/* ===== ANIMATIONS CSS ===== */
/* Inspired by Vietnamese culture - flowing, organic, spiritual */
/* Optimized for GPU acceleration */

/* ===== PERFORMANCE OPTIMIZATIONS ===== */
/* Use GPU-accelerated properties: transform, opacity, filter */
/* Avoid animating: width, height, top, left, margin, padding */

.animate-element,
.philosophy__dragon img,
.hero__lotus,
.gallery__bamboo,
.gallery__bamboo-decor,
.about-hero__bamboo img,
.about-me__flower {
  will-change: transform, opacity;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
}

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

/* ===== KEYFRAMES ===== */

/* Fade In animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(60px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-60px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-60px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(60px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Dragon Float - organic flowing motion */
@keyframes dragonFloat {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  25% {
    transform: translateY(-15px) rotate(1deg);
  }
  50% {
    transform: translateY(-5px) rotate(-1deg);
  }
  75% {
    transform: translateY(-20px) rotate(0.5deg);
  }
}

/* Dragon Noise - subtle vibration effect from old/style.css */
@keyframes dragonNoise {
  0% {
    transform: translateY(0) rotate(0deg);
  }
  25% {
    transform: translateY(-2px) rotate(0.15deg);
  }
  50% {
    transform: translateY(1px) rotate(-0.15deg);
  }
  75% {
    transform: translateY(-1px) rotate(0.1deg);
  }
  100% {
    transform: translateY(0) rotate(0deg);
  }
}

/* Lotus Bloom - flower opening effect */
@keyframes lotusBloom {
  0% {
    transform: scale(1) rotate(0deg);
    filter: brightness(1);
  }
  50% {
    transform: scale(1.1) rotate(5deg);
    filter: brightness(1.2);
  }
  100% {
    transform: scale(1) rotate(0deg);
    filter: brightness(1);
  }
}

/* Gentle Rotate - for flower patterns */
@keyframes gentleRotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* Pulse Glow - spiritual glow effect */
@keyframes pulseGlow {
  0%, 100% {
    filter: drop-shadow(0 0 5px rgba(255, 231, 171, 0.3));
  }
  50% {
    filter: drop-shadow(0 0 20px rgba(255, 231, 171, 0.6));
  }
}

/* Shimmer - light flowing across text */
@keyframes shimmer {
  0% {
    background-position: -200% center;
  }
  100% {
    background-position: 200% center;
  }
}

/* Float - gentle up and down */
@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* Sway - like bamboo in wind */
@keyframes sway {
  0%, 100% {
    transform: rotate(-2deg);
  }
  50% {
    transform: rotate(2deg);
  }
}

/* Wave - flowing wave motion */
@keyframes wave {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

/* Scale In - zoom in effect */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Text Reveal - character by character */
@keyframes textReveal {
  from {
    opacity: 0;
    transform: translateY(20px) rotateX(-90deg);
  }
  to {
    opacity: 1;
    transform: translateY(0) rotateX(0);
  }
}

/* Lantern Swing */
@keyframes lanternSwing {
  0%, 100% {
    transform: rotate(-5deg);
  }
  50% {
    transform: rotate(5deg);
  }
}


/* ===== ANIMATION CLASSES ===== */

/* Scroll Reveal - elements start hidden */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-60px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.reveal-right {
  opacity: 0;
  transform: translateX(60px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.reveal-scale {
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* Stagger delays for sequential reveals */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }


/* ===== ELEMENT-SPECIFIC ANIMATIONS ===== */

/* Dragon - subtle noise vibration */
.philosophy__dragon {
  animation: dragonNoise 6s ease-in-out infinite;
}

/* Lotus flowers - bloom on hover */
.hero__lotus {
  transition: filter 0.5s ease;
}

.hero__lotus:hover {
  filter: brightness(1.2) drop-shadow(0 0 20px rgba(255, 200, 150, 0.6));
  /* Keep float animation, just add glow effect */
}

/* Flower patterns - gentle continuous rotation */
.philosophy__flower img,
.project__cta-flower img {
  animation: gentleRotate 20s linear infinite;
}

.philosophy__lang-toggle img {
  animation: gentleRotate 15s linear infinite reverse;
  transition: transform 0.3s ease;
}

.philosophy__lang-toggle:hover img {
  animation-play-state: paused;
  transform: scale(1.1);
}

/* Lanterns - swinging effect */
/* .gallery-preview__lanterns {
  transform-origin: top center;
  animation: lanternSwing 4s ease-in-out infinite;
} */

