px;display:flex}.chat-widget-thinking{gap:4px;display:flex;padding:14px 16px!important}.chat-widget-dot{background:var(--text-muted);border-radius:50%;width:6px;height:6px;animation:1s infinite widgetBounce}.chat-widget-dot:nth-child(2){animation-delay:.2s}.chat-widget-dot:nth-child(3){animation-delay:.4s}@keyframes widgetBounce{0%,to{transform:translateY(0)}50%{transform:translateY(-4px)}}.chat-widget-input-area{border-top:1px solid var(--border);background:#fff;padding:16px}.chat-widget-input-wrapper{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);align-items:flex-end;gap:8px;padding:4px;display:flex}.chat-widget-input-wrapper:focus-within{border-color:var(--primary)}.chat-widget-input-wrapper textarea{resize:none;background:0 0;border:none;outline:none;flex:1;max-height:100px;padding:8px 12px;font-family:inherit;font-size:14px}.chat-widget-send{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:4px;justify-content:center;align-items:center;width:32px;height:32px;margin:2px;display:flex}.chat-widget-send:disabled{opacity:.5;background:var(--text-muted)}.chat-widget-powered{text-align:center;color:var(--text-muted);margin-top:12px;font-size:11px}@media (max-width:480px){.chat-widget-popup{border-radius:0;width:100vw;max-width:100vw;height:100vh;max-height:100vh;bottom:0;right:0}}