/* ============================================================
   ANIMATIONS & TRANSITIONS — Premium v2
   ============================================================ */

/* ── Intro Loader ──────────────────────────────────────────── */
.intro-loader {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: linear-gradient(145deg, #060B18, #0C1630, #101B38);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
    visibility 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.intro-loader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.intro-loader__content {
  display: flex;
  align-items: center;
  justify-content: center;
}

.intro-loader__spinner {
  position: relative;
  width: 64px;
  height: 64px;
}

.intro-loader__ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2.5px solid transparent;
  border-top-color: rgba(75, 131, 242, 0.9);
  border-right-color: rgba(75, 131, 242, 0.3);
  animation: loader-spin 1s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.intro-loader__ring--2 {
  inset: 8px;
  border-top-color: rgba(52, 211, 153, 0.7);
  border-right-color: rgba(52, 211, 153, 0.2);
  animation: loader-spin-reverse 1.4s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.intro-loader__dot {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 8px;
  margin: -4px 0 0 -4px;
  border-radius: 50%;
  background: rgba(75, 131, 242, 0.9);
  box-shadow: 0 0 16px rgba(75, 131, 242, 0.5);
  animation: loader-dot-pulse 1.2s ease-in-out infinite;
}

@keyframes loader-spin {
  to { transform: rotate(360deg); }
}

@keyframes loader-spin-reverse {
  to { transform: rotate(-360deg); }
}

@keyframes loader-dot-pulse {
  0%, 100% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(1.4); opacity: 1; }
}

/* ── Keyframes ──────────────────────────────────────────────── */
@keyframes marquee {
  0% {
    transform: translateX(0);
  }

  100% {
    transform: translateX(-50%);
  }
}

@keyframes glow-pulse {

  0%,
  100% {
    opacity: 1;
    box-shadow: 0 0 6px currentColor;
  }

  50% {
    opacity: .6;
    box-shadow: 0 0 14px currentColor;
  }
}

@keyframes grid-pulse {

  0%,
  100% {
    opacity: .4;
  }

  50% {
    opacity: .7;
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

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

  100% {
    background-position: 200% center;
  }
}

@keyframes scale-in {
  from {
    transform: scale(0.92);
    opacity: 0;
  }

  to {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes slide-up {
  from {
    transform: translateY(40px);
    opacity: 0;
  }

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

@keyframes slide-left {
  from {
    transform: translateX(50px);
    opacity: 0;
  }

  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slide-right {
  from {
    transform: translateX(-50px);
    opacity: 0;
  }

  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes gradient-shift {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}

@keyframes subtle-float {

  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }

  33% {
    transform: translateY(-6px) rotate(0.5deg);
  }

  66% {
    transform: translateY(3px) rotate(-0.3deg);
  }
}

@keyframes border-glow {

  0%,
  100% {
    border-color: rgba(75, 131, 242, 0.15);
  }

  50% {
    border-color: rgba(75, 131, 242, 0.35);
  }
}

/* ── Scroll Reveal Base ─────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

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

.reveal-fade {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

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

.reveal-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

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

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

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

/* Stagger children — each child delays by 100ms */
.stagger-children>.reveal:nth-child(1) {
  transition-delay: 0s;
}

.stagger-children>.reveal:nth-child(2) {
  transition-delay: .1s;
}

.stagger-children>.reveal:nth-child(3) {
  transition-delay: .2s;
}

.stagger-children>.reveal:nth-child(4) {
  transition-delay: .3s;
}

.stagger-children>.reveal:nth-child(5) {
  transition-delay: .4s;
}

.stagger-children>.reveal:nth-child(6) {
  transition-delay: .5s;
}

.stagger-children>.reveal:nth-child(7) {
  transition-delay: .6s;
}

/* ── Page Transition ────────────────────────────────────────── */
#page-content {
  transition: opacity .25s var(--ease-smooth), transform .25s var(--ease-smooth);
}

/* ── Hover Micro-Animations ─────────────────────────────────── */
.program-card,
.service-card,
.country-card,
.blog-card,
.apply-box,
.job-card {
  transition: all .4s var(--ease-out);
}

