/* ============================================================
   Star Asian School — Animations CSS
   ============================================================ */

/* ── Keyframes ──────────────────────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(32px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-32px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(32px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes fadeIn {
  from { opacity: 0; } to { opacity: 1; }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.90); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(1.3); }
}
@keyframes heroPulse {
  0%   { box-shadow: 0 0 0 0 rgba(176,28,28,0.4); }
  70%  { box-shadow: 0 0 0 12px rgba(176,28,28,0); }
  100% { box-shadow: 0 0 0 0 rgba(176,28,28,0); }
}
@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}
@keyframes scrollDown {
  0%   { opacity: 1; transform: translateY(0); }
  100% { opacity: 0; transform: translateY(20px); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}
@keyframes loaderBar {
  from { width: 0; }
  to   { width: 100%; }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes heroZoom {
  from { transform: scale(1.05); }
  to   { transform: scale(1.12); }
}

/* ── Reveal on Scroll ───────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-left {
  opacity: 0;
  transform: translateX(-36px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}
.reveal-right {
  opacity: 0;
  transform: translateX(36px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}
.reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal-scale.visible {
  opacity: 1;
  transform: scale(1);
}

/* Staggered delays */
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }
.reveal-delay-5 { transition-delay: 0.40s; }
.reveal-delay-6 { transition-delay: 0.48s; }

/* ── Hero Animations (initial load) ─────────────────────── */
.hero-badge    { animation: fadeInUp 0.6s ease both; }
.hero-title    { animation: fadeInUp 0.7s 0.10s ease both; }
.hero-desc     { animation: fadeInUp 0.7s 0.20s ease both; }
.hero-actions  { animation: fadeInUp 0.7s 0.30s ease both; }
.hero-stats    { animation: fadeInUp 0.7s 0.40s ease both; }
.hero-scroll   { animation: fadeIn    1.0s 0.80s ease both; }

/* ── Page Loader ─────────────────────────────────────────── */
#page-loader {
  position: fixed; inset: 0; z-index: 99999;
  background: var(--white);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 20px;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}
#page-loader.hidden {
  opacity: 0; visibility: hidden; pointer-events: none;
}
.loader-logo {
  font-family: var(--ff-head); font-size: var(--fs-2xl);
  font-weight: var(--fw-bold); color: var(--red);
}
.loader-tagline {
  font-size: var(--fs-sm); color: var(--text-muted);
  letter-spacing: 0.1em;
}
.loader-bar-wrap {
  width: 200px; height: 3px;
  background: var(--gray-200); border-radius: 3px; overflow: hidden;
}
.loader-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--red), var(--gold), var(--navy));
  animation: loaderBar 1.5s ease forwards;
  border-radius: 3px;
}

/* ── Scroll Arrow ────────────────────────────────────────── */
.hero-scroll {
  position: absolute; bottom: 32px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  z-index: 2;
}
.hero-scroll-text {
  font-size: var(--fs-xs); letter-spacing: 0.15em;
  color: rgba(255,255,255,0.65); text-transform: uppercase;
}
.hero-scroll-line {
  width: 2px; height: 36px; border-radius: 2px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.7), transparent);
  animation: scrollDown 1.8s ease infinite;
}

/* ── Gold Shimmer Button Effect ─────────────────────────── */
.btn-gold {
  background: linear-gradient(
    90deg,
    var(--gold-dark) 0%,
    var(--gold-light) 30%,
    var(--gold) 50%,
    var(--gold-light) 70%,
    var(--gold-dark) 100%
  );
  background-size: 200% auto;
  animation: shimmer 3s linear infinite;
}
.btn-gold:hover { animation-play-state: paused; }

/* ── Floating Animation ─────────────────────────────────── */
.float-anim { animation: float 4s ease-in-out infinite; }
.float-anim-2 { animation: float 5s 0.5s ease-in-out infinite; }
.float-anim-3 { animation: float 6s 1s ease-in-out infinite; }

/* ── Pulse dot (badge indicator) ────────────────────────── */
.pulse-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--gold); display: inline-block;
  animation: pulse 2s ease infinite;
}

/* ── Image loading skeleton ─────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, var(--gray-200) 25%, var(--gray-100) 50%, var(--gray-200) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

/* ── Background mesh decoration ────────────────────────── */
.bg-mesh {
  position: absolute; inset: 0; pointer-events: none;
  overflow: hidden; z-index: 0;
}
.bg-mesh::before {
  content: '';
  position: absolute; width: 500px; height: 500px; border-radius: 50%;
  background: radial-gradient(circle, rgba(176,28,28,0.05) 0%, transparent 70%);
  top: -150px; right: -150px;
}
.bg-mesh::after {
  content: '';
  position: absolute; width: 350px; height: 350px; border-radius: 50%;
  background: radial-gradient(circle, rgba(26,35,126,0.05) 0%, transparent 70%);
  bottom: -80px; left: -80px;
}

/* ── CTA Section pulse ring ─────────────────────────────── */
.cta-ring {
  animation: heroPulse 2s ease infinite;
}