/* ============================================================
   INFINITY 3D CONCRETE CONSULTING — Site stylesheet
   Brand language matched to the Manufacturer Briefing deck.
   ============================================================ */

:root {
  --bg-0: #0A0A0A;          /* page background */
  --bg-1: #121214;          /* card background */
  --bg-2: #1a1a1d;          /* hover / lifted */
  --line: #25252a;          /* hairline borders */
  --line-strong: #3a3a40;   /* stronger borders */

  --ink-0: #ffffff;         /* primary text on dark */
  --ink-1: #e8e8e8;         /* body text */
  --ink-2: #b8b8b8;         /* secondary text */
  --ink-3: #7a7a82;         /* tertiary / labels */

  --accent: #EE4633;        /* primary accent (Infinity red-orange) */
  --accent-hover: #ff5c47;
  --accent-deep: #c8341f;

  --eyebrow-spacing: 0.32em;
  --max-w: 1280px;

  --font-display: 'Impact', 'Oswald', 'Arial Narrow', sans-serif;
  --font-label: 'Arial', 'Helvetica Neue', sans-serif;
  --font-body: 'Calibri', 'Segoe UI', system-ui, sans-serif;
}

/* ── Reset ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg-0);
  color: var(--ink-1);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

/* Top accent bar — matches the deck */
.top-bar {
  height: 6px;
  background: var(--accent);
  width: 100%;
}

/* ── Header / Navigation ─────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 18px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-logo {
  width: 38px;
  height: 38px;
  object-fit: contain;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}
.brand-text .b1 {
  font-family: var(--font-label);
  font-size: 16px;
  letter-spacing: 0.3em;
  color: var(--ink-0);
  font-weight: 600;
  text-transform: uppercase;
}
.brand-text .b2 {
  font-family: var(--font-label);
  font-size: 9px;
  letter-spacing: 0.4em;
  color: var(--ink-2);
  margin-top: 5px;
  text-transform: uppercase;
  font-weight: 400;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.nav-links a {
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-2);
  transition: color 0.2s;
  padding: 8px 0;
  position: relative;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--ink-0);
}
.nav-links a.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--accent);
}
/* ── Nav CTA — minimal orange-bordered button ──────────────── */
.nav-cta {
  display: inline-block;
  background: transparent;
  color: var(--ink-0) !important;

  padding: 12px 34px 12px 36px;
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  font-weight: 700;
  border: 1.5px solid var(--accent);
  border-radius: 0;
  transition: background 0.25s ease, color 0.25s ease;
}
.nav-cta:hover {
  background: var(--accent);
  color: #fff !important;
}
.nav-cta:hover {
  background: var(--accent-hover);
  box-shadow: 0 6px 20px -6px rgba(238, 70, 51, 0.7);
}
.nav-cta:hover::after {
  transform: translateX(4px);
  background: #0A0A0A;
  color: #ffffff;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--ink-1);
  padding: 8px 12px;
  font-family: var(--font-label);
  letter-spacing: 0.2em;
  font-size: 11px;
}

/* ── Layout primitives ───────────────────────────────────── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 28px;
}
.section {
  padding: 100px 0;
  border-top: 1px solid var(--line);
}
.section.no-border { border-top: none; }
.section.tight { padding: 72px 0; }

.eyebrow {
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: var(--eyebrow-spacing);
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
}
.eyebrow.muted { color: var(--ink-3); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--ink-0);
  font-weight: 400;
  letter-spacing: 0.01em;
  line-height: 1.05;
  text-transform: uppercase;
}
h1 { font-size: clamp(2.6rem, 6vw, 5rem); }
h2 { font-size: clamp(2rem, 4.5vw, 3.4rem); }
h3 { font-size: clamp(1.3rem, 2.4vw, 1.8rem); letter-spacing: 0.04em; }
h4 { font-size: 1rem; letter-spacing: 0.18em; }

.accent { color: var(--accent); }
.dim { color: var(--ink-2); }

p { color: var(--ink-2); max-width: 64ch; }
p.lead { color: var(--ink-1); font-size: 1.1rem; max-width: 56ch; }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 16px 28px;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 700;
  border: 1px solid transparent;
  transition: all 0.2s;
  cursor: pointer;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
}
.btn-ghost {
  background: transparent;
  color: var(--ink-0);
  border-color: var(--line-strong);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.btn-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 28px;
}

