:root{--primary-color: #007bff;--secondary-color: #6c757d;--background-color: #f8f9fa;--text-color: #212529;--border-color: #dee2e6;--error-color: #dc3545;--success-color: #28a745}*{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)}.app{min-height:100vh;display:flex;flex-direction:column}.navbar{background-color:#fff;border-bottom:1px solid var(--border-color);padding:1rem 0;box-shadow:0 2px 4px #0000000d}.nav-container{max-width:1200px;margin:0 auto;padding:0 1rem;display:flex;justify-content:space-between;align-items:center}.nav-title{font-size:1.5rem;font-weight:600;color:var(--primary-color)}.nav-links{display:flex;gap:1.5rem}.nav-link{text-decoration:none;color:var(--text-color);font-weight:500;transition:color .2s}.nav-link:hover{color:var(--primary-color)}.main-content{flex:1;max-width:1200px;width:100%;margin:0 auto;padding:2rem 1rem}.page-title{font-size:2rem;font-weight:600;margin-bottom:1.5rem;color:var(--text-color)}.card{background:#fff;border-radius:8px;padding:1.5rem;box-shadow:0 2px 8px #0000001a}.button{padding:.75rem 1.5rem;border:none;border-radius:6px;font-size:1rem;font-weight:500;cursor:pointer;transition:all .2s}.button-primary{background-color:var(--primary-color);color:#fff}.button-primary:hover:not(:disabled){background-color:#0056b3}.button:disabled{opacity:.6;cursor:not-allowed}.input{width:100%;padding:.75rem;border:1px solid var(--border-color);border-radius:6px;font-size:1rem;transition:border-color .2s}.input:focus{outline:none;border-color:var(--primary-color)}.error-message{color:var(--error-color);font-size:.875rem;margin-top:.5rem}.success-message{color:var(--success-color);font-size:.875rem;margin-top:.5rem}.loading{display:inline-block;width:1rem;height:1rem;border:2px solid var(--border-color);border-top-color:var(--primary-color);border-radius:50%;animation:spin .6s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.chat-container{display:flex;flex-direction:column;height:calc(100vh - 200px);max-width:900px;margin:0 auto}.chat-header{padding-bottom:1rem;border-bottom:1px solid var(--border-color)}.chat-messages{flex:1;overflow-y:auto;padding:1.5rem 0;display:flex;flex-direction:column;gap:1.5rem}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;padding:2rem}.suggested-questions{display:flex;flex-direction:column;gap:.75rem;max-width:400px}.suggestion-button{padding:.75rem 1rem;border:1px solid var(--border-color);border-radius:6px;background:#fff;cursor:pointer;text-align:left;transition:all .2s;font-size:.875rem}.suggestion-button:hover{border-color:var(--primary-color);background-color:var(--background-color)}.message{display:flex;gap:1rem;animation:messageSlideIn .3s ease-out}@keyframes messageSlideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message-user{flex-direction:row-reverse}.message-avatar{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.5rem;flex-shrink:0}.message-content{flex:1;max-width:70%}.message-user .message-content{display:flex;flex-direction:column;align-items:flex-end}.message-role{font-size:.75rem;font-weight:600;color:var(--secondary-color);margin-bottom:.25rem}.message-text{background:#fff;padding:.75rem 1rem;border-radius:12px;box-shadow:0 1px 3px #0000001a;line-height:1.5;white-space:pre-wrap;word-wrap:break-word}.message-user .message-text{background:var(--primary-color);color:#fff}.message-timestamp{font-size:.7rem;color:var(--secondary-color);margin-top:.25rem}.chat-error{background:#fff3cd;border:1px solid #ffc107;color:#856404;padding:.75rem 1rem;border-radius:6px;margin-bottom:1rem;display:flex;align-items:center}.chat-input-form{display:flex;gap:.75rem;padding-top:1rem;border-top:1px solid var(--border-color)}.chat-input{flex:1;padding:.75rem 1rem;border:1px solid var(--border-color);border-radius:24px;font-size:1rem;transition:border-color .2s}.chat-input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #007bff1a}.chat-send-button{padding:.75rem 1.5rem;border-radius:24px;white-space:nowrap}.chat-messages::-webkit-scrollbar{width:8px}.chat-messages::-webkit-scrollbar-track{background:var(--background-color);border-radius:4px}.chat-messages::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}.chat-messages::-webkit-scrollbar-thumb:hover{background:var(--secondary-color)}