: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:#2424240f;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}}body,html{overflow-x:hidden;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}*{margin:0;padding:0;box-sizing:border-box;text-decoration:none}body{background:#000}.App{width:100vw;height:100vh;position:relative}.main-content{position:relative;z-index:10;width:100%;height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;-webkit-backdrop-filter:blur(1px);backdrop-filter:blur(1px)}.upload-container{text-align:center;max-width:500px;width:100%}.brand-header{margin-bottom:3rem}.brand-title{font-size:4rem;font-weight:800;background:linear-gradient(135deg,#fff,#e0e0e0);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:.5rem;text-shadow:0 0 30px rgba(255,255,255,.3)}.brand-subtitle{font-size:1.2rem;color:#ffffffb3;font-weight:300}.upload-card{background:#0000;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.1);border-radius:24px;padding:3rem 2rem;box-shadow:0 8px 32px #1f268726;transition:all .3s ease}.upload-card:hover{transform:translateY(-5px);box-shadow:0 30px 60px #0006}.upload-icon{font-size:4rem;margin-bottom:1.5rem}.upload-card h2{color:#fff;font-size:1.8rem;margin-bottom:1rem;font-weight:600}.upload-card p{color:#fffc;margin-bottom:2rem;font-size:1.1rem}.upload-btn{background:linear-gradient(135deg,#667eea,#764ba2);border:none;color:#fff;padding:1rem 2rem;font-size:1.1rem;border-radius:16px;cursor:pointer;transition:all .3s ease;display:inline-flex;align-items:center;gap:.5rem;font-weight:600;box-shadow:0 10px 20px #667eea4d}.upload-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 15px 30px #667eea66}.upload-btn:disabled{opacity:.7;cursor:not-allowed}.upload-icon-btn{font-size:1.2rem}.processing-text{color:#fffc;margin-top:1rem;font-style:italic}.loading-spinner{width:20px;height:20px;border:2px solid rgba(255,255,255,.3);border-top:2px solid white;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.chat-container{width:100%;max-width:900px;height:90vh;display:flex;flex-direction:column;background:#0000001a;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);border:1px solid rgba(255,255,255,.05);border-radius:24px;overflow:hidden;box-shadow:0 8px 32px #1f26871a}.chat-header{display:flex;justify-content:space-between;align-items:center;padding:1.5rem 2rem;background:#ffffff08;border-bottom:1px solid rgba(255,255,255,.05)}.document-info{display:flex;align-items:center;gap:.5rem;color:#fff;font-weight:500}.doc-icon{font-size:1.2rem}.doc-name{max-width:200px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.new-doc-btn{background:#ffffff1a;border:1px solid rgba(255,255,255,.2);color:#fff;padding:.5rem 1rem;border-radius:12px;cursor:pointer;transition:all .3s ease;font-size:.9rem}.new-doc-btn:hover{background:#fff3}.messages-container{flex:1;overflow-y:auto;padding:1.5rem;display:flex;background:#0000000f;flex-direction:column;gap:1.2rem}.message{display:flex;max-width:80%;background:#00000080;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:16px;border:1px solid rgba(255,255,255,.08);box-shadow:0 8px 32px #0000001a;margin:.5rem;transition:all .3s ease}.message.user{align-self:flex-end}.message.ai{align-self:flex-start}.message-content{padding:1rem 1.5rem;border-radius:18px;font-size:1rem;line-height:1.5}.message.user .message-content{background:#667eea33;color:#fff;border:1px solid rgba(118,75,162,.3);box-shadow:0 4px 15px #667eea40;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);border-bottom-right-radius:6px}.message.ai .message-content{background:#ffffff08;color:#fff;border:1px solid rgba(255,255,255,.05);border-bottom-left-radius:6px}.typing-indicator{display:flex;gap:4px;align-items:center}.typing-indicator span{width:8px;height:8px;border-radius:50%;background:#fff9;animation:typing 1.4s infinite ease-in-out}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}@keyframes typing{0%,60%,to{transform:translateY(0);opacity:.4}30%{transform:translateY(-10px);opacity:1}}.input-container{display:flex;padding:1.5rem;gap:1rem;background:#ffffff05;border-top:1px solid rgba(255,255,255,.05)}.message-input{flex:1;background:#ffffff08;border:1px solid rgba(255,255,255,.08);border-radius:16px;padding-inline:2rem;padding-block:.9rem;color:#fff;font-size:1rem;resize:none;outline:none;transition:all .3s ease;font-family:inherit;max-height:120px}.message-input::placeholder{color:#ffffff80}.message-input:focus{border-color:#667eea80;box-shadow:0 0 0 3px #667eea1a}.send-btn{background:linear-gradient(135deg,#667eea,#764ba2);border:none;color:#fff;width:50px;height:50px;border-radius:50%;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;font-size:1.2rem;box-shadow:0 5px 15px #667eea4d}.send-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 20px #667eea66}.send-btn:disabled{opacity:.5;cursor:not-allowed}.messages-container::-webkit-scrollbar{width:6px}.messages-container::-webkit-scrollbar-track{background:#ffffff1a;border-radius:3px}.messages-container::-webkit-scrollbar-thumb{background:#ffffff4d;border-radius:3px}.messages-container::-webkit-scrollbar-thumb:hover{background:#ffffff80}@media (max-width: 768px){.brand-title{font-size:3rem}.upload-card{padding:2rem 1.5rem}.chat-container{height:95vh;margin:10px}.message{max-width:90%}.chat-header{padding:1rem}.doc-name{max-width:150px}}.language-switcher{position:fixed;top:16px;right:16px;z-index:3;display:flex;gap:8px;align-items:center;background:#0006;padding:6px 10px;border-radius:8px;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.language-switcher select{background:transparent;color:#fff;border:none;outline:none;font-size:12px}.language-switcher option{color:#000}