/* ==========================================================================
   FLAVOR GLASS — Animations & Transitions
   Apple Liquid Glass motion principles:
   - Motion as feedback (not decoration)
   - Smooth, physics-based easing
   - Staggered reveals for hierarchy
   - Continuous ambient movement for glass materials
   ========================================================================== */

/* --- Page transition overlay --- */
.page-transition {
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
}

.page-transition-glass {
  position: absolute;
  inset: 0;
  background: var(--fg-glass-bg);
  -webkit-backdrop-filter: blur(var(--fg-blur-xl));
  backdrop-filter: blur(var(--fg-blur-xl));
  opacity: 0;
  transition: opacity var(--fg-duration-page) var(--fg-ease-glass);
}

.page-transition.active .page-transition-glass {
  opacity: 1;
}

/* --- Scroll-reveal animations --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity var(--fg-duration-slow) var(--fg-ease-smooth),
    transform var(--fg-duration-slow) var(--fg-ease-smooth);
}

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

/* Stagger children */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity var(--fg-duration-slow) var(--fg-ease-smooth),
    transform var(--fg-duration-slow) var(--fg-ease-smooth);
}

.reveal-stagger.visible > *:nth-child(1) { transition-delay: 0ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(2) { transition-delay: 80ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(3) { transition-delay: 160ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(4) { transition-delay: 240ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(5) { transition-delay: 320ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(6) { transition-delay: 400ms; opacity: 1; transform: translateY(0); }

/* Scale-in reveal */
.reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  transition:
    opacity var(--fg-duration-slow) var(--fg-ease-smooth),
    transform var(--fg-duration-slow) var(--fg-ease-spring);
}

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

/* Slide in from left */
.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition:
    opacity var(--fg-duration-slow) var(--fg-ease-smooth),
    transform var(--fg-duration-slow) var(--fg-ease-smooth);
}

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

/* Slide in from right */
.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition:
    opacity var(--fg-duration-slow) var(--fg-ease-smooth),
    transform var(--fg-duration-slow) var(--fg-ease-smooth);
}

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

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

.glass-shimmer::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    110deg,
    transparent 30%,
    rgba(255, 255, 255, 0.08) 45%,
    rgba(255, 255, 255, 0.12) 50%,
    rgba(255, 255, 255, 0.08) 55%,
    transparent 70%
  );
  background-size: 200% 100%;
  animation: fg-shimmer 4s ease-in-out infinite;
  pointer-events: none;
}

/* --- Counter animation (JS-driven via data-target) --- */
.counter {
  font-variant-numeric: tabular-nums;
}

/* --- Float / hover micro-animation --- */
@keyframes fg-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.float-anim {
  animation: fg-float 4s ease-in-out infinite;
}

/* --- Pulse glow --- */
@keyframes fg-pulse-glow {
  0%, 100% {
    box-shadow: 0 0 15px var(--fg-accent-glow);
  }
  50% {
    box-shadow: 0 0 30px var(--fg-accent-glow), 0 0 50px rgba(88, 196, 220, 0.15);
  }
}

.pulse-glow {
  animation: fg-pulse-glow 3s ease-in-out infinite;
}

/* --- Smooth link/nav transitions --- */
.nav-transition-enter {
  opacity: 0;
  transform: translateY(10px);
}

.nav-transition-enter-active {
  opacity: 1;
  transform: translateY(0);
  transition:
    opacity var(--fg-duration-slow) var(--fg-ease-smooth),
    transform var(--fg-duration-slow) var(--fg-ease-smooth);
}

.nav-transition-exit {
  opacity: 1;
  transform: translateY(0);
}

.nav-transition-exit-active {
  opacity: 0;
  transform: translateY(-10px);
  transition:
    opacity var(--fg-duration-base) var(--fg-ease-glass),
    transform var(--fg-duration-base) var(--fg-ease-glass);
}

/* --- Glass surface light movement --- */
@keyframes fg-light-sweep {
  0% {
    opacity: 0;
    transform: translateX(-100%) rotate(-10deg);
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translateX(100%) rotate(-10deg);
  }
}

.glass-light-sweep {
  position: relative;
  overflow: hidden;
}

.glass-light-sweep::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 50%;
  height: 200%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.06),
    transparent
  );
  transform: translateX(-100%) rotate(-10deg);
  pointer-events: none;
}

.glass-light-sweep:hover::after {
  animation: fg-light-sweep 0.8s ease-out;
}

/* --- Resume Hero floating orb keyframes --- */
@keyframes fg-hero-orb-1 {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.7; }
  33% { transform: translate(30px, -25px) scale(1.15); opacity: 1; }
  66% { transform: translate(-15px, 15px) scale(0.9); opacity: 0.6; }
}

@keyframes fg-hero-orb-2 {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.6; }
  33% { transform: translate(-25px, 20px) scale(0.85); opacity: 0.8; }
  66% { transform: translate(20px, -10px) scale(1.1); opacity: 1; }
}

@keyframes fg-hero-orb-3 {
  0%, 100% { transform: translate(0, 0); opacity: 0.4; }
  50% { transform: translate(15px, -15px); opacity: 0.7; }
}

/* --- Stagger grid reveal (JS sets transition-delay per child) --- */
.reveal-stagger-grid > * {
  opacity: 0;
  transform: translateY(20px) scale(0.95);
  transition:
    opacity 500ms var(--fg-ease-smooth),
    transform 500ms var(--fg-ease-spring);
}

.reveal-stagger-grid.visible > * {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* --- Stagger tags reveal (smaller, faster pop-in) --- */
.reveal-stagger-tags > * {
  opacity: 0;
  transform: translateY(8px) scale(0.92);
  transition:
    opacity 300ms var(--fg-ease-smooth),
    transform 300ms var(--fg-ease-spring);
}

.reveal-stagger-tags.visible > * {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* --- Timeline slide-in reveal --- */
.reveal-timeline > .timeline-item {
  opacity: 0;
  transform: translateX(-25px);
  transition:
    opacity 400ms var(--fg-ease-smooth),
    transform 400ms var(--fg-ease-smooth);
}

.reveal-timeline.visible > .timeline-item {
  opacity: 1;
  transform: translateX(0);
}

/* --- Nav active glow pulse --- */
@keyframes fg-nav-glow-pulse {
  0%, 100% { box-shadow: 0 0 0 transparent; }
  50% { box-shadow: 0 0 15px var(--fg-accent-glow); }
}

.main-nav a.active {
  animation: fg-nav-glow-pulse 3s ease-in-out infinite;
}

/* --- Reduced motion --- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal,
  .reveal-scale,
  .reveal-left,
  .reveal-right,
  .reveal-stagger > *,
  .reveal-stagger-grid > *,
  .reveal-stagger-tags > *,
  .reveal-timeline > .timeline-item {
    opacity: 1;
    transform: none;
  }
}