/*
  NitroEdge Studios — Stage 3 production homepage + Stage 2 brand system.
  Dependency-free visual tokens, identity language, responsive shell, and accessible interaction states.
*/
:root {
  color-scheme: dark;
  --ink-950: #07090d;
  --ink-900: #0d1117;
  --ink-850: #111722;
  --ink-800: #161d29;
  --ink-700: #252e3d;
  --text: #f6f8fb;
  --muted: #aab3c2;
  --nitro: #ff5a1f;
  --nitro-hot: #ff7a33;
  --charge: #7fe7ff;
  --signal: #ffb000;
  --page: var(--ink-950);
  --surface: var(--ink-900);
  --surface-2: var(--ink-850);
  --line: #2a3444;
  --accent: var(--nitro);
  --max-width: 1180px;
  --radius-sm: 10px;
  --radius: 18px;
  --radius-lg: 28px;
  --shadow-1: 0 18px 60px rgba(0,0,0,.30);
  --shadow-accent: 0 0 0 1px rgba(255,90,31,.16), 0 18px 48px rgba(0,0,0,.28);
  --space-1: .5rem;
  --space-2: .75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --space-7: 5rem;
  --space-8: 7rem;
  --font-sans: "Segoe UI Variable Text", "Segoe UI", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, Arial, sans-serif;
  --font-display: "Segoe UI Variable Display", "Segoe UI", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, Arial, sans-serif;
  --ease-out: cubic-bezier(.2,.75,.25,1);
  --speed-fast: 160ms;
}

* { box-sizing: border-box; }
html { min-width: 320px; background: var(--page); scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 82% 3%, rgba(127,231,255,.09), transparent 28rem),
    radial-gradient(circle at 15% 28%, rgba(255,90,31,.08), transparent 30rem),
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px),
    linear-gradient(180deg, #090c11 0%, var(--page) 48%);
  background-size: auto, auto, 48px 48px, 48px 48px, auto;
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
:focus-visible { outline: 2px solid var(--charge); outline-offset: 3px; }
.shell { width: min(calc(100% - 2rem), var(--max-width)); margin-inline: auto; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; left: 1rem; top: 1rem; z-index: 100; transform: translateY(-180%);
  padding: .7rem 1rem; border: 1px solid var(--charge); border-radius: var(--radius-sm);
  background: var(--text); color: var(--page); text-decoration: none; font-weight: 800;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky; top: 0; z-index: 20; border-bottom: 1px solid rgba(127,231,255,.10);
  background: rgba(7,9,13,.86); backdrop-filter: blur(18px);
}
.site-header::after {
  content: ""; position: absolute; left: 0; bottom: -1px; width: min(18vw, 220px); height: 2px;
  background: linear-gradient(90deg, var(--nitro), var(--signal), transparent); pointer-events: none;
}
.header-inner { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { display: inline-flex; align-items: center; gap: .78rem; text-decoration: none; }
.brand-mark { width: 40px; height: 40px; flex: 0 0 auto; filter: drop-shadow(0 0 14px rgba(255,90,31,.12)); }
.brand-wordmark {
  color: var(--text); font-family: var(--font-display); font-weight: 850; font-size: .98rem; line-height: 1;
  letter-spacing: -.025em; text-transform: uppercase;
}
.brand-wordmark span { margin-left: .35rem; color: var(--charge); font-size: .67rem; letter-spacing: .18em; }
.primary-nav { display: flex; align-items: center; gap: .2rem; }
.primary-nav a {
  position: relative; padding: .7rem .8rem; border-radius: var(--radius-sm); color: var(--muted);
  text-decoration: none; font-size: .92rem; font-weight: 650; transition: color var(--speed-fast) var(--ease-out), background var(--speed-fast) var(--ease-out);
}
.primary-nav a::after {
  content: ""; position: absolute; left: .8rem; right: .8rem; bottom: .38rem; height: 2px;
  transform: scaleX(0); transform-origin: left; background: var(--nitro); transition: transform var(--speed-fast) var(--ease-out);
}
.primary-nav a:hover, .primary-nav a:focus-visible, .primary-nav a[aria-current="page"], .primary-nav a.nav-section-current { background: rgba(255,255,255,.035); color: var(--text); outline: none; }
.primary-nav a:hover::after, .primary-nav a:focus-visible::after, .primary-nav a[aria-current="page"]::after, .primary-nav a.nav-section-current::after { transform: scaleX(1); }
.nav-toggle {
  display: none; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface); color: var(--text);
  padding: .58rem .78rem; font-weight: 700;
}

