/* ============================================================
   SKECHERS Vernal — Scroll-Scrub Film
   Axionis · craft at the speed of AI
   Scroll drives a 258-frame cinematic sequence of the real shoe.
   ============================================================ */

:root {
  --bg: #13161a;            /* basalt charcoal */
  --bg-soft: #1e242a;
  --ink: #f4f1ea;           /* bone */
  --muted: #7d8790;         /* stone */
  --accent: #e2662c;        /* burnt orange */
  --accent-soft: #f0a071;
  --line: rgba(244, 241, 234, 0.10);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font-display: "Archivo", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
body { background: var(--bg); color: var(--ink); font-family: var(--font-body); line-height: 1.5; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
em { font-style: normal; color: var(--accent); }
.lenis.lenis-smooth { scroll-behavior: auto !important; }

.cap__hero, .cap__title, .stat__num, .nav__brand, .preloader__count, .footer__big {
  font-weight: 900; letter-spacing: -0.02em;
}

/* ============ PRELOADER ============ */
.preloader { position: fixed; inset: 0; z-index: 1000; background: var(--bg); display: grid; place-items: center; }
.preloader__inner { width: min(420px, 70vw); text-align: center; }
.preloader__mark { font-weight: 600; letter-spacing: 0.5em; font-size: 0.8rem; color: var(--muted); margin-bottom: 1.4rem; padding-left: 0.5em; }
.preloader__bar { height: 2px; width: 100%; background: var(--line); border-radius: 2px; overflow: hidden; }
.preloader__fill { display: block; height: 100%; width: 0%; background: var(--accent); }
.preloader__count { margin-top: 1rem; font-family: var(--font-display); font-size: 2.4rem; color: var(--ink); }
.preloader__count i { font-style: normal; color: var(--muted); font-size: 1rem; }

/* ============ PROGRESS + NAV ============ */
.progress { position: fixed; top: 0; left: 0; height: 3px; width: 0%; background: var(--accent); z-index: 200; box-shadow: 0 0 18px rgba(226,102,44,0.6); }
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 150; display: flex; align-items: center; justify-content: space-between; padding: 1.5rem clamp(1.2rem, 4vw, 3rem); mix-blend-mode: difference; transition: transform 0.5s var(--ease); }
.nav.is-hidden { transform: translateY(-110%); }
.nav__logo { height: 17px; width: auto; display: block; }

/* ============ FILM (scroll-scrub) ============ */
.film { position: relative; height: 650vh; }              /* scroll distance for the full scrub */
.film__stage { position: sticky; top: 0; height: 100svh; overflow: hidden; background: var(--bg); }
#seq { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.film__veil { position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(90deg, rgba(19,22,26,0.55) 0%, transparent 45%),
              linear-gradient(to top, rgba(19,22,26,0.6) 0%, transparent 30%); }

/* caption beats */
.caps { position: absolute; inset: 0; z-index: 4; pointer-events: none; }
.cap { position: absolute; opacity: 0; will-change: opacity, transform; }
.cap a, .cap .cap__cta { pointer-events: auto; }
.cap--center { left: 50%; top: 50%; transform: translate(-50%, -50%); text-align: center; width: min(90vw, 40rem); }
.cap--left { left: clamp(1.4rem, 6vw, 6rem); top: 50%; transform: translateY(-50%); max-width: 32rem; }
/* hero intro: anchored at the bottom so the shoe (centred in the frame) stays clear */
.cap--hero { left: 50%; bottom: clamp(7vh, 10vh, 12vh); transform: translateX(-50%); text-align: center; width: min(94vw, 48rem); }
.cap--hero .cap__hero { font-size: clamp(2.4rem, 10vw, 7.5rem); line-height: 0.92; }
.cap--hero .cap__eyebrow { margin-bottom: 0.5rem; }
.cap--hero .cap__sub { margin-top: 0.7rem; opacity: 0.78; }

.cap__eyebrow { font-size: 0.82rem; letter-spacing: 0.5em; text-transform: uppercase; color: var(--accent-soft); margin-bottom: 0.8rem; padding-left: 0.5em; }
.cap__hero { font-family: var(--font-display); font-size: clamp(4rem, 17vw, 15rem); line-height: 0.9; text-transform: uppercase; }
.cap__sub { margin: 1rem auto 0; max-width: 34ch; color: var(--ink); opacity: 0.85; font-size: clamp(0.9rem, 1.4vw, 1.05rem); }
.cap__index { display: block; font-size: 0.75rem; letter-spacing: 0.3em; text-transform: uppercase; color: var(--accent); margin-bottom: 1rem; }
.cap__title { font-family: var(--font-display); font-size: clamp(2.6rem, 6.5vw, 5.5rem); line-height: 0.95; text-transform: uppercase; }
.cap__title--big { font-size: clamp(3rem, 9vw, 8rem); }
.cap__body { margin-top: 1rem; max-width: 32ch; color: var(--ink); opacity: 0.82; font-size: clamp(0.95rem, 1.4vw, 1.15rem); }
.cap__price { margin: 1.1rem 0 2rem; color: var(--muted); letter-spacing: 0.08em; }
.cap__price strong { color: var(--ink); font-weight: 600; font-size: 1.25em; }
.cap__cta { display: inline-block; font-size: 0.85rem; letter-spacing: 0.16em; text-transform: uppercase; background: var(--accent); color: #160800; font-weight: 600; padding: 1.1rem 2.6rem; border-radius: 999px; transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease); box-shadow: 0 10px 40px -10px rgba(226,102,44,0.6); }
.cap__cta:hover { transform: translateY(-3px); box-shadow: 0 18px 50px -10px rgba(226,102,44,0.85); }

