.app{min-height:100vh;display:flex;flex-direction:column;background:linear-gradient(135deg,#667eea,#764ba2)}.header{text-align:center;padding:2rem 1rem 1rem;color:#fff;background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.2)}.header h1{margin:0 0 .5rem;font-size:2.5rem;font-weight:700;text-shadow:0 2px 4px rgba(0,0,0,.3)}.header p{margin:0;opacity:.9;font-size:1.1rem}.chat-container{flex:1;display:flex;flex-direction:column;max-width:800px;width:100%;margin:0 auto;padding:1rem;gap:1rem}.messages{flex:1;display:flex;flex-direction:column;gap:1rem;padding:1rem;background:#fffffff2;border-radius:20px;box-shadow:0 8px 32px #0000001a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2);overflow-y:auto;max-height:600px}.welcome{text-align:center;padding:3rem 1rem;color:#666}.welcome h2{margin:0 0 1rem;color:#333;font-size:1.8rem}.welcome p{margin:0;font-size:1.1rem}.message{display:flex;gap:.75rem;align-items:flex-start;animation:slideIn .3s ease-out}.message.user{flex-direction:row-reverse}.message-avatar{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}.message.user .message-avatar{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.message.assistant .message-avatar{background:linear-gradient(135deg,#ffecd2,#fcb69f);color:#333}.message-content{max-width:70%;padding:.875rem 1.125rem;border-radius:18px;line-height:1.5;word-wrap:break-word}.message.user .message-content{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-bottom-right-radius:4px}.message.assistant .message-content{background:#f8f9fa;color:#333;border:1px solid #e9ecef;border-bottom-left-radius:4px}.typing{display:flex;gap:4px;align-items:center}.typing span{width:8px;height:8px;border-radius:50%;background:#666;animation:typing 1.4s infinite ease-in-out}.typing span:nth-child(1){animation-delay:-.32s}.typing span:nth-child(2){animation-delay:-.16s}.input-area{background:#fffffff2;border-radius:20px;padding:1rem;box-shadow:0 8px 32px #0000001a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2)}.input-wrapper{display:flex;gap:.75rem;align-items:flex-end}.input-field{flex:1;min-height:48px;max-height:120px;padding:.875rem 1rem;border:2px solid #e9ecef;border-radius:12px;font-size:1rem;font-family:inherit;resize:none;outline:none;transition:border-color .2s}.input-field:focus{border-color:#667eea}.input-field:disabled{opacity:.6;cursor:not-allowed}.send-button{width:48px;height:48px;border:none;border-radius:12px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;font-size:1.2rem;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center}.send-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.send-button:disabled{opacity:.5;cursor:not-allowed;transform:none}@keyframes slideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes typing{0%,80%,to{transform:scale(0);opacity:.5}40%{transform:scale(1);opacity:1}}@media (max-width: 768px){.header h1{font-size:2rem}.chat-container{padding:.5rem}.messages{max-height:500px}.message-content{max-width:85%}}*{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:#f5f5f5}#root{min-height:100vh}