/* ═══════════════════════════════════════════════════════════════
   Schaeffer Audio — Residential Microsite Stylesheet
   Diverges from parent with bronze accent (#A87C4F) replacing
   terracotta. Slightly more generous spacing, more reserved type
   register. Same Inter + JetBrains Mono system, same near-black
   ground. Single-page long-scroll.
   ═══════════════════════════════════════════════════════════════ */

:root {
  --paper: #0F1419;
  --paper-tint: #161B23;
  --paper-deep: #0A0E12;
  --ink: #F8F5EE;
  --ink-deep: #FFFFFF;
  --ink-soft: rgba(248, 245, 238, 0.88);
  --slate: rgba(248, 245, 238, 0.65);
  --muted: rgba(248, 245, 238, 0.45);
  --hairline: rgba(248, 245, 238, 0.10);
  --hairline-soft: rgba(248, 245, 238, 0.06);

  --bronze: #A87C4F;
  --bronze-deep: #8C6539;
  --bronze-soft: rgba(168, 124, 79, 0.18);

  --paper-rgb: 15, 20, 25;
  --ink-rgb: 248, 245, 238;
  --bronze-rgb: 168, 124, 79;

  --sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
  --serif: 'Cormorant Garamond', 'Times New Roman', serif;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink-soft);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-image:
    radial-gradient(circle at 15% 8%, rgba(var(--bronze-rgb), 0.08) 0, transparent 45%),
    radial-gradient(circle at 85% 70%, rgba(var(--ink-rgb), 0.02) 0, transparent 50%);
}

body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.04;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

h1, h2, h3, h4 { margin: 0; font-weight: 400; color: var(--ink); }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 32px; position: relative; z-index: 2; }
.wrap-narrow { max-width: 840px; margin: 0 auto; padding: 0 32px; position: relative; z-index: 2; }

/* ── TYPOGRAPHIC PRIMITIVES ─────────────────────────────── */
.eyebrow {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--bronze);
  font-weight: 500;
}
.label {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}
.rule {
  display: inline-block;
  width: 48px;
  height: 1px;
  background: var(--bronze);
  vertical-align: middle;
  margin: 0 16px;
}

/* ── NAV ────────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(var(--paper-rgb), 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--hairline-soft);
}
.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 32px;
  max-width: 1180px;
  margin: 0 auto;
}
.brand-mark { display: flex; align-items: center; gap: 16px; }
.brand-mark .firm {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: -0.04em;
  color: var(--ink);
}
.brand-mark .division {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--bronze);
  font-weight: 500;
  border-left: 1px solid var(--hairline);
  padding-left: 16px;
}
@media (max-width: 720px) {
  .brand-mark .division { display: none; }
}
.brand-mark img {
  height: 28px;
  width: auto;
  display: block;
  transition: opacity 0.2s ease;
}
.brand-mark:hover img {
  opacity: 0.85;
}
@media (max-width: 720px) {
  .brand-mark img { height: 24px; }
}
.nav-links { display: flex; gap: 30px; align-items: center; }
.nav-links a {
  font-size: 13px;
  color: var(--slate);
  font-weight: 500;
  transition: color 0.2s ease;
}
.nav-links a:hover { color: var(--ink); }
.nav-cta {
  background: transparent;
  color: var(--ink) !important;
  padding: 9px 18px;
  border: 1px solid var(--bronze);
  border-radius: 1px;
  font-size: 12.5px !important;
  letter-spacing: 0.04em;
  transition: background 0.2s ease, color 0.2s ease;
}
.nav-cta:hover { background: var(--bronze); color: var(--paper) !important; }
@media (max-width: 820px) {
  .nav-links a:not(.nav-cta) { display: none; }
}

/* ── BUTTONS ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 28px;
  font-family: var(--sans);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.03em;
  border-radius: 1px;
  transition: all 0.22s ease;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--bronze);
  color: var(--paper);
  border-color: var(--bronze);
}
.btn-primary:hover {
  background: var(--bronze-deep);
  border-color: var(--bronze-deep);
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--hairline);
}
.btn-ghost:hover {
  border-color: var(--bronze);
  color: var(--bronze);
}
.btn .arrow { transition: transform 0.22s ease; }
.btn:hover .arrow { transform: translateX(4px); }

