Celestial Magician Duo

Create an extremely detailed anime fantasy illustration of two celestial magicians sitting close together in a star-filled observatory. The scene features exactly two characters: a young witch with long wavy {argument name="hair color" default="soft pink-lavender"} hair and violet eyes on the left, and a young wizard with tousled deep navy-blue hair and blue eyes on the right. Both are seated curled up on the floor with knees drawn in, leaning toward each other with a quiet melancholic expression, looking toward the viewer. Dress them in elaborate matching astral mage outfits in {argument name="main outfit color" default="midnight navy blue"}, black, silver, and gold: flowing embroidered cloaks covered in constellations, star chains, crescent moon charms, gemstone brooches, dangling celestial jewelry, ornate cuffs, lace ruffles, high boots, layered capes, and fine metallic filigree. The left character wears a very large pointed witch hat decorated with a prominent blue gemstone, starburst ornament, silver chains, tiny stars, moons, and constellation embroidery. The right character wears a formal celestial cloak with gold-trimmed shoulder cape and dangling astrolabe-like charms. Set them inside a grand magical astronomy chamber with tall pale columns, arching gold celestial framework, hanging orreries, crescent moons, star pendants, armillary spheres, and glowing astrological circles. The floor is glossy deep blue with a luminous circular zodiac and constellation diagram beneath them. The background sky is dark indigo with many stars, planetary rings, moon phases, a large crescent moon, a half moon, and intricate circular star charts radiating behind the characters. Add a small handwritten signature-like text {argument name="signature text" default="S.mar"} near the upper left. Use a highly polished gpt-image-2 anime art style: delicate faces, soft luminous shading, intricate linework, jewel-like highlights, cool blue-purple palette, sparkling magical particles, romantic gothic celestial atmosphere, symmetrical composition, vertical 4:5 canvas, ultra-detailed accessories, no modern objects, no watermark other than the small signature.