/* ============================================================
   ONYX GRID — Base styles
   ============================================================ */

:root {
  --bg: #FAFAF7;
  --bg-alt: #F2F0E9;
  --primary: #4A6FA5;
  --primary-dark: #3B5A87;
  --secondary: #7C9CBF;
  --text: #1E2328;
  --text-secondary: #5B6470;
  --success: #3B8266;
  --border: #E4E1D8;

  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;

  --container-width: 1120px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 16px;
  color: var(--text);
}

h1 { font-size: clamp(2.4rem, 5vw, 3.6rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.3rem); letter-spacing: -0.01em; }
h3 { font-size: 1.15rem; }

p { margin: 0 0 16px; color: var(--text-secondary); }

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 18px;
}

.section-lede {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 640px;
}

.section {
  padding: 96px 0;
  border-bottom: 1px solid var(--border);
}

.section--alt {
  background: var(--bg-alt);
}

.section-head {
  max-width: 760px;
  margin-bottom: 56px;
}

.section-head--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

/* ============================================================
   Buttons
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 13px 26px;
  border-radius: 4px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: var(--primary-dark); color: #fff; }

.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); }

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 32px;
}

/* ============================================================
   Header / Nav
   ============================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 250, 247, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--text);
}

.brand img { width: 28px; height: 28px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
}

.nav-links a:hover { color: var(--primary); }

.nav-cta { display: flex; align-items: center; gap: 20px; }
.nav-cta .btn { padding: 10px 20px; font-size: 0.88rem; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* ============================================================
   Hero
   ============================================================ */

.hero {
  padding: 88px 0 96px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.hero .eyebrow { margin-bottom: 24px; }

.hero h1 { margin-bottom: 8px; }

.hero h2 {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  color: var(--text-secondary);
  max-width: 780px;
  margin: 0 auto 24px;
}

.hero p {
  max-width: 680px;
  margin: 0 auto;
  font-size: 1.08rem;
}

.hero .btn-group { justify-content: center; }

.hero-caption {
  margin-top: 56px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}

/* ============================================================
   Challenge grid
   ============================================================ */

.challenge-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.challenge-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 28px;
}

.card-icon { font-size: 1.6rem; margin-bottom: 12px; }

.challenge-card h3 { margin-bottom: 8px; }
.challenge-card p { margin-bottom: 0; }

/* ============================================================
   Approach
   ============================================================ */

.approach-flag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--primary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
  margin-top: 16px;
}

/* ============================================================
   Capabilities
   ============================================================ */

.capability-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.capability-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 32px;
}

.capability-card h3 { margin-bottom: 10px; }
.capability-card p { margin-bottom: 0; }

/* ============================================================
   Engagement stages
   ============================================================ */

.stage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stage-card {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 24px;
  background: var(--bg);
}

.stage-number {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--primary);
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}

.stage-card h3 { font-size: 1rem; margin-bottom: 14px; }

.stage-card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.stage-card li { margin-bottom: 8px; }
.stage-card li:last-child { margin-bottom: 0; }

/* ============================================================
   Comparison table
   ============================================================ */

.table-wrap { overflow-x: auto; }

.compare-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
  font-size: 0.95rem;
}

.compare-table th, .compare-table td {
  text-align: left;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.compare-table thead th {
  font-family: var(--font-heading);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-secondary);
  border-bottom: 2px solid var(--border);
}

.compare-table td:first-child, .compare-table th:first-child {
  font-weight: 600;
  color: var(--text);
}

.compare-table td:nth-child(2) { color: var(--text-secondary); }

.compare-table td:nth-child(3) {
  color: var(--success);
  font-weight: 500;
}

/* ============================================================
   Track record
   ============================================================ */

.track-note {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.track-list {
  list-style: none;
  margin: 0 0 48px;
  padding: 0;
  display: grid;
  gap: 18px;
}

.track-list li {
  position: relative;
  padding-left: 32px;
  color: var(--text);
  font-size: 1.02rem;
  line-height: 1.55;
}

.track-list li::before {
  content: "\2713";
  position: absolute;
  left: 0;
  top: 1px;
  color: var(--success);
  font-weight: 700;
}

.stat-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 8px;
  border-top: 1px solid var(--border);
  padding-top: 32px;
}

.stat {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  color: var(--text);
}

.stat strong {
  color: var(--success);
  font-size: 1.2rem;
}

.stat-sep {
  color: var(--border);
  padding: 0 4px;
}

/* ============================================================
   Lab
   ============================================================ */

.lab-panel {
  background: var(--text);
  color: #EDEDE8;
  border-radius: 10px;
  padding: 56px;
}

.lab-panel h2 { color: #fff; }
.lab-panel p { color: #C3C7CC; }
.lab-panel .eyebrow { color: var(--secondary); }

/* ============================================================
   Markets
   ============================================================ */

.market-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.market-card { text-align: left; }
.market-card .card-icon { font-size: 1.7rem; }
.market-card h3 { margin-bottom: 8px; }
.market-card p { margin-bottom: 0; }

/* ============================================================
   Team
   ============================================================ */

.team-card {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  align-items: start;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 40px;
  background: var(--bg-alt);
}

.team-avatar {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 2.6rem;
}

.team-name { font-size: 1.3rem; margin-bottom: 2px; }

.team-role {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 18px;
  display: block;
}

.stack-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.stack-tags span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 5px 10px;
  border-radius: 3px;
}

/* ============================================================
   Contact
   ============================================================ */

.contact-section {
  text-align: center;
  padding: 96px 0;
}

.contact-section .section-lede { margin-left: auto; margin-right: auto; }
.contact-section .btn-group { justify-content: center; }

/* ============================================================
   Footer
   ============================================================ */

.site-footer {
  padding: 48px 0;
  background: var(--bg-alt);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.footer-brand {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text);
}

.footer-brand span {
  display: block;
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--text-secondary);
  font-size: 0.88rem;
  margin-top: 4px;
}

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.9rem;
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 900px) {
  .challenge-grid,
  .capability-grid,
  .market-grid { grid-template-columns: 1fr; }

  .stage-grid { grid-template-columns: repeat(2, 1fr); }

  .team-card { grid-template-columns: 120px 1fr; padding: 28px; gap: 24px; }
  .team-avatar { font-size: 1.6rem; }

  .lab-panel { padding: 36px 28px; }
}

@media (max-width: 720px) {
  .nav-links, .nav-cta .btn-secondary { display: none; }
  .nav-toggle { display: block; }

  .nav.is-open .nav-links {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 24px;
  }

  .section { padding: 64px 0; }
  .stage-grid { grid-template-columns: 1fr; }
  .team-card { grid-template-columns: 1fr; }
  .team-avatar { width: 100px; }
}