:root{--bg-primary: #0a0a0f;--bg-secondary: #111118;--bg-card: rgba(255,255,255,.04);--bg-card-hover: rgba(255,255,255,.07);--border: rgba(255,255,255,.08);--border-accent: rgba(139,92,246,.4);--accent-purple: #8b5cf6;--accent-cyan: #22d3ee;--accent-green: #34d399;--accent-red: #f87171;--text-primary: #f1f5f9;--text-secondary: #94a3b8;--text-muted: #475569;--radius-sm: 6px;--radius-md: 12px;--radius-lg: 18px;--radius-xl: 24px;--shadow-glow: 0 0 40px rgba(139,92,246,.15);--shadow-card: 0 4px 24px rgba(0,0,0,.4);--font-sans: "Inter", system-ui, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--sidebar-width: 280px;--header-height: 60px}[data-theme=light]{--bg-primary: #f8fafc;--bg-secondary: #f1f5f9;--bg-card: #ffffff;--bg-card-hover: #f8fafc;--border: #e2e8f0;--border-accent: #cbd5e1;--accent-purple: #7c3aed;--accent-cyan: #0891b2;--accent-green: #10b981;--accent-red: #ef4444;--text-primary: #0f172a;--text-secondary: #334155;--text-muted: #64748b;--shadow-glow: 0 4px 15px rgba(0, 0, 0, .05);--shadow-card: 0 4px 6px rgba(0, 0, 0, .05)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;-webkit-font-smoothing:antialiased}#root{min-height:100vh}.btn{display:inline-flex;align-items:center;gap:8px;border:none;border-radius:var(--radius-md);font-family:var(--font-sans);font-weight:500;cursor:pointer;transition:all .2s ease;text-decoration:none}.btn-primary{background:linear-gradient(135deg,var(--accent-purple),#6d28d9);color:#fff;padding:12px 28px;font-size:1rem;box-shadow:0 4px 20px #8b5cf659}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px #8b5cf680}.btn-ghost{background:transparent;color:var(--text-secondary);border:1px solid var(--border);padding:6px 14px;font-size:.85rem}.btn-ghost:hover{background:var(--bg-card);color:var(--text-primary)}.btn-sm{padding:6px 12px;font-size:.8rem}.btn-lg{padding:16px 36px;font-size:1.1rem;border-radius:var(--radius-lg)}.home-page{min-height:100vh;background:radial-gradient(ellipse at 50% 0%,rgba(139,92,246,.12) 0%,transparent 60%);padding:0 24px}.hero{max-width:820px;margin:0 auto;padding:120px 0 80px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:24px}.hero-badge{display:inline-block;background:#8b5cf626;border:1px solid var(--border-accent);color:var(--accent-purple);padding:6px 18px;border-radius:999px;font-size:.8rem;font-weight:500}.hero-title{font-size:clamp(2.4rem,6vw,4rem);font-weight:700;line-height:1.15;letter-spacing:-.03em}.hero-accent{background:linear-gradient(135deg,var(--accent-purple),var(--accent-cyan));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.hero-subtitle{font-size:1.15rem;color:var(--text-secondary);max-width:560px;line-height:1.7}.features{max-width:960px;margin:0 auto 80px;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px 24px;transition:all .2s ease}.feature-card:hover{background:var(--bg-card-hover);border-color:var(--border-accent);transform:translateY(-3px);box-shadow:var(--shadow-glow)}.feature-icon{font-size:2rem;margin-bottom:12px}.feature-card h3{font-size:1rem;font-weight:600;margin-bottom:8px}.feature-card p{font-size:.875rem;color:var(--text-secondary);line-height:1.6}.pipeline{max-width:960px;margin:0 auto 80px;text-align:center}.pipeline h2{font-size:1.5rem;font-weight:600;margin-bottom:32px}.pipeline-steps{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:0}.pipeline-step{display:flex;align-items:center;gap:0}.step-number{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--accent-purple),#6d28d9);display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700}.step-label{background:var(--bg-card);border:1px solid var(--border);padding:8px 16px;border-radius:var(--radius-md);font-size:.85rem;margin-left:8px}.step-arrow{color:var(--text-muted);font-size:1.2rem;padding:0 12px}.chat-page{display:flex;height:100vh;overflow:hidden}.sidebar{width:var(--sidebar-width);flex-shrink:0;background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden}.sidebar-header{padding:20px 20px 12px;border-bottom:1px solid var(--border)}.sidebar-title{font-size:1.1rem;font-weight:700;display:flex;align-items:center;gap:10px}.sidebar-logo{font-size:1.3rem}.sidebar-section{flex:1;overflow-y:auto;padding:12px 0}.sidebar-section-header{display:flex;align-items:center;justify-content:space-between;padding:8px 20px;font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted)}.sidebar-empty{padding:16px 20px;font-size:.82rem;color:var(--text-muted)}.sidebar-spinner{width:12px;height:12px;border:2px solid var(--border);border-top-color:var(--accent-purple);border-radius:50%;animation:spin .8s linear infinite}.doc-list{list-style:none;padding:0 8px}.doc-item{display:flex;align-items:center;gap:8px;padding:8px 12px;border-radius:var(--radius-sm);cursor:pointer;font-size:.84rem;color:var(--text-secondary);transition:all .15s ease;position:relative}.doc-item:hover{background:var(--bg-card);color:var(--text-primary)}.doc-item-active{background:#8b5cf626!important;color:var(--accent-purple)!important;border:1px solid rgba(139,92,246,.25)}.doc-icon{flex-shrink:0}.doc-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.doc-count{flex-shrink:0;background:var(--bg-card);border-radius:999px;padding:1px 7px;font-size:.7rem;color:var(--text-muted)}.doc-delete-btn{opacity:0;flex-shrink:0;background:none;border:none;cursor:pointer;font-size:.9rem;padding:2px;transition:opacity .15s}.doc-item:hover .doc-delete-btn{opacity:1}.upload-panel{margin:12px;border:2px dashed