:root{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.5;font-weight:400;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;min-width:320px;min-height:100vh;background:#0f0f0f}:root{--bg-primary: #0f0f0f;--bg-secondary: #1a1a1a;--bg-tertiary: #252525;--text-primary: #ffffff;--text-secondary: #a0a0a0;--accent: #6366f1;--accent-hover: #818cf8;--border: #333333;--user-bubble: #6366f1;--ai-bubble: #252525;--shadow: rgba(0, 0, 0, .3)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--bg-primary);color:var(--text-primary);min-height:100vh;display:flex;justify-content:center;align-items:center}#root{width:100%;max-width:900px;height:100vh;padding:20px}.chat-container{display:flex;flex-direction:column;height:100%;background:var(--bg-secondary);border-radius:16px;overflow:hidden;box-shadow:0 25px 50px -12px var(--shadow);border:1px solid var(--border)}.chat-header{padding:20px 24px;background:var(--bg-tertiary);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:12px}.chat-header-icon{width:36px;height:36px;background:var(--accent);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:18px}.chat-header-text h1{font-size:16px;font-weight:600;margin:0}.chat-header-text p{font-size:12px;color:var(--text-secondary);margin:2px 0 0}.messages-container{flex:1;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:16px}.messages-container::-webkit-scrollbar{width:6px}.messages-container::-webkit-scrollbar-track{background:transparent}.messages-container::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.message{display:flex;gap:12px;max-width:80%;animation:fadeIn .3s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message.user{align-self:flex-end;flex-direction:row-reverse}.message.ai{align-self:flex-start}.message-avatar{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:14px;flex-shrink:0}.message.user .message-avatar{background:var(--user-bubble)}.message.ai .message-avatar{background:var(--ai-bubble);border:1px solid var(--border)}.message-content{padding:12px 16px;border-radius:12px;font-size:14px;line-height:1.6;word-wrap:break-word}.message.user .message-content{background:var(--user-bubble);color:#fff;border-bottom-right-radius:4px}.message.ai .message-content{background:var(--ai-bubble);color:var(--text-primary);border:1px solid var(--border);border-bottom-left-radius:4px}.input-container{padding:20px 24px;background:var(--bg-tertiary);border-top:1px solid var(--border);display:flex;gap:12px;align-items:flex-end}.input-wrapper{flex:1;background:var(--bg-secondary);border:1px solid var(--border);border-radius:12px;padding:12px 16px;display:flex;align-items:center;transition:border-color .2s ease}.input-wrapper:focus-within{border-color:var(--accent)}.input-wrapper textarea{width:100%;background:transparent;border:none;outline:none;color:var(--text-primary);font-size:14px;resize:none;min-height:20px;max-height:120px;font-family:inherit}.input-wrapper textarea::placeholder{color:var(--text-secondary)}.send-button{width:44px;height:44px;border-radius:12px;background:var(--accent);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease;flex-shrink:0}.send-button:hover:not(:disabled){background:var(--accent-hover);transform:scale(1.05)}.send-button:disabled{opacity:.5;cursor:not-allowed}.send-button svg{width:20px;height:20px;color:#fff}.loading-indicator{display:flex;gap:4px;padding:16px;align-self:flex-start}.loading-indicator span{width:8px;height:8px;background:var(--accent);border-radius:50%;animation:bounce 1.4s ease-in-out infinite both}.loading-indicator span:nth-child(1){animation-delay:-.32s}.loading-indicator span:nth-child(2){animation-delay:-.16s}@keyframes bounce{0%,80%,to{transform:scale(0)}40%{transform:scale(1)}}.welcome-message{text-align:center;padding:60px 20px;color:var(--text-secondary)}.welcome-message h2{font-size:24px;font-weight:600;margin-bottom:8px;color:var(--text-primary)}.welcome-message p{font-size:14px}