/* Upgrade shop (R5): js/ui/upgrades.js. Tokens and components from docs/ui-style-guide.md;
   layout from docs/ui/mockups/app-shell.html (.upg-row tiles) and components.html (.upcard). */

.monolith-right-col { display: flex; flex-direction: column; gap: var(--sp-4); min-width: 0; }

.upgrade-shop { padding: var(--sp-4); }
.upg-head { margin-bottom: var(--sp-3); }
.upg-head h3 { margin: 0; font-size: var(--fs-18); }
.upg-sub { font-family: var(--font-ui); font-weight: 500; font-size: var(--fs-13); color: var(--text-3); margin-inline-start: var(--sp-1); }

/* Tile row: scrolls inside its own container, never the page */
.upg-row { display: flex; gap: var(--sp-2); overflow-x: auto; padding: 2px 2px 6px; scrollbar-width: thin; }
.upg {
  flex: 0 0 auto; width: 56px; height: 56px; display: grid; place-items: center; position: relative;
  border-radius: var(--r-1); background: var(--bg-1); border: 1px solid var(--line-2);
  color: var(--text-1); font-size: 1.4rem; line-height: 1; cursor: pointer; padding: 0;
  transition: border-color var(--dur-2) var(--ease-out), background var(--dur-1) var(--ease-out);
}
.upg:hover { background: var(--bg-3); }
.upg:focus-visible { outline: 2px solid var(--aether); outline-offset: 2px; }
.upg.aff { border-color: var(--gold); box-shadow: 0 0 0 1px var(--gold-dim), 0 0 12px var(--gold-dim); }
.upg.lock { opacity: 0.5; filter: grayscale(1); }
.upg.is-selected { background: var(--bg-4); outline: 2px solid var(--aether); outline-offset: 1px; }
.upg .p { position: absolute; inset-inline-start: 0; bottom: -1px; height: 3px; width: 0; background: var(--gold); border-radius: 0 0 6px 6px; transition: width var(--dur-3) var(--ease-out); }
.upg .upg-mark { position: absolute; inset-inline-end: 3px; top: 2px; font-size: var(--fs-11); color: var(--gold); line-height: 1; }
.upg.lock .upg-mark { color: var(--text-3); }
.upg-more { font-size: var(--fs-13); font-weight: 700; color: var(--text-2); font-family: var(--font-ui); }

/* Full card for the selected tile (components.html "R5 upgrade cards") */
.upcard {
  display: grid; grid-template-columns: 44px 1fr auto; gap: var(--sp-3); align-items: center;
  margin-top: var(--sp-3); padding: var(--sp-3); border-radius: var(--r-2);
  background: var(--bg-2); border: 1px solid var(--line-1);
  transition: border-color var(--dur-2) var(--ease-out);
}
.upcard[hidden] { display: none; }
.upcard.aff { border-color: color-mix(in srgb, var(--gold) 50%, transparent); }
.upcard.is-locked { opacity: 0.85; }
.upcard-text { min-width: 0; }
.upcard .n { font-weight: 700; font-size: var(--fs-13); color: var(--text-1); }
.upcard .e { font-size: var(--fs-12); color: var(--text-2); }
.upcard .req { font-size: var(--fs-11); color: var(--text-3); overflow-wrap: anywhere; }
.upg-togo { font-size: var(--fs-12); color: var(--text-3); white-space: nowrap; }
.upg-empty { font-size: var(--fs-12); color: var(--text-3); }

@media (max-width: 639px) {
  .upcard { grid-template-columns: 40px 1fr; }
  .upcard .btn, .upcard .upg-togo { grid-column: 2; justify-self: start; }
  .upcard .icon-tile { width: 40px; height: 40px; }
}

/* Reduced motion (style guide 6, R24): no fills sliding, no state transitions */
:root[data-motion="reduced"] .upg,
:root[data-motion="reduced"] .upg .p,
:root[data-motion="reduced"] .upcard { transition: none; }
@media (prefers-reduced-motion: reduce) {
  :root:not([data-motion="full"]) .upg,
  :root:not([data-motion="full"]) .upg .p,
  :root:not([data-motion="full"]) .upcard { transition: none; }
}

/* R48: purchase feedback (js/ui/buyFx.js). Chip rises from the Buy button; the count pops. */
.buy-chip {
  position: fixed; z-index: 60; transform: translate(-50%, -100%); pointer-events: none;
  font-family: var(--font-ui); font-weight: 800; color: var(--gold); text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
  white-space: nowrap; animation: buy-chip-rise 700ms var(--ease-out) both;
}
.buy-chip.size-1 { font-size: var(--fs-13); }
.buy-chip.size-2 { font-size: var(--fs-16); }
.buy-chip.size-3 { font-size: var(--fs-18); }
@keyframes buy-chip-rise {
  0% { opacity: 0; margin-top: 0; }
  15% { opacity: 1; }
  100% { opacity: 0; margin-top: -34px; }
}
.count-pop { display: inline-block; animation: count-pop 120ms var(--ease-pop); }
@keyframes count-pop { 0% { transform: scale(1); } 50% { transform: scale(1.25); } 100% { transform: scale(1); } }
/* A tap that did nothing: a dim outline, no motion, held briefly (also under reduced motion) */
.tap-denied { outline: 2px solid var(--text-3); outline-offset: -2px; }
/* Reduced motion: the global rule in tokens.css drops the animations, so the chip shows in place
   for its 700 ms and the count changes without a pop. */