body {
    font-family: "Helvetica Neue", sans-serif;
    background-color: #f7f9fc;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.login-container {
    background: white;
    padding: 2em;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    text-align: center;
    width: 300px;
}

h1 {
    margin-bottom: 1em;
    font-size: 1.5em;
    color: #333;
}

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

.login-container h1 img{
	width:80%;
}

form {
    display: flex;
    flex-direction: column;
    gap: 1em;
}

input[type="text"],
input[type="password"] {
    padding: 0.5em;
    font-size: 1em;
    border: 1px solid #ccc;
    border-radius: 5px;
}

button {
    padding: 0.6em;
    background-color: #007bff;
    border: none;
    color: white;
    font-size: 1em;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}

.error {
    color: red;
    margin-bottom: 1em;
}


/* ▼▼ 追加：スマホなど小画面用レスポンシブ調整 ▼▼ */
@media (max-width: 480px) {
    .login-container {
        padding: 1.5em 1em;
    }

    h1 {
        font-size: 1.3em;
    }

    input[type="text"],
    input[type="password"],
    button {
        font-size: 0.95em;
    }
}