:root{--nav-bg: #2c3e50;--button-bg: #1abc9c;--page-bg: #616161;--text-color: #f1f1f1;--input-bg: #f1f1f1;--accent-color: #3498db;--bot-message-bg: #2c3e50;--user-message-bg: #3498db;--font-family: "Inter", sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--page-bg);color:var(--text-color);display:flex;flex-direction:column;height:100vh;overflow:hidden}#root{display:flex;flex-direction:column;height:100%}.app-container{display:flex;flex-direction:column;height:100%;max-width:800px;margin:0 auto;width:100%;background-color:var(--page-bg)}.navbar{background-color:var(--nav-bg);padding:1rem 1.5rem;font-size:1.5rem;font-weight:700;text-align:center;box-shadow:0 2px 4px #0003;flex-shrink:0}.chat-window{flex-grow:1;overflow-y:auto;padding:1.5rem;display:flex;flex-direction:column;gap:1rem}.message{max-width:80%;padding:.75rem 1rem;border-radius:18px;line-height:1.5;word-wrap:break-word}.message p{margin:0}.message p:not(:last-child){margin-bottom:.75em}.message ul{margin:.5em 0;padding-left:1.25rem}.message li{margin-bottom:.25em}.message.bot{background-color:var(--bot-message-bg);align-self:flex-start;border-bottom-left-radius:4px}.message.user{background-color:var(--user-message-bg);align-self:flex-end;border-bottom-right-radius:4px}.message.loading{align-self:flex-start}.loading span{display:inline-block;width:8px;height:8px;border-radius:50%;background-color:var(--text-color);margin:0 2px;animation:bounce 1.4s infinite ease-in-out both}.loading span:nth-child(1){animation-delay:-.32s}.loading span:nth-child(2){animation-delay:-.16s}@keyframes bounce{0%,80%,to{transform:scale(0)}40%{transform:scale(1)}}.input-form-container{padding:1rem 1.5rem;background-color:var(--page-bg);flex-shrink:0}.input-form{display:flex;gap:.5rem}.input-form input{flex-grow:1;border:none;padding:.75rem 1rem;border-radius:20px;background-color:var(--input-bg);color:#333;font-family:var(--font-family);font-size:1rem}.input-form input:focus{outline:2px solid var(--accent-color)}.input-form button{background-color:var(--button-bg);color:var(--text-color);border:none;padding:.75rem 1.5rem;border-radius:20px;font-family:var(--font-family);font-size:1rem;font-weight:500;cursor:pointer;transition:background-color .2s}.input-form button:hover:not(:disabled){filter:brightness(1.1)}.input-form button:disabled{background-color:#95a5a6;cursor:not-allowed}@media (max-width: 600px){.navbar{font-size:1.25rem;padding:.75rem 1rem}.chat-window{padding:1rem}.message{max-width:90%;padding:.5rem .75rem}.input-form-container{padding:.75rem}.input-form{gap:.5rem}.input-form button{padding:.75rem 1rem}}