/* 全体のスタイル */
body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f5;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

/* ログインコンテナ */
.login-container, .welcome-container {
    background-color: white;
    padding: 2em;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    text-align: center;
}

h2 {
    color: #333;
    margin-bottom: 1em;
}

label {
    display: block;
    margin: 1em 0 0.5em;
    color: #555;
}

input {
    width: 100%;
    padding: 0.5em;
    margin-bottom: 1em;
    border: 1px solid #ccc;
    border-radius: 5px;
}

button {
    width: 100%;
    padding: 0.75em;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #45a049;
}

.alert {
    color: red;
    margin-top: 1em;
}