/* ==================================================================
   BLUESTIFT - ANIMATIONS v5.0
   All @keyframes and animation utilities
   Modern, smooth, performant
   ================================================================== */

/* FADE IN */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.fade-in {
  animation: fadeIn 0.5s ease;
}

/* FADE IN UP */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease;
}

/* SLIDE DOWN */
@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.slide-down {
  animation: slideDown 0.4s ease;
}

/* SLIDE UP */
@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.slide-up {
  animation: slideUp 0.5s ease;
}

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

.scale-in {
  animation: scaleIn 0.4s ease;
}

/* FLOAT (LEVITATION) */
@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

.float {
  animation: float 6s ease-in-out infinite;
}

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

.spin {
  animation: spin 1s linear infinite;
}

/* PULSE */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.8;
    transform: scale(1.05);
  }
}

.pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* BOUNCE */
@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.bounce {
  animation: bounce 1s ease-in-out infinite;
}

/* SHAKE */
@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  10%, 30%, 50%, 70%, 90% {
    transform: translateX(-5px);
  }
  20%, 40%, 60%, 80% {
    transform: translateX(5px);
  }
}

.shake {
  animation: shake 0.5s ease;
}

/* GRADIENT SHIFT (for backgrounds) */
@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

/* GLOW PULSE */
@keyframes glowPulse {
  0%, 100% {
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.3);
  }
  50% {
    box-shadow: 0 0 40px rgba(102, 126, 234, 0.6);
  }
}

.glow-pulse {
  animation: glowPulse 2s ease-in-out infinite;
}

/* SHIMMER */
@keyframes shimmer {
  0% {
    background-position: -200% center;
  }
  100% {
    background-position: 200% center;
  }
}

/* RIPPLE (for buttons) */
@keyframes ripple {
  from {
    transform: scale(0);
    opacity: 1;
  }
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* ROTATE */
@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* SWING */
@keyframes swing {
  0%, 100% {
    transform: rotate(0deg);
  }
  20% {
    transform: rotate(15deg);
  }
  40% {
    transform: rotate(-10deg);
  }
  60% {
    transform: rotate(5deg);
  }
  80% {
    transform: rotate(-5deg);
  }
}

.swing {
  transform-origin: top center;
  animation: swing 1s ease-in-out;
}

/* SLIDE IN RIGHT */
@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.slide-in-right {
  animation: slideInRight 0.5s ease;
}

/* SLIDE OUT RIGHT */
@keyframes slideOutRight {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(100px);
  }
}

.slide-out-right {
  animation: slideOutRight 0.5s ease;
}

/* ANIMATION DELAYS */
.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }

/* ANIMATION DURATIONS */
.duration-fast { animation-duration: 0.15s; }
.duration-base { animation-duration: 0.25s; }
.duration-slow { animation-duration: 0.35s; }
.duration-slower { animation-duration: 0.5s; }

/* ANIMATION UTILITIES */
.animate-once { animation-iteration-count: 1; }
.animate-infinite { animation-iteration-count: infinite; }

/* SCROLL ANIMATIONS (with Intersection Observer) */
.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

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

/* HOVER ANIMATIONS */
.hover-lift {
  transition: transform var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-4px);
}

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

.hover-scale:hover {
  transform: scale(1.05);
}

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

.hover-rotate:hover {
  transform: rotate(5deg);
}

/* LOADING SPINNER */
.spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 4px solid var(--glass-border);
  border-top-color: var(--color-primary-start);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* SKELETON LOADER */
@keyframes skeleton-loading {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-surface) 0%,
    var(--glass-bg) 50%,
    var(--color-surface) 100%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

/* REDUCED MOTION */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .float,
  .spin,
  .pulse,
  .bounce,
  .glow-pulse,
  .swing {
    animation: none;
  }
}