body {
font-family: Arial, Helvetica, sans-serif;
background: #0e1116;
color: #eaeaea;
margin: 0;
padding: 0;
}


.app {
max-width: 520px;
margin: 40px auto;
padding: 20px;
background: #151a21;
border-radius: 8px;
box-shadow: 0 0 20px rgba(0,0,0,0.4);
}


h1, h2 {
text-align: center;
}


input {
width: 100%;
padding: 14px;
font-size: 18px;
margin-bottom: 16px;
}


ul {
list-style: none;
padding: 0;
}


li {
padding: 10px;
margin-bottom: 6px;
background: #1f2630;
display: flex;
justify-content: space-between;
align-items: center;
}


button {
width: 100%;
padding: 14px;
font-size: 16px;
background: #00b4ff;
color: #000;
border: none;
cursor: pointer;
margin-top: 12px;
}


button:hover {
background: #0091cc;
}


.hidden {
display: none;
}


#status {
margin-top: 12px;
text-align: center;
}