Build a massive dark medieval castl...

Build a massive dark medieval castle on a rocky mountain cliff. The castle should have towering black stone walls, sharp spires, and a gothic architectural style. Include large fortified gates, tall watchtowers, and narrow windows with iron bars. Add eerie details such as glowing lava flows, dimly lit torches, chains, and broken structures. Surround the castle with a foggy atmosphere and dead trees to create a haunted feeling. Include a central keep, multiple layers of walls, bridges, and a deep moat (can be lava or dark water). Use mostly dark blocks like blackstone, deepslate, basalt, and obsidian. The build should feel intimidating, ancient, and abandoned — like a cursed fortress from a dark fantasy world. Add ruined sections, hidden underground chambers, secret passages, and a thro