body {
    margin: 2rem;
    font-family: sans-serif;
    background-color: #fafafa;
    color: #333;
}

h1 {
    font-size: 1.6rem;
    margin-bottom: 1rem;
}

.logo {
    width: 120px;
    display: block;
    margin-bottom: 1.5rem;
}

.sample-image {
    display: block;
    width: min(100%, 520px);
    height: auto;
    margin-bottom: 1.5rem;
    border-radius: 4px;
}

#helloBtn,
#uploadForm button {
    padding: 0.5rem 1rem;
    font-size: 1rem;
    background-color: #0066cc;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

#helloBtn:hover,
#uploadForm button:hover {
    background-color: #004c99;
}

#result,
#uploadResult {
    margin-top: 1rem;
    font-weight: bold;
}

.upload-section {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid #ddd;
}

.upload-section h2 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

#uploadForm {
    display: grid;
    gap: 0.75rem;
    max-width: 420px;
}

#fileInput {
    font-size: 1rem;
}