/* ==========================================================================
   AXIOM — cinematic product landing page (mobile-first)
   Palette: near-black, white, graphite/silver accent
   ========================================================================== */

:root {
  --black: #0a0a0a;
  --ink: #141414;
  --white: #ffffff;
  --graphite: #6f7378;
  --silver: #c9ccd1;
  --hairline: rgba(10, 10, 10, 0.12);
  --nav-h: 60px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--white);
  color: var(--ink);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

img { display: block; width: 100%; height: 100%; object-fit: cover; border: 0; }

h1, h2, h3 { font-weight: 500; letter-spacing: -0.02em; line-height: 1.05; }

.eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--graphite);
  margin-bottom: 1rem;
}

/* ---------------------------------- Buttons ------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.6rem;
  border-radius: 999px;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: background-color 0.35s var(--ease), color 0.35s var(--ease),
    border-color 0.35s var(--ease);
}
.btn--solid { background: var(--ink); color: var(--white); }
.btn--solid:hover { background: var(--graphite); }
.btn--ghost { color: inherit; border-color: currentColor; }
.btn--ghost:hover { background: var(--ink); border-color: var(--ink); color: var(--white); }
.btn--light { background: var(--white); color: var(--ink); }
.btn--light:hover { background: var(--silver); }
.btn--outline-light { color: var(--white); border-color: rgba(255, 255, 255, 0.6); }
.btn--outline-light:hover { background: var(--white); color: var(--ink); border-color: var(--white); }

.link {
  display: inline-block;
  margin-top: 1.4rem;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--hairline);
  padding-bottom: 3px;
  transition: border-color 0.3s var(--ease);
}
.link:hover { border-color: var(--ink); }

/* --------------------------------- Navigation ----------------------------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  color: var(--white);
  transition: background-color 0.4s var(--ease), color 0.4s var(--ease),
    box-shadow 0.4s var(--ease);
}
.nav__inner {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0 1.25rem;
  max-width: 1400px;
  margin: 0 auto;
}
.nav__logo {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.32em;
  color: inherit;
  text-decoration: none;
  margin-right: auto;
}

/* Mobile: links collapse into a sheet under the bar */
.nav__links {
  position: absolute;
  top: var(--nav-h);
  left: 0;
  right: 0;
  display: grid;
  gap: 0.25rem;
  padding: 0 1.25rem;
  background: var(--white);
  color: var(--ink);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease), padding 0.4s var(--ease);
  border-bottom: 1px solid var(--hairline);
}
.nav.is-open .nav__links { max-height: 220px; padding: 0.75rem 1.25rem 1.25rem; }
.nav__links a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  padding: 0.5rem 0;
}
.nav__actions { display: none; gap: 0.6rem; }

.nav__burger {
  display: grid;
  gap: 5px;
  width: 34px;
  padding: 8px 4px;
  background: none;
  border: 0;
  cursor: pointer;
}
.nav__burger span { height: 1px; background: currentColor; transition: transform 0.3s var(--ease); }
.nav.is-open .nav__burger span:first-child { transform: translateY(3px) rotate(45deg); }
.nav.is-open .nav__burger span:last-child { transform: translateY(-3px) rotate(-45deg); }

/* Scrolled state: solid white with subtle shadow */
.nav.is-scrolled,
.nav.is-open {
  background: var(--white);
  color: var(--ink);
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.07);
}

/* Scroll progress hairline pinned to the bottom edge of the bar */
.nav__progress {
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  width: 0;
  background: var(--ink);
  opacity: 0;
  transition: opacity 0.3s var(--ease);
}
.nav.is-scrolled .nav__progress,
.nav.is-open .nav__progress { opacity: 1; }

/* ------------------------------------ Hero -------------------------------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: center;
  color: var(--white);
  overflow: hidden;
  background: #000; /* visible when the video recedes on scroll */
}
.hero__bg { position: absolute; inset: 0; will-change: transform; }
.hero__shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.55) 0%, rgba(0, 0, 0, 0.15) 45%, rgba(0, 0, 0, 0.75) 100%);
}
.hero__content { position: relative; padding: 6rem 1.25rem; max-width: 1400px; margin: 0 auto; width: 100%; }
.hero__content .eyebrow { color: var(--silver); }
.hero__title { font-size: clamp(2.4rem, 11vw, 5.5rem); }
.hero__sub {
  margin-top: 1.25rem;
  max-width: 34ch;
  color: rgba(255, 255, 255, 0.82);
  font-size: 1rem;
}
.hero__cta { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; }
.hero__scroll {
  position: absolute;
  bottom: 1.5rem;
  left: 1.25rem;
  font-size: 0.65rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.7);
  animation: float 2.4s var(--ease) infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0); opacity: 0.7; }
  50% { transform: translateY(-6px); opacity: 1; }
}

