.sdt-container{max-width:500px;margin:50px auto;padding:30px;background-color:#000;color:#6200ea;border-radius:15px;box-shadow:0 8px 20px rgba(98,0,234,.3);text-align:center;font-family:Arial,sans-serif}.sdt-container h1{font-size:2.2rem;margin-bottom:10px}.sdt-container p{margin-bottom:20px;color:#bbb}.sdt-input{width:80%;padding:12px;margin:10px 0;border-radius:8px;border:none;background-color:#1a1a1a;color:#fff}.sdt-buttons{display:flex;justify-content:center;gap:10px;margin-top:15px}.sdt-button{padding:12px 25px;background-color:#6200ea;color:#fff;border:none;border-radius:8px;cursor:pointer}.sdt-button.reset{background-color:#bb86fc}.sdt-button:hover{opacity:.85}.sdt-result{margin-top:20px;font-size:1.2rem;font-weight:700;color:#fff}