.file-upload-container{max-width:600px;margin:0 auto}.file-upload-dropzone{background-color:var(--card-background);border:3px dashed var(--border-color);border-radius:12px;padding:3rem 2rem;text-align:center;transition:all .3s ease;cursor:pointer}.file-upload-dropzone:hover{border-color:var(--secondary-color);box-shadow:var(--shadow-hover)}.file-upload-dropzone.dragging{border-color:var(--secondary-color);background-color:#3498db0d;box-shadow:var(--shadow-hover)}.file-upload-dropzone.processing{border-style:solid;cursor:default}.upload-icon{font-size:4rem;margin-bottom:1rem}.file-upload-dropzone h3{color:var(--primary-color);margin-bottom:.5rem;font-size:1.5rem}.upload-description{color:#7f8c8d;margin-bottom:1.5rem;font-size:1rem}.file-input{display:none}.file-input-label{display:inline-block;background-color:var(--secondary-color);color:#fff;padding:.75rem 2rem;border-radius:6px;font-size:1rem;font-weight:500;cursor:pointer;transition:all .3s ease}.file-input-label:hover{background-color:#2980b9;box-shadow:var(--shadow-hover)}.processing-indicator{display:flex;flex-direction:column;align-items:center;gap:1rem}.spinner{width:50px;height:50px;border:4px solid var(--border-color);border-top-color:var(--secondary-color);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.processing-indicator p{color:var(--primary-color);font-size:1.1rem;font-weight:500}.error-message{background-color:#fee;border:1px solid var(--accent-color);color:var(--accent-color);padding:1rem;border-radius:6px;margin-top:1rem;text-align:center}.api-key-input{background-color:var(--card-background);padding:2.5rem;border-radius:12px;box-shadow:var(--shadow);max-width:600px;margin:0 auto}.api-key-input.compact{padding:1.5rem;margin-bottom:2rem}.api-key-input h2{color:var(--primary-color);margin-bottom:1rem;font-size:1.8rem}.api-key-description{color:#7f8c8d;margin-bottom:1.5rem;font-size:.95rem;line-height:1.5}.api-key-input form{display:flex;flex-direction:column;gap:1rem}.api-key-field{padding:1rem;border:2px solid var(--border-color);border-radius:6px;font-size:1rem;background-color:var(--input-bg);color:var(--text-color);transition:border-color .3s ease}.api-key-field:focus{outline:none;border-color:var(--secondary-color)}.submit-key-btn{background-color:var(--secondary-color);color:#fff;border:none;padding:1rem;border-radius:6px;font-size:1.1rem;font-weight:500;transition:all .3s ease}.submit-key-btn:hover{background-color:#2980b9;box-shadow:var(--shadow-hover)}.api-key-help{margin-top:1rem;font-size:.9rem;color:#7f8c8d;text-align:center}.api-key-help a{color:var(--secondary-color);text-decoration:none;font-weight:500}.api-key-help a:hover{text-decoration:underline}.api-key-compact{background-color:var(--card-background);padding:1rem 1.5rem;border-radius:8px;box-shadow:var(--shadow);display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.api-key-compact span{font-family:monospace;color:var(--text-color)}.edit-key-btn{background-color:transparent;color:var(--secondary-color);border:1px solid var(--secondary-color);padding:.5rem 1rem;border-radius:6px;font-size:.9rem;transition:all .3s ease}.edit-key-btn:hover{background-color:var(--secondary-color);color:#fff}.chat-interface{display:flex;flex-direction:column;height:calc(100vh - 250px);background-color:var(--card-background);border-radius:12px;box-shadow:var(--shadow);overflow:hidden}.chat-controls{padding:1rem 1.5rem;border-bottom:1px solid var(--border-color);background-color:var(--input-bg)}.auto-save-toggle{display:flex;align-items:center;gap:.5rem;cursor:pointer;font-size:.95rem;color:var(--text-color)}.auto-save-toggle input[type=checkbox]{width:18px;height:18px;cursor:pointer}.messages-container{flex:1;overflow-y:auto;padding:1.5rem;display:flex;flex-direction:column;gap:1.5rem}.message{padding:1.5rem;border-radius:8px;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message.user{background-color:var(--message-user-bg);border-left:4px solid var(--secondary-color);margin-left:2rem}.message.assistant{background-color:var(--message-assistant-bg);border-left:4px solid var(--primary-color);margin-right:2rem}.message.error{background-color:#ffebee;border-left:4px solid var(--accent-color);color:var(--accent-color)}.message-header{margin-bottom:1rem}.message-label{font-weight:600;font-size:.9rem;text-transform:uppercase;letter-spacing:.5px;color:var(--text-color);opacity:.8}.message.user .message-label{color:var(--secondary-color)}.message-footer{margin-top:1rem;display:flex;justify-content:flex-end;padding-top:.75rem;border-top:1px solid var(--border-color)}.download-btn{background-color:var(--secondary-color);color:#fff;border:none;padding:.5rem 