/* ==========================================================================
   ANIMATIONS & EFFECTS - BETTER STACK SIGNATURE MOTION
   ========================================================================== */

@keyframes pulseGlow {
  0%, 100% {
    opacity: 0.4;
    transform: scale(1);
  }
  50% {
    opacity: 0.8;
    transform: scale(1.04);
  }
}

@keyframes pingDot {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  }
  70% {
    transform: scale(1);
    box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
  }
}

@keyframes marqueeLeft {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

@keyframes floatSlow {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-6px);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.96);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes streamIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Reusable Animation Classes */
.animate-ping-dot {
  animation: pingDot 2s cubic-bezier(0, 0, 0.2, 1) infinite;
}

.animate-pulse-glow {
  animation: pulseGlow 6s ease-in-out infinite;
}

.animate-float {
  animation: floatSlow 4s ease-in-out infinite;
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marqueeLeft 35s linear infinite;
}

/* Audio Wave Visualizer Bars */
@keyframes audioWaveBar {
  0%, 100% {
    height: 4px;
  }
  50% {
    height: 22px;
  }
}

.wave-bar:nth-child(1) { animation: audioWaveBar 1.2s ease-in-out infinite 0.1s; }
.wave-bar:nth-child(2) { animation: audioWaveBar 0.9s ease-in-out infinite 0.3s; }
.wave-bar:nth-child(3) { animation: audioWaveBar 1.4s ease-in-out infinite 0.0s; }
.wave-bar:nth-child(4) { animation: audioWaveBar 0.8s ease-in-out infinite 0.4s; }
.wave-bar:nth-child(5) { animation: audioWaveBar 1.1s ease-in-out infinite 0.2s; }
.wave-bar:nth-child(6) { animation: audioWaveBar 1.3s ease-in-out infinite 0.5s; }
.wave-bar:nth-child(7) { animation: audioWaveBar 0.7s ease-in-out infinite 0.15s; }

/* ECG / Pulse Wave Animation */
@keyframes ecgPulse {
  0% {
    stroke-dashoffset: 300;
  }
  50% {
    stroke-dashoffset: 0;
  }
  100% {
    stroke-dashoffset: -300;
  }
}

.ecg-line {
  stroke-dasharray: 300;
  animation: ecgPulse 3.5s linear infinite;
}

/* Shimmer Border Beam */
@keyframes borderBeamSweep {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.animate-border-beam {
  background-size: 200% 200%;
  animation: borderBeamSweep 6s ease infinite;
}

.marquee-track:hover {
  animation-play-state: paused;
}

/* ==========================================================================
   SCROLL-DRIVEN ANIMATION SYSTEM (BETTER STACK STYLE)
   ========================================================================== */

/* Top Telemetry Scroll Progress Indicator */
.scroll-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--cyan-400, #38bdf8), var(--emerald-400, #10b981), #818cf8);
  box-shadow: 0 0 12px rgba(56, 189, 248, 0.8), 0 0 4px rgba(16, 185, 129, 0.6);
  z-index: 99999;
  pointer-events: none;
  transition: width 0.08s ease-out;
}

/* Base Scroll Reveal Classes */
.scroll-reveal {
  opacity: 0;
  transform: translateY(32px);
  filter: blur(4px);
  transition: opacity 0.75s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.75s cubic-bezier(0.16, 1, 0.3, 1),
              filter 0.75s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform, filter;
}

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

/* Directional Variations */
.scroll-reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  filter: blur(4px);
  transition: opacity 0.75s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.75s cubic-bezier(0.16, 1, 0.3, 1),
              filter 0.75s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform, filter;
}

.scroll-reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
  filter: blur(0);
}

.scroll-reveal-right {
  opacity: 0;
  transform: translateX(40px);
  filter: blur(4px);
  transition: opacity 0.75s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.75s cubic-bezier(0.16, 1, 0.3, 1),
              filter 0.75s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform, filter;
}

.scroll-reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
  filter: blur(0);
}

.scroll-reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  filter: blur(6px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              filter 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform, filter;
}

.scroll-reveal-scale.revealed {
  opacity: 1;
  transform: scale(1);
  filter: blur(0);
}

/* Stagger Delay Modifiers */
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }
.reveal-delay-5 { transition-delay: 0.40s; }
.reveal-delay-6 { transition-delay: 0.48s; }

/* Subtle In-View Shimmer Flash */
@keyframes inViewShimmer {
  0% {
    box-shadow: 0 0 0 rgba(56, 189, 248, 0);
  }
  50% {
    box-shadow: 0 0 30px rgba(56, 189, 248, 0.18);
  }
  100% {
    box-shadow: 0 0 0 rgba(56, 189, 248, 0);
  }
}

.scroll-reveal.revealed.shimmer-on-reveal {
  animation: inViewShimmer 1.5s ease-out 0.3s;
}

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
  .scroll-reveal,
  .scroll-reveal-left,
  .scroll-reveal-right,
  .scroll-reveal-scale {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
    transition: none !important;
  }
  .scroll-progress-bar {
    display: none;
  }
}