/* ═══════════════════════════════════════════════════════════════
   BROTHERHOOD — tokens, base, chrome (loader / nav / hero)
   Palette: near-black canvas · crimson seal · candle champagne
   ═══════════════════════════════════════════════════════════════ */

:root {
  /* color */
  --bg:             oklch(0.11 0 0);
  --bg-deep:        oklch(0.075 0 0);
  --surface:        oklch(0.165 0.008 30);
  --surface-2:      oklch(0.215 0.01 38);
  --ink:            oklch(0.93 0.012 65);
  --ink-dim:        oklch(0.84 0.014 60);
  --muted:          oklch(0.68 0.016 48);
  --crimson:        oklch(0.54 0.2 8);
  --crimson-deep:   oklch(0.36 0.14 10);
  --crimson-bright: oklch(0.7 0.17 12);
  --champagne:      oklch(0.87 0.06 80);
  --line:           oklch(0.93 0.012 65 / 0.14);
  --line-soft:      oklch(0.93 0.012 65 / 0.08);

  /* type */
  --font-display: "Libre Caslon Display", "Libre Caslon Text", Georgia, serif;
  --font-serif:   "Libre Caslon Text", Georgia, serif;
  --font-sans:    "Schibsted Grotesk", system-ui, -apple-system, sans-serif;

  --step--1: clamp(0.82rem, 0.78rem + 0.2vw, 0.94rem);
  --step-0:  clamp(1rem, 0.95rem + 0.25vw, 1.14rem);
  --step-1:  clamp(1.28rem, 1.16rem + 0.6vw, 1.62rem);
  --step-2:  clamp(1.7rem, 1.45rem + 1.2vw, 2.3rem);
  --step-3:  clamp(2.3rem, 1.85rem + 2.2vw, 3.4rem);
  --step-4:  clamp(2.9rem, 2.2rem + 3.6vw, 4.6rem);
  --step-5:  clamp(3.4rem, 2.4rem + 5vw, 6rem);

  /* space */
  --space-gutter: clamp(1.25rem, 4vw, 4rem);
  --space-section: clamp(4rem, 9vw, 8.5rem);

  /* z scale */
  --z-embers: 2;
  --z-content: 5;
  --z-sticky: 10;
  --z-glow: 30;
  --z-nav: 40;
  --z-progress: 60;
  --z-grain: 70;
  --z-loader: 100;

  /* motion */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);       /* quint-ish */
  --ease-inout: cubic-bezier(0.83, 0, 0.17, 1);
}

/* ── reset / base ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html {
  color-scheme: dark;
  scrollbar-color: oklch(0.35 0.02 30) var(--bg-deep);
}
html, body { height: auto; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

img, svg, video { display: block; max-width: 100%; }
button, input { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
em { font-style: italic; }

h1, h2, h3 { font-weight: 400; text-wrap: balance; }

::selection { background: var(--crimson); color: var(--ink); }

:focus-visible {
  outline: 2px solid var(--champagne);
  outline-offset: 3px;
  border-radius: 2px;
}

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip-path: inset(50%); white-space: nowrap; border: 0;
}

.skip {
  position: fixed; top: 0.75rem; left: 0.75rem;
  z-index: calc(var(--z-loader) + 1);
  background: var(--ink); color: var(--bg-deep);
  padding: 0.6em 1.1em; border-radius: 8px;
  font-weight: 600; font-size: var(--step--1);
  transform: translateY(-160%);
  transition: transform 0.3s var(--ease-out);
}
.skip:focus-visible { transform: translateY(0); }

/* char-split scaffolding (JS builds .line > .word > .char) */
[data-chars] .line { display: block; overflow: clip; padding-block: 0.06em; margin-block: -0.06em; }
[data-chars] .word { display: inline-block; white-space: nowrap; }
[data-chars] .char { display: inline-block; will-change: transform; }

/* entrance gate: chrome hidden until loader hands over */
body:not(.is-loaded) .nav,
body:not(.is-loaded) .hero-content,
body:not(.is-loaded) .hero-foot { opacity: 0; }

/* ── film grain ───────────────────────────────────────────────── */
.grain {
  position: fixed; inset: -60%;
  z-index: var(--z-grain);
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.055;
  animation: grainShift 1.1s steps(4) infinite;
}
@keyframes grainShift {
  0% { transform: translate(0, 0); }
  25% { transform: translate(-2%, 1.4%); }
  50% { transform: translate(1.6%, -1.2%); }
  75% { transform: translate(-1.2%, -2%); }
  100% { transform: translate(0, 0); }
}

