/* ============================================================
   DIAL DESIGNS — Scroll & Motion Effects
   Site-wide: scroll-reveal, progress bar, aurora hero,
   cursor-reactive product cards, animated stats.
   All effects are transform/opacity only (GPU-cheap) and
   fully disabled under prefers-reduced-motion.
   ============================================================ */

/* ── Scroll progress bar ─────────────────────────────────── */

.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  z-index: 300;
  background: linear-gradient(90deg, var(--accent), var(--brand-300), var(--sigil-500));
  transition: width 80ms linear;
  pointer-events: none;
}

/* ── Scroll-reveal ────────────────────────────────────────── */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 700ms cubic-bezier(.16,1,.3,1), transform 700ms cubic-bezier(.16,1,.3,1);
  will-change: opacity, transform;
}

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

.reveal-stagger > * {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 700ms cubic-bezier(.16,1,.3,1), transform 700ms cubic-bezier(.16,1,.3,1);
}

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

.reveal-stagger.in-view > *:nth-child(1) { transition-delay: 0ms; }
.reveal-stagger.in-view > *:nth-child(2) { transition-delay: 80ms; }
.reveal-stagger.in-view > *:nth-child(3) { transition-delay: 160ms; }
.reveal-stagger.in-view > *:nth-child(4) { transition-delay: 240ms; }
.reveal-stagger.in-view > *:nth-child(5) { transition-delay: 320ms; }
.reveal-stagger.in-view > *:nth-child(6) { transition-delay: 400ms; }

/* ── Aurora hero background ──────────────────────────────── */

.hero {
  isolation: isolate;
}

.aurora {
  position: absolute;
  inset: -20%;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.aurora__blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: .3;
  mix-blend-mode: screen;
  animation: aurora-drift 22s ease-in-out infinite alternate;
}

.aurora__blob:nth-child(1) {
  width: 36vw; height: 36vw;
  top: 0%; left: 4%;
  background: radial-gradient(circle, var(--brand-500), transparent 70%);
  animation-duration: 24s;
}

.aurora__blob:nth-child(2) {
  width: 22vw; height: 22vw;
  top: 28%; left: 68%;
  background: radial-gradient(circle, var(--sigil-500), transparent 70%);
  opacity: .18;
  animation-duration: 28s;
  animation-delay: -6s;
}

.aurora__blob:nth-child(3) {
  width: 26vw; height: 26vw;
  top: 40%; left: 38%;
  background: radial-gradient(circle, var(--sheek-500), transparent 70%);
  opacity: .16;
  animation-duration: 26s;
  animation-delay: -12s;
}

@keyframes aurora-drift {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(4%, -6%) scale(1.12); }
  100% { transform: translate(-5%, 4%) scale(0.96); }
}

.hero__title, .hero__subtitle, .hero__actions, .hero__meta {
  position: relative;
  z-index: 1;
}

/* parallax layer driven by JS setting --parallax-y */
[data-parallax] {
  transform: translateY(calc(var(--parallax-y, 0px)));
  will-change: transform;
}

/* ── Animated stat counters ──────────────────────────────── */

.hero__meta {
  gap: var(--s-10);
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat__num {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--w-black);
  color: var(--text-1);
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.stat__label {
  font-size: var(--text-xs);
  color: var(--text-4);
  text-transform: uppercase;
  letter-spacing: .04em;
}

/* ── Cursor-reactive product cards ───────────────────────── */

.product-card {
  --mx: 50%;
  --my: 0%;
  transform-style: preserve-3d;
  transition: border-color var(--ease-normal), box-shadow var(--ease-normal), transform 200ms ease-out;
}

.product-card::before {
  background: radial-gradient(circle 280px at var(--mx) var(--my),
    var(--product-glow, transparent), transparent 70%);
}

.product-card:hover {
  box-shadow: var(--shadow-lg), 0 0 60px -20px var(--product-glow, transparent);
}

/* ── Section background drift (subtle dot grid) ──────────── */

.section-grid-bg {
  position: relative;
}

.section-grid-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: radial-gradient(circle, var(--border-subtle) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: .35;
  mask-image: linear-gradient(to bottom, transparent, black 15%, black 85%, transparent);
  pointer-events: none;
}

/* ── Nav scroll state ─────────────────────────────────────── */

.nav {
  transition: box-shadow var(--ease-normal), background var(--ease-normal);
}

.nav.is-scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(9, 9, 15, 0.96);
}

/* ── Reduced motion ───────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-stagger > * {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .aurora__blob { animation: none !important; }
  [data-parallax] { transform: none !important; }
  .product-card { transition: border-color var(--ease-normal), box-shadow var(--ease-normal) !important; }
  .product-card:hover { transform: none !important; }
}