/* === ANIMATIONS — Premium Light Theme === */

/* Fade in up — page sections entrance */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Fade in — modals, overlays */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Fade in scale — modal content */
@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.9) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* Slide in from left — sidebar mobile */
@keyframes slideInLeft {
  from { transform: translateX(-100%); }
  to { transform: translateX(0); }
}

/* Slide in from right — panels */
@keyframes slideInRight {
  from { transform: translateX(100%); }
  to { transform: translateX(0); }
}

/* Pulse glow — game icons, active elements */
@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 0 8px rgba(var(--accent-r), var(--accent-g), var(--accent-b), 0.10), 0 0 20px rgba(var(--accent-r), var(--accent-g), var(--accent-b), 0.04);
  }
  50% {
    box-shadow: 0 0 20px rgba(var(--accent-r), var(--accent-g), var(--accent-b), 0.20), 0 0 50px rgba(var(--accent-r), var(--accent-g), var(--accent-b), 0.08);
  }
}

/* Star pop — rating click */
@keyframes starPop {
  0% { transform: scale(1); }
  50% { transform: scale(1.35) rotate(15deg); }
  100% { transform: scale(1); }
}

/* Shimmer — skeleton loading */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* Ripple — button click */
@keyframes ripple {
  0% {
    transform: scale(0);
    opacity: 0.4;
  }
  100% {
    transform: scale(4);
    opacity: 0;
  }
}

/* Float particles */
@keyframes floatParticle {
  0%, 100% {
    transform: translateY(0) translateX(0);
    opacity: 0;
  }
  10% { opacity: 1; }
  90% { opacity: 1; }
  50% {
    transform: translateY(-40vh) translateX(20px);
  }
}

/* Gradient border rotation */
@keyframes gradientRotate {
  0% { --angle: 0deg; }
  100% { --angle: 360deg; }
}

/* Typing cursor blink */
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* Counter roll */
@keyframes countUp {
  from { transform: translateY(100%); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

/* Smooth bounce */
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* SVG draw — icon stroke animation */
@keyframes svgDraw {
  from { stroke-dashoffset: 100; }
  to   { stroke-dashoffset: 0; }
}

/* Glow pulse — for borders / rings */
@keyframes glowPulse {
  0%, 100% {
    border-color: rgba(var(--accent-r), var(--accent-g), var(--accent-b), 0.10);
    box-shadow: 0 0 10px rgba(var(--accent-r), var(--accent-g), var(--accent-b), 0.04);
  }
  50% {
    border-color: rgba(var(--accent-r), var(--accent-g), var(--accent-b), 0.20);
    box-shadow: 0 0 20px rgba(var(--accent-r), var(--accent-g), var(--accent-b), 0.10);
  }
}

/* Gradient shift — background animation */
@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Subtle float for decorative elements */
@keyframes subtleFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* === UTILITY CLASSES === */

.animate-fade-in-up {
  animation: fadeInUp 0.5s ease both;
}

.animate-fade-in {
  animation: fadeIn 0.3s ease both;
}

.animate-fade-in-scale {
  animation: fadeInScale 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

.animate-slide-left {
  animation: slideInLeft 0.3s ease both;
}

.animate-slide-right {
  animation: slideInRight 0.3s ease both;
}

/* Stagger children animations */
.stagger-children > * {
  animation: fadeInUp 0.45s ease both;
}
.stagger-children > *:nth-child(1) { animation-delay: 0ms; }
.stagger-children > *:nth-child(2) { animation-delay: 60ms; }
.stagger-children > *:nth-child(3) { animation-delay: 120ms; }
.stagger-children > *:nth-child(4) { animation-delay: 180ms; }
.stagger-children > *:nth-child(5) { animation-delay: 240ms; }
.stagger-children > *:nth-child(6) { animation-delay: 300ms; }
.stagger-children > *:nth-child(7) { animation-delay: 360ms; }
.stagger-children > *:nth-child(8) { animation-delay: 420ms; }

/* Skeleton loading placeholder */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-surface-2) 25%,
    var(--color-surface-hover) 50%,
    var(--color-surface-2) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

/* Ripple effect container */
.ripple-container {
  position: relative;
  overflow: hidden;
}

.ripple-container .ripple-effect {
  position: absolute;
  border-radius: 50%;
  background: rgba(99, 102, 241, 0.12);
  animation: ripple 0.6s linear forwards;
  pointer-events: none;
}

/* Page transition — slide + fade */
@keyframes pageSlideIn {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.995);
    filter: blur(2px);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0);
  }
}

@keyframes pageSlideOut {
  from {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0);
  }
  to {
    opacity: 0;
    transform: translateY(-10px) scale(0.995);
    filter: blur(2px);
  }
}

.page-enter {
  animation: pageSlideIn 0.4s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.page-exit {
  animation: pageSlideOut 0.2s cubic-bezier(0.55, 0, 1, 0.45) both;
}

/* Sidebar item stagger entrance */
@keyframes sidebarItemEnter {
  from {
    opacity: 0;
    transform: translateX(-14px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Shimmer sweep for premium button */
@keyframes shimmerSweep {
  0% { left: -100%; }
  100% { left: 200%; }
}

/* Sidebar ripple */
@keyframes sidebarRipple {
  0% {
    transform: scale(0);
    opacity: 0.35;
  }
  100% {
    transform: scale(2.5);
    opacity: 0;
  }
}

/* Hover lift */
.hover-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* Hover glow */
.hover-glow {
  transition: box-shadow var(--transition-base);
}
.hover-glow:hover {
  box-shadow: var(--shadow-glow-primary);
}