/* --------------------------------- Features ------------------------------- */
.feature {
  display: grid;
  min-height: 100svh;
  align-content: center;
  gap: 2.5rem;
  padding: 4.5rem 1.25rem;
  max-width: 1400px;
  margin: 0 auto;
}
.feature__media { aspect-ratio: 4 / 3; overflow: hidden; }
.feature__media img { transition: transform 1.2s var(--ease); }
.feature:hover .feature__media img { transform: scale(1.04); }
.feature__body h2 { font-size: clamp(1.9rem, 8vw, 3.4rem); margin-bottom: 1rem; }
.feature__body p { color: var(--graphite); max-width: 42ch; }

/* Reveal animation (class toggled by IntersectionObserver) */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------------------------------- Gallery -------------------------------- */
.gallery { padding: 4.5rem 0; background: var(--black); color: var(--white); }
.gallery__head { padding: 0 1.25rem 2rem; max-width: 1400px; margin: 0 auto; }
.gallery__head h2 { font-size: clamp(1.9rem, 8vw, 3.4rem); }
.gallery__track {
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding: 0 1.25rem 0.5rem;
}
.gallery__track::-webkit-scrollbar { display: none; }
.card { flex: 0 0 78%; scroll-snap-align: center; }
.card > img { aspect-ratio: 4 / 5; }
.card h3 {
  margin-top: 0.9rem;
  font-size: 0.8rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--silver);
  font-weight: 400;
}

/* --------------------------------- Closing CTA ---------------------------- */
.closing {
  position: relative;
  min-height: 80svh;
  display: grid;
  place-items: center;
  text-align: center;
  color: var(--white);
  overflow: hidden;
}
.closing__bg { position: absolute; inset: 0; }
.closing__shade { position: absolute; inset: 0; background: rgba(0, 0, 0, 0.55); }
.closing__content { position: relative; padding: 5rem 1.25rem; }
.closing__content h2 { font-size: clamp(2rem, 9vw, 4rem); margin-bottom: 2rem; }

/* ----------------------------------- Footer ------------------------------- */
.footer { background: var(--white); border-top: 1px solid var(--hairline); }
.footer__cols {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  padding: 3rem 1.25rem;
  max-width: 1400px;
  margin: 0 auto;
}
.footer__cols h4 {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--graphite);
  margin-bottom: 0.9rem;
  font-weight: 500;
}
.footer__cols a {
  display: block;
  color: var(--ink);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0.25rem 0;
  transition: color 0.3s var(--ease);
}
.footer__cols a:hover { color: var(--graphite); }
.footer__base {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem;
  max-width: 1400px;
  margin: 0 auto;
  border-top: 1px solid var(--hairline);
  font-size: 0.75rem;
  color: var(--graphite);
}

/* ================================ Desktop up ============================== */
@media (min-width: 768px) {
  :root { --nav-h: 76px; }

  .nav__inner { padding: 0 2.5rem; gap: 2rem; }
  .nav__logo { margin-right: 0; }
  .nav__burger { display: none; }
  .nav__links {
    position: static;
    display: flex;
    gap: 2rem;
    margin-left: auto;
    background: none;
    color: inherit;
    max-height: none;
    overflow: visible;
    padding: 0;
    border: 0;
  }
  .nav__links a { color: inherit; font-size: 0.85rem; letter-spacing: 0.12em; }
  .nav__actions { display: flex; }

  .hero__content, .feature, .gallery__head { padding-left: 2.5rem; padding-right: 2.5rem; }
  .hero__scroll { left: 2.5rem; }

  .feature {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 4rem;
    padding-top: 6rem;
    padding-bottom: 6rem;
  }
  .feature__media { aspect-ratio: 5 / 4; }
  .feature--reverse .feature__media { order: 2; }

  .gallery__track { padding: 0 2.5rem 1rem; gap: 1.5rem; }
  .card { flex: 0 0 34%; }
  .card h3 { font-size: 0.75rem; }

  .footer__cols { grid-template-columns: repeat(4, 1fr); padding: 4.5rem 2.5rem; }
  .footer__base { padding: 1.5rem 2.5rem; }
}

