Obsidian and Brass Stage Concept Sheet

{
  "type": "information-dense environment concept art setting sheet",
  "format": "wide 16:9 presentation board on warm ivory paper with thin black dividers, editorial Japanese design-document layout",
  "subject": {
    "project_title": "[A案 黒曜石と真鍮の矩形ステージホール]",
    "world_subtitle": "[キリン・アイドルワールド]",
    "environment": "a luxurious rectangular performance stage hall for a fictional idol world, combining Art Deco geometry, black obsidian-like polished stone, brushed brass trim, warm amber lighting, and subtle savanna-inspired motifs",
    "room_purpose": "[live stage, performance hall, ceremony hall]",
    "main_material": "[black obsidian polished stone]",
    "accent_color": "[antique brass and warm amber gold]"
  },
  "layout": {
    "overall": "single-page architectural concept sheet with a left text column, one large central main rendering, smaller view panels on the upper and middle right, a plan diagram, detail callouts, and a color palette along the bottom",
    "sections": [
      {
        "title": "title and concept block",
        "position": "far left top",
        "count": 1,
        "content": "large Japanese title typography, subtitle, and a short concept paragraph describing a rectangular stage hall shaped around black stone and brass, with dense but elegant decorative geometry"
      },
      {
        "title": "基本情報",
        "position": "left column middle",
        "count": 8,
        "items": [
          "用途",
          "場所",
          "空間特性",
          "世界観",
          "想定照明",
          "床材",
          "壁材",
          "天井高・床面寸法・奥行き"
        ]
      },
      {
        "title": "デザインのポイント",
        "position": "left column lower",
        "count": 6,
        "items": [
          "massive black-and-brass main stage gate",
          "warm backlight silhouette effect",
          "geometric wall panels and vertical brass lines",
          "savanna-inspired ornaments and plant accents",
          "strong golden reflections on the polished floor",
          "decorative density to prevent empty background areas"
        ]
      },
      {
        "title": "メインアングルビュー",
        "position": "center large panel",
        "count": 1,
        "description": "symmetrical deep-perspective interior view down the center axis of the hall; glossy black floor with brass inlay grid, tall dark walls, repeated vertical columns, hanging lanterns, ceiling light line, and a luminous golden geometric screen at the far end"
      },
      {
        "title": "別アングル",
        "position": "upper and middle right",
        "count": 3,
        "labels": [
          "別アングル① フロントビュー（正面）",
          "別アングル② ローアングルビュー",
          "別アングル③ サイドビュー（低物オブジェあり）"
        ],
        "description": "three smaller cinematic renderings showing the same hall from front, low-angle, and side perspectives, maintaining matching lighting and material reflections"
      },
      {
        "title": "俯瞰レイアウト（簡易図）",
        "position": "right middle",
        "count": 1,
        "description": "top-down simplified floor plan of a long rectangle with border ornaments, dimension arrows, and notes indicating depth about 45–50 m and opening about 45 m"
      },
      {
        "title": "素材ディテール",
        "position": "bottom center and right",
        "count": 5,
        "items": [
          "floor detail: black polished stone with thin brass inlay lines",
          "backlight and gate detail: golden geometric pattern screen",
          "wall detail: dark vertical decorative panel with savanna/geometric motif",
          "pillar and hanging lantern detail: black stone plus brass ornament and warm glass light",
          "low object detail: stone planter with green plant and brass accent"
        ]
      },
      {
        "title": "カラースキーム",
        "position": "bottom row",
        "count": 8,
        "swatches": [
          "オブシディアンブラック（黒曜石）",
          "エボニーウッド（黒檀）",
          "アンティークブラス（真鍮）",
          "サンドベージュ（漆喰）",
          "テラコッタブラウン（テラコッタ）",
          "ダークアンバー（琥珀）",
          "スレートグレー（石材）",
          "ディープグリーン（大理石）"
        ]
      }
    ]
  },
  "visual_style": {
    "rendering": "high-quality cinematic architectural concept art, realistic digital painting, sharp linework, controlled perspective, glossy reflections, warm golden practical lighting, dark elegant palette",
    "composition": "clean magazine-like design board, dense but readable, beige background, black label tabs with white Japanese text, small captions under detail images, precise grid alignment",
    "avoid": "people, cluttered modern signage, neon colors, unreadable random gibberish, distorted perspective, overly empty background"
  }
}