:root {
  --rk-polish-glow: rgba(255, 224, 112, 0.7);
  --rk-polish-teal: rgba(16, 118, 95, 0.68);
  --rk-polish-ink: rgba(9, 35, 31, 0.88);
}

.rk-polished * {
  -webkit-tap-highlight-color: rgba(245, 191, 68, 0.22);
}

.rk-polished button,
.rk-polished [role="button"],
.rk-polished .answer-button,
.rk-polished .quiz-option,
.rk-polished .choice-button {
  touch-action: manipulation;
}

.rk-polished button:not(:disabled),
.rk-polished [role="button"],
.rk-polished a {
  transition:
    transform 140ms ease,
    filter 180ms ease,
    box-shadow 180ms ease,
    background-color 180ms ease;
}

.rk-polished button:not(:disabled):active,
.rk-polished [role="button"]:active,
.rk-polished a:active {
  transform: translateY(1px) scale(0.99);
}

.rk-polished :focus-visible {
  outline: 3px solid rgba(255, 205, 86, 0.92);
  outline-offset: 3px;
}

.rk-polish-card {
  position: relative;
  isolation: isolate;
  overflow: hidden;
}

.rk-polish-card::after {
  content: "";
  position: absolute;
  inset: -45%;
  z-index: 1;
  pointer-events: none;
  opacity: 0;
  background:
    linear-gradient(115deg, transparent 34%, rgba(255,255,255,0.38) 47%, transparent 60%),
    radial-gradient(circle at 18% 12%, rgba(255, 225, 115, 0.26), transparent 22%);
  transform: translateX(-38%) rotate(9deg);
  transition: opacity 260ms ease, transform 520ms ease;
}

.rk-polish-card:hover::after,
.rk-polish-card:focus-within::after {
  opacity: 1;
  transform: translateX(26%) rotate(9deg);
}

.rk-polished .rk-polish-card:hover,
.rk-polished .rk-polish-card:focus-within {
  filter: saturate(1.04) brightness(1.015);
}

.rk-polish-card > * {
  position: relative;
  z-index: 2;
}

.rk-polished .answer-button.correct,
.rk-polished .answer-button.answer-correct,
.rk-polished .bio-option.correct,
.rk-polished .bio-option.is-own-correct,
.rk-polished .feedback.right,
.rk-polished .feedback.correct,
.rk-polished .bio-feedback.correct {
  box-shadow:
    0 0 0 2px rgba(126, 223, 178, 0.26),
    0 16px 34px rgba(11, 111, 74, 0.12);
  animation: rk-answer-pop 360ms ease-out;
}

.rk-polished .answer-button.wrong,
.rk-polished .answer-button.answer-wrong,
.rk-polished .bio-option.wrong,
.rk-polished .bio-option.is-own-wrong,
.rk-polished .feedback.wrong,
.rk-polished .bio-feedback.wrong {
  box-shadow:
    0 0 0 2px rgba(241, 147, 119, 0.22),
    0 16px 34px rgba(156, 50, 31, 0.08);
}

.rk-polished .progress-track span,
.rk-polished .progress-bar span,
.rk-polished .bar i,
.rk-polished .focus-bar span {
  background-size: 180% 100%;
  animation: rk-progress-sheen 3.8s ease-in-out infinite;
}

.rk-polish-layer {
  position: fixed;
  inset: 0;
  z-index: 2147483000;
  pointer-events: none;
  overflow: hidden;
  contain: strict;
}

.rk-spark,
.rk-score-pop,
.rk-mini-toast {
  position: fixed;
  left: 0;
  top: 0;
  pointer-events: none;
  will-change: transform, opacity;
}

.rk-spark {
  width: var(--rk-size, 8px);
  height: var(--rk-size, 8px);
  border-radius: 999px;
  background:
    radial-gradient(circle at 32% 28%, #fff 0 16%, transparent 17%),
    radial-gradient(circle, var(--rk-color, #f4c450) 0 62%, transparent 63%);
  box-shadow: 0 0 16px var(--rk-color, #f4c450);
  transform: translate3d(var(--rk-x, 0px), var(--rk-y, 0px), 0) scale(0.74);
  animation: rk-spark-pop 620ms ease-out forwards;
}

.rk-score-pop {
  padding: 5px 9px;
  border-radius: 999px;
  color: #0b3028;
  background: rgba(255, 244, 187, 0.96);
  box-shadow: 0 10px 24px rgba(23, 49, 39, 0.22);
  font-size: 0.84rem;
  font-weight: 950;
  transform: translate3d(var(--rk-x, 0px), var(--rk-y, 0px), 0) scale(0.92);
  animation: rk-score-float 980ms ease-out forwards;
}

.rk-mini-toast {
  max-width: min(280px, calc(100vw - 28px));
  padding: 9px 12px;
  border: 1px solid rgba(255,255,255,0.72);
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(135deg, rgba(13, 84, 74, 0.92), rgba(21, 129, 95, 0.9));
  box-shadow: 0 18px 42px rgba(8, 33, 28, 0.26);
  font-size: 0.86rem;
  font-weight: 900;
  transform: translate3d(var(--rk-x, 16px), var(--rk-y, 16px), 0);
  animation: rk-toast-inout 2100ms ease-in-out forwards;
}

@keyframes rk-spark-pop {
  0% {
    opacity: 0;
    transform: translate3d(var(--rk-x, 0px), var(--rk-y, 0px), 0) scale(0.38);
  }
  16% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform:
      translate3d(
        calc(var(--rk-x, 0px) + var(--rk-dx, 0px)),
        calc(var(--rk-y, 0px) + var(--rk-dy, -42px)),
        0
      )
      scale(0.08);
  }
}

@keyframes rk-score-float {
  0% {
    opacity: 0;
    transform: translate3d(var(--rk-x, 0px), var(--rk-y, 0px), 0) scale(0.86);
  }
  18% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translate3d(var(--rk-x, 0px), calc(var(--rk-y, 0px) - 34px), 0) scale(1.03);
  }
}

@keyframes rk-toast-inout {
  0% {
    opacity: 0;
    transform: translate3d(var(--rk-x, 16px), calc(var(--rk-y, 16px) + 10px), 0);
  }
  14%,
  78% {
    opacity: 1;
    transform: translate3d(var(--rk-x, 16px), var(--rk-y, 16px), 0);
  }
  100% {
    opacity: 0;
    transform: translate3d(var(--rk-x, 16px), calc(var(--rk-y, 16px) - 8px), 0);
  }
}

@keyframes rk-answer-pop {
  0% { transform: scale(0.98); }
  60% { transform: scale(1.018); }
  100% { transform: scale(1); }
}

@keyframes rk-progress-sheen {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@media (prefers-reduced-motion: reduce) {
  .rk-polished button,
  .rk-polished [role="button"],
  .rk-polished a,
  .rk-polish-card::after {
    transition: none !important;
  }

  .rk-spark,
  .rk-score-pop,
  .rk-mini-toast {
    display: none !important;
  }

  .rk-polished .answer-button.correct,
  .rk-polished .answer-button.answer-correct,
  .rk-polished .bio-option.correct,
  .rk-polished .bio-option.is-own-correct,
  .rk-polished .feedback.right,
  .rk-polished .feedback.correct,
  .rk-polished .bio-feedback.correct,
  .rk-polished .progress-track span,
  .rk-polished .progress-bar span,
  .rk-polished .bar i,
  .rk-polished .focus-bar span {
    animation: none !important;
  }
}