@keyframes scanSweep {
  0% {
    transform: translateY(-100%);
    opacity: 0;
  }
  15% {
    opacity: 1;
  }
  85% {
    opacity: 1;
  }
  100% {
    transform: translateY(330px);
    opacity: 0;
  }
}

@keyframes marqueeScroll {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

@keyframes dashFlow {
  to {
    stroke-dashoffset: -48;
  }
}

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

.typing-caret {
  color: var(--accent);
  margin-left: 2px;
  animation: caretBlink 0.8s steps(2, start) infinite;
}

.healed-flash {
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 1px var(--accent) !important;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.scan-beam {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 44px;
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(30, 136, 229, 0.08) 78%,
    rgba(79, 156, 249, 0.28) 100%
  );
  pointer-events: none;
  animation: scanSweep 4.4s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.scan-beam.warn {
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(255, 107, 53, 0.06) 78%,
    rgba(255, 107, 53, 0.24) 100%
  );
}

.tilt-stage {
  perspective: 1500px;
}

.ide-shell {
  transform: rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg));
  transition: transform 0.24s ease-out;
  will-change: transform;
}

.chapter-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: rgba(255, 255, 255, 0.05);
  overflow: hidden;
}

.chapter-progress-bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: var(--blue);
}

.marquee-wrap {
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--light-line);
  border-bottom: 1px solid var(--light-line);
  background: var(--light-band);
  padding: 20px 0;
  mask-image: linear-gradient(
    90deg,
    transparent 0%,
    #000 8%,
    #000 92%,
    transparent 100%
  );
  -webkit-mask-image: linear-gradient(
    90deg,
    transparent 0%,
    #000 8%,
    #000 92%,
    transparent 100%
  );
}

.marquee-track {
  display: flex;
  width: max-content;
  gap: 12px;
  animation: marqueeScroll 38s linear infinite;
}

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

.marquee-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 6px;
  background: var(--light-card);
  border: 1px solid var(--light-line);
  font-family: var(--font-mono);
  font-size: 0.77rem;
  color: var(--ink);
  white-space: nowrap;
}

.marquee-pill i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--blue);
  display: inline-block;
}

.flow-line {
  stroke-dasharray: 6 6;
  animation: dashFlow 1.8s linear infinite;
}

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

.spotlight::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    420px circle at var(--mx, 50%) var(--my, -200px),
    rgba(79, 156, 249, 0.08),
    transparent 65%
  );
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

.spotlight:hover::before {
  opacity: 1;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.65s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: var(--d, 0ms);
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

.trend-path {
  stroke-dasharray: 320;
  stroke-dashoffset: 320;
  transition: stroke-dashoffset 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.in-view .trend-path {
  stroke-dashoffset: 0;
}

@media (prefers-reduced-motion: reduce) {
  .scan-beam,
  .marquee-track,
  .flow-line {
    animation: none !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}