Untitled AI art by @principled-sparrow1

For a book cover i want it really detailed of A dark and atmospheric fantasy book cover with rich, deep red and black tones. Strands of crimson thread or veins of blood intricately weave through ancient, weathered fabric or parchment, glowing faintly with an eerie light. The texture of the weaving looks almost alive, pulsating with magic. Subtle metallic gold or silver accents hint at a mystical or royal significance. The background is shadowy, with hints of arcane symbols, runes, or an ominous, cloudy sky. No characters, just an elegant yet haunting design that conveys mystery and power.