/* ── KEYFRAMES ────────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes slideRight {
  from { opacity: 0; transform: translateX(-16px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: .8; }
  50%       { transform: scale(1.08); opacity: 1; }
}
@keyframes spinDiamond {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position:  200% 0; }
}
@keyframes countUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes borderPulse {
  0%, 100% { border-color: var(--border); }
  50%       { border-color: var(--accent); }
}

/* ── ENTRY ANIMATIONS ─────────────────────────────────────── */
.anim-fade-up {
  opacity: 0;
  animation: fadeUp .5s ease forwards;
}
.anim-fade-in {
  opacity: 0;
  animation: fadeIn .4s ease forwards;
}
.anim-slide-right {
  opacity: 0;
  animation: slideRight .45s ease forwards;
}

/* Stagger delays */
.delay-1 { animation-delay: .08s; }
.delay-2 { animation-delay: .16s; }
.delay-3 { animation-delay: .24s; }
.delay-4 { animation-delay: .32s; }
.delay-5 { animation-delay: .40s; }
.delay-6 { animation-delay: .48s; }

/* ── SCROLL-TRIGGERED REVEAL ──────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .55s ease, transform .55s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-left {
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity .5s ease, transform .5s ease;
}
.reveal-left.visible { opacity: 1; transform: translateX(0); }

/* Staggered reveal children */
.reveal-group > * {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .45s ease, transform .45s ease;
}
.reveal-group.visible > *:nth-child(1) { opacity:1; transform:none; transition-delay:.00s; }
.reveal-group.visible > *:nth-child(2) { opacity:1; transform:none; transition-delay:.08s; }
.reveal-group.visible > *:nth-child(3) { opacity:1; transform:none; transition-delay:.16s; }
.reveal-group.visible > *:nth-child(4) { opacity:1; transform:none; transition-delay:.24s; }
.reveal-group.visible > *:nth-child(5) { opacity:1; transform:none; transition-delay:.32s; }
.reveal-group.visible > *:nth-child(6) { opacity:1; transform:none; transition-delay:.40s; }

/* ── QUEST MARKER PULSE ───────────────────────────────────── */
.quest-pulse {
  display: inline-block;
  animation: pulse 2.4s ease-in-out infinite;
}

/* ── DAILY CARD SHIMMER (loading state) ───────────────────── */
.shimmer {
  background: linear-gradient(
    90deg,
    var(--surface-3) 25%,
    var(--surface-2) 50%,
    var(--surface-3) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.8s ease infinite;
}

/* ── HOVER LIFT ───────────────────────────────────────────── */
.hover-lift {
  transition: transform var(--t), box-shadow var(--t);
}
.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--sh-md);
}

/* ── ACCENT LINE UNDERLINE ────────────────────────────────── */
.underline-accent {
  text-decoration: none;
  background-image: linear-gradient(var(--accent), var(--accent));
  background-position: 0 100%;
  background-repeat: no-repeat;
  background-size: 0 2px;
  transition: background-size .3s ease;
}
.underline-accent:hover { background-size: 100% 2px; text-decoration: none; }

/* ── SPINNING LOGO MARK ───────────────────────────────────── */
.spin-on-hover:hover { animation: spinDiamond .5s ease; }

/* ── ACTIVE QUEST NODE BORDER ─────────────────────────────── */
.quest-node--active {
  animation: borderPulse 2s ease-in-out infinite;
}

/* ── PAGE INTRO STAGGER ───────────────────────────────────── */
.page-intro > * {
  opacity: 0;
  animation: fadeUp .55s ease forwards;
}
.page-intro > *:nth-child(1) { animation-delay: .05s; }
.page-intro > *:nth-child(2) { animation-delay: .13s; }
.page-intro > *:nth-child(3) { animation-delay: .21s; }
.page-intro > *:nth-child(4) { animation-delay: .29s; }
.page-intro > *:nth-child(5) { animation-delay: .37s; }

/* ── CARD FLIP HINT ───────────────────────────────────────── */
@keyframes tapHint {
  0%   { transform: scale(1); }
  40%  { transform: scale(.96); }
  100% { transform: scale(1); }
}
.flip-card:not(.flipped):hover .flip-card__front {
  animation: tapHint .4s ease;
}

/* ── REDUCED MOTION ───────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .anim-fade-up,
  .anim-fade-in,
  .anim-slide-right { animation: none; opacity: 1; }
  .reveal, .reveal-left { transition: none; opacity: 1; transform: none; }
  .reveal-group > * { transition: none; opacity: 1; transform: none; }
}