/**
 * Animations & Transitions
 * Keyframes, scroll animations, and transitions
 */

/* ============================================
   KEYFRAME ANIMATIONS
   ============================================ */

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

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

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

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

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

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.5);
  }
  50% {
    box-shadow: 0 0 40px rgba(139, 92, 246, 0.8), 0 0 60px rgba(59, 130, 246, 0.6);
  }
}

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

/* ============================================
   SCROLL ANIMATIONS (Intersection Observer)
   ============================================ */

/* Elements with data-animate attribute */
[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

[data-animate].animate-in {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger effect for multiple elements */
[data-animate].animate-in:nth-child(1) { transition-delay: 0.1s; }
[data-animate].animate-in:nth-child(2) { transition-delay: 0.2s; }
[data-animate].animate-in:nth-child(3) { transition-delay: 0.3s; }
[data-animate].animate-in:nth-child(4) { transition-delay: 0.4s; }
[data-animate].animate-in:nth-child(5) { transition-delay: 0.5s; }
[data-animate].animate-in:nth-child(6) { transition-delay: 0.6s; }

/* ============================================
   LOADING STATES
   ============================================ */

.loading {
  position: relative;
  overflow: hidden;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
  animation: shimmer 2s infinite;
}

/* ============================================
   HOVER EFFECTS
   ============================================ */

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

.hover-lift:hover {
  transform: translateY(-8px);
}

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

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

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

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

/* ============================================
   TRANSITIONS
   ============================================ */

.transition-all {
  transition: all var(--transition-base);
}

.transition-colors {
  transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
}

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

.transition-opacity {
  transition: opacity var(--transition-base);
}

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

.page-load-fade-in {
  animation: fadeIn 0.6s var(--ease-out);
}

/* ============================================
   SPECIAL EFFECTS
   ============================================ */

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

.animated-gradient {
  background: linear-gradient(
    270deg,
    var(--color-primary),
    var(--color-secondary),
    var(--color-accent),
    var(--color-primary)
  );
  background-size: 400% 400%;
  animation: gradientShift 8s ease infinite;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Neon glow animation */
.neon-glow {
  animation: glow 2s ease-in-out infinite;
}

/* Floating animation for decorative elements */
.float-animation {
  animation: float 6s ease-in-out infinite;
}

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

/* ============================================
   REDUCE MOTION SUPPORT
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  [data-animate] {
    opacity: 1;
    transform: none;
  }
}