/* ==========================================================================
   GRAIN & STEEL — main.css
   Tokens, base, typography, layout, header, footer, page sections.
   Layout concept: warm dark editorial grid — wide margins, hairline rules,
   asymmetric photo stacks, one serif voice set against a geometric sans.
   ========================================================================== */

:root {
  /* Colour */
  --color-bg: #100E0C;
  --color-bg-2: #171310;
  --color-surface: #211B16;
  --color-surface-raised: #2A221C;
  --color-brown: #3A2A20;
  --color-leather: #76543C;
  --color-accent: #A77B51;
  --color-accent-soft: rgba(167, 123, 81, 0.16);
  --color-neutral: #C8B69E;
  --color-text: #E8DFD3;
  --color-muted: #A49A8D;
  --color-dim: #857B6F;
  --color-border: rgba(232, 223, 211, 0.15);
  --color-border-strong: rgba(232, 223, 211, 0.32);
  --color-error: #E0957A;
  --color-scrim: rgba(12, 10, 8, 0.72);

  /* Type */
  /* Syne has no Cyrillic: Russian glyphs fall through to Manrope, Latin stays Syne. */
  --font-display: 'Syne', 'Manrope', 'Arial Narrow', 'Helvetica Neue', Arial, sans-serif;
  --font-serif: 'Cormorant Garamond', 'Iowan Old Style', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;

  --fs-label: 0.6875rem;
  --fs-small: 0.8125rem;
  --fs-body: 1rem;
  --fs-lead: clamp(1.0625rem, 0.4vw + 0.95rem, 1.25rem);
  --fs-h3: clamp(1.25rem, 0.8vw + 1rem, 1.625rem);
  --fs-h2: clamp(2.25rem, 4.6vw, 4.75rem);
  --fs-display: clamp(2.5rem, 6.1vw, 6.5rem);
  --fs-serif-xl: clamp(2.4rem, 5.4vw, 5.75rem);

  /* Layout */
  --container-width: 1440px;
  --gutter: 32px;
  --container: min(100% - (var(--gutter) * 2), var(--container-width));
  --section-space: clamp(88px, 11vw, 168px);
  --header-h: 84px;
  --radius: 2px;

  /* Motion */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 180ms;
  --transition-base: 300ms;
  --transition-slow: 560ms;

  color-scheme: dark;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + 16px);
  scrollbar-gutter: stable;
}
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}
body {
  margin: 0;
  min-height: 100vh;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
body.is-locked { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; padding: 0; }
h1, h2, h3, h4, p, ul, ol, figure, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
[hidden] { display: none !important; }
::selection { background: var(--color-accent); color: var(--color-bg); }

:focus-visible {
  outline: 2px solid var(--color-neutral);
  outline-offset: 3px;
}

.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: fixed; z-index: 200; left: 16px; top: -80px;
  padding: 12px 18px;
  background: var(--color-text); color: var(--color-bg);
  font-family: var(--font-display); font-size: var(--fs-small); font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
}
.skip-link:focus-visible { top: 12px; }

/* ---------- Icons (SVG files used as masks so they take currentColor) ---------- */
.icon {
  display: inline-block;
  flex: none;
  width: 1em; height: 1em;
  background-color: currentColor;
  -webkit-mask: var(--icon) center / contain no-repeat;
  mask: var(--icon) center / contain no-repeat;
}
.icon-arrow { --icon: url('../icons/arrow-up-right.svg'); }
.icon-menu { --icon: url('../icons/menu.svg'); }
.icon-close { --icon: url('../icons/close.svg'); }
.icon-clock { --icon: url('../icons/clock.svg'); }
.icon-location { --icon: url('../icons/location.svg'); }

/* ---------- Layout ---------- */
.container { width: var(--container); margin-inline: auto; }
.section { padding-block: var(--section-space); }
.section--tight { padding-block: calc(var(--section-space) * 0.6); }
.section--rule { border-top: 1px solid var(--color-border); }
.section--alt { background: var(--color-bg-2); }

/* ---------- Typography ---------- */
.label {
  font-family: var(--font-display);
  font-size: var(--fs-label);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-muted);
}
.label--accent { color: var(--color-accent); }
.label--text { color: var(--color-text); }

