/* Skyzer Research — site styles
   Palette: Void / Graphite / Line / Shell / Steel / Copper
   Type: Geist (sans), Geist Mono (technical labels) — SIL OFL, self-hosted */

@font-face { font-family: "Geist"; src: url("../fonts/Geist-Variable.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "Geist Mono"; src: url("../fonts/GeistMono-Variable.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }

:root {
  --void: #0B0C0E;
  --graphite: #131518;
  --graphite-2: #1A1D21;
  --line: #262A30;
  --shell: #ECE6DA;
  --shell-dim: #B9B4AA;
  --steel: #8A8F98;
  --copper: #C9874D;
  --copper-hi: #E2A86F;
  --copper-dk: #A86A35;

  --sans: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Geist Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --gutter: clamp(16px, 4vw, 48px);
  --max: 1240px;
  --nav-h: 68px;
  --ease: cubic-bezier(.2,.7,.1,1);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--void); color: var(--shell);
  font-family: var(--sans); font-size: 17px; line-height: 1.6;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--copper); color: var(--void); }
:focus-visible { outline: 2px solid var(--copper); outline-offset: 3px; border-radius: 2px; }

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.mono { font-family: var(--mono); }
.eyebrow {
  font-family: var(--mono); font-size: 12px; letter-spacing: .18em; text-transform: uppercase;
  color: var(--copper); display: inline-flex; align-items: center; gap: 10px;
}
.eyebrow::before { content: ""; width: 18px; height: 1px; background: currentColor; }
.skip { position: absolute; left: -9999px; top: 8px; background: var(--copper); color: var(--void); padding: 8px 12px; z-index: 100; }
.skip:focus { left: 8px; }

/* ---------- Nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; height: var(--nav-h); z-index: 50;
  display: flex; align-items: center;
  transition: background .4s var(--ease), border-color .4s var(--ease), backdrop-filter .4s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled { background: rgba(11,12,14,.72); backdrop-filter: blur(14px) saturate(140%); -webkit-backdrop-filter: blur(14px) saturate(140%); border-bottom-color: var(--line); }
.nav .wrap { display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; }
.brand img { height: 24px; width: auto; }
.nav ul { list-style: none; display: flex; gap: 34px; margin: 0; padding: 0; align-items: center; }
.nav a.link { font-size: 14px; color: var(--shell-dim); transition: color .2s; }
.nav a.link:hover, .nav a.link[aria-current="page"] { color: var(--shell); }
.btn {
  display: inline-flex; align-items: center; gap: 10px; font-size: 14px; font-weight: 500;
  padding: 11px 18px; border-radius: 999px; border: 1px solid var(--copper); color: var(--shell);
  transition: background .25s, color .25s, transform .25s var(--ease);
}
.btn:hover { background: var(--copper); color: var(--void); }
.btn.solid { background: var(--copper); color: var(--void); }
.btn.solid:hover { background: var(--copper-hi); border-color: var(--copper-hi); }
.btn .arr { transition: transform .25s var(--ease); }
.btn:hover .arr { transform: translateX(3px); }
.menu-toggle { display: none; background: none; border: 0; color: var(--shell); padding: 8px; cursor: pointer; }

@media (max-width: 760px) {
  .brand img { height: 20px; }
  .menu-toggle { display: block; }
  .nav ul {
    position: fixed; inset: var(--nav-h) 0 auto 0; flex-direction: column; align-items: flex-start; gap: 0;
    background: rgba(11,12,14,.97); border-bottom: 1px solid var(--line); padding: 8px var(--gutter) 22px;
    transform: translateY(-8px); opacity: 0; pointer-events: none; transition: opacity .25s, transform .25s var(--ease);
  }
  .nav.open ul { opacity: 1; transform: none; pointer-events: auto; }
  .nav.open { background: rgba(11,12,14,.97); }
  .nav ul li { width: 100%; }
  .nav a.link { display: block; padding: 14px 0; font-size: 17px; border-bottom: 1px solid var(--line); }
  .nav .btn { margin-top: 18px; }
}

