:root{--bg-primary: #0a0e1a;--bg-secondary: #111827;--bg-tertiary: #1a2235;--bg-glass: rgba(17, 24, 39, .7);--bg-glass-hover: rgba(26, 34, 53, .85);--accent-blue: #3b82f6;--accent-blue-glow: rgba(59, 130, 246, .3);--accent-emerald: #10b981;--accent-emerald-glow: rgba(16, 185, 129, .2);--accent-purple: #8b5cf6;--accent-amber: #f59e0b;--accent-amber-glow: rgba(245, 158, 11, .15);--accent-red: #ef4444;--text-primary: #f1f5f9;--text-secondary: #94a3b8;--text-muted: #64748b;--text-accent: #93c5fd;--border-subtle: rgba(148, 163, 184, .12);--border-active: rgba(59, 130, 246, .4);--font-sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .3);--shadow-md: 0 4px 14px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 40px rgba(0, 0, 0, .5);--shadow-glow-blue: 0 0 20px rgba(59, 130, 246, .15);--shadow-glow-emerald: 0 0 20px rgba(16, 185, 129, .15);--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .4s cubic-bezier(.4, 0, .2, 1)}*,*: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;-moz-osx-font-smoothing:grayscale}body:before{content:"";position:fixed;top:0;left:0;right:0;bottom:0;background:radial-gradient(ellipse at 20% 0%,rgba(59,130,246,.08) 0%,transparent 50%),radial-gradient(ellipse at 80% 100%,rgba(139,92,246,.06) 0%,transparent 50%),radial-gradient(ellipse at 50% 50%,rgba(16,185,129,.04) 0%,transparent 60%);pointer-events:none;z-index:0}#root{position:relative;z-index:1;min-height:100vh}.glass-panel{background:var(--bg-glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);transition:all var(--transition-normal)}.glass-panel:hover{background:var(--bg-glass-hover);border-color:var(--border-active);box-shadow:var(--shadow-glow-blue)}.glass-panel-static{background:var(--bg-glass);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border:1px solid var(--border-subtle);border-radius:var(--radius-lg)}.app-container{display:grid;grid-template-columns:300px 1fr 340px;grid-template-rows:auto 1fr;gap:16px;padding:16px;min-height:100vh;max-width:1800px;margin:0 auto}.app-header{grid-column:1 / -1;display:flex;align-items:center;justify-content:space-between;padding:16px 24px}.app-header h1{font-size:1.4rem;font-weight:700;background:linear-gradient(135deg,var(--accent-blue),var(--accent-purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-.02em}.app-header .subtitle{font-size:.85rem;color:var(--text-muted);margin-left:12px}.sidebar-left{grid-column:1;display:flex;flex-direction:column;gap:16px;overflow-y:auto;max-height:calc(100vh - 100px)}.main-area{grid-column:2;display:flex;flex-direction:column;gap:16px;overflow-y:auto;max-height:calc(100vh - 100px)}.sidebar-right{grid-column:3;overflow-y:auto;max-height:calc(100vh - 100px)}.source-library{padding:20px}.source-library h2{font-size:.95rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.06em;margin-bottom:16px}.upload-zone{border:2px dashed var(--border-subtle);border-radius:var(--radius-md);padding:24px;text-align:center;cursor:pointer;transition:all var(--transition-normal);margin-bottom:16px}.upload-zone:hover,.upload-zone.drag-over{border-color:var(--accent-blue);background:#3b82f60d;box-shadow:var(--shadow-glow-blue)}.upload-zone .icon{font-size:2rem;margin-bottom:8px}.upload-zone p{font-size:.85rem;color:var(--text-muted)}.upload-zone .formats{font-size:.75rem;color:var(--text-muted);margin-top:4px;font-family:var(--font-mono)}.doc-list{list-style:none}.doc-item{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;border-radius:var(--radius-sm);transition:background var(--transition-fast);border-bottom:1px solid var(--border-subtle)}.doc-item:hover{background:#3b82f60f}.doc-item .doc-name{font-size:.85rem;font-weight:500;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:180px}.doc-item .doc-chunks{font-size:.75rem;color:var(--text-muted);font-family:var(--font-mono);background:var(--bg-tertiary);padding:2px 8px;border-radius:12px}.ask-panel{padding:24px}.ask-panel h2{font-size:1.1rem;font-weight:600;margin-bottom:16px;color:var(--text-primary)}.question-input-wrapper{position:relative}.question-input{width:100%;padding:16px 120px 16px 20px;background:var(--bg-tertiary);border:1px solid 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rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;top:50%;left:50%;transform:translate(-50%,-50%);animation:spin .6s linear infinite}@keyframes spin{to{transform:translate(-50%,-50%) rotate(360deg)}}.answer-view{padding:24px}.answer-view h2{font-size:1.1rem;font-weight:600;margin-bottom:16px;color:var(--text-primary)}.answer-content{font-size:.95rem;line-height:1.8;color:var(--text-primary)}.answer-content p{margin-bottom:12px}.answer-content strong{color:var(--accent-blue)}.citation-marker{display:inline-flex;align-items:center;justify-content:center;background:var(--accent-blue-glow);color:var(--accent-blue);font-size:.75rem;font-weight:700;font-family:var(--font-mono);padding:1px 6px;border-radius:4px;cursor:pointer;transition:all var(--transition-fast);text-decoration:none;margin:0 2px;vertical-align:super;line-height:1}.citation-marker:hover{background:var(--accent-blue);color:#fff;transform:scale(1.1);box-shadow:0 0 10px 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.status{font-family:var(--font-mono);font-size:.75rem}.upload-progress-item .status.success{color:var(--accent-emerald)}.upload-progress-item .status.error{color:var(--accent-red)}.upload-progress-item .status.loading{color:var(--accent-blue)}@media (max-width: 1200px){.app-container{grid-template-columns:1fr;grid-template-rows:auto}.sidebar-left,.sidebar-right,.main-area{max-height:none}}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-subtle);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}