.eyebrow { display: flex; align-items: center; gap: 14px; }
.eyebrow::before {
  content: "";
  width: 28px; height: 1px;
  background: var(--color-accent);
  flex: none;
}

.display {
  font-family: var(--font-display);
  font-size: var(--fs-display);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.035em;
  text-transform: uppercase;
  text-wrap: balance;
}
.h2 {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  text-wrap: balance;
}
.h3 {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
}
.serif {
  font-family: var(--font-serif);
  font-weight: 400;
  font-style: italic;
  letter-spacing: -0.01em;
  text-transform: none;
}
.serif-xl {
  font-family: var(--font-serif);
  font-size: var(--fs-serif-xl);
  font-weight: 400;
  font-style: italic;
  line-height: 0.98;
  letter-spacing: -0.02em;
  text-wrap: balance;
}
.lead {
  font-size: var(--fs-lead);
  line-height: 1.6;
  color: var(--color-muted);
  max-width: 46ch;
}
.body-copy { color: var(--color-muted); max-width: 60ch; }
.body-copy p + p { margin-top: 1em; }
.text-accent { color: var(--color-accent); }
.tnum { font-variant-numeric: tabular-nums; }

/* ---------- Media frames ---------- */
.media {
  position: relative;
  overflow: hidden;
  background: linear-gradient(160deg, var(--color-surface), var(--color-bg-2));
  border-radius: var(--radius);
}
.media img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.04) sepia(0.08);
}
.media--focus-high img { object-position: 50% 42%; }
.media::after {
  /* fallback label shown only when the image fails */
  content: attr(data-fallback);
  position: absolute; inset: 0;
  display: none;
  align-items: center; justify-content: center;
  padding: 24px;
  text-align: center;
  font-family: var(--font-display);
  font-size: var(--fs-label);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-dim);
  background:
    repeating-linear-gradient(135deg, rgba(232,223,211,0.03) 0 1px, transparent 1px 14px),
    var(--color-surface);
}
.media.is-broken img { visibility: hidden; }
.media.is-broken::after { display: flex; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(16, 14, 12, 0.88);
  border-bottom: 1px solid var(--color-border);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  transition: background-color var(--transition-base) var(--ease);
}
.site-header.is-scrolled { background: rgba(16, 14, 12, 0.96); }
.header-inner {
  width: var(--container);
  margin-inline: auto;
  height: var(--header-h);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 32px;
  transition: height var(--transition-base) var(--ease);
}
.site-header.is-scrolled .header-inner { height: 68px; }

.brand { display: inline-flex; flex-direction: column; gap: 4px; line-height: 1; }
.brand-name {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  white-space: nowrap;
}
.brand-name .amp { font-family: var(--font-serif); font-style: italic; font-weight: 500; letter-spacing: 0; color: var(--color-accent); padding-inline: 0.12em; }
.brand-sub {
  font-family: var(--font-display);
  font-size: 0.5625rem;
  font-weight: 600;
  letter-spacing: 0.32em;
  color: var(--color-muted);
  white-space: nowrap;
}

.nav { justify-self: center; }
.nav-list { display: flex; gap: clamp(20px, 3vw, 44px); }
.nav-link {
  position: relative;
  display: inline-block;
  padding-block: 10px;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--color-muted);
  transition: color var(--transition-fast) var(--ease);
}
.nav-link::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: 4px;
  height: 1px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base) var(--ease-out);
}
.nav-link:hover, .nav-link:focus-visible { color: var(--color-text); }
.nav-link:hover::after, .nav-link:focus-visible::after { transform: scaleX(1); }
.nav-link[aria-current="page"] { color: var(--color-text); }
.nav-link[aria-current="page"]::after { transform: scaleX(1); background: var(--color-text); }

.header-actions { display: flex; align-items: center; gap: 12px; }
.menu-toggle {
  display: none;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 22px;
  transition: border-color var(--transition-fast) var(--ease);
}
.menu-toggle:hover { border-color: var(--color-border-strong); }

