/* ==========================================================================
   Animations & Transitions
   ========================================================================== */

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

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

@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeRight {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}

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

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

@keyframes float-slow {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
  100% { transform: translateY(0px); }
}

@keyframes pulse-glow {
  0% { box-shadow: 0 0 0 0 rgba(0, 112, 243, 0.4); }
  70% { box-shadow: 0 0 0 20px rgba(0, 112, 243, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 112, 243, 0); }
}

@keyframes shimmer {
  0% { background-position: -1000px 0; }
  100% { background-position: 1000px 0; }
}

/* Animation Classes */
.animate-fade-in { animation: fadeIn 0.8s ease-out forwards; }
.animate-fade-up { animation: fadeUp 0.8s ease-out forwards; }
.animate-fade-down { animation: fadeDown 0.8s ease-out forwards; }
.animate-fade-left { animation: fadeLeft 0.8s ease-out forwards; }
.animate-fade-right { animation: fadeRight 0.8s ease-out forwards; }
.animate-scale-in { animation: scaleIn 0.8s ease-out forwards; }

.animate-float { animation: float 3s ease-in-out infinite; }
.animate-float-slow { animation: float-slow 6s ease-in-out infinite; }
.animate-pulse-glow { animation: pulse-glow 2s infinite; }

/* Scroll Reveal Initial States (Used with JS Intersection Observer) */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

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

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

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

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

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

/* Staggered Delay Utilities */
.delay-100 { transition-delay: 100ms; animation-delay: 100ms; }
.delay-200 { transition-delay: 200ms; animation-delay: 200ms; }
.delay-300 { transition-delay: 300ms; animation-delay: 300ms; }
.delay-400 { transition-delay: 400ms; animation-delay: 400ms; }
.delay-500 { transition-delay: 500ms; animation-delay: 500ms; }

/* Loading Animation skeleton */
.skeleton {
  background: var(--color-bg-alt);
  background-image: linear-gradient(
    to right,
    var(--color-bg-alt) 0%,
    var(--color-border) 20%,
    var(--color-bg-alt) 40%,
    var(--color-bg-alt) 100%
  );
  background-repeat: no-repeat;
  background-size: 800px 100%;
  animation: shimmer 2s infinite linear forwards;
}

/* Page Preloader */
#preloader {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: var(--color-bg-default);
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: opacity 0.5s ease-out, visibility 0.5s ease-out;
}

#preloader.loaded {
  opacity: 0;
  visibility: hidden;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 3px solid rgba(0, 112, 243, 0.2);
  border-radius: 50%;
  border-top-color: var(--color-primary);
  animation: spin 1s ease-in-out infinite;
}

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