/* ============================================================
   HYPERWIND — Site shell (base · cursor · nav · footer · sections)
   ============================================================ */

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--paper);
  font-family: var(--display); font-weight: 400;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
body.hw-cursor-on { cursor: none; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--accent); color: var(--accent-ink); }
img { display: block; max-width: 100%; }

/* page-wide grain + wind field behind everything */
.site-field { position: fixed; inset: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; opacity: 0.6; }
.site-grain {
  position: fixed; inset: 0; z-index: 1; pointer-events: none; opacity: 0.4; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
}
main, header.nav, footer { position: relative; z-index: 2; }

/* ---- custom scrollbar (OverlayScrollbars · modern amber) ---- */
.os-theme-hw {
  --os-size: 12px;
  --os-padding-perpendicular: 3px;
  --os-padding-axis: 7px;
  --os-track-border-radius: 10px;
  --os-track-bg: transparent;
  --os-track-bg-hover: color-mix(in oklab, var(--paper) 5%, transparent);
  --os-track-bg-active: color-mix(in oklab, var(--paper) 7%, transparent);
  --os-handle-border-radius: 10px;
  --os-handle-bg: color-mix(in oklab, var(--paper-mute) 60%, transparent);
  --os-handle-bg-hover: var(--accent);
  --os-handle-bg-active: var(--accent);
  --os-handle-min-size: 44px;
  --os-handle-interactive-area-offset: 6px;
}
/* slim the bar until interacted with — modern, unobtrusive */
.os-theme-hw.os-scrollbar-vertical { --os-size: 11px; }
.os-theme-hw .os-scrollbar-handle { transition: background .25s var(--ease-out); }

/* ---- custom cursor ---- */
.hw-cursor, .hw-cursor-dot { position: fixed; top: 0; left: 0; z-index: 9999; pointer-events: none; border-radius: 50%; mix-blend-mode: difference; }
.hw-cursor { width: 38px; height: 38px; margin: -19px 0 0 -19px; border: 1px solid #fff; transition: width .3s var(--ease-out), height .3s var(--ease-out), margin .3s var(--ease-out), background .3s; }
.hw-cursor.is-hover { width: 64px; height: 64px; margin: -32px 0 0 -32px; background: rgba(255,255,255,0.15); }
.hw-cursor-dot { width: 5px; height: 5px; margin: -2.5px 0 0 -2.5px; background: #fff; }
@media (pointer: coarse) { .hw-cursor, .hw-cursor-dot { display: none; } body.hw-cursor-on { cursor: auto; } }

/* ---- container / sections ---- */
.wrap { width: 100%; max-width: 1440px; margin: 0 auto; padding-inline: var(--gutter); }
section { position: relative; }
.sec { padding-block: clamp(72px, 8vw, 116px); }
.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; margin-bottom: clamp(40px, 5vw, 76px); flex-wrap: wrap; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; }
.eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--accent); }
.sec-title { font-size: clamp(34px, 5.2vw, 84px); font-weight: 600; letter-spacing: -0.04em; line-height: 0.95; margin: 14px 0 0; max-width: 16ch; text-wrap: balance; }
.lead { font-size: clamp(20px, 2.3vw, 30px); line-height: 1.45; font-weight: 400; letter-spacing: -0.01em; color: var(--paper); max-width: 24ch; }
.muted { color: var(--paper-dim); }