/* ── progress hairline ────────────────────────────────────────── */
.progressline {
  position: fixed; top: 0; left: 0; right: 0;
  height: 2px; z-index: var(--z-progress);
  pointer-events: none;
}
.progressline i {
  display: block; height: 100%;
  background: linear-gradient(90deg, var(--crimson) 0%, var(--crimson-bright) 78%, var(--champagne) 100%);
  transform: scaleX(0); transform-origin: 0 50%;
  box-shadow: 0 0 12px oklch(0.7 0.17 12 / 0.55);
}

/* ── loader ───────────────────────────────────────────────────── */
.loader {
  position: fixed; inset: 0;
  z-index: var(--z-loader);
  background: var(--bg-deep);
  display: grid; place-content: center;
  text-align: center;
}
.loader-mark { position: relative; }
.loader-word {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 5.4vw, 3.6rem);
  letter-spacing: 0.34em;
  margin-right: -0.34em; /* optically recentre tracked caps */
  white-space: nowrap;
}
.loader-word--dim { color: oklch(0.93 0.012 65 / 0.13); }
.loader-word--lit {
  position: absolute; inset: 0;
  color: var(--crimson-bright);
  text-shadow: 0 0 26px oklch(0.54 0.2 8 / 0.6);
  clip-path: inset(100% 0 0 0);
  transition: clip-path 0.3s linear; /* smooths sparse ticks in throttled tabs */
}
.loader-sub {
  margin-top: 1.4rem;
  font-size: 0.72rem; letter-spacing: 0.3em;
  color: var(--muted);
}
.loader-pct {
  position: fixed; right: clamp(1.2rem, 4vw, 3rem); bottom: clamp(1rem, 3.5vw, 2.4rem);
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 6vw, 4rem);
  color: oklch(0.93 0.012 65 / 0.32);
  font-variant-numeric: tabular-nums;
}
.loader.is-done { pointer-events: none; }

/* ── nav ──────────────────────────────────────────────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: var(--z-nav);
  display: flex; align-items: center; gap: clamp(1rem, 3vw, 2.5rem);
  padding: 0.9rem var(--space-gutter);
  transition: background-color 0.45s ease, backdrop-filter 0.45s ease, box-shadow 0.45s ease;
}
.nav.is-scrolled {
  background: oklch(0.09 0 0 / 0.62);
  backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--line-soft);
}
.nav-brand { display: flex; align-items: center; gap: 0.7rem; }
.crest { width: 36px; height: 36px; color: var(--ink); flex: none; }
.crest-b {
  font-family: var(--font-display);
  font-size: 30px; fill: currentColor;
}
.nav-name {
  font-family: var(--font-display);
  font-size: 1.08rem; letter-spacing: 0.12em;
  text-transform: uppercase;
}
.nav-links {
  display: flex; gap: clamp(1.1rem, 2.6vw, 2.2rem);
  margin-inline: auto;
}
.nav-links a {
  position: relative;
  font-size: 0.95rem; font-weight: 500;
  color: var(--ink-dim);
  transition: color 0.25s ease;
}
.nav-links a::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: -5px; height: 1.5px;
  background: var(--champagne);
  transform: scaleX(0); transform-origin: left center;
  transition: transform 0.32s var(--ease-out);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after,
.nav-links a:focus-visible::after { transform: scaleX(1); }
.nav-cta { margin-left: auto; }
.nav-links + .nav-cta { margin-left: 0; }

/* ── buttons ──────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.78em 1.5em;
  border: 0; border-radius: 9px;
  font-weight: 600; font-size: var(--step--1);
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out),
              background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}
.btn:active { transform: translateY(1px) scale(0.99); }

.btn--seal {
  background: var(--crimson);
  color: oklch(0.97 0.008 65);
  box-shadow: inset 0 1px 0 oklch(1 0 0 / 0.16), 0 4px 18px oklch(0.54 0.2 8 / 0.25);
}
.btn--seal:hover {
  background: oklch(0.58 0.2 8);
  box-shadow: inset 0 1px 0 oklch(1 0 0 / 0.16), 0 6px 26px oklch(0.54 0.2 8 / 0.45);
  transform: translateY(-1px);
}
.btn--ghost {
  background: oklch(0.93 0.012 65 / 0.04);
  color: var(--ink);
  box-shadow: inset 0 0 0 1px var(--line);
}
.btn--ghost:hover {
  background: oklch(0.93 0.012 65 / 0.09);
  box-shadow: inset 0 0 0 1px oklch(0.93 0.012 65 / 0.3);
}
.btn--ivory {
  background: var(--ink);
  color: var(--crimson-deep);
}
.btn--ivory:hover { background: oklch(0.98 0.008 70); transform: translateY(-1px); }

