/* ============================================================
   KINETIQ SPINE & MOTION — "Voltage on Carbon"
   Shared stylesheet. Built to move.
   ============================================================ */

/* ---- Fonts ---- */
/* Clash Display + General Sans via Fontshare, JetBrains Mono via Google */
@import url('https://api.fontshare.com/v2/css?f[]=clash-display@400,500,600,700&f[]=general-sans@400,500,600,700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&display=swap');

/* ---- Tokens ---- */
:root {
  --carbon: #0D0F12;
  --carbon-2: #111419;
  --graphite: #1A1E24;
  --graphite-2: #21262E;
  --bone: #EDEAE3;
  --bone-dim: rgba(237, 234, 227, 0.62);
  --bone-faint: rgba(237, 234, 227, 0.34);
  --hairline: rgba(237, 234, 227, 0.10);
  --hairline-strong: rgba(237, 234, 227, 0.18);
  --volt: #C8F542;
  --pulse: #2BD9C7;
  --signal: #FF6B35;
  --grad: linear-gradient(100deg, #C8F542 0%, #2BD9C7 100%);
  --grad-rev: linear-gradient(100deg, #2BD9C7 0%, #C8F542 100%);

  --ff-display: 'Clash Display', sans-serif;
  --ff-body: 'General Sans', sans-serif;
  --ff-mono: 'JetBrains Mono', monospace;

  --ease-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-io: cubic-bezier(0.65, 0, 0.35, 1);

  --maxw: 1500px;
  --gut: clamp(20px, 5vw, 80px);
  --nav-h: 84px;

  /* fluid type scale */
  --fs-mono: clamp(11px, 0.78vw, 13px);
  --fs-body: clamp(16px, 1.12vw, 17px);
  --fs-lead: clamp(19px, 1.6vw, 24px);
  --fs-h4: clamp(20px, 1.7vw, 26px);
  --fs-h3: clamp(28px, 3.4vw, 48px);
  --fs-h2: clamp(40px, 6vw, 96px);
  --fs-h1: clamp(56px, 11vw, 200px);
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; overflow-x: clip; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--carbon);
  color: var(--bone);
  font-family: var(--ff-body);
  font-size: var(--fs-body);
  line-height: 1.65;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
h1, h2, h3, h4 { margin: 0; font-family: var(--ff-display); font-weight: 600; line-height: 0.92; }
p { margin: 0; text-wrap: pretty; }
::selection { background: var(--volt); color: var(--carbon); }

/* ---- Utility ---- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding-inline: var(--gut); }
.mono { font-family: var(--ff-mono); font-size: var(--fs-mono); letter-spacing: 0.06em; text-transform: uppercase; }
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.eyebrow {
  font-family: var(--ff-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--bone-dim);
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.eyebrow::before {
  content: ""; width: 28px; height: 2px; background: var(--grad); display: inline-block;
}
.h1 { font-size: var(--fs-h1); letter-spacing: -0.01em; text-transform: uppercase; }
.h2 { font-size: var(--fs-h2); letter-spacing: -0.005em; text-transform: uppercase; }
.h3 { font-size: var(--fs-h3); letter-spacing: -0.005em; }
.h4 { font-size: var(--fs-h4); }
.lead { font-size: var(--fs-lead); line-height: 1.5; color: var(--bone-dim); }
.section { padding-block: clamp(80px, 12vh, 180px); position: relative; }

