/* ============================================================
   GO BUILD GROUP PTY LTD — Site stylesheet
   Brand: Ironbark Charcoal / Limestone Ivory / Site Amber
   ============================================================ */

:root {
  --charcoal: #17191E;
  --ink: #1F232B;
  --ink-soft: #2A2F39;
  --ivory: #F4F1EA;
  --white: #FFFFFF;
  --amber: #E0862C;
  --amber-dark: #B5661C;
  --stone: #8B8578;
  --mist: #9BA0AB;
  --line: rgba(23, 25, 30, 0.12);
  --line-light: rgba(244, 241, 234, 0.14);
  --shadow: 0 18px 45px -18px rgba(23, 25, 30, 0.28);
  --radius: 10px;
  --font-display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Inter", "Helvetica Neue", Arial, sans-serif;
  --max: 1180px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.65;
  color: var(--charcoal);
  background: var(--ivory);
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; height: auto; }

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.015em;
}

h1 { font-size: clamp(2.5rem, 5.6vw, 4.3rem); }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.8rem); }
h3 { font-size: 1.28rem; }

p { max-width: 62ch; }

.container { width: min(var(--max), 92vw); margin-inline: auto; }

/* ---------- utility ---------- */
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--amber-dark);
  margin-bottom: 1.1rem;
}
.kicker::before {
  content: "";
  width: 30px;
  height: 3px;
  background: var(--amber);
}
.on-dark .kicker { color: var(--amber); }

.lead { font-size: 1.14rem; color: rgba(23, 25, 30, 0.78); }
.on-dark .lead { color: var(--mist); }

.section { padding: clamp(4rem, 8vw, 6.5rem) 0; }
.section-head { margin-bottom: clamp(2.2rem, 4vw, 3.4rem); max-width: 720px; }
.section-head p { margin-top: 1rem; }

.bg-white { background: var(--white); }
.bg-dark { background: var(--charcoal); color: var(--ivory); }
.bg-ink { background: var(--ink); color: var(--ivory); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.95rem 1.7rem;
  border: 2px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.22s ease;
}
.btn-primary { background: var(--amber); color: var(--charcoal); }
.btn-primary:hover { background: var(--amber-dark); color: var(--white); transform: translateY(-2px); }
.btn-outline { border-color: var(--charcoal); color: var(--charcoal); }
.btn-outline:hover { background: var(--charcoal); color: var(--ivory); transform: translateY(-2px); }
.on-dark .btn-outline, .btn-outline-light { border-color: rgba(244,241,234,0.55); color: var(--ivory); }
.on-dark .btn-outline:hover, .btn-outline-light:hover { background: var(--ivory); color: var(--charcoal); border-color: var(--ivory); }
.btn-arrow::after { content: "\2192"; font-family: var(--font-body); transition: transform 0.22s ease; }
.btn-arrow:hover::after { transform: translateX(4px); }

/* ---------- header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}
.site-header.scrolled {
  background: rgba(23, 25, 30, 0.96);
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 30px -12px rgba(0, 0, 0, 0.5);
}
.logo img, .logo svg { height: 46px; width: auto; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.86rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--ivory);
  padding: 0.4rem 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.nav-links a:hover { color: var(--amber); }
.nav-links a.active { color: var(--amber); border-bottom-color: var(--amber); }
.nav-cta { margin-left: 0.6rem; }
.nav-cta .btn { padding: 0.65rem 1.2rem; font-size: 0.8rem; }

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  cursor: pointer;
  width: 44px;
  height: 44px;
  position: relative;
  z-index: 110;
}
.nav-toggle span {
  display: block;
  width: 26px;
  height: 3px;
  background: var(--ivory);
  margin: 5px auto;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ---------- hero ---------- */
.hero {
  position: relative;
  background: var(--charcoal);
  color: var(--ivory);
  padding: calc(84px + clamp(3.5rem, 9vw, 7rem)) 0 clamp(3.5rem, 8vw, 6rem);
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
.hero h1 span { color: var(--amber); }
.hero .lead { margin: 1.6rem 0 2.2rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; }
.hero-art { border: 1px solid var(--line-light); border-radius: var(--radius); overflow: hidden; }

.hero-inner { /* interior page hero */
  background: var(--charcoal);
  color: var(--ivory);
  padding: calc(84px + clamp(2.6rem, 6vw, 4.5rem)) 0 clamp(2.6rem, 5vw, 4rem);
}
.hero-inner p { margin-top: 1.2rem; }
.breadcrumb {
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
  margin-bottom: 1.4rem;
  font-family: var(--font-display);
  font-weight: 600;
}
.breadcrumb a:hover { color: var(--amber); }

