/* ═══════════════════════════════════════════════════════════════
   ANIMATIONS
   Keyframes, Scroll Animations, Transitions
   ═══════════════════════════════════════════════════════════════ */

/* ─────────────────────────────────────────────────────────────
   INITIAL STATES (for GSAP animations)
   Content visible by default - GSAP enhances when ready
   ───────────────────────────────────────────────────────────── */

/* Elements start visible - GSAP will set initial state when ready */
[data-reveal],
[data-stagger] > * {
  /* Visible by default for no-JS fallback */
}

/* ─────────────────────────────────────────────────────────────
   KEYFRAME ANIMATIONS
   ───────────────────────────────────────────────────────────── */

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideInFromLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInFromRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes shimmer {
  from {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(100%);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* ─────────────────────────────────────────────────────────────
   HERO SPECIFIC
   ───────────────────────────────────────────────────────────── */

/* Initial state for GSAP-animated hero elements */
.hero-title,
.hero-subtitle,
.hero-cta {
  opacity: 0;
}

.hero-title {
  --char-delay: 0.03s;
}

.hero-title .char {
  display: inline-block;
  opacity: 0;
  transform: translateY(100%);
  animation: charReveal 0.6s var(--ease-out) forwards;
}

@keyframes charReveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ─────────────────────────────────────────────────────────────
   SCROLL-LINKED SECTION PARALLAX
   Applied via GSAP ScrollTrigger
   ───────────────────────────────────────────────────────────── */

.section-parallax {
  will-change: transform, opacity;
  transform-origin: center center;
}

/* ─────────────────────────────────────────────────────────────
   HOVER TRANSITIONS
   ───────────────────────────────────────────────────────────── */

/* Ensure smooth transitions on all interactive elements */
a, button, .card, .btn, .nav-link {
  transition:
    color var(--transition-fast),
    background var(--transition-normal),
    border-color var(--transition-normal),
    transform var(--transition-fast),
    box-shadow var(--transition-normal),
    opacity var(--transition-fast);
}

/* ─────────────────────────────────────────────────────────────
   LOADING STATES
   ───────────────────────────────────────────────────────────── */

.loading {
  position: relative;
  overflow: hidden;
}

.loading::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-shimmer);
  animation: shimmer 1.5s infinite;
}

/* ─────────────────────────────────────────────────────────────
   PAGE LOAD ANIMATION
   ───────────────────────────────────────────────────────────── */

/* Page loads visible - no animation dependency */

/* ─────────────────────────────────────────────────────────────
   GRADIENT TEXT ANIMATION
   ───────────────────────────────────────────────────────────── */

.text-gradient-animated {
  background: linear-gradient(
    90deg,
    var(--accent-primary) 0%,
    var(--accent-cyan) 25%,
    var(--accent-violet) 50%,
    var(--accent-cyan) 75%,
    var(--accent-primary) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 8s linear infinite;
}

@keyframes gradientShift {
  0% {
    background-position: 0% center;
  }
  100% {
    background-position: 200% center;
  }
}

/* ─────────────────────────────────────────────────────────────
   MODAL ANIMATIONS (handled by JS, these are fallbacks)
   ───────────────────────────────────────────────────────────── */

.modal-overlay {
  transition:
    opacity var(--transition-normal),
    visibility var(--transition-normal),
    backdrop-filter var(--transition-normal);
}

.modal {
  transition:
    opacity var(--transition-normal),
    visibility var(--transition-normal),
    transform var(--transition-normal);
}

/* ─────────────────────────────────────────────────────────────
   PERFORMANCE HINTS
   ───────────────────────────────────────────────────────────── */

/* Apply will-change only when needed (added/removed by JS) */
.animating {
  will-change: transform, opacity;
}

/* GPU-accelerated transforms */
.gpu {
  transform: translateZ(0);
  backface-visibility: hidden;
}