body {
font-family: system-ui, sans-serif;
background: #0f0f0f;
color: #ffffff;
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
}

.container {
max-width: 420px;
width: 100%;
padding: 30px;
background: #161616;
border-radius: 12px;
text-align: center;
}

h1 {
margin-bottom: 5px;
}

.subtitle {
font-size: 14px;
opacity: 0.7;
margin-bottom: 25px;
}

label {
display: block;
margin-top: 15px;
text-align: left;
font-size: 14px;
}

select, input {
width: 100%;
padding: 10px;
margin-top: 5px;
border-radius: 6px;
border: none;
}

button {
margin-top: 20px;
width: 100%;
padding: 12px;
background: #ffffff;
color: #000;
border: none;
border-radius: 6px;
font-weight: bold;
cursor: pointer;
}

button:hover {
opacity: 0.9;
}

#result {
margin-top: 20px;
background: #222;
padding: 15px;
border-radius: 8px;
}

.hidden {
display: none;
}

footer {
margin-top: 20px;
font-size: 12px;
opacity: 0.5;
}