/* ============================================================
   NUYA CONSULTING — Brand stylesheet
   Built to Nuya Brand Guidelines 2026 v1.0
   Palette: near-black + warm gold accent on off-white
   Type: Cormorant Garamond (display) + DM Sans (body)
   ============================================================ */

/* ---------- Self-hosted fonts ---------- */
@font-face {
  font-family: 'Cormorant Garamond';
  font-style: normal; font-weight: 300; font-display: swap;
  src: url('fonts/cormorant-garamond-latin-300-normal.woff2') format('woff2'),
       url('fonts/cormorant-garamond-latin-300-normal.woff') format('woff');
}
@font-face {
  font-family: 'Cormorant Garamond';
  font-style: normal; font-weight: 400; font-display: swap;
  src: url('fonts/cormorant-garamond-latin-400-normal.woff2') format('woff2'),
       url('fonts/cormorant-garamond-latin-400-normal.woff') format('woff');
}
@font-face {
  font-family: 'Cormorant Garamond';
  font-style: normal; font-weight: 500; font-display: swap;
  src: url('fonts/cormorant-garamond-latin-500-normal.woff2') format('woff2'),
       url('fonts/cormorant-garamond-latin-500-normal.woff') format('woff');
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal; font-weight: 300; font-display: swap;
  src: url('fonts/dm-sans-latin-300-normal.woff2') format('woff2'),
       url('fonts/dm-sans-latin-300-normal.woff') format('woff');
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal; font-weight: 400; font-display: swap;
  src: url('fonts/dm-sans-latin-400-normal.woff2') format('woff2'),
       url('fonts/dm-sans-latin-400-normal.woff') format('woff');
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal; font-weight: 500; font-display: swap;
  src: url('fonts/dm-sans-latin-500-normal.woff2') format('woff2'),
       url('fonts/dm-sans-latin-500-normal.woff') format('woff');
}

:root {
  /* Primary palette */
  --nuya-black: #1a1a1a;
  --nuya-gold: #b5a98e;
  --off-white: #fafaf8;
  --warm-grey: #6b6b6b;

  /* Secondary palette */
  --light-sand: #e8e2d8;
  --dark-gold: #8c7d65;
  --cream: #f0ede8;
  --border-grey: #ddd9d3;

  /* Type */
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;

  --maxw: 1120px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--nuya-black);
  background: var(--off-white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---------- Typography ---------- */
h1, h2, h3, .display {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: 0.01em;
}
h1 { font-weight: 300; }

p { color: var(--warm-grey); }

a { color: inherit; text-decoration: none; transition: color 0.25s var(--ease); }

.label {
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--dark-gold);
}

.lead { font-size: 1.18rem; color: var(--warm-grey); max-width: 60ch; }

/* ---------- Layout ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 2rem; }

section { padding: 7rem 0; }

.gold-rule { width: 56px; height: 1.5px; background: var(--nuya-gold); border: 0; margin: 0 0 1.6rem; }
.gold-rule.center { margin-left: auto; margin-right: auto; }

/* ---------- Logo wordmark ---------- */
.logo {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.55rem;
  letter-spacing: 0.08em;
  color: var(--nuya-black);
}
.logo .dot { color: var(--nuya-gold); }
.logo.reversed { color: var(--off-white); }

/* ---------- Header / nav ---------- */
header.site {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250,250,248,0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-grey);
}
header.site .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 76px;
}
nav.main { display: flex; gap: 2.4rem; align-items: center; }
nav.main a {
  font-size: 0.9rem; letter-spacing: 0.04em; color: var(--nuya-black);
  position: relative; padding: 0.2rem 0;
}
nav.main a::after {
  content: ''; position: absolute; left: 0; bottom: -2px;
  width: 0; height: 1.5px; background: var(--nuya-gold);
  transition: width 0.3s var(--ease);
}
nav.main a:hover::after, nav.main a[aria-current="page"]::after { width: 100%; }
nav.main a[aria-current="page"] { color: var(--nuya-black); }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; font-size: 1.4rem; color: var(--nuya-black); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-body); font-size: 0.9rem; font-weight: 500;
  letter-spacing: 0.04em;
  padding: 0.85rem 1.7rem;
  border: 1.5px solid var(--nuya-black);
  background: var(--nuya-black); color: var(--off-white);
  cursor: pointer; transition: all 0.3s var(--ease);
}
.btn:hover { background: transparent; color: var(--nuya-black); }
.btn.ghost { background: transparent; color: var(--nuya-black); }
.btn.ghost:hover { background: var(--nuya-black); color: var(--off-white); }
.btn .arrow { transition: transform 0.3s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

