/* ═══════════════════════════════════════════════════
   ANIMATIONS.CSS — Keyframes, Reveal Classes, Motion
   ═══════════════════════════════════════════════════ */

/* ─── Reveal System ─── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity var(--dur-slower) var(--ease-out-expo),
    transform var(--dur-slower) var(--ease-out-expo);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition:
    opacity var(--dur-slower) var(--ease-out-expo),
    transform var(--dur-slower) var(--ease-out-expo);
}

.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition:
    opacity var(--dur-slower) var(--ease-out-expo),
    transform var(--dur-slower) var(--ease-out-expo);
}

.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  transition:
    opacity var(--dur-slower) var(--ease-out-expo),
    transform var(--dur-slower) var(--ease-out-expo);
}

.reveal-scale.revealed {
  opacity: 1;
  transform: scale(1);
}

/* Stagger delays */
.reveal-delay-1 { transition-delay: 100ms; }
.reveal-delay-2 { transition-delay: 200ms; }
.reveal-delay-3 { transition-delay: 300ms; }
.reveal-delay-4 { transition-delay: 400ms; }
.reveal-delay-5 { transition-delay: 500ms; }
.reveal-delay-6 { transition-delay: 600ms; }

/* ─── Character Reveal ─── */
.char-reveal {
  display: inline-block;
  overflow: hidden;
}

.char-reveal__char {
  display: inline-block;
  opacity: 0;
  transform: translateY(100%);
  transition:
    opacity 0.5s var(--ease-out-expo),
    transform 0.5s var(--ease-out-expo);
}

.char-reveal.revealed .char-reveal__char {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Intro Specific Animations ─── */
@keyframes ambientPulse {
  0%, 100% { opacity: 0.2; transform: scale(1); }
  50%      { opacity: 0.4; transform: scale(1.1); }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeOut {
  from { opacity: 1; }
  to   { opacity: 0; pointer-events: none; }
}

@keyframes introExit {
  from {
    opacity: 1;
    transform: scale(1);
  }
  to {
    opacity: 0;
    transform: scale(1.05);
    pointer-events: none;
  }
}

/* ─── Particle System ─── */
.particles-canvas {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.6;
}

/* ─── Gradient Glow Animation ─── */
@keyframes gradientShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* ─── Line Draw ─── */
@keyframes lineDraw {
  from { width: 0; }
  to   { width: 100%; }
}

/* ─── Floating Subtle ─── */
@keyframes floatSubtle {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}

/* ─── Pulse Ring ─── */
@keyframes pulseRing {
  0%   { transform: scale(1); opacity: 0.5; }
  100% { transform: scale(1.5); opacity: 0; }
}