/* ---------- Mobile menu panel ---------- */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-12px);
  transition: opacity var(--transition-base) var(--ease), transform var(--transition-base) var(--ease), visibility 0s linear var(--transition-base);
}
.mobile-menu.is-open {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition: opacity var(--transition-base) var(--ease), transform var(--transition-base) var(--ease), visibility 0s;
}
.mobile-menu-head {
  width: var(--container);
  margin-inline: auto;
  height: 72px;
  display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--color-border);
}
.mobile-menu-body {
  flex: 1;
  overflow-y: auto;
  width: var(--container);
  margin-inline: auto;
  display: flex; flex-direction: column; justify-content: space-between;
  gap: 40px;
  padding-block: 24px 32px;
}
.mobile-nav-link {
  display: flex; align-items: baseline; justify-content: space-between;
  padding-block: 18px;
  border-bottom: 1px solid var(--color-border);
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 9vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
}
.mobile-nav-link .label { font-size: 0.625rem; }
.menu-credit { margin-top: 20px; }
.mobile-nav-link[aria-current="page"] { color: var(--color-accent); }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-2);
  padding-top: clamp(64px, 8vw, 112px);
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  padding-bottom: clamp(56px, 7vw, 96px);
}
.footer-brand .brand-name { font-size: clamp(1.75rem, 3.4vw, 3rem); letter-spacing: 0.06em; }
.footer-brand .brand-sub { margin-top: 12px; font-size: 0.6875rem; }
.footer-slogan {
  margin-top: 40px;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.5rem, 2.4vw, 2.25rem);
  line-height: 1.1;
  color: var(--color-neutral);
  max-width: 18ch;
}
.footer-col h2 { margin-bottom: 20px; }
.footer-links { display: grid; gap: 4px; }
.footer-links a {
  display: inline-flex; align-items: center; gap: 8px;
  padding-block: 6px;
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--color-muted);
  transition: color var(--transition-fast) var(--ease);
}
.footer-links a:hover, .footer-links a:focus-visible { color: var(--color-text); }
.footer-note { color: var(--color-muted); font-size: var(--fs-small); max-width: 34ch; }
.footer-note + .btn { margin-top: 24px; }
.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-block: 22px;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 8px 24px;
}

/* ==========================================================================
   Page sections
   ========================================================================== */

/* ---------- Home hero ---------- */
.hero { padding-block: clamp(40px, 6vw, 88px) clamp(72px, 9vw, 128px); }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(32px, 5vw, 88px);
  align-items: stretch;
}
.hero-copy {
  display: flex; flex-direction: column; justify-content: space-between;
  gap: 48px;
  padding-top: clamp(8px, 2vw, 32px);
}
.hero-title { margin-top: 28px; }
.hero-title .line { display: block; }
.hero-title .serif {
  display: block;
  margin-top: 0.12em;
  font-size: 0.86em;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-neutral);
}
.hero-text { margin-top: 32px; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 24px; margin-top: 40px; }
.hero-foot {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 12px 24px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}

.hero-media {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  grid-template-rows: auto auto;
  gap: 14px;
  align-content: start;
}
.hero-media .m-main { grid-column: 1 / 5; grid-row: 1 / 3; aspect-ratio: 4 / 5.4; }
.hero-media .m-side { grid-column: 5 / 7; grid-row: 1; aspect-ratio: 4 / 5; margin-top: 18%; }
.hero-media .m-detail { grid-column: 5 / 7; grid-row: 2; aspect-ratio: 1 / 1; align-self: end; }
.hero-caption {
  grid-column: 1 / -1;
  display: flex; justify-content: space-between; gap: 16px;
  padding-top: 8px;
}

/* ---------- Philosophy ---------- */
.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(24px, 3vw, 48px);
  align-items: start;
}
.philosophy-head { grid-column: 1 / 8; }
.philosophy-head .h2 { margin-top: 24px; }
.philosophy-body { grid-column: 9 / 13; padding-top: clamp(0px, 6vw, 96px); }
.philosophy-media { grid-column: 1 / 6; aspect-ratio: 4 / 5; margin-top: clamp(24px, 4vw, 64px); }
.philosophy-points {
  grid-column: 7 / 13;
  align-self: end;
  display: grid;
  border-top: 1px solid var(--color-border);
}
.point {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 16px;
  padding-block: 24px;
  border-bottom: 1px solid var(--color-border);
}
.point-num { font-family: var(--font-display); font-size: var(--fs-small); color: var(--color-accent); letter-spacing: 0.1em; }
.point p { margin-top: 8px; color: var(--color-muted); font-size: 0.9375rem; max-width: 44ch; }

