*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #10a37f;--primary-hover: #0d8c6a;--secondary-color: #6e6e80;--background: #f7f7f8;--card-background: #ffffff;--text-primary: #2d3748;--text-secondary: #718096;--border-color: #e2e8f0;--error-color: #e53e3e;--success-color: #38a169;--info-color: #3182ce;--shadow: 0 4px 6px rgba(0, 0, 0, .07);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .1)}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;padding:2rem 1rem;color:var(--text-primary)}.container{max-width:800px;margin:0 auto}header{text-align:center;margin-bottom:2rem;color:#fff}h1{font-size:2.5rem;font-weight:700;margin-bottom:.5rem;text-shadow:2px 2px 4px rgba(0,0,0,.2)}.subtitle{font-size:1.1rem;opacity:.95}.card{background:var(--card-background);border-radius:16px;padding:2.5rem;box-shadow:var(--shadow-lg);margin-bottom:2rem}.form-group{margin-bottom:1.5rem}label{display:flex;align-items:center;font-weight:600;margin-bottom:.5rem;color:var(--text-primary);font-size:.95rem}.label-icon{margin-right:.5rem;font-size:1.2rem}.input-field,.textarea-field{width:100%;padding:.75rem 1rem;border:2px solid var(--border-color);border-radius:8px;font-size:1rem;transition:all .3s ease;font-family:inherit}.input-field:focus,.textarea-field:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #10a37f1a}.textarea-field{resize:vertical;min-height:120px}.help-text{display:block;margin-top:.25rem;font-size:.85rem;color:var(--text-secondary)}.slider{width:100%;height:8px;border-radius:5px;background:var(--border-color);outline:none;-webkit-appearance:none;-moz-appearance:none;appearance:none}.slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;background:var(--primary-color);cursor:pointer;transition:all .3s ease}.slider::-webkit-slider-thumb:hover{transform:scale(1.2);box-shadow:0 0 0 8px #10a37f1a}.slider::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--primary-color);cursor:pointer;border:none;transition:all .3s ease}.slider::-moz-range-thumb:hover{transform:scale(1.2);box-shadow:0 0 0 8px #10a37f1a}.speed-labels{display:flex;justify-content:space-between;margin-top:.5rem;font-size:.85rem;color:var(--text-secondary)}.btn-primary,.btn-secondary{width:100%;padding:1rem;font-size:1.1rem;font-weight:600;border:none;border-radius:8px;cursor:pointer;transition:all .3s ease;font-family:inherit}.btn-primary{background:var(--primary-color);color:#fff;margin-top:1rem}.btn-primary:hover:not(:disabled){background:var(--primary-hover);transform:translateY(-2px);box-shadow:var(--shadow)}.btn-primary:disabled{background:var(--secondary-color);cursor:not-allowed;opacity:.6}.btn-secondary{background:#fff;color:var(--primary-color);border:2px solid var(--primary-color);margin-top:1rem}.btn-secondary:hover{background:var(--primary-color);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow)}.cost-estimate{background:linear-gradient(135deg,#ebf8ff,#e6fffa);border:2px solid var(--info-color);border-radius:8px;padding:1rem;margin-top:1rem;animation:fadeIn .3s ease-in}.cost-estimate-content{display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem}.cost-label{font-weight:600;color:var(--text-primary);font-size:1rem}.cost-value{font-size:1.5rem;font-weight:700;color:var(--info-color)}.cost-info{display:block;font-size:.85rem;color:var(--text-secondary);font-style:italic}@keyframes fadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.error-message{background:#fff5f5;border:2px solid var(--error-color);color:var(--error-color);padding:1rem;border-radius:8px;margin-top:1rem;font-weight:500}.audio-player{margin-top:2rem;padding:1.5rem;background:#f0fdf4;border:2px solid var(--success-color);border-radius:8px}.audio-player h3{color:var(--success-color);margin-bottom:1rem;font-size:1.2rem}.audio-controls{width:100%;margin-bottom:1rem}footer{text-align:center;color:#fff;font-size:.9rem;opacity:.9}footer a{color:#fff;text-decoration:underline}footer a:hover{opacity:.8}@media (max-width: 768px){body{padding:1rem .5rem}h1{font-size:2rem}.card{padding:1.5rem}.btn-primary,.btn-secondary{font-size:1rem}}