1rem;border-radius:4px;font-size:.85rem;font-weight:500;transition:all .2s ease}.download-btn:hover{opacity:.9;box-shadow:0 2px 4px #0003}.message-content{line-height:1.8;white-space:pre-wrap;word-wrap:break-word;color:var(--text-color);font-size:1rem}.message-timestamp{margin-top:.75rem;font-size:.8rem;color:#95a5a6;font-style:italic}.typing-indicator{display:flex;gap:.5rem;padding:1rem 0}.typing-indicator span{width:10px;height:10px;background-color:var(--primary-color);border-radius:50%;animation:bounce 1.4s infinite ease-in-out both}.typing-indicator span:nth-child(1){animation-delay:-.32s}.typing-indicator span:nth-child(2){animation-delay:-.16s}@keyframes bounce{0%,80%,to{transform:scale(0);opacity:.5}40%{transform:scale(1);opacity:1}}.chat-input-form{display:flex;gap:1rem;padding:1.5rem;border-top:1px solid var(--border-color);background-color:var(--input-bg)}.chat-input{flex:1;padding:.875rem 1rem;border:2px solid var(--border-color);border-radius:6px;font-size:1rem;background-color:var(--card-background);color:var(--text-color);transition:border-color .3s ease}.chat-input:focus{outline:none;border-color:var(--secondary-color)}.chat-input:disabled{opacity:.6;cursor:not-allowed}.send-btn{background-color:var(--secondary-color);color:#fff;border:none;padding:.875rem 2rem;border-radius:6px;font-size:1rem;font-weight:500;transition:all .3s ease;min-width:100px}.send-btn:hover:not(:disabled){background-color:#2980b9;box-shadow:var(--shadow-hover)}.send-btn:disabled{background-color:#bdc3c7;cursor:not-allowed}.messages-container::-webkit-scrollbar{width:10px}.messages-container::-webkit-scrollbar-track{background:#f1f1f1;border-radius:10px}.messages-container::-webkit-scrollbar-thumb{background:#bdc3c7;border-radius:10px}.messages-container::-webkit-scrollbar-thumb:hover{background:#95a5a6}@media (max-width: 768px){.chat-interface{height:calc(100vh - 300px)}.message.user{margin-left:0}.message.assistant{margin-right:0}.chat-input-form{flex-direction:column;gap:.75rem}.send-btn{width:100%}}.theme-toggle{background-color:transparent;border:2px solid rgba(255,255,255,.3);border-radius:50%;width:45px;height:45px;display:flex;align-items:center;justify-content:center;transition:all .3s ease;padding:0}.theme-toggle:hover{background-color:#ffffff1a;border-color:#ffffff80;transform:rotate(20deg)}.theme-icon{font-size:1.5rem;display:block;line-height:1}body[data-theme=light] .theme-toggle{border-color:#0003}body[data-theme=light] .theme-toggle:hover{background-color:#0000000d;border-color:#0000004d}.app{min-height:100vh;display:flex;flex-direction:column}.app-header{background-color:var(--header-bg);color:#fff;padding:2rem;box-shadow:var(--shadow)}.header-content{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;gap:2rem}.header-text{text-align:center;flex:1}.app-header h1{font-size:2.5rem;margin-bottom:.5rem;font-weight:600}.subtitle{font-size:1.1rem;opacity:.9;font-weight:300}.app-main{flex:1;padding:2rem;max-width:1200px;width:100%;margin:0 auto}.document-info{background-color:var(--card-background);padding:1.5rem;border-radius:8px;box-shadow:var(--shadow);margin-bottom:2rem;display:flex;justify-content:space-between;align-items:center}.document-info h3{font-size:1.3rem;color:var(--text-color);margin:0}.new-document-btn{background-color:var(--secondary-color);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:6px;font-size:1rem;font-weight:500;transition:all .3s ease}.new-document-btn:hover{opacity:.9;box-shadow:var(--shadow-hover)}@media (max-width: 768px){.header-content{flex-direction:column;gap:1rem}.app-header h1{font-size:2rem}.subtitle{font-size:1rem}.document-info{flex-direction:column;gap:1rem;text-align:center}.app-main{padding:1rem}}:root{--primary-color: #4a90e2;--secondary-color: #5dade2;--accent-color: #e74c3c;--background-color: #1a1a1a;--text-color: #e0e0e0;--border-color: #3a3a3a;--card-background: #2a2a2a;--shadow: 0 2px 8px rgba(0, 0, 0, .3);--shadow-hover: 0 4px 12px rgba(0, 0, 0, .4);--message-user-bg: #1e3a5f;--message-assistant-bg: #2d2d2d;--input-bg: #333333;--header-bg: #212121}body[data-theme=light]{--primary-color: #2c3e50;--secondary-color: #3498db;--accent-color: #e74c3c;--background-color: #ecf0f1;--text-color: #2c3e50;--border-color: #bdc3c7;--card-background: #ffffff;--shadow: 0 2px 8px rgba(0, 0, 0, .1);--shadow-hover: 0 4px 12px rgba(0, 0, 0, .15);--message-user-bg: #e3f2fd;--message-assistant-bg: #f5f5f5;--input-bg: #ffffff;--header-bg: #2c3e50}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--background-color);color:var(--text-color);line-height:1.6}#root{min-height:100vh}button{cursor:pointer;font-family:inherit}input,textarea{font-family:inherit}