// ═══ shop.js ═══
// ============================================================
//  SHOP.JS — Shop state management (canvas draws each frame)
// ============================================================

function openShop() {
  if (G.gameOver) return;
  G.shopOpen = true;
  _shopScrollY = 0;
  setPaused(true, false);
}

function closeShop() {
  G.shopOpen = false;
  _shopScrollY = 0;
  setPaused(false);
}

function setShopTab(tab) {
  G.shopTab = tab;
  _shopScrollY = 0;
}

function renderShop() { /* canvas draws shop each frame via drawShopOverlay() */ }