.hero { position: relative; padding-block: clamp(5rem, 11vw, 9rem) 4rem; }
.hero::before {
  content: ""; position: absolute; top: clamp(5.4rem, 11vw, 9.4rem); left: -1.1rem; width: 4px; height: min(8rem, 28vw);
  background: linear-gradient(var(--nitro), var(--signal)); box-shadow: 0 0 24px rgba(255,90,31,.26);
}
.eyebrow, .card-kicker {
  margin: 0 0 .8rem; color: var(--charge); font-size: .76rem; font-weight: 850; letter-spacing: .18em; text-transform: uppercase;
}
h1 {
  max-width: 15ch; margin: 0; font-family: var(--font-display); font-size: clamp(2.8rem, 8vw, 6.7rem);
  font-weight: 850; line-height: .94; letter-spacing: -.065em; text-wrap: balance;
}
h1::selection, .brand-wordmark::selection { background: var(--nitro); color: var(--ink-950); }
.lede { max-width: 760px; margin: 2rem 0 0; color: var(--muted); font-size: clamp(1.05rem, 2vw, 1.3rem); }
.foundation-note {
  position: relative; margin-top: 2rem; max-width: 760px; display: grid; gap: .28rem; padding: 1rem 1.15rem 1rem 1.35rem;
  border: 1px solid var(--line); border-radius: 0 var(--radius) var(--radius) 0; background: rgba(13,17,23,.72); box-shadow: var(--shadow-1);
}
.foundation-note::before { content: ""; position: absolute; inset: -1px auto -1px -1px; width: 4px; background: var(--nitro); }
.foundation-note strong { letter-spacing: -.01em; }
.foundation-note span { color: var(--muted); }
.foundation-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; padding-bottom: var(--space-8); }
.foundation-card {
  position: relative; min-height: 220px; overflow: hidden; padding: 1.45rem; border: 1px solid var(--line); border-radius: var(--radius);
  background: linear-gradient(145deg, rgba(22,29,41,.82), rgba(9,12,17,.94)); box-shadow: var(--shadow-accent);
  transition: transform var(--speed-fast) var(--ease-out), border-color var(--speed-fast) var(--ease-out);
}
.foundation-card::after {
  content: ""; position: absolute; width: 70px; height: 70px; right: -35px; top: -35px; transform: rotate(45deg);
  background: linear-gradient(90deg, rgba(255,90,31,.28), rgba(127,231,255,.12));
}
.foundation-card:hover { transform: translateY(-3px); border-color: rgba(127,231,255,.32); }
.foundation-card h2 { margin: 0; font-size: 1.25rem; letter-spacing: -.025em; }
.foundation-card p:last-child { color: var(--muted); }

/* Stage 3 production homepage */
.home-hero { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr); align-items: end; gap: clamp(2rem, 6vw, 5.5rem); }
.home-hero h1 { max-width: 10ch; }
.home-hero .lede { max-width: 670px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }
.button {
  display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: .78rem 1.1rem;
  border: 1px solid var(--line); border-radius: var(--radius-sm); text-decoration: none; font-weight: 800;
  transition: transform var(--speed-fast) var(--ease-out), border-color var(--speed-fast) var(--ease-out), background var(--speed-fast) var(--ease-out);
}
.button:hover { transform: translateY(-2px); }
.button-primary { border-color: var(--nitro); background: var(--nitro); color: var(--ink-950); }
.button-primary:hover { background: var(--nitro-hot); }
.button-secondary { background: rgba(255,255,255,.035); color: var(--text); }
.button-secondary:hover { border-color: var(--charge); }
.hero-signal {
  position: relative; overflow: hidden; padding: 1.45rem; border: 1px solid var(--line); border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(22,29,41,.82), rgba(9,12,17,.96)); box-shadow: var(--shadow-accent);
}
.hero-signal::after {
  content: ""; position: absolute; width: 150px; height: 150px; right: -78px; top: -82px; transform: rotate(45deg);
  border: 1px solid rgba(127,231,255,.24); background: rgba(255,90,31,.10);
}
.signal-label, .signal-status { display: block; color: var(--charge); font-size: .72rem; font-weight: 850; letter-spacing: .16em; text-transform: uppercase; }
.hero-signal strong { display: block; margin-top: .75rem; font-family: var(--font-display); font-size: clamp(1.55rem, 3vw, 2.2rem); line-height: 1; letter-spacing: -.045em; }
.hero-signal p { margin: 1rem 0 1.4rem; color: var(--muted); }
.signal-status { color: var(--signal); }

