Celtic cat goddess, mystical, ancient mythology, slender figure, flowing white dress with intricate Celtic knot patterns, long curly red hair adorned with golden circlet, emerald green eyes with vertical pupils, delicate features, gentle smile, surrounded by misty fog, moonlight, standing in a lush forest, ancient ruins in the background, vines and moss covering the stones, mystical aura, warm soft light, cinematic composition, 3/4 view, fantasy atmosphere.