/* ---------- Section heads ---------- */
.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.6fr);
  gap: 24px 48px;
  align-items: end;
  margin-bottom: clamp(40px, 5vw, 72px);
}
.section-head .h2 { margin-top: 20px; }
.section-head .lead { justify-self: end; }

/* ---------- Statement band ---------- */
.statement {
  padding-block: clamp(72px, 9vw, 136px);
  border-block: 1px solid var(--color-border);
  text-align: center;
}
.statement .serif-xl { margin-inline: auto; max-width: 16ch; color: var(--color-neutral); }
.statement .label { margin-top: 28px; }

/* ---------- Services page / about page hero ---------- */
.page-hero { padding-block: clamp(56px, 8vw, 120px) clamp(48px, 6vw, 88px); border-bottom: 1px solid var(--color-border); }
.page-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 32px 64px;
  align-items: end;
}
.page-hero .display { margin-top: 28px; }
.page-hero .lead { justify-self: end; }

.process {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--color-border);
}
.process-step {
  padding: 28px 28px 32px 0;
  border-right: 1px solid var(--color-border);
}
.process-step + .process-step { padding-left: 28px; }
.process-step:last-child { border-right: 0; }
.process-step .h3 { margin-top: 40px; }
.process-step p { margin-top: 12px; color: var(--color-muted); font-size: 0.9375rem; }

.about-split {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(24px, 3vw, 48px);
  align-items: center;
}
.about-split .about-media { grid-column: 1 / 7; aspect-ratio: 4 / 5; }
.about-split .about-copy { grid-column: 8 / 13; }
.about-split--reverse .about-media { grid-column: 7 / 13; grid-row: 1; }
.about-split--reverse .about-copy { grid-column: 1 / 6; grid-row: 1; }
.about-copy .h2 { margin-top: 20px; margin-bottom: 28px; }

.details-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--color-border);
}
.detail { padding: 32px 32px 8px 0; }
.detail + .detail { padding-left: 32px; border-left: 1px solid var(--color-border); }
.detail p { margin-top: 12px; color: var(--color-muted); font-size: 0.9375rem; }

.cta-band { padding-block: clamp(80px, 10vw, 152px); text-align: center; }
.cta-band .h2 { margin: 24px auto 0; max-width: 14ch; }
.cta-band .actions { margin-top: 40px; display: flex; flex-wrap: wrap; justify-content: center; gap: 14px 20px; }

/* ---------- Booking page ---------- */
.booking-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(32px, 5vw, 96px);
  align-items: start;
}
.booking-aside { position: sticky; top: calc(var(--header-h) + 24px); }
.booking-aside .display { margin-top: 28px; font-size: clamp(2.4rem, 5.2vw, 5rem); }
.booking-aside .lead { margin-top: 28px; }
.booking-steps { margin-top: 40px; border-top: 1px solid var(--color-border); }
.booking-steps li {
  display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: 12px;
  padding-block: 16px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-muted);
  font-size: 0.9375rem;
}
.booking-steps .point-num { padding-top: 2px; }
.booking-panel {
  background: var(--color-bg-2);
  border: 1px solid var(--color-border);
  padding: clamp(20px, 3.4vw, 48px);
}
.booking-meta { margin-top: 28px; }
/* The page already has the title in its own h1. */
.booking-panel .booking-head { display: none; }
.booking-panel .booking-form { margin-top: 0; }
.booking-from { margin-top: 24px; padding: 14px 16px; border-left: 2px solid var(--color-accent); background: var(--color-accent-soft); font-size: 0.9375rem; }

/* ---------- Reveal on scroll (only armed when JS confirms a visible page) ---------- */
.reveal-armed .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--transition-slow) var(--ease-out), transform var(--transition-slow) var(--ease-out);
  transition-delay: var(--delay, 0ms);
}
.reveal-armed .reveal.is-visible { opacity: 1; transform: none; }

.intro-armed .intro {
  animation: intro-rise 760ms var(--ease-out) both;
  animation-delay: var(--delay, 0ms);
}
@keyframes intro-rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}