/* Spawn — editorial surface motion (WFN-inspired, zone-aware) */

:root {
  --spawn-wfn-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --spawn-wfn-duration: 0.55s;
}

/* Page-level route transitions */
body.spawn-route-enter .screen.active {
  animation: spawn-surface-in var(--spawn-wfn-duration) var(--spawn-wfn-ease) both;
}
body.spawn-route-back .screen.active {
  animation: spawn-surface-back var(--spawn-wfn-duration) var(--spawn-wfn-ease) both;
}

body.spawn-route-enter .stack-screen.open,
body.spawn-route-back .stack-screen.open {
  animation: spawn-stack-in var(--spawn-wfn-duration) var(--spawn-wfn-ease) both;
}

/* Split-character headings (reuse in app chrome) */
.spawn-split-heading {
  font-family: var(--font-body);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.05;
}
.spawn-char {
  display: inline-block;
  opacity: 0;
  transform: translateY(100%);
  animation: spawn-char-rise 0.65s var(--spawn-wfn-ease) calc(var(--char-i, 0) * 0.03s + 0.06s) forwards;
}
.spawn-char--space {
  width: 0.28em;
}

/* WFN-style filter pills (discover rail, account tags) */
.spawn-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  background: transparent;
  color: rgba(255, 255, 255, 0.62);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition:
    border-color 0.35s var(--spawn-wfn-ease),
    color 0.35s var(--spawn-wfn-ease),
    background 0.35s var(--spawn-wfn-ease),
    transform 0.35s var(--spawn-wfn-ease);
}
.spawn-pill:hover,
.spawn-pill.is-active {
  border-color: rgba(255, 255, 255, 0.32);
  color: #fff;
  background: rgba(255, 255, 255, 0.04);
}
.spawn-pill:active {
  transform: scale(0.98);
}
.spawn-pill__count {
  opacity: 0.45;
  font-variant-numeric: tabular-nums;
}

/* Editorial link row (View project pattern) */
.spawn-editorial-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 0;
  border: none;
  background: transparent;
  color: inherit;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  cursor: pointer;
  transition: gap 0.35s var(--spawn-wfn-ease);
}
.spawn-editorial-link:hover {
  gap: 18px;
}
.spawn-editorial-link__arrow {
  transition: transform 0.35s var(--spawn-wfn-ease);
}
.spawn-editorial-link:hover .spawn-editorial-link__arrow {
  transform: translateX(4px);
}

/* Zone handoff — minimal shell eases into themed surfaces */
.zone-discover.spawn-zone-enter,
.zone-main.spawn-zone-enter,
.zone-lfg.spawn-zone-enter,
.zone-account.spawn-zone-enter {
  animation: spawn-zone-bloom 0.8s var(--spawn-wfn-ease) both;
}

@keyframes spawn-surface-in {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes spawn-surface-back {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes spawn-stack-in {
  from { opacity: 0; transform: translateX(18px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes spawn-char-rise {
  from { opacity: 0; transform: translateY(100%); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes spawn-zone-bloom {
  from { filter: saturate(0.85) brightness(0.92); }
  to { filter: none; }
}

@media (prefers-reduced-motion: reduce) {
  body.spawn-route-enter .screen.active,
  body.spawn-route-back .screen.active,
  body.spawn-route-enter .stack-screen.open,
  body.spawn-route-back .stack-screen.open,
  .spawn-char,
  .zone-discover.spawn-zone-enter,
  .zone-main.spawn-zone-enter,
  .zone-lfg.spawn-zone-enter,
  .zone-account.spawn-zone-enter {
    animation: none !important;
  }
}