body {
    font-family: Arial, sans-serif;
    background-color: #e8f5e9; /* 明るい緑の背景 */
    color: #2e7d32; /* 深緑のテキスト */
    margin: 0;
    padding: 0;
}

h1, h2 {
    text-align: center;
    color: #1b5e20;
}

form {
    max-width: 500px;
    margin: 20px auto;
    background-color: #ffffff; /* 白い背景 */
    border: 1px solid #c8e6c9; /* 薄緑の枠線 */
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
}

input[type="file"] {
    display: none;
}

label.file-label {
    display: inline-block;
    background-color: #66bb6a; /* 明るい緑 */
    color: white;
    padding: 10px 15px;
    border-radius: 4px;
    cursor: pointer;
    text-align: center;
    font-weight: bold;
    margin-bottom: 10px;
}

label.file-label:hover {
    background-color: #388e3c; /* 少し暗い緑 */
}

input[type="text"],
input[type="number"],
button {
    width: calc(100% - 20px);
    margin: 10px 0;
    padding: 10px;
    font-size: 16px;
    border: 1px solid #c8e6c9; /* 緑の枠線 */
    border-radius: 4px;
}

input[type="radio"] {
    display: none;
}

input[type="radio"] + label {
    display: inline-block;
    padding: 10px 15px;
    margin-right: 5px;
    background-color: #c8e6c9; /* 薄緑 */
    color: #2e7d32; /* 深緑 */
    border-radius: 20px;
    cursor: pointer;
    font-weight: bold;
    transition: background-color 0.3s ease;
}

input[type="radio"]:checked + label {
    background-color: #66bb6a; /* 選択時の明るい緑 */
    color: white;
}

input[type="radio"] + label:hover {
    background-color: #81c784; /* ホバー時の色 */
}

button {
    background-color: #66bb6a; /* 明るい緑 */
    color: white;
    border: none;
    cursor: pointer;
    font-weight: bold;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #388e3c; /* 少し暗い緑 */
}

footer {
    text-align: center;
    padding: 10px;
    margin-top: 20px;
    background-color: #1b5e20;
    color: white;
}