Mermaid-inspired cinematic fashion portrait with crystal sphere

Ultra-realistic cinematic fashion portrait of a woman with a mermaid tail seated in a dark minimal environment resembling deep water; asymmetrical pose: torso slightly rotated, one shoulder higher than the other; one arm placed behind the body for support, the other extended forward holding a heavy solid crystal sphere; head turned slightly away from the camera, gaze distant; the tail curves diagonally across the frame from lower left toward center, breaking symmetry. Body & transformation: The human body ends at the hips; from the hips downward there are NO human legs; both legs are fully fused into a single continuous mermaid tail; seamless organic transition with no seams, no separation, no costume feel. Tail structure: Long, powerful and elegant tail with natural curvature; thick near the base and tapering smoothly; positioned diagonally to create cinematic flow. Tail surface & materials: Skin-like semi-translucent surface with very fine irregular scales; organic texture, not patterned; subtle depth under the surface. Bioluminescence (IMPORTANT): The tail emits a soft internal glow (bioluminescent), light coming from within the structure of the tail, not from outside; strongest glow concentrated in the lower half and fin, gradually fading toward the hips; diffused light scattering through the semi-translucent surface; soft halo around the tail edges; no harsh shine, no plastic effect. Fin details: Large flowing fin with layered semi-transparent membranes; edges irregular and delicate; fin glows brighter than the rest of the tail with soft diffused light. Crystal sphere: Solid heavy crystal sphere (not hollow); dense optical glass; visible weight in the hand; strong refraction and internal distortion; cool bluish reflections; fingers slightly tense supporting the weight. Fabric & styling: Ultra-light translucent fabric draped loosely and asymmetrically; soft irregular folds; partially interacting with the glowing tail. Hair & styling: Natural volume, slightly imperfect, softly displaced; no symmetry. Makeup: Cool-toned minimal editorial makeup; soft luminous skin; muted lips; delicate eyes. Composition: Cinematic medium-tight shot; subject off-center; strong diagonal composition (head > torso > glowing tail); tail occupies foreground; large dark negative space; slight crop for a more dramatic framing. Lighting: Low-key cinematic lighting; primary illumination comes from the glowing tail (internal light source); additional subtle cold blue rim light outlining the silhouette; minimal soft fill on the face; deep shadows in the background; no visible external light sources. Atmosphere: Soft underwater-like haze; subtle volumetric diffusion catching the blue glow; faint particles in the air. Color & grading: Deep cold blue palette with cyan highlights; saturated blues; high dynamic contrast between glowing tail and dark background; slightly underexposed cinematic grading. Image texture & treatment: Shot on full-frame camera, 50mm lens; shallow depth of field; fine cinematic grain; soft highlight roll-off; realistic textures; no CGI or illustration look. Mood: Dark, mystical, cinematic, with a strong bioluminescent focal point. Negative cues: no human legs, no hollow sphere, no external glow only, no plastic shine, no symmetry, not CGI, not illustration. HEX VALUES: ['#03060c', '#08121f', '#0d2036', '#14324d', '#1b4568', '#255f8f', '#3f86b8', '#6db2dd', '#b8def2', '#5f9fc9', '#2b556f', '#0b1622']