body {
    font-family: system-ui, sans-serif;
    display: flex;
    justify-content: center;
    padding-top: 50px;
    background: #f4f4f9;
    color: #333;
}
.container {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    text-align: center;
    max-width: 500px;
}
input[type="file"] {
    margin: 1.5rem 0;
    width: 100%;
}
button {
    background: #0051c3;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    width: 100%;
}
button:disabled {
    background: #ccc;
    cursor: not-allowed;
}
#status {
    margin-top: 1rem;
    font-weight: 500;
    color: #555;
}
a {
    display: inline-block;
    margin-top: 1rem;
    color: #0051c3;
    text-decoration: none;
    font-weight: bold;
}
a:hover {
    text-decoration: underline;
}