*{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:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh}.app{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}.container{background:#fff;border-radius:20px;box-shadow:0 20px 60px #0000004d;padding:40px;max-width:600px;width:100%}header{text-align:center;margin-bottom:30px}header h1{color:#333;font-size:2.5rem;margin-bottom:10px;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}header p{color:#666;font-size:1rem}.form{display:flex;flex-direction:column;gap:20px}.form-row{display:grid;gap:20px}.form-row-2{grid-template-columns:1fr 1fr}.form-row-1{grid-template-columns:1fr}@media (max-width: 600px){.form-row-2{grid-template-columns:1fr}}.form-group{display:flex;flex-direction:column;gap:8px}.form-group label{font-weight:600;color:#333;font-size:.95rem}.form-group input,.form-group select{padding:12px 16px;border:2px solid #e0e0e0;border-radius:8px;font-size:1rem;transition:all .3s ease;font-family:inherit}.form-group input:focus,.form-group select:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.form-group select{background-color:#fff;cursor:pointer}.submit-btn{padding:14px 24px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:8px;font-size:1.1rem;font-weight:600;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease;margin-top:10px}.submit-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 10px 20px #667eea4d}.submit-btn:disabled{opacity:.6;cursor:not-allowed}.error-message{margin-top:20px;padding:12px 16px;background:#fee;color:#c33;border-radius:8px;border-left:4px solid #c33}.result-card{margin-top:30px;padding:30px;background:linear-gradient(135deg,#f5f7fa,#c3cfe2);border-radius:12px;text-align:center}.result-card h2{color:#333;margin-bottom:20px;font-size:1.5rem}.price-display{font-size:3rem;font-weight:700;color:#667eea;margin-bottom:25px;text-shadow:0 2px 4px rgba(0,0,0,.1)}.result-details{display:flex;flex-direction:column;gap:12px;margin-top:20px;text-align:left}.detail-item{display:flex;justify-content:space-between;padding:10px;background:#fff;border-radius:6px}.detail-item .label{color:#666;font-weight:500}.detail-item .value{color:#333;font-weight:600}.price-suggestions{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:25px 0;padding:0}.suggestion-item{padding:20px;background:#fff;border-radius:8px;text-align:center;box-shadow:0 2px 8px #0000001a}.suggestion-item.listing-price{border-top:4px solid #4CAF50}.suggestion-item.bottom-price{border-top:4px solid #ff9800}.suggestion-label{font-size:.9rem;color:#666;margin-bottom:10px;font-weight:500}.suggestion-value{font-size:1.8rem;font-weight:700;color:#333;margin-bottom:5px}.suggestion-item.listing-price .suggestion-value{color:#4caf50}.suggestion-item.bottom-price .suggestion-value{color:#ff9800}.suggestion-note{font-size:.75rem;color:#999;font-style:italic}.chart-container{margin-top:30px;padding:20px;background:#fff;border-radius:8px;box-shadow:0 2px 8px #0000001a}@media (max-width: 600px){.container{padding:30px 20px}header h1{font-size:2rem}.price-display{font-size:2.5rem}.price-suggestions{grid-template-columns:1fr;gap:15px}.suggestion-value{font-size:1.5rem}.chart-container{padding:15px}}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}