/* ============================================
   KṬP Saikhamakawn — Animations
   Micro-animations & transitions
   ============================================ */

/* === Keyframes === */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

@keyframes slideDown {
  from { transform: translateY(-100%); }
  to { transform: translateY(0); }
}

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

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

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

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

@keyframes float-centered {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, -6px); }
}

@keyframes glow {
  0%, 100% { box-shadow: 0 0 5px rgba(135, 206, 235, 0.3); }
  50% { box-shadow: 0 0 20px rgba(135, 206, 235, 0.6); }
}

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

/* === Animation Classes === */
.animate-fade-in { animation: fadeIn var(--transition-base) ease forwards; }
.animate-fade-in-up { animation: fadeInUp 0.5s ease forwards; }
.animate-fade-in-down { animation: fadeInDown 0.5s ease forwards; }
.animate-fade-in-left { animation: fadeInLeft 0.5s ease forwards; }
.animate-fade-in-right { animation: fadeInRight 0.5s ease forwards; }
.animate-scale-in { animation: scaleIn 0.3s ease forwards; }
.animate-slide-up { animation: slideUp 0.4s ease forwards; }
.animate-pulse { animation: pulse 2s infinite; }
.animate-float { animation: float 3s ease-in-out infinite; }
.animate-spin { animation: spin 1s linear infinite; }

/* === Scroll-triggered animations === */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Stagger children animations */
.stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.stagger-children.revealed > *:nth-child(1) { transition-delay: 0.05s; }
.stagger-children.revealed > *:nth-child(2) { transition-delay: 0.1s; }
.stagger-children.revealed > *:nth-child(3) { transition-delay: 0.15s; }
.stagger-children.revealed > *:nth-child(4) { transition-delay: 0.2s; }
.stagger-children.revealed > *:nth-child(5) { transition-delay: 0.25s; }
.stagger-children.revealed > *:nth-child(6) { transition-delay: 0.3s; }
.stagger-children.revealed > *:nth-child(7) { transition-delay: 0.35s; }
.stagger-children.revealed > *:nth-child(8) { transition-delay: 0.4s; }

.stagger-children.revealed > * {
  opacity: 1;
  transform: translateY(0);
}

/* === Hover transitions === */
.hover-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-shadow-hover);
}

.hover-scale {
  transition: transform var(--transition-base);
}

.hover-scale:hover {
  transform: scale(1.03);
}

.hover-glow {
  transition: box-shadow var(--transition-base);
}

.hover-glow:hover {
  box-shadow: var(--shadow-glow);
}

/* === Loading skeleton === */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-bg-hover) 0%,
    var(--color-bg-card) 50%,
    var(--color-bg-hover) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

.skeleton-text {
  height: 14px;
  margin-bottom: var(--sp-2);
  border-radius: var(--radius-sm);
}

.skeleton-title {
  height: 20px;
  width: 60%;
  margin-bottom: var(--sp-3);
  border-radius: var(--radius-sm);
}

.skeleton-image {
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: var(--radius-lg);
}

/* === Page Transition === */
.page-enter {
  animation: fadeIn 0.3s ease;
}

/* === Modal animations === */
.modal-backdrop-enter {
  animation: fadeIn 0.2s ease forwards;
}

.modal-content-enter {
  animation: scaleIn 0.3s var(--transition-spring) forwards;
}