/* =========================================================
   Acumetry — Stylesheet
   ========================================================= */

/* ---------- Design tokens ---------- */
:root {
  --blue: #5fb3ec;
  --blue-dark-bg: #7cc4f0;
  --blue-soft: #eaf6fd;
  --ink: #0a0a0a;
  --ink-soft: #2a2a2a;
  --muted: #5b5b5b;
  --rule: #e6e6e6;
  --bg: #ffffff;
  --bg-alt: #fafafa;
  --bg-dark: #0a0a0a;

  --font-display: "Roboto Slab", Georgia, "Times New Roman", serif;
  --font-body: "Inter Tight", "Helvetica Neue", Arial, sans-serif;

  --container: 1180px;
  --gutter: 28px;
  --radius: 4px;

  --t-fast: 160ms ease;
  --t-med: 260ms cubic-bezier(.2,.7,.2,1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
button { font: inherit; cursor: pointer; }

html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.1;
  margin: 0 0 0.6em;
  color: var(--ink);
}
h1 { font-size: clamp(2.4rem, 5vw, 4rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.9rem, 3.4vw, 2.6rem); }
h3 { font-size: 1.3rem; }
h4 { font-size: 1.05rem; }
p { margin: 0 0 1em; color: var(--ink-soft); }
.lead {
  font-size: clamp(1.1rem, 1.6vw, 1.3rem);
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 60ch;
}

.eyebrow {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 1rem;
  display: inline-block;
}
.eyebrow::before { content: "[ "; color: var(--blue); }
.eyebrow::after  { content: " ]"; color: var(--blue); }

/* ---------- Layout primitives ---------- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
section { padding: clamp(64px, 9vw, 120px) 0; }
.section-dark {
  background: var(--bg-dark);
  color: #fff;
}
.section-dark h1,
.section-dark h2,
.section-dark h3 { color: #fff; }
.section-dark p { color: #c9c9c9; }
.section-dark .eyebrow { color: var(--blue-dark-bg); }
.section-alt { background: var(--bg-alt); }

.rule {
  height: 1px;
  background: var(--rule);
  border: 0;
  margin: 0;
}

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--rule);
  z-index: 50;
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 88px;
}
.nav-logo img { height: 50px; width: auto; }
.nav-links {
  display: flex;
  gap: 36px;
  list-style: none;
  margin: 0; padding: 0;
}
.nav-links a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
  padding: 4px 0;
  transition: color var(--t-fast);
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%; bottom: 0;
  height: 1.5px;
  background: var(--blue);
  transition: right var(--t-med);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { right: 0; }
.nav-links a.active { color: var(--ink); }
.nav-links a.active::after { right: 0; }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--ink);
  color: #fff !important;
  text-decoration: none;
  border-radius: var(--radius);
  font-size: 0.92rem;
  font-weight: 500;
  transition: background var(--t-fast), transform var(--t-fast);
}
.nav-cta:hover { background: #1f1f1f; transform: translateY(-1px); }
.nav-cta::after { display: none !important; }

.nav-toggle { display: none; background: none; border: 0; color: var(--ink); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: var(--radius);
  font-size: 0.98rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  transition: all var(--t-med);
  cursor: pointer;
}
.btn-primary {
  background: var(--ink);
  color: #fff;
}
.btn-primary:hover { background: #1f1f1f; transform: translateY(-2px); box-shadow: 0 8px 24px -10px rgba(0,0,0,0.4); }
.btn-secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}
.btn-secondary:hover { background: var(--ink); color: #fff; }
.section-dark .btn-secondary { color: #fff; border-color: #fff; }
.section-dark .btn-secondary:hover { background: #fff; color: var(--ink); }

.btn-arrow::after {
  content: "→";
  transition: transform var(--t-med);
}
.btn-arrow:hover::after { transform: translateX(4px); }

/* ---------- Hero (homepage) ---------- */
.hero {
  padding: clamp(72px, 11vw, 140px) 0 clamp(64px, 9vw, 120px);
  position: relative;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 80px;
  align-items: center;
}
.hero h1 {
  font-size: clamp(2.6rem, 5.6vw, 4.4rem);
  margin-bottom: 1.2rem;
}
.hero h1 .bracket { color: var(--blue); font-weight: 400; }
.hero .lead { margin-bottom: 2rem; font-size: clamp(1.15rem, 1.7vw, 1.35rem); }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-card {
  background: var(--bg-alt);
  border: 1px solid var(--rule);
  padding: 36px;
  border-radius: var(--radius);
  position: relative;
}
.hero-card::before, .hero-card::after {
  content: "";
  position: absolute;
  width: 24px; height: 24px;
  border: 2px solid var(--blue);
}
.hero-card::before { top: -2px; left: -2px; border-right: 0; border-bottom: 0; }
.hero-card::after  { bottom: -2px; right: -2px; border-left: 0; border-top: 0; }
.hero-card-label {
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}
.hero-stat {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.15;
  margin-bottom: 8px;
}
.hero-stat-desc { font-size: 0.95rem; color: var(--muted); margin: 0; }
.hero-card-divider { height: 1px; background: var(--rule); margin: 28px 0; }