/* ── Hero ────────────────────────────────────────────────── */
.hero {
  padding: 110px 0 90px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 80% 30%, rgba(238, 70, 51, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 10% 80%, rgba(238, 70, 51, 0.04) 0%, transparent 60%);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 1; }
.hero .eyebrow { margin-bottom: 22px; display: inline-block; }
.hero h1 { margin-bottom: 28px; max-width: 18ch; }
.hero .lead { margin-bottom: 8px; }

.hero-meta {
  display: flex;
  gap: 36px;
  margin-top: 56px;
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* ── Two-path block (Equal billing) ──────────────────────── */
.paths {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 60px;
}
.path-card {
  border: 1px solid var(--line);
  background: var(--bg-1);
  padding: 44px;
  position: relative;
  transition: border-color 0.2s, transform 0.2s;
  display: flex;
  flex-direction: column;
}
.path-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}
.path-card .num {
  font-family: var(--font-display);
  color: var(--accent);
  font-size: 2.4rem;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}
.path-card h3 { color: var(--ink-0); margin-bottom: 16px; }
.path-card p { flex: 1; margin-bottom: 28px; }
.path-card .arrow {
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
}
.path-card:hover .arrow { letter-spacing: 0.3em; }

/* ── Feature grid ────────────────────────────────────────── */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 56px;
}
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 40px;
}
.feature {
  border: 1px solid var(--line);
  background: var(--bg-1);
  padding: 36px 32px;
  transition: border-color 0.2s, background 0.2s;
}
.feature:hover { border-color: var(--accent); background: var(--bg-2); }
.feature .num {
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 18px;
}
.feature h3 { font-size: 1.1rem; letter-spacing: 0.06em; margin-bottom: 14px; }
.feature p { font-size: 0.95rem; }

/* Section header pattern */
.section-head {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
  align-items: end;
  margin-bottom: 32px;
}
.section-head .eyebrow { margin-bottom: 12px; display: block; }
.section-head h2 { max-width: 18ch; }
.section-head .head-aside { color: var(--ink-2); padding-bottom: 6px; }

/* ── Stage flow ──────────────────────────────────────────── */
.stages {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 18px;
  align-items: stretch;
  margin-top: 56px;
}
.stage {
  border: 1px solid var(--line);
  padding: 36px 28px;
  background: var(--bg-1);
}
.stage .label {
  font-family: var(--font-label);
  font-size: 10px;
  letter-spacing: 0.32em;
  color: var(--ink-3);
  margin-bottom: 8px;
  font-weight: 700;
}
.stage h3 {
  color: var(--accent);
  font-size: 1.6rem;
  margin-bottom: 14px;
  letter-spacing: 0.06em;
}
.stage p { font-size: 0.95rem; }
.stage-arrow {
  display: flex;
  align-items: center;
  color: var(--accent);
  font-size: 1.6rem;
  font-family: var(--font-display);
}

/* ── Big quote / pull-quote ──────────────────────────────── */
.pullquote {
  border-left: 3px solid var(--accent);
  padding: 16px 0 16px 32px;
  margin: 48px 0;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  letter-spacing: 0.02em;
  color: var(--ink-0);
  line-height: 1.25;
  text-transform: uppercase;
  max-width: 28ch;
}

/* ── Service list — clean rows ───────────────────────────── */
.svc-list { margin-top: 56px; border-top: 1px solid var(--line); }
.svc-row {
  display: grid;
  grid-template-columns: 80px 1fr 1.5fr 60px;
  gap: 32px;
  padding: 36px 0;
  border-bottom: 1px solid var(--line);
  /* Top-align cells, then tune line-heights so the visible cap-tops of
     Impact (num/h3/arrow) and Calibri (body) sit at the same y.
       Impact 1.2rem cap ≈ 14.2px, line-height 1.4 → 6.3px leading above cap.
       Calibri 1rem cap ≈ 11.2px, line-height 1.5 → 6.4px leading above cap.
     Difference is sub-pixel — visible tops align cleanly. */
  align-items: start;
  transition: padding 0.2s;
}
.svc-row:hover { padding-left: 12px; }
.svc-row .num {
  font-family: var(--font-display);
  color: var(--accent);
  font-size: 1.2rem;
  letter-spacing: 0.06em;
  line-height: 1.4;
}
.svc-row h3 {
  font-size: 1.2rem;
  letter-spacing: 0.06em;
  line-height: 1.4;
  margin: 0;
}
.svc-row p {
  color: var(--ink-2);
  line-height: 1.5;
  margin: 0;
}
.svc-row .arrow {
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 1.2rem;
  text-align: right;
  line-height: 1.4;
}

