:root {
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --reveal-duration: 0.9s;
}

html.has-motion {
  scroll-behavior: smooth;
}

.reveal {
  opacity: 0;
  transform: translateY(36px);
  filter: blur(6px);
  transition:
    opacity var(--reveal-duration) var(--ease-out-expo),
    transform var(--reveal-duration) var(--ease-out-expo),
    filter var(--reveal-duration) var(--ease-out-expo);
  transition-delay: var(--reveal-delay, 0s);
  will-change: opacity, transform, filter;
}

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

.reveal-scale {
  transform: translateY(28px) scale(0.96);
}

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

.reveal-fade {
  transform: none;
  filter: none;
}

.reveal-hero {
  transition-duration: 1.1s;
}

[data-hero-stagger] > .reveal-hero:nth-child(1) { --reveal-delay: 0.05s; }
[data-hero-stagger] > .reveal-hero:nth-child(2) { --reveal-delay: 0.14s; }
[data-hero-stagger] > .reveal-hero:nth-child(3) { --reveal-delay: 0.23s; }
[data-hero-stagger] > .reveal-hero:nth-child(4) { --reveal-delay: 0.32s; }
[data-hero-stagger] > .reveal-hero:nth-child(5) { --reveal-delay: 0.41s; }
[data-hero-stagger] > .reveal-hero:nth-child(6) { --reveal-delay: 0.5s; }

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    transparent 0%,
    rgba(52, 180, 244, 0.03) 40%,
    transparent 70%
  );
  transform: translateX(-100%);
  animation: hero-shine 8s var(--ease-out-expo) infinite;
  pointer-events: none;
}

@keyframes hero-shine {
  0%,
  70% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

.site-nav {
  transition:
    background 0.5s var(--ease-out-expo),
    border-color 0.5s var(--ease-out-expo),
    box-shadow 0.5s var(--ease-out-expo),
    backdrop-filter 0.5s var(--ease-out-expo);
}

.site-nav.is-scrolled {
  background: rgba(14, 17, 27, 0.96);
  border-color: var(--border-strong);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.28);
}

.section-header h2 {
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -10px;
  width: 48px;
  height: 2px;
  transform: translateX(-50%) scaleX(0);
  transform-origin: center;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  transition: transform 0.8s var(--ease-out-expo) 0.2s;
}

.section-header.is-visible h2::after,
.section-header.reveal.is-visible h2::after {
  transform: translateX(-50%) scaleX(1);
}

.service-card,
.panel-card,
.review-card,
.hero-card {
  transition:
    transform 0.45s var(--ease-out-expo),
    border-color 0.35s ease,
    box-shadow 0.45s var(--ease-out-expo),
    background 0.35s ease;
}

.service-card:hover,
.panel-card:hover,
.review-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.32);
}

.btn {
  transition:
    transform 0.35s var(--ease-out-expo),
    background 0.25s ease,
    border-color 0.25s ease,
    color 0.25s ease,
    box-shadow 0.35s var(--ease-out-expo);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
  transition-duration: 0.1s;
}

.filter-pill {
  transition:
    transform 0.3s var(--ease-out-expo),
    background 0.25s ease,
    border-color 0.25s ease,
    color 0.25s ease;
}

.filter-pill:hover {
  transform: translateY(-1px);
}

.nav-links a {
  position: relative;
  transition: color 0.3s ease;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease-out-expo);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  transform: scaleX(1);
}

.page-enter {
  animation: page-enter 0.7s var(--ease-out-expo) both;
}

@keyframes page-enter {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-scale,
  .reveal-fade {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
    transition: none !important;
  }

  .hero::after,
  .page-enter {
    animation: none !important;
  }

  .site-nav,
  .service-card,
  .panel-card,
  .review-card,
  .hero-card,
  .btn,
  .filter-pill {
    transition: none !important;
  }
}