/* ---------- Trust strip ---------- */
.trust {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 28px 0;
  background: #fff;
}
.trust-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.trust-label {
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}
.trust-items {
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
  color: var(--ink-soft);
  font-size: 0.95rem;
}
.trust-items span { display: inline-flex; align-items: center; gap: 8px; }
.trust-items span::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--blue);
  border-radius: 50%;
}

/* ---------- Service cards ---------- */
.services-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 48px;
}
.service-card {
  padding: 40px;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: #fff;
  transition: border-color var(--t-med), transform var(--t-med), box-shadow var(--t-med);
  position: relative;
}
.service-card:hover {
  border-color: var(--ink);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -20px rgba(0,0,0,0.15);
}
.service-card .service-num {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--blue);
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}
.service-card h3 { font-size: 1.5rem; margin-bottom: 12px; }
.service-card p { color: var(--ink-soft); margin-bottom: 20px; }
.service-card ul {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}
.service-card li {
  padding: 6px 0 6px 22px;
  position: relative;
  color: var(--ink-soft);
  font-size: 0.95rem;
}
.service-card li::before {
  content: "";
  position: absolute;
  left: 0; top: 16px;
  width: 12px; height: 1.5px;
  background: var(--blue);
}
.service-card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 2px;
  transition: gap var(--t-med);
}
.service-card-link:hover { gap: 14px; }

/* ---------- Why us / value props ---------- */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 56px;
  margin-top: 56px;
}
.value-item .value-num {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--blue);
  line-height: 1;
  margin-bottom: 16px;
}
.value-item h3 { margin-bottom: 10px; }
.value-item p { font-size: 0.97rem; }

/* ---------- Process / steps ---------- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 56px;
}
.process-step {
  position: relative;
  padding-top: 28px;
  border-top: 2px solid var(--blue-dark-bg);
}
.process-step .step-label {
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue-dark-bg);
  margin-bottom: 10px;
  font-weight: 600;
}
.process-step h3 { font-size: 1.15rem; margin-bottom: 8px; color: #fff; }
.process-step p { font-size: 0.93rem; }

/* ---------- Engagement models (services page) ---------- */
.engagement {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 56px;
  padding: 56px 0;
  border-top: 1px solid var(--rule);
}
.engagement:last-of-type { border-bottom: 1px solid var(--rule); }
.engagement:first-of-type { margin-top: 56px; }

.engagement-featured {
  position: relative;
  background:
    linear-gradient(180deg, rgba(95,179,236,0.04), transparent 70%);
  padding-left: 32px;
  padding-right: 32px;
  margin: 0 -32px;
  border-radius: var(--radius);
}

.engagement-meta {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.engagement-num {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  line-height: 1;
  color: var(--blue);
}
.engagement-label {
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--ink);
}
.engagement-badge {
  display: inline-block;
  margin-top: 4px;
  padding: 4px 10px;
  background: var(--ink);
  color: #fff;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  border-radius: 2px;
  width: max-content;
}

.engagement-body h3 {
  font-size: 1.5rem;
  margin-bottom: 16px;
  max-width: 32ch;
}
.engagement-body .lead {
  font-size: 1.05rem;
  margin-bottom: 32px;
  max-width: 64ch;
}

.engagement-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  padding: 24px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  margin-bottom: 28px;
}
.feature-label {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue);
  font-weight: 600;
  margin-bottom: 8px;
}
.engagement-features p {
  font-size: 0.94rem;
  margin: 0;
  color: var(--ink-soft);
}

.engagement-examples .example-label {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 14px;
}
.engagement-examples ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.engagement-examples li {
  padding: 8px 0 8px 22px;
  position: relative;
  color: var(--ink-soft);
  font-size: 0.96rem;
}
.engagement-examples li::before {
  content: "";
  position: absolute;
  left: 0; top: 18px;
  width: 12px; height: 1.5px;
  background: var(--blue);
}

/* Retainer tier summary (inside engagement 2) */
.tier-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 4px;
}
.tier-summary > div {
  padding: 20px;
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}
.tier-summary h4 {
  font-size: 1rem;
  margin-bottom: 8px;
  color: var(--ink);
}
.tier-summary p {
  font-size: 0.9rem;
  margin: 0;
  color: var(--ink-soft);
}

/* ---------- About page ---------- */
.about-hero {
  padding: clamp(72px, 10vw, 130px) 0 60px;
}
.about-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: end;
}
.about-quote {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  line-height: 1.35;
  color: var(--ink);
  border-left: 3px solid var(--blue);
  padding-left: 28px;
  margin: 0;
}
.about-quote-attr {
  font-family: var(--font-body);
  font-size: 0.92rem;
  color: var(--muted);
  margin-top: 20px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.story-grid {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 56px;
  margin-top: 48px;
}
.story-grid + .story-grid { margin-top: 64px; }
.story-year {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--blue);
}
.story-content h3 { margin-bottom: 16px; }
.story-content p { max-width: 60ch; }

