/* ============================================
   MENAART — Animations & Motion
   ============================================ */

/* ── Registered Properties ── */
@property --lang-angle {
  syntax: '<angle>';
  initial-value: 0deg;
  inherits: false;
}

@property --portrait-angle {
  syntax: '<angle>';
  initial-value: 0deg;
  inherits: false;
}

/* ── Keyframes ── */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes scrollPulse {
  0%, 100% {
    opacity: 0.4;
    transform: translateY(0);
  }
  50% {
    opacity: 1;
    transform: translateY(8px);
  }
}

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

@keyframes lang-border-spin {
  to {
    --lang-angle: 360deg;
  }
}

@keyframes lang-pulse {
  0%, 100% {
    opacity: 0.6;
  }
  50% {
    opacity: 1;
  }
}

@keyframes orb-spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes rays-rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes shockwave-exp {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  100% {
    transform: scale(3);
    opacity: 0;
  }
}

@keyframes particle-fly {
  0% {
    transform: translate(0, 0) scale(1);
    opacity: 1;
  }
  100% {
    transform: translate(var(--px, 20px), var(--py, -20px)) scale(0);
    opacity: 0;
  }
}

@keyframes scrollBounce {
  0%, 100% {
    transform: scaleY(1);
    opacity: 1;
  }
  50% {
    transform: scaleY(1.5);
    opacity: 0.5;
  }
}

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

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

/* Stagger children */
.reveal.visible > *:nth-child(1) { transition-delay: 0ms; }
.reveal.visible > *:nth-child(2) { transition-delay: 75ms; }
.reveal.visible > *:nth-child(3) { transition-delay: 150ms; }
.reveal.visible > *:nth-child(4) { transition-delay: 225ms; }

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity var(--duration-slower) var(--ease-out-expo),
              transform var(--duration-slower) var(--ease-out-expo);
}

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

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity var(--duration-slower) var(--ease-out-expo),
              transform var(--duration-slower) var(--ease-out-expo);
}

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

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity var(--duration-slower) var(--ease-out-expo),
              transform var(--duration-slower) var(--ease-out-expo);
}

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

/* ── Hero Stagger ── */
.hero-content > *:nth-child(1) {
  animation: fadeUp 1s var(--ease-out-expo) 0.2s both;
}

.hero-content > *:nth-child(2) {
  animation: fadeUp 1s var(--ease-out-expo) 0.4s both;
}

.hero-content > *:nth-child(3) {
  animation: fadeUp 1s var(--ease-out-expo) 0.6s both;
}

.hero-content > *:nth-child(4) {
  animation: fadeUp 1s var(--ease-out-expo) 0.8s both;
}

/* ── Scroll Indicator ── */
.scroll-indicator {
  animation: scrollPulse 2s ease-in-out infinite;
}

/* ── Hover Micro-Interactions ── */
.hover-lift {
  transition: transform var(--duration-fast) var(--ease-out-expo);
}

.hover-lift:hover {
  transform: translateY(-3px);
}

/* ── Light Theme Animations ── */
@keyframes lightGradientShift {
  0% {
    background-position: 0% 50%;
  }
  25% {
    background-position: 100% 50%;
  }
  50% {
    background-position: 100% 100%;
  }
  75% {
    background-position: 0% 100%;
  }
  100% {
    background-position: 0% 50%;
  }
}

@keyframes lightGlowPulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.6;
  }
  50% {
    transform: scale(1.2);
    opacity: 1;
  }
}

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

@keyframes navGlowPulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

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

@keyframes logoFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}

@keyframes socialPop {
  0% { transform: scale(1); }
  50% { transform: scale(1.2); }
  100% { transform: scale(1.05); }
}

@keyframes portraitBorderSpin {
  from { --portrait-angle: 0deg; }
  to { --portrait-angle: 360deg; }
}

@keyframes portraitGlow {
  0%, 100% { opacity: 0.2; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.08); }
}

@keyframes portraitSweep {
  0% { transform: translateX(-100%) rotate(15deg); }
  100% { transform: translateX(200%) rotate(15deg); }
}

@keyframes footerGradientMove {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

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

  .reveal,
  .reveal-left,
  .reveal-right,
  .reveal-scale {
    opacity: 1;
    transform: none;
  }

  /* Design Quality Enhancement: disable transform-based interactions */
  .btn:hover,
  .btn:active {
    transform: none;
  }

  .art-card:hover,
  .art-card:active {
    transform: none;
  }

  .art-card:hover img {
    transform: none;
  }

  .nav__link::after {
    transform: scaleX(1);
    opacity: 0;
  }

  .nav__link:hover::after,
  .nav__link:focus-visible::after,
  .nav__link.active::after {
    opacity: 1;
  }

  .social-btn:hover,
  .footer__social-link:hover {
    transform: none;
  }

  .hover-lift:hover {
    transform: none;
  }
}