/* ---------- trust bar ---------- */
.trust-bar { background: var(--ink); color: var(--ivory); border-top: 1px solid var(--line-light); }
.trust-bar .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  padding: 1.6rem 0;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
}
.trust-item svg { width: 30px; height: 30px; flex: none; }

/* ---------- cards ---------- */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; }

.service-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2.2rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.service-card .icon {
  width: 54px;
  height: 54px;
  border-radius: 8px;
  background: var(--charcoal);
  display: grid;
  place-items: center;
}
.service-card .icon svg { width: 30px; height: 30px; }
.service-card p { font-size: 0.98rem; color: rgba(23,25,30,0.75); flex: 1; }
.text-link {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--amber-dark);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.text-link::after { content: "\2192"; transition: transform 0.2s ease; }
.text-link:hover::after { transform: translateX(4px); }

/* project cards */
.project-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink);
  color: var(--ivory);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.project-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.project-card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; opacity: 0.92; }
.project-card figcaption { padding: 1.3rem 1.4rem 1.5rem; }
.project-card .tag {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 0.5rem;
}
.project-card h3 { font-size: 1.12rem; margin-bottom: 0.3rem; }
.project-card p { font-size: 0.9rem; color: var(--mist); }

/* ---------- split feature ---------- */
.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
.split .art { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
.check-list { list-style: none; margin-top: 1.6rem; display: grid; gap: 0.9rem; }
.check-list li { display: flex; gap: 0.8rem; align-items: flex-start; }
.check-list svg { width: 22px; height: 22px; flex: none; margin-top: 3px; }
.check-list strong { font-family: var(--font-display); }

/* ---------- process ---------- */
.steps { counter-reset: step; display: grid; gap: 0; }
.step {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 1.6rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--line);
}
.on-dark .step { border-bottom-color: var(--line-light); }
.step:last-child { border-bottom: 0; }
.step-num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2.6rem;
  color: transparent;
  -webkit-text-stroke: 1.6px var(--amber);
  line-height: 1;
}
.step h3 { margin-bottom: 0.5rem; }
.step p { color: rgba(23,25,30,0.75); }
.on-dark .step p { color: var(--mist); }

/* mini process strip (home) */
.process-strip { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1.4rem; }
.process-strip .p-item { position: relative; padding-top: 1.4rem; }
.process-strip .p-item::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 3px;
  background: var(--line-light);
}
.process-strip .p-item::after {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 34%;
  height: 3px;
  background: var(--amber);
}
.process-strip .num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  color: var(--amber);
}
.process-strip h3 { font-size: 1.02rem; margin: 0.35rem 0 0.4rem; }
.process-strip p { font-size: 0.88rem; color: var(--mist); }

/* ---------- stats ---------- */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; text-align: left; }
.stat {
  border-left: 3px solid var(--amber);
  padding-left: 1.4rem;
}
.stat .value {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 4vw, 2.9rem);
  line-height: 1.1;
}
.stat .label { font-size: 0.92rem; color: var(--mist); margin-top: 0.3rem; }

/* ---------- testimonials ---------- */
.quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; }
.quote {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}
.quote .stars { color: var(--amber); letter-spacing: 3px; font-size: 1.05rem; }
.quote blockquote { font-size: 0.99rem; color: rgba(23,25,30,0.8); flex: 1; }
.quote cite {
  font-style: normal;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
}
.quote cite span { display: block; font-weight: 400; font-family: var(--font-body); font-size: 0.82rem; color: var(--stone); }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 0.9rem; max-width: 820px; }
.faq details {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1.15rem 1.4rem;
}
.faq summary {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 1.5rem; color: var(--amber-dark); transition: transform 0.2s ease; flex: none; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin-top: 0.9rem; color: rgba(23,25,30,0.75); font-size: 0.97rem; }

/* ---------- CTA band ---------- */
.cta-band { background: var(--charcoal); color: var(--ivory); position: relative; overflow: hidden; }
.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(224,134,44,0.16), transparent 45%),
    repeating-linear-gradient(90deg, transparent 0 39px, rgba(244,241,234,0.05) 39px 40px);
}
.cta-band .container {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding-top: clamp(3rem, 6vw, 4.5rem);
  padding-bottom: clamp(3rem, 6vw, 4.5rem);
}
.cta-band h2 { max-width: 560px; }
.cta-band p { margin-top: 0.8rem; color: var(--mist); }

