.ytc-calculator{max-width:500px;margin:20px auto;padding:20px;background:#f9f9f9;border-radius:8px;box-shadow:0 2px 5px rgba(0,0,0,.1)}.ytc-field{margin-bottom:15px}.ytc-field label{display:block;margin-bottom:5px;font-weight:700}.ytc-field input{width:100%;padding:10px;border:1px solid #ddd;border-radius:4px}.ytc-results{margin-top:20px;padding:15px;background:#e9f7ff;border-radius:4px}.ytc-result-row{display:flex;justify-content:space-between;margin-bottom:8px}button{background:#0073aa;color:#fff;border:none;padding:10px 15px;border-radius:4px;cursor:pointer;width:100%}