.film__hint { position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%); z-index: 5; display: flex; flex-direction: column; align-items: center; gap: 0.6rem; font-size: 0.7rem; letter-spacing: 0.3em; text-transform: uppercase; color: var(--muted); transition: opacity 0.5s; }
.film__hint i { width: 1px; height: 38px; background: linear-gradient(var(--accent), transparent); animation: scrollPulse 1.8s var(--ease) infinite; }
@keyframes scrollPulse { 0% { transform: scaleY(0); transform-origin: top; } 45% { transform: scaleY(1); transform-origin: top; } 55% { transform: scaleY(1); transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* ============ STATS ============ */
.stats { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: clamp(5rem, 12vh, 10rem) clamp(1.4rem, 6vw, 6rem); text-align: center; }
.stats__eyebrow { font-size: 0.78rem; letter-spacing: 0.35em; text-transform: uppercase; color: var(--accent); margin-bottom: 3rem; }
.stats__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(1.5rem, 4vw, 4rem); max-width: 1200px; margin: 0 auto; }
.stat { text-align: center; border-left: 1px solid var(--line); padding: 0.5rem 1rem; }
.stat:first-child { border-left: none; }
.stat__num { display: block; font-family: var(--font-display); font-size: clamp(2.6rem, 7vw, 5rem); line-height: 1; }
.stat__label { display: block; margin-top: 0.8rem; font-size: 0.78rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); }

/* ============ CALL TO ACTION ============ */
.cta { position: relative; min-height: 100svh; display: grid; place-items: center; overflow: hidden; text-align: center; }
.cta__media { position: absolute; inset: 0; }
.cta__media img { width: 100%; height: 100%; object-fit: cover; }
.cta__veil { position: absolute; inset: 0; background: radial-gradient(110% 100% at 50% 55%, rgba(19,22,26,0.45) 0%, rgba(19,22,26,0.86) 70%), linear-gradient(to bottom, rgba(19,22,26,0.7), rgba(19,22,26,0.4) 40%, rgba(19,22,26,0.92)); }
.cta__inner { position: relative; z-index: 2; padding: 6rem clamp(1.4rem, 6vw, 4rem); max-width: 48rem; }
.cta__eyebrow { font-size: 0.8rem; letter-spacing: 0.4em; text-transform: uppercase; color: var(--accent-soft); margin-bottom: 1.2rem; }
.cta__title { font-family: var(--font-display); font-weight: 900; letter-spacing: -0.02em; font-size: clamp(2.6rem, 8vw, 6.5rem); line-height: 0.95; text-transform: uppercase; }
.cta__price { margin: 1.8rem 0; display: flex; align-items: baseline; justify-content: center; gap: 0.6rem; color: var(--muted); }
.cta__price span { font-size: 1rem; letter-spacing: 0.1em; text-transform: uppercase; }
.cta__price strong { font-family: var(--font-display); font-weight: 900; color: var(--ink); font-size: clamp(3rem, 9vw, 6rem); line-height: 1; letter-spacing: -0.02em; }
.cta__btn { display: inline-block; font-size: 1rem; letter-spacing: 0.12em; text-transform: uppercase; background: var(--accent); color: #160800; font-weight: 700; padding: 1.3rem 3rem; border-radius: 999px; transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease); box-shadow: 0 14px 50px -12px rgba(226,102,44,0.7); }
.cta__btn:hover { transform: translateY(-3px); box-shadow: 0 22px 60px -12px rgba(226,102,44,0.9); }
.cta__meta { margin-top: 1.6rem; font-size: 0.82rem; letter-spacing: 0.06em; color: var(--muted); }

/* ============ FOOTER ============ */
.footer { background: var(--bg); padding: clamp(3rem, 8vw, 6rem) clamp(1.4rem, 6vw, 6rem) 2.5rem; }
.footer__top { overflow: hidden; border-bottom: 1px solid var(--line); padding-bottom: 1rem; }
.footer__big { font-family: var(--font-display); font-size: clamp(4rem, 22vw, 20rem); line-height: 0.8; color: var(--bg-soft); -webkit-text-stroke: 1px var(--line); display: block; }
.footer__bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem; margin-top: 1.6rem; font-size: 0.8rem; color: var(--muted); }
.footer__bottom a { color: var(--accent); }

/* ============ RESPONSIVE ============ */
@media (max-width: 760px) {
  .nav__links { display: none; }
  .stats__grid { grid-template-columns: repeat(2, 1fr); gap: 2.5rem 1rem; }
  .stat:nth-child(odd) { border-left: none; }
  .cap--left { left: 1.2rem; right: 1.2rem; max-width: none; text-align: center; top: auto; bottom: 12vh; transform: none; }
  .cap--left .cap__body { margin-left: auto; margin-right: auto; }
  .cap--hero { bottom: 15vh; }
  .cap--hero .cap__hero { font-size: clamp(2.6rem, 16vw, 5rem); }
  .cap--hero .cap__sub { font-size: 0.85rem; }
}

/* ============ REDUCED MOTION ============ */
@media (prefers-reduced-motion: reduce) { .film__hint i { animation: none; } * { scroll-behavior: auto !important; } }