/* ============ Xylometrics — Design tokens ============ */
@font-face {
  font-family: 'IBM Plex Sans';
  src: url('assets/fonts/IBMPlexSans-Regular.woff2') format('woff2');
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Sans';
  src: url('assets/fonts/IBMPlexSans-Medium.woff2') format('woff2');
  font-weight: 500; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Sans';
  src: url('assets/fonts/IBMPlexSans-Bold.woff2') format('woff2');
  font-weight: 700; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Mono';
  src: url('assets/fonts/IBMPlexMono-Regular.woff2') format('woff2');
  font-weight: 400; font-style: normal; font-display: swap;
}

:root {
  --primary: #1B3A2F;
  --primary-dark: #12271F;
  --secondary: #3D5A6C;
  --accent: #C97D3C;
  --neutral-dark: #2B2B2B;
  --neutral-light: #F7F5F0;
  --white: #FFFFFF;
  --border: #E4E1D8;
  --gray-text: #6B6B62;

  --font-sans: 'IBM Plex Sans', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;

  --wrap: 1120px;
  --radius: 3px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--neutral-dark);
  background: var(--white);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--font-sans); font-weight: 700; line-height: 1.15; margin: 0 0 0.4em; color: var(--primary); }
p { margin: 0 0 1em; }
a { color: inherit; }
img, svg { display: block; max-width: 100%; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--primary); color: var(--white); padding: 10px 16px; z-index: 100;
}
.skip-link:focus { left: 12px; top: 12px; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ============ Buttons ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 26px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, background-color .15s ease, border-color .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--primary); color: var(--white); }
.btn-primary:hover { background: var(--primary-dark); }
.btn-ghost { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-ghost:hover { background: var(--primary); color: var(--white); }
.btn-small { padding: 9px 18px; font-size: 14px; }
.btn-full { width: 100%; }

/* ============ Header ============ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-row {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 14px; padding-bottom: 14px;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-word { font-weight: 700; font-size: 18px; color: var(--primary); }
.site-nav { display: flex; gap: 28px; margin-left: auto; margin-right: 24px; }
.site-nav a { text-decoration: none; font-size: 15px; font-weight: 500; color: var(--neutral-dark); margin-right: 28px; }
.site-nav a:last-child { margin-right: 0; }
.site-nav a:hover { color: var(--primary); }

/* ============ Hero ============ */
.hero { padding: 76px 0 88px; background: var(--white); }
.hero-grid {
  display: grid; grid-template-columns: 1.05fr 0.85fr;
  gap: 56px; align-items: center;
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--secondary);
  margin-bottom: 14px;
}
.hero h1 {
  font-size: clamp(38px, 5vw, 58px);
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}
.hero-sub { font-size: 18px; color: var(--gray-text); max-width: 46ch; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 14px; margin-bottom: 48px; flex-wrap: wrap; }

.hero-stats { display: flex; gap: 36px; margin: 0; padding-top: 24px; border-top: 1px solid var(--border); }
.hero-stats dt { font-family: var(--font-mono); font-size: 22px; font-weight: 500; color: var(--primary); }
.hero-stats dd { margin: 2px 0 0; font-size: 13px; color: var(--gray-text); }

.hero-visual { display: flex; flex-direction: column; align-items: center; gap: 18px; }
.scan-cloud { width: min(100%, 380px); height: auto; }
.scan-cloud .dot {
  opacity: 0;
  transform-origin: center;
  transform: scale(0.3);
  animation: dotIn 0.5s cubic-bezier(.2,.8,.2,1) forwards;
  animation-delay: calc(var(--i) * 28ms);
}
@keyframes dotIn {
  to { opacity: 1; transform: scale(1); }
}
.scan-caption {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--gray-text);
  text-align: center;
  margin: 0;
}

@media (prefers-reduced-motion: reduce) {
  .scan-cloud .dot { animation: none; opacity: 1; transform: scale(1); }
  html { scroll-behavior: auto; }
}

/* ============ Sections ============ */
.section { padding: 88px 0; }
.section-alt { background: var(--neutral-light); }
.section h2 {
  font-size: clamp(28px, 3.4vw, 38px);
  max-width: 18ch;
}
.section-lede { font-size: 17px; color: var(--gray-text); max-width: 58ch; margin-bottom: 48px; }

/* ============ Service cards ============ */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 26px;
}
.service-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--accent);
  background: rgba(201,125,60,0.1);
  padding: 4px 10px;
  border-radius: 2px;
  margin-bottom: 16px;
}
.service-card h3 { font-size: 20px; margin-bottom: 10px; }
.service-card p:not(.service-data) { color: var(--gray-text); font-size: 15px; }
.service-data {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--secondary);
  margin: 16px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* ============ Case cards ============ */
.case-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.case-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 28px;
}
.case-loc {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}
.case-card h3 { font-size: 21px; margin-bottom: 10px; }
.case-card p:not(.case-loc) { color: var(--gray-text); font-size: 15px; margin-bottom: 0; }

/* ============ Contact ============ */
.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 56px; align-items: start; }
.contact-form { background: var(--neutral-light); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; }
.form-row { margin-bottom: 18px; display: flex; flex-direction: column; gap: 6px; }
.form-row label { font-size: 14px; font-weight: 600; color: var(--neutral-dark); }
.optional { font-weight: 400; color: var(--gray-text); }
.form-row input, .form-row textarea {
  font-family: var(--font-sans);
  font-size: 15px;
  padding: 11px 13px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--neutral-dark);
  resize: vertical;
}
.form-row input:focus, .form-row textarea:focus {
  border-color: var(--primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(27,58,47,0.12);
}
.form-note { font-size: 12.5px; color: var(--gray-text); margin: 14px 0 0; text-align: center; }

/* ============ Footer ============ */
.site-footer { background: var(--primary); color: var(--neutral-light); padding: 40px 0; }
.footer-row { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.footer-brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 15px; }
.brand-mark-mono circle { fill: var(--neutral-light); }
.footer-tagline { font-family: var(--font-mono); font-size: 13px; color: #C9CFC9; margin: 0; }
.footer-copy { font-size: 12.5px; color: #9BAAA0; margin: 0; }

/* ============ Responsive ============ */
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .card-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .site-nav { display: none; }
  .hero { padding: 48px 0 56px; }
  .section { padding: 56px 0; }
}