/* ---- nav (floating capsule) ---- */
header.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; padding: 16px var(--gutter); pointer-events: none; will-change: transform; transition: transform var(--dur) var(--ease-out); }
header.nav.nav-hidden { transform: translateY(-150%); }
.nav-inner {
  pointer-events: auto;
  max-width: calc(1440px - 2 * var(--gutter)); margin-inline: auto;
  display: flex; align-items: center; justify-content: space-between; gap: clamp(14px, 3vw, 40px);
  padding: 10px 12px 10px 22px;
  border-radius: 18px;
  background: color-mix(in oklab, var(--panel) 70%, transparent);
  border: 1px solid var(--line-soft);
  backdrop-filter: blur(16px) saturate(1.3);
  -webkit-backdrop-filter: blur(16px) saturate(1.3);
  box-shadow: 0 12px 40px -16px rgba(0,0,0,0.6), inset 0 1px 0 rgba(255,255,255,0.04);
  transition: background .4s, border-color .4s, box-shadow .4s;
}
header.nav.scrolled .nav-inner { background: color-mix(in oklab, var(--panel) 88%, transparent); border-color: var(--line); box-shadow: 0 16px 50px -14px rgba(0,0,0,0.75), inset 0 1px 0 rgba(255,255,255,0.05); }
.logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; letter-spacing: -0.04em; }
.logo .mark { width: 13px; height: 13px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 16px var(--accent); animation: pulse 3.4s var(--ease-io) infinite; }
@keyframes pulse { 0%,100%{ transform: scale(1); opacity: 1 } 50%{ transform: scale(0.7); opacity: .65 } }
.logo sup { font-family: var(--mono); font-size: 10px; color: var(--paper-mute); font-weight: 400; }
.nav-links { display: flex; gap: clamp(18px, 2vw, 30px); align-items: center; margin-right: auto; margin-left: clamp(20px, 4vw, 52px); }
.nav-links a { font-size: 15px; font-weight: 500; color: var(--paper-dim); position: relative; padding: 4px 0; transition: color .25s; }
.nav-links a::after { content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 1px; background: var(--accent); transition: width .35s var(--ease-out); }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--paper); }
.nav-links a:hover::after, .nav-links a[aria-current="page"]::after { width: 100%; }
.nav-right { display: flex; align-items: center; gap: 10px; }
/* compact pill button to suit the floating bar */
.nav .btn-pill { padding: 12px 22px; font-size: 15px; }

/* ---- hamburger (mobile only) ---- */
.nav-toggle { display: none; align-items: center; justify-content: center; width: 46px; height: 46px; padding: 0; border-radius: 50%; border: 1px solid var(--line); background: transparent; cursor: pointer; position: relative; transition: border-color .35s, background .35s; }
.nav-toggle:hover { border-color: var(--paper); background: rgba(255,255,255,0.04); }
.nav-toggle[aria-expanded="true"] { border-color: var(--accent); }
.nav-toggle .bar { position: absolute; left: 50%; top: 50%; width: 18px; height: 1.5px; background: var(--paper); border-radius: 2px; transition: transform .4s var(--ease-io), opacity .25s, background .35s; }
.nav-toggle .bar:nth-child(1) { transform: translate(-50%, -5.5px); }
.nav-toggle .bar:nth-child(2) { transform: translate(-50%, 0); }
.nav-toggle .bar:nth-child(3) { transform: translate(-50%, 5.5px); }
.nav-toggle[aria-expanded="true"] .bar { background: var(--accent); }
.nav-toggle[aria-expanded="true"] .bar:nth-child(1) { transform: translate(-50%, 0) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .bar:nth-child(3) { transform: translate(-50%, 0) rotate(-45deg); }

/* ---- buttons ---- */
.btn { display: inline-flex; align-items: center; gap: 12px; font-family: var(--display); cursor: pointer; border: none; will-change: transform; text-decoration: none; }
.btn-pill { padding: 16px 26px; border-radius: 100px; background: var(--accent); color: var(--accent-ink); font-weight: 600; font-size: 16px; letter-spacing: -0.01em; transition: filter .3s; }
.btn-pill:hover { filter: brightness(1.08); }
.btn-pill .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent-ink); }
.btn-ghost { padding: 15px 25px; border-radius: 100px; border: 1px solid var(--line); color: var(--paper); font-weight: 500; font-size: 15px; background: transparent; transition: border-color .3s, background .3s; }
.btn-ghost:hover { border-color: var(--paper); background: rgba(255,255,255,0.04); }
.link-arrow { display: inline-flex; align-items: center; gap: 10px; font-weight: 500; font-size: 16px; }
.link-arrow .arr { transition: transform .35s var(--ease-out); }
.link-arrow:hover .arr { transform: translateX(6px); }