.story-prose {
  margin-top: 32px;
  max-width: 62ch;
}
.story-prose p {
  font-size: 1.15rem;
  line-height: 1.65;
  color: var(--ink-soft);
  margin-bottom: 1.2em;
}

.story-blocks {
  margin-top: 56px;
  max-width: 68ch;
  position: relative;
}
.story-blocks::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: linear-gradient(180deg, var(--blue), var(--rule) 40%, transparent);
}
.story-block {
  position: relative;
  padding: 32px 0 32px 36px;
  border-top: 1px solid var(--rule);
}
.story-block:first-child { border-top: 0; }
.story-block::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 44px;
  width: 9px;
  height: 9px;
  background: var(--blue);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--bg-alt);
}
.story-block:first-child::before { top: 12px; }
.story-block-marker {
  font-family: var(--font-body);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue);
  font-weight: 600;
  margin-bottom: 14px;
}
.story-block p {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 1.6vw, 1.35rem);
  line-height: 1.5;
  font-weight: 400;
  color: var(--ink);
  margin: 0;
}

.principles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px 56px;
  margin-top: 48px;
}
.principle h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
  display: flex;
  align-items: baseline;
  gap: 14px;
}
.principle h3::before {
  content: counter(p);
  counter-increment: p;
  color: var(--blue);
  font-size: 0.95rem;
  font-family: var(--font-body);
}
.principles-grid { counter-reset: p; }

/* ---------- Contact page ---------- */
.contact-hero {
  padding: clamp(80px, 10vw, 130px) 0 40px;
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  margin-top: 48px;
}
.contact-info h3 { font-size: 1.15rem; margin-bottom: 6px; }
.contact-info p { color: var(--muted); margin-bottom: 28px; font-size: 0.96rem; }
.contact-info a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--blue); }
.contact-info a:hover { color: var(--blue); }

.contact-form {
  background: var(--bg-alt);
  padding: 40px;
  border-radius: var(--radius);
  border: 1px solid var(--rule);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.form-field { margin-bottom: 20px; }
.form-field label {
  display: block;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 8px;
}
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: #fff;
  font: inherit;
  color: var(--ink);
  transition: border-color var(--t-fast);
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: 0;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(95,179,236,0.18);
}
.form-field textarea { min-height: 140px; resize: vertical; }
.form-note { font-size: 0.85rem; color: var(--muted); margin-top: 14px; }

/* ---------- CTA strip ---------- */
.cta-strip {
  text-align: center;
}
.cta-strip h2 { max-width: 22ch; margin-left: auto; margin-right: auto; }
.cta-strip .lead { margin-left: auto; margin-right: auto; margin-bottom: 36px; }
.cta-actions { display: inline-flex; gap: 14px; flex-wrap: wrap; justify-content: center; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-dark);
  color: #c9c9c9;
  padding: 72px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 56px;
  margin-bottom: 56px;
}
.footer-logo img { height: 56px; margin-bottom: 20px; }
.footer-tag { color: #9a9a9a; max-width: 30ch; font-size: 0.93rem; line-height: 1.55; }
.footer-col h4 {
  font-family: var(--font-body);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 18px;
  font-weight: 600;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 10px; }
.footer-col a {
  color: #c9c9c9;
  text-decoration: none;
  font-size: 0.94rem;
  transition: color var(--t-fast);
}
.footer-col a:hover { color: var(--blue-dark-bg); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 28px;
  border-top: 1px solid #1f1f1f;
  font-size: 0.85rem;
  color: #7a7a7a;
  flex-wrap: wrap;
  gap: 16px;
}

/* ---------- Reveal on scroll (simple, CSS-only) ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 700ms ease, transform 700ms cubic-bezier(.2,.7,.2,1);
}
.reveal.in {
  opacity: 1;
  transform: none;
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .nav { height: 80px; }
  .nav-logo img { height: 44px; }
  .footer-logo img { height: 50px; }
  .hero-grid { grid-template-columns: 1fr; gap: 56px; }
  .services-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; gap: 36px; }
  .process-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .engagement { grid-template-columns: 1fr; gap: 24px; padding: 40px 0; }
  .engagement-featured { padding: 32px; margin: 0; }
  .engagement-features { grid-template-columns: 1fr; gap: 18px; }
  .tier-summary { grid-template-columns: 1fr; }
  .service-detail { grid-template-columns: 1fr !important; gap: 32px !important; }
  .about-hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .story-grid { grid-template-columns: 1fr; gap: 12px; }
  .principles-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}
@media (max-width: 640px) {
  .nav { height: 72px; }
  .nav-logo img { height: 38px; }
  .footer-logo img { height: 46px; }
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; padding: 8px; }
  .form-row { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .trust-row { flex-direction: column; align-items: flex-start; gap: 14px; }
}