Create a book back cover that continues the dark and mysterious medieval theme o

Create a book back cover that continues the dark and mysterious medieval theme of the front cover. The scene is set in the courtyard of a castle at night, with the same stormy, cloud-covered sky seen on the front. The moonlight is faint, casting long, soft shadows across the cobblestone ground. In the foreground, there is a stone well with ivy creeping up its sides, and beside it, a small cluster of blue thistle flowers, their vibrant blue and violet hues standing out against the muted colors of the stone and greenery. The courtyard is framed by tall, weathered castle walls, with a large, wooden door slightly ajar, suggesting an invitation or a mystery beyond. The atmosphere is quiet and eerie, with a sense of something hidden or waiting to be discovered. The book’s synopsis is placed in the center, written in a clear, Gothic-style font that matches the front cover, with a simple medieval border around it to frame the text.

Avoid using bright or modern colors that would disrupt the medieval, mysterious atmosphere. Do not include any characters or animals that could distract from the focus on the setting. Avoid making the scene overly dark, so that the details remain visible and clear. The design should not be cluttered with too many elements, and the font used for the text should not be overly ornate or difficult to read. Avoid any modern or futuristic imagery that does not fit the medieval theme, and steer clear of overly fantastical elements that would take away from the subtle, eerie tone.