:root{--bg-color: #f0f2f5;--form-bg-color: #ffffff;--text-color: #1c1e21;--primary-color: #0056b3;--secondary-color: #007bff;--border-color: #ddd;--user-msg-bg: #007bff;--user-msg-text: #ffffff;--bot-msg-bg: #e4e6eb;--bot-msg-text: #050505;--input-bg: #ffffff}body.dark-theme{--bg-color: #18191a;--form-bg-color: #242526;--text-color: #e4e6eb;--primary-color: #2d88ff;--secondary-color: #2d88ff;--border-color: #3a3b3c;--user-msg-bg: #2d88ff;--user-msg-text: #ffffff;--bot-msg-bg: #3a3b3c;--bot-msg-text: #e4e6eb;--input-bg: #3a3b3c}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Roboto,sans-serif;background-color:var(--bg-color);color:var(--text-color);transition:background-color .3s,color .3s;overflow:hidden}#root{width:100vw;height:100vh;display:flex;justify-content:center;align-items:center}.landing-container{padding:40px;background-color:var(--form-bg-color);border-radius:12px;box-shadow:0 4px 20px #0000001a;width:100%;max-width:450px;text-align:center;transition:background-color .3s}.landing-container h1{font-size:28px;font-weight:700;color:var(--primary-color);margin-bottom:10px}.landing-container p{margin-bottom:30px;color:var(--text-color);opacity:.8}.landing-form .form-group{margin-bottom:20px;text-align:left}.landing-form input,.landing-form select{width:100%;padding:14px;border-radius:8px;border:1px solid var(--border-color);background-color:var(--bg-color);color:var(--text-color);font-size:16px}.landing-form button{width:100%;padding:14px;border:none;border-radius:8px;background-color:var(--primary-color);color:#fff;font-size:16px;font-weight:500;cursor:pointer;transition:background-color .3s}.landing-form button:hover{background-color:var(--secondary-color)}.landing-form button:disabled{background-color:#a0a0a0;cursor:not-allowed}.error-message{color:#ff3b30;margin-top:15px}.chat-page{width:100%;height:100%;display:flex;flex-direction:column;background-color:var(--bg-color)}.chat-header{padding:15px 20px;background-color:var(--form-bg-color);border-bottom:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center;box-shadow:0 2px 5px #0000000d}.chat-header h2{font-weight:700;color:var(--primary-color)}.theme-toggle{background:none;border:1px solid var(--border-color);border-radius:50%;width:40px;height:40px;cursor:pointer;font-size:20px;display:flex;justify-content:center;align-items:center;color:var(--text-color)}.messages-container{flex-grow:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:12px}.message{padding:12px 18px;border-radius:20px;max-width:70%;line-height:1.5;word-wrap:break-word}.message.user{background-color:var(--user-msg-bg);color:var(--user-msg-text);align-self:flex-end;border-bottom-right-radius:5px;animation:slideInUser .3s ease-out}.message.bot{background-color:var(--bot-msg-bg);color:var(--bot-msg-text);align-self:flex-start;border-bottom-left-radius:5px;animation:slideInBot .3s ease-out}.message.bot a{color:var(--primary-color);text-decoration:underline}.typing-indicator{align-self:flex-start;display:flex;gap:5px;padding:12px 18px;background-color:var(--bot-msg-bg);border-radius:20px 20px 20px 5px}.typing-indicator span{width:8px;height:8px;background-color:var(--bot-msg-text);opacity:.7;border-radius:50%;animation:typing 1s infinite}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}.chat-input-form{display:flex;padding:15px;border-top:1px solid var(--border-color);background-color:var(--form-bg-color)}.chat-input-form input{flex-grow:1;padding:12px 15px;border:1px solid var(--border-color);border-radius:20px;margin-right:10px;background-color:var(--input-bg);color:var(--text-color);font-size:16px}.chat-input-form input:focus{outline:none;border-color:var(--primary-color)}.chat-input-form input:disabled{background-color:#eee}body.dark-theme .chat-input-form input:disabled{background-color:#2a2b2c}.chat-input-form button{width:50px;height:50px;border-radius:50%;border:none;background-color:var(--primary-color);color:#fff;cursor:pointer;display:flex;justify-content:center;align-items:center;transition:background-color .2s}.chat-input-form button:hover{background-color:var(--secondary-color)}.chat-input-form button:disabled{background-color:#a0a0a0;cursor:not-allowed}@keyframes slideInUser{0%{transform:translate(20px);opacity:0}to{transform:translate(0);opacity:1}}@keyframes slideInBot{0%{transform:translate(-20px);opacity:0}to{transform:translate(0);opacity:1}}@keyframes typing{0%,to{transform:translateY(0)}50%{transform:translateY(-5px)}}#root{max-width:1280px;margin:0 auto;padding:2rem;text-align:center}.logo{height:6em;padding:1.5em;will-change:filter;transition:filter .3s}.logo:hover{filter:drop-shadow(0 0 2em #646cffaa)}.logo.react:hover{filter:drop-shadow(0 0 2em #61dafbaa)}@keyframes logo-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media (prefers-reduced-motion: no-preference){a:nth-of-type(2) .logo{animation:logo-spin infinite 20s linear}}.card{padding:2em}.read-the-docs{color:#888}