@import url('./system.css');

/* --------------------------------------------------
   KEYFRAMES
-------------------------------------------------- */

@keyframes ct-float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-0.5rem);
  }
}

@keyframes ct-sweep {
  0% {
    transform: translateX(-110%);
    opacity: 0;
  }
  20% {
    opacity: 1;
  }
  100% {
    transform: translateX(110%);
    opacity: 0;
  }
}

@keyframes ct-pulse-ring {
  0% {
    transform: translate(-50%, -50%) scale(0.92);
    opacity: 0.45;
  }
  100% {
    transform: translate(-50%, -50%) scale(1.16);
    opacity: 0;
  }
}

@keyframes ct-blur-resolve {
  0% {
    opacity: 0;
    filter: blur(10px);
    transform: translateY(1rem) scale(0.985);
  }
  100% {
    opacity: 1;
    filter: blur(0);
    transform: translateY(0) scale(1);
  }
}

@keyframes ct-line-draw {
  0% {
    transform: scaleX(0);
    opacity: 0.35;
  }
  100% {
    transform: scaleX(1);
    opacity: 1;
  }
}

@keyframes ct-zoom-settle {
  0% {
    opacity: 0;
    transform: scale(1.08);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes ct-soft-glow {
  0%, 100% {
    box-shadow: 0 0 0 rgba(244,211,106,0);
  }
  50% {
    box-shadow: 0 0 28px rgba(244,211,106,0.18);
  }
}

/* --------------------------------------------------
   REVEAL HELPERS
-------------------------------------------------- */

.reveal-up {
  opacity: 0;
  transform: translateY(1.5rem);
  transition:
    opacity var(--dur-slow) var(--ease-cinematic),
    transform var(--dur-slow) var(--ease-cinematic);
}

.reveal-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-blur {
  opacity: 0;
  filter: blur(10px);
  transform: translateY(1rem) scale(0.985);
}

.reveal-blur.is-visible {
  animation: ct-blur-resolve var(--dur-xl) var(--ease-cinematic) both;
}

.zoom-reveal {
  opacity: 0;
  transform: scale(1.08);
}

.zoom-reveal.is-visible {
  animation: ct-zoom-settle var(--dur-xl) var(--ease-soft) both;
}

/* --------------------------------------------------
   OVERLAYS / SIGNAL SWEEP
-------------------------------------------------- */

.sweep-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(
    120deg,
    transparent 35%,
    rgba(255,255,255,0.08),
    transparent 65%
  );
  mix-blend-mode: screen;
  opacity: 0;
}

.sweep-overlay.is-active {
  animation: ct-sweep var(--dur-xl) var(--ease-soft) both;
}

.signal-surface {
  position: relative;
  overflow: hidden;
}

.signal-surface::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    transparent 35%,
    rgba(255,255,255,0.08),
    transparent 65%
  );
  transform: translateX(-110%);
  opacity: 0;
  pointer-events: none;
}

.signal-surface:hover::after {
  animation: ct-sweep var(--dur-xl) var(--ease-soft) both;
}

/* --------------------------------------------------
   AMBIENT MOTION
-------------------------------------------------- */

.float-ambient {
  animation: ct-float 4s ease-in-out infinite;
}

.glow-idle {
  animation: ct-soft-glow 3.2s ease-in-out infinite;
}

/* --------------------------------------------------
   GLOBAL TRANSITION OVERLAY
-------------------------------------------------- */

.transition-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  pointer-events: none;
  opacity: 0;
  background: radial-gradient(
    circle at center,
    rgba(244,211,106,0.08),
    rgba(0,0,0,0.95)
  );
  transition: opacity var(--dur-slow) var(--ease-cinematic);
}

.transition-overlay.is-active {
  opacity: 1;
}

/* --------------------------------------------------
   HOVER GLOW
-------------------------------------------------- */

.hover-glow {
  transition:
    transform var(--dur-base) var(--ease-standard),
    box-shadow var(--dur-base) var(--ease-standard),
    border-color var(--dur-base) var(--ease-standard);
}

.hover-glow:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: var(--shadow-deep), var(--glow-accent-md);
  border-color: var(--color-line-strong);
}

/* --------------------------------------------------
   PULSE NODE
-------------------------------------------------- */

.pulse-node {
  position: relative;
}

.pulse-node::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(244,211,106,0.26);
  transform: translate(-50%, -50%);
  animation: ct-pulse-ring 2.2s ease-out infinite;
  pointer-events: none;
}

/* --------------------------------------------------
   LINE DRAW
-------------------------------------------------- */

.line-draw {
  transform-origin: left center;
  animation: ct-line-draw var(--dur-xl) var(--ease-cinematic) both;
}

/* --------------------------------------------------
   MOTION DEMO HELPERS
-------------------------------------------------- */

.motion-demo-fade,
.motion-demo-blur,
.motion-demo-zoom,
.motion-demo-line {
  position: relative;
  min-height: 12rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-line);
  background: rgba(255,255,255,0.02);
  padding: var(--space-xl);
  overflow: hidden;
}

.motion-demo-line::before {
  content: '';
  position: absolute;
  top: 2rem;
  left: 2rem;
  width: calc(100% - 4rem);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-line-strong), transparent);
  transform-origin: left center;
  animation: ct-line-draw var(--dur-xl) var(--ease-cinematic) both;
}

.motion-demo-blur .demo-word {
  display: inline-block;
  animation: ct-blur-resolve var(--dur-xl) var(--ease-cinematic) both;
}

.motion-demo-zoom .demo-frame {
  animation: ct-zoom-settle var(--dur-xl) var(--ease-soft) both;
}

.motion-demo-fade .demo-copy {
  opacity: 0;
  transform: translateY(1rem);
  animation: ct-blur-resolve var(--dur-xl) var(--ease-cinematic) both;
  filter: blur(0);
}

/* --------------------------------------------------
   REDUCED MOTION
-------------------------------------------------- */

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

  .reveal-up,
  .reveal-up.is-visible,
  .reveal-blur,
  .zoom-reveal,
  .motion-demo-fade .demo-copy,
  .motion-demo-blur .demo-word,
  .motion-demo-zoom .demo-frame {
    opacity: 1 !important;
    filter: none !important;
    transform: none !important;
    animation: none !important;
  }

  .sweep-overlay,
  .signal-surface::after,
  .pulse-node::after {
    animation: none !important;
  }
}