/* ============================================================
   Button shine hover effect
   A soft diagonal gloss sweeps across every button on hover.
   ============================================================ */

/* Low-specificity position hint: any button class that sets its own
   position (e.g. absolutely-positioned close/copy buttons) overrides
   this, so the shine always anchors to the button itself. */
:where(button) {
  position: relative;
}

/* `.tile` bento cards keep their bespoke hover, so they opt out.
   This rule is intentionally additive: it does NOT set `transition` or
   `transform` on the button itself, so each component keeps its own
   bespoke hover easing (opacity / box-shadow fades, etc.). */
button:not(.tile) {
  overflow: hidden;
}

button:not(.tile)::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 60%;
  height: 100%;
  background: linear-gradient(
    100deg,
    transparent 0%,
    rgba(255, 255, 255, 0.45) 50%,
    transparent 100%
  );
  /* Park the gloss off the left edge; animated via transform (composited). */
  transform: translateX(-150%) skewX(-20deg);
  pointer-events: none;
  opacity: 0;
}

button:not(.tile):hover::after {
  animation: btn-shine 0.75s ease;
}

@keyframes btn-shine {
  0% {
    transform: translateX(-150%) skewX(-20deg);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  100% {
    transform: translateX(280%) skewX(-20deg);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  button:not(.tile):hover::after {
    animation: none;
  }
}