:root {
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 0.14s;
  --dur: 0.22s;
  --dur-slow: 0.34s;
}

@keyframes mh-fade-up {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes mh-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes mh-scale-in {
  from { opacity: 0; transform: translateY(6px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes mh-sheet-up {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}
@keyframes mh-menu-in {
  from { opacity: 0; transform: translateY(-4px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes mh-shimmer {
  from { background-position: -200% 0; }
  to { background-position: 200% 0; }
}
@keyframes mh-pop {
  0% { transform: scale(1); }
  40% { transform: scale(1.28); }
  100% { transform: scale(1); }
}
@keyframes mh-spin {
  to { transform: rotate(360deg); }
}

.page-enter { animation: mh-fade-up var(--dur-slow) var(--ease-out) both; }

[data-reveal] {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
  will-change: opacity, transform;
}
[data-reveal].in { opacity: 1; transform: none; }

.postcard,
.rail-card,
.card { transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease); }
.postcard:hover { border-color: var(--border-2); }

.btn,
.chip,
.fire-btn,
.rail-link,
.side .it,
.tb,
.modal-close,
.menu button,
.menu a { transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease); }

.btn:active,
.chip:active,
.fire-btn:active { transform: scale(0.96); }

.btn.p:hover { filter: brightness(1.07); }
.btn.o:hover { background: var(--s2); }
.chip:hover { border-color: var(--border-2); color: var(--text); }
.chip.on:hover { color: var(--pink); }

.fire-btn.pop { animation: mh-pop var(--dur) var(--ease); }

.side .chev,
.chev { transition: transform var(--dur) var(--ease); }

.modal-backdrop:not(.hidden) { animation: mh-fade var(--dur) ease both; }
.modal-backdrop:not(.hidden) .modal { animation: mh-scale-in var(--dur) var(--ease-out) both; }

.menu-wrap .menu {
  opacity: 0;
  transform: translateY(-4px) scale(0.97);
  pointer-events: none;
  transition: opacity var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
.menu-wrap.open .menu {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.skeleton {
  background: linear-gradient(90deg, var(--s2) 25%, var(--s3) 37%, var(--s2) 63%);
  background-size: 200% 100%;
  animation: mh-shimmer 1.4s linear infinite;
  border-radius: var(--r);
}

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--border-2);
  border-top-color: var(--pink);
  border-radius: 50%;
  animation: mh-spin 0.7s linear infinite;
}

@media (max-width: 760px) {
  .modal-backdrop:not(.hidden) .modal { animation: mh-sheet-up var(--dur) var(--ease-out) both; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}