:root{--bg-primary: #f7f7f8;--bg-secondary: #ffffff;--bg-message-user: #2b2b2b;--bg-message-assistant: #ffffff;--text-primary: #1a1a1a;--text-secondary: #6b6b6b;--text-inverse: #ffffff;--border-light: #e5e5e5;--border-medium: #d9d9e3;--accent-primary: #1a1a1a;--accent-hover: #3d3d3d;--accent-disabled: #d9d9e3;--shadow-sm: 0 -2px 10px rgba(0, 0, 0, .05);--shadow-md: 0 2px 10px rgba(0, 0, 0, .1)}*{margin:0;padding:0;box-sizing:border-box}body{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;background-color:var(--bg-primary)}#root{min-height:100vh;display:flex;flex-direction:column}.chat-container{min-height:100vh;display:flex;flex-direction:column;background-color:var(--bg-primary)}.chat-header{padding:1rem 1.5rem;background-color:var(--bg-secondary);color:var(--text-primary);text-align:center;border-bottom:1px solid var(--border-light)}.chat-header h1{font-size:1.25rem;font-weight:600}.messages-container{flex:1;padding:2rem 1rem 8rem;display:flex;flex-direction:column;gap:1rem;max-width:800px;margin:0 auto;width:100%}.empty-state{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;color:var(--text-secondary);text-align:center;gap:.5rem}.empty-state p{margin:0}.message{padding:1rem 1.25rem;border-radius:18px;max-width:80%;word-wrap:break-word;line-height:1.5}.message.user{align-self:flex-end;background-color:var(--bg-message-user);color:var(--text-inverse);margin-left:auto}.message.assistant{align-self:flex-start;background-color:var(--bg-message-assistant);color:var(--text-primary);border:1px solid var(--border-light)}.message p{margin:.5rem 0}.message p:first-child{margin-top:0}.message p:last-child{margin-bottom:0}.message ul,.message ol{margin:.5rem 0;padding-left:1.5rem}.message li{margin:.25rem 0}.message strong{font-weight:600}.message img{max-width:100%;border-radius:8px;margin:.5rem 0}.message code{background-color:#0000001a;padding:.2rem .4rem;border-radius:4px;font-family:Monaco,Courier New,monospace;font-size:.9em}.message.user code{background-color:#fff3}.message pre{background-color:#0000000d;padding:1rem;border-radius:8px;overflow-x:auto;margin:.5rem 0}.message.user pre{background-color:#ffffff26}.message pre code{background-color:transparent;padding:0}.input-container{position:sticky;bottom:0;padding:2.5rem 1rem 1rem;display:flex;gap:.75rem;align-items:flex-end;max-width:800px;margin:0 auto;width:100%;z-index:10}.input-container:before{content:"";position:absolute;inset:0;background:linear-gradient(to bottom,transparent 0%,var(--bg-primary) 50%);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);mask-image:linear-gradient(to bottom,transparent 0%,black 40%);-webkit-mask-image:linear-gradient(to bottom,transparent 0%,black 40%);pointer-events:none;z-index:-1}.input-wrapper{flex:1;background-color:var(--bg-secondary);border:1px solid var(--border-medium);border-radius:24px;padding:.5rem 1rem;display:flex;align-items:center;min-height:44px;transition:border-color .2s,box-shadow .2s}.input-wrapper:focus-within{border-color:var(--accent-primary);box-shadow:0 0 0 1px var(--accent-primary)}.input-container textarea{flex:1;padding:0;border:none;font-family:inherit;font-size:1rem;resize:none;min-height:24px;max-height:200px;background:transparent;line-height:1.5;color:var(--text-primary)}.input-container textarea::placeholder{color:var(--text-secondary)}.input-container textarea:focus{outline:none}.input-container textarea:disabled{background-color:transparent;cursor:not-allowed;opacity:.7}.input-container button{width:44px;height:44px;padding:0;background-color:var(--accent-primary);color:var(--text-inverse);border:none;border-radius:50%;cursor:pointer;transition:background-color .2s;display:flex;align-items:center;justify-content:center;flex-shrink:0}.input-container button:hover:not(:disabled){background-color:var(--accent-hover)}.input-container button:disabled{background-color:var(--accent-disabled);cursor:not-allowed;opacity:.6}.input-container button svg{width:20px;height:20px}@media(max-width:768px){.chat-header{padding:.875rem 1rem}.chat-header h1{font-size:1.125rem}.messages-container{padding:1.5rem .75rem 7rem}.message{max-width:85%}.input-container{padding:.75rem;max-width:100%}.input-wrapper{border-radius:20px}.input-container button{width:36px;height:36px}.input-container button svg{width:18px;height:18px}}@media(max-width:480px){.messages-container{padding:1rem .5rem 6rem}.message{max-width:90%;padding:.875rem 1rem}.input-container{padding:.5rem}}.typing-indicator{align-self:flex-start;background-color:var(--bg-message-assistant);border:1px solid var(--border-light);padding:1rem 1.25rem;border-radius:18px;max-width:320px;display:flex;gap:.75rem;align-items:center}.typing-indicator-simple{max-width:80px;gap:.25rem;justify-content:center}.typing-indicator-simple span{width:8px;height:8px;background-color:var(--text-secondary);border-radius:50%;display:inline-block;animation:typingBounce 1.4s infinite ease-in-out}.typing-indicator-simple span:nth-child(2){animation-delay:.2s}.typing-indicator-simple span:nth-child(3){animation-delay:.4s}.typing-indicator-text{color:var(--text-secondary);font-size:.95rem;animation:messageSlideIn .4s ease-out}@keyframes messageSlideIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.typing-indicator-shimmer{position:relative;overflow:hidden}.typing-indicator-shimmer:after{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);animation:shimmer 2s infinite}@keyframes shimmer{0%{left:-100%}to{left:100%}}@keyframes typingBounce{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-4px)}}