/* ============================================================
   動效 · @keyframes · 滾動入場
   ============================================================ */

/* ---------- 雲紋橫向飄移 ---------- */
@keyframes drift {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ---------- 藻井緩慢旋轉 ---------- */
@keyframes rotate-slow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* ---------- 光暈呼吸 ---------- */
@keyframes breathe {
  0%, 100% { opacity: .55; transform: scale(1); }
  50%      { opacity: 1;   transform: scale(1.04); }
}

/* ---------- 打字機游標 ---------- */
@keyframes blink {
  0%, 49%   { opacity: 1; }
  50%, 100% { opacity: 0; }
}

/* ---------- 香火焰舞 ---------- */
@keyframes flame-dance {
  0%, 100% { transform: translateY(0) scaleY(1);     opacity: .95; }
  35%      { transform: translateY(-2px) scaleY(1.12); opacity: 1; }
  70%      { transform: translateY(1px) scaleY(.94);   opacity: .85; }
}

/* ---------- 點燈光暈綻放 ---------- */
@keyframes lamp-bloom {
  0%   { opacity: 0; transform: scale(.4); }
  55%  { opacity: 1; transform: scale(1.06); }
  100% { opacity: .85; transform: scale(1); }
}

/* ---------- 描金沿邊框流動 ---------- */
@keyframes stroke-run {
  from { stroke-dashoffset: 0; }
  to   { stroke-dashoffset: -550; }
}

/* ---------- 進度條流光 ---------- */
@keyframes sheen {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* ---------- 滾動提示下落 ---------- */
@keyframes drop {
  0%        { transform: scaleY(0); transform-origin: top; opacity: 0; }
  40%       { transform: scaleY(1); transform-origin: top; opacity: 1; }
  60%       { transform: scaleY(1); transform-origin: bottom; opacity: 1; }
  100%      { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}

/* ---------- 捲軸展開（諮詢室回應） ---------- */
@keyframes scroll-open {
  from { clip-path: inset(0 50% 0 50%); opacity: .2; }
  to   { clip-path: inset(0 0 0 0);     opacity: 1; }
}
.is-scrolling-open { animation: scroll-open .6s var(--e-out) both; }

/* ---------- 捲軸軸心（上下木軸） ---------- */
@keyframes rod-out {
  from { transform: translateX(0); }
  to   { transform: translateX(var(--rod-dir, -100%)); }
}

/* ---------- 入場（IntersectionObserver） ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s var(--e-out), transform .7s var(--e-out);
  transition-delay: var(--d, 0ms);
}
.reveal.is-in { opacity: 1; transform: none; }

.reveal-left  { transform: translateX(-28px); }
.reveal-right { transform: translateX(28px); }
.reveal-scale { transform: scale(.96); }

/* 窄屏之上，區塊多為滿寬，橫向位移必然溢出；改為上浮淡入，效果等同且不撐版 */
@media (max-width: 700px) {
  .reveal-left,
  .reveal-right { transform: translateY(24px); }
  .reveal-right.is-in,
  .reveal-left.is-in { transform: none; }
}

/* ---------- 懸停微光掃過 ---------- */
@keyframes sweep {
  from { transform: translateX(-120%) skewX(-18deg); }
  to   { transform: translateX(320%)  skewX(-18deg); }
}
.u-sweep { position: relative; overflow: hidden; }
.u-sweep::after {
  content: ""; position: absolute; top: 0; bottom: 0; left: 0; width: 40%;
  background: linear-gradient(90deg, transparent, rgba(255,233,168,.18), transparent);
  transform: translateX(-120%) skewX(-18deg);
  opacity: 0; pointer-events: none;
}
.u-sweep:hover::after { opacity: 1; animation: sweep .9s var(--e-out); }

/* ---------- 視差層將由 JS 以 translate3d 驅動 ---------- */
.hero-layer, .hero-far, .hero-mid { will-change: transform; }

/* ---------- 減少動效：全部關閉位移與循環 ---------- */
@media (prefers-reduced-motion: reduce) {
  .hero-clouds svg,
  .zaojing svg,
  .hero-hero .halo,
  .deity-tablet::before,
  .counsel-hero::before,
  .incense-stage.is-lit .flame,
  .progress-bar::after,
  .scroll-hint i,
  .hall-card .stroke-flow rect {
    animation: none !important;
  }
  .reveal { opacity: 1; transform: none; }
  .hero-layer { transform: none !important; }
  .lamp.is-lit .halo { opacity: .85; transform: scale(1); }
}