:root{font-family:Inter,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}*{box-sizing:border-box;margin:0;padding:0}body{margin:0;min-height:100vh}#root{max-width:1280px;margin:0 auto;padding:2rem;text-align:center}.app{min-height:100vh}.logo{height:6em;padding:1.5em;will-change:filter}header{display:flex;flex-direction:column;align-items:center;padding-bottom:2rem}h1{font-size:2.5rem;margin-bottom:.5rem;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.subtitle{color:#888;font-size:1rem}.card{background:#1a1a1a;border-radius:12px;padding:1.5rem;margin-bottom:1.5rem;text-align:left}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.card-title{font-size:1rem;font-weight:600;color:#fff}select{background:#333;color:#fff;border:1px solid #444;border-radius:6px;padding:.5rem 1rem;font-size:.9rem;cursor:pointer}select:focus{outline:none;border-color:#667eea}textarea{width:100%;min-height:150px;padding:1rem;background:#0a0a0a;border:1px solid #333;border-radius:8px;color:#fff;font-size:1rem;font-family:inherit;resize:vertical}textarea:focus{outline:none;border-color:#667eea}textarea::placeholder{color:#666}.btn{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:.75rem 2rem;font-size:1rem;font-weight:600;border-radius:8px;cursor:pointer;transition:transform .2s,box-shadow .2s;margin-top:1rem}.btn:hover{transform:translateY(-2px);box-shadow:0 4px 20px #667eea66}.btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.result{background:#0a0a0a;border:1px solid #333;border-radius:8px;padding:1.5rem;margin-top:1.5rem;text-align:left}.result-label{font-size:.85rem;color:#888;margin-bottom:.5rem}.result-content{font-size:1rem;line-height:1.6;white-space:pre-wrap}.copy-btn{background:transparent;border:1px solid #444;color:#888;padding:.4rem 1rem;font-size:.85rem;border-radius:6px;cursor:pointer;margin-left:1rem}.copy-btn:hover{border-color:#667eea;color:#667eea}.loading{display:flex;align-items:center;justify-content:center;padding:2rem;color:#888}.spinner{width:24px;height:24px;border:3px solid #333;border-top-color:#667eea;border-radius:50%;animation:spin 1s linear infinite;margin-right:.5rem}@keyframes spin{to{transform:rotate(360deg)}}.error{background:#2a1a1a;border:1px solid #e74c3c;color:#e74c3c;padding:1rem;border-radius:8px;margin-top:1rem}@media (max-width: 600px){#root{padding:1rem}h1{font-size:1.8rem}.card{padding:1rem}}