/* Animation system — structural CSS for flips + the celebration headline.
   Motion itself runs via the Web Animations API (js/ui/anim/). */

/* Two-faced 3D flip */
.flip { perspective: 1200px; }
.flip-card {
  position: relative;
  transform-style: preserve-3d;
}
.flip-face {
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}
.flip-face--back {
  position: absolute;
  inset: 0;
  transform: rotateY(180deg);
}
.flip-card.is-flipped { transform: rotateY(180deg); }

/* Per-letter success headline (Bungee, centered, above the feed) */
.anim-headline {
  position: fixed;
  left: 50%;
  top: 40%;
  transform: translate(-50%, -50%);
  display: flex;
  gap: 0.01em;
  z-index: var(--z-flying, 600);
  pointer-events: none;
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 12vw, 4rem);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--c-cyan);
  text-shadow: 0 6px 28px rgba(0, 0, 0, 0.55);
}
.anim-headline__ch {
  display: inline-block;
  will-change: transform, opacity;
}

/* Trivia answer (flip back face) */
.trivia__answer {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 8px; min-height: 180px; padding: 24px 16px; text-align: center;
}
.trivia__answer-mark { font-family: var(--font-display); font-size: 3.2rem; line-height: 1; }
.trivia__answer--correct .trivia__answer-mark { color: var(--c-green-light); }
.trivia__answer--wrong .trivia__answer-mark,
.trivia__answer--timeout .trivia__answer-mark { color: var(--c-pink); }
.trivia__answer-verdict { font-family: var(--font-display); font-size: 1.3rem; color: #fff; }
.trivia__answer-text { color: var(--text-secondary); font-size: 1.05rem; }
.trivia__answer-label {
  display: block; text-transform: uppercase; letter-spacing: 0.08em;
  font-size: 0.7rem; color: var(--text-muted); margin-bottom: 2px;
}
.trivia__answer-points { font-family: var(--font-display); color: var(--c-cyan); font-size: 1.15rem; margin-top: 4px; }

/* OK → hands off to the popcorn intermission. Fades in just after the result
 * reads (trivia flip / poll bars). Shared by trivia + poll. */
.trivia__continue,
.vpoll__continue {
  display: block;
  margin: 14px auto 0;
  min-height: 44px;
  padding: 0 28px;
  border: 0;
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.04em;
  color: #001018;
  background: var(--c-cyan);
  cursor: pointer;
  box-shadow: 0 6px 16px rgba(0, 181, 255, 0.35);
  animation: trivia-continue-in 320ms var(--ease-spring) 480ms both;
}
.trivia__continue:active,
.vpoll__continue:active { transform: scale(0.96); }
.trivia__continue:disabled,
.vpoll__continue:disabled { opacity: 0.6; pointer-events: none; }

@keyframes trivia-continue-in {
  from { opacity: 0; transform: translateY(10px) scale(0.9); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

@media (prefers-reduced-motion: reduce) {
  .flip-card,
  .flip-card.is-flipped { transition: none; }
  .trivia__continue,
  .vpoll__continue { animation: none; }
}