/* ---------- Hero ---------- */
.hero { padding: 8.5rem 0 7rem; }
.hero h1 { font-size: clamp(3rem, 7vw, 5.6rem); margin-bottom: 1.8rem; }
.hero h1 .gilt { color: var(--nuya-gold); }
.hero .lead { font-size: 1.3rem; margin-bottom: 2.6rem; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* ---------- Dark band ---------- */
.band-dark {
  background: var(--nuya-black); color: var(--off-white);
}
.band-dark h2 { color: var(--off-white); }
.band-dark p { color: #b8b5ae; }
.band-dark .label { color: var(--nuya-gold); }

/* ---------- Generic section heading ---------- */
.sec-head h2 { font-size: clamp(2.1rem, 4vw, 3.1rem); margin-bottom: 1rem; }
.sec-head { margin-bottom: 3.5rem; max-width: 64ch; }

/* ---------- Values / grid cards ---------- */
.grid { display: grid; gap: 1.5rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--off-white);
  border: 1px solid var(--border-grey);
  padding: 2.2rem 2rem;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease);
}
.card:hover { transform: translateY(-4px); border-color: var(--nuya-gold); }
.card .idx { font-family: var(--font-display); font-size: 1.6rem; color: var(--nuya-gold); display: block; margin-bottom: 0.8rem; }
.card h3 { font-size: 1.5rem; margin-bottom: 0.7rem; }
.card p { font-size: 0.95rem; }

.band-dark .card { background: #222121; border-color: #333; }
.band-dark .card:hover { border-color: var(--nuya-gold); }

/* ---------- Value list (foundation) ---------- */
.value-row { display: flex; gap: 1.2rem; padding: 1.5rem 0; border-bottom: 1px solid var(--border-grey); }
.value-row:last-child { border-bottom: 0; }
.value-row .arrow-mark { color: var(--nuya-gold); font-size: 1.2rem; flex-shrink: 0; }
.value-row h3 { font-size: 1.4rem; margin-bottom: 0.2rem; }
.value-row .v-body { font-size: 0.96rem; }

/* ---------- Stat row ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.stat .num { font-family: var(--font-display); font-size: clamp(2.6rem, 5vw, 3.6rem); font-weight: 300; line-height: 1; }
.stat .num .dot { color: var(--nuya-gold); }
.stat .cap { font-size: 0.82rem; letter-spacing: 0.06em; color: var(--warm-grey); margin-top: 0.6rem; }
.band-dark .stat .cap { color: #b8b5ae; }

/* ---------- Two-column feature ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.split .panel {
  aspect-ratio: 4/3; background: linear-gradient(135deg, var(--cream), var(--light-sand));
  border: 1px solid var(--border-grey); position: relative; overflow: hidden;
}
.split .panel .mark {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-size: 5rem; color: var(--nuya-gold); opacity: 0.5;
  letter-spacing: 0.08em;
}

/* ---------- Service detail blocks ---------- */
.svc { padding: 3rem 0; border-bottom: 1px solid var(--border-grey); display: grid; grid-template-columns: 0.7fr 1.3fr; gap: 3rem; }
.svc:last-child { border-bottom: 0; }
.svc .svc-num { font-family: var(--font-display); font-size: 2.6rem; font-weight: 300; color: var(--nuya-gold); }
.svc h3 { font-size: 1.9rem; margin-bottom: 0.9rem; }
.svc ul { list-style: none; margin-top: 1.2rem; }
.svc ul li { position: relative; padding-left: 1.4rem; margin-bottom: 0.5rem; font-size: 0.96rem; color: var(--warm-grey); }
.svc ul li::before { content: '—'; position: absolute; left: 0; color: var(--nuya-gold); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }
.field { margin-bottom: 1.4rem; }
.field label { display: block; font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--nuya-black); margin-bottom: 0.5rem; }
.field input, .field textarea {
  width: 100%; font-family: var(--font-body); font-size: 0.98rem; color: var(--nuya-black);
  background: var(--off-white); border: 1px solid var(--border-grey); padding: 0.85rem 1rem;
  transition: border-color 0.25s var(--ease);
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--nuya-gold); }
.field textarea { resize: vertical; min-height: 130px; }