var(--border);border-radius:var(--radius-md);transition:all .2s ease;background:var(--bg-card)}.upload-panel:hover,.upload-active{border-color:var(--accent-purple);background:#8b5cf60f}.upload-done{border-color:var(--accent-green);background:#34d3990f}.upload-error{border-color:var(--accent-red);background:#f871710f}.upload-input-hidden{display:none}.upload-label{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px 16px;cursor:pointer;gap:6px;min-height:100px}.upload-icon{font-size:1.8rem}.upload-text{font-size:.85rem;font-weight:500;color:var(--text-primary);text-align:center}.upload-subtext{font-size:.75rem;color:var(--text-muted);text-align:center}.upload-spinner{width:22px;height:22px;border:2px solid var(--border);border-top-color:var(--accent-purple);border-radius:50%;animation:spin .7s linear infinite}.chat-main{flex:1;display:flex;flex-direction:column;min-width:0;overflow:hidden}.chat-header{height:var(--header-height);padding:0 24px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);background:var(--bg-secondary);flex-shrink:0}.chat-header-title{font-size:.95rem;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-header-meta{font-size:.75rem;color:var(--text-muted);margin-top:2px}.chat-header-info{display:flex;flex-direction:column;min-width:0}.chat-window{flex:1;display:flex;flex-direction:column;overflow:hidden}.message-list{flex:1;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:20px;scroll-behavior:smooth}.message-list::-webkit-scrollbar{width:6px}.message-list::-webkit-scrollbar-track{background:transparent}.message-list::-webkit-scrollbar-thumb{background:var(--border);border-radius:999px}.chat-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:12px;color:var(--text-secondary);padding:60px 24px}.chat-empty-icon{font-size:3rem}.chat-empty h3{font-size:1.1rem;font-weight:600;color:var(--text-primary)}.chat-empty p{font-size:.875rem;max-width:360px}.message-bubble{display:flex;gap:12px;max-width:860px;animation:fadeSlideUp .25s ease}.message-user{flex-direction:row-reverse;align-self:flex-end}.message-avatar{width:36px;height:36px;border-radius:50%;background:var(--bg-card);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:1rem;flex-shrink:0}.message-body{display:flex;flex-direction:column;gap:10px;min-width:0;max-width:720px}.message-content{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:14px 18px;font-size:.9rem;line-height:1.7}.message-user .message-content{background:linear-gradient(135deg,#8b5cf633,#6d28d926);border-color:#8b5cf64d}.message-latency{font-size:.7rem;color:var(--text-muted);align-self:flex-end}.typing-indicator{display:flex;align-items:center;gap:5px;padding:12px 18px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md)}.typing-indicator span{width:8px;height:8px;border-radius:50%;background:var(--accent-purple);opacity:.4;animation:pulse 1.2s ease-in-out infinite}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}.source-cards{display:flex;flex-direction:column;gap:8px}.source-card{background:#ffffff05;border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 14px;display:grid;grid-template-columns:auto 1fr auto;grid-template-rows:auto auto;gap:4px 10px;font-size:.8rem}.source-badge{grid-row:1;background:linear-gradient(135deg,var(--accent-purple),#6d28d9);color:#fff;font-size:.65rem;font-weight:700;padding:2px 7px;border-radius:999px;align-self:center}.source-name{grid-row:1;font-weight:600;color:var(--text-primary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.source-score{grid-row:1;color:var(--accent-cyan);font-weight:600;font-family:var(--font-mono);font-size:.75rem}.source-preview{grid-column:2 / 4;grid-row:2;color:var(--text-secondary);line-height:1.5}.citation-badge{display:inline-flex;align-items:center;gap:4px;background:#8b5cf626;border:1px solid rgba(139,92,246,.3);border-radius:999px;padding:1px 8px;margin:0 2px;font-size:.75rem;cursor:help;transition:all .15s ease;white-space:nowrap;vertical-align:middle}.citation-badge:hover{background:#8b5cf64d;border-color:var(--accent-purple)}.citation-number{font-weight:700;color:var(--accent-purple);font-family:var(--font-mono)}.citation-source{color:var(--text-secondary);max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.citation-unknown{color:var(--text-muted);font-family:var(--font-mono);font-size:.8rem}.chat-input-bar{display:flex;align-items:flex-end;gap:10px;padding:16px 24px;border-top:1px solid var(--border);background:var(--bg-secondary)}.chat-input{flex:1;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:12px 16px;color:var(--text-primary);font-family:var(--font-sans);font-size:.9rem;line-height:1.5;resize:none;max-height:160px;overflow-y:auto;transition:border-color .2s}.chat-input:focus{outline:none;border-color:var(--accent-purple)}.chat-input::placeholder{color:var(--text-muted)}.chat-input:disabled{opacity:.5}.chat-send-btn{width:44px;height:44px;border-radius:var(--radius-md);background:linear-gradient(135deg,var(--accent-purple),#6d28d9);color:#fff;border:none;cursor:pointer;font-size:1rem;display:flex;align-items:center;justify-content:center;transition:all .2s ease;flex-shrink:0}.chat-send-btn:hover:not(:disabled){transform:scale(1.05);box-shadow:0 4px 16px #8b5cf666}.chat-send-btn:disabled{opacity:.4;cursor:not-allowed}@keyframes fadeSlideUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pulse{0%,80%,to{opacity:.4;transform:scale(1)}40%{opacity:1;transform:scale(1.3)}}*{scrollbar-width:thin;scrollbar-color:var(--border) transparent}