:root{--bg-color:#0d0d12;--panel-bg:#15151c;--bubble-ai:#1e1e28;--bubble-user:#10b981;--text-main:#f3f4f6;--text-muted:#9ca3af;--border-color:#2b2b36;--font-family:"Söhne", "Inter", "Helvetica Neue", "Arial", sans-serif;--radius-lg:24px;--radius-md:16px;--radius-sm:8px}*{box-sizing:border-box;margin:0;padding:0}body,html{height:100%;font-family:var(--font-family);background-color:var(--bg-color);color:var(--text-main);flex-direction:column;display:flex}h1,h2,h3,h4,h5,h6{font-weight:500}a{color:var(--bubble-user);text-decoration:none}a:hover{text-decoration:underline}.top-nav{background-color:var(--bg-color);border-bottom:1px solid var(--border-color);z-index:10;justify-content:space-between;align-items:center;padding:16px 24px;display:flex}.nav-brand{align-items:center;gap:10px;font-size:1.1rem;font-weight:500;display:flex}.brand-icon{color:var(--bubble-user)}.icon-btn{color:var(--text-muted);cursor:pointer;border-radius:var(--radius-sm);background:0 0;border:none;justify-content:center;align-items:center;padding:6px;transition:all .2s;display:flex}.icon-btn:hover{background-color:var(--panel-bg);color:var(--text-main)}.chat-container{flex-direction:column;flex:1;align-items:center;padding:24px;display:flex;overflow-y:auto}.messages-wrapper{flex-direction:column;gap:24px;width:100%;max-width:800px;padding-bottom:40px;display:flex}.message{align-items:flex-start;gap:16px;animation:.3s ease-out forwards fadeIn;display:flex}.message.user-message{flex-direction:row-reverse}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.avatar{border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;display:flex}.ai-avatar{color:#fff;background:linear-gradient(135deg,#10b981 0%,#059669 100%)}.user-avatar{background-color:var(--panel-bg);border:1px solid var(--border-color)}.bubble{letter-spacing:.01em;max-width:85%;font-size:1rem;line-height:1.6}.message.ai-message .bubble,.system-greeting .bubble{color:var(--text-main);background-color:#0000}.message.user-message .bubble{background-color:var(--panel-bg);border-radius:var(--radius-md);border-bottom-right-radius:4px;padding:12px 18px}.bubble p{margin-bottom:12px}.bubble p:last-child{margin-bottom:0}.bubble strong{color:#fff;font-weight:600}.bubble ul,.bubble ol{margin-bottom:12px;margin-left:20px}.loading-dots{gap:4px;display:inline-flex}.dot{background-color:var(--text-muted);border-radius:50%;width:6px;height:6px;animation:1.4s ease-in-out infinite both bounce}.dot:first-child{animation-delay:-.32s}.dot:nth-child(2){animation-delay:-.16s}@keyframes bounce{0%,80%,to{transform:scale(0)}40%{transform:scale(1)}}.input-container{background-color:var(--bg-color);background:linear-gradient(0deg, var(--bg-color) 70%, transparent);flex-direction:column;align-items:center;padding:16px 24px 24px;display:flex}.input-box{background-color:var(--panel-bg);border:1px solid var(--border-color);border-radius:var(--radius-lg);align-items:flex-end;gap:12px;width:100%;max-width:800px;padding:12px 16px;transition:border-color .2s,box-shadow .2s;display:flex}.input-box:focus-within{border-color:#3f3f4e;box-shadow:0 4px 20px #0006}#chat-input{color:var(--text-main);resize:none;background:0 0;border:none;outline:none;flex:1;max-height:200px;padding:4px 0;font-family:inherit;font-size:1rem;line-height:1.5;overflow-y:auto}#chat-input::placeholder{color:var(--text-muted)}#send-btn{background:var(--bubble-user);color:#fff;cursor:pointer;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;transition:opacity .2s,transform .2s;display:flex}#send-btn:hover:not(:disabled){opacity:.9;transform:scale(1.05)}#send-btn:disabled{background:var(--border-color);color:var(--text-muted);cursor:not-allowed}.disclaimer{color:var(--text-muted);text-align:center;margin-top:12px;font-size:.75rem}@media (width<=768px){.chat-container{padding:16px}.input-container{padding:12px 16px 16px}.bubble{max-width:90%}}