* {
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background: #f3f5f7;
    margin: 0;
    padding: 40px;
}

.upload-container {
    max-width: 600px;
    margin: auto;
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

h1 {
    margin-top: 0;
}

input[type=file] {
    display: block;
    margin-bottom: 15px;
}

button {
    padding: 12px 20px;
    cursor: pointer;
    border: none;
    background: #2563eb;
    color: white;
    border-radius: 6px;
}

button:hover {
    background: #1d4ed8;
}

progress {
    width: 100%;
    margin-top: 20px;
}

[data-upload-status] {
    margin-top: 15px;
    font-size: 14px;
}