/* ==========================================================================
   Kubera Tech - Modern Scroll & Reveal Animations System (<250 lines)
   High-performance GPU-accelerated reveal effects, stagger animations,
   and ambient floating glow for modern UI/UX excellence.
   ========================================================================== */

/* Base hidden state for animated elements */
.reveal-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.75s cubic-bezier(0.16, 1, 0.3, 1), transform 0.75s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-fade {
  opacity: 0;
  transition: opacity 0.8s ease;
  will-change: opacity;
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.75s cubic-bezier(0.16, 1, 0.3, 1), transform 0.75s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

/* Revealed active state */
.reveal-up.is-revealed,
.reveal-fade.is-revealed,
.reveal-scale.is-revealed {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* Stagger delays for grid items and badges */
.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }
.delay-400 { transition-delay: 400ms; }
.delay-500 { transition-delay: 500ms; }

/* Subtle Ambient Gradient Flow for Hero text */
@keyframes gradientShimmer {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.gradient-text-animated {
  background: linear-gradient(135deg, #38bdf8 0%, #34d399 35%, #818cf8 70%, #38bdf8 100%);
  background-size: 250% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientShimmer 6s ease infinite;
}

/* Ambient Floating Glow Backdrop behind Hero */
.hero-glow-backdrop {
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 450px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.14) 0%, rgba(16, 185, 129, 0.08) 50%, rgba(10, 15, 29, 0) 75%);
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
  border-radius: 50%;
}

/* Dynamic Interactive Hover Micro-Interactions */
.interactive-card {
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.35s ease, border-color 0.35s ease, background 0.35s ease;
}

.interactive-card:hover {
  transform: translateY(-6px);
  border-color: rgba(56, 189, 248, 0.45);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4), 0 0 20px rgba(56, 189, 248, 0.18);
}