*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:Arial, sans-serif;
}

body{
    background:#f3f5f7;
    padding:20px;
}

.container{
    background:#fff;
    border-radius:10px;
    padding:20px;
    box-shadow:0 2px 10px rgba(0,0,0,0.1);
}

h2{
    margin-bottom:20px;
}

.top-bar{
    display:flex;
    align-items:center;
    gap:10px;
    margin-bottom:20px;
}

#stopBtn{
    background:#e53935;
    color:white;
    border:none;
    padding:10px 15px;
    border-radius:5px;
    cursor:pointer;
}

#convertBtn{
    background:#2962ff;
    color:white;
    border:none;
    padding:10px 15px;
    border-radius:5px;
    cursor:pointer;
}

textarea{
    width:100%;
    height:150px;
    border:1px solid #ddd;
    border-radius:8px;
    padding:10px;
    margin-bottom:20px;
    resize:none;
}

table{
    width:100%;
    border-collapse:collapse;
    background:white;
}

table th{
    background:#f5f5f5;
    padding:12px;
    text-align:left;
    border-bottom:1px solid #ddd;
}

table td{
    padding:12px;
    border-bottom:1px solid #eee;
}

tr:hover{
    background:#fafafa;
}