{
  "_comment": "SHOP UI — the buy/sell (and buyback) screen over the shop clip (data/shopui.json). LAYOUT: the two 4×4 grids sit side by side (SELL = the player's cargo bays on the LEFT, BUY = the shop's stock on the RIGHT), a center column carries the live NET preview + Confirm/Clear, and a tab bar up top toggles Buy/Sell ↔ Buyback (Buyback is disabled until the player has SOLD something this session). The panels are semi-transparent so the shop clip shows through; items + text are full alpha. GEOMETRY (slot/gap/gridCols/gridRows/centerW) is primitives the code (js/ui/shop/ShopView.js) lays out against the live scene size — not pixel positions. The ECONOMY itself (prices, stock) is Economy.js + data/goods.json + data/economy.json; this file is only presentation.",
  "enabled": true,

  "tabs": {
    "_comment": "The sub-menu (two buttons). Buy/Sell opens the trade panel; Buyback opens the buyback panel (goods sold this session, session-local only). `disabledAlpha` is the Buyback dim until the player has sold something.",
    "buySell": "Buy/Sell",
    "buyback": "Buyback",
    "w": 184, "h": 46, "gap": 14,
    "y": 44,
    "activeAccent": "#00e5ff",
    "disabledAlpha": 0.34
  },

  "panel": {
    "_comment": "The semi-transparent panel behind each side's grid — the shop clip shows through it (bgAlpha < 1) but the goods + labels sit at full alpha on top.",
    "bgColor": "#0a1120",
    "bgAlpha": 0.70,
    "border": "#22405f",
    "pad": 16,
    "title": { "fontSize": 21, "color": "#eaf6ff", "h": 34 }
  },

  "grid": {
    "_comment": "The 4×4 grid shared by both sides (data/economy.json → cargo.maxSlots = 16 slots). SELL: the first `capacity` cells are live cargo bays (one good each), the rest are locked (the hold's upgrade room). BUY: the shop's stock (12–16) fills the first N, the rest are empty.",
    "cols": 4, "rows": 4,
    "slot": 96, "gap": 10,
    "centerW": 208
  },

  "slot": {
    "_comment": "A single bay/stock cell. `bg` is the cell plate, `selected` the SELL-check highlight (a bay marked to sell), `stepper` the BUY quantity control. `lockAlpha` dims the locked/empty cells. Colors follow the theme (cyan selection, gold buy, green sell, magenta = bad).",
    "bgColor": "#0e1728",
    "border": "#1d2e4c",
    "selected": "#00e5ff",
    "lockAlpha": 0.30,
    "iconScale": 0.58,
    "name": { "fontSize": 11, "color": "#eaf6ff" },
    "price": { "fontSize": 12, "sell": "#7ce8a4", "buy": "#ffc94d" },
    "emptyLabel": "—",
    "lockLabel": "locked"
  },

  "stepper": {
    "_comment": "The BUY-side quantity stepper (− n +). Clicking −/+ adjusts that good's buy quantity; the live preview recalcs. The sell side is bay-based (each bay = 1 unit, tap to check), so it has no stepper.",
    "fontSize": 19,
    "color": "#eaf6ff",
    "btn": "#7d92c4",
    "activeColor": "#00e5ff"
  },

  "preview": {
    "_comment": "The live NET-credits readout in the center column. Positive (you're up) = green, negative (you'd spend past your credits / it's a net spend) = the value shown; the Confirm button is disabled while the trade is invalid (can't go negative, hold overflows).",
    "label": "NET",
    "labelColor": "#7d92c4",
    "labelFontSize": 13,
    "valueFontSize": 34,
    "posColor": "#7ce8a4",
    "negColor": "#ff2d6f"
  },

  "buttons": {
    "_comment": "Confirm (execute the trade) + Clear (reset this side's selection) — they appear once the player starts checking/stepping items. `disabled` dims Confirm while the trade is invalid. `back` is a reserved return-to-menu label (the deck's Leave Shop is the real exit). Separate *Label (text) and *Accent (color) keys so they don't collide.",
    "w": 158, "h": 54,
    "confirmLabel": "Confirm",
    "clearLabel": "Clear",
    "backLabel": "‹ Menu",
    "accent": "#00e5ff",
    "confirmAccent": "#7ce8a4",
    "clearAccent": "#7d92c4",
    "disabled": "#7d92c4"
  },

  "animation": {
    "_comment": "Reveal: the SELL grid slides in from the left, the BUY grid from the right, the center column fades up (data/shopui.json → animation). A short stagger per row keeps it feeling assembled rather than popped.",
    "slideMs": 340,
    "staggerMs": 26,
    "ease": "Cubic.Out"
  }
}