/* 全体のフォームコンテナ */
.form-container {
    width: 400px;
    margin: 50px auto;
    padding: 40px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    font-family: 'Arial', sans-serif;
}

/* 見出し */
.form-container h1 {
    text-align: center;
    margin-bottom: 20px;
    font-size: 28px;
    color: #333;
}

/* ソーシャルボタン */
.social-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 15px;
}

.social-buttons button {
    padding: 10px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    color: #fff;
    font-weight: bold;
    font-size: 14px;
}

/* ボタン色 */
.social-buttons .google { background-color: #db4437; }
.social-buttons .facebook { background-color: #3b5998; }
.social-buttons .line { background-color: #00c300; }

/* OR区切り */
.divider {
    text-align: center;
    margin: 15px 0;
    position: relative;
    font-size: 12px;
    color: #888;
}

.divider::before,
.divider::after {
    content: "";
    position: absolute;
    top: 50%;
    width: 40%;
    height: 1px;
    background: #ccc;
}

.divider::before { left: 0; }
.divider::after { right: 0; }

/* 入力フォーム */
form label {
    display: block;
    margin-bottom: 5px;
    font-size: 14px;
    color: #555;
}

form input[type="text"],
form input[type="email"],
form input[type="password"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

/* 送信ボタン */
form button[type="submit"] {
    width: 100%;
    padding: 10px;
    background-color: #007bff;
    border: none;
    border-radius: 4px;
    color: white;
    font-size: 16px;
    cursor: pointer;
}

form button[type="submit"]:hover {
    background-color: #0056b3;
}

/* 下のリンク */
.form-container p {
    font-size: 12px;
    color: #555;
}

.form-container a {
    color: #007bff;
    text-decoration: none;
}

.form-container a:hover {
    text-decoration: underline;
}