/* Gallery items - hover effects */
.gallery-preview__project {
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.gallery-preview__project:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* Gallery grid items */
.gallery__item {
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.gallery__item:hover {
  transform: scale(1.03);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
}

/* Mirror text shimmer effect */
.philosophy__quote .mirror {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.1) 0%,
    rgba(255, 255, 255, 0.3) 50%,
    rgba(255, 255, 255, 0.1) 100%
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  animation: shimmer 3s linear infinite;
}

/* Buttons - pulse glow */
.btn,
.project__cta-btn {
  transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
}

.btn:hover,
.project__cta-btn:hover {
  animation: pulseGlow 1.5s ease-in-out infinite;
}

/* Navigation links */
.nav__link {
  position: relative;
  transition: color 0.3s ease;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #86ff86, #ffe7ab);
  transition: width 0.3s ease;
}

.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

/* Footer links */
.footer__link {
  transition: color 0.3s ease, transform 0.3s ease;
  display: inline-block;
}

.footer__link:hover {
  color: #86ff86;
  transform: translateY(-2px);
}

/* Tool icons - float on hover */
.project__tool,
.about-contact__item-icon {
  transition: transform 0.4s ease;
}

.project__tool:hover,
.about-contact__item-icon:hover {
  animation: float 1s ease-in-out infinite;
}

/* Back button */
.project__back {
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.project__back:hover {
  border-color: #86ff86;
}

/* Bamboo sway */
.about-hero__bamboo img,
.project__decor--bamboo img {
  transform-origin: bottom center;
  animation: sway 6s ease-in-out infinite;
}

/* Temple subtle float */
.about-hero__temple {
  animation: float 10s ease-in-out infinite;
}

/* Scrolling text wave */
.about-hero__scrolling-text {
  animation: wave 30s linear infinite;
}


/* ===== PAGE LOAD ANIMATIONS ===== */

/* Hero section entrance */
.hero__content {
  animation: fadeInUp 1s ease forwards;
  animation-delay: 0.3s;
  opacity: 0;
}

.hero__lotus {
  animation: fadeIn 1.2s ease forwards, float 6s ease-in-out infinite;
  animation-delay: 0.6s;
  opacity: 0;
}

.hero__lotus--small {
  animation-delay: 0.8s;
}

/* Header entrance */
.header {
  animation: fadeInDown 0.8s ease forwards;
}

/* Philosophy section */
.philosophy__title {
  animation: fadeInLeft 0.8s ease forwards;
  animation-delay: 0.2s;
}

.philosophy__quote {
  animation: fadeIn 1s ease forwards;
}


/* ===== PARALLAX HELPER CLASSES ===== */

.parallax-slow {
  will-change: transform;
}

.parallax-medium {
  will-change: transform;
}

.parallax-fast {
  will-change: transform;
}


/* ===== LOADING ANIMATION ===== */

.page-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 1;
  visibility: visible;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

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

.page-loader.transitioning {
  opacity: 1;
  visibility: visible;
}

.page-loader__content {
  text-align: center;
}

.page-loader__logo {
  width: 80px;
  animation: pulseGlow 1s ease-in-out infinite;
}

.page-loader__text {
  color: #fff;
  font-family: 'Handjet', sans-serif;
  font-size: 20px;
  margin-top: 15px;
  opacity: 0.8;
}


/* ===== CURSOR EFFECTS ===== */

/* Custom cursor - main dot */
.cursor {
  width: 20px;
  height: 20px;
  border: 2px solid #ffe7ab;
  border-radius: 50%;
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  transition: transform 0.15s ease, opacity 0.15s ease, width 0.2s ease, height 0.2s ease;
  transform: translate(-50%, -50%);
  mix-blend-mode: difference;
  will-change: transform, width, height;
}

.cursor.cursor--hover {
  width: 50px;
  height: 50px;
  background: rgba(255, 231, 171, 0.1);
}

.cursor.cursor--click {
  transform: translate(-50%, -50%) scale(0.8);
}

/* Cursor trail dot */
.cursor-dot {
  width: 6px;
  height: 6px;
  background: #ffe7ab;
  border-radius: 50%;
  position: fixed;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  opacity: 0.6;
}

/* Hide custom cursor on touch devices */
@media (hover: none) and (pointer: coarse) {
  .cursor,
  .cursor-dot {
    display: none !important;
  }
}


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