:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}*{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}.app{max-width:900px;margin:0 auto;height:100vh;display:flex;flex-direction:column;background:linear-gradient(135deg,#667eea,#764ba2)}.header{background:#fff;padding:25px;text-align:center;box-shadow:0 4px 15px #0000001a;z-index:10}.header h1{margin:0;color:#667eea;font-size:28px;font-weight:700}.header p{margin:8px 0 0;color:#666;font-size:14px}.tracking-section{background:#fff;margin:0;padding:15px 20px;border-bottom:1px solid #eee}.tracking-section h3{color:#333;font-size:16px;margin-bottom:10px}.tracking-list{display:flex;flex-direction:column;gap:8px}.tracking-item{display:flex;align-items:center;gap:12px;background:#f8f9ff;border:1px solid #e0e5ff;border-radius:12px;padding:12px 15px}.item-header{display:flex;align-items:center;gap:8px}.product-name{font-weight:600;color:#333}.status-badge{background:#667eea;color:#fff;padding:2px 8px;border-radius:10px;font-size:11px}.item-details{flex:1;font-size:13px;color:#666}.item-details p{margin:0}.added-time{font-size:11px;color:#999}.delete-btn{background:none;border:1px solid #ff4757;color:#ff4757;padding:4px 12px;border-radius:8px;font-size:12px;cursor:pointer;transition:all .2s}.delete-btn:hover{background:#ff4757;color:#fff}.chat-container{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:15px}.chat-container::-webkit-scrollbar{width:6px}.chat-container::-webkit-scrollbar-track{background:#ffffff1a;border-radius:10px}.chat-container::-webkit-scrollbar-thumb{background:#ffffff4d;border-radius:10px}.message{display:flex;animation:slideIn .3s ease}@keyframes slideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message.user{justify-content:flex-end}.message.ai{justify-content:flex-start}.bubble{max-width:70%;padding:15px 20px;border-radius:20px;font-size:15px;line-height:1.5;word-wrap:break-word;white-space:pre-wrap}.message.user .bubble{background:#667eea;color:#fff;border-bottom-right-radius:5px}.message.ai .bubble{background:#fff;color:#333;box-shadow:0 2px 8px #0000001a;border-bottom-left-radius:5px}.bubble.loading{display:flex;gap:5px;padding:15px 25px}.dot{width:8px;height:8px;border-radius:50%;background:#667eea;animation:bounce 1.4s infinite ease-in-out both}.dot:nth-child(1){animation-delay:-.32s}.dot:nth-child(2){animation-delay:-.16s}@keyframes bounce{0%,80%,to{transform:scale(0);opacity:.5}40%{transform:scale(1);opacity:1}}.input-area{display:flex;gap:10px;padding:20px;background:#fff;box-shadow:0 -2px 10px #0000001a}.input-area input{flex:1;padding:15px 20px;border:2px solid #e0e0e0;border-radius:25px;font-size:15px;transition:all .3s}.input-area input:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.input-area input:disabled{background:#f5f5f5;cursor:not-allowed}.input-area button{padding:15px 35px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:25px;font-weight:700;font-size:15px;cursor:pointer;transition:all .2s;white-space:nowrap}.input-area button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.input-area button:active:not(:disabled){transform:translateY(0)}.input-area button:disabled{opacity:.5;cursor:not-allowed}@media(max-width:768px){.app{max-width:100%}.header h1{font-size:24px}.bubble{max-width:85%}.input-area{padding:15px}.input-area button{padding:15px 25px}}