/* ============================================================
   QUAN ZHEN — Interactivity Enhancement v1.0
   Add this as a separate file: css/interactions.css
   Then link it in every HTML file after style.css:
   <link rel="stylesheet" href="css/interactions.css">
   ============================================================ */

/* ── Scroll reveal — base state (hidden) ─────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

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

.reveal.reveal-scale {
  transform: scale(0.96);
}

/* Visible state — triggered by JS IntersectionObserver */
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* Staggered children */
.reveal-group .reveal:nth-child(1) { transition-delay: 0s; }
.reveal-group .reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal-group .reveal:nth-child(3) { transition-delay: 0.2s; }
.reveal-group .reveal:nth-child(4) { transition-delay: 0.3s; }
.reveal-group .reveal:nth-child(5) { transition-delay: 0.4s; }
.reveal-group .reveal:nth-child(6) { transition-delay: 0.5s; }

/* ── Hero — full viewport height ─────────────────────────── */
.hero {
  min-height: 100vh !important;
  display: flex !important;
  align-items: center !important;
}

/* Hero content fade up on load */
.hero-content {
  animation: heroFadeUp 1s ease forwards;
  animation-delay: 0.2s;
  opacity: 0;
}

@keyframes heroFadeUp {
  from {
    opacity: 0;
    transform: translateY(32px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Hero background characters — slow drift */
.hero-bg-char {
  animation: charDrift 20s ease-in-out infinite alternate;
}
.hero-bg-char:nth-child(1) { animation-delay: 0s; animation-duration: 22s; }
.hero-bg-char:nth-child(2) { animation-delay: 2s; animation-duration: 18s; }
.hero-bg-char:nth-child(3) { animation-delay: 4s; animation-duration: 24s; }
.hero-bg-char:nth-child(4) { animation-delay: 1s; animation-duration: 20s; }

@keyframes charDrift {
  from { transform: translateY(0px) rotate(0deg); }
  to   { transform: translateY(-18px) rotate(1.5deg); }
}

/* ── Gold divider animated width ─────────────────────────── */
.gold-divider,
.gold-divider-center {
  width: 0;
  transition: width 0.8s ease;
}
.gold-divider.visible,
.gold-divider-center.visible {
  width: 48px;
}

/* ── Card hover elevations ────────────────────────────────── */
.event-card {
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease !important;
}
.event-card:hover {
  transform: translateY(-4px) !important;
  box-shadow: 0 12px 32px rgba(26,39,68,0.12) !important;
}

.pillar-card {
  transition: transform 0.25s ease, box-shadow 0.25s ease !important;
  cursor: default;
}
.pillar-card:hover {
  transform: translateY(-4px) !important;
  box-shadow: 0 12px 32px rgba(26,39,68,0.1) !important;
}

.cta-card {
  transition: background 0.25s ease, border-color 0.25s ease, transform 0.25s ease !important;
}
.cta-card:hover {
  background: rgba(245,237,216,0.08) !important;
  border-color: rgba(201,168,76,0.3) !important;
  transform: translateY(-2px) !important;
}

/* ── Stats bar — count-up number pulse ───────────────────── */
.stat-value {
  transition: transform 0.3s ease;
}
.stat-item:hover .stat-value {
  transform: scale(1.1);
}

/* ── Nav link underline slide ─────────────────────────────── */
.nav-links a {
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--brass-gold);
  transition: width 0.25s ease;
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* ── Button press feedback ────────────────────────────────── */
.btn {
  transition: all 0.2s ease, transform 0.1s ease !important;
}
.btn:active {
  transform: scale(0.97) !important;
}

/* ── Page hero sections — parallax-lite ──────────────────── */
.page-hero {
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(201,168,76,0.06) 0%, transparent 70%);
  pointer-events: none;
}

/* ── Section entrance — subtle background shift ──────────── */
.section-paper {
  position: relative;
}

/* ── Lineage connector — animated height ─────────────────── */
.lineage-connector {
  height: 0;
  transition: height 0.6s ease;
  overflow: hidden;
}
.lineage-connector.visible {
  height: 20px;
}

/* ── Deity and committee cards — lift on hover ───────────── */
.deity-card,
.committee-card {
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease !important;
}
.deity-card:hover,
.committee-card:hover {
  transform: translateY(-4px) !important;
  box-shadow: 0 8px 24px rgba(26,39,68,0.1) !important;
}

/* ── Scripture and practice cards ────────────────────────── */
.scripture-card,
.practice-card {
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease !important;
}
.scripture-card:hover,
.practice-card:hover {
  transform: translateY(-3px) !important;
  box-shadow: 0 8px 24px rgba(26,39,68,0.08) !important;
}

/* ── Album cards — image zoom on hover ───────────────────── */
.album-card {
  overflow: hidden;
}
.album-cover {
  transition: transform 0.4s ease !important;
}
.album-card:hover .album-cover {
  transform: scale(1.05) !important;
}

/* ── WhatsApp float — pulse ring ─────────────────────────── */
.wa-float {
  position: relative;
}
.wa-float::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50px;
  background: rgba(37,211,102,0.2);
  animation: waPulse 2.5s ease-in-out infinite;
  pointer-events: none;
}

@keyframes waPulse {
  0%   { transform: scale(1);   opacity: 0.6; }
  50%  { transform: scale(1.08); opacity: 0.2; }
  100% { transform: scale(1);   opacity: 0.6; }
}

/* ── Footer links — gold underline on hover ──────────────── */
.footer-col a {
  position: relative;
  padding-bottom: 1px;
}
.footer-col a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 0.5px;
  background: var(--brass-gold);
  transition: width 0.2s ease;
}
.footer-col a:hover::after {
  width: 100%;
}

/* ── Eyebrow — slide in from left ────────────────────────── */
.eyebrow {
  position: relative;
  padding-left: 0;
  transition: padding-left 0.4s ease;
}

/* ── Reduce motion — respect user preference ─────────────── */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .hero-content,
  .hero-bg-char,
  .gold-divider,
  .gold-divider-center,
  .lineage-connector {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
    width: 48px !important;
    height: 20px !important;
  }
  .wa-float::before {
    animation: none !important;
  }
}