/* Extra-smooth motion layer */
:root {
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);
  --dur: 0.55s;
  --dur-fast: 0.28s;
}

html {
  scroll-behavior: smooth;
}

a,
button,
.btn,
.card,
.why-card,
.price-card,
.nav-cta,
.filter-btn,
.shot,
.blog-card,
.review-card,
.step-icon,
.step-badge {
  transition:
    transform var(--dur-fast) var(--ease-out),
    background-color var(--dur-fast) var(--ease-soft),
    border-color var(--dur-fast) var(--ease-soft),
    color var(--dur-fast) var(--ease-soft),
    box-shadow var(--dur-fast) var(--ease-soft),
    opacity var(--dur-fast) var(--ease-soft),
    filter var(--dur-fast) var(--ease-soft);
}

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

.btn:active {
  transform: translateY(0) scale(0.98);
}

.btn-primary:hover {
  box-shadow: 0 14px 34px rgba(168, 85, 247, 0.45);
}

.nav {
  transition: background 0.35s var(--ease-soft), box-shadow 0.35s var(--ease-soft), border-color 0.35s var(--ease-soft);
}

.nav.is-scrolled {
  background: rgba(11, 9, 20, 0.92);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
  border-bottom-color: rgba(168, 85, 247, 0.28);
}

.nav-links a {
  position: relative;
}

.nav-links a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.35rem;
  height: 2px;
  border-radius: 999px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--dur-fast) var(--ease-out);
}

.nav-links a:not(.nav-cta):hover::after,
.nav-links a:not(.nav-cta).active::after {
  transform: scaleX(1);
}

.card:hover,
.why-card:hover,
.price-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

.hero h1,
.page-header h1,
.section-title {
  letter-spacing: -0.03em;
}

img {
  transition: opacity 0.45s var(--ease-soft), transform 0.45s var(--ease-out);
}

img[data-loading="true"] {
  opacity: 0;
}

.shot img,
.blog-card-media img,
.article-hero img,
.hero-card .preview img {
  will-change: transform;
}

.video-frame {
  transition: box-shadow 0.4s var(--ease-soft), border-color 0.4s var(--ease-soft);
}

.video-frame:hover {
  border-color: var(--border-strong);
  box-shadow: 0 22px 60px rgba(168, 85, 247, 0.2);
}

.video-poster {
  transition: opacity 0.4s var(--ease-soft), visibility 0.4s var(--ease-soft), transform 0.4s var(--ease-out);
}

.video-poster:hover .video-poster-title {
  filter: brightness(1.08);
}

.reviews-track {
  animation-timing-function: linear;
}

.step-icon {
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-soft);
}

.step-item:hover .step-icon {
  transform: translateY(-4px) scale(1.04);
  box-shadow:
    0 0 0 4px rgba(168, 85, 247, 0.12),
    0 0 36px rgba(168, 85, 247, 0.45);
}

.faq details {
  transition: border-color var(--dur-fast) var(--ease-soft), background var(--dur-fast) var(--ease-soft);
}

.faq details[open] {
  border-color: var(--border-strong);
  background: var(--bg-card-hover);
}

.faq details p {
  animation: fade-up 0.35s var(--ease-out);
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity var(--dur) var(--ease-out),
    transform var(--dur) var(--ease-out);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

.reveal-delay-1 { transition-delay: 0.06s; }
.reveal-delay-2 { transition-delay: 0.12s; }
.reveal-delay-3 { transition-delay: 0.18s; }
.reveal-delay-4 { transition-delay: 0.24s; }

.blog-card {
  transition:
    opacity 0.35s var(--ease-soft),
    transform 0.35s var(--ease-out),
    background-color var(--dur-fast) var(--ease-soft),
    border-color var(--dur-fast) var(--ease-soft),
    box-shadow var(--dur-fast) var(--ease-soft);
}

.blog-card.hidden {
  display: none;
}

.blog-card.is-filtering-out {
  opacity: 0;
  transform: scale(0.97);
  pointer-events: none;
}

.back-to-top {
  position: fixed;
  right: 1.1rem;
  bottom: 1.1rem;
  z-index: 80;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  background: rgba(22, 20, 34, 0.92);
  color: #fff;
  cursor: pointer;
  display: grid;
  place-items: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.3s var(--ease-soft), transform 0.3s var(--ease-out), visibility 0.3s, background 0.25s;
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.back-to-top:hover {
  background: var(--accent);
  border-color: var(--accent);
}

@media (max-width: 900px) {
  .nav-links {
    transition: none;
  }

  .nav-links a:not(.nav-cta)::after {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  body,
  .announce,
  .reveal,
  .faq details p {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }

  .back-to-top {
    transition: opacity 0.2s linear;
  }
}