/* (既存のスタイルは維持しつつ、以下を追加) */

/* パスワード入力フォーム専用のデザイン */
.password-form-container {
    max-width: 400px;
    margin: 100px auto;
    padding: 30px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    text-align: center;
}

.form-instruction p {
    font-size: 0.95rem;
    color: #666;
    margin-bottom: 25px;
    line-height: 1.8;
}

.form-input-group input[type="password"] {
    width: 100%;
    padding: 15px;
    border: 2px solid #eee;
    border-radius: 8px;
    margin-bottom: 15px;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s;
}

.form-input-group input[type="password"]:focus {
    border-color: #333;
}

.form-input-group input[type="submit"] {
    width: 100%;
    background: #333;
    color: #fff;
    padding: 15px;
    border: none;
    border-radius: 8px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s;
}

.form-input-group input[type="submit"]:hover {
    background: #000;
}

/* モバイル対応 */
@media (max-width: 480px) {
    .password-form-container {
        margin: 50px 20px;
        padding: 20px;
    }
}