/* Premium Design System for Nova Academy */

:root {
  --primary-glow: rgba(0, 10, 30, 0.15);
  --secondary-glow: rgba(103, 94, 63, 0.15);
  --transition-smooth: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Page Transitions */
body {
  opacity: 0;
  transition: opacity 0.8s ease-out;
}

body.loaded {
  opacity: 1;
}

/* Reveal Animations */
.reveal {
  opacity: 0;
  transform: translateY(30px) translateZ(0);
  transition: var(--transition-smooth);
  backface-visibility: hidden;
  will-change: transform, opacity;
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-30px) translateZ(0);
  transition: var(--transition-smooth);
  backface-visibility: hidden;
  will-change: transform, opacity;
}

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

.reveal-right {
  opacity: 0;
  transform: translateX(30px) translateZ(0);
  transition: var(--transition-smooth);
  backface-visibility: hidden;
  will-change: transform, opacity;
}

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

/* Staggered Children Reveal */
.reveal-group > * {
  opacity: 0;
  transform: translateY(20px) translateZ(0);
  transition: var(--transition-smooth);
  backface-visibility: hidden;
  will-change: transform, opacity;
}

.reveal-group.active > * {
  opacity: 1;
  transform: translateY(0) translateZ(0);
}

/* Set delays for up to 10 children */
.reveal-group.active > *:nth-child(1) { transition-delay: 0.1s; }
.reveal-group.active > *:nth-child(2) { transition-delay: 0.2s; }
.reveal-group.active > *:nth-child(3) { transition-delay: 0.3s; }
.reveal-group.active > *:nth-child(4) { transition-delay: 0.4s; }
.reveal-group.active > *:nth-child(5) { transition-delay: 0.5s; }

/* Premium Hover Effects */
.hover-lift {
  transition: var(--transition-smooth);
  backface-visibility: hidden;
  transform: translateZ(0);
  -webkit-font-smoothing: subpixel-antialiased;
  will-change: transform, box-shadow;
}

.hover-lift:hover {
  transform: translateY(-8px) scale(1.01) translateZ(0);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.hover-glow {
  position: relative;
  overflow: hidden;
}

.hover-glow::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.hover-glow:hover::after {
  opacity: 1;
}

/* Magnetic Button Utility Classes */
.magnetic {
  display: inline-block;
  transition: transform 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* Glassmorphism Refinement */
.premium-glass {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

/* Floating Animation */
@keyframes float {
  0% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(2deg); }
  100% { transform: translateY(0px) rotate(0deg); }
}

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

.animate-float-delayed {
  animation: float 6s ease-in-out infinite;
  animation-delay: 2s;
}

/* Text Gradient */
.text-gradient {
  background: linear-gradient(135deg, #000a1e 0%, #675e3f 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Details/FAQ Animation Dropdown */
details > summary {
  list-style: none; /* remove default arrow */
}
details > summary::-webkit-details-marker {
  display: none;
}
details[open] summary ~ * {
  animation: details-show 0.4s ease-out;
}
/* Global Sharpness Fix for Transitions */
.transition-transform, 
[class*='hover:scale'], 
[class*='hover:-translate'],
[class*='hover:translate'] {
  backface-visibility: hidden;
  transform: translateZ(0);
  -webkit-font-smoothing: subpixel-antialiased;
  will-change: transform;
}

@keyframes details-show {
  from {
    opacity: 0;
    transform: translateY(-8px) translateZ(0);
  }
  to {
    opacity: 1;
    transform: translateY(0) translateZ(0);
  }
}