/* ---------- Hero ---------- */
.hero { position: relative; height: 100svh; min-height: 620px; overflow: hidden; display: flex; align-items: flex-end; }
.hero canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero::after { /* vignette + floor fade */
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(120% 80% at 50% 40%, transparent 40%, rgba(11,12,14,.75) 100%),
              linear-gradient(to bottom, transparent 55%, var(--void) 100%);
}
.hero .wrap { position: relative; z-index: 2; padding-bottom: clamp(56px, 11vh, 120px); }
.hero h1 {
  font-size: clamp(42px, 7.4vw, 104px); line-height: .98; letter-spacing: -.035em; font-weight: 500;
  margin: 18px 0 0; max-width: 11ch;
}
.hero h1 em { font-style: normal; color: var(--copper); }
.hero .lede { max-width: 46ch; color: var(--shell-dim); font-size: clamp(16px, 1.5vw, 19px); margin: 24px 0 34px; }
.hero .actions { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.hero .readout {
  position: absolute; right: var(--gutter); bottom: clamp(56px, 11vh, 120px); z-index: 2;
  font-family: var(--mono); font-size: 11px; letter-spacing: .14em; color: var(--steel); text-align: right; line-height: 2;
}
.hero .readout b { color: var(--copper); font-weight: 400; }
@media (max-width: 900px) { .hero .readout { display: none; } }
.scroll-cue { position: absolute; left: 50%; bottom: 22px; z-index: 2; width: 1px; height: 38px; background: linear-gradient(var(--copper), transparent); animation: cue 2.4s var(--ease) infinite; }
@keyframes cue { 0% { transform: scaleY(0); transform-origin: top; } 50% { transform: scaleY(1); transform-origin: top; } 51% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* ---------- Sections ---------- */
section { position: relative; }
.anchor { scroll-margin-top: calc(var(--nav-h) + 48px); }
.pad { padding: clamp(96px, 16vh, 180px) 0; }
.h2 { font-size: clamp(32px, 4.6vw, 64px); line-height: 1.04; letter-spacing: -.03em; font-weight: 500; margin: 18px 0 0; }
.muted { color: var(--steel); }

/* Statement: words light up with scroll */
.statement { min-height: 160vh; }
.statement .sticky { position: sticky; top: 0; height: 100vh; display: flex; align-items: center; }
.statement p {
  font-size: clamp(30px, 4.8vw, 68px); line-height: 1.12; letter-spacing: -.03em; font-weight: 500; margin: 22px 0 0; max-width: 20ch;
}
.statement .w { color: var(--shell); opacity: .14; transition: opacity .2s linear, color .2s; }
.statement .w.on { opacity: 1; }
.statement .w.hl.on { color: var(--copper); }

/* Capabilities: one framed visual per domain, on the right, scrolling past */
.caps .head { margin-bottom: clamp(40px, 8vh, 80px); }
.caps .grid { display: block; }
.caps .stage { display: none; }
.cap {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); column-gap: clamp(32px, 6vw, 96px);
  grid-template-rows: 1fr auto auto auto auto 1fr; padding: clamp(36px, 7vh, 72px) 0;
}
.cap > .cap-visual { grid-column: 2; grid-row: 1 / -1; display: block; height: min(62vh, 460px); }
.cap > .idx { grid-column: 1; grid-row: 2; }
.cap > h3 { grid-column: 1; grid-row: 3; }
.cap > p { grid-column: 1; grid-row: 4; }
.cap > ul { grid-column: 1; grid-row: 5; }
.cap-visual .frame canvas { opacity: 1; }
.cap .idx { font-family: var(--mono); font-size: 12px; color: var(--copper); letter-spacing: .16em; }
.cap h3 { font-size: clamp(28px, 3.2vw, 44px); letter-spacing: -.025em; line-height: 1.08; font-weight: 500; margin: 14px 0 16px; }
.cap p { color: var(--shell-dim); max-width: 42ch; margin: 0; }
.cap ul { list-style: none; padding: 0; margin: 22px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.cap li { font-family: var(--mono); font-size: 11.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--steel); border: 1px solid var(--line); border-radius: 999px; padding: 6px 11px; }
.caps .stage { position: sticky; top: calc(var(--nav-h) + 6vh); height: min(72vh, 640px); align-self: start; }
.frame { position: relative; width: 100%; height: 100%; background: var(--graphite); border-radius: 4px; overflow: hidden; }
.frame canvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; transition: opacity .7s var(--ease); }
.frame canvas.show { opacity: 1; }
.frame .tag { position: absolute; left: 18px; top: 16px; font-family: var(--mono); font-size: 11px; letter-spacing: .16em; color: var(--steel); z-index: 2; }
.frame .tag b { color: var(--copper); font-weight: 400; }

