Загрузка данных

<!DOCTYPE html>
<html lang="ru">
<head>
    <meta charset="UTF-8">
    <title>Simple Shop</title>
    <style>
        body { font-family: sans-serif; margin: 40px; background: #f4f4f4; color: #333; }
        nav { background: #fff; padding: 15px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 5px rgba(0,0,0,0.1); }
        .container { background: #fff; padding: 20px; border-radius: 8px; box-shadow: 0 2px 5px rgba(0,0,0,0.1); }
        .product-grid { display: flex; flex-wrap: wrap; gap: 20px; }
        .product-card { border: 1px solid #ddd; padding: 15px; width: 220px; background: #fff; border-radius: 5px; text-align: center; }
        .product-card img { width: 100%; height: 180px; object-fit: cover; border-radius: 4px; }
        input, textarea { width: 100%; padding: 8px; margin: 5px 0 15px 0; border: 1px solid #ccc; border-radius: 4px; box-sizing: border-box; }
        button { background: #28a745; color: white; border: none; padding: 10px 20px; cursor: pointer; border-radius: 4px; }
        button:hover { background: #218838; }
        .gallery img { width: 120px; height: 120px; object-fit: cover; border: 1px solid #ddd; border-radius: 4px; }
    </style>
</head>
<body>
    <nav>
        <a href="{{ url_for('index') }}">Главная</a>
        {% if user %}
            Вы вошли как: <b>{{ user.username }}</b>
            {% if user.is_admin %} | <a href="{{ url_for('admin') }}">Админка</a>{% endif %}
            <a href="{{ url_for('logout') }}">Выйти</a>
        {% else %}
            <a href="{{ url_for('login') }}">Войти</a> <a href="{{ url_for('register') }}">Регистрация</a>
        {% endif %}
    </nav>

    <div class="container">
        {% with messages = get_flashed_messages() %}
            {% if messages %} {% for m in messages %}<p style="color: red;">{{ m }}</p>{% endfor %} {% endif %}
        {% endwith %}
        {% block content %}{% endblock %}
    </div>
</body>
</html>