/* ── FADE-IN ─────────────────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(14px);
  animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.d1 { animation-delay: 0.05s; }
.d2 { animation-delay: 0.18s; }
.d3 { animation-delay: 0.32s; }
.d4 { animation-delay: 0.46s; }
.d5 { animation-delay: 0.6s; }
@keyframes fadeInUp {
  to { opacity: 1; transform: translateY(0); }
}

/* ── HERO ────────────────────────────────────────────────── */
.hero {
  padding: 140px 0 120px;
  position: relative;
  overflow: hidden;
}
.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}
.hero-eyebrow .meta {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}
.hero-eyebrow .vol {
  color: var(--bronze);
  font-weight: 500;
}

.hero-title {
  font-family: var(--sans);
  font-weight: 300;
  font-size: clamp(40px, 5.6vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin-bottom: 44px;
  max-width: 18ch;
}
.hero-title .accent {
  font-style: italic;
  font-weight: 300;
  color: var(--bronze);
}

.hero-sub {
  font-size: 19px;
  line-height: 1.6;
  color: var(--slate);
  max-width: 58ch;
  margin-bottom: 56px;
  font-weight: 400;
}

.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-tag {
  position: absolute;
  right: 32px;
  top: 50%;
  transform: translateY(-50%) rotate(-90deg);
  transform-origin: right center;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}
@media (max-width: 1100px) { .hero-tag { display: none; } }

/* ── DISCIPLINES (BENT GRID) ─────────────────────────────── */
.disciplines {
  padding: 100px 0;
  border-top: 1px solid var(--hairline-soft);
}
.section-head {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 60px;
  margin-bottom: 72px;
  align-items: start;
}
.section-head-label {
  position: sticky;
  top: 110px;
}
.section-head-label .num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--bronze);
  margin-bottom: 12px;
}
.section-head-label .name {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--muted);
}
.section-head h2 {
  font-family: var(--sans);
  font-weight: 300;
  font-size: clamp(30px, 3.8vw, 46px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--ink);
  max-width: 22ch;
}
.section-head h2 .accent {
  font-style: italic;
  color: var(--bronze);
  font-weight: 300;
}
@media (max-width: 820px) {
  .section-head { grid-template-columns: 1fr; gap: 28px; }
  .section-head-label { position: static; }
}

.discipline-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--hairline-soft);
  border: 1px solid var(--hairline-soft);
}
.discipline {
  background: var(--paper);
  padding: 44px 40px;
  display: flex;
  flex-direction: column;
  min-height: 280px;
}
.discipline-num {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  color: var(--bronze);
  margin-bottom: 28px;
}
.discipline-title {
  font-family: var(--sans);
  font-weight: 500;
  font-size: 22px;
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: 18px;
  letter-spacing: -0.01em;
}
.discipline-text {
  color: var(--slate);
  font-size: 14.5px;
  line-height: 1.65;
  margin-bottom: 24px;
  flex: 1;
}
.discipline-meta {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: 18px;
  border-top: 1px solid var(--hairline-soft);
}
@media (max-width: 720px) {
  .discipline-grid { grid-template-columns: 1fr; }
  .discipline { min-height: auto; padding: 36px 28px; }
}

/* ── ACOUSTIC FEATURE — full-width bronze-accented section ── */
.acoustic-feature {
  padding: 120px 0;
  border-top: 1px solid var(--hairline-soft);
  position: relative;
}
.acoustic-feature::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, transparent, var(--bronze));
}
.acoustic-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}
.acoustic-text h2 {
  font-family: var(--sans);
  font-weight: 300;
  font-size: clamp(28px, 3.4vw, 40px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 32px;
  max-width: 18ch;
}
.acoustic-text h2 .accent {
  font-style: italic;
  color: var(--bronze);
  font-weight: 300;
}
.acoustic-text p {
  color: var(--slate);
  font-size: 15.5px;
  line-height: 1.7;
  margin: 0 0 18px;
}
.acoustic-spec {
  background: var(--paper-tint);
  padding: 36px 36px 32px;
  border: 1px solid var(--hairline-soft);
}
.acoustic-spec-eyebrow {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--bronze);
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--hairline-soft);
}
.spec-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--hairline-soft);
  align-items: baseline;
}
.spec-row:last-child { border-bottom: none; padding-bottom: 0; }
.spec-row .key {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}
.spec-row .val {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.5;
}
@media (max-width: 820px) {
  .acoustic-grid { grid-template-columns: 1fr; gap: 48px; }
}

