:root{font-family: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}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;justify-content:center;align-items:center;min-width:320px;min-height:100vh;background-color:#242424;overflow:hidden}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}a:hover{color:#747bff}button{background-color:#f9f9f9}.container{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;font-family:Arial,sans-serif}.contador-texto{font-size:5rem;font-weight:700;transition:color .3s ease;margin:20px 0}.positivo{color:#3b82f6}.negativo{color:#ef4444}.zero{color:#fff}.button-group{display:flex;gap:15px;justify-content:center}.btn{padding:12px 24px;font-size:1rem;cursor:pointer;border:none;border-radius:8px;background-color:#333;color:#fff;transition:transform .1s}.btn:active{transform:scale(.95)}.btn-reset{background-color:#fc0;color:#000;font-weight:700}