/* Card lift shadow on hover */
.program-card:hover,
.service-card:hover,
.country-card:hover,
.blog-card:hover,
.apply-box:hover,
.job-card:hover {
  transform: translateY(-8px);
}

/* Smooth link underline for program card links */
.program-card__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary-500), var(--color-primary-300));
  transition: width .3s var(--ease-out);
}

.program-card__link {
  position: relative;
}

.program-card__link:hover::after {
  width: 100%;
}

/* ── Hero entrance animation ────────────────────────────────── */
.hero .reveal-fade:nth-child(1) {
  transition-delay: .15s;
}

.hero .reveal-fade:nth-child(2) {
  transition-delay: .3s;
}

.hero .reveal-fade:nth-child(3) {
  transition-delay: .45s;
}

.hero .reveal-fade:nth-child(4) {
  transition-delay: .6s;
}

.hero .reveal-fade:nth-child(5) {
  transition-delay: .75s;
}

/* Blog marquee for mobile */
@keyframes blog-marquee {
  0% {
    transform: translateX(0);
  }

  100% {
    transform: translateX(-50%);
  }
}

/* ── Page Transition Loader Bar ────────────────────────────── */
.page-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, #4B83F2, #34D399, #D4A843);
  background-size: 200% 100%;
  animation: gradient-shift 2s ease infinite;
  z-index: 10000;
  transition: width .15s ease;
  box-shadow: 0 0 12px rgba(75, 131, 242, 0.5);
  opacity: 0;
  pointer-events: none;
}

.page-loader.active {
  opacity: 1;
}

.page-loader.done {
  width: 100% !important;
  transition: width .2s ease;
}

.page-loader.fade-out {
  opacity: 0;
  transition: opacity .3s ease .15s;
}

/* Field validation shake */
@keyframes field-shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}

/* ── Mobile Animation Optimizations ─────────────────────────── */
@media (max-width: 768px) {
  /* Faster, snappier reveals on mobile */
  .reveal {
    transform: translateY(20px);
    transition: opacity 0.4s var(--ease-out), transform 0.4s var(--ease-out);
  }
  .reveal-fade {
    transform: translateY(12px);
    transition: opacity 0.35s var(--ease-out), transform 0.35s var(--ease-out);
  }
  .reveal-left {
    transform: translateX(-24px);
    transition: opacity 0.4s var(--ease-out), transform 0.4s var(--ease-out);
  }
  .reveal-right {
    transform: translateX(24px);
    transition: opacity 0.4s var(--ease-out), transform 0.4s var(--ease-out);
  }
  .reveal-scale {
    transition: opacity 0.35s var(--ease-out), transform 0.35s var(--ease-out);
  }

  /* Remove stagger delays on mobile — items are stacked vertically,
     user only sees one at a time so staggering just adds perceived lag */
  .stagger-children > .reveal:nth-child(n) {
    transition-delay: 0s !important;
  }

  /* Faster hero entrance — no one wants to wait 0.75s for the CTA */
  .hero .reveal-fade:nth-child(1) { transition-delay: 0s; }
  .hero .reveal-fade:nth-child(2) { transition-delay: .08s; }
  .hero .reveal-fade:nth-child(3) { transition-delay: .16s; }
  .hero .reveal-fade:nth-child(4) { transition-delay: .22s; }
  .hero .reveal-fade:nth-child(5) { transition-delay: .28s; }

  /* Kill GPU-heavy background animations on mobile for performance */
  .hero__bg-grid { animation: none; opacity: 0.3; }
  .hero__bg-glow,
  .hero__bg-glow-2 { display: none; }

  /* Lighter hover effects on mobile (no hover on touch) */
  .program-card:hover,
  .service-card:hover,
  .country-card:hover,
  .blog-card:hover,
  .apply-box:hover,
  .job-card:hover,
  .service-showcase-card:hover {
    transform: none;
  }

  /* Faster page transition */
  #page-content {
    transition: opacity .15s var(--ease-smooth), transform .15s var(--ease-smooth);
  }
}

/* ── 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-fade,
  .reveal-left,
  .reveal-right,
  .reveal-scale {
    opacity: 1;
    transform: none;
  }

  .intro-loader {
    display: none !important;
  }
}