/* ==========================================================================
   Motion layer — staggered reveals, clip-in media, parallax, marquee
   ========================================================================== */

/* Hero video behaves exactly like the previous background image */
video { display: block; width: 100%; height: 100%; object-fit: cover; }

/* Hero copy animates in on load; other .stagger blocks wait for .visible */
.stagger > * {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.hero__content.stagger > *,
.reveal.visible .stagger > * { opacity: 1; transform: none; }

/* Cascade: each child trails the one before it */
.stagger > *:nth-child(1) { transition-delay: 0.05s; }
.stagger > *:nth-child(2) { transition-delay: 0.15s; }
.stagger > *:nth-child(3) { transition-delay: 0.25s; }
.stagger > *:nth-child(4) { transition-delay: 0.35s; }
.stagger > *:nth-child(5) { transition-delay: 0.45s; }
.stagger > *:nth-child(6) { transition-delay: 0.55s; }

/* Media clip-reveal: image scales down into a wiping frame */
.clip { clip-path: inset(0 0 100% 0); transition: clip-path 1s var(--ease); }
.reveal.visible .clip { clip-path: inset(0 0 0 0); }
.clip > img,
.clip > video { transform: scale(1.12); transition: transform 1.4s var(--ease); }
.reveal.visible .clip > img,
.reveal.visible .clip > video { transform: scale(1); }

/* Parallax offset written by script.js */
.feature__media[data-parallax] > img,
.feature__media[data-parallax] > video {
  will-change: transform;
  transform: translate3d(0, var(--py, 0px), 0) scale(1.06);
}
.reveal.visible .feature__media[data-parallax] > img,
.reveal.visible .feature__media[data-parallax] > video {
  transform: translate3d(0, var(--py, 0px), 0) scale(1.06);
  transition: none;
}

/* Headline word-mask reveal: each word rises out of a clipped line */
.mask { display: block; }
.mask__word {
  display: inline-block;
  overflow: hidden;
  vertical-align: bottom;
  padding-bottom: 0.14em;  /* room for descenders while clipped */
  margin-bottom: -0.14em;
}
.mask__inner {
  display: inline-block;
  transform: translateY(120%);
  transition: transform 0.8s var(--ease);
}
.visible .mask__inner { transform: none; }
.mask__word:nth-child(1) .mask__inner { transition-delay: 0.02s; }
.mask__word:nth-child(2) .mask__inner { transition-delay: 0.07s; }
.mask__word:nth-child(3) .mask__inner { transition-delay: 0.12s; }
.mask__word:nth-child(4) .mask__inner { transition-delay: 0.17s; }
.mask__word:nth-child(5) .mask__inner { transition-delay: 0.22s; }
.mask__word:nth-child(6) .mask__inner { transition-delay: 0.27s; }

/* Hero copy entrance on first paint */
.hero__content.stagger > * { animation: rise 0.9s var(--ease) both; }
.hero__content.stagger > *:nth-child(2) { animation-delay: 0.12s; }
.hero__content.stagger > *:nth-child(3) { animation-delay: 0.24s; }
.hero__content.stagger > *:nth-child(4) { animation-delay: 0.36s; }
@keyframes rise {
  from { opacity: 0; transform: translateY(26px); }
  to { opacity: 1; transform: none; }
}

/* Spec marquee strip under the hero */
.marquee {
  background: var(--black);
  color: var(--silver);
  overflow: hidden;
  padding: 0.9rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.marquee__track {
  display: flex;
  gap: 1.5rem;
  width: max-content;
  animation: slide 26s linear infinite;
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  white-space: nowrap;
}
@keyframes slide {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* Gallery cards cascade, and lift slightly on hover */
.card { transition: transform 0.5s var(--ease); }
.card > img { transition: transform 0.8s var(--ease); }
.card:hover > img { transform: scale(1.05); }

/* Buttons pick up a soft press/lift */
.btn { transform: translateY(0); transition: background-color 0.35s var(--ease),
    color 0.35s var(--ease), border-color 0.35s var(--ease), transform 0.25s var(--ease); }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

/* Nav shrinks a touch once the page is scrolled */
.nav.is-scrolled .nav__inner { height: calc(var(--nav-h) - 8px); }

@media (prefers-reduced-motion: reduce) {
  .stagger > *,
  .clip,
  .clip > img,
  .clip > video,
  .mask__inner,
  .mask__word { opacity: 1 !important; transform: none !important; clip-path: none !important;
    animation: none !important; transition: none !important; }
  .marquee__track { animation: none; }
}