/* HUD bracket motif */
.brackets { position: relative; }
.brackets::before, .brackets::after, .brackets > .bk::before, .brackets > .bk::after {
  content: ""; position: absolute; width: 22px; height: 22px; border: 0 solid var(--copper); z-index: 3; pointer-events: none;
  transition: transform .5s var(--ease);
}
.brackets::before { left: -1px; top: -1px; border-left-width: 2px; border-top-width: 2px; }
.brackets::after { right: -1px; top: -1px; border-right-width: 2px; border-top-width: 2px; }
.brackets > .bk::before { left: -1px; bottom: -1px; border-left-width: 2px; border-bottom-width: 2px; }
.brackets > .bk::after { right: -1px; bottom: -1px; border-right-width: 2px; border-bottom-width: 2px; }
.brackets > .bk { position: absolute; inset: 0; pointer-events: none; z-index: 3; }

@media (max-width: 900px) {
  .cap { display: block; padding: 0 0 72px; }
  .cap > .cap-visual { height: 240px; margin-bottom: 26px; }
}

/* Principles */
.principles .grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); margin-top: clamp(40px, 7vh, 72px); }
.principle { padding: 34px 32px 10px 0; border-right: 1px solid var(--line); }
.principle + .principle { padding-left: 32px; }
.principle:last-child { border-right: 0; }
.principle .n { font-family: var(--mono); font-size: 12px; color: var(--copper); letter-spacing: .16em; }
.principle h3 { font-size: 22px; font-weight: 500; letter-spacing: -.015em; margin: 18px 0 10px; }
.principle p { color: var(--steel); margin: 0; font-size: 16px; }
@media (max-width: 860px) {
  .principles .grid { grid-template-columns: 1fr; }
  .principle, .principle + .principle { padding: 28px 0; border-right: 0; border-bottom: 1px solid var(--line); }
}

/* Group band */
.group { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--graphite); }
.group .wrap { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: center; padding-top: 72px; padding-bottom: 72px; }
.group h2 { font-size: clamp(26px, 3vw, 38px); letter-spacing: -.02em; font-weight: 500; line-height: 1.15; margin: 16px 0 0; }
.facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
.fact { padding: 6px 22px; border-left: 1px solid var(--line); }
.fact .v { white-space: nowrap; font-size: clamp(24px, 2.6vw, 34px); letter-spacing: -.02em; font-weight: 500; }
.fact .k { font-family: var(--mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--steel); margin-top: 6px; }
@media (max-width: 860px) { .group .wrap { grid-template-columns: 1fr; } .fact { padding: 6px 14px; } }

/* CTA */
.cta { text-align: center; }
.cta .h2 { margin-left: auto; margin-right: auto; max-width: 16ch; }
.cta p { color: var(--steel); max-width: 44ch; margin: 22px auto 34px; }

/* Footer */
.foot { border-top: 1px solid var(--line); padding: 48px 0 40px; font-size: 14px; color: var(--steel); }
.foot .row { display: flex; justify-content: space-between; gap: 32px; flex-wrap: wrap; align-items: flex-start; }
.foot img { height: 22px; width: auto; margin-bottom: 14px; }
.foot nav { display: flex; gap: 26px; flex-wrap: wrap; }
.foot nav a:hover { color: var(--shell); }
.foot .legal { margin-top: 40px; font-family: var(--mono); font-size: 11px; letter-spacing: .08em; color: #5d626a; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

/* Reveal */
.rv { opacity: 0; transform: translateY(24px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.rv.in { opacity: 1; transform: none; }
.rv.d1 { transition-delay: .08s; } .rv.d2 { transition-delay: .16s; } .rv.d3 { transition-delay: .24s; }

/* ---------- Inner pages ---------- */
.page-head { padding: calc(var(--nav-h) + clamp(64px, 12vh, 140px)) 0 clamp(40px, 6vh, 64px); border-bottom: 1px solid var(--line); position: relative; overflow: hidden; }
.page-head h1 { font-size: clamp(36px, 6vw, 84px); letter-spacing: -.035em; line-height: 1; font-weight: 500; margin: 18px 0 0; }
.page-head p { color: var(--steel); max-width: 52ch; margin: 22px 0 0; font-size: 18px; }
.page-head canvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .55; pointer-events: none; }
.page-head .wrap { position: relative; }

