/* World Choir — First-time / replay onboarding */

.wc-onboarding {
  position: fixed;
  inset: 0;
  z-index: 400;
  display: none;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
}

.wc-onboarding.is-open {
  display: block;
}

body.is-onboarding-open {
  overflow: hidden;
}

.wc-onboarding__stage {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 100dvh;
  overflow: hidden;
}

.wc-onboarding__tap {
  appearance: none;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  width: 100%;
  height: 100%;
  padding: 0;
  margin: 0;
  cursor: pointer;
  text-align: left;
  display: block;
  position: relative;
  overflow: hidden;
}

.wc-onboarding__card {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  min-height: 100dvh;
  padding:
    max(28px, env(safe-area-inset-top))
    28px
    max(28px, env(safe-area-inset-bottom))
    28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background:
    radial-gradient(90% 60% at 50% 0%, rgba(78, 197, 232, 0.08), transparent 58%),
    #000000;
  opacity: 1;
  transform: translate3d(0, 0, 0);
  transition:
    opacity 0.22s ease,
    transform 0.22s ease;
  will-change: opacity, transform;
}

.wc-onboarding__card.is-enter-forward {
  opacity: 0;
  transform: translate3d(18px, 0, 0);
}

.wc-onboarding__card.is-enter-back {
  opacity: 0;
  transform: translate3d(-18px, 0, 0);
}

.wc-onboarding__card.is-exit-left {
  opacity: 0;
  transform: translate3d(-18px, 0, 0);
  pointer-events: none;
}

.wc-onboarding__card.is-exit-right {
  opacity: 0;
  transform: translate3d(18px, 0, 0);
  pointer-events: none;
}

.wc-onboarding__card.is-active {
  opacity: 1;
  transform: translate3d(0, 0, 0);
  z-index: 1;
}

@media (prefers-reduced-motion: reduce) {
  .wc-onboarding__card {
    transition: opacity 0.12s ease !important;
    transform: none !important;
  }

  .wc-onboarding__card.is-enter-forward,
  .wc-onboarding__card.is-enter-back,
  .wc-onboarding__card.is-exit-left,
  .wc-onboarding__card.is-exit-right {
    transform: none !important;
  }
}

.wc-onboarding__progress {
  margin: 8px 0 0;
  text-align: center;
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.wc-onboarding__content {
  max-width: 26rem;
  width: 100%;
  margin: 0 auto;
  padding: clamp(36px, 9vh, 72px) 0 32px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: stretch;
  min-height: 0;
}

.wc-onboarding__title {
  margin: 0 0 18px;
  font-family: var(--font-sans);
  font-size: clamp(1.55rem, 6vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--accent-aurora);
  text-transform: uppercase;
  /* Keep 1-line and 2-line titles occupying the same vertical space */
  min-height: calc(2 * 1.15 * clamp(1.55rem, 6vw, 2rem));
}

.wc-onboarding__body {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.wc-onboarding__copy {
  margin: 0 0 14px;
  font-size: 0.98rem;
  line-height: 1.55;
  color: var(--text-secondary);
  font-weight: 400;
  max-width: 28em;
}

.wc-onboarding__copy:last-of-type {
  margin-bottom: 0;
}

.wc-onboarding__closing {
  margin: 22px 0 0;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent-aurora);
}

.wc-onboarding__hint {
  margin: 28px 0 0;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.wc-onboarding__logo-wrap {
  display: flex;
  justify-content: center;
  padding-bottom: max(8px, env(safe-area-inset-bottom));
}

.wc-onboarding__logo {
  width: 72px;
  height: auto;
  opacity: 0.92;
  display: block;
}

.wc-onboarding__back {
  appearance: none;
  position: absolute;
  top: max(14px, env(safe-area-inset-top));
  left: 12px;
  z-index: 3;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--text-muted);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease;
}

.wc-onboarding__back[hidden] {
  display: none;
}

.wc-onboarding__back svg {
  width: 20px;
  height: 20px;
}

.wc-onboarding__back:hover,
.wc-onboarding__back:focus-visible {
  color: var(--text-primary);
  background: var(--surface-lift);
  outline: none;
}

.wc-onboarding__close {
  appearance: none;
  position: absolute;
  top: max(18px, env(safe-area-inset-top));
  right: 18px;
  z-index: 3;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 10px 4px;
  cursor: pointer;
  transition: color 0.2s ease;
}

.wc-onboarding__close:hover,
.wc-onboarding__close:focus-visible {
  color: var(--text-primary);
  outline: none;
}