/* ---- Grain overlay ---- */
.grain {
  position: fixed; inset: 0; z-index: 9000; pointer-events: none;
  opacity: 0.038; mix-blend-mode: screen;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 8000;
  height: var(--nav-h);
  display: flex; align-items: center;
  transition: height 0.4s var(--ease-expo), background 0.4s var(--ease-expo), border-color 0.4s var(--ease-expo);
  border-bottom: 1px solid transparent;
}
.nav.compressed {
  height: 64px;
  background: rgba(13, 15, 18, 0.72);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  border-bottom: 1px solid var(--hairline);
}
.nav__inner { width: 100%; max-width: var(--maxw); margin: 0 auto; padding-inline: var(--gut);
  display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; }
.brand svg { height: 26px; width: auto; display: block; }
.nav__links { display: flex; align-items: center; gap: clamp(18px, 2vw, 34px); }
.nav__link {
  position: relative; font-family: var(--ff-mono); font-size: 12px;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--bone-dim);
  padding: 6px 0; transition: color 0.25s var(--ease-io);
}
.nav__link::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: -2px; height: 2px;
  background: var(--grad); transition: right 0.32s var(--ease-expo);
}
.nav__link:hover { color: var(--bone); }
.nav__link:hover::after, .nav__link[aria-current="page"]::after { right: 0; }
.nav__link[aria-current="page"] { color: var(--bone); }
.nav__cta { display: inline-flex; }
.nav__burger { display: none; }

/* mobile nav */
.mobile-menu {
  position: fixed; inset: 0; z-index: 8500; background: var(--carbon);
  display: flex; flex-direction: column; justify-content: center; padding: var(--gut);
  gap: clamp(2px, 1vh, 10px); overflow-y: auto;
  transform: translateY(-100%); visibility: hidden;
  transition: transform 0.5s var(--ease-expo), visibility 0s linear 0.5s;
}
.mobile-menu.open { transform: translateY(0); visibility: visible; transition: transform 0.5s var(--ease-expo), visibility 0s; }
.mobile-menu a { font-family: var(--ff-display); text-transform: uppercase; font-size: clamp(40px, 11vw, 72px);
  line-height: 1.05; color: var(--bone); padding: 6px 0; }
.mobile-menu a .idx { font-family: var(--ff-mono); font-size: 13px; color: var(--bone-faint); vertical-align: super; margin-right: 14px; }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  position: relative; display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--ff-mono); font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase;
  font-weight: 500; padding: 16px 28px; border-radius: 100px;
  will-change: transform; transition: transform 0.2s var(--ease-io);
}
.btn--grad { background: var(--grad); color: var(--carbon); }
.btn--grad::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; background: var(--grad-rev);
  opacity: 0; transition: opacity 0.3s var(--ease-io);
}
.btn--grad span, .btn--grad svg { position: relative; z-index: 1; }
.btn--grad:hover::after { opacity: 1; }
.btn--ghost { border: 1px solid var(--hairline-strong); color: var(--bone); }
.btn--ghost:hover { border-color: var(--volt); color: var(--volt); }
.btn svg { width: 18px; height: 18px; stroke-width: 1.8; }
.btn-arrow { transition: transform 0.3s var(--ease-expo); }
.btn:hover .btn-arrow { transform: translateX(4px); }

/* magnetic wrapper */
.magnetic { display: inline-block; will-change: transform; }