/* ---- reveal ---- */
[data-reveal] { opacity: 1; }
@media (prefers-reduced-motion: no-preference) {
  .js [data-reveal].reveal-hidden { opacity: 0; transform: translateY(34px); transition: opacity .9s var(--ease-out) var(--rd, 0s), transform .9s var(--ease-out) var(--rd, 0s); }
  .js [data-reveal].reveal-hidden[data-reveal="fade"] { transform: none; }
  .js [data-reveal].reveal-hidden.is-in { opacity: 1; transform: none; }
}

/* ---- char reveal (titles) ---- */
.split .hw-line { display: block; overflow: hidden; padding-bottom: 0.05em; }
.split .hw-char { display: inline-block; }
@media (prefers-reduced-motion: no-preference) {
  .js .split.play .hw-char { transform: translateY(110%); opacity: 0; animation: charUp .95s var(--ease-out) forwards; animation-delay: calc(var(--ci) * 0.02s + var(--base, 0s)); }
}
@keyframes charUp { to { transform: translateY(0); opacity: 1; } }

/* ---- marquee ---- */
.marquee { overflow: hidden; white-space: nowrap; -webkit-mask-image: linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent); mask-image: linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent); }
.marquee-track { display: inline-flex; will-change: transform; animation: marq var(--marq-dur, 30s) linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track .it { display: inline-flex; align-items: center; }
@keyframes marq { to { transform: translateX(-50%); } }

/* ---- hero (home) ---- */
.hero-home { position: relative; min-height: 100svh; display: grid; grid-template-rows: 1fr auto; padding-top: 88px; overflow: hidden; }
.hero-home .site-field { position: absolute; }
.hero-stage { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; gap: 28px; padding: 40px var(--gutter); }
.hero-word { font-weight: 700; letter-spacing: -0.055em; line-height: 0.82; font-size: clamp(64px, 15vw, 280px); margin: 0; }
.hero-sub { max-width: 600px; font-size: clamp(18px, 2vw, 23px); line-height: 1.45; color: var(--paper-dim); margin: 0; }
.hero-cta { display: flex; gap: 14px; margin-top: 8px; flex-wrap: wrap; justify-content: center; }
.hero-foot { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 0 var(--gutter) 26px; flex-wrap: wrap; }
.hero-scroll { display: inline-flex; align-items: center; gap: 10px; }
.hero-scroll .ln { width: 40px; height: 1px; background: var(--line); position: relative; overflow: hidden; }
.hero-scroll .ln::after { content: ""; position: absolute; inset: 0; background: var(--accent); animation: scrollLn 2.2s var(--ease-io) infinite; }
@keyframes scrollLn { 0%{ transform: translateX(-100%) } 60%,100%{ transform: translateX(100%) } }

/* ---- footer ---- */
footer { border-top: 1px solid var(--line-soft); background: var(--bg-deep); }
.foot-cta { padding-block: clamp(64px, 8vw, 116px); border-bottom: 1px solid var(--line-soft); }
.foot-cta h2 { font-size: clamp(40px, 8.5vw, 150px); font-weight: 600; letter-spacing: -0.05em; line-height: 0.9; margin: 0; }
.foot-cta .accent { color: var(--accent); }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding-block: 64px; }
.foot-col h4 { font-family: var(--mono); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--paper-mute); margin: 0 0 18px; font-weight: 400; }
.foot-col a, .foot-col p { display: block; font-size: 16px; color: var(--paper-dim); margin: 0 0 10px; transition: color .25s; }
.foot-col a:hover { color: var(--paper); }
.foot-mail { font-size: clamp(24px, 3.4vw, 44px); font-weight: 500; letter-spacing: -0.03em; color: var(--paper); }
.foot-bottom { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-block: 26px; border-top: 1px solid var(--line-soft); flex-wrap: wrap; }
.foot-wordmark { font-weight: 700; letter-spacing: -0.05em; font-size: clamp(60px, 16vw, 280px); line-height: 0.8; color: var(--panel); padding-block: 10px 30px; text-align: center; user-select: none; }