/* ── hero ─────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  grid-template-rows: 1fr auto;
  isolation: isolate;
}
.hero-media {
  position: absolute; inset: 0; z-index: -1;
  overflow: clip;
  background:
    radial-gradient(90% 70% at 70% 20%, oklch(0.2 0.02 40 / 0.7), transparent 60%),
    linear-gradient(200deg, oklch(0.16 0.01 50) 0%, var(--bg-deep) 60%);
}
.hero-video {
  width: 100%; height: 100%;
  object-fit: cover;
  transform: scale(1.06); /* parallax headroom */
}
.scrim { position: absolute; inset: 0; pointer-events: none; }
.scrim--hero {
  background:
    linear-gradient(to bottom, oklch(0.075 0 0 / 0.72) 0%, oklch(0.075 0 0 / 0) 26%),
    linear-gradient(to top, oklch(0.11 0 0) 2%, oklch(0.11 0 0 / 0) 46%),
    radial-gradient(120% 90% at 50% 42%, oklch(0.075 0 0 / 0) 42%, oklch(0.075 0 0 / 0.66) 100%);
}

.embers { position: absolute; inset: 0; z-index: var(--z-embers); pointer-events: none; overflow: clip; }
.embers i {
  position: absolute; bottom: -2vh;
  width: 3px; height: 3px; border-radius: 50%;
  background: var(--champagne);
  filter: blur(0.4px);
  opacity: 0;
  animation: emberRise 11s linear infinite;
}
.embers i:nth-child(3n) { background: var(--crimson-bright); width: 2px; height: 2px; }
.embers i:nth-child(1)  { left: 8%;  animation-delay: 0s; }
.embers i:nth-child(2)  { left: 16%; animation-delay: 3.2s; animation-duration: 13s; }
.embers i:nth-child(3)  { left: 27%; animation-delay: 1.4s; }
.embers i:nth-child(4)  { left: 34%; animation-delay: 5.8s; animation-duration: 9.5s; }
.embers i:nth-child(5)  { left: 45%; animation-delay: 2.6s; animation-duration: 14s; }
.embers i:nth-child(6)  { left: 52%; animation-delay: 7.4s; }
.embers i:nth-child(7)  { left: 61%; animation-delay: 0.9s; animation-duration: 12s; }
.embers i:nth-child(8)  { left: 68%; animation-delay: 4.7s; }
.embers i:nth-child(9)  { left: 76%; animation-delay: 2.1s; animation-duration: 10s; }
.embers i:nth-child(10) { left: 84%; animation-delay: 6.3s; }
.embers i:nth-child(11) { left: 91%; animation-delay: 3.8s; animation-duration: 13.5s; }
.embers i:nth-child(12) { left: 97%; animation-delay: 8.2s; }
@keyframes emberRise {
  0%   { transform: translate(0, 0); opacity: 0; }
  8%   { opacity: 0.85; }
  60%  { opacity: 0.5; }
  100% { transform: translate(1.6vw, -78vh); opacity: 0; }
}

.hero-content {
  z-index: var(--z-content);
  align-self: center;
  padding: clamp(5.5rem, 14vh, 9rem) var(--space-gutter) 0;
  max-width: 1200px;
  width: 100%;
  margin-inline: auto;
}
.hero-h1 {
  font-family: var(--font-display);
  font-size: var(--step-5);
  line-height: 0.98;
  letter-spacing: -0.012em;
  text-shadow: 0 2px 40px oklch(0.075 0 0 / 0.8);
}
.hero-sub {
  margin-top: 1.6rem;
  max-width: 46ch;
  font-size: var(--step-1);
  line-height: 1.5;
  color: var(--ink-dim);
  text-shadow: 0 1px 24px oklch(0.075 0 0 / 0.9);
}
.hero-ctas { margin-top: 2.2rem; display: flex; flex-wrap: wrap; gap: 0.9rem; }

.hero-foot {
  z-index: var(--z-content);
  padding: 0 var(--space-gutter) 1.4rem;
}
.masthead {
  display: flex; justify-content: space-between;
  border-top: 1px solid var(--line-soft);
  padding-top: 1.1rem;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 4vw, 3.1rem);
  line-height: 1;
  color: var(--ink);
}
.masthead span { display: inline-block; }
.hero-foot-row {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 0.9rem;
  font-size: 0.7rem; letter-spacing: 0.26em;
  color: var(--muted);
}
.scrollcue { width: 1px; height: 44px; background: var(--line); position: relative; overflow: clip; }
.scrollcue i {
  position: absolute; inset: 0;
  background: var(--champagne);
  transform: translateY(-100%);
  animation: cueDrop 2.2s var(--ease-inout) infinite;
}
@keyframes cueDrop {
  0% { transform: translateY(-100%); }
  55% { transform: translateY(0); }
  100% { transform: translateY(102%); }
}