/* Contact */
.contact { display: grid; grid-template-columns: 1fr 1.4fr; gap: clamp(40px, 7vw, 110px); padding-top: clamp(56px, 9vh, 96px); padding-bottom: clamp(80px, 14vh, 140px); }
.contact aside h2 { font-size: 22px; font-weight: 500; margin: 0 0 12px; letter-spacing: -.01em; }
.contact aside p { color: var(--steel); margin: 0 0 30px; font-size: 16px; }
.contact aside .item { border-top: 1px solid var(--line); padding: 18px 0; }
.contact aside .item .k { font-family: var(--mono); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--copper); }
.contact aside .item .v { margin-top: 6px; }
form .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; margin-bottom: 18px; }
.field label { font-family: var(--mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--steel); margin-bottom: 8px; }
.field label .req { color: var(--copper); }
.field input, .field select, .field textarea {
  font: inherit; font-size: 16px; color: var(--shell); background: var(--graphite); border: 1px solid var(--line); border-radius: 3px;
  padding: 13px 14px; transition: border-color .2s, background .2s; width: 100%;
}
.field textarea { min-height: 160px; resize: vertical; }
.field select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--steel) 50%), linear-gradient(135deg, var(--steel) 50%, transparent 50%); background-position: calc(100% - 18px) 55%, calc(100% - 13px) 55%; background-size: 5px 5px; background-repeat: no-repeat; }
.field input:hover, .field select:hover, .field textarea:hover { border-color: #3a3f47; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--copper); background: var(--graphite-2); }
.field.err input, .field.err textarea, .field.err select { border-color: #D9634C; }
.field .msg { font-size: 13px; color: #E48671; margin-top: 6px; min-height: 0; }
.check { display: flex; gap: 12px; align-items: flex-start; font-size: 14px; color: var(--steel); margin: 6px 0 26px; }
.check input { margin-top: 4px; accent-color: var(--copper); width: 16px; height: 16px; flex: none; }
.check a { color: var(--shell); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--copper); }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.form-status { margin-top: 18px; font-size: 15px; min-height: 24px; }
.form-status.ok { color: var(--copper-hi); } .form-status.bad { color: #E48671; }
button.btn { font: inherit; font-size: 15px; font-weight: 500; cursor: pointer; background: var(--copper); color: var(--void); padding: 14px 24px; }
button.btn:hover { background: var(--copper-hi); border-color: var(--copper-hi); }
button.btn[disabled] { opacity: .6; cursor: wait; }
@media (max-width: 860px) { .contact { grid-template-columns: 1fr; } form .row2 { grid-template-columns: 1fr; gap: 0; } }

/* Prose (privacy) */
.prose { max-width: 760px; padding-top: clamp(48px, 8vh, 88px); padding-bottom: clamp(80px, 14vh, 140px); }
.prose h2 { font-size: 24px; letter-spacing: -.015em; font-weight: 500; margin: 52px 0 12px; scroll-margin-top: 96px; }
.prose h2 .n { font-family: var(--mono); font-size: 13px; color: var(--copper); margin-right: 12px; letter-spacing: .1em; }
.prose p, .prose li { color: var(--shell-dim); font-size: 16.5px; }
.prose ul { padding-left: 20px; } .prose li { margin: 6px 0; } .prose li::marker { color: var(--copper); }
.prose a { color: var(--shell); text-decoration: underline; text-decoration-color: var(--copper); text-underline-offset: 3px; }
.prose .meta { font-family: var(--mono); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--steel); }
.toc { border: 1px solid var(--line); border-radius: 4px; padding: 22px 26px; margin-top: 36px; background: var(--graphite); }
.toc ol { margin: 10px 0 0; padding-left: 20px; columns: 2; column-gap: 32px; font-size: 15px; }
.toc li { margin: 0 0 8px; break-inside: avoid; color: var(--steel); } .toc a { color: var(--shell-dim); text-decoration: none; } .toc a:hover { color: var(--copper); }
@media (max-width: 640px) { .toc ol { columns: 1; } }

/* 404 */
.lost { min-height: 100svh; display: flex; align-items: center; position: relative; overflow: hidden; }
.lost canvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .6; }
.lost .wrap { position: relative; }
.narrow { max-width: 44ch; } .mt { margin-top: 28px; }
.flush-top { padding-top: 0 !important; }
.lost h1 { font-size: clamp(44px, 7vw, 96px); letter-spacing: -.035em; font-weight: 500; margin: 18px 0 14px; line-height: 1; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .rv { opacity: 1; transform: none; transition: none; }
  .scroll-cue { animation: none; }
  .statement .w { opacity: 1; }
}