/* ==============================================
   ANIMATIONS — Keyframes + Reveal System
   ============================================== */

/* ==============================================
   KEYFRAMES
   ============================================== */

/* Gentle float */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-12px); }
}

/* Fade in upward */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Fade in */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Fade in from left */
@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Fade in from right */
@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Scale in */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.88);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Gold pulse glow */
@keyframes glowPulse {
  0%, 100% {
    box-shadow: 0 0 20px rgba(201, 168, 76, 0.3),
                0 0 40px rgba(201, 168, 76, 0.1);
  }
  50% {
    box-shadow: 0 0 30px rgba(201, 168, 76, 0.6),
                0 0 60px rgba(201, 168, 76, 0.25);
  }
}

/* Text shimmer */
@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position:  200% center; }
}

/* Particle drift */
@keyframes particleDrift {
  0%   { transform: translateY(0)   translateX(0)   scale(1);   opacity: 0; }
  10%  { opacity: 0.8; }
  90%  { opacity: 0.4; }
  100% { transform: translateY(-80px) translateX(20px) scale(0.6); opacity: 0; }
}

/* Particle drift 2 */
@keyframes particleDrift2 {
  0%   { transform: translateY(0)   translateX(0)   scale(1);   opacity: 0; }
  10%  { opacity: 0.6; }
  100% { transform: translateY(-60px) translateX(-30px) scale(0.5); opacity: 0; }
}

/* Scroll indicator line */
@keyframes scrollLine {
  0%   { height: 0;    opacity: 1; }
  80%  { height: 40px; opacity: 1; }
  100% { height: 40px; opacity: 0; }
}

/* Shine sweep for cards */
@keyframes shineSweep {
  0%   { transform: translateX(-100%) skewX(-15deg); opacity: 0; }
  30%  { opacity: 1; }
  100% { transform: translateX(200%)  skewX(-15deg); opacity: 0; }
}

/* Badge spin */
@keyframes badgeSpin {
  from { transform: rotate(0deg);   }
  to   { transform: rotate(360deg); }
}

/* Heartbeat */
@keyframes heartbeat {
  0%, 100% { transform: scale(1);    }
  14%       { transform: scale(1.08); }
  28%       { transform: scale(1);    }
  42%       { transform: scale(1.05); }
  70%       { transform: scale(1);    }
}

/* Line draw (for decorative lines) */
@keyframes lineDraw {
  from { width: 0; opacity: 0; }
  to   { width: 56px; opacity: 1; }
}

/* Spin slow */
@keyframes spinSlow {
  from { transform: rotate(0deg);   }
  to   { transform: rotate(360deg); }
}

/* ==============================================
   UTILITY ANIMATION CLASSES
   ============================================== */

.anim-float      { animation: float      4s ease-in-out infinite; }
.anim-glow-pulse { animation: glowPulse  3s ease-in-out infinite; }
.anim-heartbeat  { animation: heartbeat  2s ease-in-out infinite; }
.anim-spin-slow  { animation: spinSlow  20s linear infinite; }

/* Shimmer text effect */
.shimmer-text {
  background: linear-gradient(
    90deg,
    var(--gold-dark) 0%,
    var(--gold-bright) 40%,
    var(--gold) 60%,
    var(--gold-dark) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 4s linear infinite;
}

/* ==============================================
   SCROLL REVEAL SYSTEM (IntersectionObserver)
   ============================================== */

/* Initial hidden state */
.reveal,
.reveal-left,
.reveal-right,
.reveal-scale {
  opacity: 0;
  transition: opacity var(--t-slow), transform var(--t-slow);
  will-change: opacity, transform;
}

.reveal       { transform: translateY(28px); }
.reveal-left  { transform: translateX(-36px); }
.reveal-right { transform: translateX(36px); }
.reveal-scale { transform: scale(0.92); }

/* Visible state — toggled by JS */
.reveal.is-visible,
.reveal-left.is-visible,
.reveal-right.is-visible,
.reveal-scale.is-visible {
  opacity: 1;
  transform: none;
}

/* Stagger delays for children */
.stagger-children > *:nth-child(1) { transition-delay: 0ms;   }
.stagger-children > *:nth-child(2) { transition-delay: 100ms; }
.stagger-children > *:nth-child(3) { transition-delay: 200ms; }
.stagger-children > *:nth-child(4) { transition-delay: 300ms; }
.stagger-children > *:nth-child(5) { transition-delay: 400ms; }
.stagger-children > *:nth-child(6) { transition-delay: 500ms; }
.stagger-children > *:nth-child(7) { transition-delay: 600ms; }
.stagger-children > *:nth-child(8) { transition-delay: 700ms; }

/* ==============================================
   PRE-DEFINED ANIMATION COMBOS
   ============================================== */

/* Page load entrance for hero content */
.entrance-hero-title {
  animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.4s both;
}
.entrance-hero-sub {
  animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.7s both;
}
.entrance-hero-cta {
  animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) 1s both;
}
.entrance-hero-eyebrow {
  animation: fadeIn 1s ease 0.2s both;
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-left,
  .reveal-right,
  .reveal-scale,
  .anim-float,
  .anim-glow-pulse,
  .anim-heartbeat,
  .anim-spin-slow,
  .shimmer-text,
  .entrance-hero-title,
  .entrance-hero-sub,
  .entrance-hero-cta,
  .entrance-hero-eyebrow {
    animation: none;
    transition: none;
    opacity: 1;
    transform: none;
    -webkit-text-fill-color: var(--gold);
  }
}