body,select,textarea{color:var(--color-text)}.results-title,footer,header{text-align:center}:root{--font-primary:'Poppins',sans-serif;--color-bg:#f0f4f8;--color-bg-card:rgba(255, 255, 255, 0.75);--color-text:#1e293b;--color-text-light:#475569;--color-border:#cbd5e1;--color-primary:#4f46e5;--color-primary-dark:#4338ca;--color-primary-gradient:linear-gradient(90deg, #6366f1, #4f46e5);--color-secondary-bg:#e2e8f0;--color-secondary-hover:#cbd5e1;--color-danger-bg:#ef4444;--color-danger-hover:#dc2626;--color-utility-copy:#10b981;--color-utility-copy-hover:#059669;--color-utility-download:#0d9488;--color-utility-download-hover:#0f766e;--color-error:#dc2626;--shadow-light:0 4px 6px rgba(0, 0, 0, 0.05);--shadow-medium:0 10px 15px rgba(0, 0, 0, 0.1);--shadow-large:0 25px 50px rgba(0, 0, 0, 0.15)}*,::after,::before{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-primary);background-color:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;display:flex;justify-content:center;align-items:flex-start;min-height:100vh;padding:1.5rem}.form-label,.select-wrapper::after,footer{color:var(--color-text-light)}#tts-form,.container{display:flex;flex-direction:column;gap:1.5rem}.container{width:100%;max-width:650px}.tool-card{background-color:var(--color-bg-card);backdrop-filter:blur(10px);border-radius:1.25rem;padding:1.5rem;box-shadow:var(--shadow-medium);transition:transform .3s,box-shadow .3s;border:1px solid rgba(255,255,255,.5)}.tool-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-large)}h1{font-size:2rem;font-weight:700}.error-message,.form-label,footer{font-size:.875rem}footer a{color:var(--color-primary);text-decoration:none;font-weight:500}footer a:hover{text-decoration:underline}.form-label{display:block;margin-bottom:.5rem;font-weight:500}select,textarea{width:100%;padding:.75rem;border-radius:.5rem;background-color:#f8fafc;border:2px solid var(--color-border);font-family:inherit;font-size:1rem;transition:border-color .2s,box-shadow .2s}select:focus,textarea:focus{outline:0;border-color:var(--color-primary);box-shadow:0 0 0 3px rgba(79,70,229,.2)}textarea{resize:vertical;min-height:120px}.select-wrapper{position:relative}.select-wrapper::after{content:'▼';font-size:.8rem;position:absolute;right:1rem;top:50%;transform:translateY(-50%);pointer-events:none}select{appearance:none;-webkit-appearance:none}.error-message{margin-top:.25rem;color:var(--color-error);min-height:1.25rem}.controls-grid{display:grid;gap:1rem}.actions-container,.utility-buttons{display:flex;flex-direction:column;gap:.75rem}#playback-controls{display:flex;gap:.75rem}#playback-controls .btn{flex-grow:1}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1.25rem;border-radius:.5rem;border:none;font-family:inherit;font-size:1rem;font-weight:600;cursor:pointer;transition:transform .2s,box-shadow .2s,background-color .2s;-webkit-tap-highlight-color:transparent}.btn:hover{transform:scale(1.05)}.btn:active{transform:scale(1);transition-duration:.1s}.btn:disabled{opacity:.6;cursor:not-allowed;transform:scale(1)}.btn svg{width:1.25em;height:1.25em}.btn-primary{background:var(--color-primary-gradient);color:#fff;box-shadow:var(--shadow-light)}.btn-primary:hover:not(:disabled){box-shadow:0 7px 10px rgba(79,70,229,.2)}.btn-secondary{background-color:var(--color-secondary-bg);color:var(--color-text)}.btn-secondary:hover:not(:disabled){background-color:var(--color-secondary-hover)}.btn-danger{background-color:var(--color-danger-bg);color:#fff}.btn-danger:hover:not(:disabled){background-color:var(--color-danger-hover)}.results-section{border-top:1px solid var(--color-border);margin-top:1.5rem;padding-top:1.5rem}.results-title{font-size:.875rem;font-weight:600;color:var(--color-text-light);margin-bottom:1rem}.btn-utility-copy{background-color:var(--color-utility-copy);color:#fff}.btn-utility-copy:hover:not(:disabled){background-color:var(--color-utility-copy-hover)}.btn-utility-download{background-color:var(--color-utility-download);color:#fff}.btn-utility-download:hover:not(:disabled){background-color:var(--color-utility-download-hover)}#spinner-icon{display:none}.spinner{animation:1s linear infinite spin}@keyframes spin{from{transform:rotate(0)}to{transform:rotate(360deg)}}input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:8px;background:var(--color-secondary-bg);border-radius:5px;outline:0;transition:opacity .2s}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:20px;height:20px;background:var(--color-primary);cursor:pointer;border-radius:50%;border:2px solid #fff}input[type=range]::-moz-range-thumb{width:20px;height:20px;background:var(--color-primary);cursor:pointer;border-radius:50%;border:2px solid #fff}:focus-visible{outline:3px solid var(--color-primary);outline-offset:2px}select:focus-visible,textarea:focus-visible{outline:0}@media (min-width:640px){.container,.tool-card{padding:2.5rem}h1{font-size:2.5rem}.controls-grid{grid-template-columns:1fr 1fr}.controls-grid>div:last-child{grid-column:1/-1}.actions-container{flex-direction:row;align-items:center}#playback-controls{margin-left:auto}.utility-buttons{flex-direction:row}.utility-buttons>.btn{flex-grow:1}}