/* ---------- forms ---------- */
.contact-grid { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: clamp(2rem, 5vw, 4rem); align-items: start; }
.contact-info { display: grid; gap: 1.7rem; }
.contact-item { display: flex; gap: 1rem; align-items: flex-start; }
.contact-item .ci-icon {
  width: 46px; height: 46px; flex: none;
  border-radius: 8px;
  background: var(--charcoal);
  display: grid; place-items: center;
}
.contact-item .ci-icon svg { width: 24px; height: 24px; }
.contact-item h3 { font-size: 1.02rem; margin-bottom: 0.2rem; }
.contact-item p, .contact-item a { font-size: 0.98rem; color: rgba(23,25,30,0.75); }
.contact-item a:hover { color: var(--amber-dark); }

.form-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.6rem, 3vw, 2.6rem);
  box-shadow: var(--shadow);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.field { display: grid; gap: 0.4rem; margin-bottom: 1.1rem; }
.field label {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.field input, .field select, .field textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.8rem 0.95rem;
  border: 1.5px solid var(--line);
  border-radius: 6px;
  background: var(--ivory);
  color: var(--charcoal);
  transition: border-color 0.2s ease;
  width: 100%;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--amber);
}
.field .error-msg { color: #B3261E; font-size: 0.82rem; display: none; }
.field.invalid input, .field.invalid select, .field.invalid textarea { border-color: #B3261E; }
.field.invalid .error-msg { display: block; }
.form-status { margin-top: 1rem; font-size: 0.95rem; display: none; }
.form-status.ok { display: block; color: #1B7A3D; }
.form-status.err { display: block; color: #B3261E; }

/* ---------- footer ---------- */
.site-footer { background: var(--charcoal); color: var(--mist); font-size: 0.95rem; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 2.5rem;
  padding: clamp(3rem, 6vw, 4.5rem) 0 2.5rem;
  border-bottom: 1px solid var(--line-light);
}
.site-footer .logo img { height: 52px; margin-bottom: 1.1rem; }
.site-footer h4 {
  color: var(--ivory);
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 1.1rem;
}
.site-footer ul { list-style: none; display: grid; gap: 0.55rem; }
.site-footer a:hover { color: var(--amber); }
.footer-legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 1.4rem 0;
  font-size: 0.83rem;
}
.footer-cred { line-height: 1.9; }

/* ---------- filters ---------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-bottom: 2.2rem; }
.filter-btn {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.83rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.55rem 1.15rem;
  border: 1.5px solid var(--line);
  border-radius: 999px;
  background: var(--white);
  color: var(--charcoal);
  cursor: pointer;
  transition: all 0.2s ease;
}
.filter-btn:hover { border-color: var(--charcoal); }
.filter-btn.active { background: var(--charcoal); color: var(--ivory); border-color: var(--charcoal); }

/* ---------- values ---------- */
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; }
.value-card {
  border: 1px solid var(--line-light);
  border-radius: var(--radius);
  padding: 2rem;
  background: var(--ink-soft);
}
.value-card h3 { margin: 0.9rem 0 0.5rem; }
.value-card p { font-size: 0.95rem; color: var(--mist); }
.value-card .v-num {
  font-family: var(--font-display);
  font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 1.4px var(--amber);
  font-size: 2rem;
}

/* ---------- notice (placeholder flags) ---------- */
.dev-note {
  background: #FFF6E8;
  border: 1px dashed var(--amber-dark);
  border-radius: 8px;
  padding: 0.9rem 1.2rem;
  font-size: 0.88rem;
  color: #7a5518;
  margin-top: 1.4rem;
}

/* ---------- reveal animations ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .hero-grid, .split, .contact-grid { grid-template-columns: 1fr; }
  .card-grid, .quote-grid, .value-grid { grid-template-columns: repeat(2, 1fr); }
  .process-strip { grid-template-columns: repeat(2, 1fr); row-gap: 2rem; }
  .trust-bar .container { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: repeat(3, 1fr); }
  .split.reverse .art { order: -1; }
}

@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: fixed;
    inset: 0;
    background: rgba(23, 25, 30, 0.98);
    flex-direction: column;
    justify-content: center;
    gap: 1.6rem;
    transform: translateX(100%);
    transition: transform 0.3s ease;
  }
  .nav-links.open { transform: none; }
  .nav-links a { font-size: 1.1rem; }
  .card-grid, .quote-grid, .value-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; gap: 1.2rem; }
  .form-row { grid-template-columns: 1fr; }
  .step { grid-template-columns: 60px 1fr; gap: 1rem; }
  .step-num { font-size: 2rem; }
}