/* ── Faq accordion ──────────────────────────────────────── */
.faq-item {
  border: 1px solid var(--line);
  margin-bottom: 12px;
  background: var(--bg-1);
}
.faq-item.open { border-color: var(--accent); }
.faq-q {
  width: 100%;
  background: transparent;
  border: none;
  color: var(--ink-0);
  text-align: left;
  padding: 22px 24px;
  font-family: var(--font-label);
  letter-spacing: 0.06em;
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}
.faq-q .icon { color: var(--accent); transition: transform 0.25s; font-size: 1.2rem; }
.faq-item.open .faq-q .icon { transform: rotate(45deg); }
.faq-a { display: none; padding: 0 24px 24px; color: var(--ink-2); }
.faq-item.open .faq-a { display: block; }

/* ── CTA panel ───────────────────────────────────────────── */
.cta-panel {
  background: linear-gradient(135deg, #1a0d0a 0%, #0A0A0A 60%);
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  padding: 80px 56px;
  margin-top: 24px;
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 40px;
  align-items: center;
}
.cta-panel h2 { max-width: 14ch; }
.cta-panel .right { display: flex; flex-direction: column; gap: 16px; }
.cta-panel p { color: var(--ink-2); }

/* ── Form ────────────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  margin-top: 60px;
}
.contact-info-block { display: flex; flex-direction: column; gap: 36px; }
.info-row .label {
  font-family: var(--font-label);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--ink-3);
  font-weight: 700;
  margin-bottom: 8px;
  text-transform: uppercase;
}
.info-row .value {
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: 0.04em;
  color: var(--ink-0);
}
.info-row .value a:hover { color: var(--accent); }

.form { display: flex; flex-direction: column; gap: 20px; }
.form label {
  font-family: var(--font-label);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--ink-3);
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 6px;
  display: block;
}
.form input, .form select, .form textarea {
  width: 100%;
  background: var(--bg-1);
  border: 1px solid var(--line);
  color: var(--ink-0);
  padding: 14px 16px;
  font-family: var(--font-body);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}
.form input:focus, .form select:focus, .form textarea:focus { border-color: var(--accent); }
.form textarea { min-height: 140px; resize: vertical; }

/* ── Footer ──────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 60px 0 30px;
  background: #050505;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}
.footer-grid h4 {
  font-family: var(--font-label);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--ink-3);
  font-weight: 700;
  margin-bottom: 18px;
  text-transform: uppercase;
}
.footer-grid ul { list-style: none; }
.footer-grid li { margin-bottom: 8px; }
.footer-grid a {
  color: var(--ink-2);
  font-size: 0.95rem;
  transition: color 0.2s;
}
.footer-grid a:hover { color: var(--accent); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 28px;
  border-top: 1px solid var(--line);
  font-family: var(--font-label);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--ink-3);
  text-transform: uppercase;
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-toggle { display: inline-block; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--bg-0);
    border-bottom: 1px solid var(--line);
    padding: 24px 28px;
    gap: 16px;
    align-items: flex-start;
  }
  .nav-links.open .nav-cta { width: 100%; text-align: center; }

  .paths, .grid-3, .grid-2, .contact-grid { grid-template-columns: 1fr; }
  .stages { grid-template-columns: 1fr; }
  .stage-arrow { transform: rotate(90deg); justify-self: center; padding: 4px 0; }
  .section-head { grid-template-columns: 1fr; gap: 16px; }
  .cta-panel { grid-template-columns: 1fr; padding: 50px 28px; }
  .svc-row { grid-template-columns: 50px 1fr; }
  .svc-row p, .svc-row .arrow { grid-column: 2; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .section { padding: 70px 0; }
  .hero { padding: 70px 0 60px; }
}
@media (max-width: 540px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero-meta { flex-direction: column; gap: 12px; }
  .footer-bottom { flex-direction: column; gap: 12px; align-items: flex-start; }
}