/* ── PROJECT CARDS (CONFIDENTIAL) ────────────────────────── */
.projects {
  padding: 120px 0;
  border-top: 1px solid var(--hairline-soft);
}
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.project-card {
  background: var(--paper-tint);
  border: 1px solid var(--hairline-soft);
  padding: 36px 36px 32px;
  position: relative;
  transition: border-color 0.3s ease;
  display: flex;
  flex-direction: column;
  min-height: 360px;
}
.project-card:hover {
  border-color: rgba(var(--bronze-rgb), 0.4);
}
.project-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 32px; height: 1px;
  background: var(--bronze);
}
.project-mark {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.24em;
  color: var(--bronze);
  margin-bottom: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.project-mark .conf {
  color: var(--muted);
  font-weight: 500;
}
.project-name {
  font-family: var(--sans);
  font-weight: 500;
  font-size: 24px;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin-bottom: 12px;
}
.project-loc {
  color: var(--slate);
  font-size: 14.5px;
  margin-bottom: 32px;
}
.project-specs {
  margin-top: auto;
  padding-top: 24px;
  border-top: 1px solid var(--hairline-soft);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 24px;
}
.project-specs .key {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 4px;
  font-weight: 500;
}
.project-specs .val {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.4;
}
@media (max-width: 820px) {
  .project-grid { grid-template-columns: 1fr; }
  .project-card { min-height: auto; }
}

/* ── ENGAGEMENT (3-step) ─────────────────────────────────── */
.engagement {
  padding: 120px 0;
  border-top: 1px solid var(--hairline-soft);
}
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--hairline-soft);
  margin-top: 56px;
}
.step {
  background: var(--paper);
  padding: 40px 36px 36px;
  position: relative;
}
.step-num {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.24em;
  color: var(--bronze);
  margin-bottom: 28px;
}
.step-title {
  font-family: var(--sans);
  font-weight: 500;
  font-size: 19px;
  line-height: 1.25;
  color: var(--ink);
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}
.step-text {
  color: var(--slate);
  font-size: 14.5px;
  line-height: 1.65;
}
@media (max-width: 820px) {
  .steps { grid-template-columns: 1fr; }
}

/* ── CONTACT ─────────────────────────────────────────────── */
.contact {
  padding: 140px 0 120px;
  border-top: 1px solid var(--hairline-soft);
}
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 80px;
  align-items: start;
}
.contact-text h2 {
  font-family: var(--sans);
  font-weight: 300;
  font-size: clamp(32px, 4vw, 50px);
  line-height: 1.08;
  letter-spacing: -0.022em;
  color: var(--ink);
  margin-bottom: 28px;
  max-width: 16ch;
}
.contact-text h2 .accent {
  font-style: italic;
  color: var(--bronze);
  font-weight: 300;
}
.contact-text p {
  color: var(--slate);
  font-size: 16px;
  line-height: 1.7;
  max-width: 50ch;
  margin: 0 0 18px;
}
.contact-card {
  background: var(--paper-tint);
  border: 1px solid var(--hairline-soft);
  padding: 40px;
}
.contact-row {
  padding: 20px 0;
  border-bottom: 1px solid var(--hairline-soft);
}
.contact-row:first-child { padding-top: 0; }
.contact-row:last-child { border-bottom: none; padding-bottom: 0; }
.contact-row .key {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
  font-weight: 500;
}
.contact-row .val {
  font-size: 16px;
  color: var(--ink);
  line-height: 1.4;
}
.contact-row .val a:hover { color: var(--bronze); }
@media (max-width: 820px) {
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
}

/* ── FOOTER ──────────────────────────────────────────────── */
.footer {
  padding: 48px 0;
  border-top: 1px solid var(--hairline-soft);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
}
.footer-mono {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}
.footer-mono a:hover { color: var(--bronze); }
@media (max-width: 600px) {
  .hero { padding: 80px 0 80px; }
  .disciplines, .acoustic-feature, .projects, .engagement { padding: 80px 0; }
  .contact { padding: 88px 0 80px; }
}