:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}*{margin:0;padding:0;box-sizing:border-box;font-family:Inter,sans-serif}html,body,#root{height:100%;width:100%}.app{display:flex;height:100vh;width:100vw;transition:all .3s ease;background:#f3f4f6;color:#111827}.app.dark{background:#0f172a;color:#e5e7eb}.sidebar{width:260px;background:#1f2937;color:#fff;padding:20px;flex-shrink:0;display:flex;flex-direction:column}.app.dark .sidebar{background:#020617}.sidebar h3{margin-bottom:20px}.doc-item{padding:12px;border-radius:10px;margin-bottom:12px;cursor:pointer;background:#ffffff14;transition:.3s}.doc-item:hover{background:#fff3}.chat-section{flex:1;display:flex;flex-direction:column}.header{background:#2563eb;color:#fff;padding:18px 25px;display:flex;justify-content:space-between;align-items:center;font-size:20px;font-weight:600}.toggle{background:#fff;color:#111827;border:2px solid #111827;padding:8px 16px;border-radius:12px;cursor:pointer;font-weight:600;transition:.3s ease}.app.dark .toggle{background:#1e293b;color:#fff;border:2px solid #ffffff}.messages{flex:1;padding:30px;overflow-y:auto;background:#f9fafb;transition:.3s}.app.dark .messages{background:#0f172a}.message{display:flex;margin-bottom:20px;align-items:flex-start}.message.user{justify-content:flex-end}.avatar{margin-right:12px;font-size:22px}.bubble{max-width:60%;padding:14px 18px;border-radius:16px;background:#fff;color:#111827;box-shadow:0 4px 12px #0000000d;transition:.3s}.user .bubble{background:#2563eb;color:#fff}.app.dark .bubble{background:#1e293b;color:#e5e7eb}.app.dark .user .bubble{background:#3b82f6;color:#fff}.meta{margin-top:10px;font-size:12px;display:flex;justify-content:space-between;align-items:center}.badge{padding:4px 10px;border-radius:12px;font-size:11px;font-weight:600}.badge.green{background:#22c55e;color:#fff}.badge.orange{background:#f59e0b;color:#fff}.badge.red{background:#ef4444;color:#fff}.typing span{height:8px;width:8px;margin-right:5px;background:gray;border-radius:50%;display:inline-block;animation:blink 1.4s infinite both}.typing span:nth-child(2){animation-delay:.2s}.typing span:nth-child(3){animation-delay:.4s}@keyframes blink{0%{opacity:.2}20%{opacity:1}to{opacity:.2}}.input-area{padding:18px;display:flex;border-top:1px solid #e5e7eb;background:#fff}.app.dark .input-area{background:#0f172a;border-top:1px solid #1e293b}input{flex:1;padding:12px 16px;border-radius:12px;border:1px solid #d1d5db;outline:none;font-size:14px}.app.dark input{background:#1e293b;border:1px solid #334155;color:#fff}button{margin-left:12px;padding:12px 22px;border-radius:12px;border:none;background:#2563eb;color:#fff;font-weight:600;cursor:pointer;transition:.3s}button:hover{background:#1d4ed8}.messages::-webkit-scrollbar{width:6px}.messages::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:10px}.app.dark .messages::-webkit-scrollbar-thumb{background:#334155}@media(max-width:768px){.sidebar{display:none}.bubble{max-width:80%}}