{
  "mode": "Built-in image_gen",
  "background": "Use case: stylized-concept. Asset type: widescreen background painting for Arcanum anime fantasy card game. Create a polished cinematic 16:9 environment matte painting, no UI, no text, no logo. Ancient celestial sanctuary suspended above clouds at twilight, monumental black basalt arches and pillars with sculpted aged gold blades and amber crystals. Central distant radiant eight-point solar astrolabe, dusky blue atmospheric distance, luminous amber sunset spilling through the arches. Sophisticated hand-painted anime game background with precise architectural forms and restrained painterly texture, high-end collectible card game world. Composition specifically for a playable 3D table to be composited in front: leave lower center 60% softly shaded open atmospheric space with no foreground objects; architectural silhouettes rise at far left and right edges; strongest detail and focal amber portal in upper center-right. No floor/table/card shapes in foreground. Color palette obsidian #17141a, old gold #bc8441, bright pale gold #f2d59b, amber #e99434, distant slate #43536b. Strong depth, believable lighting, elegant magical mood, no excessive microdetail, no purple neon, no characters.",
  "assets": [
    [
      "crest",
      "Use case: stylized-concept. Asset type: transparent PNG emblem for Arcanum anime fantasy game HUD. One sculpted ornate eight-point solar crest with a faceted amber gemstone in the center, aged gold blades over charcoal black metal, beveled painterly edges, sophisticated high-end anime RPG inventory icon. Straight-on orthographic view, square composition centered object occupies 85% of image, no perspective. Four main long elegant pointed rays, four short secondary rays, delicate circular gold ring behind crystal, strong silhouette readable at 64 pixels. Warm polished gold highlights, restrained orange emissive gem. Transparent background including outside silhouette. No text, letters, numbers, checkerboard, ground, shadow rectangle, excessive micro-detail. A single usable cutout game asset, not a mockup."
    ],
    [
      "plaque",
      "Use case: stylized-concept. Asset type: transparent PNG wide ornamental fantasy HUD plate. One horizontal 5:2 proportion elegant blackened metal plaque with sculpted gold frame, symmetrical tapered pointed ends, large EMPTY matte near-black central field for overlaying readable game text. Inspired by artisan gold blades and crystal-cut gold edges, high-end anime fantasy card game UI. Restrained amber gem centered in small top crest. Minimal detailing, heavy ornament ONLY on outer ends and outer edge, 80 percent of inner area plain dark. Straight-on orthographic view, no perspective, no text, no numbers, no lettering, no scene, no pedestal. Genuinely transparent background outside the metal plaque. Crisp professional raster game asset with painterly warmth."
    ],
    [
      "seal",
      "Use case: stylized-concept. Asset type: transparent PNG magic summoning decal for a 3D anime fantasy card arena. A perfectly circular gold and ivory arcane summoning seal, front on orthographic view, centered on square canvas. Eight elegant radial blade motifs and concentric rings, tasteful glyph-like abstract strokes but NO legible text. Thin luminous warm-gold linework, sparse bright sparks, center mostly empty transparent space, fine soft amber halo at edges. Symmetrical, refined, bold shapes readable at small sizes, no dense microdetail. Genuine transparent background and transparent interior between lines. No stone disk, no scene, no solid black background, no perspective. High-end anime game VFX."
    ],
    [
      "cardback",
      "Use case: stylized-concept. Asset type: full-bleed card back texture for an anime fantasy TCG called Arcanum. Vertical 2:3 composition, perfectly straight-on flat orthographic view, no perspective, no mockup. Symmetric black obsidian surface with very subtle slate texture, an elegant strong continuous gold beveled perimeter with clipped decorative corners, central large eight-point gold compass star surrounding one radiant amber diamond crystal, concentric sparse delicate gold rings behind crest, long blade motifs echo the perimeter. Polished sculpted aged gold, deep clean black negative space, orange light faintly spilling from crystal. Balanced detailed professional card back design, no readable words or numbers, no lettering, no other objects. All four corners visible, full rectangle filled edge to edge."
    ],
    [
      "obsidian-table",
      "Use case: stylized-concept. Asset type: diffuse tabletop texture for a 3D fantasy card game, square, perfectly flat top-down orthographic image, no perspective. Polished dark obsidian slab with subtly cloudy charcoal slate, fine widely spaced natural amber-gold mineral veins, extremely restrained weathering and elegant shallow carved golden corner inlays confined to the outermost 8 percent. Center and inner 80 percent clean dark stone with large calm regions for placing cards. Material is black obsidian, charcoal #24232a with bronze subtle veins #806239, no white marble, no giant glowing center, no emblem, no characters, no text, no game slots, no cards. High-end hand-painted anime game PBR albedo texture, lit evenly without baked shadows or light streaks. Image fills the entire square edge to edge, four simple corners, tasteful minimal geometric gold inlays, must read as solid expensive polished stone not shiny foil."
    ]
  ]
}