.detail-row { padding: 1.3rem 0; border-bottom: 1px solid var(--border-grey); }
.detail-row:last-child { border-bottom: 0; }
.detail-row .label { display: block; margin-bottom: 0.35rem; }
.detail-row .val { font-size: 1.05rem; color: var(--nuya-black); }

.form-note { font-size: 0.82rem; color: var(--warm-grey); margin-top: 0.4rem; }

/* ---------- Footer ---------- */
footer.site { background: var(--nuya-black); color: var(--off-white); padding: 4rem 0 2.5rem; }
footer.site .f-top { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 2rem; padding-bottom: 2.5rem; border-bottom: 1px solid #333; }
footer.site nav { display: flex; gap: 2rem; flex-wrap: wrap; }
footer.site nav a { font-size: 0.9rem; color: #b8b5ae; }
footer.site nav a:hover { color: var(--nuya-gold); }
footer.site .f-tag { font-family: var(--font-display); font-size: 1.3rem; color: var(--off-white); margin-top: 0.6rem; }
footer.site .f-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem; padding-top: 1.8rem; font-size: 0.8rem; color: #8a877f; }

/* ---------- Reveal animation ----------
   Visible by default. Only hidden once JS confirms it can animate them back in,
   so content never disappears if JS is slow, disabled, or fails. */
.js .reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  section { padding: 4.5rem 0; }
  .grid-3, .grid-4, .stats { grid-template-columns: repeat(2, 1fr); }
  .split, .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .svc { grid-template-columns: 1fr; gap: 1rem; }
  nav.main {
    position: fixed; inset: 76px 0 auto 0; background: var(--off-white);
    flex-direction: column; gap: 0; padding: 1rem 2rem 2rem;
    border-bottom: 1px solid var(--border-grey);
    transform: translateY(-120%); transition: transform 0.35s var(--ease); z-index: 40;
  }
  nav.main.open { transform: translateY(0); }
  nav.main a { padding: 0.9rem 0; border-bottom: 1px solid var(--border-grey); width: 100%; }
  .nav-toggle { display: block; }
}
@media (max-width: 520px) {
  .grid-3, .grid-4, .stats, .grid-2 { grid-template-columns: 1fr; }
  .wrap { padding: 0 1.4rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .btn { justify-content: center; }
}

/* ---------- Case study tiles (Option C) ---------- */
.tile-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.tile {
  border: 1px solid var(--border-grey);
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}
.tile:hover { transform: translateY(-3px); border-color: var(--dark-gold); }
.tile-top {
  background: var(--nuya-black);
  padding: 1.6rem 1.4rem 1.2rem;
  min-height: 100px;
  display: flex; flex-direction: column; justify-content: flex-end;
}
.tile-top .tile-num {
  font-family: var(--font-display);
  font-size: 1.8rem; font-weight: 300;
  color: var(--dark-gold);
  margin-bottom: 0.4rem;
  line-height: 1;
}
.tile-top h3 {
  font-size: 1.15rem; font-weight: 400;
  color: var(--off-white);
  line-height: 1.3;
}
.tile-bot { padding: 1.2rem 1.4rem; }
.tile-bot .tile-sector {
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dark-gold);
  font-weight: 500;
  margin-bottom: 0.35rem;
}
.tile-bot .tile-sub {
  font-size: 0.92rem;
  color: var(--warm-grey);
  margin-bottom: 0;
}
.tile-bot .tile-detail {
  display: none;
  margin-top: 0.9rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--border-grey);
}
.tile-bot .tile-detail p {
  font-size: 0.92rem;
  color: var(--warm-grey);
  line-height: 1.65;
  margin-bottom: 0.8rem;
}
.tile-bot .tile-detail ul { list-style: none; margin: 0; }
.tile-bot .tile-detail ul li {
  position: relative;
  padding-left: 1.2rem;
  margin-bottom: 0.35rem;
  font-size: 0.9rem;
  color: var(--warm-grey);
}
.tile-bot .tile-detail ul li::before {
  content: '—'; position: absolute; left: 0; color: var(--dark-gold);
}
.tile.open .tile-detail { display: block; }
.tile .tile-toggle {
  display: block;
  margin-top: 0.6rem;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--dark-gold);
  font-weight: 500;
}
.tile.open .tile-toggle .plus { display: none; }
.tile:not(.open) .tile-toggle .minus { display: none; }

@media (max-width: 680px) {
  .tile-grid { grid-template-columns: 1fr; }
}