*{margin:0;padding:0;box-sizing:border-box}.app{display:flex;flex-direction:column;height:100vh;background:linear-gradient(135deg,#8b4513,#5d3a1a);background-image:linear-gradient(135deg,#8b4513f2,#5d3a1af2),repeating-linear-gradient(90deg,transparent,transparent 3px,rgba(0,0,0,.03) 3px,rgba(0,0,0,.03) 6px);font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}.header{background:linear-gradient(to bottom,#f5e6d3,#e8d4b8);border-bottom:4px solid #8b4513;border-top:3px solid #d4a574;padding:1rem 1.5rem;box-shadow:0 4px 12px #0003;position:relative}.header:after{content:"";position:absolute;bottom:-4px;left:0;right:0;height:4px;background:repeating-linear-gradient(90deg,#c41e3a,#c41e3a 15px,#fff 15px,#fff 30px,#00966e 30px,#00966e 45px,#fff 45px,#fff 60px)}.header-content{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem}.title-section{flex:1}.logo-container{display:flex;justify-content:center;align-items:center}.logo{max-width:100%;height:auto;max-height:200px;object-fit:contain;filter:drop-shadow(0 2px 4px rgba(0,0,0,.2))}@media (max-width: 768px){.logo{max-height:150px}}.controls{display:flex;gap:.75rem;flex-wrap:wrap}.controls button{padding:.65rem 1.25rem;border:3px solid #5c3a1e;border-radius:8px;font-size:.95rem;cursor:pointer;transition:all .2s;font-weight:600;box-shadow:0 3px 6px #0003;text-shadow:1px 1px 2px rgba(0,0,0,.3)}.mode-toggle{background:linear-gradient(to bottom,#8b6f47,#6b4e2e);color:#f5e6d3;border-color:#5c3a1e}.mode-toggle:hover{background:linear-gradient(to bottom,#9b7f57,#7b5e3e);transform:translateY(-2px);box-shadow:0 5px 10px #0000004d}.clear-btn{background:linear-gradient(to bottom,#d4a574,#b48a5e);color:#2c1810;border-color:#5c3a1e}.clear-btn:hover{background:linear-gradient(to bottom,#e4b584,#c49a6e);transform:translateY(-2px);box-shadow:0 5px 10px #0000004d}.reset-btn{background:linear-gradient(to bottom,#c41e3a,#a01828);color:#ffe6e6;border-color:#8b1424}.reset-btn:hover{background:linear-gradient(to bottom,#d42e4a,#b02838);transform:translateY(-2px);box-shadow:0 5px 10px #0000004d}.chat-container{flex:1;display:flex;flex-direction:column;max-width:1200px;width:100%;margin:0 auto;padding:1.5rem;overflow:hidden}.messages{flex:1;overflow-y:auto;padding:1.5rem;background:#faf8f5;border-radius:12px;margin-bottom:1rem;box-shadow:0 4px 20px #00000026;border:2px solid #d4a574}.welcome{text-align:center;padding:3rem 1rem;color:#5d3a1a;font-size:1.2rem;font-weight:500}.message{margin-bottom:1rem;display:flex;animation:fadeIn .3s}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message.user{justify-content:flex-end}.message.assistant{justify-content:flex-start}.message-content{max-width:70%;padding:.75rem 1rem;border-radius:12px;line-height:1.6;word-wrap:break-word}.message.user .message-content{background:linear-gradient(135deg,#8b6f47,#6b4e2e);color:#faf8f5;border-bottom-right-radius:4px;border:2px solid #5c3a1e;box-shadow:0 2px 6px #00000026}.message.assistant .message-content{background:linear-gradient(135deg,#f5e6d3,#e8d4b8);color:#2c1810;border-bottom-left-radius:4px;border:2px solid #d4a574;box-shadow:0 2px 6px #0000001a}.message-content.loading{font-style:italic;opacity:.7}.error-message{padding:1rem;background:#ffe6e6;color:#8b1424;border-radius:8px;margin-bottom:1rem;text-align:center;border:2px solid #c41e3a;font-weight:500}.input-area{display:flex;gap:.75rem;background:#faf8f5;padding:1rem;border-radius:12px;box-shadow:0 4px 20px #00000026;border:2px solid #d4a574}.input-area textarea{flex:1;padding:.75rem;border:2px solid #d4a574;border-radius:8px;font-size:1rem;font-family:inherit;resize:none;transition:border-color .2s;background:#fff}.input-area textarea:focus{outline:none;border-color:#8b6f47}.input-area textarea:disabled{background:#f3f4f6;cursor:not-allowed}.input-area button{padding:.75rem 2rem;background:linear-gradient(to bottom,#8b6f47,#6b4e2e);color:#faf8f5;border:3px solid #5c3a1e;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s;box-shadow:0 3px 6px #0003;text-shadow:1px 1px 2px rgba(0,0,0,.3)}.input-area button:hover:not(:disabled){background:linear-gradient(to bottom,#9b7f57,#7b5e3e);transform:translateY(-2px);box-shadow:0 5px 10px #0000004d}.input-area button:disabled{background:#9ca3af;cursor:not-allowed;transform:none;opacity:.5}@media (max-width: 768px){.header-content{flex-direction:column;align-items:stretch}.title-section{text-align:center}.controls{justify-content:center}.message-content{max-width:85%}}body{margin:0;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}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}#root{height:100vh}