/* ============================================================
   PAGE TRANSITION (Q-tail streak wipe)
   ============================================================ */
.page-wipe {
  position: fixed; inset: 0; z-index: 9500; pointer-events: none;
  background: var(--grad); transform: scaleX(0); transform-origin: left center;
}
.page-wipe.intro { transform-origin: right center; animation: wipeIn 0.7s cubic-bezier(0.16,1,0.3,1) 0.05s both; }
@keyframes wipeIn { from { transform: scaleX(1); } to { transform: scaleX(0); } }
@media (prefers-reduced-motion: reduce) { .page-wipe.intro { animation: none; } }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { position: relative; padding-top: clamp(70px, 10vh, 130px); border-top: 1px solid var(--hairline); overflow: hidden; }
.footer__top { display: flex; flex-wrap: wrap; gap: 48px 64px; justify-content: space-between; padding-bottom: 70px; }
.footer__cta h3 { font-size: clamp(30px, 4vw, 60px); text-transform: uppercase; max-width: 12ch; }
.footer__cols { display: flex; gap: clamp(40px, 6vw, 96px); flex-wrap: wrap; }
.footer__col h5 { font-family: var(--ff-mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--bone-faint); margin: 0 0 18px; font-weight: 500; }
.footer__col a { display: block; font-family: var(--ff-mono); font-size: 13px; color: var(--bone-dim);
  padding: 5px 0; transition: color 0.2s, transform 0.2s var(--ease-io); }
.footer__col a:hover { color: var(--volt); transform: translateX(3px); }
.footer__wordmark { line-height: 0.8; position: relative; margin-top: 10px; }
.footer__big {
  position: relative; font-family: var(--ff-display); font-weight: 600; text-transform: uppercase;
  font-size: 22vw; line-height: 0.78; letter-spacing: -0.02em; margin: 0;
  color: transparent; -webkit-text-stroke: 1.5px var(--hairline-strong);
}
.footer__big::before {
  content: "KINETIQ"; position: absolute; inset: 0;
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; -webkit-text-stroke: 0;
  clip-path: inset(0 var(--fill, 100%) 0 0); transition: clip-path 0.1s linear;
}
@media (prefers-reduced-motion: reduce) { .footer__big::before { --fill: 0%; } }
.footer__legal { display: flex; flex-wrap: wrap; gap: 12px 28px; justify-content: space-between;
  padding: 28px 0; border-top: 1px solid var(--hairline); }
.footer__legal span, .footer__legal a { font-family: var(--ff-mono); font-size: 11px; letter-spacing: 0.06em;
  color: var(--bone-faint); text-transform: uppercase; }

/* ============================================================
   TICKER / MARQUEE
   ============================================================ */
.ticker { overflow: hidden; white-space: nowrap; border-block: 1px solid var(--hairline); }
.ticker__track { display: inline-flex; will-change: transform; }
.ticker__track > span { display: inline-flex; align-items: center; padding: 14px 0;
  font-family: var(--ff-mono); font-size: 13px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--bone-dim); }
.ticker__track .dot { color: var(--volt); padding-inline: 28px; }
.ticker__track .up { color: var(--pulse); }

/* ============================================================
   CARDS / SHARED COMPONENTS
   ============================================================ */
.card { background: var(--graphite); border: 1px solid var(--hairline); border-radius: 4px; }
.tag {
  display: inline-flex; align-items: center; gap: 6px; font-family: var(--ff-mono);
  font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--bone-dim);
  padding: 6px 12px; border: 1px solid var(--hairline-strong); border-radius: 100px;
}

/* reveal helpers (JS toggles .is-in) */
[data-reveal] { opacity: 0; transform: translateY(28px); }
[data-reveal].is-in { opacity: 1; transform: none; transition: opacity 0.9s var(--ease-expo), transform 0.9s var(--ease-expo); }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1 !important; transform: none !important; transition: none !important; }
}

/* duotone image sweep */
.duotone { position: relative; overflow: hidden; }
.duotone img { filter: grayscale(1) contrast(1.06) brightness(0.92); transition: filter 0.6s var(--ease-io), transform 0.9s var(--ease-expo); width: 100%; height: 100%; object-fit: cover; }
.duotone::after {
  content: ""; position: absolute; inset: 0; background: var(--grad); mix-blend-mode: color;
  opacity: 0; transition: opacity 0.5s var(--ease-io);
}
.duotone:hover img { transform: scale(1.04); }
.duotone:hover::after { opacity: 0.85; }

/* generic two-col split */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 80px); align-items: center; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 980px) {
  .split { grid-template-columns: 1fr; }
  .nav__links { display: none; }
  .nav__burger { display: inline-flex; align-items: center; gap: 10px; font-family: var(--ff-mono); font-size: 12px;
    letter-spacing: 0.12em; text-transform: uppercase; color: var(--bone); }
  .nav__burger svg { width: 22px; height: 22px; }
}
@media (max-width: 600px) {
  :root { --nav-h: 70px; }
  .btn { padding: 14px 22px; font-size: 12px; }
}