.home-section { padding-block: var(--space-6); }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 2rem; margin-bottom: 1.6rem; }
.section-heading h2 { max-width: 14ch; margin: 0; font-family: var(--font-display); font-size: clamp(2rem, 5vw, 4rem); line-height: .98; letter-spacing: -.045em; }
.compact-heading h2 { max-width: 18ch; }
.text-link { color: var(--charge); text-decoration: none; font-weight: 800; white-space: nowrap; }
.text-link:hover { text-decoration: underline; text-underline-offset: .3em; }
.game-showcase-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
.game-showcase-card { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-lg); background: rgba(13,17,23,.78); box-shadow: var(--shadow-1); }
.game-showcase-visual { overflow: hidden; border-bottom: 1px solid var(--line); background: var(--ink-900); }
.game-showcase-visual img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; transition: transform 320ms var(--ease-out); }
.game-showcase-card:hover .game-showcase-visual img { transform: scale(1.015); }
.game-showcase-body { padding: clamp(1.25rem, 3vw, 1.8rem); }
.game-status { margin: 0 0 .7rem; color: var(--signal); font-size: .75rem; font-weight: 850; letter-spacing: .11em; text-transform: uppercase; }
.game-showcase-body h3 { margin: 0; font-family: var(--font-display); font-size: clamp(1.75rem, 3vw, 2.45rem); line-height: 1; letter-spacing: -.045em; }
.game-showcase-body > p:not(.game-status) { color: var(--muted); }
.tag-list { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1.2rem 0 0; padding: 0; list-style: none; }
.tag-list li { padding: .42rem .62rem; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); background: rgba(255,255,255,.025); font-size: .78rem; }
.studio-principles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.studio-principle { min-height: 220px; padding: 1.35rem; border-top: 1px solid var(--line); background: linear-gradient(180deg, rgba(255,255,255,.025), transparent); }
.principle-number { color: var(--nitro); font-size: .74rem; font-weight: 900; letter-spacing: .15em; }
.studio-principle h3 { margin: 2.6rem 0 .55rem; font-size: 1.25rem; letter-spacing: -.025em; }
.studio-principle p { margin: 0; color: var(--muted); }
.pathway-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; padding-block: var(--space-6) var(--space-8); }
.pathway-card {
  min-height: 190px; display: flex; flex-direction: column; padding: 1.3rem; border: 1px solid var(--line); border-radius: var(--radius);
  background: rgba(13,17,23,.68); text-decoration: none; transition: transform var(--speed-fast) var(--ease-out), border-color var(--speed-fast) var(--ease-out);
}
.pathway-card:hover { transform: translateY(-3px); border-color: rgba(127,231,255,.38); }
.pathway-kicker { color: var(--charge); font-size: .72rem; font-weight: 850; letter-spacing: .16em; text-transform: uppercase; }
.pathway-card strong { margin: auto 0 1rem; font-family: var(--font-display); font-size: 1.45rem; line-height: 1.05; letter-spacing: -.035em; }
.pathway-card > span:last-child { color: var(--muted); font-size: .9rem; }

.site-footer { border-top: 1px solid var(--line); background: rgba(7,9,13,.72); }
.footer-inner { min-height: 120px; display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; color: var(--muted); font-size: .9rem; }
.footer-status { position: relative; padding-left: 1rem; text-align: right; }
.footer-status::before { content: ""; position: absolute; left: 0; top: .63em; width: 6px; height: 6px; background: var(--nitro); transform: rotate(45deg); }

@media (max-width: 900px) {
  .home-hero { grid-template-columns: 1fr; align-items: start; }
  .hero-signal { max-width: 560px; }
  .game-showcase-grid { grid-template-columns: 1fr; }
}

@media (max-width: 800px) {
  .header-inner { min-height: 66px; }
  .brand-mark { width: 36px; height: 36px; }
  .brand-wordmark span { display: none; }
  .nav-toggle { display: inline-flex; }
  .primary-nav {
    display: none; position: absolute; left: 1rem; right: 1rem; top: calc(100% + .5rem); padding: .65rem;
    border: 1px solid var(--line); border-radius: 14px; background: rgba(13,17,23,.98); box-shadow: 0 22px 60px rgba(0,0,0,.46);
  }
  .primary-nav.is-open { display: grid; }
  .primary-nav a { padding: .82rem .9rem; }
  .primary-nav a::after { left: .9rem; right: auto; width: 2.4rem; bottom: .48rem; }
  .hero::before { left: -.35rem; }
  .foundation-grid, .studio-principles-grid, .pathway-grid { grid-template-columns: 1fr; }
  .section-heading { align-items: flex-start; flex-direction: column; }
  .text-link { white-space: normal; }
  .footer-inner { padding-block: 2rem; align-items: flex-start; flex-direction: column; }
  .footer-status { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .foundation-card:hover, .button:hover, .pathway-card:hover { transform: none; }
  .game-showcase-card:hover .game-showcase-visual img { transform: none; }
}