/* ---- page header (subpages) ---- */
.page-head { padding-block: clamp(140px, 18vh, 220px) clamp(50px, 7vw, 96px); }
.page-title { font-size: clamp(52px, 12vw, 188px); font-weight: 700; letter-spacing: -0.055em; line-height: 0.84; margin: 18px 0 0; }

/* ---- mobile menu ---- */
.menu-overlay { position: fixed; inset: 0; z-index: 99; background: color-mix(in oklab, var(--bg-deep) 88%, transparent); backdrop-filter: blur(20px); transform: translateY(-100%); transition: transform .6s var(--ease-io); display: flex; flex-direction: column; justify-content: center; padding: calc(var(--gutter) + 60px) var(--gutter) var(--gutter); counter-reset: m; }
.menu-overlay.open { transform: translateY(0); }
.menu-overlay a { display: flex; align-items: baseline; gap: clamp(16px, 4vw, 32px); font-size: clamp(38px, 10vw, 76px); font-weight: 600; letter-spacing: -0.04em; padding: clamp(14px, 2.4vw, 22px) 0; color: var(--paper); border-top: 1px solid var(--line-soft); opacity: 0; transform: translateY(28px); transition: color .3s, opacity .55s var(--ease-out), transform .6s var(--ease-out); }
.menu-overlay a:last-child { border-bottom: 1px solid var(--line-soft); }
.menu-overlay a::before { counter-increment: m; content: "0" counter(m); font-family: var(--mono); font-size: clamp(12px, 1.6vw, 15px); font-weight: 400; color: var(--paper-mute); transform: translateY(-0.4em); transition: color .3s; }
.menu-overlay a:hover { color: var(--accent); }
.menu-overlay a:hover::before { color: var(--accent); }
.menu-overlay.open a { opacity: 1; transform: none; }
.menu-overlay.open a:nth-child(1) { transition-delay: .14s; }
.menu-overlay.open a:nth-child(2) { transition-delay: .20s; }
.menu-overlay.open a:nth-child(3) { transition-delay: .26s; }
.menu-overlay.open a:nth-child(4) { transition-delay: .32s; }

@media (max-width: 920px) {
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 620px) {
  /* full-pill mobile header (logo left · circular menu button right) */
  .nav-inner { border-radius: 999px; padding: 8px 8px 8px 20px; }
  .nav-toggle { background: color-mix(in oklab, var(--paper) 7%, transparent); border-color: var(--line-soft); }
  .nav-toggle:hover { background: color-mix(in oklab, var(--paper) 11%, transparent); }
}
@media (max-width: 560px) {
  .foot-grid { grid-template-columns: 1fr; gap: 28px; padding-block: 48px; }
  .nav-right .btn-pill { display: none; }
  /* tighter section-to-section rhythm on small devices */
  .sec { padding-block: clamp(52px, 12vw, 88px); }
  .sec-head { margin-bottom: clamp(28px, 7vw, 44px); }
  .foot-cta { padding-block: clamp(56px, 14vw, 88px); }
}
@media (max-width: 400px) {
  /* shrink the giant hero wordmark so it fits narrow screens */
  .hero-word { font-size: clamp(38px, 13vw, 56px); letter-spacing: -0.04em; }
  .hero-stage { gap: 20px; }
  .sec { padding-block: 44px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .marquee-track, .logo .mark, .hero-scroll .ln::after { animation: none; }
}